Movable tunnel construction gas monitoring and discharging device and method

Abstract

The invention relates to the field of tunnel construction, in particular to a movable tunnel construction gas monitoring and discharging device and method.The movable tunnel construction gas monitoring and discharging device comprises a base, a pumping and discharging pipe and a sensor mechanism, and a control panel used for receiving signals of the sensor mechanism is arranged on the base; an adjusting mechanism used for being connected with a pumping and discharging pipe is installed on the base, a pumping and discharging pump is fixedly connected to the base, the air inlet end of the pumping and discharging pump is connected with the pumping and discharging pipe through a corrugated pipe, and the adjusting mechanism comprises a horizontal adjusting component, a vertical adjusting component, a rotating component and an overturning component. The problem that the gas pumping efficiency is remarkably reduced is solved.

Description

Technical Field

[0001] The present invention relates to the field of tunnel construction, and in particular, to a movable gas monitoring and discharging device and method for tunnel construction. Background Art

[0002] During the process of tunnel construction, if the tunnel passes through coal seams, oil shale or bituminous rock formations, and the surrounding rock is broken and jointed, gas may be encountered. In addition, the vibration and ground stress changes during tunnel construction may also trigger coal seam extrusion or coal and gas outburst, resulting in the instantaneous release of a large amount of gas.

[0003] In the related art, a movable gas monitoring and discharging device for tunnel construction includes a base. The bottom of the base is fixedly connected with universal wheels for facilitating the movement of the base. A pumping and discharging pump is fixedly connected to the base. A fixing plate is fixedly connected to the base. A pumping and discharging pipe is fixedly connected to the fixing plate. The pumping and discharging pipe is communicated with the air inlet end of the pumping and discharging pump. The air outlet end of the pumping and discharging pump is connected to an external gas storage tank through a pipeline. A sensor mechanism is installed in the pumping and discharging pipe. The sensor mechanism includes a flow sensor, a gas sensor, a temperature sensor and a negative pressure sensor. A control panel is arranged on the base. The control panel can receive the signals sent by the flow sensor, the gas sensor, the temperature sensor and the negative pressure sensor, so as to monitor the gas pumped and discharged in the pumping and discharging pipe. A filter screen is fixedly connected to the end of the pumping and discharging pipe. The filter screen can filter the coal cinder and dust in the gas.

[0004] In view of the above related art, during the gas pumping and discharging operation, the moving range of the end of the pumping and discharging pipe is limited, and it can only be adjusted horizontally along the horizontal axis direction. When the spatial distance between the end of the pumping and discharging pipe and the gas leakage source in the tunnel increases, the limitation of this planar movement will lead to the extension of the pumping and discharging air flow path and the reduction of the effective coverage area, thereby resulting in a significant decrease in the gas pumping and discharging efficiency. Summary of the Invention

[0005] In order to solve the problem of a significant decrease in gas pumping and discharging efficiency, the present invention provides a movable gas monitoring and discharging device and method for tunnel construction.

[0006] In a first aspect, a movable gas monitoring and discharging device for tunnel construction provided by the present invention adopts the following technical solution: A movable gas monitoring and discharging device for tunnel construction includes a base, a pumping and discharging pipe and a sensor mechanism. A control panel for receiving the signals of the sensor mechanism is arranged on the base. An adjusting mechanism for connecting with the pumping and discharging pipe is installed on the base. A pumping and discharging pump is fixedly connected to the base. A corrugated pipe is connected between the air inlet end of the pumping and discharging pump and the pumping and discharging pipe. The adjusting mechanism includes a horizontal adjusting component, a vertical adjusting component, a rotating component and a flipping component.

[0007] Preferably, the horizontal adjustment component includes a sliding plate slidably mounted on the base, the vertical adjustment component includes a second screw rod rotatably mounted on the sliding plate, a second motor is fixedly connected to the sliding plate, the output shaft of the second motor is connected to the second screw rod through a gear, a threaded cylinder is sleeved on the second screw rod, a vertical guide rod passing through the threaded cylinder is fixedly connected to the base, the rotating component is mounted on the threaded cylinder, the flipping component is mounted on the rotating component, and the exhaust pipe is connected to the flipping component.

[0008] Preferably, the rotating component includes a rotating plate rotatably mounted on the threaded cylinder, a third motor is fixedly connected to the threaded cylinder, the output shaft of the third motor is connected to the rotating shaft in the rotating plate through a gear; the flipping component includes a flipping shaft rotatably mounted on the rotating plate, a fourth motor is fixedly connected to the rotating plate, the output shaft of the fourth motor is fixedly connected to the flipping shaft, a mounting frame is fixedly connected to the flipping shaft, and the mounting frame is fixedly connected to the exhaust pipe.

