A repairing device for a ventilation duct of a tunnel construction

Abstract

The application belongs to the technical field of pipeline repairing equipment, in particular to a repairing device for a ventilation air pipe in tunnel construction, comprising a ventilation pipe, both ends of the ventilation pipe are sleeved with rubber inflatable rings one, the top of the rubber inflatable ring one is communicated with the air outlet end of the air pump one, when the rubber inflatable ring one and the rubber inflatable ring two are installed on the ventilation pipe, the connecting motor is started to make the rubber inflatable ring two reciprocate on the ventilation pipe, so as to patrol the ventilation pipe and find the damaged part in time, when the ventilation pipe is damaged and leaks, the rubber inflatable ring two is only inflated to block and repair the damaged part, at the same time, an audible and visual signal is emitted to remind the personnel of the damaged ventilation pipe, so that the application can not only find and actively repair the damaged part of the pipeline in time, but also notify the personnel of the abnormal pipeline and facilitate the personnel to quickly determine the damaged abnormal part on the pipeline.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline repair equipment, specifically a repair device for ventilation ducts in tunnel construction. Background Technology

[0002] In tunnel construction, ventilation ducts are a crucial piece of equipment. Starting from the tunnel entrance, the ducts extend forward along the arch or crown of the tunnel, leading all the way to the frontmost excavation face. This is the "lifeline" that provides fresh air to the working face and dilutes dust and harmful gases.

[0003] Chinese Patent CN119532554B discloses a water pipeline repair device and method, belonging to the technical field of pipeline repair equipment. It includes a first arc-shaped plate, a second arc-shaped plate, and a valve. The first and second arc-shaped plates each have a hinged end and a connecting end. The hinged ends of the first and second arc-shaped plates are hinged together, and the connecting ends of the first and second arc-shaped plates are connected by bolts. The valve is connected to the outer wall of the first arc-shaped plate. The first arc-shaped plate has a water passage hole. A water bladder is provided on the inner wall of the first arc-shaped plate at the position corresponding to the valve, and the water bladder has a clearance space for avoiding the water passage hole. The water bladder has a water pipe, which is detachably connected to the valve. In the initial state, the inside of the water bladder is under negative pressure, and the valve is closed. Through the above-mentioned settings of this application, the amount of water sprayed out during the tightening of bolts can be reduced. Compared with the repair methods in the prior art, this application can save water resources.

[0004] When using the above invention, personnel need to actively discover the damaged parts of the pipeline and manually install the repair device at the site of the leak to repair the damage. Therefore, the present invention has the problem of making it difficult to actively discover the damaged parts of the pipeline and repair them, which causes great inconvenience to personnel during use.

[0005] Therefore, the present invention provides a repair device for ventilation ducts in tunnel construction. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a repair device for ventilation duct in tunnel construction according to the present invention includes a ventilation duct, both ends of which are fitted with rubber air rings, the top of the rubber air rings is connected to the air outlet of an air pump, and a controller is provided inside the rubber air rings.

[0008] The upper and lower sides of the rubber inflatable ring are fitted with semicircular plates. A connecting motor is fixedly connected to the side of the semicircular plate away from the rubber inflatable ring. A connecting block is fixedly connected to the side of a pair of opposite semicircular plates in the vertical direction. The same threaded pipe is threaded between a pair of opposite connecting blocks in the vertical direction.

[0009] A mounting block is fixedly connected to the output end of the connecting motor. A disassembly block is threadedly connected to the side of the mounting block away from the connecting motor. A spool is fixedly connected to the side of the disassembly block away from the mounting block. One end of a traction rope is fixedly connected to the surface of the spool.

[0010] The surface of the ventilation pipe is fitted with a second rubber inflation ring, and a first rubber cover is fixedly connected to the outside of the second rubber inflation ring. The upper and lower sides of the first rubber cover are threaded with threaded seats, and the outside of the threaded seats is fixedly connected to the other end of the traction rope.

[0011] The rubber cover is equipped with an air pump and a controller inside, and the air outlet of the air pump is connected to the rubber inflation ring.

[0012] A leak sensor is fixedly connected to the inner wall of the second rubber inflatable ring, and an alarm is fixedly connected to a symmetrical position on the outer side of the first rubber cover.

