A device and method for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels

Abstract

The present invention provides a device and method for preventing and controlling coal-rock dynamic disasters in a coal mine excavation tunnel, and relates to the technical field of coal mining, comprising a support unit; the mounting unit is mounted on the top of the support unit; the disaster prevention unit is mounted on the mounting unit; the auxiliary unit is mounted on the disaster prevention unit; the gas detection unit is mounted on the top of the disaster prevention unit; the coal and rock in the circular drill barrel of the present invention rotate simultaneously with eight separation plugs, thereby realizing automatic fracture of the coal and rock at the circular drill bit; the sealing bracket seals the four exhaust circular holes, which is conducive to the coal and rock in the circular drill barrel being removed simultaneously with the circular drill barrel; the problem that when the drill bit is taken out, the coal and rock at the drill head end cannot be ensured to be in a fractured state, resulting in that the coal and rock near the drill head end cannot be completely taken out, and when the drill bit is taken out, it cannot be ensured that the inside of the drill bit is always basically in a vacuum state, resulting in that part of the coal and rock inside the drill bit will be separated from the drill bit when the drill bit moves.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mining, and more specifically, particularly relates to a device and method for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels. Background Art

[0002] In coal mine excavation tunnels, the main purpose of coal rock drilling decompression is to reduce gas pressure and ground stress to ensure the safety of workers; common decompression methods include: drilling decompression, tunnel decompression, hydraulic cutting decompression and pre-splitting blasting decompression; among them, drilling decompression is one of the most commonly used methods to prevent coal rock dynamic disasters.

[0003] The drilling pressure relief equipment currently used still has the following problems:

[0004] 1. When drilling, the drill bit will move with the vehicle body. When the bottom plate of the coal mine tunnel is uneven, the vehicle body will drive the drill bit to move up and down, reducing the drilling accuracy;

[0005] 2. When the drill bit is taken out, it cannot be guaranteed that the coal rock at the end of the drill bit is in a broken state, resulting in that the coal rock near the end of the drill bit cannot be completely taken out. When the drill bit is taken out, it cannot be guaranteed that the inside of the drill bit is always in a basically vacuum state, resulting in that when the drill bit moves, part of the coal rock inside the drill bit will be separated from the drill bit;

[0006] 3. Although some drilling pressure relief equipment is equipped with gas detectors, the gas at the gas detectors basically does not flow during drilling, which reduces the accuracy of gas detection. Summary of the invention

[0007] The disclosed embodiments relate to a device and method for preventing and controlling coal-rock dynamic disasters in coal mine tunnels, which comprises a supporting unit, an installation unit, a disaster prevention unit, an auxiliary unit and a gas detection unit. When the disaster prevention unit is drilling, the movable installation frame is always moved in a straight line, thereby improving the drilling accuracy. The coal and rock in the circular drill barrel rotate simultaneously with eight separation plugs, thereby realizing the automatic fracture of the coal and rock at the circular drill bit. The sealing bracket seals the four exhaust circular holes, which is conducive to the coal and rock in the circular drill barrel being removed simultaneously with the circular drill barrel. The gas can automatically enter the circular suction cylinder and contact the gas detector, thereby facilitating the real-time monitoring of the gas concentration during drilling. The problem that the vehicle body drives the drill bit to move up and down, the coal and rock at the drill bit end cannot be ensured to be in a fractured state, and the gas detection accuracy is poor is solved.

[0008] In a first aspect, the present disclosure provides a device for preventing and controlling coal-rock dynamic disasters in a coal mine tunnel, comprising: a support unit, a mounting unit, a disaster prevention unit, an auxiliary unit, and a gas detection unit; the mounting unit is mounted on the top of the support unit; the disaster prevention unit is mounted on the mounting unit; the auxiliary unit is mounted on the disaster prevention unit; the gas detection unit is mounted on the top of the disaster prevention unit;

[0009] The support unit comprises: a trolley, a circular guide rod and a movable support seat; the circular guide rods are provided with two in total, and the two circular guide rods are fixedly installed on the left side of the trolley; the movable support seat is slidably installed on the top of the trolley;

[0010] The mounting unit includes: a circular guide shaft, a movable mounting frame, a circular mounting rod, a T-shaped drive block and a support spring A; there are four circular guide shafts in total, and the four circular guide shafts are fixedly mounted on the top of the movable support seat; the movable mounting frame is slidably mounted on the outside of the four circular guide shafts; there are two circular mounting rods in total, and the two circular mounting rods are fixedly mounted on the movable mounting frame; there are two T-shaped drive blocks in total, and the two T-shaped drive blocks are slidably mounted on the outside of the two circular mounting rods, and the two circular guide rods are inserted into the two T-shaped drive blocks; there are two support springs A in total, and the two support springs A are mounted on the outside of the two circular mounting rods, and the two support springs A are located below the two T-shaped drive blocks.

