Shackle device for reverse circulation drilling machine

Abstract

The utility model discloses a shackle device for a reverse circulation drilling machine, which relates to the technical field of geological machinery and comprises a clamping shackle module and a first driving device. The first driving device can drive the clamping shackle module to slide in the horizontal direction and enable the drill rod to enter the working channel from the inlet, and the clamping shackle module can clamp one section of the drill rod in the working channel and unscrew threads at the joint of the section of the drill rod and the drill rod above the section of the drill rod. The first driving device can further drive the clamping shackle module to slide and enable the drill rod to leave the working channel from the inlet. The shackle device for the reverse circulation drilling machine not only can assist in shackle and reduce labor intensity of workers, but also can avoid influence on operation of the workers in the drilling process.

Description

Technical Field

[0001] The utility model relates to the technical field of geological machinery, in particular to a shackle releasing device for a reverse circulation drilling rig. Background Technique

[0002] During the reverse circulation drilling construction, the torque of the drilling rig is large and the friction between the drill pipe and the formation is large, which will cause the threads at the connection between the drill pipe and the drilling rig body to be over-tightened. As a result, when adding drill pipes, lifting the drill or lowering the drill is required, the first thread between the adjacent two drill pipes is difficult to loosen. Therefore, it is often necessary for workers to strike with a sledgehammer and the power head of the drilling rig to reverse repeatedly to barely unlock, which greatly reduces the construction efficiency, prolongs the auxiliary time, increases the construction cost, and increases the labor intensity of workers. Chinese Patent CN102296936A discloses a clamping and shackle releasing device for a trenchless guiding drilling rig. The shackle releasing device uses a shackle releasing clamp body to clamp the drill pipe and drives the shackle releasing clamp body to rotate and release the shackle through a shackle releasing oil cylinder, reducing the labor intensity of workers. However, when this device is used, since the circumferential direction of the clamping hole is a closed structure, the shackle releasing clamp body must be installed at a designated position before the drill pipe is lowered, and the drill pipe must pass through the drill pipe clamping hole from top to bottom to extend into the drilling for drilling. Since the clamp occupies a part of the space above the drilling hole, this will affect the operations of workers such as installing and adjusting the drill pipe and installing the drill pipe during drilling. Only after the drill pipe is taken out from the clamping hole can the clamp move. Therefore, there is an urgent need for a shackle releasing device for a reverse circulation drilling rig that can not only assist in releasing the shackle, reduce the manual labor intensity, but also avoid affecting the operations of workers during drilling. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a shackle releasing device for a reverse circulation drilling rig to solve the problems existing in the above-mentioned prior art, which can not only assist in releasing the shackle, reduce the manual labor intensity, but also avoid affecting the operations of workers during drilling.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a shackle releasing device for a reverse circulation drilling rig, comprising: a clamping and shackle releasing module and a first driving device. The clamping and shackle releasing module is used for sliding connection on the body of the reverse circulation drilling rig. A working channel extending in the vertical direction is arranged on the clamping and shackle releasing module. The working channel communicates the upper side and the lower side of the clamping and shackle releasing module. An inlet is arranged on one side of the working channel. The inlet penetrates the working channel and the outside of the clamping and shackle releasing module in the horizontal direction, and penetrates the upper side and the lower side of the clamping and shackle releasing module in the vertical direction. The free end of the first driving device is connected to the clamping and shackle releasing module. There is a first working position on the reverse circulation drilling rig, and the first working position is located directly above the drill hole. The first driving device can drive the clamping and shackle releasing module to slide to the first working position and enable the drill pipe to enter the working channel from the inlet. The clamping and shackle releasing module can clamp a section of the drill pipe in the working channel and loosen the thread at the connection between this section of the drill pipe and the drill pipe above it. The first driving device can also drive the clamping and shackle releasing module to slide in a direction away from the first working position and enable the drill pipe to leave the working channel from the inlet.