[0009] Preferably, a filter screen is rotatably mounted at the end of the exhaust pipe, a cleaning mechanism is mounted on the exhaust pipe, a sliding groove is formed in the inner wall of the exhaust pipe, the cleaning mechanism includes a sliding block slidably mounted in the sliding groove, a cleaning plate is mounted on the sliding block, cleaning columns corresponding to the mesh holes of the filter screen are fixedly connected to the cleaning plate, a transmission mechanism is mounted on the exhaust pipe, the second motor can drive the sliding block to move through the transmission mechanism, and the second motor can drive the filter screen to rotate through the transmission mechanism.

[0010] Preferably, a mounting plate is fixedly connected to the threaded cylinder, the transmission mechanism includes a telescopic rotating shaft rotatably mounted between the sliding plate and the mounting plate, a first gear is fixedly connected to the second motor, a turntable is fixedly connected to the telescopic rotating shaft, a plurality of teeth meshing with the first gear are hingedly connected to the turntable, the hinge shaft mounted in the teeth is located on one side of the teeth, a torsion spring is sleeved on the hinge shaft mounted in the teeth, a first bevel gear is fixedly connected to the telescopic rotating shaft, a reciprocating screw rod is rotatably mounted in the sliding groove, the reciprocating screw rod passes through the sliding block and is threadedly connected to the sliding block, a transmission shaft is rotatably mounted on the inner wall of the sliding groove, the transmission shaft is connected to the reciprocating screw rod through a bevel gear set, the transmission shaft extends to the outside of the exhaust pipe, and a second bevel gear capable of meshing with the first bevel gear is fixedly connected to the transmission shaft.

[0011] Preferably, an annular groove is formed at the end of the exhaust pipe, the reciprocating screw extends into the annular groove, a toothed ring is fixedly connected to the filter net, a second gear meshing with the toothed ring is fixedly connected to the reciprocating screw, an arc-shaped chute is formed in the sliding block, an arc-shaped slider is slidably installed in the arc-shaped chute, the arc-shaped slider is connected to the cleaning plate, and a first spring is fixedly connected between the arc-shaped slider and the inner wall of the arc-shaped chute.

[0012] Preferably, the cleaning plate is hinged to the arc-shaped slider, a torsion spring is sleeved on the hinge shaft installed in the cleaning plate, the cleaning plate can be received in the sliding groove, a butting groove communicating with the sliding groove is formed in the side wall of the exhaust pipe, a butting plate is slidably installed in the butting groove, the butting plate contacts the mounting plate, a butting rod penetrates through the sliding block, one end of the butting rod contacts the butting plate, the other end of the butting rod penetrates into the arc-shaped chute, a pushing plate is slidably installed on the inner wall of the arc-shaped chute, the butting rod is fixedly connected to the pushing plate, a pushing rod penetrates through the arc-shaped slider, a pushing inclined surface contacting the pushing plate is formed at the bottom of the pushing rod, and the top of the pushing rod contacts the cleaning plate.

[0013] Preferably, a collecting cylinder arranged below the filter net is fixedly connected to the base, a drainage groove is formed on the end face of the filter net facing the outside, the end face of the filter net facing the outside is a conical surface, and a drain pipe communicated with the drainage groove is fixedly connected to the exhaust pipe.

[0014] Preferably, a cleaning mechanism is installed in the collecting cylinder, the cleaning mechanism includes a guiding cylinder fixedly connected to the inner bottom surface of the collecting cylinder, a cleaning rod penetrates through the guiding cylinder, a second spring is fixedly connected between the inner wall of the guiding cylinder and the cleaning rod, a cleaning plate is fixedly connected to the cleaning rod, and a brush capable of contacting the filter net is fixedly connected to the cleaning plate.

[0015] In a second aspect, a movable tunnel construction gas monitoring and discharging method provided by the present invention adopts the following technical solution: A movable tunnel construction gas monitoring and discharging method includes the following steps: S1. First, move the base to the vicinity of the gas leakage source in the tunnel; S2. Then, start the second motor, the first motor, the third motor and the fourth motor in sequence to adjust the position of the exhaust pipe; S3. When the exhaust pipe is close to the gas leakage source, start the exhaust pump and the sensor mechanism, the exhaust pipe discharges the gas, and the sensor mechanism monitors the flow rate, temperature and pressure values in the exhaust pipe; S4. After a period of time, turn off the exhaust pump and the sensor mechanism, and then start the fourth motor, the third motor, the first motor, and the second motor in sequence, so that the exhaust pipe returns to the initial position. At the same time, the second motor drives the cleaning column to move and drives the filter screen to rotate to clean the filter screen; S5. After the filter screen is cleaned, repeat the above operations.