[0011] In at least some embodiments, the support unit also includes: a drive motor A and a drive screw A; the drive motor A is installed on the right side of the trolley by screws; the drive screw A is fixedly installed on the output shaft of the drive motor A, and the drive screw A is also threadedly connected to the movable support seat.

[0012] In at least some embodiments, the mounting unit further includes: a driving motor B and a driving screw rod B; there are two driving motors B in total, and the two driving motors B are fixedly mounted on the top of the movable support seat; there are two driving screw rods B in total, and the two driving screw rods B are fixedly mounted on the output shafts of the two driving motors B, and the two driving screw rods B are also threadedly connected to the two T-shaped driving blocks.

[0013] In at least some embodiments, the disaster prevention unit includes: a drive motor C and a circular drill barrel; the drive motor C is mounted on the top of the movable mounting frame by screws; the circular drill barrel is mounted on the output shaft of the drive motor C by bolts, and four exhaust circular holes are opened at the right end of the circular drill barrel.

[0014] In at least some embodiments, the disaster prevention unit further includes: a circular drill bit, a connecting gear A and a separation plug; the circular drill bit is fixedly mounted on the left side of the circular drill barrel; the connecting gear A is fixedly mounted on the outside of the circular drill barrel; there are eight separation plugs in total, and the eight separation plugs are slidably mounted inside the circular drill barrel; the outer ends of the eight separation plugs are provided with rounded corners, and the inner ends of the eight separation plugs are provided with chamfers, and the inner ends of the eight separation plugs are flush with the inner wall of the circular drill barrel.

[0015] In at least some embodiments, the disaster prevention and control unit also includes: a force-bearing ring and a support spring B; there are eight force-bearing rings in total, and the eight force-bearing rings are fixedly installed on the outside of eight separation blocks; there are eight support springs B in total, and the eight support springs B are installed on the outside of eight separation blocks, and the eight support springs B are located on the inner side of the eight force-bearing rings.

[0016] In at least some embodiments, the auxiliary unit includes: a circular extrusion rod, a sealing bracket, a mounting plate and a linear electric cylinder; there are eight circular extrusion rods in total, and the eight circular extrusion rods are slidably installed inside the circular drill barrel; the left ends of the eight circular extrusion rods are conical structures, and the left ends of the eight circular extrusion rods are in contact with the outer ends of eight separation blocks; the sealing bracket is fixedly installed on the right side of the eight circular extrusion rods; the mounting plate is fixedly installed on the right end of the circular drill barrel; there are two linear electric cylinders in total, and the two linear electric cylinders are fixedly installed on the left side of the mounting plate, and the output shafts of the two linear electric cylinders are fixedly connected to the sealing bracket.

[0017] In at least some embodiments, the gas detection unit includes: a supporting frame, a circular suction cylinder, a gas detector and a cross-shaped frame; there are two supporting frames in total, and the two supporting frames are fixedly installed on the top of the driving motor C; the circular suction cylinder is fixedly installed on the two supporting frames, and a row of exhaust slots is opened at the bottom of the circular suction cylinder, and the row of exhaust slots is located directly above the driving motor C; the gas detector is fixedly installed inside the circular suction cylinder; there are two cross-shaped frames in total, and the two cross-shaped frames are fixedly installed inside the circular suction cylinder.

[0018] In at least some embodiments, the gas detection unit also includes: a circular connecting rod, an intake impeller and a connecting gear B; the circular connecting rod is mounted on two cross frames through two bearings; the intake impeller is fixedly mounted on the right end of the circular connecting rod; the connecting gear B is fixedly mounted on the left end of the circular connecting rod, and the connecting gear B is meshed and connected with the connecting gear A.

[0019] In at least some embodiments, the method for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels is:

[0020] 1) Level part of the floor of the coal mine tunnel, then move the trolley to the leveled area to ensure that the trolley is in a horizontal position;

[0021] 2) Use two drive motors B to properly adjust the height of the disaster prevention unit, and then reverse the drive motor A to insert the two circular guide rods into the corresponding holes on the two T-shaped drive blocks;

[0022] 3) Push the trolley to make the round drill bit contact the position to be drilled, then the staff controls the trolley to prevent it from moving and then rotates the drive motor A forward;

[0023] 4) When the drilling depth is reached, the drive motor C is turned off, and then the staff extends the output shafts of the two linear electric cylinders to insert the eight separation plugs into the coal rock at the circular drill bit, and then starts the drive motor C, and then moves the circular drill tube out with a trolley;

