Movable extraction device for corner gas on tunnel working face

Abstract

The utility model discloses a movable extraction device for corner gas on a tunnel working face, which belongs to the technical field of gas extraction and comprises a box body, a moving mechanism is arranged at the bottom of the box body, a diluting mechanism is arranged in an inner cavity of the box body, an air suction mechanism is arranged in the inner cavity of the box body, and a filter box is fixedly connected to the outer side of the box body. And the side parts of the filter box and the box body are fixedly connected with brackets. According to the device, the multi-stage electric push rod drives the movable seat and the suction head to extend outwards, so that the air guide hose is driven to stretch, the second motor drives the U-shaped frame and the suction head to rotate, and meanwhile, the first motor drives the first gear to rotate; and the rotating steel pipe, the rotating seat and the suction head are driven to rotate through meshing transmission between the first gear and the second gear, so that the suction head is arranged at the upper corner, effective gas extraction is guaranteed, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction, and more specifically, to a movable gas extraction device for a corner of a tunnel working surface. Background Art

[0002] Gas is a general term for harmful gases in underground tunnels, and its main component is biogas, which is generally called gas. When a tunnel passes through coal seams, oil shale or asphalt-containing rock formations, or passes through nearby surrounding rocks with broken and developed joints, gas may be encountered. If the gas concentration in the air in the tunnel has reached the explosion limit and comes into contact with the fire source, it will cause an explosion, which will cause great harm and loss to the tunnel construction. Therefore, when building a tunnel in a gas-containing stratum, corresponding measures must be taken to ensure safe and smooth construction. However, gas is easily accumulated in the corners of the tunnel working surface, and it is not easy to discharge the gas.

[0003] After searching, the utility model patent with announcement number CN218716966U discloses a movable gas extraction device for the upper corner of a comprehensive mining working face, comprising a base, a protection box is arranged on the upper end face of the base, a first tee and a second tee are arranged inside the protection box, a first pipe opening of the first tee is connected to the inert gas tank through an inert gas pipeline, a second pipe opening of the first tee is connected to the air inlet pipe, a third pipe opening of the first tee is connected to the air inlet of an air intake fan through a pipeline, and the air outlet of the air intake fan is connected to the air outlet pipe; a first pipe opening of the second tee is connected to the air outlet of an exhaust fan, the air inlet of the exhaust fan is connected to the air intake pipe, a second pipe opening of the second tee is connected to the exhaust pipe, and the third pipe opening of the second tee is connected to the filling bin and the inside of a processing tank through a pipeline in sequence; the problem that the current upper corner gas extraction device cannot be used without the air inlet pipe and the air outlet pipe and has great limitations is solved.

[0004] However, the above patents still have the following shortcomings: when the inert gas is introduced into the upper corner by the air outlet pipe to dilute the gas and the gas in the upper corner is extracted by the air inlet pipe, it is not convenient to place the air outlet pipe and the air inlet pipe at the upper corner, which affects the dilution and extraction effect. When the extraction device is moved and fixed by the moving wheel and the plug rod, the device needs to be pushed manually to move, and the plug rod needs to be manually rotated to insert the bottom end into the ground. When it is repeatedly moved to multiple places, it is not convenient to use. For this reason, we propose a movable gas extraction device for the upper corner of the tunnel working surface. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a movable gas extraction device for the upper corner of a tunnel working face.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A movable gas extraction device for the corner of a tunnel working face comprises a box body, a movable mechanism is arranged at the bottom of the box body, a dilution mechanism is arranged at the inner cavity of the box body, an air suction mechanism is arranged at the inner cavity of the box body, a filter box is fixedly connected to the outer side of the box body, the filter box and the side of the box body are fixedly connected to brackets, two rotating steel pipes are rotatably connected to the two brackets respectively, one end of the two rotating steel pipes is fixedly sleeved with a rotating joint, an end of the rotating joint is fixedly sleeved to the inner cavity of the filter box, the other ends of the two rotating steel pipes are fixedly sleeved with a rotating seat, the outer side of the rotating seat is fixedly connected to two rotating frames, and the two rotating frames rotate between them A U-shaped frame is connected, and a multi-stage electric push rod is fixedly installed on the U-shaped frame, the output end of the multi-stage electric push rod extends to the outside of the U-shaped frame and is fixedly connected to a moving seat, a suction head is fixedly sleeved on the moving seat, and the tail end of the suction head is fixedly connected to an air guide hose, and the end of the air guide hose is connected to the other end of a rotating steel pipe, a second motor is fixedly installed on the outer side of the rotating frame, the output shaft of the second motor is connected to one end of the U-shaped frame rotating shaft, a second gear is fixedly sleeved on the outer side of the rotating steel pipe, a first motor is fixedly installed on the bracket, and the output shaft of the first motor is fixedly sleeved with a first gear, and the first gear and the second gear are meshed with each other.

