Tunnel deformation joint waterproof plugging construction device

Abstract

The application discloses a tunnel deformation joint waterproof leaking stoppage construction device, which comprises a mobile lifting trolley with a telescopic arm, a rotating motor is fixedly installed on the telescopic arm, the telescopic arm drives the rotating motor to lift, a first telescopic rod and a second telescopic rod are installed on the main shaft of the rotating motor, the first telescopic rod and the second telescopic rod are arranged along the radial direction of the main shaft of the rotating motor, the main shaft of the rotating motor drives the first telescopic rod and the second telescopic rod to rotate, a stop plate is connected between the telescopic ends of the first telescopic rod and the second telescopic rod, a filling and expanding strip is arranged on the outer side of the stop plate, a groove cleaning motor is arranged on one side of the telescopic end of the second telescopic rod, and a rotary cutter is arranged on the main shaft of the groove cleaning motor; and the filling and expanding strip is filled through a filling device. The gel liquid can flow to the leaking area more easily, the waterproof leaking stoppage quality is improved, the construction process is simple, the labor intensity is small, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel waterproof plugging, in particular to a tunnel deformation joint waterproof plugging construction device. BACKGROUND

[0002] The tunnel deformation joint is designed to prevent the tunnel from deforming under the action of external factors, and is usually arranged at the boundary between soft and hard strata, the boundary between bright and dark holes, and the geological structure activity fracture section, and is an important detail structure of the tunnel. The waterproof treatment of the deformation joint is generally to arrange a waterproof layer between the lining and the surrounding rock or the primary support, and to arrange a buried water stop belt in the deformation joint. However, when the deformation joint position has a failed waterproof measure, the problem of deformation joint water leakage will occur.

[0003] The treatment of the deformation joint water leakage generally adopts the grouting method for plugging, and grouting material is injected into the inside of the deformation joint, and the slurry overflows to the inside wall of the tunnel, so that the slurry is not easy to penetrate into the inside of the leakage point, affecting the service life of the plugging construction, and new leakage is prone to occur subsequently.

[0004] Chinese patent CN2017105563389 discloses a deformation joint composite plugging and sealing system and a construction method thereof, which adopts a combination of a plugging agent and a gas bag type sealing for plugging. However, in actual construction, the grouting process does not consider whether the slurry is easy to penetrate into the inside of the leakage point, and only grouting to no water seepage cannot truly guarantee the plugging quality, and new leakage is still prone to occur subsequently. Moreover, the construction steps are not simple, and multiple punching and grouting are required at different positions, and the composite plugging structure is relatively complex.

[0005] Chinese patent CN2024107613166 discloses a repair structure for deformation joint leakage treatment and a construction method thereof, which solves the leakage problem by reinforcing and repairing the deep cracks of the concrete, and adopts a four-in-one method of outer waterproof, middle leakage channel plugging, inner sealing and reinforcement, and surface moisture and dew prevention, which is a long-term and stable solution to the brick wall leakage problem of the structure during operation. However, the tools used in the construction are relatively many and need manual operation, which is labor-intensive and low in efficiency. SUMMARY

[0006] The present application aims at the deficiencies of the prior art, and provides a tunnel deformation joint waterproof plugging construction device which can make the gel liquid flow more easily to the leakage area, improve the waterproof plugging quality, and is simple in construction process, low in labor intensity and high in efficiency.

[0007] In order to achieve the above object, the technical scheme adopted by the present application is: a tunnel deformation joint waterproof plugging construction device, comprising a mobile lifting trolley with a telescopic arm, a rotary motor is installed on the telescopic arm, the telescopic arm drives the rotary motor to lift, a first telescopic rod and a second telescopic rod are installed on the main shaft of the rotary motor, the first telescopic rod and the second telescopic rod are arranged along the radial direction of the main shaft of the rotary motor, the main shaft of the rotary motor drives the first telescopic rod and the second telescopic rod to rotate, a plugging plate is connected between the telescopic end of the first telescopic rod and the telescopic end of the second telescopic rod, the first telescopic rod, the second telescopic rod and the plugging plate enclose a fan-shaped frame, a filling and expanding strip is arranged on the outer side of the plugging plate, a groove cleaning motor is arranged on one side of the telescopic end of the second telescopic rod, a rotary cutter is arranged on the main shaft of the groove cleaning motor;

[0008] The filling and expanding strip is filled by a filling device;

[0009] The rotary cutter is in a stepped structure, and can cut a sunken cutting groove on both sides of the inner wall of the deformation joint at the leakage point;

[0010] The side of the filling and expanding strip away from the plugging plate is in a hammerhead structure, the filling and expanding strip can enter the cutting groove position through the deformation joint in the unfilled state, and then the filling and expanding of the filling and expanding strip can make the hammerhead structure match and engage in the cutting groove.