[0016] In summary, the present invention includes at least the following beneficial technical effects: 1. When it is necessary to discharge gas, first move the base to the vicinity of the gas emission source in the tunnel, and then start the vertical adjustment component, the horizontal adjustment component, the rotation component, and the flipping component in sequence to adjust the position of the exhaust pipe so that the exhaust pipe is close to the gas emission source. Subsequently, start the exhaust pump and the sensor mechanism, and the exhaust pipe discharges the gas. The sensor mechanism monitors the flow rate, temperature, and pressure values in the exhaust pipe, solving the problem of a significant decrease in gas drainage efficiency; 2. After a period of time, turn off the exhaust pump and the sensor mechanism, and then start the fourth motor, the third motor, the first motor, and the second motor in sequence, so that the exhaust pipe returns to the initial position. At the same time, the second motor drives the sliding block to move through the transmission mechanism, the sliding block drives the cleaning plate to move, and the cleaning plate drives the cleaning column to move, so that the cleaning column is inserted into the mesh holes of the filter screen to clean the filter screen. After the cleaning column is pulled out from the mesh holes of the filter screen, the second motor transmission mechanism drives the filter screen to rotate, and then the sliding block continues to move to clean the filter screen, so that the filter screen is comprehensively cleaned; 3. When discharging gas, the cleaning plate is stored in the sliding groove. When the exhaust pipe is flipped to the initial state, the abutting plate contacts the mounting plate, the mounting plate pushes the abutting plate to move, the abutting plate drives the abutting rod to move, the abutting rod drives the pushing plate to move, the pushing plate drives the pushing rod to move, and the pushing rod drives the cleaning plate to flip, so that the cleaning plate flips above the filter screen to clean the filter screen. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the movable tunnel construction gas monitoring and discharging device according to the embodiment of the present invention.

[0018] Figure 2 is the structural schematic diagram of the adjustment mechanism according to the embodiment of the present invention.

[0019] Figure 3 is the structural schematic diagram of the cleaning mechanism according to the embodiment of the present invention.

[0020] Figure 4 is the structural schematic diagram of the tooth structure according to the embodiment of the present invention.

[0021] Figure 5It is a schematic structural diagram of a rotating component according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic structural diagram of a sensor mechanism according to an embodiment of the present invention.

[0023] Figure 7 It is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention.

[0024] Figure 8 It is a schematic structural diagram of an arc-shaped slider according to an embodiment of the present invention.

[0025] Figure 9 It is a schematic structural diagram of a filter screen according to an embodiment of the present invention.

[0026] Explanation of reference numerals: 1, base; 11, control panel; 12, exhaust pump; 13, bellows; 14, collection cylinder; 2, exhaust pipe; 21, filter screen; 22, sliding groove; 23, annular groove; 24, abutting groove; 25, drainage groove; 26, drain pipe; 3, sensor mechanism; 31, flow sensor; 32, gas sensor; 33, temperature sensor; 34, negative pressure sensor; 4, adjustment mechanism; 41, first screw; 42, first motor; 43, sliding plate; 44, second screw; 441, threaded cylinder; 442, mounting plate; 45, second motor; 451, first gear; 46, rotating plate; 47, third motor; 48, turning shaft; 481, mounting frame; 49, fourth motor; 5, cleaning mechanism; 51, sliding block; 511, arc-shaped sliding groove; 52, cleaning plate; 53, cleaning column; 54, arc-shaped slider; 55, first spring; 56, abutting plate; 57, abutting rod; 58, pushing plate; 59, pushing rod; 6, transmission mechanism; 61, telescopic rotating shaft; 611, first bevel gear; 62, turntable; 63, teeth; 64, reciprocating screw; 641, second gear; 65, transmission shaft; 651, second bevel gear; 66, toothed ring; 7, cleaning mechanism; 71, guiding cylinder; 72, cleaning rod; 73, second spring; 74, cleaning plate. Detailed implementation manners

[0027] The following will Figure 1 - with reference to the appended Figure 9 further describe the present invention in detail.

