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

Abstract

The invention provides plug-in type screen pipe tripping-in equipment for a coal mine and a drilling machine, the drilling machine comprises a feeding machine body mounted on a crawler vehicle body, and a drilling machine power head, a screen pipe 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 device is adopted for screen pipe full-automatic tripping-in construction, after gas extraction drilling construction is completed, screen pipe full-automatic 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] The invention belongs to the technical field of gas extraction and prevention equipment, relates to a directional drilling rig and auxiliary equipment thereof, and specifically relates to a plug-in screen pipe lowering device and a drilling rig for coal mines. Background Art

[0002] Gas disasters are the main disasters that affect the safe production of coal mines. To ensure the safe production of coal mines, gas pre-extraction must be carried out before coal seam mining to reduce the gas content of coal seams. Coal mining enterprises use underground tunnel drilling rigs to carry out gas extraction drilling construction. After the drilling reaches the designed hole depth, the drill rod in the hole is lifted out of the hole. In order to ensure the efficiency of gas extraction, the borehole needs to be protected to prevent the collapse of the hole caused by soft coal seams or high gas pressure, which blocks the gas extraction channel. At present, the main method of hole protection is to use a hole protection screen, that is, after the drilling is completed, the hole protection screen is lowered to the bottom of the hole.

[0003] Coal mining enterprises mainly use two methods to lower the hole protection screen: manual insertion and manual lowering, and manual insertion and mechanical lowering. Manual insertion and manual lowering are labor-intensive, and there is a risk of injury when lowering the screen in the through-layer hole. Manual insertion and mechanical lowering generally integrate a mechanical lowering device on the drilling rig feed device. Since the lowering device and the drilling rig power head are not coaxial, after the drill rod is pulled out to drill the hole, the drilling rig needs to be moved again or the drilling rig position needs to be adjusted to align the hole, affecting the construction efficiency. Or the lowering device is coaxial with the power head, but it needs to be manually inserted, which is labor-intensive and has safety hazards. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a plug-in screen pipe lowering device and a drilling rig for coal mines, so as to solve the technical problem in the prior art that after the gas extraction drilling construction is completed, the drilling rig needs to be moved or the drilling rig position needs to be adjusted to realign the drilling hole, resulting in a decrease in construction efficiency and safety.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A plug-in screen pipe running equipment for coal mines comprises a screen pipe running device; a centering assembly is arranged in front of the screen pipe running device, and a travel switch assembly is arranged on one lateral side of the screen pipe running device; a conveying device is arranged in front of the centering assembly, and a clamping assembly is fixedly installed on the longitudinal front side of the conveying device; a drill rod bin is arranged on the other lateral side of the screen pipe running device, and a screen pipe bin is detachably installed on the top of the drill rod bin.

[0007] The screen pipe lowering device comprises a screen pipe lowering swing cylinder mounting frame, on which a cylinder barrel of the screen pipe lowering swing cylinder is fixedly mounted, the cylinder rod of the screen pipe 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 frame is fixedly installed on the longitudinal rear side of the transverse inner side of the connecting plate, the push rod cylinder mounting frame is arranged 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 frame, a screen tube push plate is fixedly installed on the cylinder rod of the push rod cylinder, and a pipe clamp and a liner are fixedly installed on the push rod cylinder mounting frame in sequence from back to front.

[0009] A centralizing pipe mounting frame is fixedly mounted on the longitudinal front side of the lateral inner side of the connecting plate, and a centralizing pipe is fixedly mounted on the centralizing pipe mounting frame; the screen tube push plate, pipe clamp, liner plate and centralizing pipe mounting frame are coaxially arranged.

[0010] The present invention also has the following technical features:

[0011] The centering assembly comprises a connecting flange, a limiting piece is fixedly arranged on the inner side of the connecting flange, a centering pipe is fixedly arranged on the inner side of the limiting piece, and the centering pipe is coaxially arranged with the screen tube push plate, the pipe clamp, the liner and the straightening tube mounting frame.