[0006] Preferably, the clamping and shackle releasing module comprises a base, a second driving device and a clamp. The base is used for sliding connection on the reverse circulation drilling rig. The clamp is rotatably connected to the upper side of the base around a first rotating shaft. A first channel communicating the upper and lower sides of the clamp is arranged on the clamp. A second channel communicating the upper and lower sides of the base is arranged on the base. The first channel and the second channel penetrate through and form the working channel. The first rotating shaft extends in the vertical direction and passes through the inside of the working channel. The second driving device is arranged on the base, and the free end of the second driving device is connected to the clamp. The clamp can rotate around the first rotating shaft under the drive of the second driving device.

[0007] Preferably, the clamp comprises a clamping seat and a plurality of third driving devices. The clamping seat is rotatably connected to the upper side of the base around a first rotating shaft. The first channel is arranged on the clamping seat and communicates the upper and lower sides of the clamping seat. The plurality of third driving devices are sequentially arranged on the clamping seat along the circumference of the first channel. A clamping portion is arranged at the free end of each third driving device. Each third driving device can drive each clamping portion to approach or move away from the first rotating shaft to clamp or loosen the drill pipe.

[0008] Preferably, there are two receiving cavities in the clamping seat. Both of the two receiving cavities are provided with openings communicating with the inside of the first channel. One third driving device is arranged in each of the two receiving cavities. The two clamping parts on the two third driving devices are arranged oppositely. The two clamping parts can extend out of or retract into the receiving cavities through the openings under the drive of the third driving devices.

[0009] Preferably, the second driving device is an oil cylinder. One end of the oil cylinder is hinged to the base around a vertical rotating shaft. The side of the clamping seat away from the inlet is the first side. The piston rod of the oil cylinder is hinged to the first side around a second rotating shaft. The first side is a plane. The plane perpendicular to the first side and passing through the first rotating shaft is the first plane. The second rotating shaft has a spacing from the first plane.

[0010] Preferably, it further includes a pull plate. One side of the first channel is provided with a first inlet penetrating through the upper and lower sides of the clamping seat. One side of the second channel is provided with a second inlet penetrating through the upper and lower sides of the base. The upper end of the first inlet and the lower end of the second inlet communicate with each other to form the inlet. The side surfaces of the clamping seat on the two horizontal sides of the first inlet are the second side and the third side respectively. One end of the pull plate is rotatably connected to the second side. A limiting block is arranged on the other end of the pull plate on the third side. The pull plate has a limiting surface facing the second side. The pull plate can rotate so that the limiting surface contacts the limiting block.

[0011] Preferably, the clamping part is detachably connected to the free end of the third driving device.

[0012] Preferably, a guiding slideway is arranged on the clamping seat. The extending track of the guiding slideway is a partial circumference. The center of the partial circumference is located on the first rotating shaft. A guiding part is fixedly connected to the base. One end of the guiding part is slidably connected in the guiding slideway.

[0013] The utility model has achieved the following technical effects compared with the prior art:

[0014] For the shackle releasing device for the reverse circulation drilling rig provided by the utility model, before the drill pipe needs to release the shackle, the device will not occupy the first working position and thus will not affect the operation of workers; when releasing the shackle, the first driving device is used to drive the clamping and shackle releasing module to slide to the first working position, and the drill pipe is made to enter the working channel from the inlet, then the shackle releasing operation can be completed by using the clamping and shackle releasing module, reducing the manual labor intensity and the construction cost; after the shackle releasing operation is completed, the clamping and shackle releasing module can slide away from the first working position under the drive of the first driving device and retract into the body of the reverse circulation drilling rig. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 The front view of the shackle device for a reverse circulation drilling rig provided by the present invention;

[0017] Figure 2 The side view of the shackle device for a reverse circulation drilling rig provided by the present invention;

[0018] Figure 3 The top view of the shackle device for a reverse circulation drilling rig provided by the present invention;

[0019] Figure 4 The front view of the gripper in the shackle device for a reverse circulation drilling rig provided by the present invention;

[0020] In the figure: 1 - clamping shackle module, 2 - base, 3 - second driving device, 4 - gripper, 41 - clamping seat, 411 - first channel, 412 - second channel, 413 - first inlet, 414 - second inlet, 42 - third driving device, 43 - clamping part, 44 - first side, 45 - second side, 46 - third side, 47 - limiting block, 5 - pull plate, 51 - limiting surface, 52 - limiting groove, 6 - guiding slideway, 7 - guiding part. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide a shackle device for a reverse circulation drilling rig to solve the problems existing in the prior art, which can not only assist in unshackling, reduce the labor intensity of workers, but also avoid affecting the operation of workers during the drilling process.

