Pivotable tower for angled drilling

Abstract

An interface apparatus between a tower and platform includes a tower support assembly with opposed angle brackets and a first tower support assembly coupler/decoupler which is repeatably moveable between coupled and decoupled conditions with the tower support assembly. In the coupled condition, the coupler/decoupler is capable of coupling to the tower support assembly at a plurality of predetermined positions along the opposed angle brackets. The interface apparatus includes a second tower support assembly coupler/decoupler which allows the tower to pivot relative to the tower support assembly and rotate relative to the platform.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates generally to towers for drilling machines, and controlling the tilt thereof.

2. Description of the Related Art

There are many different types of drilling machines for drilling through a formation. Some of these drilling machines are mobile and others are stationary. Some examples of mobile and stationary drilling machines are disclosed in U.S. Pat. Nos. 820,992, 3,195,695, 3,245,180, 3,561,616, 3,692,123, 3,695,363, 3,708,024, 3,778,940, 3,805,902, 3,815,690, 3,833,072, 3,905,168, 3,968,845, 3,992,831, 4,016,687, 4,020,909, 4,595,065, 4,606,155, 4,616,454, 5,988,299, 6,527,063, 6,672,410, 6,675,915, 7,325,634, 7,347,285 and 7,413,036, as well as in U.S. Patent Application No. 20080210469. Some drilling machines, such as the one disclosed in U.S. Pat. No. 4,295,758, are designed to float and are useful for ocean drilling. The contents of these cited U.S. patents and the patent application are incorporated by reference as though fully set forth herein.

A typical mobile drilling machine includes a vehicle and tower, wherein the tower carries a rotary head and drill string. In operation, the drill string is driven into the formation by the rotary head. In this way, the drilling machine drills through the formation. More information about drilling machines, and how they operate, can be found in the above-identified references.

In some situations, it is desirable to drill at an angle. Drilling at an angle is useful so that more regions of a formation can be reached with the drill string. For example, in some situations, the drilling machine cannot be positioned directly over a desired region of the formation, so it is not possible to drill straight down and reach this region of the formation. Hence, angled drilling is useful so that the drilling machine can reach a desired region of a formation without being directly over it. In this way, there are many more options available when selecting the location to position the drilling machine.

Angled drilling is typically accomplished by tilting the tower relative to an axis of the drilling machine so that the drill string is tilted in response. More information regarding tilting a tower is provided in U.S. Pat. Nos. 3,245,180, 3,561,616, 3,815,690, 3,778,940, 3,905,168, and 3,992,831, and U.S. Patent Application No. 20080210469, as well as some of the other references mentioned above. However, it is desirable to better control the angle that the tower is tilted, and to provide more stability to the tower when it is in a tilted condition.

BRIEF SUMMARY OF THE INVENTION

The present invention is directed to a drilling machine for angled drilling, as well as a method of manufacturing and using the drilling machine. The novel features of the invention are set forth with particularity in the appended claims. The invention will be best understood from the following description when read in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 a is a side view of a drilling machine with a tower rotatably mounted to a tower interface assembly, wherein the tower and tower interface assembly are carried by a platform, and the tower is in a stowed condition.

FIGS. 1 b and 1c are opposed side views of the drilling machine of FIG. 1a, wherein the tower is in a raised condition.

FIGS. 1 d and 1e are close-up front and rear perspective views, respectively, of the drilling machine of FIG. 1a, wherein the tower is in the raised condition.

FIG. 1 f is a perspective view of opposed tower brackets of the tower of the drilling machine of FIG. 1a.

FIG. 2 a is a rear perspective view of the tower interface assembly being carried by the platform, as shown in FIGS. 1a, 1b and 1c.

FIGS. 2 b and 2c are close-up rear and front perspective views, respectively, of the tower interface assembly being carried by the platform, as shown in FIGS. 1a, 1b and 1c.

FIG. 2 d is a front side view of the tower interface assembly being carried by the platform, as shown in FIGS. 1a, 1b and 1c.

FIG. 2 e is a side view of the tower interface assembly being carried by the platform, as shown in FIGS. 1a, 1b and 1c.

FIG. 2 f is a front perspective view of the tower interface assembly of FIGS. 1a, 1b and 1c.

FIG. 3 a is a close-up rear perspective view of the opposed tower brackets of FIG. 1f rotatably mounted to the tower interface assembly of the drilling machine of FIG. 1a with a pivot pin actuator and angle pin actuator, wherein the tower is in the raised condition.

FIG. 3 b is a close-up rear side view of the pivot pin actuator and angle pin actuator of FIG. 3a.

FIG. 4 a is a sectional front view, taken along a cut-line 4a-4a of FIG. 3a, of the opposed tower brackets and tower interface assembly.

FIG. 4 b is a perspective view of the pivot pin actuator of FIGS. 3a and 3b.

FIG. 4 c is an exploded perspective view of a pivot pin of the pivot pin actuator of FIGS. 3a and 3b, and a pivot pin insert and pivot pin bushing of the tower.

FIGS. 4 d and 4e are perspective and side views, respectively, of the pivot pin of the pivot pin actuator of FIGS. 3a and 3b, and the pivot pin insert and pivot pin bushing of the tower.

FIGS. 5 a and 5b are views of the pivot pin actuator of FIGS. 3a and 3b in retracted and extended conditions, respectively.

FIG. 6 a is a sectional front view, taken along a cut-line 6a-6a of FIG. 3a, of the opposed tower brackets and tower interface assembly.

FIG. 6 b is a perspective view of the angle pin actuator of FIGS. 3a and 3b.

FIG. 6 c is an exploded perspective view of an angle pin of the angle pin actuator of FIGS. 3a and 3b, and an angle pin insert and angle pin bushing of the tower.

FIGS. 6 d and 6e are perspective and side views, respectively, of the angle pin of the angle pin actuator of FIGS. 3a and 3b, and the angle pin insert and angle pin bushing of the tower.

FIGS. 7 a and 7b are views of the angle pin actuator of FIGS. 3a and 3b in retracted and extended conditions, respectively.

FIGS. 8 a, 8b, 8c and 8d are side views of the opposed angle bracket assemblies of the tower interface assembly.

FIG. 8 e is a perspective view of the tower interface assembly showing planes which extend between opposed angle pin sockets.

FIGS. 9 a and 9b are perspective views of the tower of FIG. 1a held at an angle of 0° by the tower interface assembly.

FIGS. 9 c and 9d are perspective views of the tower of FIG. 1a held at an angle of 15° by the tower interface assembly.

FIGS. 9 e, 9f and 9g are perspective views of the tower of FIG. 1a held at an angle of 30° by the tower interface assembly.

FIGS. 10 a, 10b and 10c are side views of different embodiments of angle bracket arms, which can be included with the tower interface assembly.

FIGS. 11 a, 11b and 11c are side, side and perspective views of another embodiment of opposed angle bracket assemblies, which each include the angle bracket arm of FIG. 10c.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 a is a side view of a drilling machine 100 with a tower 102 rotatably mounted to a tower interface assembly 118, wherein tower 102 and tower interface assembly 118 are carried by a platform 103, and tower 102 is in a stowed condition. FIGS. 1b and 1c are opposed side views of drilling machine 100, wherein tower 102 is in a raised condition. FIGS. 1d and 1e are close-up front and rear perspective views, respectively, of drilling machine 100, wherein tower 102 is in the raised condition.

It should be noted that drilling machine 100 can be a stationary or mobile vehicle, but here it is embodied as being a mobile vehicle for illustrative purposes. Some examples of different types of drilling machines are the PV-235, PV-270, PV-271, PV-275 and PV-351 drilling machines, which are manufactured by Atlas Copco Drilling Solutions of Garland, Tex. It should be noted, however, that drilling machines are provided by many other manufacturers.

In this embodiment, drilling machine 100 includes an operator's cab 105, which is carried by platform 103. Operator's cab 105 is positioned proximate to a vehicle front 101a of drilling machine 100. A front 101c of platform 103 is positioned proximate to operator's cab 105, so that operator's cab 105 is positioned between front 101c of platform 103 and vehicle front 101a of drilling machine 100. In this way, operator's cab 105 is positioned proximate to a vehicle front 101a of drilling machine 100.