[0013] Preferably, a nozzle is fixedly connected to a symmetrical position on the outer side of the rubber cover, the air inlet of the nozzle is connected to the air outlet of the air pump, and a switch valve is provided on the nozzle.

[0014] Preferably, the ventilation pipe has reinforcement holes on both the upper and lower sides, and the inner wall of the rubber inflatable ring is fixedly connected with a reinforcement block that matches the reinforcement hole.

[0015] Preferably, a blocking block is fixedly connected to the end of the spool away from the disassembly block, and the outer diameter of the blocking block is larger than the outer diameter of the spool.

[0016] Preferably, connecting strips are fixedly connected to symmetrical positions on the outer side of the first rubber cover, and the same second rubber cover is fixedly connected to the side of the pair of connecting strips away from the first rubber cover. Electric push rods are fixedly connected to the inner bottom wall and inner top wall of the second rubber cover, and the same rubber ring is fixedly connected to the output end of the first electric push rod.

[0017] Preferably, a fixing frame is fixedly connected to the side of the rubber ring, a cleaning motor is fixedly connected to the bottom of the fixing frame, a cleaning strip is fixedly connected to the output end of the cleaning motor, the bottom of the cleaning strip abuts against the surface of the ventilation pipe, a cleaning air pump is fixedly connected inside the second rubber cover, and circular grooves are provided at symmetrical positions on the inner wall of the second rubber cover. One end of a rubber inflation strip is fixedly connected to the inner wall of the circular groove, the air outlet of the cleaning air pump is connected to the air inlet of the rubber inflation strip, and the same scraper is fixedly connected between a pair of rubber inflation strips.

[0018] Preferably, the inner wall of the second rubber cover is provided with a collection hole, and the bottom of the second rubber cover is fixedly connected to a collection box by bolts.

[0019] Preferably, warning lights are fixedly connected to both sides of the collection box, and a detection sensor and a controller are installed inside the collection box. The warning lights and the detection sensor are electrically connected to the controller via wires.

[0020] Preferably, a semi-circular block is fixedly connected to each of the two sides of the collection box, an electric push rod is fixedly connected to the bottom of the semi-circular block, a lifting block is fixedly connected to the telescopic end of the electric push rod, a sponge strip is fixedly connected to the side of the lifting block near the collection box, and the side of the sponge strip away from the lifting block abuts against the side of the collection box.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention relates to a repair device for ventilation ducts in tunnel construction. In use, after installing rubber inflatable ring one and rubber inflatable ring two on the ventilation duct, the connecting motor is started, causing rubber inflatable ring two to move back and forth on the ventilation duct, thereby inspecting the ventilation duct and promptly identifying any damage. When the ventilation duct is damaged and leaking air, simply inflating rubber inflatable ring two to seal and repair the damage. Simultaneously, an audible and visual signal is emitted to alert personnel to the ventilation duct damage. Therefore, the present invention not only promptly detects and proactively repairs pipe damage but also notifies personnel of pipe abnormalities and facilitates quick identification of any abnormalities on the pipe.

[0023] 2. The present invention provides a repair device for ventilation ducts in tunnel construction. During the process of using rubber rings to remove dust and foreign objects adhering to the outside of the ventilation duct, a cleaning motor is activated, causing its output end to drive a cleaning strip to rotate on the outside of the ventilation duct. This sweeps away the foreign objects and dust accumulated at the top of the ventilation duct, preventing dust and foreign objects from accumulating there. Afterwards, a cleaning air pump is activated to inflate the rubber air strip, causing it to expand and move within the annular groove. This pushes the scraper to remove and consolidate the dust and foreign objects falling onto the inner wall of the second rubber cover, thereby improving the cleanliness of the inner wall of the second rubber cover. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is an overall perspective view of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of section A in the image;

[0027] Figure 3 This is a partial schematic diagram of the ventilation duct in this invention;

[0028] Figure 4 This is a schematic diagram of the reinforcing block in this invention;

[0029] Figure 5 This is a schematic diagram of the rubber cover in this invention;

[0030] Figure 6 This is a schematic diagram of the semicircular plate in this invention;

[0031] Figure 7 This is a schematic diagram of the rubber cover II in this invention;

[0032] Figure 8 yes Figure 7 A magnified view of section B in the image.