[0012] The travel switch assembly includes a travel switch mounting frame, a pair of ear plates are integrally arranged on the top of the travel switch mounting frame, through holes are opened on the ear plates, a rotating shaft is arranged between the pair of ear plates along the transverse direction, the transverse ends of the rotating shaft are rotatably arranged in the through holes on the two ear plates, and an angle adjustment nut is respectively installed on the transverse ends of the rotating shaft, and the angle adjustment nut is located on the outer side of the ear plate; a plurality of position adjustment holes are opened on the rotating shaft, and the plurality of position adjustment holes are arranged at equal intervals along the transverse direction, a travel switch mounting plate is detachably installed on the rotating shaft through a position adjustment bolt, and a travel switch is fixedly installed on the travel switch mounting plate.

[0013] A travel switch shield is fixedly mounted on the travel switch mounting plate, and the travel switch is arranged in the travel switch shield.

[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 mounted on one lateral side of the conveying swing cylinder mounting frame, and the conveying swing cylinder is fixedly connected to the rotating frame; the other lateral side of the conveying swing cylinder mounting frame is fixedly connected to the conveying box body.

[0015] The drill rod bin comprises a bottom frame of the drill rod bin, and a drill rod bin side panel is fixedly installed on both lateral sides of the bottom frame of the drill rod bin, and the drill rod bin side panel is arranged along the vertical direction; a pair of drill rod bin door panels are fixedly installed on both longitudinal sides of the bottom frame of the drill rod bin, and the drill rod bin door panels are arranged along the vertical direction, and there is a gap between the two drill rod bin door panels on the same side; a drill rod bin top frame is fixedly installed on the top of the drill rod bin side panel and the drill rod bin door panel.

[0016] The screen tube bin comprises a screen tube frame, a plurality of screen tube upper brackets are arranged on the edge of the top of the screen tube frame, the screen tube upper brackets are provided with U-shaped grooves, and the screen tube upper brackets are clamped on the screen tube frame through the U-shaped grooves.

[0017] The plug-in screen pipe lowering equipment for coal mines also includes a screen pipe quick-loading gripper, which can be moved to the top of the screen pipe bin; the screen pipe quick-loading gripper includes a gripper body, and a plurality of gripper plates are arranged at the bottom end of the gripper body, and the plurality of gripper plates are arranged in pairs, and the inner side of the gripper plate is a circular arc surface, which matches the shape of the screen pipe.

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

[0019] The present invention also protects a drilling rig with a plug-in screen pipe lowering device for coal mines as described above, comprising a crawler body, on which a feeding body is installed, and is characterized in that a drilling rig power head, a screen pipe lowering device, a drilling rig clamp, a drilling rig breaker and a conveying device are installed in sequence from back to front on one lateral side of the feeding body; a travel switch assembly is installed on the drilling rig clamp, and a centering assembly is installed on the drilling rig breaker; and a drill rod magazine is installed on the other lateral side of the feeding body.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] The plug-in screen pipe quick installation fully automatic lowering device and construction method for coal mines of the present invention are suitable for the lowering construction of screen pipes for gas extraction drilling holes in coal mines. The screen pipe bin can be quickly installed on the drill rod bin. The arrangement pattern of the screen pipes in the screen pipe bin is consistent with that of the drill rod. The screen pipes in the screen pipe bin can be transported to the position to be lowered by using a rod-adding mechanical arm. The screen pipes and the drill rod share a set of rod-adding mechanical arms, which improves the utilization rate of components and reduces the external dimensions of the equipment. When the screen pipe lowering device is on standby, it is arranged on the side of the drilling rig feeding device and does not affect the drilling construction of the drilling rig. When the screen pipe is lowered, it rotates to the working position, that is, the coaxial position of the main shaft of the drilling rig power head, to ensure that the lowering of the screen pipe is coaxial with the drilling hole, without moving the drilling rig or adjusting the drilling rig posture to realign the drilling hole, thereby improving construction efficiency. Both the centering component and the travel switch component adopt a quick installation design, which can be quickly installed on the clamp without affecting the construction of the drilling rig, thereby improving construction efficiency. The conveying device is arranged at the front end of the feeding device, and is combined with the screen pipe lowering device to realize the full-automatic lowering of the screen pipe into the borehole. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a schematic diagram of the overall structure of the plug-in screen pipe running equipment for coal mines.

[0024] Figure 3 It is a structural schematic diagram of the screen tube running device.