In this embodiment, drilling machine 100 includes a power pack 104 which is carried by platform 103. Power pack 104 typically includes many different components, such as a prime mover. Platform 103 extends to a vehicle back 101b, and power pack 104 is positioned between platform front 101c and vehicle back 101b. In this way, power pack 104 is positioned proximate to a vehicle back 101b of drilling machine 100.

It should be noted that the components of drilling machine 100 are typically operated by an operator in operator's cab 105. For example, in this embodiment, drilling machine 100 includes a control system (not shown), which is operatively coupled to power pack 104. The control system includes one or more control inputs which can be adjusted by the operator in operator's cab 105. In this way, power pack 104 is operated by an operator in operator's cab 105. Further, the control system includes one or more input controls for controlling the operation of tower 102, as will be discussed in more detail below.

Tower 102 generally carries a feed cable system (not shown) attached to a rotary head 107, wherein the feed cable system allows rotary head 107 to move between raised and lowered positions along tower 102. The feed cable system moves rotary head 107 between the raised and lowered positions by moving it towards a tower crown 102b and tower base 102a, respectively.

Rotary head 107 is moved between the raised and lowered positions to raise and lower, respectively, a drill string 108 through a borehole. Further, rotary head 107 is used to rotate drill string 108, wherein drill string 108 extends through tower 102. Drill string 108 generally includes one or more drill pipes connected together in a well-known manner. The drill pipes of drill string 108 are capable of being attached to an earth bit, such as a tri-cone rotary earth bit. It should be noted that the operation of the rotary head and feed cable system is typically controlled by the operator in operator's cab 105.

In this embodiment, tower interface assembly 118 rotatably mounts tower 102 to platform 103. In particular, tower base 102a is rotatably mounted to tower interface assembly 118. In this way, tower 102 is rotatably mounted to platform 103 through tower interface assembly 118. Tower interface assembly 118 is positioned proximate to platform front 101c. In particular, tower interface assembly 118 is positioned between platform front 101c and power pack 104.

In this embodiment, tower interface assembly 118 operatively couples platform 103 and tower 102 together. Tower 102 and platform 103 are operatively coupled together so that tower 102 can rotate relative to platform 103. In this way, tower interface assembly 118 provides an interface between tower 102 and platform 103.

Tower interface assembly 118 allows tower 102 to be repeatably moved between raised and lowered positions. In the lowered position, which is shown in FIG. 1a, tower crown 102b is towards platform 103, and a back 106a of tower 102 is towards platform 103 and prime mover 104. In the lowered position, tower 102 extends parallel to a reference line 111, which extends parallel to platform 103. It should also be noted that tower 102 is in a stowed condition when it is in the lowered position of FIG. 1a. Further, tower 102 is in a deployed condition when it is not in the lowered position of FIG. 1a.

In the raised position, which is shown in FIGS. 1b and 1c, a tower crown 102b of tower 102 is away from platform 103. In the raised position, a front 106b of tower 102 faces operator's cab 105 and back 106a of tower 102 faces prime mover 104. In the raised position, tower 102 extends parallel to a reference line 110, which extends perpendicular to platform 103 and reference line 111.

Tower interface assembly 118 allows tower 102 to be held at a desired predetermined angle relative to platform 103. Tower interface assembly 118 allows tower 102 to be held at the desired predetermined angle relative to platform 103 so that drilling machine 100 can be used for angled drilling. As will be discussed in more detail below, tower interface assembly 118 allows better control of the angle that tower 102 is tilted, and provides more stability to tower 102 when tower 102 is in a tilted condition.

It should be noted that tower 102 is in the tilted condition when it is positioned between the raised and lowered positions of FIGS. 1a and 1b, respectively, as indicated by a reference line 112. Reference line 112 extends at a non-zero angle θ relative to reference line 110. Reference line 112 extends parallel to tower 102 when tower 102 is rotatably mounted to tower interface assembly 118. Hence, reference line 112 is parallel to reference line 110 when tower 102 is in the raised position.

In this embodiment, drilling machine 100 includes tower actuators 117a and 117b, as shown in FIGS. 1b and 1c. Tower actuators 117a and 117b are operatively coupled between platform 103 and tower brackets 116a and 116b, respectively, of tower 102. Tower brackets 116a and 116b are shown in a perspective view in FIG. 1f, and can also be seen in FIGS. 1a, 1b, 1c, 1d and 1e.

In this embodiment, tower bracket 116a includes tower bracket lower opening 190a, tower bracket intermediate opening 191a and tower bracket upper opening 192a. Tower actuator 117a extends between platform 103 and tower bracket upper opening 192a. It should be noted that tower bracket intermediate opening 191a is positioned between tower bracket lower opening 190a and tower bracket upper opening 192a.

In this embodiment, tower bracket 116b includes tower bracket lower opening 190b, tower bracket intermediate opening 191b and tower bracket upper opening 192b. Tower actuator 117b extends between platform 103 and tower bracket upper opening 192b. It should be noted that tower bracket intermediate opening 191b is positioned between tower bracket lower opening 190b and tower bracket upper opening 192b.

Tower actuators 117a and 117b can be of many different types of actuators, such as hydraulic cylinders capable of being repeatably moved between extended and retracted positions. When tower actuators 117a and 117b are in the retracted position, tower 102 is in the lowered position, as shown in FIG. 1a. Further, when actuators 117a and 117b are in extended positions, tower 102 is in the raised position, as shown in FIGS. 1b and 1c. In this way, tower 102 is repeatably moveable between lowered and raised positions. It should be noted that the operation of tower actuators 117a and 117b is controlled by the operator in operator's cab 105. In this way, the movement of tower 102 between the raised and lowered conditions is controlled by the operator in operator's cab 105.

FIG. 2 a is a rear perspective view of tower interface assembly 118 being carried by platform 103. FIGS. 2b and 2c are close-up rear and front perspective views, respectively, of tower interface assembly 118 being carried by platform 103. FIG. 2d is a front side view of tower interface assembly 118 being carried by platform 103. FIG. 2e is a side view of the tower interface assembly 118 being carried by the platform 103, and FIG. 2f is a front perspective view of tower interface assembly 118.

In this embodiment, platform 103 includes longitudinal platform beams 180a and 180b. Longitudinal platform beams 180a and 180b are longitudinal beams because they extend longitudinally between platform front 103a and vehicle back 101b. Longitudinal platform beams 180a and 180b provide support for the components of drilling machine 100, such as power pack 104 and a tower support cradle 109. Tower support cradle 109 is positioned proximate to vehicle back 101b, and holds tower 102 when tower 102 is in the stowed condition. Longitudinal platform beams 180a and 180b can be of many different types of beams, such as I beams.

In this embodiment, platform 103 includes forward platform cross beam 181a and intermediate platform cross beam 181b which extend between opposed longitudinal platform beams 180a and 180b. Forward platform cross beam 181a and intermediate platform cross beam 181b are cross beams because they extend transversely to longitudinal platform beams 180a and 180b. Forward platform cross beam 181a is a forward cross beam because it is positioned proximate to front 101c of platform 103. Intermediate platform cross beam 181b is an intermediate cross beam because it is positioned between forward platform cross beam 181a and vehicle back 101b. Further, intermediate platform cross beam 181b is an intermediate cross beam because forward platform cross beam 181a is positioned between front 101c of platform 103 and intermediate platform cross beam 181b.

As mentioned above, tower interface assembly 118 is positioned proximate to platform front 101c, and between platform front 101c and power pack 104. In this embodiment, tower interface assembly 118 is positioned proximate to forward platform cross beam 181a and intermediate platform cross beam 181b. In particular, tower interface assembly 118 is carried by forward platform cross beam 181a and intermediate platform cross beam 181b, as shown in FIGS. 2a, 2b, 2c, 2d and 2e.

