Plug-in type screen pipe tripping-in equipment for coal mine and drilling machine

Abstract

The utility model provides a plug-in type sieve tube tripping-in equipment and a drilling machine for a coal mine, the drilling machine comprises a feeding machine body mounted on a crawler vehicle body, and a drilling machine power head, a sieve tube tripping-in device, a drilling machine holder, a drilling machine shackle device and a conveying device are sequentially mounted on one transverse side of the feeding machine body from back to front; a clamping assembly is fixedly installed on the front side of the conveying device. A travel switch assembly is installed on the drilling machine holder, a centering assembly is installed on the drilling machine shackle device, a drill rod bin is installed on the other transverse side of the feeding machine body, and a screen pipe bin is detachably installed on the top of the drill rod bin. When the full-automatic screen pipe tripping-in device is used for full-automatic screen pipe tripping-in construction, after gas extraction drilling construction is completed, the full-automatic screen pipe tripping-in hole protection construction can be rapidly carried out without moving a drilling machine or adjusting the position and posture of the drilling machine to align a drill hole again, and the construction efficiency and safety are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas extraction and prevention equipment, and relates to directional drilling rigs and their auxiliary equipment, specifically to a plug-in screen pipe lowering device and drilling rig for coal mines. Background Technology

[0002] Gas hazards are a major threat to safe coal mine production. To ensure safe production, pre-drainage of gas must be carried out before coal seam mining to reduce the gas content. Coal mining enterprises use underground drilling rigs to drill gas drainage boreholes. After the borehole reaches the designed depth, the drill rod is pulled out. To ensure gas drainage efficiency, the borehole needs to be protected to prevent collapse due to soft coal seams or high gas pressure, which could block the gas drainage channel. Currently, the main method is to use a borehole protection screen, which is lowered to the bottom of the hole after the drill is pulled out.

[0003] Coal mining enterprises mainly use two methods to lower the borehole screen: manual insertion and manual lowering, and manual insertion combined with mechanical lowering. Manual insertion is labor-intensive and poses a risk of injury when lowering the screen in cross-layer holes. Manual insertion combined with mechanical lowering typically involves integrating a mechanical lowering device into the drilling rig's feed unit. Because the lowering device and the drilling rig's power head are not coaxial, after the drill rod is pulled out of the borehole, the drilling rig needs to be moved again or its position adjusted to align with the borehole, affecting construction efficiency. Alternatively, the lowering device can be coaxial with the power head, but manual insertion is still required, which is labor-intensive and poses safety hazards. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a plug-in screen pipe lowering device and drilling rig for coal mines, which solves the technical problem that after the completion of gas drainage drilling, it is necessary to move the drilling rig or adjust the drilling rig position to realign the drilling hole, resulting in a decrease in both construction efficiency and safety.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A plug-in screen tube lowering device for coal mines includes a screen tube lowering device; a centering component is provided in front of the screen tube lowering device, and a limit switch component is provided on one side of the screen tube lowering device; a conveying device is provided in front of the centering component, and a clamping component is fixedly installed on the longitudinal front side of the conveying device; a drill rod chamber is provided on the other side of the screen tube lowering device, and a screen tube chamber is detachably installed on the top of the drill rod chamber.

[0007] The screen tube lowering device includes a screen tube lowering swing cylinder mounting frame, on which the cylinder of the screen tube lowering swing cylinder is fixedly mounted. The cylinder rod of the screen tube lowering swing cylinder is fixedly connected to the lateral outer end of the rotating arm, and the lateral inner end of the rotating arm is fixedly connected to the lateral outer side of the connecting plate.

[0008] A push rod cylinder mounting bracket is fixedly installed on the longitudinal rear side of the transverse inner side of the connecting plate. The push rod cylinder mounting bracket is located on the longitudinal rear side of the connecting plate. The cylinder barrel of the push rod cylinder is fixedly installed on the push rod cylinder mounting bracket. A screen tube push plate is fixedly installed on the cylinder rod of the push rod cylinder. Pipe clamps and liners are fixedly installed on the push rod cylinder mounting bracket from back to front.

[0009] A straightening tube mounting bracket is fixedly installed on the longitudinal front side of the transverse inner side of the connecting plate, and a straightening tube is fixedly installed on the straightening tube mounting bracket; the screen tube push plate, tube clamp, liner and straightening tube mounting bracket are coaxially arranged.

[0010] This utility model also has the following technical features:

[0011] The centering assembly includes a connecting flange, a limiting member is fixedly installed on the inner side of the connecting flange, and a centering pipe is fixedly installed on the inner side of the limiting member. The centering pipe is coaxially arranged with the screen pipe push plate, pipe clamp, liner and straightening pipe mounting bracket.

