Ventilation device for tunnel construction

Abstract

The utility model discloses a tunnel construction ventilation device, and particularly relates to the technical field of tunnel ventilation, the tunnel construction ventilation device comprises a jet fan arranged in a tunnel, the two ends of the jet fan are respectively and fixedly provided with a ventilation pipe, and the ends, away from the jet fan, of the two ventilation pipes are respectively and fixedly provided with a grid plate; the two mounting frames are fixedly arranged at the top end of the interior of the tunnel through bolts, a mounting plate is fixedly arranged at the bottom ends of the two mounting frames, and two first fixing frames are fixedly arranged at the outer ends of the jet fan and the ventilation pipe. The jet fan and the ventilation pipe are supported through the steel wire rope, then the steel wire rope is wound and unwound through the winding rod, the positions of the jet fan and the ventilation pipe can be conveniently adjusted, and then grid plates in the jet fan and the ventilation pipe can be conveniently cleaned or replaced; and the situation that climbing is needed in the cleaning or replacing process is avoided, and the difficulty and danger of cleaning or replacing work are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel ventilation, in particular to a tunnel construction ventilation device. Background Art

[0002] During tunnel construction, ventilation is an essential technical step, as it requires constant extraction of air from the tunnel to ensure freshness and reduce gas and dust levels. Tunnel ventilation is typically performed using jet fans, which exhaust stale air from the tunnel and allow fresh air from outside to enter through ventilation openings.

[0003] At present, when tunnel construction ventilation devices are actually used, most of them are directly fixed on the top of the tunnel, and grid plates are generally set on both sides of the ventilation pipe. The grid plates prevent gravel, dust or other objects from entering the ventilation pipe through the entrance and colliding with the fan blades inside the ventilation pipe, thereby damaging the fan. However, due to the high position of the ventilation device, it is more troublesome to clean or replace the grid plate or the inside of the fan. At this time, workers need to climb to work, which increases the difficulty and danger of the work. Utility Model Content

[0004] The purpose of this utility model is to provide a tunnel construction ventilation device to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tunnel construction ventilation device, comprising:

[0006] A jet fan is provided inside the tunnel, with a ventilation pipe fixedly provided at each end of the jet fan, and a grid plate fixedly provided at the end of each ventilation pipe away from the jet fan;

[0007] Two mounting frames are fixed to the top of the tunnel by bolts, and a mounting plate is fixed to the bottom of the two mounting frames. Two first fixing frames are fixed to the outer ends of the jet fans and ventilation pipes. The jet fans and ventilation pipes are arranged at the bottom of the mounting plates. A connecting plate is fixed to the top of the first fixing frame. Two communicating ports are provided on the mounting plate. The top of the connecting plate passes through the inside of the communicating ports and extends to the top of the mounting plate. A steel wire rope is fixed to the top of the connecting plate. A second fixing frame is fixed on both sides of the bottom end of the tunnel. A winding rod is rotatably connected to the inside of the second fixing frame, and one end of the steel wire rope is wound around the outer end of the winding rod.

[0008] Preferably, one end of the winding rod extends to the front side of the second fixed frame and is fixedly provided with a turntable, a fixing plate is fixed inside the turntable, and a limiting component is provided on the outside of the fixing plate to facilitate driving the winding rod to rotate.

[0009] Preferably, two limit rods are provided on the outer side of the fixed plate, and a plurality of limit grooves are opened at the front end of the second fixed frame. One end of the two limit rods passes through the fixed plate and extends into two of the limit grooves respectively. A movable plate is fixedly provided at the other end of the two limit rods. A threaded rod is provided in the middle part of the outer side of the movable plate. One end of the threaded rod passes through the middle of the movable plate and is rotatably connected to one end of the winding rod through a bearing. The threaded rod and the movable plate are connected by threads, and a rotating block is fixed at the other end of the threaded rod to facilitate limiting and fixing the winding rod.

[0010] Preferably, two guide plates are fixedly provided at the outer bottom end of the first fixed frame, two guide rails are fixedly provided on both sides of the inside of the tunnel, a guide groove is opened at one end of the guide plate, and the guide rail passes through the inside of the guide groove to facilitate guiding the first fixed frame, jet fan and ventilation pipe.

[0011] Preferably, two first redirecting rollers and two second redirecting rollers are rotatably connected between the two mounting frames, the second redirecting rollers are arranged on the outside of the first redirecting roller, and the first redirecting roller is arranged on the top of the connecting plate. One end of the wire rope passes around the outer ends of the first redirecting roller and the second redirecting roller to facilitate redirection of the wire rope.