[0028] An embodiment of the present invention discloses a movable tunnel construction gas monitoring and discharging device and method. Refer to Figures 1 to 6, The movable gas monitoring and discharging device for tunnel construction includes a base 1, a suction and discharge pipe 2, and a sensor mechanism 3. A control panel 11 for receiving signals from the sensor mechanism 3 is provided on the base 1. The sensor mechanism 3 is installed inside the suction and discharge pipe 2. The sensor mechanism 3 includes a flow sensor 31, a gas sensor 32, a temperature sensor 33, and a negative pressure sensor 34. An adjustment mechanism 4 for connecting with the suction and discharge pipe 2 is installed on the base 1. A suction and discharge pump 12 is fixedly connected to the base 1. The air inlet end of the suction and discharge pump 12 is connected to the suction and discharge pipe 2 through a corrugated pipe 13. The adjustment mechanism 4 includes a horizontal adjustment component, a vertical adjustment component, a rotating component, and a flipping component. When gas needs to be discharged, first move the base 1 near the gas leakage source in the tunnel, and then start the vertical adjustment component, horizontal adjustment component, rotating component, and flipping component in sequence to adjust the position of the suction and discharge pipe 2 so that the suction and discharge pipe 2 is close to the gas leakage source, solving the problem of a significant decrease in gas suction and discharge efficiency. Subsequently, start the suction and discharge pump 12 and the sensor mechanism 3. The suction and discharge pipe 2 discharges the gas, and the sensor mechanism 3 monitors the flow rate, temperature, and pressure values inside the suction and discharge pipe 2.

[0029] Refer to Figures 1 to 3 , The horizontal adjustment component includes a first screw rod 41 rotatably installed on the base 1. A first motor 42 is fixedly connected to the base 1. The output shaft of the first motor 42 is fixedly connected to the first screw rod 41. A slide plate 43 is slidably installed on the base 1. The first screw rod 41 passes through the slide plate 43 and is threadedly connected to the slide plate 43. Start the first motor 42, and the first motor 42 drives the first screw rod 41 to rotate. The first screw rod 41 drives the slide plate 43 to move. The vertical adjustment component includes a second screw rod 44 rotatably installed on the slide plate 43. A second motor 45 is fixedly connected to the slide plate 43. The output shaft of the second motor 45 is connected to the second screw rod 44 through a gear. A threaded cylinder 441 is sleeved on the second screw rod 44. A vertical guide rod passing through the threaded cylinder 441 is fixedly connected to the base 1. The rotating component is installed on the threaded cylinder 441, and the flipping component is installed on the rotating component. The suction and discharge pipe 2 is connected to the flipping component. Start the second motor 45, and the second motor 45 drives the second screw rod 44 to rotate. The second screw rod 44 drives the threaded cylinder 441 to move. The threaded cylinder 441 drives the rotating component to move. The rotating component drives the flipping component to move. The flipping component drives the suction and discharge pipe 2 to move.

[0030] Refer to Figures 1 to 4, the rotating component includes a rotating plate 46 rotatably mounted on the threaded barrel 441. A third motor 47 is fixedly connected to the threaded barrel 441. The output shaft of the third motor 47 is connected to the rotating shaft in the rotating plate 46 through gears. The flipping component includes a flipping shaft 48 rotatably mounted on the rotating plate 46. A fourth motor 49 is fixedly connected to the rotating plate 46. The output shaft of the fourth motor 49 is fixedly connected to the flipping shaft 48. An installation frame 481 is fixedly connected to the flipping shaft 48. The installation frame 481 is fixedly connected to the exhaust pipe 2. Start the third motor 47 and the fourth motor 49. The third motor 47 drives the rotating plate 46 to rotate, the rotating plate 46 drives the exhaust pipe 2 to rotate, the fourth motor 49 drives the flipping shaft 48 to flip, the flipping shaft 48 drives the installation frame 481 to flip, and the installation frame 481 drives the exhaust pipe 2 to flip.