[0012] The limit switch assembly includes a limit switch mounting bracket. A pair of ear plates are integrally formed on the top of the mounting bracket, each ear plate having a through hole. A rotating shaft is positioned laterally between the pair of ear plates, with both ends of the shaft rotatably mounted within the through holes on the ear plates. An angle adjusting nut is installed on each end of the shaft, located outside the ear plates. The rotating shaft has multiple position adjusting holes evenly spaced laterally. A limit switch mounting plate is detachably mounted on the shaft via position adjusting bolts, and a limit switch is fixedly mounted on the mounting plate.

[0013] A limit switch cover is fixedly installed on the limit switch mounting plate, and the limit switch is located inside the limit switch cover.

[0014] The conveying device includes a conveying swing cylinder mounting frame, a rotating frame is fixedly connected to the longitudinal rear side of the conveying swing cylinder mounting frame, a conveying swing cylinder is fixedly installed on one transverse side of the conveying swing cylinder mounting frame, and the conveying swing cylinder is fixedly connected to the rotating frame; the other transverse side of the conveying swing cylinder mounting frame is fixedly connected to the conveying box.

[0015] The drill pipe compartment includes a bottom frame, with a drill pipe compartment side plate fixedly installed on each of the two transverse sides of the bottom frame, the side plates being arranged vertically; a pair of drill pipe compartment door panels are fixedly installed on each of the two longitudinal sides of the bottom frame, the door panels being arranged vertically, with a gap between the two door panels on the same side; and a top frame is fixedly installed on the top of the side plates and door panels.

[0016] The screen tube compartment includes a screen tube frame, and multiple screen tube supports are provided on the top edge of the screen tube frame. The screen tube supports are provided with U-shaped grooves, and the screen tube supports are clamped onto the screen tube frame through the U-shaped grooves.

[0017] The coal mine plug-in screen tube lowering device also includes a screen tube quick-installation gripper, which can move to the top of the screen tube chamber; the screen tube quick-installation gripper includes a gripper body, and multiple gripper plates are provided at the bottom of the gripper body. The multiple gripper plates are arranged in pairs, and the inner side of the gripper plate is an arc surface that matches the shape of the screen tube.

[0018] The gripper plate is connected to the gripper body via a spring pin.

[0019] This utility model also protects a drilling rig equipped with the above-described plug-in screen pipe lowering device for coal mines, comprising a tracked vehicle body, on which a feed body is mounted. The feed body is characterized in that, from rear to front, a drilling rig power head, a screen pipe lowering device, a drilling rig clamp, a drilling rig unhooking device, and a conveying device are sequentially mounted on one transverse side of the feed body; a limit switch assembly is mounted on the drilling rig clamp, and an alignment assembly is mounted on the drilling rig unhooking device; a drill rod chamber is mounted on the other transverse side of the feed body.

[0020] Compared with the prior art, this utility model has the following technical effects:

[0021] This utility model discloses a fully automatic, plug-in screen pipe quick-installation device and construction method for coal mines, applicable to the installation of screen pipes in underground gas drainage boreholes in coal mines. The screen pipe compartment can be quickly installed onto the drill rod compartment. The arrangement of the screen pipes in the compartment is consistent with that of the drill rod. A robotic arm can be used to transport the screen pipes from the compartment to the installation position. The screen pipes and drill rods share a single robotic arm, improving component utilization and reducing equipment size. When in standby mode, the screen pipe installation device is positioned to the side of the drill rig's feed device, without interfering with drilling operations. During installation, the device rotates to the working position, coaxial with the drill rig's power head spindle, ensuring coaxial installation of the screen pipes with the borehole. This eliminates the need to move the drill rig or adjust its position for re-alignment, improving construction efficiency. Both the alignment component and the limit switch component feature a quick-installation design, allowing for rapid installation onto the clamp without affecting drilling operations, further enhancing efficiency. The conveying device is located at the front end of the feeding device, and together with the screen tube lowering device, it realizes the fully automatic lowering of the screen tube into the borehole. Attached Figure Description

[0022] Figure 1 This is a construction diagram of a plug-in screen pipe lowering device for coal mines.

[0023] Figure 2 This is a schematic diagram of the overall structure of a plug-in screen lowering device for coal mines.

[0024] Figure 3 This is a schematic diagram of the screen tube lowering device.

[0025] Figure 4 This is a schematic diagram of the structure of the centering component.

[0026] Figure 5 This is a schematic diagram of the limit switch assembly.

[0027] Figure 6 This is a schematic diagram of the conveying device.