[0033] In the diagram: 1. Ventilation duct; 2. Rubber inflatable ring one; 3. Semicircular plate; 4. Connecting motor; 5. Connecting block; 6. Threaded pipe; 7. Mounting block; 8. Disassembly block; 9. Bollard; 10. Traction rope; 11. Rubber inflatable ring two; 12. Threaded seat; 13. Rubber cover one; 14. Alarm; 15. Nozzle; 16. Reinforcing block; 17. Shielding block; 18. Connecting strip; 19. Rubber cover two; 20. Electric push rod one; 21. Rubber ring; 22. Fixing frame; 23. Cleaning motor; 24. Sweeping strip; 25. Circular groove; 26. Rubber inflatable strip; 27. Scraper strip; 28. Collection hole; 29. ​​Collection box; 30. Warning light; 31. Semicircular block; 32. Electric push rod two; 33. Lifting block; 34. Sponge strip. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1: As Figures 1 to 6 As shown in the embodiment of the present invention, a repair device for a ventilation duct in tunnel construction includes a ventilation duct 1, both ends of which are fitted with rubber inflation rings 2. The top of the rubber inflation rings 2 is connected to the air outlet of an air pump 1, and a controller is installed inside the rubber inflation rings 2.

[0036] The upper and lower sides of the rubber inflatable ring 2 are fitted with semicircular plates 3. A connecting motor 4 is fixedly connected to the side of the semicircular plate 3 away from the rubber inflatable ring 2. A connecting block 5 is fixedly connected to the side of a pair of opposite semicircular plates 3 in the vertical direction. The same threaded pipe 6 is threadedly connected between a pair of opposite connecting blocks 5 in the vertical direction.

[0037] A mounting block 7 is fixedly connected to the output end of the connecting motor 4. A disassembly block 8 is threadedly connected to the side of the mounting block 7 away from the connecting motor 4. A spool 9 is fixedly connected to the side of the disassembly block 8 away from the mounting block 7. One end of a traction rope 10 is fixedly connected to the surface of the spool 9.

[0038] The surface of the ventilation pipe 1 is fitted with a rubber inflation ring 2 11. A rubber cover 13 is fixedly connected to the outside of the rubber inflation ring 2 11. Threaded seats 12 are threadedly connected to both the upper and lower sides of the rubber cover 13. The outside of the threaded seats 12 is fixedly connected to the other end of the traction rope 10.

[0039] The rubber cover 13 is equipped with an air pump 2 and a controller inside, and the air outlet of the air pump 2 is connected to the rubber inflation ring 11.

[0040] A leak sensor is fixedly connected to the inner wall of the second rubber inflatable ring 11, and an alarm 14 is fixedly connected to each of the symmetrical positions on the outer side of the first rubber cover 13.

[0041] In the existing technology, existing pipeline repair devices require personnel to actively discover the pipeline damage and manually install them at the pipeline damage and leakage point to repair the pipeline damage. Therefore, the present invention has the problem of difficulty in actively discovering pipeline damage and leakage points and actively repairing the damage, which brings great inconvenience to personnel when using it.

[0042] The present invention is used in the following steps:

[0043] Step 1: Installation. Place the rubber inflatable ring 11 onto the ventilation pipe 1, then place a pair of rubber inflatable rings 2 onto both ends of the ventilation pipe 1 (e.g., ...). Figure 1 (As shown), then the semi-circular plate 3 is placed over the outside of the rubber air ring 2, and finally the threaded tube 6 is installed in a pair of connecting blocks 5 in the vertical direction to press and fix the rubber air ring 2 onto the ventilation tube 1.

[0044] Then, depending on the outer diameter of the ventilation pipe 1, air pump one and air pump two can be started to make the inner walls of rubber air ring one 2 and rubber air ring two 11 abut against the outer side of the ventilation pipe 1, thereby improving the stability of rubber air ring one 2 and rubber air ring two 11 on the ventilation pipe 1. Then, rubber air ring one 2 and rubber air ring two 11 can be installed on ventilation pipes 1 with different outer diameters, which has a wide range of applications.

[0045] Then, install the disassembly block 8 on the mounting block 7, and install the threaded seat 12 on the rubber cover 13, so that the traction rope 10 can be installed between the connecting motors 4 located in the horizontal direction.