[0031] Refer to Figure 5 and Figure 6 , a filter screen 21 is rotatably mounted at the end of the exhaust pipe 2. A cleaning mechanism 5 is installed on the exhaust pipe 2. A sliding groove 22 is formed on the inner wall of the exhaust pipe 2. The cleaning mechanism 5 includes a sliding block 51 slidably mounted in the sliding groove 22. A cleaning plate 52 is installed on the sliding block 51. A cleaning column 53 corresponding to the mesh holes on the filter screen 21 is fixedly connected to the cleaning plate 52. The mesh holes on the filter screen 21 are evenly distributed in a circle around the center of the filter screen 21. A transmission mechanism 6 is installed on the exhaust pipe 2. The second motor 45 can drive the sliding block 51 to move through the transmission mechanism 6, and the second motor 45 can drive the filter screen 21 to rotate through the transmission mechanism 6. After a period of time, turn off the exhaust pump 12 and the sensor mechanism 3, and start the fourth motor 49, the third motor 47, the first motor 42, and the second motor 45 in sequence, so that the exhaust pipe 2 returns to the initial position. At the same time, the second motor 45 drives the sliding block 51 to move through the transmission mechanism 6. The sliding block 51 drives the cleaning plate 52 to move, and the cleaning plate 52 drives the cleaning column 53 to move, so that the cleaning column 53 is inserted into the mesh holes on the filter screen 21 to clean the filter screen 21. When the cleaning column 53 is pulled out of the mesh holes on the filter screen 21, the second motor 45 drives the filter screen 21 to rotate through the transmission mechanism 6, and then the sliding block 51 continues to move to clean the filter screen 21, so that the filter screen 21 is cleaned comprehensively.

[0032] Refer to Figures 3 to 6, a mounting plate 442 is fixedly connected to the threaded cylinder 441. The transmission mechanism 6 includes a telescopic rotating shaft 61 rotatably mounted between the sliding plate 43 and the mounting plate 442. A first gear 451 is fixedly connected to the second motor 45. A turntable 62 is fixedly connected to the telescopic rotating shaft 61. A plurality of teeth 63 meshing with the first gear 451 are hingedly connected to the turntable 62. The hinge shaft mounted in the teeth 63 is located on one side of the teeth 63. A torsion spring is sleeved on the hinge shaft mounted in the teeth 63. A first bevel gear 611 is fixedly connected to the telescopic rotating shaft 61. A reciprocating screw 64 is rotatably mounted in the sliding groove 22. The reciprocating screw 64 passes through the sliding block 51 and is threadedly connected to the sliding block 51. A transmission shaft 65 is rotatably mounted on the inner wall of the sliding groove 22. The transmission shaft 65 is connected to the reciprocating screw 64 through a bevel gear set. The transmission shaft 65 extends to the outside of the exhaust pipe 2. A second bevel gear 651 capable of meshing with the first bevel gear 611 is fixedly connected to the transmission shaft 65. During the startup of the second motor 45, the second motor 45 drives the first gear 451 to rotate. During the upward movement of the exhaust pipe 2, the first gear 451 cannot drive the teeth 63 to rotate. During the downward retraction of the exhaust pipe 2, the first gear 451 drives the teeth 63 to rotate. The teeth 63 drive the turntable 62 to rotate. The turntable 62 drives the telescopic rotating shaft 61 to rotate. The telescopic rotating shaft 61 drives the first bevel gear 611 to rotate. The first bevel gear 611 drives the second bevel gear 651 to rotate. The second bevel gear 651 drives the transmission shaft 65 to rotate. The transmission shaft 65 drives the reciprocating screw 64 to rotate. The reciprocating screw 64 drives the sliding block 51 to move reciprocally.

[0033] Refer to Figures 4 to 8 , an annular groove 23 is formed at the end of the exhaust pipe 2. The reciprocating screw 64 extends into the annular groove 23. A toothed ring 66 is fixedly connected to the filter screen 21. A second gear 641 meshing with the toothed ring 66 is fixedly connected to the reciprocating screw 64. An arc-shaped sliding groove 511 is formed in the sliding block 51. An arc-shaped sliding block 54 is slidably mounted in the arc-shaped sliding groove 511. The arc-shaped sliding block 54 is connected to the cleaning plate 52. A first spring 55 is fixedly connected between the arc-shaped sliding block 54 and the inner wall of the arc-shaped sliding groove 511. During the rotation of the reciprocating screw 64, the reciprocating screw 64 drives the second gear 641 to rotate. The second gear 641 drives the toothed ring 66 to rotate. The toothed ring 66 drives the filter screen 21 to rotate. At the same time, the filter screen 21 can drive the cleaning column 53 to move. The cleaning column 53 drives the arc-shaped sliding block 54 to slide in the arc-shaped sliding groove 511, compressing the first spring 55. When the cleaning column 53 is pulled out of the filter screen 21, the first spring 55 drives the cleaning column 53 to return to the initial position to continue cleaning the filter screen 21.