[0028] Figure 7 This is a cross-sectional view of the internal structure of the conveying device.

[0029] Figure 8 This is a schematic diagram of the conveying device and the clamping device.

[0030] Figure 9 This is a schematic diagram of the drill rod compartment and screen tube compartment.

[0031] Figure 10 This is a schematic diagram of the quick-release gripper for screen tubes.

[0032] Figure 11 This is a schematic diagram of the control logic.

[0033] Figure 12 A schematic diagram illustrating the process of fully automated screen pipe lowering construction using the equipment of this utility model; Figure 12 In the diagram, (A), (B), (C), and (D) illustrate the different stages of the fully automated lowering of the screen tube.

[0034] The meanings of the labels in the diagram are as follows: 1-screen tube lowering device, 2-centering assembly, 3-limit switch assembly, 4-conveying device, 5-clamping assembly, 6-drill rod chamber, 7-screen tube chamber, 8-screen tube quick-release gripper, 9-feeding machine body, 10-drilling rig power head, 11-drilling rig clamp, 12-drilling rig unlatcher, 13-drilling rig angle adjustment device, 14-screen tube, 15-drill hole.

[0035] 101-Screen tube lowering swing cylinder mounting bracket, 102-Screen tube lowering swing cylinder, 103-Rotating arm, 104-Connecting plate, 105-Push rod cylinder mounting bracket, 106-Push rod cylinder, 107-Screen tube push plate, 108-Pipe clamp, 109-Liner plate, 110-Straightening pipe mounting bracket, 111-Straightening pipe.

[0036] 201-Connecting flange, 202-Limiting element, 203-Centering fitting.

[0037] 301-Limit switch mounting bracket, 302-Ear plate, 303-Spindle, 304-Angle adjusting nut, 305-Position adjusting hole, 306-Position adjusting bolt, 307-Limit switch mounting plate, 308-Limit switch, 309-Limit switch cover.

[0038] 401-Conveyor box, 402-Conveyor cycloidal motor, 403-Sprocket, 404-Drive wheel, 405-Limit wheel, 406-Conveyor channel, 407-Reset spring, 408-Reset cylinder, 409-Conveyor swing cylinder mounting bracket, 410-Rotating frame, 411-Conveyor swing cylinder.

[0039] 501-Clamping mounting bracket, 502-Clamping cylinder, 503-Screen tube slot, 504-Clamping slip.

[0040] 601-Bottom frame of drill pipe compartment, 602-Side plate of drill pipe compartment, 603-Door panel of drill pipe compartment, 604-Top frame of drill pipe compartment.

[0041] 701-Sieve tube frame, 702-Sieve tube upper support.

[0042] 801 - Hand gripper body, 802 - Gripper plate, 803 - Spring pin.

[0043] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, all components in this utility model are known in the art. For example, the drill rig clamp 11 is a drill rig clamp known in the prior art; the drill rig unhooking device 12 is a drill rig unhooking device known in the prior art.

[0045] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0046] Example 1:

[0047] This embodiment provides a plug-in screen tube lowering device for coal mines, such as... Figure 1 and Figure 2 As shown, the device includes a screen tube lowering device 1, a centering component 2 is provided in front of the screen tube lowering device 1, a limit switch component 3 is provided on one side of the screen tube lowering device 1 in the lateral direction, a conveying device 4 is provided in front of the centering component 2, a clamping component 5 is fixedly installed on the front longitudinal direction of the conveying device 4, and a drill rod chamber 6 is provided on the other side of the screen tube lowering device 1 in the lateral direction, and a screen tube chamber 7 is detachably installed on the top of the drill rod chamber 6.

[0048] As one specific solution in this embodiment, such as Figure 3 As shown, the screen tube lowering device 1 includes a screen tube lowering swing cylinder mounting bracket 101. A cylinder of a screen tube lowering swing cylinder 102 is fixedly mounted on the mounting bracket 101. The cylinder rod of the screen tube lowering swing cylinder 102 is fixedly connected to the lateral outer end of a rotating arm 103. The lateral inner end of the rotating arm 103 is fixedly connected to the lateral outer side of a connecting plate 104. A push rod cylinder mounting bracket 105 is fixedly mounted on the longitudinal rear side of the lateral inner side of the connecting plate 104. The push rod cylinder mounting bracket 105 is located on the longitudinal rear side of the connecting plate 104. The cylinder barrel of the push rod cylinder 106 is fixedly installed on the push rod cylinder mounting bracket 105. The screen tube push plate 107 is fixedly installed on the cylinder rod of the push rod cylinder 106. The pipe clamp 108 and the liner 109 are fixedly installed on the push rod cylinder mounting bracket 105 from back to front. The straightening tube mounting bracket 110 is fixedly installed on the longitudinal front side of the transverse inner side of the connecting plate 104. The straightening tube 111 is fixedly installed on the straightening tube mounting bracket 110. The screen tube push plate 107, the pipe clamp 108, the liner 109 and the straightening tube mounting bracket 110 are coaxially arranged.