[0025] Figure 4 It is a structural schematic diagram of the centering component.

[0026] Figure 5 It is a structural schematic diagram of the travel switch assembly.

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

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

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

[0030] Fig. 9 It is a schematic diagram of the structure of the drill pipe compartment and the screen tube compartment.

[0031] Fig.10 It is a schematic diagram of the structure of the screen tube quick-install gripper.

[0032] Fig.11 It is a control logic diagram.

[0033] Fig.12 A schematic diagram of the process of fully automatic lowering of a screen pipe using the equipment of the present invention; Fig.12 In the figure, (A), (B), (C), and (D) show the different stages of the fully automatic lowering of the screen pipe.

[0034] The meanings of the numbers in the figure are: 1-screen tube lowering device, 2-centering assembly, 3-travel switch assembly, 4-conveying device, 5-clamping assembly, 6-drill pipe compartment, 7-screen tube compartment, 8-screen tube quick-release gripper, 9-feeding body, 10-drilling rig power head, 11-drilling rig clamp, 12-drilling rig shackle, 13-drilling rig angle adjustment device, 14-screen tube, 15-drilling.

[0035] 101-screen tube lowering into the swing cylinder mounting frame, 102-screen tube lowering into the swing cylinder, 103-rotating arm, 104-connecting plate, 105-push rod oil cylinder mounting frame, 106-push rod oil cylinder, 107-screen tube push plate, 108-pipe clamp, 109-lining plate, 110-rightening tube mounting frame, 111-rightening tube.

[0036] 201-connecting flange, 202-limiting piece, 203-centering fitting.

[0037] 301-travel switch mounting frame, 302-ear plate, 303-rotating shaft, 304-angle adjustment nut, 305-position adjustment hole, 306-position adjustment bolt, 307-travel switch mounting plate, 308-travel switch, 309-travel switch shield.

[0038] 401-conveying box, 402-conveying cycloidal motor, 403-sprocket, 404-driving wheel, 405-limiting wheel, 406-conveying channel, 407-reset spring, 408-reset cylinder, 409-conveying swing cylinder mounting frame, 410-rotating frame, 411-conveying swing cylinder.

[0039] 501-clamping mounting frame, 502-clamping cylinder, 503-screen pipe slot, 504-slip.

[0040] 601-drill rod bin bottom frame, 602-drill rod bin side plate, 603-drill rod bin door plate, 604-drill rod bin top frame.

[0041] 701-screen tube rack, 702-screen tube upper bracket.

[0042] 801-hand claw body, 802-grip plate, 803-spring pin.

[0043] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0044] It should be noted that all components in the present invention, unless otherwise specified, are components known in the art. For example, the drill clamp 11 is a drill clamp known in the prior art; the drill breaker 12 is a drill breaker known in the prior art.

[0045] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0046] Embodiment 1:

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

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

[0049] In this embodiment, the screen tube lowering swing cylinder mounting frame 101 is fixedly connected to the feeding 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 frame 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, so that it can be switched between the standby position and the working position.

[0050] In this embodiment, the connecting plate 104 is fixedly connected to the rotating arm 103 by bolts, the push rod cylinder mounting frame 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 frame 105 by bolts, the screen tube push plate 107 is fixed to the cylinder rod of the push rod cylinder 106 with nuts, and 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 frame 105, pushes the screen tube into the centering assembly and completes 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 frame 105 by bolts. The liner 109 is used to support the screen pipe to ensure the coaxiality of the newly added screen pipe with the screen pipe in the hole; the pipe clamp 108 is used to fix the newly added screen pipe to prevent the newly added screen pipe from sliding up and down when penetrating the layer hole, and also to ensure the coaxiality of the newly added screen pipe with the screen pipe in the hole.

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

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

[0054] In this embodiment, the connecting flange 201 is fixedly installed on the drilling rig breaker 12 by bolts, and the limiter 202 and the centering pipe 203 are integrated by welding, and the two together constitute a centering assembly weldment; a plurality of groups of pin holes are provided on the limiter 202, and pin shafts are installed in the pin holes. The limiter 202 and the connecting flange 201 are connected through the pin holes 503 and the pin shafts to limit the axial position of the centering assembly weldment, and the centering assembly weldment and the connecting flange 201 are coaxial and connected through a slot to limit the circumferential movement of the centering assembly weldment.