In this embodiment, tower interface assembly 118 includes a tower support assembly 119 (FIG. 2f). Tower support assembly 119 is capable of holding tower 102 at the desired predetermined angle relative to platform 103, as will be discussed in more detail below. In this embodiment, tower support assembly 119 includes opposed angle bracket assemblies 120a and 120b. Angle bracket assembly 120a includes an angle bracket 121a coupled to forward platform cross beam 181a, and an angle bracket arm 135a. Angle bracket 121a extends upwardly towards vehicle front 101c and is coupled to angle bracket arm 135a. As will be discussed in more detail below, angle bracket arm 135a includes a plurality of angle pin sockets 125a which extend therethrough. The angle pin sockets of angle bracket arm 135a are positioned and spaced apart from each other so that tower 102 is held at the desired predetermined angle relative to platform 103.

In this embodiment, angle bracket assembly 120a includes an angle bracket support leg 122a which includes an angle bracket support leg base 124a. Angle bracket support leg base 124a includes a pivot pin socket 133a, which allows tower 102 to rotate relative to platform 102, as will be discussed in more detail below. Angle bracket support leg 122a is coupled to angle bracket arm 135a, and angle bracket support leg base 124a is coupled to forward platform cross beam 181a. Angle bracket 121a and angle bracket support leg 122a hold angle bracket arm 135a above longitudinal platform beam 180a.

In this embodiment, angle bracket assembly 120b includes an angle bracket 121b coupled to forward platform cross beam 181b, and an angle bracket arm 135b. Angle bracket 121b extends upwardly towards vehicle front 101c and is coupled to an angle bracket arm 135b. As will be discussed in more detail below, angle bracket arm 135b includes a plurality of angle pin sockets 125b which extend therethrough. The angle pin sockets of angle bracket arm 135b are positioned and spaced apart from each other so that tower 102 is held at the desired predetermined angle relative to platform 103.

In this embodiment, angle bracket assembly 120b includes an angle bracket support leg 122b which includes an angle bracket support leg base 124b. Angle bracket support leg base 124b includes a pivot pin socket 133b, which allows tower 102 to rotate relative to platform 102, as will be discussed in more detail below. Angle bracket support leg 122b is coupled to angle bracket arm 135b, and angle bracket support leg base 124b is coupled to forward platform cross beam 181b. Angle bracket 121b and angle bracket support leg 122b hold angle bracket arm 135b above longitudinal platform beam 180b.

In this embodiment, angle brackets 121a and 121b are positioned so they oppose each other. In this way, tower support assembly 119 includes opposed angle brackets. Further, angle bracket support legs 122a and 122b are positioned so they oppose each other. In this way, tower support assembly 119 includes opposed angle bracket support legs. Angle bracket support leg bases 124a and 124b are positioned so they oppose each other. In this way, tower support assembly 119 includes opposed angle bracket support leg bases. In this embodiment, angle bracket arm 135a and angle bracket arm 135b oppose each other. In this way, tower support assembly 119 includes opposed angle bracket arms. In this embodiment, angle pin sockets 125a and angle pin sockets 125b are positioned so they oppose each other. In this way, tower support assembly 119 includes opposed angle pin sockets.

It should be noted that, in some embodiments, angle bracket assembly 120a is a single integral piece, and angle bracket assembly 120b is a single integral piece. However, opposed angle bracket assemblies 120a and 120b are shown here as each including multiple pieces coupled together for illustrative purposes.

In some embodiments, tower interface assembly 118 includes components which provide support to tower support assembly 119. The components which provide support to tower support assembly 119 provide more stability to tower 102 when tower 102 is in a tilted condition.

In this embodiment, tower interface assembly 118 includes an angle bracket support arm 123a which provides support to angle bracket assembly 120a. Angle bracket support arm 123a is coupled at one end to longitudinal platform beam 180a through a support arm bracket 139a (FIG. 2f). Further, angle bracket support arm 123a is coupled at an opposed end to angle bracket arm 135a through a support arm bracket 138a. Angle bracket support arm 123a restricts the ability of angle bracket arm 135a to move towards and away from angle bracket assembly 120b.

In this embodiment, tower interface assembly 118 includes an angle bracket support arm 123b which provides support to angle bracket assembly 120b. Angle bracket support arm 123b is coupled at one end to longitudinal platform beam 180b through a support arm bracket 139b (FIG. 2f). Further, angle bracket support arm 123b is coupled at an opposed end to angle bracket arm 135b through a support arm bracket 138b. Angle bracket support arm 123b restricts the ability of angle bracket arm 135b to move towards and away from angle bracket assembly 120a.

In this embodiment, tower interface assembly 118 includes an angle bracket cross beam 136 which is coupled to angle bracket leg 121a and angle bracket leg 121b. Angle bracket cross beam 136 restricts the ability of angle bracket leg 121a and angle bracket leg 121b to move towards and away from each other.

In this embodiment, tower interface assembly 118 includes a longitudinal angle bracket beam 144a which is coupled to angle bracket leg 121a and angle bracket support leg 122a. Longitudinal angle bracket beam 144a restricts the ability of angle bracket leg 121a and angle bracket support leg 122a to move towards and away from each other.

In this embodiment, tower interface assembly 118 includes a longitudinal angle bracket beam 144b which is coupled to angle bracket leg 121b and angle bracket support leg 122b. Longitudinal angle bracket beam 144b restricts the ability of angle bracket leg 121b and angle bracket support leg 122b to move towards and away from each other.

In this embodiment, tower interface assembly 118 includes an angle bracket cross diagonal beam 137a which is coupled to angle bracket leg 121a and angle bracket support leg base 124b, as shown in FIGS. 2d and 2f. Angle bracket cross diagonal beam 137a restricts the ability of angle bracket assembly 120a and angle bracket assembly 120b to move towards and away from each other.

In this embodiment, tower interface assembly 118 includes an angle bracket cross diagonal beam 137b which is coupled to angle bracket leg 121b and angle bracket support leg base 124a, as shown in FIGS. 2d and 2f. Angle bracket cross diagonal beam 137b restricts the ability of angle bracket assembly 120a and angle bracket assembly 120b to move towards and away from each other.

FIG. 3 a is a close-up rear perspective view of opposed tower brackets 116a and 116b rotatably mounted to tower interface assembly 118 with a pivot pin actuator 150 and angle pin actuator 140, wherein tower 102 is in the raised condition. FIG. 3b is a close-up rear side view of pivot pin actuator 150 and angle pin actuator 140.

Pivot pin actuator 150 is positioned below angle pin actuator 140, and proximate to forward platform cross beam 181a, as shown in FIGS. 3a and 3b. Pivot pin actuator 150 extends between angle bracket assemblies 120a and 120b. In particular, pivot pin actuator 150 is positioned below angle pin actuator 140 so it extends between angle bracket support leg bases 124a and 124b and pivot pin sockets 133a and 133b (FIG. 2f).

In this embodiment, pivot pin actuator 150 is carried by tower brackets 116a and 116b (FIG. 1f). In particular, pivot pin actuator 150 is carried by tower brackets 116a and 116b so it extends between tower bracket lower openings 190a and 190b. As will be discussed in more detail below, pivot pin actuator 150 allows tower 102 to be coupled to tower interface assembly 118 so it can rotate relative to platform 103 and move between the raised and lowered positions.

Pivot pin actuator 150 is repeatably moveable between extended and retracted conditions. In the extended condition, and as discussed in more detail below, pivot pin actuator 150 extends through pivot pin sockets 133a and 133b (FIG. 2f) and tower bracket lower openings 190a and 190b (FIG. 1f). Pivot pin actuator 150 extends through pivot pin sockets 133a and 133b in the extended condition so that tower 102 can rotate relative to tower interface assembly 118. In this embodiment, movement of pivot pin actuator 150 between the extended and retracted conditions is controlled by the operator in operator's cab 105.

In the retracted condition, and as discussed in more detail below, pivot pin actuator 150 does not extend through pivot pin sockets 133a and 133b (FIG. 2f). Pivot pin actuator 150 does not extend through pivot pin sockets 133a and 133b in the retracted condition so that tower 102 can be moved relative to tower interface assembly 118.

In this embodiment, angle pin actuator 140 is positioned above pivot pin actuator 150, and away from forward platform cross beam 181a, as shown in FIGS. 3a and 3b. Angle pin actuator 140 extends between angle bracket assemblies 120a and 120b. In particular, angle pin actuator 140 is positioned above pivot pin actuator 150 so it extends between angle bracket arms 135a and 135b and angle pin sockets 125a and 125b.