[0049] In this embodiment, the screen tube lowering swing cylinder mounting bracket 101 is fixedly connected to the feeding machine body 9 by bolts. The cylinder barrel of the screen tube lowering swing cylinder 102 is fixedly connected to the screen tube lowering swing cylinder mounting bracket 101 by bolts, and the cylinder rod of the screen tube lowering swing cylinder 102 is fixedly connected to the rotating arm 103 by bolts. The screen tube lowering swing cylinder 102 and the rotating arm 103 provide rotational power for the screen tube lowering device, enabling it to switch between the standby position and the working position.

[0050] In this embodiment, the connecting plate 104 and the rotating arm 103 are fixedly connected by bolts, the push rod cylinder mounting bracket 105 is fixedly connected to the connecting plate 104 by bolts, the cylinder barrel of the push rod cylinder 106 is fixedly mounted on the push rod cylinder mounting bracket 105 by bolts, and the screen tube push plate 107 is fixed to the cylinder rod of the push rod cylinder 106 with a nut. The push rod cylinder 106 drives the screen tube push plate 107 to move along the guide groove direction of the push rod cylinder mounting bracket 105, pushing the screen tube into the centering assembly and completing the screen tube insertion.

[0051] In this embodiment, the liner 109 and the pipe clamp 108 are fixedly connected to the push rod cylinder mounting bracket 105 by bolts. The liner 109 is used to support the screen tube to ensure the coaxiality of the newly added screen tube and the screen tube in the hole. The pipe clamp 108 is used to fix the newly added screen tube to prevent the newly added screen tube from sliding up and down when passing through the layer hole, and at the same time, it can also ensure the coaxiality of the newly added screen tube and the screen tube in the hole.

[0052] In this embodiment, the straightening tube mounting bracket 110 is fixedly mounted on the connecting plate 104 by bolts, and the straightening tube 111 is fixedly mounted on the straightening tube mounting bracket 110 by bolts. The straightening tube 111 is used to support the screen tube and ensure the coaxiality of the newly added screen tube and the screen tube in the hole.

[0053] As one specific solution in this embodiment, such as Figure 4 As shown, the centering assembly 2 includes a connecting flange 201. A limiting member 202 is fixedly installed on the inner side of the connecting flange 201. A centering pipe 203 is fixedly installed on the inner side of the limiting member 202. The centering pipe 203 is coaxially arranged with the screen pipe push plate 107, the pipe clamp 108, the liner 109 and the straightening pipe mounting bracket 110.

[0054] In this embodiment, the connecting flange 201 is fixedly installed on the drilling rig unhooker 12 by bolts. The limiting member 202 and the centering pipe 203 are integrated by welding, and the two together form the centering assembly. The limiting member 202 has multiple sets of pin holes, and a pin is installed in the pin hole. The limiting member 202 and the connecting flange 201 are connected by the pin hole 503 and the pin to limit the axial position of the centering assembly. The centering assembly and the connecting flange 201 are coaxial and connected by a slot to limit the circumferential movement of the centering assembly.

[0055] As one specific solution in this embodiment, such as Figure 5 As shown, the limit switch assembly 3 includes a limit switch mounting bracket 301. A pair of ear plates 302 are integrally provided on the top of the limit switch mounting bracket 301. The ear plates 302 have through holes. A rotating shaft 303 is arranged between the pair of ear plates 302 along the horizontal direction. The two ends of the rotating shaft 303 are rotatably installed in the through holes on the two ear plates 302. An angle adjusting nut 304 is installed on each end of the rotating shaft 303. The angle adjusting nut 304 is located on the outside of the ear plate 302. The rotating shaft 303 has multiple position adjusting holes 305. The multiple position adjusting holes 305 are evenly spaced along the horizontal direction. A limit switch mounting plate 307 is detachably installed on the rotating shaft 303 by a position adjusting bolt 306. A limit switch 308 is fixedly installed on the limit switch mounting plate 307.

