BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to devices for compacting materials, such as soil, and more particularly, but not by way of limitation, to a vibrating trench compacting apparatus.
2. Brief Description of Related Art
In the prior art there have been various trench compaction devices using vibratory wheels for compacting material into trenches. These trench compacting devices have also even been equipped with isolation mounts and mounted onto vehicles, such as skid steers.
The previous trench compaction devices have come equipped with a frame that mounts to the skid steer loader and another frame having a vibration transmitting means mounted thereon and a wheel connected thereto. The compacting devices also have a vibration dampening system separating the frame mounted to the skid steer loader and the frame having the vibration transmitting means mounted thereon. The previous dampening systems are provided with a plurality of dampening members. The dampening members are mounted between the two frames whereby an excessive amount of shear force is applied to the dampening members causing them to breakdown and wear out rather quickly.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a vibrating compactor apparatus, constructed in accordance with the present invention, shown attached to the front of a skid steer and compacting soil in a trench.
FIG. 2 is a perspective view of a first frame of the vibrating compactor apparatus.
FIG. 3 is a perspective view of a second frame of the vibrating compactor apparatus.
FIG. 4 is perspective view of a compactor wheel of the vibrating compactor apparatus.
FIG. 5 is an exploded, perspective view of a vibration dampening assembly of the vibrating compactor apparatus.
FIG. 6 is a partially exploded, cross-sectional view of the vibration dampening assembly, a portion of the first frame, and a portion of the second frame.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
Referring to the drawings, and more particularly to FIG. 1, a vibrating compactor apparatus 10 constructed in accordance with the present invention is shown compacting dirt in a trench 11. The apparatus 10 is adapted to be mounted to a vehicle 12, such as a skid steer, a skid steer loader, a skid loader, a self-propelled loader, a tractor, or the like. The vehicle 12 is equipped with a mounting plate (not shown), commonly known as a quick attach plate. The mounting plate can be pivotably attached to the vehicle 12.
In general, the apparatus 10 includes a first frame 16, a second frame 20 attached to the first frame 16, a vibration motor 24 connected to the second frame 20, and a compactor wheel 26 rotatably connected to the second frame 20. The vibration motor 24 is mounted to the second frame 20 to vibrate the second frame 20, and thus vibrate the compactor wheel 26. The vibration imparted to the second frame 20 is isolated from the first frame 16, and thus the vehicle 12 in a manner to be described in detail below.
As shown in FIG. 2, the first frame 16 has an adapter plate 18 for mounting the first frame 16 to the mounting plate of the vehicle 12. The adapter plate 18 is provided with a lip 28 creating a cavity for accepting the mounting plate of the vehicle 12 and a plurality of adapter plate holes 30 for allowing the first frame 16 to be securely mounted to the mounting plate. The first frame 16 can be securely mounted to the mounting plate via the adapter plate holes 30 in any suitable manner known in the art, such as with nuts and bolts, bolts and cotter pins, or the like. The first frame 16 further includes a first arm 32 and a second arm 34 extending from the adapter plate 18 in a spaced apart, parallel relationship. The first arm 32 and the second arm 34 are each provided with a plurality of sleeve receiving holes 36a and 36b, respectively, near the distal end of the first arm 32 and the second arm 34.
Referring now to FIG. 3, the second frame 20 includes a motor mounting plate 37, a first leg 38, and a second leg 40. The first and second legs 38 and 40 extend from the motor mounting plate 37 in a generally spaced apart, parallel relationship. As shown, the first leg 38 includes an inner plate 41a and an outer plate 42a creating a slot 43a for receiving the first arm 32 of the first frame 16. The outer plate 42a is shown to be substantially channel shaped. It will be appreciated, however, that the configuration of the outer plate 42a may be varied. For example, the outer plate may be shaped substantially identical to the inner plate and spaced from the inner plate to create a slot. Also, in certain embodiments the outer plate 42a may be omitted.
The inner plate 41a and outer plate 42a have a plurality of connector receiving holes 46a, which are adapted to be aligned with the sleeve receiving holes 36a of the first arm 32 of the first frame 16. The outer plate 42a is provided with a stop member 47a positioned above each connector receiving hole 46a. The first leg 38 further includes an opening 44a in communication with the distal end of the first leg 38 and a plurality of bearing mount holes 48a.
The second leg 40 includes an inner plate 41b and an outer plate 42b creating a slot 43b for receiving the second arm 34 of the first frame 16. The outer plate 42b is shown to be substantially channel shaped. It will be appreciated, however, that the configuration of the outer plate 42b may be varied. For example, the outer plate 42b may be shaped substantially identical to the inner plate 41b and spaced from the inner plate to create a slot. Also, in certain embodiments the outer plate 42b may be omitted.
The inner plate 41b and outer plate 42b have a plurality of connector receiving holes 46b, which are adapted to be aligned with the sleeve receiving holes 36b of the second arm 34 of the first frame 16. Like the outer plate 42a, the outer plate 42b is provided with a stop member (not shown) positioned above each connector receiving hole 46b. The second leg 40 further includes an opening 44b in communication with the distal end of the second leg 40 and a plurality of bearing mount holes 48b.
As shown in FIG. 4, the compactor wheel 26 is a solid, circular member having a width sized to be received in a trench, such as the trench 11. It will be appreciated that the compactor wheel 26 may be constructed in a variety of widths and may also be formed partly solid or spoked. The outer perimeter of the compactor wheel 26 is provided with a plurality of teeth 53 to facilitate compaction. The size, shape, and spacing of the teeth 53 may be varied, or the teeth 53 may be omitted.