[0008] As a preferred solution of the utility model, the mobile mechanism includes a base fixedly connected to the bottom surface of the box body, the bottom surface of the base is fixedly connected to two mobile frames, the two mobile frames are rotatably connected with transmission rods, the ends of the two transmission rods are respectively fixedly sleeved with driving wheels, a dual-axis motor is fixedly installed on the bottom surface of the base, the two output shafts of the dual-axis motor are respectively connected to the other ends of the two transmission rods, the bottom surface of the base is fixedly connected to an installation box, the inner cavity of the installation box is fixedly installed with a third motor, and the output shaft of the third motor extends to the bottom of the installation box and is fixedly connected to a steering wheel.

[0009] As a preferred solution of the utility model, the dilution mechanism includes a first fan fixedly installed on the inner wall of the box body and an inert gas tank fixedly connected to the inner cavity of the box body, the output end of the first fan is connected to the end of another rotary joint, the input end of the first fan is fixedly connected to a first three-way pipe, one end of the first three-way pipe is fixedly sleeved to the top of the box body, and the other end of the first three-way pipe is fixedly sleeved to the inner cavity of the inert gas tank, and first electric-controlled valves are respectively provided at both ends of the first three-way pipe.

[0010] As a preferred solution of the utility model, the air suction mechanism includes a second fan fixedly installed on the inner wall of the box body and a filling tank and an absorption tank fixedly connected to the inner cavity of the box body, a treatment pipe is fixedly connected between the filling tank and the absorption tank, the input end of the second fan extends to the inner cavity of the filter box, the output end of the second fan is fixedly connected to a second three-way pipe, one end of the second three-way pipe extends to the outside of the box body, and the other end of the second three-way pipe is fixedly sleeved on the inner cavity of the filling tank, and second electric-controlled valves are respectively provided at both ends of the second three-way pipe.

[0011] As a preferred solution of the utility model, a plurality of electric hydraulic rods are fixedly mounted on the top surface of the base, and output ends of the plurality of electric hydraulic rods extend to the bottom of the base and are fixedly connected with pins.

[0012] As a preferred solution of the utility model, a drain pipe is fixedly sleeved on the bottom surface of the absorption tank, and the end of the drain pipe extends to the outside of the box body.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, a multi-stage electric push rod drives the movable seat and the suction head to extend outward, thereby driving the gas guide hose to stretch. In addition, the second motor drives the U-shaped frame and the suction head to rotate. At the same time, the first motor drives the first gear to rotate. The meshing transmission between the first gear and the second gear drives the rotating steel pipe, the rotating seat and the suction head to rotate, thereby placing the suction head at the upper corner to ensure effective gas extraction.

[0015] (2) In the utility model, a dual-axis motor is used to drive the driving wheel to rotate and drive the device to move, and a third motor is used to drive the steering wheel to rotate, thereby steering the moving device, thereby realizing the function of automatically moving the device. In addition, the stopped device can be fixed by the cooperation of the electric hydraulic rod and the pin, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the installation box of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the rotating steel pipe of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the rotating seat of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Box body; 2. Moving mechanism; 3. Dilution mechanism; 4. Air suction mechanism; 5. Filter box; 6. Bracket; 7. Rotating steel pipe; 8. Rotating seat; 9. Rotating joint; 10. Second gear; 11. First motor; 12. First gear; 13. Rotating frame; 14. U-shaped frame; 15. Multi-stage electric push rod; 16. Moving seat; 17. Suction head; 18. Air guide hose; 19. Second motor; 20. Base; 21. Moving frame; 22. Double-axis motor; 23. Transmission rod; 24. Drive wheel; 25. Mounting box; 26. Third motor; 27. Steering wheel; 28. Electric hydraulic rod; 29. ​​Pin; 30. Inert gas tank; 31. First three-way pipe; 32. First electric control valve; 33. First fan; 34. Second fan; 35. Second three-way pipe; 36. Second electric control valve; 37. Filling tank; 38. Absorption tank; 39. Treatment pipe; 40. Drain pipe. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example:

