The present disclosure relates to drill devices, and particularly to a drilling and bolting device for forming a hole or inserting a bolt into a hole in a rock surface.
Conventional drilling and bolting rigs may include an extendable support frame and a drive unit movable along the frame. The drive unit drives a drill bit or bolt into a rock surface. The actuation of the drilling and bolting rig can be achieved using fluid power (e.g., hydraulic power).
In one independent aspect, a drill device includes a base frame, a feed frame supported for movement relative to the base frame, and a feed device for inserting a drill element into a rock surface. The base frame includes a pair of fluid cylinders. The feed frame extends along a feed axis and includes a plurality of guide bars aligned parallel to the feed axis. The feed device is supported for movement relative to the feed frame in a direction parallel to the feed axis. The feed device includes a first guide member and a second guide member. The first guide member engages a surface of at least one of the guide bars, and the second guide member engages another surface of at least one of the guide bars.
In some aspects, the feed device includes a yoke movable relative to the feed frame and a carriage movable relative to the yoke and supporting a rotation unit, wherein the guide bars engage and guide both the yoke and the carriage.
In some aspects, the feed frame includes an upper feed block and a lower feed block between which the plurality of guide bars extend.
In some aspects, the plurality of guide bars includes a first pair of guide bars positioned on one side of the feed frame and a second pair of guide bars positioned on another side of the feed frame.
In some aspects, the yoke includes an upper plate and yoke actuators coupled between the upper plate and the lower feed block.
In some aspects, each of the guide bars has a polygonal cross-section profile.
In some aspects, each of the guide bars has a hexagonal cross-section profile.
In some aspects, the first guide member is an inner guide member, the inner guide member having a convex shape and including an apex positioned in a root that is formed by at least one of the guide bars, and wherein the second guide member is an outer guide member, the outer guide member having a concave shape and including a root receiving an edge of at least one of the guide bars.
In some aspects, the first guide member and the second guide member are positioned on opposite sides of the feed axis relative to one another, the first guide member having a convex shape and including a first apex positioned in a first root that is formed by at least one of the guide bars, the second guide member having a convex shape and including a second apex positioned in a second root that is formed by at least one of the guide bars.
In some aspects, the first guide member and the second guide member are positioned on opposite sides of the feed axis relative to one another, the first guide member having a concave shape and including a first root receiving a first edge of at least one of the guide bars, the second guide member having a concave shape and including a second root receiving a second edge of at least one of the guide bars.
In some aspects, the first guide member includes a pair of inner guide members positioned on opposite sides of the feed axis from one another, each of the inner guide members having a convex shape and including an apex positioned in a root that is formed by at least one of the guide bars. The second guide member includes a pair of outer guide members positioned on opposite sides of the feed axis from one another, each of the outer guide members having a concave shape and including a root receiving an edge of at least one of the associated guide bars. The apices of the inner guide members are positioned in a first plane and the roots of the outer guide members are positioned in a second plane offset from the first plane.
In another independent aspect, a drill device includes a base frame including a pair of fluid cylinders; a feed frame supported for movement relative to the base frame; and a feed device supported on the feed frame, the feed device including a yoke, a spindle supported on the yoke, and a flexible transmission member engaging the spindle, the spindle being releasably coupled to the yoke to permit at least one shim to be positioned between the spindle and the yoke, thereby adjusting a tension of the flexible transmission member.
In some aspects, the feed device further includes a carriage, and wherein a first end of the flexible transmission member is coupled to a block connected to the feed frame, and an opposite end of the flexible transmission member is coupled to the carriage.
In some aspects, the yoke includes a body supporting a drive member, and wherein the spindle includes a non-rotating portion that is coupled to the body of the yoke.
In yet another independent aspect, a drill device includes a base frame including a pair of fluid cylinders; a feed frame supported for movement relative to the base frame; and a feed actuator including a first end coupled to the base frame and a second end coupled to the feed frame, the feed actuator being extendable and retractable to move the feed frame relative to the base frame, the feed actuator having an identical height and width as the fluid cylinders of the base frame, the feed actuator positioned in an opposite orientation relative to the fluid cylinders of the base frame.