[0055] As a specific solution of this embodiment, Figure 5 As shown, the travel switch assembly 3 includes a travel switch mounting frame 301, a pair of ear plates 302 are integrally provided on the top of the travel switch mounting frame 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 lateral direction, the lateral ends of the rotating shaft 303 are rotatably provided in the through holes on the two ear plates 302, an angle adjustment nut 304 is respectively installed on the lateral ends of the rotating shaft 303, and the angle adjustment nut 304 is located on the outer side of the ear plates 302; a plurality of position adjustment holes 305 are provided on the rotating shaft 303, and the plurality of position adjustment holes 305 are arranged at equal intervals along the lateral direction, a travel switch mounting plate 307 is detachably installed on the rotating shaft 303 through a position adjustment bolt 306, and a travel switch 308 is fixedly installed on the travel switch mounting plate 307.

[0056] In this embodiment, the travel switch mounting frame 301 is fixedly connected to the drill clamp 11 by bolts, the travel switch 308 is fixedly connected to the travel switch mounting plate 307 by bolts, the rotating shaft 303 is installed on the travel switch mounting frame, the travel switch mounting plate 307 is arranged on the rotating shaft 303 and can move along the axial direction of the rotating shaft, and its position is fixed by the position adjustment hole 305 and the position adjustment bolt 306, so as to adjust the position of the travel switch 308, and the inclination angle of the travel switch 308 is adjusted by the angle adjustment nut 304.

[0057] In this embodiment, the travel switch 308 is used to detect whether the rod adding mechanical arm has transported the newly added screen tube to the position to be pushed, and can also detect whether the female head of the newly added screen tube has reached the plug-in position.

[0058] As a specific solution of this embodiment, Figure 5 As shown, a travel switch shield 309 is fixedly mounted on the travel switch mounting plate 307, and the travel switch 308 is arranged in the travel switch shield 309. In this embodiment, the travel switch shield 309 is fixedly connected to the travel switch mounting plate 307 by bolts, and the travel switch shield 309 and the travel switch mounting plate 307 protect the travel switch 308 from damage.

[0059] As a specific solution of this embodiment, 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 lateral 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 lateral 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 frame 409 is fixedly connected to the feeding body 9 by bolts, the conveying swing cylinder 411 is fixedly connected to the conveying swing cylinder mounting frame 409 and the rotating frame 410 by bolts, the conveying swing cylinder mounting frame 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 drive the clamping assembly 5 and the conveying device 4 to move between the standby position and the working position.

[0061] As a specific solution of this embodiment, Figure 7 and Figure 8As shown, a conveying device screen pipe inlet is provided on the longitudinal rear side of the conveying box 401, and a conveying device screen pipe outlet is provided on the longitudinal front side of the conveying box 401; a conveying cycloid motor 402 is fixedly installed in the top of the conveying box 401, and the conveying cycloid motor 402 is arranged in the transverse direction, and a sprocket 403 is rotatably installed on the motor shaft of the conveying cycloid motor 402; a pair of driving wheels 404 are rotatably installed in the conveying box 401 below the conveying cycloid motor 402, and a sprocket 403 is installed on the central axis of the driving wheel 404, and the sprocket 403 is installed on the central axis of the sprocket 403. 3 is connected to the conveying cycloid motor 402 through a chain; a limiting wheel 405 is arranged below the driving wheel 404, and the lateral sides of the driving wheel 404 and the limiting wheel 405 are in close contact, and the gap between the middle of the driving wheel 404 and the limiting wheel 405 is a conveying channel 406, and the screen pipe can pass through the conveying channel 406; the bottom ends of two pairs of reset springs 407 are fixedly installed on the bottom surface of the conveying box body 401, and the top ends of the reset springs 407 are connected to the central axis of the limiting wheel 405, and a reset cylinder 408 is arranged above the central axis of the limiting wheel 405.