In this embodiment, angle pin actuator 140 is carried by tower brackets 116a and 116b (FIG. 1f). In particular, angle pin actuator 140 is carried by tower brackets 116a and 116b so it extends between tower bracket intermediate openings 191a and 191b. As will be discussed in more detail below, angle pin actuator 140 allows tower 102 to be coupled to tower interface assembly 118 so tower 102 can be held at the desired predetermined angle relative to platform 103. Tower interface assembly 118 and angle pin actuator 140 allow tower 102 to be held at the desired predetermined angle relative to platform 103 so that drilling machine 100 can be used for angled drilling.

Angle pin actuator 140 is repeatably moveable between extended and retracted conditions. In the extended condition, and as discussed in more detail below, angle pin actuator 140 extends through a selected one of angle pin sockets 125a (FIG. 2f) and tower bracket intermediate opening 190a (FIG. 1f). Further, in the extended condition, angle pin actuator 140 extends through a selected one of angle pin sockets 125b (FIG. 2f) and tower bracket intermediate opening 191b (FIG. 1f). It should be noted that, in the extended condition, angle pin actuator 140 extends through opposed sockets of angle pin sockets 125a and 125b. Angle pin actuator 140 extends through angle pin sockets 125a and 125b in the extended condition so that tower 102 is held at the desired predetermined angle relative to platform 103.

In the retracted condition, and as discussed in more detail below, angle pin actuator 140 does not extend through angle pin socket 125a (FIG. 2f). Further, in the retracted condition, angle pin actuator 140 does not extend through angle pin socket 125b (FIG. 2f). Angle pin actuator 140 does not extend through angle pin sockets 125a and 125b in the retracted condition so that tower 102 can be rotated and moved relative to tower interface assembly 118. In this embodiment, movement of angle pin actuator 140 between the extended and retracted conditions is controlled by the operator in operator's cab 105.

FIG. 4 a is a sectional front view, taken along a cut-line 4a-4a of FIG. 3a, of opposed tower brackets 116a and 116b and tower interface assembly 118 in a region 113 of FIG. 3b. In this embodiment, mounting blocks 156a and 156b are mounted to opposed tower brackets 116a and 116b, respectively. Mounting block 156a includes a mounting block opening 157a which is aligned with tower bracket lower opening 190a. Further, mounting block 156b includes a mounting block opening 157b which is aligned with tower bracket lower opening 190b. Mounting blocks 156a and 156b are for holding pivot pin actuator 150 to opposed tower brackets 116a and 116b. As will be discussed in more detail below, pivot pin actuator 150 extends through mounting block openings 157a and 157b. In this way, pivot pin actuator 150 extends between opposed tower brackets 116a and 116b.

In this embodiment, a pivot pin insert 172a extends through pivot pin socket 133a of angle bracket support leg base 124a, and a pivot pin insert 172b extends through pivot pin socket 133b of angle bracket support leg base 124b. A pivot pin bushing 171a extends through tower bracket lower opening 190a of tower bracket 116a and mounting block openings 157a of mounting block 156a. Further, a pivot pin bushing 171b extends through tower bracket lower opening 190b of tower bracket 116b and mounting block openings 157b of mounting block 156b. Pivot pin insert 172a, pivot pin insert 172b, pivot pin bushing 171a and pivot pin bushing 171b each include central openings through which pivot pin actuator 150 moves in response to moving between the extended and retracted positions, as will be discussed below.

Mounting block openings 157a and 157b are repeatably moveable between aligned and unaligned positions with pivot pin sockets 133a and 133b, respectively. Mounting block openings 157a and 157b are repeatably moveable between aligned and unaligned positions with pivot pin sockets 133a and 133b, respectively, in response to moving tower 102 between the raised and lowered positions.

Mounting block openings 157a and 157b are aligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118. Mounting block openings 157a and 157b are unaligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is not rotatably mounted to tower interface assembly 118. In particular, mounting block openings 157a and 157b are unaligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is in the stowed condition of FIG. 1a. It should be noted that mounting block openings 157a and 157b are aligned with pivot pin sockets 133a and 133b, respectively, in FIG. 4a.

Tower bracket lower openings 190a and 190b are repeatably moveable between aligned and unaligned positions with pivot pin sockets 133a and 133b, respectively. Tower bracket lower openings 190a and 190b are repeatably moveable between aligned and unaligned positions with pivot pin sockets 133a and 133b, respectively, in response to moving tower 102 between the raised and lowered positions.

Tower bracket lower openings 190a and 190b are aligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118. Tower bracket lower openings 190a and 190b are unaligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is not rotatably mounted to tower interface assembly 118. In particular, tower bracket lower openings 190a and 190b are unaligned with pivot pin sockets 133a and 133b, respectively, when tower 102 is in the stowed condition of FIG. 1a. It should be noted that tower bracket lower openings 190a and 190b are aligned with pivot pin sockets 133a and 133b, respectively, in FIG. 4a.

FIG. 4 b is a perspective view of one embodiment of pivot pin actuator 150. In this embodiment, pivot pin actuator 150 includes a pivot pin cylinder 152, which is repeatably moveable between extended and retracted conditions. The movement of pivot pin cylinder 152 between the extended and retracted conditions is controlled by the operator in operator's cab 105. In this embodiment, pivot pin actuator 150 includes pivot pins 151a and 151b. Pivot pins 151a and 151b move away from and towards each other in response to moving pivot pin cylinder 152 between the extended and retracted conditions, respectively. In this way, pivot pin actuator 150 is repeatably moveable between extended and retracted conditions.

In this embodiment, pivot pins 151a and 151b are tapered pivot pins. More information regarding tapered pivot pins is provided in the above-identified related application. Tapered pivot pins are useful because they increase the likelihood that pivot pin actuator 150 will move from the retracted position to the extended position. For example, tapered pivot pins are useful because they increase the likelihood that pivot pin actuator 150 will move from the retracted position to the extended position in response to misalignment of pivot pin socket 133a and tower bracket lower opening 190a, and misalignment of pivot pin socket 133b and tower bracket lower opening 190b.

FIG. 4 c is an exploded perspective view of pivot pins 151a and 151b, and pivot pin inserts 172a and 172b and pivot pin bushings 171a and 171b. FIGS. 4d and 4e are perspective and side views, respectively, of pivot pins 151a and 151b, and pivot pin inserts 172a and 172b and pivot pin bushings 171a and 171b.

It should be noted that, in the retracted condition, pivot pins 151a and 151b extend through pivot pin bushings 171a and 171b, respectively. Further, in the retracted condition, pivot pins 151a and 151b do not extend through pivot pin inserts 172a and 172b, respectively. In the retracted condition, pivot pins 151a and 151b do not extend through pivot pin inserts 172a and 172b, respectively, so that tower 102 can be moved between the raised and lowered positions.

In the extended condition, pivot pin 151a extends through pivot pin bushing 171a and pivot pin insert 172a, and pivot pin 151b extends through pivot pin bushing 171b and pivot pin insert 172b. In the extended condition, pivot pin 151a extends through pivot pin bushing 171a and pivot pin insert 172a, and pivot pin 151b extends through pivot pin bushing 171b and pivot pin insert 172b so that tower 102 is rotatably mounted to tower interface assembly 118.

FIGS. 5 a and 5b are views of pivot pin actuator 150 in retracted and extended conditions, respectively. It should be noted that the view of FIGS. 5a and 5b correspond with the view of FIG. 4a. In the retracted condition, pivot pin actuator 150 extends between pivot pin mounting blocks 156a and 156b, and extends through pivot pin mounting block openings 157a and 157b. In particular, pivot pins 151a and 151b extend through pivot pin mounting block openings 157a and 157b, respectively.

Further, in the retracted condition, pivot pin actuator 150 extends between tower brackets 116a and 116b, and extends through tower bracket lower openings 190a and 190b. In particular, pivot pins 151a and 151b extend through tower bracket lower openings 190a and 190b, respectively.