[0012] Preferably, a third redirecting roller is rotatably connected between the top ends of the two guide rails located on the same side, and one end of the wire rope is passed around the outer end of the third redirecting roller to facilitate redirection of the wire rope.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] The jet fan and ventilation duct are supported by steel wire ropes, which are then retracted and released by winding rods. The positions of the jet fan and ventilation duct can be adjusted more conveniently, thereby facilitating the cleaning or replacement of the grid plates inside the jet fan and ventilation duct, and avoiding the need to climb during the cleaning or replacement process, thereby effectively reducing the difficulty and danger of the cleaning or replacement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

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

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the ventilation device of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the jet fan, ventilation pipe and first fixing frame of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the jet fan and ventilation pipe of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the second fixing frame, steel wire rope and turntable of the utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the second fixing frame and the winding rod of the utility model;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting component of the utility model.

[0023] Description of reference numerals:

[0024] 1. Tunnel; 2. Jet fan; 3. Ventilation duct; 4. Grid plate; 5. Mounting frame; 6. Mounting plate; 7. First fixed frame; 8. Connecting plate; 9. Connecting port; 10. Wire rope; 11. Second fixed frame; 12. Winding rod; 13. Turntable; 14. Fixed plate; 15. Limit rod; 16. Limit groove; 17. Movable plate; 18. Threaded rod; 19. Rotating block; 20. Guide plate; 21. Guide rail; 22. Guide groove; 23. First redirecting roller; 24. Second redirecting roller; 25. Third redirecting roller. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The utility model provides Figures 1 to 7 A tunnel construction ventilation device is shown, comprising:

[0027] A jet fan 2 is provided inside the tunnel 1. A ventilation pipe 3 is fixedly provided at each end of the jet fan 2. A grid plate 4 is fixedly provided at the end of each ventilation pipe 3 away from the jet fan 2.

[0028] Two mounting frames 5 are fixed at the top of the tunnel 1 by bolts, and a mounting plate 6 is fixed at the bottom of the two mounting frames 5. Two first fixing frames 7 are fixed to the outer ends of the jet fan 2 and the ventilation pipe 3. The jet fan 2 and the ventilation pipe 3 are arranged at the bottom of the mounting plate 6. A connecting plate 8 is fixed to the top of the first fixing frame 7. Two connecting ports 9 are provided on the mounting plate 6. The top of the connecting plate 8 passes through the inside of the connecting port 9 and extends to the top of the mounting plate 6. A steel wire rope 10 is fixed to the top of the connecting plate 8. A second fixing frame 11 is fixed on both sides of the bottom end of the tunnel 1. A winding rod 12 is rotatably connected inside the second fixing frame 11. One end of the steel wire rope 10 is wound around the outer end of the winding rod 12. One end of the winding rod 12 extends to the front side of the second fixing frame 11 and is fixed with a turntable 13. A fixing plate 14 is fixed inside the turntable 13, and a limiting component is provided on the outside of the fixing plate 14.

[0029] Two limiting rods 15 are provided on the outside of the fixed plate 14, and a plurality of limiting grooves 16 are opened at the front end of the second fixed frame 11. One end of the two limiting rods 15 passes through the fixed plate 14 and extends into two of the limiting grooves 16 respectively. A movable plate 17 is fixedly provided at the other end of the two limiting rods 15. A threaded rod 18 is provided in the middle part of the outer side of the movable plate 17. One end of the threaded rod 18 passes through the middle of the movable plate 17 and is rotatably connected to one end of the winding rod 12 through a bearing. The threaded rod 18 is connected to the movable plate 17 by threads, and a rotating block 19 is fixed at the other end of the threaded rod 18.

[0030] Two guide plates 20 are fixedly provided at the outer bottom end of the first fixing frame 7 , and two guide rails 21 are fixedly provided on both sides of the inside of the tunnel 1 . A guide groove 22 is formed at one end of the guide plate 20 , and the guide rail 21 passes through the inside of the guide groove 22 .

[0031] Two first redirecting rollers 23 and two second redirecting rollers 24 are rotatably connected between the two mounting frames 5. The second redirecting rollers 24 are arranged on the outside of the first redirecting roller 23. The first redirecting roller 23 is arranged on the top of the connecting plate 8. One end of the wire rope 10 passes around the outer ends of the first redirecting roller 23 and the second redirecting roller 24. A third redirecting roller 25 is rotatably connected between the top ends of the two guide rails 21 located on the same side. One end of the wire rope 10 passes around the outer end of the third redirecting roller 25.

[0032] The rotating block 19 is rotated, and the rotating block 19 drives the threaded rod 18 to rotate. Since the threaded rod 18 is threadedly connected to the movable plate 17, the movable plate 17 moves outward with the rotation of the threaded rod 18, and the movable plate 17 drives the two limit rods 15 to move outward. One end of the two limit rods 15 leaves the inside of two of the limit grooves 16. At this time, the turntable 13 is rotated, and the turntable 13 drives the winding rod 12 to rotate. The winding rod 12 releases the wire rope 10 wound on its outer end, and the jet fan 2 and the ventilation pipe 3 move downward under the action of their own gravity, so that the jet fan 2 and The ventilation pipe 3 is placed on the ground, and the grid plate 4 can be cleaned or replaced. After cleaning or replacement is completed, the turntable 13 is rotated in the opposite direction, and the turntable 13 drives the winding rod 12 to wind the wire rope 10. The wire rope 10 drives the connecting plate 8 and the first fixed frame 7 to move upward, and the first fixed frame 7 drives the jet fan 2 and the ventilation pipe 3 to move to the bottom end of the mounting plate 6. At this time, the rotating block 19 and the threaded rod 18 are rotated in the opposite direction, and the two limit rods 15 will be inserted into the two limit grooves 16 again, and then the first fixed frame 7, the jet fan 2 and the ventilation pipe 3 can be fixed.