[0056] In this embodiment, the limit switch mounting bracket 301 is fixedly connected to the drilling rig holder 11 by bolts, the limit switch 308 is fixedly connected to the limit switch mounting plate 307 by bolts, the rotating shaft 303 is mounted on the limit switch mounting bracket, the limit switch mounting plate 307 is arranged on the rotating shaft 303 and can move along the axis of the rotating shaft, the position is fixed by the position adjustment hole 305 and the position adjustment bolt 306, thereby adjusting the position of the limit switch 308, and the tilt angle of the limit switch 308 is adjusted by the angle adjustment nut 304.

[0057] In this embodiment, the limit switch 308 is used to detect whether the robotic arm with the extension rod has transported the new screen tube to the push position, and can also detect whether the new screen tube female head has reached the insertion position.

[0058] As one specific solution in this embodiment, such as Figure 5 As shown, a limit switch cover 309 is fixedly installed on the limit switch mounting plate 307, and the limit switch 308 is disposed inside the limit switch cover 309. In this embodiment, the limit switch cover 309 is fixedly connected to the limit switch mounting plate 307 by bolts, and the limit switch cover 309 and the limit switch mounting plate 307 protect the limit switch 308 from damage.

[0059] As one specific solution in this embodiment, such as Figure 6 As shown, the conveying device 4 includes a conveying swing cylinder mounting frame 409. A rotating frame 410 is fixedly connected to the longitudinal rear side of the conveying swing cylinder mounting frame 409. A conveying swing cylinder 411 is fixedly installed on one side of the conveying swing cylinder mounting frame 409. The conveying swing cylinder 411 is fixedly connected to the rotating frame 410. The other side of the conveying swing cylinder mounting frame 409 is fixedly connected to the conveying box 401.

[0060] In this embodiment, the conveying swing cylinder mounting bracket 409 is fixedly connected to the feed machine body 9 by bolts, the conveying swing cylinder 411 is fixedly connected to the conveying swing cylinder mounting bracket 409 and the rotating frame 410 by bolts, the conveying swing cylinder mounting bracket 409 is fixedly connected to the conveying box 401 by bolts, and the clamping assembly 5 is fixedly connected to the conveying box 401 by bolts; the conveying swing cylinder 411 drives the rotating frame 410 to move the clamping assembly 5 and the conveying device 4 between the standby position and the working position.

[0061] As one specific solution in this embodiment, such as Figure 7 and Figure 8As shown, the conveying box 401 has a conveying device screen tube inlet on its longitudinal rear side and a conveying device screen tube outlet on its longitudinal front side; a conveying cycloidal motor 402 is fixedly installed inside the top of the conveying box 401, the conveying cycloidal motor 402 is arranged in the transverse direction, and a sprocket 403 is rotatably mounted on the motor shaft of the conveying cycloidal motor 402; a pair of drive wheels 404 are rotatably installed inside the conveying box 401 below the conveying cycloidal motor 402, and a sprocket 403 is mounted on the central shaft of the drive wheels 404. 3. It is connected to the conveying cycloidal motor 402 via a chain; a limit wheel 405 is provided below the drive wheel 404, and the two sides of the drive wheel 404 and the limit wheel 405 are in close contact. The gap between the drive wheel 404 and the limit wheel 405 is the conveying channel 406, through which the screen tube can pass; the bottom ends of two pairs of return springs 407 are fixedly installed on the bottom surface of the conveying box 401, and the top ends of the return springs 407 are connected to the central axis of the limit wheel 405. A return cylinder 408 is provided above the central axis of the limit wheel 405.

[0062] In this embodiment, the conveying cycloidal motor 402, sprocket 403, drive wheel 404, limit wheel 405, return spring 407, and return cylinder 408 together form a conveying assembly for lowering the newly added screen tube into the hole. The conveying cycloidal motor 402 provides transmission power to the conveying device, driving the sprocket 403 to rotate. The sprocket 403 and drive wheel 404 are connected by a chain drive, which drives the drive wheel 404 to rotate. The shaft of the limit wheel 405 is located inside. When the return cylinder 408 and return spring 407 extend or retract, the limit wheel 405 moves up and down. In normal operation, the return spring 407 presses the limit wheel 405 tightly against the drive wheel 404, preventing the screen tube between the drive wheel 404 and the limit wheel 405 from suddenly sliding down and causing a safety accident. When the conveying device begins to lower the screen tube into the hole, the piston rod of the reset cylinder 408 extends, driving the limit wheel 405 to move downward and disengage from the drive wheel 404, ensuring that the screen tube can pass through the conveying channel 406 between the drive wheel 404 and the limit wheel 405. After the end of the screen tube extends out of the conveying channel 406, the piston rod of the reset cylinder 408 retracts, and the reset spring 407 presses the limit wheel 405 tightly against the surface of the screen tube. The conveying cycloidal motor 402 drives the drive wheel 404 to rotate, and under the action of friction, the screen tube is lowered into the hole.