[0046] Step 2: When in use, start one pair of vertical connecting motors 4, so that their output ends drive the disassembly block 8 and the spool 9 to rotate together, so as to take in the traction rope 10 wound on the spool 9. At the same time, start another pair of vertical connecting motors 4, so that their output ends drive the disassembly block 8 and the spool 9 to rotate together, so as to release the traction rope 10 wound on the spool 9. This causes the traction rope 10 to pull the rubber inflation ring 11 and the rubber cover 13 to move together on the ventilation pipe 1, so as to inspect the surface of the ventilation pipe 1 and find any damage in time. Then repeat the above steps to make the rubber inflation ring 11 and the rubber cover 13 move back and forth on the ventilation pipe 1.

[0047] As the rubber inflation ring 11 moves on the ventilation pipe 1, when the air leakage sensor detects a break in the ventilation pipe 1, the controller will start the air pump 2 to inflate the rubber inflation ring 11, causing it to expand and then use it to squeeze and seal the break in the ventilation pipe 1, thereby sealing and repairing the break.

[0048] When repairing the damaged part of ventilation duct 1, the alarm 14 is activated by the controller to send out an audible and visual signal to remind the construction personnel so that they can promptly detect the abnormality at this point in ventilation duct 1.

[0049] In summary, when using this invention, after installing the rubber inflation ring 11 and the rubber inflation ring 21 on the ventilation pipe 1, the connecting motor 4 is started, causing the rubber inflation ring 211 to move back and forth on the ventilation pipe 1, thereby inspecting the ventilation pipe 1 and promptly detecting any damage. When the ventilation pipe 1 is damaged and leaking air, simply inflate the rubber inflation ring 211 to seal and repair the damage. At the same time, an audible and visual signal will be emitted to alert personnel to the damage to the ventilation pipe 1. Therefore, this invention can not only promptly detect and proactively repair pipe damage, but also notify personnel of pipe abnormalities and facilitate quick identification of any abnormalities on the pipe.

[0050] like Figure 5 As shown, nozzles 15 are fixedly connected at symmetrical positions on the outer side of the rubber cover 13. The air inlet of the nozzle 15 is connected to the air outlet of the air pump 2. The nozzle 15 is equipped with a switch valve. In use, the switch valve can be opened and the air pump 2 can be turned on periodically by the controller so that the air pump 2 can generate gas. The generated gas is sprayed from the nozzle 15 onto the alarm 14, thereby cleaning the surface of the alarm 14 and improving its cleanliness.

[0051] like Figure 6 As shown, the ventilation pipe 1 has reinforcement holes on both the upper and lower sides. The inner wall of the rubber inflatable ring 2 is fixedly connected with a reinforcement block 16 that matches the reinforcement hole. When the inside of the rubber inflatable ring 2 abuts against the outside of the ventilation pipe 1, the reinforcement block 16 will enter the reinforcement hole on the surface of the ventilation pipe 1. The reinforcement block 16 is used to limit the rubber inflatable ring 2 and prevent it from rotating on the ventilation pipe 1.

[0052] like Figure 4 As shown, a blocking block 17 is fixedly connected to one end of the spool 9 away from the disassembly block 8. The outer diameter of the blocking block 17 is larger than the outer diameter of the spool 9. When the spool 9 winds up the traction rope 10, the blocking block 17 is used to block the traction rope 10 so that the traction rope 10 is not easily moved off the spool 9.

[0053] like Figure 3As shown, connecting strips 18 are fixedly connected to symmetrical positions on the outer side of the rubber cover 13. The same rubber cover 19 is fixedly connected to the side of the pair of connecting strips 18 away from the rubber cover 13. Electric push rods 20 are fixedly connected to the inner bottom wall and inner top wall of the rubber cover 19. The same rubber ring 21 is fixedly connected to the output end of the electric push rod 20.

[0054] Activate the electric push rod 20, causing its telescopic end to push the rubber ring 21, so that the inner wall of the rubber ring 21 applies a certain pressure to the outside of the ventilation pipe 1. At the same time, it allows the rubber ring 21 to move on the ventilation pipe 1. As the rubber inflation ring 11 moves on the ventilation pipe 1, the rubber cover 13 will drive the rubber cover 19 and the rubber ring 21 to move together on the ventilation pipe 1. The rubber ring 21 is used to push away the dust and foreign objects attached to the outside of the ventilation pipe 1, thereby improving the cleanliness of the surface of the ventilation pipe 1.