[0027] See also Figure 1-5 A movable gas extraction device for the corner of a tunnel working face comprises a box body 1, a movable mechanism 2 is arranged at the bottom of the box body 1, a dilution mechanism 3 is arranged in the inner cavity of the box body 1, an air suction mechanism 4 is arranged in the inner cavity of the box body 1, a filter box 5 is fixedly connected to the outer side of the box body 1, a bracket 6 is fixedly connected to the filter box 5 and the side of the box body 1, two brackets 6 are rotatably connected to rotating steel pipes 7 respectively, one end of the two rotating steel pipes 7 are fixedly sleeved with a rotating joint 9, an end of a rotating joint 9 is fixedly sleeved to the inner cavity of the filter box 5, the other ends of the two rotating steel pipes 7 are fixedly sleeved with a rotating seat 8, two rotating frames 13 are fixedly connected to the outer side of the rotating seat 8, a U-shaped frame 14 is rotatably connected between the two rotating frames 13, and the U A multi-stage electric push rod 15 is fixedly installed on the U-shaped frame 14, and the output end of the multi-stage electric push rod 15 extends to the outside of the U-shaped frame 14 and is fixedly connected to a moving seat 16. A suction head 17 is fixedly sleeved on the moving seat 16, and the tail end of the suction head 17 is fixedly connected to an air guide hose 18, and the end of the air guide hose 18 is connected to the other end of the rotating steel pipe 7. A second motor 19 is fixedly installed on the outside of a rotating frame 13, and the output shaft of the second motor 19 is connected to one end of the rotating shaft of the U-shaped frame 14. A second gear 10 is fixedly sleeved on the outside of the rotating steel pipe 7, and a first motor 11 is fixedly installed on the bracket 6. The output shaft of the first motor 11 is fixedly sleeved with a first gear 12, and the first gear 12 and the second gear 10 are meshed with each other.

[0028] In this embodiment, the inner cavity of the filter box 5 is provided with filter cotton.

[0029] For details, please refer to Figure 1 and Figure 2 The moving mechanism 2 includes a base 20 fixedly connected to the bottom surface of the box body 1, and two moving frames 21 are fixedly connected to the bottom surface of the base 20. The two moving frames 21 are rotatably connected with transmission rods 23, and the ends of the two transmission rods 23 are respectively fixedly sleeved with driving wheels 24. A double-axis motor 22 is fixedly installed on the bottom surface of the base 20, and the two output shafts of the double-axis motor 22 are respectively connected to the other ends of the two transmission rods 23. A mounting box 25 is fixedly connected to the bottom surface of the base 20, and a third motor 26 is fixedly installed in the inner cavity of the mounting box 25. The output shaft of the third motor 26 extends to the bottom of the mounting box 25 and is fixedly connected to a steering wheel 27.

[0030] For details, please refer to Figure 3The dilution mechanism 3 includes a first fan 33 fixedly mounted on the inner wall of the box body 1 and an inert gas tank 30 fixedly connected to the inner cavity of the box body 1. The output end of the first fan 33 is connected to the end of another rotary joint 9. The input end of the first fan 33 is fixedly connected to a first three-way pipe 31. One end of the first three-way pipe 31 is fixedly sleeved to the top of the box body 1, and the other end of the first three-way pipe 31 is fixedly sleeved to the inner cavity of the inert gas tank 30. First electric-controlled valves 32 are respectively provided at both ends of the first three-way pipe 31.

[0031] In this embodiment, the inner cavity of the inert gas tank 30 is provided with inert gas.