[0063] As one specific solution in this embodiment, such as Figure 8As shown, the clamping assembly 5 includes a clamping mounting frame 501, which is fixedly mounted on the longitudinal front side of the conveying box 401. A clamping cylinder 502 is fixedly mounted on each of the two transverse sides of the clamping mounting frame 501. The clamping cylinders 502 are arranged transversely, with the outer transverse end of the clamping cylinder 502 being the cylinder end and the inner transverse end of the clamping cylinder 502 being the cylinder rod end. A screen tube slot 503 is provided in the middle of the clamping mounting frame 501. The screen tube slot 503 is directly opposite the screen tube outlet of the conveying device 4. Slips 504 are provided on both transverse sides of the screen tube slot 503. The slips 504 are fixedly connected to the cylinder rod end of the clamping cylinder 502.

[0064] In this embodiment, the clamping surface inside the slip 504 is arc-shaped and has a spiral groove. When the screen tube comes out of the screen tube outlet of the conveying device 4, the clamping cylinder 502 drives the slip 504 to clamp the screen tube in the screen tube slot 503. The clamping component 5 is used to clamp the screen tube to complete the insertion and prevent the screen tube from sliding down and causing safety problems. At the same time, it can assist the front and rear screen tubes to be inserted.

[0065] As one specific solution in this embodiment, such as Figure 9 As shown, the drill pipe compartment 6 includes a bottom frame 601. A side plate 602 is fixedly installed on each of the two horizontal sides of the bottom frame 601, and the side plates 602 are arranged vertically. A pair of door panels 603 are fixedly installed on each of the two longitudinal sides of the bottom frame 601, and the door panels 603 are arranged vertically, with a gap between the two door panels 603 on the same side. A top frame 604 is fixedly installed on the top of the side plates 602 and the door panels 603. In this embodiment, the drill pipe compartment 6 is used to store drill pipes, and the gap between the two door panels 603 is used for the entry and exit of drill pipes.

[0066] As one specific solution in this embodiment, such as Figure 9 As shown, the screen tube compartment 7 includes a screen tube frame 701. Multiple screen tube upper supports 702 are provided on the top edge of the screen tube frame 701. Each screen tube upper support 702 has a U-shaped groove, and the upper supports 702 are secured to the screen tube frame 701 via the U-shaped groove. The position of the screen tube axis is adjusted by adjusting the screws in the U-shaped groove, ensuring that the spatial coordinates of the screen tube are consistent with the drill rod, facilitating gripping by the robotic arm. In this embodiment, the screen tube frame 701 is connected to the drill rod compartment 6 via a pin. A pull ring is fixedly provided on the pin, allowing for easy removal of the pin, thus facilitating the disassembly and installation of the screen tube compartment 7. To increase the capacity of the screen tube compartment, multiple layers of screen tube compartments 7 can be installed stacked.

[0067] As one specific solution in this embodiment, such as Figure 10As shown, the device also includes a screen tube quick-assembly gripper 8, which can move above the screen tube compartment 7. The screen tube quick-assembly gripper 8 includes a gripper body 801, with multiple gripper plates 802 arranged in pairs at the bottom end of the gripper body 801. The inner side of the gripper plates 802 is an arc surface that matches the shape of the screen tube. The gripper plates 802 are connected to the gripper body 801 by spring pins 803. In this embodiment, the screen tube quick-assembly gripper 8 is mounted on a lever-type robotic arm. The lever-type robotic arm adopts a conventional robotic arm known in the prior art, and the movement of the screen tube quick-assembly gripper 8 is achieved by controlling the robotic arm. The structure of the gripper body 801 adopts the structure of a conventional robotic arm gripper known in the prior art. The gripper plates 802 are fixed by spring pins 803, and efficient disassembly and assembly can be achieved by pulling the spring pins 803.

[0068] As a specific embodiment, a control system is used to control the coal mine plug-in screen pipe lowering equipment. The control system includes an electromagnetic reversing valve that controls the movement of the screen pipe lowering swing cylinder 102, the conveying swing cylinder 411, the push rod cylinder 106, the drill clamp 11, and a controller, etc. The control logic is as follows: Figure 11 As shown. After the drilling rig finishes lifting the drill bit, the screen pipe compartment 7 is quickly installed on the drill rod compartment 6, and the screen pipe quick-install gripper 8 is quickly installed on the gripper of the rod-adding robotic arm. The centering component 2 is quickly installed on the drilling rig unlatcher 12, and the tilt angle of the limit switch component 3 is adjusted. The controller sends a signal, the screen pipe lowering device 1 rotates from the standby position to the working position, the conveying device 4 rotates from the standby position to the working position, the gripping robotic arm grabs the screen pipe from the screen pipe compartment 7 and transports it to the screen pipe lowering device 1, the limit switch component 3 detects that the screen pipe is in place, the push rod cylinder 106 actuates to push the screen pipe into the centering component 2 to complete the insertion of the screen pipe into the hole, the clamping component 5 opens, the conveying component actuates to lower the screen pipe into the hole, when the new screen pipe female head passes the limit switch 308, the limit switch 308 sends a feedback signal, the clamping component 5 actuates and clamps the screen pipe, waiting for the new screen pipe to arrive.