[0034] Refer to Figures 5 to 8, the cleaning plate 52 is hingedly connected to the arc-shaped slider 54. A torsion spring is sleeved on the hinge shaft installed in the cleaning plate 52. The cleaning plate 52 can be accommodated in the sliding groove 22. A butting groove 24 communicating with the sliding groove 22 is formed on the side wall of the exhaust pipe 2. A butting plate 56 is slidably installed in the butting groove 24. The butting plate 56 contacts the mounting plate 442. A butting rod 57 penetrates through the sliding block 51. One end of the butting rod 57 contacts the butting plate 56. The other end of the butting rod 57 penetrates into the arc-shaped chute 511. A pushing plate 58 is slidably installed on the inner wall of the arc-shaped chute 511. The butting rod 57 is fixedly connected to the pushing plate 58. A pushing rod 59 penetrates through the arc-shaped slider 54. A pushing inclined surface contacting the pushing plate 58 is formed at the bottom of the pushing rod 59. The top of the pushing rod 59 contacts the cleaning plate 52. When discharging gas, the cleaning plate 52 is accommodated in the sliding groove 22. When the exhaust pipe 2 is flipped to the initial state, the butting plate 56 contacts the mounting plate 442. The mounting plate 442 pushes the butting plate 56 to move. The butting plate 56 drives the butting rod 57 to move. The butting rod 57 drives the pushing plate 58 to move. The pushing plate 58 drives the pushing rod 59 to move. The pushing rod 59 drives the cleaning plate 52 to flip, so that the cleaning plate 52 flips above the filter net 21, thereby cleaning the filter net 21.

[0035] Refer to Figures 1 to 9 , a collection cylinder 14 arranged below the filter net 21 is fixedly connected to the base 1. A drainage groove 25 is formed on the end surface of the filter net 21 facing the outside. The end surface of the filter net 21 facing the outside is a conical surface. A drain pipe 26 communicating with the drainage groove 25 is fixedly connected to the exhaust pipe 2. The water vapor in the gas can flow along the drainage groove 25 and finally be discharged through the drain pipe 26, reducing the attachment of water vapor on the filter net 21.

[0036] Refer to Figures 1 to 3 , a cleaning mechanism 7 is installed in the collection cylinder 14. The cleaning mechanism 7 includes a guiding cylinder 71 fixedly connected to the inner bottom surface of the collection cylinder 14. A cleaning rod 72 penetrates through the guiding cylinder 71. A second spring 73 is fixedly connected between the inner wall of the guiding cylinder 71 and the cleaning rod 72. A cleaning plate 74 is fixedly connected to the cleaning rod 72. A brush capable of contacting the filter net 21 is fixedly connected to the cleaning plate 74. During the process of the filter net 21 being retracted downward, the filter net 21 contacts the brush. At the same time, the filter net 21 rotates, and the brush can sweep the coal cinder and dust on the filter net 21, further cleaning the filter net 21.

[0037] The implementation principle of a movable gas monitoring and emission device for tunnel construction in an embodiment of the present invention is as follows: When gas needs to be discharged, first move the base 1 near the gas leakage source in the tunnel, and then start the second motor 45, the first motor 42, the third motor 47, and the fourth motor 49 in sequence. The second motor 45 drives the exhaust pipe 2 to move vertically, the first motor 42 drives the exhaust pipe 2 to move horizontally, the third motor 47 drives the exhaust pipe 2 to rotate, and the fourth motor 49 drives the exhaust pipe 2 to flip, thereby adjusting the position of the exhaust pipe 2 to make the exhaust pipe 2 close to the gas leakage source, solving the problem of a significant decrease in gas exhaust efficiency. Subsequently, start the exhaust pump 12 and the sensor mechanism 3. The exhaust pipe 2 discharges the gas, and the sensor mechanism 3 monitors the flow rate, temperature, and pressure values inside the exhaust pipe 2. After a period of time, turn off the exhaust pump 12 and the sensor mechanism 3, and start the fourth motor 49, the third motor 47, the first motor 42, and the second motor 45 in sequence to make the exhaust pipe 2 return to the initial position; during the downward return process of the exhaust pipe 2, the second motor 45 drives the first gear 451 to rotate, the first gear 451 drives the tooth 63 to rotate, the tooth 63 drives the turntable 62 to rotate, the turntable 62 drives the sliding block 51 to move reciprocally, the sliding block 51 drives the cleaning column 53 to insert into the mesh holes on the filter screen 21, and at the same time, the reciprocating screw 64 drives the filter screen 21 to rotate, comprehensively cleaning the filter screen 21. When the filter screen 21 contacts the brush, the brush sweeps off the coal cinder and dust on the filter screen 21, further cleaning the filter screen 21.

[0038] A movable gas monitoring and emission method for tunnel construction includes the following steps: S1. First, move the base 1 near the gas leakage source in the tunnel.