[0024] 5) When it is necessary to clean the coal and rock in the circular drill barrel, the staff will retract the output shafts of the two linear electric cylinders, and then lift the handle of the trolley to ensure that the disaster prevention and control unit has an inclined angle so that the coal and rock in the circular drill barrel will automatically slide out under the action of gravity.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, when the driving motor A drives the driving screw A to rotate forward, the movable support seat drives the disaster prevention unit to move to the left. The setting of the two circular guide rods guides the disaster prevention unit and prevents the disaster prevention unit from tilting during drilling. When the left side of the movable support seat is flush with the left side of the trolley, the two circular guide rods and the two T-shaped driving blocks are in a separated state; at this time, the coaxial force between the disaster prevention unit and the coal rock is greater than the elastic force of the two support springs A;

[0027] In addition, when the staff pushes the cart to the left and the bottom plate of the coal mine tunnel is uneven, the two T-shaped drive blocks can automatically move under the action of gravity and the coaxial force between the disaster prevention and control unit and the coal rock, ensuring that when the disaster prevention and control unit is drilling, the movable mounting frame always moves in a straight line, thereby improving the drilling accuracy.

[0028] 2. When the present invention reaches the drilling depth, the staff extends the output shafts of the two linear electric cylinders. At this time, the sealing bracket drives the eight circular extrusion rods to move inward at the same time, so that the eight separation plugs are inserted into the coal rock at the circular drill bit. When the driving motor C continues to work, the coal rock in the circular drill barrel rotates simultaneously with the eight separation plugs, realizing the automatic breaking of the coal rock at the circular drill bit;

[0029] In addition, when the output shafts of the two linear electric cylinders extend, the sealing bracket seals the four exhaust holes, which is conducive to the coal and rock in the circular drill tube to be removed simultaneously with the circular drill tube, realizing the pressure relief of the drilling hole, reducing the gas pressure and ground stress, and ensuring the safety of the workers. After drilling, the high-pressure gas and stress can be slowly released, which has a good disaster prevention and control effect;

[0030] In addition, when it is necessary to clean the coal and rock in the circular drill barrel, the staff will retract the output shafts of the two linear electric cylinders. At this time, the sealing bracket is separated from the four exhaust holes. Then the staff will lift the handle of the trolley to ensure that the disaster prevention and control unit has an inclination angle, so that the coal and rock in the circular drill barrel will automatically slide out under the action of gravity; when the output shafts of the two linear electric cylinders are retracted, the eight separation blocks will automatically move outward under the action of eight support springs B, which is convenient for drilling next time.

[0031] 3. In the present invention, when the circular drill tube rotates, the connecting gear A can drive the connecting gear B to rotate automatically; when the suction impeller rotates, the gas can automatically enter the circular suction tube and contact the gas detector, which is convenient for real-time monitoring of gas concentration during drilling. The gas entering the circular suction tube is then discharged through a row of exhaust slots; the detected gas can accelerate the air flow rate outside the drive motor C, which has an auxiliary heat dissipation effect on the drive motor C. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0033] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0034] In the attached picture:

[0035] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0036] Figure 2 The present invention is shown Figure 1 Schematic diagram of the left perspective structure.

[0037] Figure 3 A structural schematic diagram of the support unit of the present invention is shown.

[0038] Figure 4 A schematic structural diagram of the installation unit of the present invention is shown.

[0039] Figure 5 The present invention is shown Figure 2 Schematic diagram of the local enlarged structure of area A in the middle.

[0040] Figure 6 A schematic structural diagram of the disaster prevention and control unit of the present invention is shown.

[0041] Figure 7 The present invention is shown Figure 6 Schematic diagram of the local enlarged structure of area B in the middle.

[0042] Figure 8 The present invention is shown Figure 1 Schematic diagram of the central cut structure.

[0043] Fig. 9 The present invention is shown Figure 8 Schematic diagram of the local enlarged structure of the C area in the middle.

[0044] Fig.10 The present invention is shown Figure 8 Schematic diagram of the local enlarged structure of area D in the middle.

[0045] Fig.11 The schematic diagram of the structure of the gas detection unit of the present invention is shown.

[0046] Fig.12 The present invention is shown Figure 2 Schematic diagram of the local enlarged structure of area E in the middle.

[0047] List of reference numerals:

[0048] 100, support unit; 101, trolley; 102, circular guide rod; 103, movable support seat; 104, drive motor A; 105, drive screw A;

[0049] 200, mounting unit; 201, circular guide shaft; 202, movable mounting frame; 203, circular mounting rod; 204, T-type drive block; 205, support spring A; 206, drive motor B; 207, drive screw B;

[0050] 300, disaster prevention unit; 301, driving motor C; 302, circular drill tube; 3021, exhaust hole; 303, circular drill bit; 304, connecting gear A; 305, separation plug; 306, force ring; 307, support spring B;

[0051] 400, auxiliary unit; 401, round extrusion rod; 402, sealing bracket; 403, mounting plate; 404, linear electric cylinder;