[0069] Example 2:

[0070] This embodiment provides a drilling rig with a plug-in screen pipe lowering device for coal mines, as described in Embodiment 1. Figure 1 and Figure 2 As shown, the device includes a tracked vehicle body (not shown in the figure), on which a feed body 9 is mounted. On one side of the feed body 9, from back to front, a drill power head 10, a screen pipe lowering device 1, a drill rig holder 11, a drill rig unlatcher 12, and a conveying device 4 are mounted sequentially. A limit switch assembly 3 is mounted on the drill rig holder 11, and an alignment assembly 2 is mounted on the drill rig unlatcher 12. A drill rod chamber 6 is mounted on the other side of the feed body 9.

[0071] As a specific solution in this embodiment, a drilling rig angle adjustment device 13 is also installed on the feed body 9. In this embodiment, the drilling rig angle adjustment device 13 adopts a drilling rig angle adjustment device known in the prior art. The device mainly includes an angle adjustment cylinder and a column for installing the angle adjustment cylinder. The tilt angle of the feed body 9 is adjusted by controlling the angle adjustment cylinder.

[0072] like Figure 12 As shown, the process of fully automated screen pipe lowering construction using the equipment of this utility model is as follows:

[0073] (A) After the drilling is completed, quickly adjust the screen tube chamber 7, screen tube quick-installation gripper 8, centering component 2, and limit switch component 3 into position, and adjust the screen tube lowering device 1 and conveying device 4 from the standby position to the working position.

[0074] (B) The gripping robotic arm grabs the screen tube 14 from the screen tube bin 7 and transfers it to the screen tube lowering device 1. The screen tube 14 is limited by the pipe clamp 108 of the screen tube lowering device 1 to prevent the newly added screen tube 14 from sliding. At this time, the limit switch 308 detects that the newly added screen tube 14 has entered the push position.

[0075] (C) The gripping robotic arm returns to the screen tube compartment 7 and grips the screen tube 14 again. The push rod cylinder 106 of the screen tube lowering device 1 is activated, driving the screen tube push plate 107 to push the screen tube 14 to the centering component 2 and complete the insertion of the screen tube 14 in the hole. Then the push rod cylinder 106 is reset.

[0076] (D) The clamping component 5 opens, and the conveying component moves to insert the screen tube into the hole. When the end of the screen tube passes the limit switch component 3, the limit switch 308 sends a feedback signal, the clamping component 5 clamps the screen tube, and the conveying component stops moving.

[0077] (E) Repeat the process from (B) to (D) above until the test tube is lowered to the bottom of the borehole 15.

Claims

1. A plug-in screen lowering device for coal mines, characterized in that, The device includes a screen tube lowering device (1); a centering component (2) is provided in front of the screen tube lowering device (1), and a limit switch component (3) is provided on one side of the screen tube lowering device (1); a conveying device (4) is provided in front of the centering component (2), and a clamping component (5) is fixedly installed on the front longitudinal side of the conveying device (4); a drill rod chamber (6) is provided on the other side of the screen tube lowering device (1), and a screen tube chamber (7) is detachably installed on the top of the drill rod chamber (6); The screen tube lowering device (1) includes a screen tube lowering swing cylinder mounting frame (101), on which the cylinder of the screen tube lowering swing cylinder (102) is fixedly mounted. The cylinder rod of the screen tube lowering swing cylinder (102) is fixedly connected to the outer lateral end of the rotating arm (103), and the inner lateral end of the rotating arm (103) is fixedly connected to the outer lateral side of the connecting plate (104). A push rod cylinder mounting bracket (105) is fixedly installed on the longitudinal rear side of the transverse inner side of the connecting plate (104). The push rod cylinder mounting bracket (105) is set on the longitudinal rear side of the connecting plate (104). The cylinder barrel of the push rod cylinder (106) is fixedly installed on the push rod cylinder mounting bracket (105). A screen tube push plate (107) is fixedly installed on the cylinder rod of the push rod cylinder (106). A pipe clamp (108) and a liner (109) are fixedly installed on the push rod cylinder mounting bracket (105) from back to front. A straightening tube mounting bracket (110) is fixedly installed on the longitudinal front side of the transverse inner side of the connecting plate (104), and a straightening tube (111) is fixedly installed on the straightening tube mounting bracket (110); the screen tube push plate (107), the tube clamp (108), the liner plate (109) and the straightening tube mounting bracket (110) are coaxially arranged.

2. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, The centering assembly (2) includes a connecting flange (201), a limiting member (202) is fixedly installed on the inner side of the connecting flange (201), and a centering pipe fitting (203) is fixedly installed on the inner side of the limiting member (202). The centering pipe fitting (203) is coaxially arranged with the screen pipe push plate (107), pipe clamp (108), liner (109) and straightening pipe mounting bracket (110).

3. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, The limit switch assembly (3) includes a limit switch mounting bracket (301). A pair of ear plates (302) are integrally provided on the top of the limit switch mounting bracket (301). Through holes are provided on the ear plates (302). A rotating shaft (303) is provided between the pair of ear plates (302) along the transverse direction. The two transverse ends of the rotating shaft (303) are respectively rotatably provided in the through holes on the two ear plates (302). An angle adjusting nut (304) is installed on the two transverse ends of the rotating shaft (303). The angle adjusting nut (304) is located on the outside of the ear plate (302). The rotating shaft (303) is provided with multiple position adjustment holes (305), which are arranged at equal intervals along the transverse direction. A limit switch mounting plate (307) is detachably installed on the rotating shaft (303) by a position adjustment bolt (306), and a limit switch (308) is fixedly installed on the limit switch mounting plate (307).

4. The plug-in screen lowering device for coal mines as described in claim 3, characterized in that, The limit switch mounting plate (307) is fixedly mounted with a limit switch cover (309), and the limit switch (308) is set inside the limit switch cover (309).

5. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, The conveying device (4) includes a conveying swing cylinder mounting frame (409), a rotating frame (410) is fixedly connected to the longitudinal rear side of the conveying swing cylinder mounting frame (409), a conveying swing cylinder (411) is fixedly installed on one side of the conveying swing cylinder mounting frame (409), and the conveying swing cylinder (411) is fixedly connected to the rotating frame (410); the other side of the conveying swing cylinder mounting frame (409) is fixedly connected to the conveying box (401).

6. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, The drill pipe chamber (6) includes a bottom frame (601) of the drill pipe chamber, and a drill pipe chamber side plate (602) is fixedly installed on each of the two transverse sides of the bottom frame (601), with the drill pipe chamber side plate (602) arranged along the vertical direction; a pair of drill pipe chamber door plates (603) are fixedly installed on each of the two longitudinal sides of the bottom frame (601), with the drill pipe chamber door plates (603) arranged along the vertical direction, and there is a gap between the two drill pipe chamber door plates (603) located on the same side; a top frame (604) of the drill pipe chamber is fixedly installed on the top of the drill pipe chamber side plate (602) and the drill pipe chamber door plate (603).

7. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, The screen tube compartment (7) includes a screen tube frame (701). Multiple screen tube upper supports (702) are provided on the top edge of the screen tube frame (701). The screen tube upper supports (702) are provided with U-shaped grooves. The screen tube upper supports (702) are clamped onto the screen tube frame (701) through the U-shaped grooves.

8. The plug-in screen lowering device for coal mines as described in claim 1, characterized in that, It also includes a screen tube quick-assembly gripper (8), which can move to the top of the screen tube compartment (7); the screen tube quick-assembly gripper (8) includes a gripper body (801), and multiple gripper plates (802) are provided in the bottom end of the gripper body (801). The multiple gripper plates (802) are arranged in pairs, and the inner side of the gripper plate (802) is an arc surface that matches the shape of the screen tube.

9. The plug-in screen lowering device for coal mines as described in claim 8, characterized in that, The gripper plate (802) is connected to the gripper body (801) via a spring pin (803).

10. A drilling rig equipped with a coal mine plug-in screen lowering device as described in any one of claims 1 to 9, comprising a tracked vehicle body, on which a feed body (9) is mounted, characterized in that, The feed body (9) is equipped with a drill power head (10), a screen pipe lowering device (1), a drill holder (11), a drill unscrewer (12) and a conveying device (4) in sequence from back to front on one side of the lateral side; the drill holder (11) is equipped with a limit switch assembly (3) and the drill unscrewer (12) is equipped with an alignment assembly (2); the other side of the feed body (9) is equipped with a drill rod chamber (6).

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