In the retracted condition, pivot pin actuator 150 does not extend through angle bracket support leg base 124a and 124b. In particular, pivot pins 151a and 151b do not extend through pivot pin sockets 133a and 133b, respectively. In the retracted condition, pivot pin actuator 150 does not extend through pivot pin sockets 133a and 133b so that tower 102 can be moved between the raised and lowered positions. It should be noted that tower 102 is not rotatably mounted to tower interface assembly 118 when pivot pin actuator 150 does not extend through pivot pin sockets 133a and 133b.

In the extended condition, pivot pin actuator 150 extends between pivot pin mounting blocks 156a and 156b, and extends through pivot pin mounting block openings 157a and 157b. In particular, pivot pins 151a and 151b extend through pivot pin mounting block openings 157a and 157b, respectively.

Further, in the extended condition, pivot pin actuator 150 extends between tower brackets 116a and 116b, and extends through tower bracket lower openings 190a and 190b. In particular, pivot pins 151a and 151b extend through tower bracket lower openings 190a and 190b, respectively.

In the extended condition, pivot pin actuator 150 extends through angle bracket support leg base 124a and 124b. In particular, pivot pins 151a and 151b extend through pivot pin sockets 133a and 133b, respectively. In the extended condition, pivot pin actuator 150 extends through pivot pin sockets 133a and 133b so that tower 102 is restricted from moving between the raised and lowered positions. It should be noted that tower 102 is rotatably mounted to tower interface assembly 118 when pivot pin actuator 150 extends through pivot pin sockets 133a and 133b. It should also be noted that tower 102 is moveable to a tilted condition when pivot pin actuator 150 extends through pivot pin sockets 133a and 133b, as will be discussed in more detail below.

As mentioned above, pivot pin actuator 150 is repeatably moveable between the extended and retracted conditions. Pivot pin 151a moves away from angle bracket support leg base 124a and pivot pin socket 133a in response to pivot pin actuator 150 moving to the retracted condition. Further, pivot pin 151b moves away from angle bracket support leg base 124b and pivot pin socket 133b in response to pivot pin actuator 150 moving to the retracted condition. Pivot pin 151a moves towards angle bracket support leg base 124a and pivot pin socket 133a in response to pivot pin actuator 150 moving to the extended condition. Further, pivot pin 151b moves towards angle bracket support leg base 124b and pivot pin socket 133b in response to pivot pin actuator 150 moving to the extended condition. Hence, pivot pins 151a and 151b are repeatably moveable towards and away from angle bracket support leg bases 124a and 124b in response to moving pivot pin actuator 150 between extended and retracted conditions, respectively. Further, pivot pins 151a and 151b are repeatably moveable towards and away from pivot pin sockets 133b and 133b in response to moving pivot pin actuator 150 between extended and retracted conditions, respectively.

FIG. 6 a is a sectional front view, taken along a cut-line 6a-6a of FIG. 3a, of opposed tower brackets 116a and 116b and tower interface assembly 118 in a region 114 of FIG. 3b. In this embodiment, mounting blocks 146a and 146b are mounted to opposed tower brackets 116a and 116b, respectively. Mounting block 146a includes a mounting block opening 147a which is aligned with tower bracket intermediate opening 191a. Further, mounting block 146b includes a mounting block opening 147b which is aligned with tower bracket intermediate opening 191b. Mounting blocks 146a and 146b are for holding angle pin actuator 140 to opposed tower brackets 116a and 116b. As will be discussed in more detail below, angle pin actuator 140 extends through mounting block openings 147a and 147b. In this way, angle pin actuator 140 extends between opposed tower brackets 116a and 116b.

In this embodiment, an angle pin insert 162a extends through an angle pin socket 126a of angle bracket arm 135a, and an angle pin insert 162b extends through angle pin socket 126b of angle bracket arm 135b. An angle pin bushing 161a extends through tower bracket intermediate opening 191a of tower bracket 116a and mounting block openings 147a of mounting block 146a. Further, an angle pin bushing 161b extends through tower bracket intermediate opening 191b of tower bracket 116b and mounting block openings 147b of mounting block 147b. Angle pin insert 162a, angle pin insert 162b, angle pin bushing 161a and angle pin bushing 161b each include central openings through which angle pin actuator 140 moves in response to moving between the extended and retracted positions, as will be discussed below.

Mounting block openings 147a and 147b are repeatably moveable between aligned and unaligned positions with angle pin sockets 126a and 126b, respectively. Mounting block openings 147a and 147b are repeatably moveable between aligned and unaligned positions with angle pin sockets 126a and 126b, respectively, in response to moving tower 102 between the raised and tilted positions. More information regarding moving tower 102 between the raised and tilted positions is provided below.

Mounting block openings 147a and 147b are aligned with angle pin sockets 126a and 126b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118 and in the raised position of FIGS. 1a and 1b. Mounting block openings 147a and 147b are unaligned with angle pin sockets 126a and 126b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118 and not in the upright position of FIGS. 1a and 1b. In particular, mounting block openings 147a and 147b are unaligned with angle pin sockets 126a and 126b, respectively, when tower 102 is in a tilted position. It should be noted that mounting block openings 147a and 147b are aligned with angle pin sockets 126a and 126b, respectively, in FIG. 6a.

Tower bracket intermediate openings 191a and 191b are repeatably moveable between aligned and unaligned positions with angle pin sockets 126a and 126b, respectively. Tower bracket intermediate openings 191a and 191b are repeatably moveable between aligned and unaligned positions with angle pin sockets 126a and 126b, respectively, in response to moving tower 102 between the raised and tilted positions.

Tower bracket intermediate openings 191a and 191b are aligned with angle pin sockets 126a and 126b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118 and tower 102 is in the raised position. Tower bracket intermediate openings 191a and 191b are unaligned with angle pin sockets 126a and 126b, respectively, when tower 102 is rotatably mounted to tower interface assembly 118 and not in the raised position. It should be noted that tower bracket intermediate openings 191a and 191b are aligned with angle pin sockets 126a and 126b, respectively, in FIG. 6a.

FIG. 6 b is a perspective view of one embodiment of angle pin actuator 140. In this embodiment, angle pin actuator 140 includes an angle pin cylinder 142, which is repeatably moveable between extended and retracted conditions. The movement of angle pin cylinder 142 between the extended and retracted conditions is controlled by the operator in operator's cab 105. In this embodiment, angle pin actuator 140 includes angle pins 141a and 141b. Angle pins 141a and 141b move away from and towards each other in response to moving angle pin cylinder 142 between the extended and retracted conditions, respectively. In this way, angle pin actuator 140 is repeatably moveable between extended and retracted conditions.

In this embodiment, angle pins 141a and 141b are tapered angle pins. More information regarding tapered angle pins is provided in the above-identified related application. Tapered angle pins are useful because they increase the likelihood that angle pin actuator 140 will move from the retracted position to the extended position. For example, tapered angle pins are useful because they increase the likelihood that angle pin actuator 140 will move from the retracted position to the extended position in response to misalignment of angle pin sockets 125a and tower bracket intermediate opening 191a, and misalignment of angle pin sockets 125b and tower bracket intermediate opening 191b.

FIG. 6 c is an exploded perspective view of angle pins 141a and 141b, and angle pin inserts 162a and 162b and angle pin bushings 161a and 161b. FIGS. 6d and 6e are perspective and side views, respectively, of angle pins 141a and 141b, and angle pin inserts 162a and 162b and angle pin bushings 161a and 161b.

It should be noted that, in the retracted condition, angle pins 141a and 141b extend through angle pin bushings 161a and 161b, respectively. Further, in the retracted condition, angle pins 161a and 161b do not extend through angle pin inserts 162a and 162b, respectively. In some situations, in the retracted condition, angle pins 161a and 161b do not extend through angle pin inserts 162a and 162b, respectively, so that tower 102 can be moved between the raised and lowered positions. In other situations, in the retracted condition, angle pins 161a and 161b do not extend through angle pin inserts 162a and 162b, respectively, so that tower 102 can be moved between tilted positions.

In the extended condition, angle pin 141a extends through angle pin bushing 161a and angle pin insert 162a, and angle pin 161b extends through angle pin bushing 161b and angle pin insert 162b. In the extended condition, angle pin 141a extends through angle pin bushing 161a and angle pin insert 162a, and angle pin 141b extends through angle pin bushing 161b and angle pin insert 162b so that tower 102 is held in the upright position.