[0023] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0024] The present invention provides a shackle device for a reverse circulation drilling rig, as Figures 1-4As shown in the figure, it includes a clamping shackle module 1 and a first driving device. The clamping shackle module 1 is used for slidably connecting to the body of the reverse circulation drill. A working channel extending in the vertical direction is provided on the clamping shackle module 1. The working channel communicates with the upper and lower sides of the clamping shackle module 1. An inlet is provided on one side of the working channel. The inlet penetrates the working channel and the outside of the clamping shackle module 1 in the horizontal direction, and penetrates the upper and lower sides of the clamping shackle module 1 in the vertical direction. The free end of the first driving device is connected to the clamping shackle module 1. There is a first working position on the reverse circulation drill, and the first working position is located above the drill hole. The first driving device can drive the clamping shackle module 1 to slide to the first working position and make the drill pipe enter the working channel from the inlet. The clamping shackle module 1 can clamp a section of the drill pipe in the working channel and loosen the thread at the connection between this section of the drill pipe and the drill pipe above it. The first driving device can also drive the clamping shackle module 1 to slide in a direction away from the first working position and make the drill pipe leave the working channel from the inlet.

[0025] For the shackle device for the reverse circulation drill provided by the present utility model, before the shackle of the drill pipe is required, the device will not occupy the first working position and thus will not affect the operation of the workers. When performing the shackle removal, the first driving device is used to drive the clamping shackle module 1 to slide to the first working position and make the drill pipe enter the working channel from the inlet, and then the shackle removal operation can be completed by using the clamping shackle module, which reduces the manual labor intensity and construction cost. After the shackle removal operation is completed, the clamping shackle module 1 can slide under the drive of the first driving device to move away from the first working position and retract into the body of the reverse circulation drill. Among them, the first driving device is preferably an oil cylinder, and one end of the piston rod of the oil cylinder forms the free end of the first driving device and is hinged to the clamping shackle module 1.

[0026] In a preferred implementation manner of this embodiment, the clamping and shackle module 1 includes a base 2, a second driving device 3 and a clamp 4, the base 2 is used to be slidably connected to the reverse circulation drilling rig, the clamp 4 is rotatably connected to the upper side of the base 2 around a first rotating shaft, and a first channel 411 connecting the upper and lower sides of the clamp 4 is provided on the clamp 4, and a second channel 412 connecting the upper and lower sides of the base 2 is provided on the base 2. The first channel 411 and the second channel 412 are connected to form a working channel, and the first rotating shaft extends in a vertical direction and passes through the interior of the working channel. The second driving device 3 is provided on the base 2, and the free end of the second driving device 3 is connected to the clamp 4. The clamp 4 can rotate around the first rotating shaft under the drive of the second driving device 3. When performing the shackle operation, the clamping and shackle module 1 moves under the drive of the first driving device, the drill pipe enters the working channel, the axis of the drill pipe should coincide with the first rotating shaft, the clamp 4 is used to clamp a section of the drill pipe, and the second driving device 3 drives the clamp 4 to rotate in the direction of loosening the thread, so as to loosen the first buckle, and then the reverse circulation drilling rig reverses the drill pipe above the clamped drill pipe (i.e., rotates in the opposite direction to the rotation direction during drilling), so as to release the threaded connection of the two sections of the drill pipe, thereby completing the shackle operation. Among them, the free end of the first driving device is hinged on the upper side of the base 2.

[0027] In a preferred implementation of this embodiment, the clamp 4 includes a clamping seat 41 and a plurality of third driving devices 42. The clamping seat 41 is connected to the upper side of the base 2 by rotating around the first rotating shaft. The first channel 411 is arranged on the clamping seat 41 and connects the upper and lower sides of the clamping seat 41. The plurality of third driving devices 42 are arranged on the clamping seat 41 in sequence along the circumference of the first channel 411. A clamping portion 43 is arranged at the free end of each third driving device 42. Each third driving device 42 can drive each clamping portion 43 to approach or move away from the first rotating shaft to clamp or release the drill rod. When the drill rod enters the working channel and the axis of the drill rod coincides with the first rotating shaft, each third driving device 42 can drive the clamping portion 43 to move toward the first rotating shaft to clamp the drill rod. Using the third driving device 42 to drive the clamping portion 43 to clamp the drill rod can further reduce the workload of the workers.