In some aspects, at least one of the feed actuator and the fluid cylinders includes a first passage for providing pressurized fluid to one side of a piston, a second passage for providing pressurized fluid to an opposite side of the piston, and a manifold receiving pressurized fluid from a fluid source, the manifold providing fluid to each of the first passage and the second passage.
In some aspects, at least one of the feed actuator and the fluid cylinders includes a first passage for providing pressurized fluid to one side of a piston, a second passage for providing pressurized fluid to an opposite side of the piston, and a manifold providing fluid communication between a first portion of the first passage and a second portion of the first passage.
In some aspects, the base frame includes a lower plate and a connecting plate between which the fluid cylinders extend.
In some aspects, the fluid cylinders each include a rod and a barrel, the rod including a proximal end and a distal end, the proximal end coupled to a piston slidably positioned within the barrel, the distal end secured to the connecting plate, the barrel secured to the lower block.
Other aspects will become apparent by consideration of the detailed description and accompanying drawings.
Before any embodiments are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Use of “including” and “comprising” and variations thereof as used herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Use of “consisting of” and variations thereof as used herein is meant to encompass only the items listed thereafter and equivalents thereof. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings.
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The base frame 22 includes a lower plate or lower block 42 positioned proximate a first end of the drill device 10 and a pair of elongated base members 46 oriented parallel to one another and extending away from the lower block 42. In other embodiments, the base frame 22 may include fewer or more base members. A connecting plate 50 is secured to a distal end of each base member 46. In some embodiments, the distal ends of the base members 46 may be secured to an upper plate or upper block (not shown), which may include an opening through which the bolt passes and/or a clamp or gripping device for aligning and/or gripping the bolt.
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In the illustrated embodiment, the feed frame actuator 82 is identical to the base members 46 but is positioned in an opposite orientation. The feed frame actuator 82 includes a first fluid passage 96 in fluid communication with a portion of the barrel 90 adjacent a cap side of the piston 94, and a second fluid passage 98 in fluid communication with a portion of the barrel 90 adjacent a rod side of the piston 94. In the illustrated embodiment, the first fluid passage 96 of the actuator is in fluid communication with the barrel 90 adjacent the upper feed block 70, and the second fluid passage 98 extends along a length of the barrel 90 and is in fluid communication with an opposite end of the barrel 90. The second fluid passage 98 passes through a manifold 100 including ports 104a, 104b that are fluidly connected to one another in series to permit fluid to pass through the manifold 100. Both the first fluid passage 96 and the second fluid passage 98 of the feed frame actuator 82 receive pressurized fluid through the upper feed block 70. In other embodiments, the first fluid passage 96 and the second fluid passage 98 of the feed frame actuator 82 may receive pressurized fluid through the manifold 100, and the manifold additionally may provide fluid communication between the first fluid passage 96 and the second fluid passage 98.
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Each yoke actuator 118 includes a first fluid passage 136 in fluid communication with a portion of the barrel 132 adjacent a cap side of the piston 124, and a second fluid passage 138 in fluid communication with a portion of the barrel 130 adjacent a rod side of the piston 124. In the illustrated embodiment, the first fluid passage 136 of the yoke actuator 118 is in fluid communication with the barrel 132 adjacent the lower feed block 74 (
Extension and retraction of the yoke actuators 118 moves the yoke 114, the drive member 122, the carriage 126, and the rotation unit in a direction parallel to the feed axis 30 (
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Although various aspects have been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects as described. Various features and advantages are set forth in the following claims.
This application claims the benefit of prior-filed, co-pending U.S. Provisional Patent Application No. 62/680,696, filed Jun. 5, 2018, the entire contents of which are incorporated by reference.
Number | Date | Country | |
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62680696 | Jun 2018 | US |