FIGS. 7 a and 7b are views of angle pin actuator 140 in retracted and extended conditions, respectively. It should be noted that the view of FIGS. 7a and 7b correspond with the view of FIG. 6a. In the retracted condition, angle pin actuator 140 extends between angle pin mounting blocks 146a and 146b, and extends through angle pin mounting block openings 147a and 147b. In particular, angle pins 141a and 141b extend through angle pin mounting block openings 147a and 147b, respectively.

Further, in the retracted condition, angle pin actuator 140 extends between tower brackets 116a and 116b, and extends through tower bracket intermediate openings 191a and 191b. In particular, angle pins 141a and 141b extend through tower bracket intermediate openings 191a and 191b, respectively.

In the retracted condition, angle pin actuator 140 does not extend through angle bracket arms 135a and 135b. In particular, angle pins 141a and 141b do not extend through angle pin sockets 126a and 126b, respectively. It should be noted that pivot pins 151a and 151b do not extend through pivot pin sockets 133a and 133b, respectively, in the situations in which it is desirable to move tower 102 between the raised and lowered positions. However, angle pin actuator 140 does extend through angle pin sockets 126a and 126b so that tower 102 can be moved between the raised and lowered positions. Hence, tower 102 is rotatably mounted to tower interface assembly 118 through angle pin actuator 140 when tower 102 is moved to and from the stowed condition. In particular, tower 102 is rotatably mounted to tower interface assembly 118 through angle pins 141a and 141b when tower 102 is moved to and from the stowed condition (FIG. 1a). In this embodiment, angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively, when tower 102 is moved to and from the stowed condition.

In other situations, in the retracted condition, angle pin actuator 140 does not extend through angle pin sockets 126a and 126b so that tower 102 can be moved between tilted positions. It should be noted that pivot pins 151a and 151b extend through pivot pin sockets 133a and 133b, respectively, in the situations in which it is desirable to move tower 102 between tilted positions.

In the extended condition, angle pin actuator 140 extends between angle pin mounting blocks 146a and 146b, and extends through angle pin mounting block openings 147a and 147b. In particular, angle pins 141a and 141b extend through angle pin mounting block openings 147a and 147b, respectively.

Further, in the extended condition, angle pin actuator 140 extends between tower brackets 116a and 116b, and extends through tower bracket intermediate openings 191a and 191b. In particular, angle pins 141a and 141b extend through tower bracket intermediate openings 191a and 191b, respectively.

In the extended condition, angle pin actuator 140 extends through angle bracket arms 135a and 135b. In particular, angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively. In the extended condition, angle pin actuator 140 extends through angle pin sockets 126a and 126b so that tower 102 is held in the upright position.

As mentioned above, angle pin actuator 140 is repeatably moveable between the extended and retracted conditions. Angle pin 141a moves away from angle bracket arm 135a and angle pin socket 126a in response to angle pin actuator 140 moving to the retracted condition. Further, angle pin 141b moves away from angle bracket arm 135b and angle pin socket 126b in response to angle pin actuator 140 moving to the retracted condition. Angle pin 141a moves towards angle bracket arm 135a and angle pin socket 126a in response to angle pin actuator 140 moving to the extended condition. Further, angle pin 141b moves towards angle bracket arm 135b and angle pin socket 126b in response to angle pin actuator 140 moving to the extended condition. Hence, angle pins 141a and 141b are repeatably moveable towards and away from angle bracket arm 135a and 135b in response to moving angle pin actuator 140 between extended and retracted conditions, respectively. Further, angle pins 141a and 141b are repeatably moveable towards and away from angle pin sockets 126b and 126b in response to moving angle pin actuator 140 between extended and retracted conditions, respectively.

FIGS. 8 a and 8b are side views of angle bracket assembly 120a, and FIGS. 8c and 8d are side views of angle bracket assembly 120b. In this embodiment, angle pin sockets 125a include seven angle pin sockets, denoted as angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a. Angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a extend through angle bracket 121a and along the length of angle bracket 121a and away from support arm socket 134a. Further, angle pin sockets 125b include seven angle pin sockets, denoted as angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b. Angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b extend through angle bracket 121b and along the length of angle bracket 121b and away from support arm socket 134b. In general, the number of angle pin sockets extending through angle brackets 121a and 121b is the same.

In this embodiment, angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a are spaced apart from each other so that they are at predetermined positions along angle bracket arm 135a. The predetermined positions of angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a are chosen so that reference planes extend at predetermined angles through pivot pin socket 133a and angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a, wherein, in this embodiment, the predetermined angle is relative to reference line 110. It should be noted that angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a are equidistantly spaced apart from each other in this embodiment. However, the spacing between adjacent angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a can be different, if desired.

In this embodiment, angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b are spaced apart from each other so that they are at predetermined positions along angle bracket arm 135b. The predetermined positions of angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b are chosen so that reference planes extend at predetermined angles through pivot pin socket 133b and angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b, wherein, in this embodiment, the predetermined angle is relative to reference line 110. It should be noted that angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b are equidistantly spaced apart from each other in this embodiment. However, the spacing between adjacent angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b can be different, if desired. Further, it should be noted that angle pin sockets 126b, 127b, 128b, 129b, 130b, 131b, and 132b oppose angle pin sockets 126a, 127a, 128a, 129a, 130a, 131a, and 132a, respectively.

FIG. 8 e is a perspective view of tower interface assembly 118 and the reference planes mentioned above. As shown in FIGS. 1a, 1b and 1c, reference line 110 extends between angle pin socket 126a and pivot pin socket 133a along the length of angle bracket support leg 122a. Further, reference line 110 extends between angle pin socket 126b and pivot pin socket 133b along the length of angle bracket support leg 122b.

As shown in FIG. 8e, a reference plane 200 extends between angle pin sockets 126a and 126b and pivot pin sockets 133a and 133b at angle θ₀ relative to reference line 110, wherein angle θ₀ is about 0° in this example. It should be noted that reference plane 200 extends perpendicular to reference line 111 of FIGS. 1a, 1b and 1c. FIGS. 9a and 9b are perspective views of tower 102 held at an angle of about 0° by tower interface assembly 118. It should be noted that, in FIGS. 9a and 9b, angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively.

A reference plane 201 extends between angle pin sockets 127a and 127b and pivot pin sockets 133a and 133b at an angle θ₅ relative to reference line 110, wherein angle θ₅ is about 5° in this example. A reference plane 202 extends between angle pin sockets 128a and 128b and pivot pin sockets 133a and 133b at an angle θ₁₀ relative to reference line 110, wherein angle θ₁₀ is about 10° in this example.

A reference plane 203 extends between angle pin sockets 129a and 129b and pivot pin sockets 133a and 133b at an angle θ₁₅ relative to reference line 110, wherein angle θ₁₅ is about 15° in this example. FIGS. 9c and 9d are perspective views of tower 102 held at an angle of about 15° by tower interface assembly 118. It should be noted that, in FIGS. 9c and 9d, angle pins 141a and 141b extend through angle pin sockets 129a and 129b, respectively.

A reference plane 204 extends between angle pin sockets 130a and 130b and pivot pin sockets 133a and 133b at an angle θ₂₀ relative to reference line 110, wherein angle θ₂₀ is about 20° in this example. A reference plane 205 extends between angle pin sockets 131a and 131b and pivot pin sockets 133a and 133b at an angle θ₂₅ relative to reference line 110, wherein angle θ₂₅ is about 25° in this example.

A reference plane 206 extends between angle pin sockets 132a and 132b and pivot pin sockets 133a and 133b at an angle θ₃₀ relative to reference line 110, wherein angle θ₃₀ is about 30° in this example. FIGS. 9e, 9f and 9g are perspective views of tower 102 held at an angle of about 30° by tower interface assembly 118. It should be noted that, in FIGS. 9e, 9f and 9g, angle pins 141a and 141b extend through angle pin sockets 132a and 132b, respectively. In this way, the angle pin sockets that extend through angle bracket arms 135a and 135b are spaced apart from each other at positions which correspond to predetermined angles relative to reference line 110.