[0055] Example 2: Figure 7 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a fixing frame 22 is fixedly connected to the side of the rubber ring 21, a cleaning motor 23 is fixedly connected to the bottom of the fixing frame 22, a cleaning strip 24 is fixedly connected to the output end of the cleaning motor 23, the bottom of the cleaning strip 24 abuts against the surface of the ventilation pipe 1, a cleaning air pump is fixedly connected inside the rubber cover 29, and annular grooves 25 are provided at symmetrical positions on the inner wall of the rubber cover 29. One end of a rubber inflation strip 26 is fixedly connected to the inner wall of the annular groove 25, the air outlet of the cleaning air pump is connected to the air inlet of the rubber inflation strip 26, and the same scraper 27 is fixedly connected between a pair of rubber inflation strips 26.

[0056] When using this invention, while the rubber ring 21 is used to push away the dust and foreign objects attached to the outside of the ventilation pipe 1, the cleaning motor 23 is started, so that its output end drives the cleaning strip 24 to rotate on the outside of the ventilation pipe 1, so as to sweep away the foreign objects and dust attached to the top of the ventilation pipe 1, thereby sweeping off the dust and foreign objects on the top of the ventilation pipe 1, and thus making it less likely for dust and foreign objects to accumulate on the top of the ventilation pipe 1.

[0057] Then, the cleaning air pump can be started to inflate the rubber air strip 26, causing the rubber air strip 26 to expand and elongate, and move within the annular groove 25, thereby pushing the scraper 27 to scrape and consolidate the dust and foreign objects that fall on the inner wall of the rubber cover 29, thereby improving the cleanliness of the inner wall of the rubber cover 29.

[0058] like Figure 7As shown, a collection hole 28 is provided on the inner wall of the second rubber cover 19. A collection box 29 is fixedly connected to the bottom of the second rubber cover 19 by bolts. Dust and foreign objects falling from the ventilation pipe 1, as well as foreign objects and dust scraped and integrated by the scraper 27, will pass through the collection hole 28 and enter the collection box 29 for temporary storage, so as to facilitate the collection of dust and foreign objects by personnel.

[0059] like Figure 8 As shown, warning lights 30 are fixedly connected to both sides of the collection box 29. The collection box 29 is equipped with a detection sensor and a controller. The warning lights 30 and the detection sensor are electrically connected to the controller through wires. When a certain amount of dust and foreign objects are collected in the collection box 29, the controller will activate the warning lights 30 to send a visual signal to remind personnel to remove the collection box 29 in time and deal with the dust and foreign objects inside.

[0060] like Figure 8 As shown, a semi-circular block 31 is fixedly connected to each of the two sides of the collection box 29. An electric push rod 32 is fixedly connected to the bottom of the semi-circular block 31. A lifting block 33 is fixedly connected to the telescopic end of the electric push rod 32. A sponge strip 34 is fixedly connected to the side of the lifting block 33 near the collection box 29. The side of the sponge strip 34 away from the lifting block 33 abuts against the side of the collection box 29. A controller is provided on the semi-circular block 31. In use, the controller can be used to periodically start the electric push rod 32, so that its telescopic end pushes the lifting block 33 and the sponge strip 34 down together. The sponge strip 34 is used to wipe the warning light 30 to improve its cleanliness.