[0062] In this embodiment, the conveying cycloid motor 402, the sprocket 403, the driving wheel 404, the limiting wheel 405, the reset spring 407 and the reset cylinder 408 together constitute a conveying assembly, which is used to lower the newly added screen pipe into the hole. The conveying cycloid motor 402 provides transmission power for the conveying device, drives the sprocket 403 to rotate, and the chain drive between the sprocket 403 and the driving wheel 404 drives the driving wheel 404 to rotate. The rotating shaft of the limiting wheel 405 is set inside, and when the reset cylinder 408 and the reset spring 407 are extended and retracted, the limiting wheel 405 will move up and down. In normal state, the reset spring 407 presses the limiting wheel 405 to make it contact with the driving wheel 404, preventing the screen pipe between the driving wheel 404 and the limiting wheel 405 from suddenly sliding down and causing a safety accident. When the conveying device starts to lower the screen pipe into the hole, the piston rod of the reset cylinder 408 extends to drive the limiting wheel 405 to move downward and disengage from the driving wheel 404, ensuring that the screen pipe can pass through the conveying channel 406 between the driving wheel 404 and the limiting wheel 405. After the end of the screen pipe extends out of the conveying channel 406, the piston rod of the reset cylinder 408 retracts, and the reset spring 407 presses the limiting wheel 405 tightly against the surface of the screen pipe. The conveying cycloid motor 402 drives the driving wheel 404 to rotate, and the screen pipe is lowered into the hole under the action of friction.

[0063] As a specific solution of this embodiment, 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 lateral sides of the clamping mounting frame 501, and the clamping cylinder 502 is arranged in the lateral direction, and the lateral outer end of the clamping cylinder 502 is the cylinder end, and the lateral inner end of the clamping cylinder 502 is the cylinder rod end; a screen pipe slot 503 is provided in the middle of the clamping mounting frame 501, and the screen pipe slot 503 is directly opposite to the conveying device screen pipe outlet of the conveying device 4, and slips 504 are provided on the lateral sides of the screen pipe slot 503, and the slips 504 are fixedly connected to the cylinder rod end of the clamping cylinder 502.

[0064] In this embodiment, the clamping surface on the inner side of the slip 504 is arc-shaped and engraved with a spiral groove. When the screen pipe comes out of the conveying device screen pipe outlet of the conveying device 4, the clamping cylinder 502 drives the slip 504 to clamp the screen pipe in the screen pipe clamping groove 503. The clamping assembly 5 is used to clamp the screen pipe through the above process to complete the plug-in and prevent the screen pipe from running down and causing safety problems. At the same time, it can assist the front and rear screen pipes to be plugged in.

[0065] As a specific solution of this embodiment, Fig. 9 As shown, the drill rod bin 6 includes a drill rod bin bottom frame 601, and a drill rod bin side plate 602 is fixedly installed on both lateral sides of the drill rod bin bottom frame 601, and the drill rod bin side plate 602 is arranged along the vertical direction; a pair of drill rod bin door plates 603 are fixedly installed on both longitudinal sides of the drill rod bin bottom frame 601, and the drill rod bin door plates 603 are arranged along the vertical direction, and there is a gap between the two drill rod bin door plates 603 on the same side; and a drill rod bin top frame 604 is fixedly installed on the top of the drill rod bin side plate 602 and the drill rod bin door plate 603. In this embodiment, the drill rod bin 6 is used to store drill rods, and the gap between the two drill rod bin door plates 603 is used for the drill rods to enter and exit.

[0066] As a specific solution of this embodiment, Fig. 9 As shown, the screen tube bin 7 includes a screen tube frame 701, and a plurality of screen tube upper brackets 702 are provided at the edge of the top of the screen tube frame 701. The screen tube upper bracket 702 is provided with a U-shaped groove. The screen tube upper bracket 702 is clamped on the screen tube frame 701 through the U-shaped groove. The position of the screen tube axis is adjusted by adjusting the screws in the U-shaped groove so that the spatial coordinates of the screen tube are consistent with the drill rod, which is convenient for the grabbing arm to grab. In this embodiment, the screen tube frame 701 is connected to the drill rod bin 6 through a pin shaft, and a pull ring is fixedly provided on the pin shaft. The pull ring facilitates the pulling out of the pin shaft, thereby facilitating the disassembly and installation of the screen tube bin 7; in order to increase the capacity of the screen tube bin, multiple layers of screen tube bins 7 can be provided and installed in a stacked manner.