[0052] 500, gas detection unit; 501, supporting frame; 502, circular suction cylinder; 5021, exhaust slot; 503, gas detector; 504, cross frame; 505, circular connecting rod; 506, suction impeller; 507, connecting gear B. DETAILED DESCRIPTION

[0053] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0054] Example: Please refer to Figures 1 to 12 As shown: The present invention provides a device for preventing and controlling coal-rock dynamic disasters in coal mine excavation tunnels, comprising: a support unit 100, an installation unit 200, a disaster prevention and control unit 300, an auxiliary unit 400 and a gas detection unit 500; the installation unit 200 is installed on the top of the support unit 100; the disaster prevention and control unit 300 is installed on the installation unit 200; the auxiliary unit 400 is installed on the disaster prevention and control unit 300; and the gas detection unit 500 is installed on the top of the disaster prevention and control unit 300.

[0055] In the present disclosure, Figures 3 to 5 As shown, the support unit 100 includes: a trolley 101, a circular guide rod 102 and a movable support seat 103; there are two circular guide rods 102, and the two circular guide rods 102 are fixedly installed on the left side of the trolley 101; the movable support seat 103 is slidably installed on the top of the trolley 101; the support unit 100 also includes: a driving motor A104 and a driving screw A105; the driving motor A104 is installed on the right side of the trolley 101 by screws; the driving screw A105 is fixedly installed on the output shaft of the driving motor A104, and the driving screw A105 is also threadedly connected to the movable support seat 103;

[0056] The mounting unit 200 includes: a circular guide shaft 201, a movable mounting frame 202, a circular mounting rod 203, a T-shaped driving block 204 and a supporting spring A205; there are four circular guide shafts 201, and the four circular guide shafts 201 are fixedly mounted on the top of the movable support seat 103; the movable mounting frame 202 is slidably mounted on the outside of the four circular guide shafts 201; there are two circular mounting rods 203, and the two circular mounting rods 203 are fixedly mounted on the movable mounting frame 202; there are two T-shaped driving blocks 204, and the two T-shaped driving blocks 204 are slidably mounted on the outside of the two circular mounting rods 203, and the two circular guide rods 102 are inserted into the two T-shaped drive block 204; there are two support springs A205, and the two support springs A205 are installed on the outside of the two circular mounting rods 203, and the two support springs A205 are located below the two T-shaped drive blocks 204; the mounting unit 200 also includes: a drive motor B206 and a drive screw B207; there are two drive motors B206, and the two drive motors B206 are fixedly installed on the top of the movable support seat 103; there are two drive screws B207, and the two drive screws B207 are fixedly installed on the output shafts of the two drive motors B206, and the two drive screws B207 are also threadedly connected to the two T-shaped drive blocks 204;

[0057] Its specific function is as follows: because the driving screw A105 is fixedly mounted on the output shaft of the driving motor A104, and the driving screw A105 is also threadedly connected to the movable support seat 103, when the driving motor A104 drives the driving screw A105 to rotate forward, the movable support seat 103 drives the disaster prevention unit 300 to move to the left, and the setting of the two circular guide rods 102 guides the disaster prevention unit 300, thereby preventing the disaster prevention unit 300 from tilting when drilling. When the left side of the movable support seat 103 is flush with the left side of the trolley 101, the two circular guide rods 102 and the two T-shaped driving blocks 204 are in a separated state; at this time, the disaster prevention unit 300 The coaxial force between the coal rock and the disaster prevention unit 300 is greater than the elastic force of the two support springs A205; and because the two T-shaped drive blocks 204 are slidably installed on the outside of the two circular mounting rods 203, and the two support springs A205 are installed on the outside of the two circular mounting rods 203, and the two support springs A205 are located below the two T-shaped drive blocks 204, when the staff pushes the cart 101 to the left and the bottom plate of the coal mine tunnel is uneven, the two T-shaped drive blocks 204 can automatically move under the action of gravity and the coaxial force between the disaster prevention unit 300 and the coal rock, ensuring that when the disaster prevention unit 300 is drilling, the movable mounting frame 202 always moves in a straight line, thereby improving the drilling accuracy.