To permit rotation, the compactor wheel 26 has an axle defined by axle rods 56a and 56b.
As shown in FIGS. 1, 3, and 4, the compactor wheel 26 is secured to the second frame 20 by inserting the axle rod 56a into a bearing 52a which is housed in a bearing plate 50a. The bearing plate 50a is mounted to the first leg 38 of the second frame 20 via the bearing mount holes 48a, thus allowing for the axle rod 56a to be received by the opening 44a in communication with the distal end of the first leg 38. The bearing plate 50a can be mounted in any suitable manner, such as bolted, screwed, pinned, or the like. The bearing 52a allows the axle rod 56a and thus the compactor wheel 26 to rotate as the apparatus 10 is put into use. It should be appreciated that, while not shown, a second bearing plate and bearing would be used with respect to the axle rod 56b, the opening 44b, the bearing mount holes 48b, and the second leg 40 in a similar manner to how the bearing plate 50a and bearing 52a were described with respect to the axle rod 56a, the opening 44a, the bearing mount holes 48a, and the first leg 38.
Referring now to FIGS. 1, 5, and 6, the first and second arms 32 and 34 of the first frame 16 are connected to the second frame 20 with a plurality of vibration dampening assemblies 60 to substantially isolate the vibration imparted to the second frame 20 by the vibration motor 24 from the first frame 16. The first and second arms 32 and 34 of the first frame 16 are connected to the second frame 20 in an identical manner. Thus, only the manner of connecting the first arm 32 of the first frame 16 to the second frame 20 will be described in detail with reference to FIGS. 1, 5, and 6.
In a preferred embodiment, each of the vibration dampening assemblies 60 includes an outer rigid sleeve 62, an inner rigid sleeve 64, and a vibration dampening member 66 interposed between the outer rigid sleeve 62 and the inner rigid sleeve 64. As shown in FIG. 6, the outer rigid sleeves 62 are disposed through the sleeve receiving holes 36a of the first arm 32 and connected to the first arm 32 at a medial portion of the outer rigid sleeve 62 so that the first arm 32 generally straddles the outer rigid sleeves 62. The outer rigid sleeves 62 may be secured to the first frame 16 in any suitable manner, such as welding. The vibration dampening member 66 and the inner rigid sleeve 64 are positioned in the outer rigid sleeve 62.
The outer rigid sleeve 62, the vibration dampening member 66, and the inner rigid sleeve 64 have a length greater than the width of the first arm 32 of the first frame 16 such that ends of the outer rigid sleeve 62, the vibration dampening member 66, and the inner rigid sleeve 64 extend away from the first arm 32. It should be appreciated by those of ordinary skill in the art, however, that the length of the outer rigid sleeve 62, the vibration dampening member 66, and the inner rigid sleeve 64, as well as the width of the first arm 32 of the first frame 16, may be varied. The vibration dampening member 66 may be fabricated of any durable elastomeric, vibration dampening material.
To connect the first frame 16 to the second frame 20, the first arm 32 together with the outer rigid sleeve 62, the vibration dampening member 66, and the inner rigid sleeve 64 is inserted into the slot 43a of the first leg 38 of the second frame 20. Simultaneously, the second arm 34 together with the outer rigid sleeve 62, the vibration dampening member 66, and the inner rigid sleeve 64 is inserted into the slot 43b of the second leg 40. The second frame 20 is secured to the first frame 16 with a plurality of connector members 68.
As shown in FIGS. 5 and 6, the connector members 68 are pins which include a head 69 and a shaft 70. The head 69 has a generally circular shape with a flat edge 69a for engaging the stop member 47a to prevent rotation of the connector members 68. The shaft 70 is provided with an opening 72 on the distal end of the shaft 70 that is preferably oriented in a substantially parallel relationship to the flat edge 69a. The connector members 68 are inserted through the opening 74 of the inner rigid sleeve 64 and the connector receiving holes 46a of the outer plate 42a and the inner plate 41a until the flat edge 69a of the head 69 engages the bottom of the stop members 47. To reduce wear, the inner plate 41a and the outer plate 42 are provided with support bushings 76 positioned within the connector receiving holes 46a. The connector members 68 are secured to the second frame 20 by inserting a securing bolt 80 through the opening 72 and securing the bolt 80 in place with a nut 82. The parallel relationship of the opening 72 with respect to the flat edge 69a of the head 69 causes the opening 72 to be generally horizontally disposed allowing for more efficient assembly and disassembly. Also, a spacer 78 is provided between the inner plate 41a and the opening 72 to further facilitate assembly and disassembly.
In use, the first frame 16 is secured to the mounting plate (not shown) of the vehicle 12 which is provided with mechanisms for positioning the vibrating compactor apparatus 10 in a trench, such as the trench 11. The vehicle 12 may be moved in a forward or rearward direction with the vibration motor 24 energized to cause the second frame 20, and thus the compacting wheel 26 to vibrate. The vibration imparted to the second frame 20 is transferred to the inner rigid sleeves 64 by the shafts 70 of the connector members 68. The vibration dampening members 66, in turn, absorb and significantly isolate the vibration imparted to the second frame 20 from the first frame 16 and the vehicle 12. With the vibration dampening members 66 being interposed between the outer rigid sleeve 62 and the inner rigid sleeve 64, the vibration dampening members 66 are subjected primarily to compression forces.
Changes may be made in the combination and arrangement of parts or elements as here to fore set forth in the specification and shown in the drawing without departing from the spirit and scope of the invention as defined in the following claims.
Patent Application
20080205986