It should be noted that angle pin socket 132a is rearward of angle pin sockets 126a, 127a, 128a, 129a, 130a and 131a because angle θ₃₀ is greater than angles θ₀, θ₅, θ₁₀, θ₁₅, θ₂₀, and θ₂₅. Further, angle pin socket 131a is rearward of angle pin sockets 126a, 127a, 128a, 129a and 130a because angle θ₂₅ is greater than angles θ₀, θ₅, θ₁₀, θ₁₅ and θ₂₀. Angle pin socket 130a is rearward of angle pin sockets 126a, 127a, 128a and 129ab because angle θ₂₀ is greater than angles θ₀, θ₅, θ₁₀ and θ₁₅. Angle pin socket 129a is rearward of angle pin sockets 126a, 127a and 128a because angle θ₁₅ is greater than angles θ₀, θ₅ and θ₁₀. Angle pin socket 128a is rearward of angle pin sockets 126a and 127a because angle θ₁₀ is greater than angles θ₀ and θ₅. Angle pin socket 127a is rearward of angle pin socket 126a because angle θ₅ is greater than angles θ₀.

It should be noted that angle pin socket 132b is rearward of angle pin sockets 126b, 127b, 128b, 129b, 130b and 131b because angle θ₃₀ is greater than angles θ₀, θ₅, θ₁₀, θ₁₅, θ₂₀, and θ₂₅. Further, angle pin socket 131b is rearward of angle pin sockets 126b, 127b, 128b, 129b and 130b because angle θ₂₅ is greater than angles θ₀, θ₅, θ₁₀, θ₁₅ and θ₂₀. Angle pin socket 130b is rearward of angle pin sockets 126b, 127b, 128b and 129b because angle θ₂₀ is greater than angles θ₀, θ₅, θ₁₀ and θ₁₅. Angle pin socket 129b is rearward of angle pin sockets 126b, 127b and 128b because angle θ₁₅ is greater than angles θ₀, θ₅ and θ₁₀. Angle pin socket 128b is rearward of angle pin sockets 126b and 127b because angle θ₁₀ is greater than angles θ₀ and θ₅. Angle pin socket 127b is rearward of angle pin socket 126b because angle θ₅ is greater than angles θ₀.

As mentioned above, reference line 112 (FIGS. 1a, 1b and 1c and FIGS. 9c and 9d) extends parallel to tower 102. Hence, tower 102 extends angle θ₀ relative to reference line 110 and reference line 112 extends through reference plane 200 when tower 102 is in the raised position and angle pin actuator 140 extends through angle pin sockets 126a and 126b. In particular, tower 102 extends at angle θ₀ relative to reference line 110 and reference line 112 extends through reference plane 200 when tower 102 is in the raised position and angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively.

Tower 102 extends at angle θ₅ relative to reference line 110 and reference line 112 extends through reference plane 201 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 127a and 127b. In particular, tower 102 extends at angle θ₅ relative to reference line 110 and reference line 112 extends through reference plane 201 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 127a and 127b, respectively.

Tower 102 extends at angle θ₁₀ relative to reference line 110 and reference line 112 extends through reference plane 202 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 128a and 128b. In particular, tower 102 extends at angle θ₁₀ relative to reference line 110 and reference line 112 extends through reference plane 202 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 128a and 128b, respectively.

Tower 102 extends at angle θ₁₅ (FIGS. 9c and 9d) relative to reference line 110 and reference line 112 extends through reference plane 203 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 129a and 129b. In particular, tower 102 extends at angle θ₁₅ relative to reference line 110 and reference line 112 extends through reference plane 203 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 129a and 129b, respectively.

Tower 102 extends at angle θ₂₀ relative to reference line 110 and reference line 112 extends through reference plane 204 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 130a and 130b. In particular, tower 102 extends at angle θ₂₀ relative to reference line 110 and reference line 112 extends through reference plane 204 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 130a and 130b, respectively.

Tower 102 extends at angle θ₂₅ relative to reference line 110 and reference line 112 extends through reference plane 205 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 131a and 131b. In particular, tower 102 extends at angle θ₂₅ relative to reference line 110 and reference line 112 extends through reference plane 205 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 131a and 131b, respectively.

Tower 102 extends at angle θ₃₀ (FIGS. 9e, 9f and 9g) relative to reference line 110 and reference line 112 extends through reference plane 206 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 132a and 132b. In particular, tower 102 extends at angle θ₃₀ relative to reference line 110 and reference line 112 extends through reference plane 206 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 132a and 132b, respectively.

Reference line 112 extends at angle θ₉₀ relative to reference line 110 and reference line 112 extends parallel to reference line 111 (FIGS. 1a, 1b and 1c) when tower 102 is in the lowered position. As mentioned above, when tower 102 is in the lowered position, pivot pin actuator 150 is in the retracted condition and does not extend through pivot pin sockets 133a and 133b. In particular, when tower 102 is in the lowered position, pivot pin actuator 150 is in the retracted condition and pivot pins 151a and 151b do not extend through pivot pin sockets 133a and 133b, respectively. However, angle pin actuator 140 does extend through angle pin sockets 126a and 126b so that tower 102 can be moved between the raised and lowered positions. Hence, tower 102 is rotatably mounted to tower interface assembly 118 through angle pin actuator 140 when tower 102 is moved to and from the stowed condition. In particular, tower 102 is rotatably mounted to tower interface assembly 118 through angle pins 141a and 141b when tower 102 is moved to and from the stowed condition (FIG. 1a). In this embodiment, angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively, when tower 102 is moved to and from the stowed condition.

FIGS. 10 a, 10b and 10c are side views of other embodiments of angle bracket arms which can be included with drilling machine 100. In FIG. 10a, an angle bracket arm 135 includes a number N of angle bracket sockets so that a corresponding number of discrete angles are available. As number N increases, the number of discrete angles available increases and, as number N decreases, the number of discrete angles available decreases. In general, the number of discrete angles available range from 0° to 90°. In this way, the angles available for tower 102 to be tilted correspond to N discrete angular values. It should be noted, however, that the angles can be negative angles wherein tower 102 tilts towards cab 105 and vehicle front 101a.

The number N can have many different values. In one embodiment, the number N has values in a range from two to about ten. In another embodiment, the number N has values in a range from two to about fifteen. In one particular example, N is equal to two. It should be noted, however, that the number N can have values outside of these ranges in other embodiments.

In FIG. 10b, angle bracket arm 135a includes a number of angle bracket sockets which corresponds to seven. More information regarding angle bracket arm 135a is provided above with the discussion of tower interface assembly 118. In the embodiment of FIG. 10b, the available angles that tower 102 can be tilted correspond to angle values equal to 0° and 30°, as well as values therebetween that are at 5° increments (i.e. 5°, 10°, 15°, 20°, 25°). In this way, the angles available for tower 102 to be positioned correspond to seven discrete angular values. It should be noted, however, that the angles can have other discrete angular values, and these discrete values can be greater than 30°.

In FIG. 10c, an angle bracket arm 135d includes a number of angle bracket sockets which corresponds to three. In the embodiment of FIG. 10c, the available angles that tower 102 can be tilted correspond to angle values equal to 0° and 30°, as well as values therebetween that are at 15° increments. In this way, the angles available for tower 102 to be positioned correspond to three discrete angular values, as will be discussed in more detail presently.

FIGS. 11 a and 11b are side views of angle bracket assemblies 120d and 120e, respectively, which include angle bracket arms 135d and 135e, respectively. More information regarding angle bracket arm 125d is provided with FIG. 10c above. It should be noted that, in this embodiment, angle bracket arm 135e is the same as angle bracket arm 135d. Hence, for angle brackets 135d and 135e, N is equal to three so that angle bracket arms 135d and 135e each include three angle pin sockets. The angle pin sockets of angle bracket arms 135d and 135e are positioned so they oppose each other.

In this embodiment, the angle pin sockets of angle bracket arm 135d are denoted as angle pin sockets 126a, 129a, and 132a. Further, the angle pin sockets of angle bracket arm 135e are denoted as angle pin sockets 126b, 129b, and 132b.