[0058] In the present disclosure, Figures 6 to 10As shown, the disaster prevention unit 300 includes: a driving motor C301 and a circular drill barrel 302; the driving motor C301 is installed on the top of the movable mounting frame 202 by screws; the circular drill barrel 302 is installed on the output shaft of the driving motor C301 by bolts, and four exhaust holes 3021 are opened at the right end of the circular drill barrel 302; the disaster prevention unit 300 also includes: a circular drill bit 303, a connecting gear A304 and a separation plug 305; the circular drill bit 303 is fixedly installed on the left side of the circular drill barrel 302; the connecting gear A304 is fixedly installed on the outside of the circular drill barrel 302; there are eight separation plugs 305, and the eight separation plugs 305 Slidingly mounted inside the circular drill tube 302; the outer ends of the eight separation plugs 305 are provided with rounded corners, and the inner ends of the eight separation plugs 305 are provided with chamfers, and the inner ends of the eight separation plugs 305 are flush with the inner wall of the circular drill tube 302; the disaster prevention unit 300 also includes: a force-bearing circular ring 306 and a support spring B307; there are eight force-bearing circular rings 306, and the eight force-bearing circular rings 306 are fixedly mounted on the outside of the eight separation plugs 305; there are eight support springs B307, and the eight support springs B307 are mounted on the outside of the eight separation plugs 305, and the eight support springs B307 are located on the inner side of the eight force-bearing circular rings 306;

[0059] The auxiliary unit 400 includes: a circular extrusion rod 401, a sealing bracket 402, a mounting plate 403 and a linear electric cylinder 404; there are eight circular extrusion rods 401 in total, and the eight circular extrusion rods 401 are slidably installed inside the circular drill tube 302; the left ends of the eight circular extrusion rods 401 are conical structures, and the left ends of the eight circular extrusion rods 401 are in contact with the outer ends of eight separation plugs 305; the sealing bracket 402 is fixedly installed on the right side of the eight circular extrusion rods 401; the mounting plate 403 is fixedly installed on the right end of the circular drill tube 302; there are two linear electric cylinders 404 in total, and the two linear electric cylinders 404 are fixedly installed on the left side of the mounting plate 403, and the output shafts of the two linear electric cylinders 404 are fixedly connected to the sealing bracket 402;

[0060] Its specific function is as follows: because the eight separation plugs 305 are slidably installed inside the circular drill tube 302, and the left ends of the eight circular extrusion rods 401 are of a conical structure, and the left ends of the eight circular extrusion rods 401 are in contact with the outer ends of the eight separation plugs 305, when the drilling depth is reached, the staff extends the output shafts of the two linear electric cylinders 404. At this time, the sealing bracket 402 drives the eight circular extrusion rods 401 to move inward at the same time, so that the eight separation plugs 305 are inserted into the coal rock at the circular drill bit 303. When the driving motor C301 continues to work, the coal rock in the circular drill tube 302 rotates simultaneously with the eight separation plugs 305. The automatic fracture of the coal and rock at the circular drill bit 303 is realized; and because four exhaust holes 3021 are opened at the right end of the circular drill tube 302, when the output shafts of the two linear electric cylinders 404 are extended, the sealing bracket 402 seals the four exhaust holes 3021, so that when the circular drill tube 302 is taken out, the interior of the circular drill tube 302 is basically in a vacuum state, which is conducive to the coal and rock in the circular drill tube 302 being removed simultaneously with the circular drill tube 302, realizing the pressure relief of the drilling hole, reducing the gas pressure and ground stress, and ensuring the safety of the staff. After drilling, the high-pressure gas and stress can be slowly released, which has a good disaster prevention and control effect;

[0061] In addition, when it is necessary to clean the coal and rock in the circular drill barrel 302, the staff will retract the output shafts of the two linear electric cylinders 404. At this time, the sealing bracket 402 is separated from the four exhaust holes 3021. Then the staff will lift the handle of the trolley 101 to ensure that the disaster prevention and control unit 300 has an inclination angle, so that the coal and rock in the circular drill barrel 302 will automatically slide out under the action of gravity; and because the eight force-bearing rings 306 are fixedly installed on the outside of the eight separation blocks 305, and the eight support springs B307 are installed on the outside of the eight separation blocks 305, and the eight support springs B307 are located on the inner side of the eight force-bearing rings 306, when the output shafts of the two linear electric cylinders 404 are retracted, the eight separation blocks 305 automatically move outward under the action of the eight support springs B307, which is convenient for drilling next time.

[0062] In the present disclosure, Fig.11 and Fig.12As shown, the gas detection unit 500 includes: a support frame 501, a circular suction cylinder 502, a gas detector 503 and a cross frame 504; there are two support frames 501, and the two support frames 501 are fixedly installed on the top of the driving motor C301; the circular suction cylinder 502 is fixedly installed on the two support frames 501, and a row of exhaust slots 5021 is opened at the bottom of the circular suction cylinder 502, and the row of exhaust slots 5021 is located directly above the driving motor C301; the gas detector 503 is fixedly installed on the circular suction cylinder 5 02; there are two cross-shaped frames 504, and the two cross-shaped frames 504 are fixedly installed in the circular suction cylinder 502; the gas detection unit 500 also includes: a circular connecting rod 505, an air suction impeller 506 and a connecting gear B507; the circular connecting rod 505 is installed on the two cross-shaped frames 504 through two bearings; the air suction impeller 506 is fixedly installed at the right end of the circular connecting rod 505; the connecting gear B507 is fixedly installed at the left end of the circular connecting rod 505, and the connecting gear B507 is meshed and connected with the connecting gear A304;