[0028] In a preferred implementation of this embodiment, the clamping seat 41 has two accommodating chambers, both of which are provided with openings communicating with the interior of the first channel 411, and both of which are provided with a third driving device 42. The two clamping parts 43 on the two third driving devices 42 are arranged opposite to each other, and the two clamping parts 43 can extend or retract into the accommodating chamber through the openings under the drive of the third driving device 42. When the drill rod enters the working channel from the entrance, the clamping parts 43 are retracted into the accommodating chamber, which can prevent the clamping parts 43 from colliding with the drill rod and affecting the normal movement of the clamping and shackle module. The clamping parts 43 are preferably slips.

[0029] In a preferred embodiment of the first embodiment, the second driving device 3 is an oil cylinder. One end of the oil cylinder is hinged to the base 2 around a vertical rotating shaft. The side of the clamping seat 41 away from the inlet is the first side 44. The piston rod of the oil cylinder is hinged to the first side 44 around a second rotating shaft. The first side 44 is a plane. The plane perpendicular to the first side 44 and passing through the first rotating shaft is the first plane. The second rotating shaft has a distance from the first plane. The oil cylinder can provide greater power for the rotation of the clamping seat 41, making it more convenient to release the buckle.

[0030] In a preferred embodiment of the first embodiment, a pull plate 5 is further included. One side of the first channel 411 is provided with a first inlet 413 penetrating through the upper and lower sides of the clamping seat 41. One side of the second channel 412 is provided with a second inlet 414 penetrating through the upper and lower sides of the base 2. The upper end of the first inlet 413 and the lower end of the second inlet 414 are connected and form an inlet. The side surfaces of the clamping seat 41 on the horizontal two sides of the first inlet 413 are the second side 45 and the third side 46 respectively. One end of the pull plate 5 is rotatably connected to the second side 45. A limiting block 47 is provided on the other end of the pull plate 5 on the third side 46. The pull plate 5 has a limiting surface 51 facing the second side 45. The pull plate 5 can rotate to make the limiting surface 51 contact the limiting block 47. When the gripper 4 clamps the drill pipe, the two clamping parts 43 are pressed against the drill pipe and will generate a reaction force on the clamping seat 41. In order to prevent deformation at the first opening, the pull plate 5 can be lowered and the first limiting surface 51 can be made to contact the limiting block 47 to share the reaction force generated by clamping. Among them, one end of the pull plate 5 is rotatably connected to the second side 45 around a horizontal rotating shaft. A limiting groove 52 is provided at the lower part of the end of the pull plate 5 away from the second side 45. The inner side wall of the limiting groove 52 away from the second side 45 forms the limiting surface 51.

[0031] In a preferred embodiment of the first embodiment, the clamping part 43 is detachably connected to the free end of the third driving device 42. When it is necessary to perform a buckle release operation on drill pipes of different diameters, different clamping parts 43 can be replaced to make the clamping part 43 match the size of the drill pipe, improving the applicable range of the device.

[0032] In a preferred embodiment of the first embodiment, a guiding slideway 6 is provided on the clamping seat 41. The extending track of the guiding slideway 6 is a partial circumference. The center of the partial circumference is located on the first rotating shaft. A guiding member 7 is fixedly connected to the base 2. One end of the guiding member 7 is slidably connected in the guiding slideway 6. The guiding member 7 and the guiding slideway 6 can cooperate with each other to further improve the stability when the clamping seat 41 rotates relative to the base 2.

[0033] In this utility model, specific examples are used to elaborate on the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and its core idea of the utility model; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation on the utility model.