[0011] Based on the above, the filling device comprises a cylinder body which is open at one end and blocked at the other end, the cylinder body is arranged on one side of the first telescopic rod, a piston is slidably arranged in the cylinder body, a compression cavity of the cylinder body is formed between the piston and the blocked end of the cylinder body, the compression cavity of the cylinder body is in communication with the filling and expanding strip through a gas supply hose, a driving mechanism is arranged on the cylinder body, and the driving mechanism drives the piston to slide to press the gas or gel liquid in the compression cavity of the cylinder body into the filling and expanding strip.

[0012] Based on the above, the driving mechanism comprises a pull rod fixedly connected with the inner side of the piston, the other end of the pull rod penetrates through the blocked end of the cylinder body and is provided with a support plate, a magnet is arranged on the support plate, an electromagnet corresponding to the magnet is arranged on the outer cylinder of the cylinder body or the first telescopic rod, a sliding groove is arranged on one side of the telescopic part of the first telescopic rod in the axial direction, a sliding block is slidably arranged in the sliding groove, a first strong spring is connected between the sliding block and the inner wall of one end of the sliding groove, and the sliding block is fixedly connected with the support plate; initially, the electromagnet is electrified to adsorb the magnet, the first elastic spring is in an elastic deformation state, the electromagnet is de-energized to release the magnet during filling, the first elastic spring restores to the natural state to drive the pull rod to move outward, the pull rod drives the piston to slide to press the gas or gel liquid in the compression cavity of the cylinder body into the filling and expanding strip.

[0013] Based on the above, the cylinder is further provided with a locking mechanism for preventing the piston from retracting after the piston presses the gas or gel liquid in the compression cavity of the cylinder into the filling expansion strip.

[0014] Based on the above, the locking mechanism comprises a limiting rod fixedly connected to the outer side of the piston, the other end of the limiting rod is provided with a limiting through hole, the limiting rod is in close contact with the inner wall of the cylinder, the side of the cylinder is provided with an avoiding hole corresponding to the limiting rod, a plug rod is inserted into the avoiding hole, and a second strong spring is connected between the outer end of the plug rod and the outer side wall of the cylinder and surrounds the plug rod.

[0015] Based on the above, the locking mechanism comprises a ratchet plate fixedly connected to the outer side of the piston, the ratchet plate is uniformly provided with a ratchet groove on one side, the slope surface of the ratchet groove is located on the outer side of the vertical surface, the side of the cylinder is provided with an avoiding hole corresponding to the ratchet plate, a plug rod is inserted into the avoiding hole, a second strong spring is connected between the outer end of the plug rod and the outer side wall of the cylinder and surrounds the plug rod, the inner end of the plug rod is in wedge-shaped structure matched with the structure of the ratchet groove and is clamped in the ratchet groove, and the inner end of the plug rod and the ratchet groove cooperate to form a ratchet mechanism and only allow the ratchet plate to move towards the cylinder along with the piston.

[0016] Based on the above, the blocking plate is an arc-shaped elastic plate and protrudes outward, and the outer side of the blocking plate is provided with an elastic rubber layer.

[0017] Based on the above, the upper and lower ends of the blocking plate are respectively connected with a sleeve, the telescopic ends of the first telescopic rod and the second telescopic rod are respectively rotatably connected with a connecting column, and the two connecting columns are respectively and correspondingly inserted into the two sleeves.

[0018] Based on the above, the upper end of the filling expansion strip is provided with a profiled plug, and the profiled plug is matched with the entering hole formed by the starting end of the cutting groove cut by the rotary cutter.

[0019] Based on the above, the main shaft of the rotary motor is fixedly provided with a rotary seat, and the first telescopic rod and the second telescopic rod are fixedly connected to the rotary seat.