[0063] Its specific function is: because the connecting gear A304 is fixedly installed on the outside of the circular drill tube 302, and the connecting gear B507 is fixedly installed on the left end of the circular connecting rod 505, and the connecting gear B507 is meshed and connected with the connecting gear A304, when the circular drill tube 302 rotates, the connecting gear A304 can drive the connecting gear B507 to rotate automatically; and because the suction impeller 506 is fixedly installed on the right end of the circular connecting rod 505, and the gas detector 503 is fixedly installed inside the circular suction cylinder 502, and the circular suction cylinder A row of exhaust slots 5021 is provided at the bottom of 502. When the suction impeller 506 rotates, the gas can automatically enter the circular suction cylinder 502 and contact the gas detector 503, so as to facilitate real-time monitoring of gas concentration during drilling. The gas entering the circular suction cylinder 502 is then discharged through the row of exhaust slots 5021. Because the row of exhaust slots 5021 is located directly above the drive motor C301, the detected gas can accelerate the air flow rate outside the drive motor C301, thereby having an auxiliary heat dissipation effect on the drive motor C301.

[0064] In the embodiment of the present disclosure, a method for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels is provided:

[0065] 1) Level a part of the bottom plate of the coal mine tunnel, and then move the trolley 101 to the leveled area to ensure that the trolley 101 is in a horizontal position;

[0066] 2) Properly adjust the height of the disaster prevention unit 300 through the two drive motors B206, and then reverse the drive motor A104 to insert the two circular guide rods 102 into the corresponding holes on the two T-shaped drive blocks 204;

[0067] 3) Push the trolley 101 to make the round drill bit 303 contact the position to be drilled, then the staff controls the trolley 101 not to move, and then drives the drive motor A104 to rotate forward;

[0068] 4) When the drilling depth is reached, the driving motor C301 is turned off, and then the staff extends the output shafts of the two linear electric cylinders 404, inserts the eight separation plugs 305 into the coal rock at the circular drill bit 303, and then starts the driving motor C301, and then moves the circular drill tube 302 out through the trolley 101;

[0069] 5) When the coal and rock in the circular drill tube 302 need to be cleaned, the staff will retract the output shafts of the two linear electric cylinders 404, and then lift the handle of the trolley 101 to ensure that the disaster prevention unit 300 has an inclined angle, so that the coal and rock in the circular drill tube 302 automatically slide out under the action of gravity.

[0070] The specific usage and function of this embodiment are as follows:

[0071] When the present invention is used, firstly, a part of the bottom plate of the coal mine tunnel is leveled, and then the trolley 101 is moved to the leveled area to ensure that the trolley 101 is in a horizontal position. Then, the staff appropriately adjusts the height of the disaster prevention and control unit 300 through the two drive motors B206, and then reverses the drive motor A104. When the drive motor A104 drives the drive screw A105 to reverse, the movable support seat 103 drives the disaster prevention and control unit 300 to move to the right, so that the two circular guide rods 102 are inserted into the corresponding holes on the two T-shaped drive blocks 204, and then the trolley 101 is pushed to make the circular drill bit 303 contact the position to be drilled, and then the staff controls The trolley 101 does not move, and the driving motor A104 is rotated forward. When the driving motor A104 drives the driving screw A105 to rotate forward, the movable support seat 103 drives the disaster prevention and control unit 300 to move to the left. The setting of the two circular guide rods 102 guides the disaster prevention and control unit 300 and prevents the disaster prevention and control unit 300 from tilting during drilling. When the left side of the movable support seat 103 is flush with the left side of the trolley 101, the two circular guide rods 102 and the two T-shaped driving blocks 204 are in a separated state; at this time, the coaxial force between the disaster prevention and control unit 300 and the coal rock is greater than the elastic force of the two supporting springs A205; then continue to push the trolley. The trolley 101 moves. When the worker pushes the trolley 101 to the left and the bottom plate of the coal mine tunnel is uneven, the two T-shaped driving blocks 204 can automatically move under the action of gravity and the coaxial force between the disaster prevention unit 300 and the coal rock, ensuring that when the disaster prevention unit 300 is drilling, the movable mounting frame 202 always moves in a straight line, thereby improving the drilling accuracy; when the circular drill tube 302 rotates, the connecting gear A304 can drive the connecting gear B507 to rotate automatically; when the suction impeller 506 rotates, the gas can automatically enter the circular suction cylinder 502 and contact the gas detector 503, which is convenient for real-time monitoring of gas concentration during drilling, and enters the circular suction cylinder 50 The gas in the circular drill tube 302 is then discharged through a row of exhaust slots 5021; the detected gas can speed up the air flow rate outside the drive motor C301, which plays an auxiliary heat dissipation effect on the drive motor C301; when the drilling depth is reached, the drive motor C301 is turned off; then the staff extends the output shafts of the two linear electric cylinders 404, at which time, the sealing bracket 402 drives the eight circular extrusion rods 401 to move inward at the same time, so that the eight separation plugs 305 are inserted into the coal rock at the circular drill bit 303, and then the drive motor C301 is started. At this time, the coal rock in the circular drill barrel 302 rotates simultaneously with the eight separation plugs 305, realizing the automatic fracture of the coal rock at the circular drill bit 303;When the output shafts of the two linear electric cylinders 404 extend out, the sealing bracket 402 seals the four exhaust holes 3021, so that when the circular drill tube 302 is taken out, the interior of the circular drill tube 302 is basically in a vacuum state, which is conducive to the coal and rock in the circular drill tube 302 being removed simultaneously with the circular drill tube 302, realizing the pressure relief of the drilling hole, reducing the gas pressure and ground stress, and ensuring the safety of the staff. After drilling, the high-pressure gas and stress can be slowly released, which has a good disaster prevention effect; then the circular drill tube 302 is taken out by the trolley 101. 02 is moved out; when the coal and rock in the circular drill tube 302 need to be cleaned, the staff will retract the output shafts of the two linear electric cylinders 404. At this time, the sealing bracket 402 is separated from the four exhaust holes 3021. Then the staff will lift the handle of the trolley 101 to ensure that the disaster prevention unit 300 has an inclined angle, so that the coal and rock in the circular drill tube 302 will automatically slide out under the action of gravity; when the output shafts of the two linear electric cylinders 404 are retracted, the eight separation plugs 305 will automatically move outward under the action of the eight support springs B307, which is convenient for the next drilling. ;