[0039] S2. Then, start the second motor 45, the first motor 42, the third motor 47, and the fourth motor 49 in sequence to adjust the position of the exhaust pipe 2.

[0040] S3. When the exhaust pipe 2 is close to the gas leakage source, start the exhaust pump 12 and the sensor mechanism 3. The exhaust pipe 2 discharges the gas, and the sensor mechanism 3 monitors the flow rate, temperature, and pressure values inside the exhaust pipe 2.

[0041] S4. After a period of time, turn off the exhaust pump 12 and the sensor mechanism 3, and start the fourth motor 49, the third motor 47, the first motor 42, and the second motor 45 in sequence to make the exhaust pipe 2 return to the initial position. At the same time, the second motor 45 drives the cleaning column 53 to move, drives the filter screen 21 to rotate, and cleans the filter screen 21.

[0042] S5. After the filter screen 21 is cleaned, repeat the above operations.

[0043] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A movable gas monitoring and discharging device for tunnel construction, comprising a base (1), a suction and discharge pipe (2) and a sensor mechanism (3), wherein a control panel (11) for receiving signals from the sensor mechanism (3) is arranged on the base (1), and is characterized in that: An adjusting mechanism (4) for connecting with an exhaust pipe (2) is installed on the base (1). A suction pump (12) is fixedly connected to the base (1). A corrugated pipe (13) is connected between the air inlet end of the suction pump (12) and the exhaust pipe (2). The adjusting mechanism (4) includes a horizontal adjusting component, a vertical adjusting component, a rotating component, and a flipping component.

2. The movable tunnel construction gas monitoring and emission device according to claim 1, characterized in that: The horizontal adjusting component includes a sliding plate (43) slidably installed on the base (1). The vertical adjusting component includes a second screw rod (44) rotatably installed on the sliding plate (43). A second motor (45) is fixedly connected to the sliding plate (43). The output shaft of the second motor (45) is connected to the second screw rod (44) through gears. A threaded cylinder (441) is sleeved on the second screw rod (44). A vertical guide rod passing through the threaded cylinder (441) is fixedly connected to the base (1). The rotating component is installed on the threaded cylinder (441), and the flipping component is installed on the rotating component. The exhaust pipe (2) is connected to the flipping component.

3. The movable gas monitoring and discharging device for tunnel construction according to claim 2, wherein: The rotating component includes a rotating plate (46) rotatably installed on the threaded cylinder (441). A third motor (47) is fixedly connected to the threaded cylinder (441). The output shaft of the third motor (47) is connected to the rotating shaft in the rotating plate (46) through gears. The flipping component includes a flipping shaft (48) rotatably installed on the rotating plate (46). A fourth motor (49) is fixedly connected to the rotating plate (46). The output shaft of the fourth motor (49) is fixedly connected to the flipping shaft (48). An installation frame (481) is fixedly connected to the flipping shaft (48). The installation frame (481) is fixedly connected to the exhaust pipe (2).

4. The movable tunnel construction gas monitoring and emission device according to claim 2, characterized in that: A filter screen (21) is rotatably installed at the end of the exhaust pipe (2). A cleaning mechanism (5) is installed on the exhaust pipe (2). A sliding groove (22) is formed on the inner wall of the exhaust pipe (2). The cleaning mechanism (5) includes a sliding block (51) slidably installed in the sliding groove (22). A cleaning plate (52) is installed on the sliding block (51). Cleaning columns (53) corresponding to the mesh holes on the filter screen (21) are fixedly connected to the cleaning plate (52). A transmission mechanism (6) is installed on the exhaust pipe (2). The second motor (45) can drive the sliding block (51) to move through the transmission mechanism (6), and the second motor (45) can drive the filter screen (21) to rotate through the transmission mechanism (6).

5. A movable gas monitoring and emission device for tunnel construction according to claim 4, characterized in that: An installation plate (442) is fixedly connected to the threaded cylinder (441). The transmission mechanism (6) includes a telescopic rotating shaft (61) rotatably installed between the sliding plate (43) and the installation plate (442). A first gear (451) is fixedly connected to the second motor (45). A turntable (62) is fixedly connected to the telescopic rotating shaft (61). A plurality of teeth (63) meshing with the first gear (451) are hingedly connected to the turntable (62). The hinge shaft installed in the teeth (63) is located on one side of the teeth (63). A torsion spring is sleeved on the hinge shaft installed in the teeth (63). A first bevel gear (611) is fixedly connected to the telescopic rotating shaft (61). A reciprocating screw rod (64) is rotatably installed in the sliding groove (22). The reciprocating screw rod (64) passes through the sliding block (51) and is threadedly connected to the sliding block (51). A transmission shaft (65) is rotatably installed on the inner wall of the sliding groove (22). The transmission shaft (65) is connected to the reciprocating screw rod (64) through a bevel gear set. The transmission shaft (65) extends to the outside of the exhaust pipe (2). A second bevel gear (651) capable of meshing with the first bevel gear (611) is fixedly connected to the transmission shaft (65).