[0061] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0062] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A repair device for a ventilation duct in tunnel construction, comprising a ventilation duct (1), characterized in that: Both ends of the ventilation pipe (1) are fitted with rubber air rings (2), the top of the rubber air rings (2) is connected to the air outlet of the air pump, and a controller is installed inside the rubber air rings (2). The upper and lower sides of the rubber inflatable ring (2) are fitted with semicircular plates (3). A connecting motor (4) is fixedly connected to the side of the semicircular plate (3) away from the rubber inflatable ring (2). A connecting block (5) is fixedly connected to the side of a pair of opposite semicircular plates (3) in the vertical direction. The same threaded pipe (6) is threaded between a pair of opposite connecting blocks (5) in the vertical direction. A mounting block (7) is fixedly connected to the output end of the connecting motor (4). A disassembly block (8) is threadedly connected to the side of the mounting block (7) away from the connecting motor (4). A spool (9) is fixedly connected to the side of the disassembly block (8) away from the mounting block (7). One end of a traction rope (10) is fixedly connected to the surface of the spool (9). The surface of the ventilation pipe (1) is fitted with a rubber inflation ring two (11), and a rubber cover one (13) is fixedly connected to the outside of the rubber inflation ring two (11). Both the upper and lower sides of the rubber cover one (13) are threaded with thread seats (12), and the outside of the thread seats (12) is fixedly connected to the other end of the traction rope (10). The rubber cover (13) is equipped with an air pump (2) and a controller. The air outlet of the air pump (2) is connected to the rubber inflation ring (2) (11). A leak sensor is fixedly connected to the inner wall of the second rubber inflatable ring (11), and an alarm (14) is fixedly connected to the symmetrical position on the outer side of the first rubber cover (13).

2. The repair device for a tunnel construction ventilation duct according to claim 1, characterized in that: Spray nozzles (15) are fixedly connected at symmetrical positions on the outside of the rubber cover (13). The air inlet of the spray nozzle (15) is connected to the air outlet of the air pump (2). A switch valve is provided on the spray nozzle (15).

3. The repair device for a tunnel construction ventilation duct according to claim 1, characterized in that: The ventilation pipe (1) has reinforcement holes on both the upper and lower sides, and the inner wall of the rubber inflatable ring (2) is fixedly connected with a reinforcement block (16) that matches the reinforcement hole.

4. The repair device for a tunnel construction ventilation duct according to claim 1, characterized in that: The end of the spool (9) away from the disassembly block (8) is fixedly connected to a shielding block (17), the outer diameter of which is larger than the outer diameter of the spool (9).

5. The repair device for a tunnel construction ventilation duct according to claim 1, characterized in that: Connecting strips (18) are fixedly connected to symmetrical positions on the outer side of the first rubber cover (13). The same second rubber cover (19) is fixedly connected to the side of the pair of connecting strips (18) away from the first rubber cover (13). Electric push rods (20) are fixedly connected to the inner bottom wall and inner top wall of the second rubber cover (19). The same rubber ring (21) is fixedly connected to the output end of the electric push rod (20).

6. The repair device for a tunnel construction ventilation duct according to claim 5, characterized in that: A fixing frame (22) is fixedly connected to the side of the rubber ring (21). A cleaning motor (23) is fixedly connected to the bottom of the fixing frame (22). A cleaning strip (24) is fixedly connected to the output end of the cleaning motor (23). The bottom of the cleaning strip (24) abuts against the surface of the ventilation pipe (1). A cleaning air pump is fixedly connected inside the second rubber cover (19). Circular grooves (25) are provided at symmetrical positions on the inner wall of the second rubber cover (19). One end of a rubber inflation strip (26) is fixedly connected to the inner wall of the circular groove (25). The air outlet of the cleaning air pump is connected to the air inlet of the rubber inflation strip (26). The same scraper (27) is fixedly connected between a pair of rubber inflation strips (26).

7. A repair device for a tunnel construction ventilation duct according to claim 5, characterized in that: The inner wall of the second rubber cover (19) is provided with a collection hole (28), and the bottom of the second rubber cover (19) is fixedly connected to a collection box (29) by bolts.

8. A repair device for a tunnel construction ventilation duct according to claim 7, characterized in that: Warning lights (30) are fixedly connected to both sides of the collection box (29). The collection box (29) is equipped with a detection sensor and a controller. The warning lights (30) and the detection sensor are electrically connected to the controller through wires.

9. A repair device for a tunnel construction ventilation duct according to claim 7, characterized in that: A semicircular block (31) is fixedly connected to each of the two sides of the collection box (29). An electric push rod (32) is fixedly connected to the bottom of the semicircular block (31). A lifting block (33) is fixedly connected to the telescopic end of the electric push rod (32). A sponge strip (34) is fixedly connected to the side of the lifting block (33) near the collection box (29). The side of the sponge strip (34) away from the lifting block (33) abuts against the side of the collection box (29).

Images