[0072] In this article, there are a few points to note:

[0073] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0074] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0075] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels, comprising: A support unit (100), a mounting unit (200), a disaster prevention unit (300), an auxiliary unit (400) and a gas detection unit (500); characterized in that the mounting unit (200) is mounted on the top of the support unit (100); the disaster prevention unit (300) is mounted on the mounting unit (200); the auxiliary unit (400) is mounted on the disaster prevention unit (300); and the gas detection unit (500) is mounted on the top of the disaster prevention unit (300); The support unit (100) comprises: a trolley (101), a circular guide rod (102) and a movable support seat (103); two circular guide rods (102) are provided, and the two circular guide rods (102) are fixedly installed on the left side of the trolley (101); the movable support seat (103) is slidably installed on the top of the trolley (101); The mounting unit (200) comprises: a circular guide shaft (201), a movable mounting frame (202), a circular mounting rod (203), a T-shaped driving block (204) and a supporting spring A (205); the circular guide shafts (201) are provided in total of four, and the four circular guide shafts (201) are fixedly mounted on the top of the movable support seat (103); the movable mounting frame (202) is slidably mounted on the outside of the four circular guide shafts (201); the circular mounting rods (203) are provided in total of two, and the two circular mounting rods (203 ) is fixedly mounted on the movable mounting frame (202); there are two T-shaped drive blocks (204) in total, and the two T-shaped drive blocks (204) are slidably mounted on the outside of the two circular mounting rods (203), and the two circular guide rods (102) are inserted into the two T-shaped drive blocks (204); there are two support springs A (205) in total, and the two support springs A (205) are mounted on the outside of the two circular mounting rods (203), and the two support springs A (205) are located below the two T-shaped drive blocks (204); The disaster prevention unit (300) comprises: a driving motor C (301) and a circular drill tube (302); the driving motor C (301) is mounted on the top of a movable mounting frame (202) by means of screws; the circular drill tube (302) is mounted on the output shaft of the driving motor C (301) by means of bolts, and four exhaust circular holes (3021) are provided at the right end of the circular drill tube (302); the disaster prevention unit (300) further comprises: a circular drill bit (303), a connecting gear A (304) and a separation plug (305); The circular drill bit (303) is fixedly mounted on the left side of the circular drill barrel (302); the connecting gear A (304) is fixedly mounted on the outside of the circular drill barrel (302); a total of eight separation plugs (305) are provided, and the eight separation plugs (305) are slidably mounted inside the circular drill barrel (302); the outer ends of the eight separation plugs (305) are provided with rounded corners, and the inner ends of the eight separation plugs (305) are provided with chamfers, and the inner ends of the eight separation plugs (305) are flush with the inner wall of the circular drill barrel (302); The auxiliary unit (400) comprises: a circular extrusion rod (401), a sealing bracket (402), a mounting plate (403) and a linear electric cylinder (404); there are eight circular extrusion rods (401) in total, and the eight circular extrusion rods (401) are slidably mounted inside the circular drill tube (302); the left ends of the eight circular extrusion rods (401) are conical structures, and the left ends of the eight circular extrusion rods (401) are in contact with the outer ends of eight separation plugs (305); the sealing bracket (402) is fixedly mounted on the right side of the eight circular extrusion rods (401); the mounting plate (403) is fixedly mounted on the right end of the circular drill tube (302); there are two linear electric cylinders (404) in total, and the two linear electric cylinders (404) are fixedly mounted on the left side of the mounting plate (403), and the output shafts of the two linear electric cylinders (404) are fixedly connected to the sealing bracket (402).