6. The movable gas monitoring and discharging device for tunnel construction according to claim 5, wherein: An annular groove (23) is formed at the end of the exhaust pipe (2). The reciprocating screw rod (64) extends into the annular groove (23). A toothed ring (66) is fixedly connected to the filter screen (21). A second gear (641) meshing with the toothed ring (66) is fixedly connected to the reciprocating screw rod (64). An arc-shaped sliding groove (511) is formed in the sliding block (51). An arc-shaped sliding block (54) is slidably installed in the arc-shaped sliding groove (511). The arc-shaped sliding block (54) is connected to the cleaning plate (52). A first spring (55) is fixedly connected between the arc-shaped sliding block (54) and the inner wall of the arc-shaped sliding groove (511).

7. The movable tunnel construction gas monitoring and emission device according to claim 6, characterized in that: The cleaning plate (52) is hingedly connected to the arc-shaped sliding block (54). A torsion spring is sleeved on the hinge shaft installed in the cleaning plate (52). The cleaning plate (52) can be received in the sliding groove (22). An abutting groove (24) communicating with the sliding groove (22) is formed in the side wall of the exhaust pipe (2). An abutting plate (56) is slidably installed in the abutting groove (24). The abutting plate (56) contacts the installation plate (442). An abutting rod (57) passes through the sliding block (51). One end of the abutting rod (57) contacts the abutting plate (56). The other end of the abutting rod (57) passes through the arc-shaped sliding groove (511). A pushing plate (58) is slidably installed on the inner wall of the arc-shaped sliding groove (511). The abutting rod (57) is fixedly connected to the pushing plate (58). A pushing rod (59) passes through the arc-shaped sliding block (54). A pushing inclined surface contacting the pushing plate (58) is formed at the bottom of the pushing rod (59). The top of the pushing rod (59) contacts the cleaning plate (52).

8. A movable gas monitoring and discharging device for tunnel construction according to claim 4, characterized in that: A collecting cylinder (14) disposed below a filter mesh (21) is fixedly connected to the base (1). A drain groove (25) is formed in an end face of the filter mesh (21) facing the outside. The end face of the filter mesh (21) facing the outside is a conical surface. A drain pipe (26) communicating with the drain groove (25) is fixedly connected to the exhaust pipe (2).

9. A movable gas monitoring and discharging device for tunnel construction according to claim 8, characterized in that: A cleaning mechanism (7) is installed in the collecting cylinder (14). The cleaning mechanism (7) includes a guiding cylinder (71) fixedly connected to the inner bottom surface of the collecting cylinder (14). A cleaning rod (72) is inserted through the guiding cylinder (71). A second spring (73) is fixedly connected between an inner wall of the guiding cylinder (71) and the cleaning rod (72). A cleaning plate (74) is fixedly connected to the cleaning rod (72). A brush capable of contacting the filter mesh (21) is fixedly connected to the cleaning plate (74).

10. A movable gas monitoring and emission method for tunnel construction, using a movable gas monitoring and emission device for tunnel construction according to any one of claims 1-9, characterized in that, It includes the following steps: S1. First, move the base (1) to a position near a gas leakage source in the tunnel; S2. Then, start the second motor (45), the first motor (42), the third motor (47), and the fourth motor (49) in sequence to adjust the position of the exhaust pipe (2); S3. When the exhaust pipe (2) approaches the gas leakage source, start the exhaust pump (12) and the sensor mechanism (3). The exhaust pipe (2) discharges the gas. The sensor mechanism (3) monitors the flow rate, temperature, and pressure values in the exhaust pipe (2); S4. After a period of time, turn off the exhaust pump (12) and the sensor mechanism (3), and start the fourth motor (49), the third motor (47), the first motor (42), and the second motor (45) in sequence to make the exhaust pipe (2) return to the initial position. At the same time, the second motor (45) drives the cleaning column (53) to move, drives the filter mesh (21) to rotate, and cleans the filter mesh (21); S5. After the filter mesh (21) is cleaned, repeat the above operations.

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