[0033] The utility model supports the jet fan 2 and the ventilation pipe 3 by a steel wire rope 10, and then retracts and extends the steel wire rope 10 by a winding rod 12, which can adjust the position of the jet fan 2 and the ventilation pipe 3 more conveniently, thereby facilitating the cleaning or replacement of the grid plate 4 inside the jet fan 2 and the ventilation pipe 3, and avoids the need to climb during the cleaning or replacement process, effectively reducing the difficulty and danger of the cleaning or replacement work. This embodiment specifically solves the tunnel construction ventilation device existing in the prior art. In actual use, the ventilation device is mostly directly fixed at the top of the tunnel, and grid plates are generally provided on both sides of the ventilation pipe. The grid plates prevent gravel, dust or other objects from entering the interior through the entrance of the ventilation pipe and colliding with the fan blades inside the ventilation pipe, thereby causing damage to the fan. However, due to the high position of the ventilation device, it is more troublesome when the grid plate or the fan needs to be cleaned or replaced. At this time, workers need to climb to work, which increases the difficulty and danger of the work.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tunnel construction ventilation device, characterized in that: include: A jet fan (2) is provided inside the tunnel (1), wherein a ventilation pipe (3) is fixedly provided at both ends of the jet fan (2), and a grid plate (4) is fixedly provided at the ends of the two ventilation pipes (3) away from the jet fan (2); Two mounting frames (5) are fixed to the top of the interior of the tunnel (1) by bolts, and a mounting plate (6) is fixed to the bottom of the two mounting frames (5). Two first fixing frames (7) are fixed to the outer ends of the jet fan (2) and the ventilation pipe (3). The jet fan (2) and the ventilation pipe (3) are arranged at the bottom of the mounting plate (6). A connecting plate (8) is fixed to the top of the first fixing frame (7). Two communication ports (9) are provided on the mounting plate (6). The top of the connecting plate (8) passes through the inside of the communication port (9) and extends to the top of the mounting plate (6). A steel wire rope (10) is fixed to the top of the connecting plate (8). A second fixing frame (11) is fixed to both sides of the bottom of the interior of the tunnel (1). A winding rod (12) is rotatably connected to the inside of the second fixing frame (11), and one end of the steel wire rope (10) is wound around the outer end of the winding rod (12).

2. A tunnel construction ventilation device according to claim 1, characterized in that: One end of the winding rod (12) extends to the front side of the second fixed frame (11) and is fixedly provided with a turntable (13); a fixing plate (14) is fixedly provided inside the turntable (13); and a limiting assembly is provided outside the fixing plate (14).

3. A tunnel construction ventilation device according to claim 2, characterized in that: Two limiting rods (15) are provided on the outside of the fixed plate (14), and a plurality of limiting grooves (16) are provided on the front end of the second fixed frame (11). One end of the two limiting rods (15) passes through the fixed plate (14) and extends into two of the limiting grooves (16) respectively. A movable plate (17) is fixedly provided at the other end of the two limiting rods (15). A threaded rod (18) is provided at the middle of the outer side of the movable plate (17). One end of the threaded rod (18) passes through the middle of the movable plate (17) and is rotatably connected to one end of the winding rod (12) through a bearing. The threaded rod (18) is connected to the movable plate (17) through a thread. A rotating block (19) is fixedly provided at the other end of the threaded rod (18).

4. The tunnel construction ventilation device according to claim 1, characterized in that: Two guide plates (20) are fixedly provided at the bottom end of the outer side of the first fixed frame (7), two guide rails (21) are fixedly provided on both sides of the interior of the tunnel (1), a guide groove (22) is formed at one end of the guide plate (20), and the guide rail (21) passes through the interior of the guide groove (22).

5. The tunnel construction ventilation device according to claim 1, characterized in that: Two first redirecting rollers (23) and two second redirecting rollers (24) are rotatably connected between the two mounting frames (5), the second redirecting rollers (24) are arranged outside the first redirecting rollers (23), the first redirecting rollers (23) are arranged on the top of the connecting plate (8), and one end of the steel wire rope (10) is passed around the outer ends of the first redirecting rollers (23) and the second redirecting rollers (24).

6. The tunnel construction ventilation device according to claim 4, characterized in that: A third redirecting roller (25) is rotatably connected between the top ends of the two guide rails (21) located on the same side, and one end of the steel wire rope (10) passes around the outer end of the third redirecting roller (25).

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