2. The device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels according to claim 1 is characterized in that: The support unit (100) further comprises: a driving motor A (104) and a driving screw rod A (105); the driving motor A (104) is mounted on the right side of the trolley (101) by means of screws; the driving screw rod A (105) is fixedly mounted on the output shaft of the driving motor A (104), and the driving screw rod A (105) is also threadedly connected to the movable support seat (103).

3. A device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels according to claim 2, characterized in that: The mounting unit (200) further comprises: a driving motor B (206) and a driving screw rod B (207); two driving motors B (206) are provided in total, and the two driving motors B (206) are fixedly installed on the top of the movable support seat (103); two driving screw rods B (207) are provided in total, and the two driving screw rods B (207) are fixedly installed on the output shafts of the two driving motors B (206), and the two driving screw rods B (207) are also threadedly connected to the two T-shaped driving blocks (204).

4. The device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels according to claim 1 is characterized in that: The disaster prevention and control unit (300) further comprises: a stress-bearing circular ring (306) and a supporting spring B (307); a total of eight stress-bearing circular rings (306) are provided, and the eight stress-bearing circular rings (306) are fixedly installed on the outside of the eight separation plug-ins (305); a total of eight supporting springs B (307) are provided, and the eight supporting springs B (307) are installed on the outside of the eight separation plug-ins (305), and the eight supporting springs B (307) are located on the inner sides of the eight stress-bearing circular rings (306).

5. The device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels according to claim 1 is characterized in that: The gas detection unit (500) comprises: a support frame (501), a circular suction cylinder (502), a gas detector (503) and a cross-shaped frame (504); two support frames (501) are provided, and the two support frames (501) are fixedly installed on the top of the driving motor C (301); the circular suction cylinder (502) is fixedly installed on the two support frames (501), and a row of exhaust slots (5021) is provided at the bottom of the circular suction cylinder (502), and the row of exhaust slots (5021) is located directly above the driving motor C (301); the gas detector (503) is fixedly installed inside the circular suction cylinder (502); and two cross-shaped frames (504) are provided, and the two cross-shaped frames (504) are fixedly installed inside the circular suction cylinder (502).

6. The device for preventing and controlling coal-rock dynamic disasters in coal mine tunneling tunnels according to claim 5 is characterized in that: The gas detection unit (500) further comprises: a circular connecting rod (505), an air suction impeller (506) and a connecting gear B (507); the circular connecting rod (505) is mounted on two cross frames (504) via two bearings; the air suction impeller (506) is fixedly mounted on the right end of the circular connecting rod (505); the connecting gear B (507) is fixedly mounted on the left end of the circular connecting rod (505), and the connecting gear B (507) is meshedly connected with the connecting gear A (304).

7. A method for preventing and controlling coal-rock dynamic disasters in coal mine excavation tunnels, using a device for preventing and controlling coal-rock dynamic disasters in coal mine excavation tunnels as claimed in claim 3, characterized in that: The steps are as follows: 1) Leveling a part of the bottom plate of the coal mine tunnel, and then moving the trolley (101) to the leveled area to ensure that the trolley (101) is in a horizontal position; 2) appropriately adjusting the height of the disaster prevention unit (300) by means of two driving motors B (206), and then reversing the driving motor A (104) so ​​that the two circular guide rods (102) are inserted into the corresponding holes on the two T-shaped driving blocks (204); 3) Push the trolley (101) to make the circular drill bit (303) contact the position to be drilled, then the staff controls the trolley (101) not to move, and then drives the drive motor A (104) to rotate forward; 4) When the drilling depth is reached, the driving motor C (301) is turned off, and then the staff extends the output shafts of the two linear electric cylinders (404) to insert the eight separation plugs (305) into the coal rock at the circular drill bit (303), and then starts the driving motor C (301), and then moves the circular drill tube (302) out through the trolley (101); 5) When the coal and rock in the circular drill tube (302) need to be cleaned, the staff retracts the output shafts of the two linear electric cylinders (404), and then lifts the handle of the trolley (101) to ensure that the disaster prevention and control unit (300) has an inclined angle, so that the coal and rock in the circular drill tube (302) automatically slide out under the action of gravity.

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