Claims

1. An unloading buckle device for a reverse circulation drilling rig, characterized in that: Comprising: A clamping shackle module and a first driving device. The clamping shackle module is used for sliding connection on the body of the reverse circulation drill rig. A working channel extending in the vertical direction is provided on the clamping shackle module. The working channel communicates the upper side and the lower side of the clamping shackle module. An inlet is provided on one side of the working channel. The inlet penetrates the working channel and the outside of the clamping shackle module in the horizontal direction, and penetrates the upper side and the lower side of the clamping shackle module in the vertical direction. The free end of the first driving device is connected to the clamping shackle module. There is a first working position on the reverse circulation drill rig, and the first working position is located directly above the drill hole. The first driving device can drive the clamping shackle module to slide to the first working position and enable the drill pipe to enter the working channel from the inlet. The clamping shackle module can clamp a section of the drill pipe in the working channel and loosen the thread at the connection between this section of the drill pipe and the drill pipe above it. The first driving device can also drive the clamping shackle module to slide in a direction away from the first working position and enable the drill pipe to leave the working channel from the inlet.

2. The shackle device for a reverse circulation drilling rig according to claim 1, characterized in that: The clamping shackle module includes a base, a second driving device and a gripper. The base is used for sliding connection on the reverse circulation drill rig. The gripper is rotatably connected to the upper side of the base around a first rotating shaft. A first channel communicating the upper and lower sides of the gripper is provided on the gripper. A second channel communicating the upper and lower sides of the base is provided on the base. The first channel and the second channel penetrate through and form the working channel. The first rotating shaft extends in the vertical direction and passes through the inside of the working channel. The second driving device is provided on the base, and the free end of the second driving device is connected to the gripper. The gripper can rotate around the first rotating shaft under the drive of the second driving device.

3. The shackle device for a reverse circulation drill rig according to claim 2, wherein: The gripper includes a clamping seat and a plurality of third driving devices. The clamping seat is rotatably connected to the upper side of the base around a first rotating shaft. The first channel is provided on the clamping seat and communicates the upper and lower sides of the clamping seat. A plurality of the third driving devices are sequentially arranged on the clamping seat along the circumference of the first channel. A clamping portion is provided at the free end of each of the third driving devices. Each of the third driving devices can drive each of the clamping portions to approach or move away from the first rotating shaft to clamp or loosen the drill pipe.

4. The shackle device for a reverse circulation drill rig according to claim 3, characterized in that: Two accommodating cavities are provided in the clamping seat. Openings communicating with the inside of the first channel are provided in both of the two accommodating cavities. One of the third driving devices is provided in each of the two accommodating cavities. The two clamping portions on the two third driving devices are arranged oppositely. The two clamping portions can extend out of or retract into the accommodating cavities through the openings under the drive of the third driving devices.

5. The shackle device for a reverse circulation drilling rig according to claim 3, characterized in that: The second driving device is an oil cylinder. One end of the oil cylinder is hinged to the base around a vertical rotating shaft. The side of the clamping seat away from the inlet is the first side. The piston rod of the oil cylinder is hinged to the first side around a second rotating shaft. The first side is a plane, and the plane perpendicular to the first side and passing through the first rotating shaft is the first plane. The second rotating shaft has a spacing from the first plane.

6. The shackle device for a reverse circulation drill rig according to claim 3, characterized in that: It further includes a pull plate. One side of the first channel is provided with a first inlet penetrating through the upper and lower sides of the clamping seat. One side of the second channel is provided with a second inlet penetrating through the upper and lower sides of the base. The upper end of the first inlet and the lower end of the second inlet are connected and form the inlet. The side surfaces of the clamping seat on both horizontal sides of the first inlet are the second side and the third side respectively. One end of the pull plate is rotatably connected to the second side. A limiting block is provided on the third side at the other end of the pull plate. The pull plate has a limiting surface facing the second side, and the pull plate can rotate so that the limiting surface contacts the limiting block.

7. The shackle device for a reverse circulation drill rig according to claim 3, characterized in that: The clamping part is detachably connected to the free end of the third driving device.

8. The shackle releasing device for a reverse circulation drilling rig according to claim 3, characterized in that: A guiding slideway is arranged on the clamping seat. The extending track of the guiding slideway is a partial circumference, and the center of the partial circumference is located on the first rotating shaft. A guiding member is fixedly connected to the base, and one end of the guiding member is slidably connected in the guiding slideway.

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