[0032] For details, please refer to Figure 3 The air suction mechanism 4 includes a second fan 34 fixedly installed on the inner wall of the box body 1 and a stuffing tank 37 and an absorption tank 38 fixedly connected to the inner cavity of the box body 1, a treatment pipe 39 is fixedly connected between the stuffing tank 37 and the absorption tank 38, an input end of the second fan 34 extends to the inner cavity of the filter box 5, an output end of the second fan 34 is fixedly connected to a second three-way pipe 35, one end of the second three-way pipe 35 extends to the outside of the box body 1, the other end of the second three-way pipe 35 is fixedly sleeved to the inner cavity of the stuffing tank 37, and second electric control valves 36 are respectively provided at both ends of the second three-way pipe 35.

[0033] In this embodiment, the inner cavity of the filling tank 37 is provided with lime particles, and the hydrogen sulfide gas in the gas is removed by the lime particles. The inner cavity of the absorption tank 38 is provided with an organic solvent, and the gas is absorbed by the organic solvent.

[0034] For details, please refer to Figure 2 A plurality of electric hydraulic rods 28 are fixedly mounted on the top surface of the base 20 , and output ends of the plurality of electric hydraulic rods 28 extend to the bottom of the base 20 and are fixedly connected with pins 29 .

[0035] In this embodiment, the electric hydraulic rod 28 is used to drive the pin 29 to move up and down, so that the pin 29 is automatically inserted into the tunnel ground to fix the device.

[0036] For details, please refer to Figure 3 A drain pipe 40 is fixedly sleeved on the bottom surface of the absorption tank 38 , and the end of the drain pipe 40 extends to the outside of the box body 1 .

[0037] In this embodiment, the used organic solvent in the absorption tank 38 is discharged through the drain pipe 40 .

[0038] Working principle: When in use, first start the dual-axis motor 22 to drive the driving wheel 24 to rotate, and use the driving wheel 24 to push the device to move. In addition, start the third motor 26 to drive the steering wheel 27 to rotate, so as to steer the movement of the device. When it moves to the vicinity of the upper corner, start the electric hydraulic rod 28 to drive the nail 29 to move downward, so that the bottom end of the nail 29 is inserted into the tunnel ground, thereby fixing the device, and then start the two first motors 11 to drive the two first gears 12 to rotate, and use the transmission between the first gear 12 and the second gear 10 to drive the rotating steel pipe 7, the rotating seat 8 and the suction head 17 to rotate. In addition, start the second motor 19 to drive the U-shaped frame 14 and the suction head 17 to rotate, and at the same time start the multi-stage electric push rod 15 to drive the moving seat 16 and the suction head 17 to move outward, so that the end of the suction head 17 is placed on the upper At the corner where gas gathers, a first electric-controlled valve 32 is controlled to connect the input end of the first fan 33 with the inner cavity of the inert gas tank 30, and the first fan 33 is started to make the first three-way pipe 31 generate suction, thereby extracting the inert gas in the inner cavity of the inert gas tank 30, and spraying it from a suction head 17 to the upper corner to dilute the gas, and finally the second fan 34 is started to make another suction head 17, the air guide hose 18 and the rotating steel pipe 7 generate suction, thereby drawing the gas into the inner cavity of the filter box 5, and filtering the gas by the filter surface of the inner cavity of the filter box 5, and the filtered gas enters the inner cavity of the filling tank 37, and the lime particles in the inner cavity of the filling tank 37 are used to remove the hydrogen sulfide gas in the gas, and the removed gas enters the absorption tank 38, and is treated with an organic solvent.