[0067] As a specific solution of this embodiment, Fig.10As shown, the device also includes a screen tube quick-loading gripper 8, which can be moved to the top of the screen tube bin 7; the screen tube quick-loading gripper 8 includes a gripper body 801, and a plurality of gripper plates 802 are arranged at the bottom end of the gripper body 801, and the plurality of gripper plates 802 are arranged in pairs, and the inner side of the gripper plate 802 is an arc surface, which matches the shape of the screen tube; the gripper plate 802 is connected to the gripper body 801 through a spring pin 803; in this embodiment, the screen tube quick-loading gripper 8 is installed on a rod-adding mechanical arm, and the rod-adding mechanical arm adopts a conventional mechanical arm known in the prior art, and the movement of the screen tube quick-loading gripper 8 is achieved by controlling the mechanical arm. The structure of the gripper body 801 adopts the structure of a conventional mechanical arm gripper known in the prior art, and the gripper plate 802 is fixed by a spring pin 803, and the spring pin 803 can be pulled to achieve efficient disassembly and assembly.

[0068] As a specific solution of this embodiment, a control system is used to control the plug-in screen pipe lowering equipment for coal mines; the control system includes an electromagnetic reversing valve and a controller for controlling the lowering of the screen pipe, a swing cylinder 102, a conveying swing cylinder 411, a push rod cylinder 106, and a drilling rig clamp 11. The control logic is as follows Fig.11 As shown. When the drilling rig has finished lifting the drill, the screen tube bin 7 is quickly installed on the drill rod bin 6, and the screen tube quick-install gripper 8 is quickly installed on the gripper of the rod adding mechanical arm. The centering component 2 is quickly installed on the drilling rig breaker 12, and the inclination adjustment of the travel switch component 3 is completed. The controller sends a signal, the screen tube 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 grabbing rod mechanical arm grabs the screen tube from the screen tube bin 7 and transports it to the screen tube lowering device 1, the travel switch component 3 detects that the screen tube is in place, the push rod cylinder 106 is actuated to push the screen tube into the centering component 2 to complete the plugging with the screen tube in the hole, the clamping component 5 is opened, and the conveying component is actuated to lower the screen tube into the hole. When the newly added screen tube female head passes through the travel switch 308, the travel switch 308 feedbacks a signal, the clamping component 5 is actuated and clamps the screen tube, waiting for a new screen tube to be in place.

[0069] Embodiment 2:

[0070] This embodiment provides a drilling rig with a plug-in screen pipe lowering device for coal mines according to the first embodiment. Figure 1 and Figure 2 As shown, it includes a crawler body (not shown in the figure), a feeding body 9 is installed on the crawler body, and a drilling rig power head 10, a screen pipe running device 1, a drilling rig clamp 11, a drilling rig breaker 12 and a conveying device 4 are installed in sequence from back to front on one lateral side of the feeding body 9; a travel switch assembly 3 is installed on the drilling rig clamp 11, and a centering assembly 2 is installed on the drilling rig breaker 12; a drill rod magazine 6 is installed on the other lateral side of the feeding body 9.

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

[0072] like Fig.12 As shown, the process of using the equipment of the present invention to carry out the fully automatic lowering of the screen pipe is as follows:

[0073] (A) After the drill is lifted, the screen tube bin 7, the screen tube quick-install gripper 8, the centering assembly 2, and the travel switch assembly 3 are quickly adjusted into place, and the screen tube lowering device 1 and the conveying device 4 are adjusted from the standby position to the working position.

[0074] (B) The grabbing arm grabs the screen tube 14 from the screen tube bin 7 and transfers it to the screen tube lowering device 1. The tube clamp 108 of the screen tube lowering device 1 limits the screen tube 14 to prevent the newly added screen tube 14 from sliding. At this time, the travel switch 308 detects that the newly added screen tube 14 has entered the waiting position.

[0075] (C) The grabbing arm returns to the screen tube bin 7 to grab the screen tube 14 again, and the push rod cylinder 106 of the screen tube lowering device 1 is actuated to drive the screen tube push plate 107 to push the screen tube 14 to the centering assembly 2 and connect it with the screen tube 14 in the hole, and then the push rod cylinder 106 is reset.