In this embodiment, angle pin sockets 126a, 129a, and 132a are spaced apart from each other so that they are at predetermined positions along angle bracket arm 135d. The predetermined positions of angle pin sockets 126a, 129a, and 132a are chosen so that reference planes extend at predetermined angles through pivot pin socket 133a and angle pin sockets 126a, 129a, and 132a, wherein, in this embodiment, the predetermined angle is relative to reference line 110. It should be noted that angle pin sockets 126a, 129a, and 132a are equidistantly spaced apart from each other in this embodiment. However, the spacing between adjacent angle pin sockets 126a, 129a, and 132a can be different, if desired.

In this embodiment, angle pin sockets 126b, 129b, and 132b are spaced apart from each other so that they are at predetermined positions along angle bracket arm 135b. The predetermined positions of angle pin sockets 126b, 129b, and 132b are chosen so that reference planes extend at predetermined angles through pivot pin socket 133b and angle pin sockets 126b, 129b, and 132b, wherein, in this embodiment, the predetermined angle is relative to reference line 110. It should be noted that angle pin sockets 126b, 129b, and 132b are equidistantly spaced apart from each other in this embodiment. However, the spacing between adjacent angle pin sockets 126b, 129b, and 132b can be different, if desired. Further, it should be noted that angle pin sockets angle pin sockets 126b, 129b, and 132b oppose angle pin sockets angle pin sockets 126a, 129a, and 132a, respectively.

FIG. 11 c is a perspective view of tower interface assembly 118a, which includes angle bracket assemblies 120d and 120e and the reference planes mentioned above with the discussion of FIGS. 11a and 11b. As shown in FIG. 11c, reference plane 200 extends between angle pin sockets 126a and 126b and pivot pin sockets 133a and 133b at angle θ₀ relative to reference line 110, wherein angle θ₀ is about 0° in this example.

Reference plane 203 extends between angle pin sockets 129a and 129b and pivot pin sockets 133a and 133b at an angle θ₁₅ relative to reference line 110, wherein angle θ₁₅ is about 15° in this example. Further, reference plane 206 extends between angle pin sockets 132a and 132b and pivot pin sockets 133a and 133b at an angle θ₃₀ relative to reference line 110, wherein angle θ₃₀ is about 30° in this example. In this way, the angle pin sockets that extend through angle bracket arms 135d and 135e are spaced apart from each other at positions which correspond to predetermined angles relative to reference line 110.

As mentioned above, reference line 112 (FIGS. 1a, 1b and 1c) extends parallel to tower 102. Hence, tower 102 extends angle θ₀ relative to reference line 110 and reference line 112 extends through reference plane 200 when tower 102 is in the raised position and angle pin actuator 140 extends through angle pin sockets 126a and 126b. In particular, tower 102 extends at angle θ₀ relative to reference line 110 and reference line 112 extends through reference plane 200 when tower 102 is in the raised position and angle pins 141a and 141b extend through angle pin sockets 126a and 126b, respectively.

Tower 102 extends at angle θ₁₅ relative to reference line 110 and reference line 112 extends through reference plane 203 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 129a and 129b. In particular, tower 102 extends at angle θ₁₅ relative to reference line 110 and reference line 112 extends through reference plane 203 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 129a and 129b, respectively.

Tower 102 extends at angle θ₃₀ relative to reference line 110 and reference line 112 extends through reference plane 206 when tower 102 is in the tilted position and angle pin actuator 140 extends through angle pin sockets 132a and 132b. In particular, tower 102 extends at angle θ₃₀ relative to reference line 110 and reference line 112 extends through reference plane 206 when tower 102 is in the tilted position and angle pins 141a and 141b extend through angle pin sockets 132a and 132b, respectively.

The embodiments of the invention described herein are exemplary and numerous modifications, variations and rearrangements can be readily envisioned to achieve substantially equivalent results, all of which are intended to be embraced within the spirit and scope of the invention.

Claims

1. A drilling machine, comprising: a tower; anda tower interface assembly, which carries the tower, wherein the tower interface assembly includes first and second angle bracket arms having a plurality of opposed angle pin sockets; andfirst and second angle bracket support leg bases which support the first and second angle bracket arms, respectively, wherein: the first and second angle bracket support leg bases include opposed pivot pin sockets;the tower includes a pivot pin actuator which is repeatably moveable between engaged and disengaged positions with the pivot pin sockets; andthe pivot pin actuator includes a tapered pivot pin.

2. The machine of claim 1, wherein the tower includes an angle pin actuator which is repeatably between engaged and disengaged positions with corresponding opposed angle pin sockets.

3. The machine of claim 2, wherein the tilt of the tower is adjustable in response to adjusting the corresponding opposed angle pin sockets which are engaged by the angle pin actuator.

4. The machine of claim 2, wherein the angle pin actuator includes a tapered angle pin.

5. The machine of claim 2, wherein the tower is repeatably moveable between stowed and deployed positions in response to moving the pivot pin actuator to the disengaged position with the pivot pin sockets.

6. The machine of claim 5, wherein the tower is repeatably moveable between stowed and deployed positions in response to moving the angle pin actuator to the engaged position with opposed angle pin sockets.

7. A drilling machine, comprising: a tower; anda tower interface assembly, which includes an angle pin actuator having an angle pin cylinder and opposed angle pins; andfirst and second sets of opposed angle pin sockets, wherein a tilt angle of the tower is adjustable in response to disengaging and engaging the first and second sets of opposed angle pin sockets, respectively, with the angle pins, wherein the tower interface assembly includes opposed pivot pin sockets and a pivot pin actuator which is repeatably moveable between engaged and disengaged positions with the opposed pivot pin sockets.

8. The machine of claim 7, wherein the second set of opposed angle pin sockets is positioned rearward of the first set of opposed angle pin sockets.

9. The machine claim 7, wherein the tower is in an upright position in response to the pivot pin actuator engaging the opposed pivot pin sockets and the angle pin actuator engaging the first set of opposed angle pin sockets.

10. The machine of claim 7, wherein the tower is in a first tilted position in response to the pivot pin actuator engaging the opposed pivot pin sockets and the angle pin actuator engaging the second set of opposed angle pin sockets.

11. A drilling machine, comprising: a tower; anda tower interface assembly, which includes an angle pin actuator having a cylinder and opposed angle pins;opposed angle bracket arms, wherein a tilt angle of the tower is adjustable in response to disengaging and engaging the opposed angle bracket arms, respectively, at opposed predetermined positions with the angle pins;opposed pivot pin sockets, wherein the tower interface assembly includes a pivot pin actuator which is repeatably moveable between engaged and disengaged positions with the opposed pivot pin sockets, and opposed tower brackets through which the angle pin actuator and pivot pin actuator extend.

12. The machine of claim 11, further including an angle pin socket positioned at each predetermined position.

13. The machine of claim 12, wherein the angle pin actuator moves along the opposed predetermined positions in response to the tower being tilted.

14. The machine of claim 11, wherein the tower interface assembly includes opposed tower brackets through which the angle pin actuator and pivot pin actuator extend.

15. The machine of claim 11, further including an operator's cab with a control system, wherein the control system controls the operation of the angle pin actuator and pivot pin actuator.

16. The machine of claim 11, wherein a second set of opposed angle pin sockets is positioned further from a vehicle than a first set of opposed angle pin sockets.

17. A machine, comprising: a tower; anda tower interface assembly, which carries the tower, wherein the tower interface assembly includes a pivot pin actuator; andopposed pivot pin sockets, wherein the pivot pin actuator is repeatedly moveable between engaged and disengaged positions with the pivot pin sockets, wherein the pivot pin actuator includes a pivot pin cylinder and opposed pivot pins, and the pivot pins are repeatably moveable between engaged and disengaged positions with the pivot pin sockets in response to actuating the pivot pin cylinder.

18. The machine of claim 17, wherein the pivot pins are repeatably moveable between engaged and disengaged positions with the pivot pin sockets.

19. The machine of claim 17, wherein the tower interface assembly includes first and second angle bracket support leg bases through which the pivot pin sockets extend.

20. The machine of claim 19, wherein the tower interface assembly includes first and second angle bracket arms having a plurality of opposed angle pin sockets.

21. The machine of claim 20, wherein the first and second angle bracket arms are supported by the first and second angle bracket support leg bases.