[0039] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A movable gas extraction device for a tunnel working face corner, comprising a box (1), characterized in that: The bottom of the box (1) is provided with a moving mechanism (2), the inner cavity of the box (1) is provided with a dilution mechanism (3), the inner cavity of the box (1) is provided with an air suction mechanism (4), the outer side of the box (1) is fixedly connected with a filter box (5), the filter box (5) and the side of the box (1) are fixedly connected with brackets (6), two brackets (6) are respectively rotatably connected with rotating steel pipes (7), one end of the two rotating steel pipes (7) is fixedly sleeved with a rotating joint (9), the end of one rotating joint (9) is fixedly sleeved to the inner cavity of the filter box (5), the other ends of the two rotating steel pipes (7) are fixedly sleeved with a rotating seat (8), the outer side of the rotating seat (8) is fixedly connected with two rotating frames (13), a U-shaped frame (14) is rotatably connected between the two rotating frames (13), and a U-shaped frame (14) is fixedly installed on the U-shaped frame (14). A multi-stage electric push rod (15), the output end of which extends to the outside of the U-shaped frame (14) and is fixedly connected to a moving seat (16), a suction head (17) is fixedly sleeved on the moving seat (16), the tail end of the suction head (17) is fixedly connected to an air guide hose (18), the end of the air guide hose (18) is connected to the other end of a rotating steel pipe (7), a second motor (19) is fixedly installed on the outside of one of the rotating frames (13), the output shaft of the second motor (19) is connected to one end of the rotating shaft of the U-shaped frame (14), a second gear (10) is fixedly sleeved on the outside of the rotating steel pipe (7), a first motor (11) is fixedly installed on the bracket (6), the output shaft of the first motor (11) is fixedly sleeved with a first gear (12), and the first gear (12) and the second gear (10) are meshed with each other.

2. A movable gas extraction device for the upper corner of a tunnel working face according to claim 1, characterized in that: The mobile mechanism (2) comprises a base (20) fixedly connected to the bottom surface of the box body (1); the bottom surface of the base (20) is fixedly connected to two mobile frames (21); the two mobile frames (21) are rotatably connected to transmission rods (23); the ends of the two transmission rods (23) are respectively fixedly sleeved with driving wheels (24); a double-axis motor (22) is fixedly installed on the bottom surface of the base (20); the two output shafts of the double-axis motor (22) are respectively connected to the other ends of the two transmission rods (23); the bottom surface of the base (20) is fixedly connected to a mounting box (25); the inner cavity of the mounting box (25) is fixedly installed with a third motor (26); the output shaft of the third motor (26) extends to the bottom of the mounting box (25) and is fixedly connected to a steering wheel (27).

3. A movable gas extraction device for the corner of a tunnel working face according to claim 1, characterized in that: The dilution mechanism (3) comprises a first fan (33) fixedly mounted on the inner wall of the box (1) and an inert gas tank (30) fixedly connected to the inner cavity of the box (1); the output end of the first fan (33) is connected to the end of another rotary joint (9); the input end of the first fan (33) is fixedly connected to a first three-way pipe (31); one end of the first three-way pipe (31) is fixedly sleeved to the top of the box (1); the other end of the first three-way pipe (31) is fixedly sleeved to the inner cavity of the inert gas tank (30); and first electric control valves (32) are respectively provided at both ends of the first three-way pipe (31).

4. A movable gas extraction device for the corner of a tunnel working face according to claim 1, characterized in that: The air suction mechanism (4) comprises a second fan (34) fixedly mounted on the inner wall of the box body (1) and a stuffing tank (37) and an absorption tank (38) fixedly connected to the inner cavity of the box body (1); a treatment pipe (39) is fixedly connected between the stuffing tank (37) and the absorption tank (38); an input end of the second fan (34) extends to the inner cavity of the filter box (5); an output end of the second fan (34) is fixedly connected to a second three-way pipe (35); one end of the second three-way pipe (35) extends to the outside of the box body (1); the other end of the second three-way pipe (35) is fixedly sleeved to the inner cavity of the stuffing tank (37); and second electric control valves (36) are respectively provided at both ends of the second three-way pipe (35).

5. A movable gas extraction device for the upper corner of a tunnel working face according to claim 2, characterized in that: A plurality of electric hydraulic rods (28) are fixedly mounted on the top surface of the base (20), and output ends of the plurality of electric hydraulic rods (28) extend to the bottom of the base (20) and are fixedly connected with pins (29).

6. A movable gas extraction device for the upper corner of a tunnel working face according to claim 4, characterized in that: A liquid discharge pipe (40) is fixedly sleeved on the bottom surface of the absorption tank (38), and the end of the liquid discharge pipe (40) extends to the outside of the box body (1).

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