[0076] (D) The clamping assembly 5 opens, and the conveying assembly moves to lower the plugged screen pipe into the hole. When the end of the plugged screen pipe passes through the travel switch assembly 3, the travel switch 308 feedbacks a signal, the clamping assembly 5 clamps the screen pipe, and the conveying assembly stops moving.

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

Claims

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

2. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The centering assembly (2) comprises a connecting flange (201), a limiting member (202) is fixedly arranged on the inner side of the connecting flange (201), a centering pipe (203) is fixedly arranged on the inner side of the limiting member (202), and the centering pipe (203) is coaxially arranged with the screen tube push plate (107), the pipe clamp (108), the liner (109) and the centralizing pipe mounting frame (110).

3. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The travel switch assembly (3) comprises a travel switch mounting frame (301), a pair of ear plates (302) are integrally arranged on the top of the travel switch mounting frame (301), through holes are opened on the ear plates (302), a rotating shaft (303) is arranged between the pair of ear plates (302) along the transverse direction, the transverse ends of the rotating shaft (303) are respectively rotatably arranged in the through holes on the two ear plates (302), and an angle adjustment nut (304) is respectively installed on the transverse ends of the rotating shaft (303), and the angle adjustment nut (304) is located on the outer side of the ear plates (302); The rotating shaft (303) is provided with a plurality of position adjustment holes (305), which are arranged at equal intervals along the transverse direction. A travel switch mounting plate (307) is detachably mounted on the rotating shaft (303) via a position adjustment bolt (306), and a travel switch (308) is fixedly mounted on the travel switch mounting plate (307).

4. The plug-in screen pipe lowering device for coal mine according to claim 3, characterized in that: A travel switch protective cover (309) is fixedly mounted on the travel switch mounting plate (307), and the travel switch (308) is arranged in the travel switch protective cover (309).

5. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The conveying device (4) comprises 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 mounted on one lateral side of the conveying swing cylinder mounting frame (409), and the conveying swing cylinder (411) is fixedly connected to the rotating frame (410); and the other lateral side of the conveying swing cylinder mounting frame (409) is fixedly connected to the conveying box (401).

6. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The drill rod bin (6) comprises a drill rod bin bottom frame (601), and a drill rod bin side plate (602) is fixedly installed on both lateral sides of the drill rod bin bottom frame (601), and the drill rod bin side plates (602) are arranged along the vertical direction; a pair of drill rod bin door plates (603) are fixedly installed on both longitudinal sides of the drill rod bin bottom frame (601), and the drill rod bin door plates (603) are arranged along the vertical direction, and a gap is provided between the two drill rod bin door plates (603) located on the same side; and a drill rod bin top frame (604) is fixedly installed on the top ends of the drill rod bin side plates (602) and the drill rod bin door plates (603).

7. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The screen tube bin (7) comprises a screen tube frame (701), a plurality of screen tube upper supports (702) are arranged at the edge of the top of the screen tube frame (701), the screen tube upper supports (702) are provided with U-shaped grooves, and the screen tube upper supports (702) are mounted on the screen tube frame (701) through the U-shaped grooves.

8. The plug-in screen pipe lowering device for coal mine according to claim 1, characterized in that: The invention also comprises a sieve tube quick-loading gripper (8), which can be moved to the top of the sieve tube bin (7); the sieve tube quick-loading gripper (8) comprises a gripper body (801), a plurality of gripper plates (802) are arranged at the bottom end of the gripper body (801), the plurality of gripper plates (802) are arranged in pairs, and the inner side of the gripper plate (802) is an arc surface, which matches the shape of the sieve tube.

9. The plug-in screen pipe lowering device for coal mine according to 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 with a plug-in screen pipe lowering device for coal mines as claimed in any one of claims 1 to 9, comprising a crawler body, a feeding body (9) being mounted on the crawler body, characterized in that: A drilling rig power head (10), a screen tube lowering device (1), a drilling rig clamp (11), a drilling rig breaker (12) and a conveying device (4) are installed in sequence from the back to the front on one lateral side of the feed body (9); a travel switch assembly (3) is installed on the drilling rig clamp (11), and a centering assembly (2) is installed on the drilling rig breaker (12); and a drill rod magazine (6) is installed on the other lateral side of the feed body (9).

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