[0020] The present application has substantial characteristics and progress compared with the prior art, specifically, during operation, the mobile lifting trolley moves to the leakage area, the positions of the first telescopic rod and the second telescopic rod are adjusted, the foundation position is positioned by using a common laser measurement positioning method, that is, the distances from the upper and lower ends of the blocking plate to the inner wall of the tunnel are within the designed distance range, the rotating motor rotates with the first telescopic rod and the second telescopic rod through the rotating seat, the rotary cutter is inserted into the deformation joint first by the cleaning motor, after the rotary cutter completely enters the deformation joint, the rotary cutter cuts the cutting groove on both sides of the inner wall of the deformation joint by high-speed rotation, then the blocking plate completely adheres to the inner wall of the tunnel and covers the cutting groove, the filling expansion strip is filled and expanded after entering the position of the cutting groove through the deformation joint in a small state, the filling expansion strip is not easy to separate from the inner wall of the tunnel by the clamping of the hammer head structure and the cutting groove when the gelatinous liquid is injected into the deformation joint through the grouting pipe, the sealing is more compact, the gelatinous liquid flows more easily to the leakage area, thereby improving the waterproof and leakage blocking quality, the construction process is simple, the labor intensity is small, and the efficiency is high.

[0021] When the deformation joint is cleaned and the cutting groove is cut, the telescopic amounts of the first telescopic rod and the second telescopic rod are different, so that the blocking plate does not adhere to the inner wall of the tunnel at the beginning, which facilitates observation of whether the cleaning path of the deformation joint matches the deformation joint, and observation of whether the filling expansion strip can be blocked into the cutting groove according to the guide path of the rotary cutter, thereby ensuring the construction quality.

[0022] The present application does not need to use an air pump or a water pump to fill the filling expansion strip, so that the filling device structure is simplified, and by arranging the locking mechanism, the piston can be prevented from retracting after the gas or gelatinous liquid in the compression cavity of the cylinder is pressed into the filling expansion strip, so that when the gelatinous liquid is injected into the deformation joint, the extrusion of the gelatinous liquid on the filling expansion strip only causes the filling expansion strip to compress and deform to adhere to the cutting groove, and the piston does not retreat, thereby improving the effect of the filling expansion strip on blocking the cutting groove, and causing the injected gelatinous liquid to flow to the leakage area sufficiently. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the present application.

[0024] Figure 2 is a schematic diagram of the blocking plate completely adhering to the inner wall of the tunnel.

[0025] Figure 3 is a side view of the blocking plate and the inner wall of the tunnel when the rotary cutter cuts the cutting groove.

[0026] Figure 4is a sectional view of the invention for plugging the deformation joint.

[0027] Figure 5 is a schematic diagram of the first cutting groove method for cleaning the deformation joint of the invention.

[0028] Figure 6 is a schematic diagram of the second cutting groove method for cleaning the deformation joint of the invention.

[0029] Figure 7 is a structural schematic diagram of the filling device in embodiment 2 of the invention.

[0030] Figure 8 is a structural schematic diagram of the locking mechanism in embodiment 3 of the invention.

[0031] Figure 9 is a sectional view of the locking mechanism in embodiment 3 of the invention.

[0032] In the figure: 1. telescopic arm; 2. moving lifting trolley; 3. rotating motor; 4. rotating seat; 5. first telescopic rod; 6. second telescopic rod; 7. plugging plate; 8. filling expansion strip; 9. slot cleaning motor; 10. rotating cutter; 11. cutting groove; 12. hammer head structure; 13. profiled plug; 14. tunnel inner wall; 15. sleeve; 16. connecting column; 17. cylinder; 18. piston; 19. gas supply hose; 20. pull rod; 21. support plate; 22. suction magnet; 23. electromagnet; 24. limiting rod; 25. limiting through hole; 26. insertion rod; 27. second strong spring; 28. ratchet plate; 29. ratchet groove; 30. leakage area. DETAILED DESCRIPTION

[0033] The technical solutions of the invention are described in further detail below through specific embodiments.

[0034] Embodiment 1

[0035] As Figures 1 to 6As shown, a tunnel deformation joint waterproof leaking construction device, including a telescopic arm 1 with mobile lifting trolley 2 (prior art, specific structure and working principle will not be repeated), the telescopic arm 1 is installed with rotating motor 3, the telescopic arm 1 drives the rotating motor 3 lifting, the main shaft of the rotating motor 3 is fixedly installed with rotating seat 4, the rotating seat 4 is fixedly connected with first telescopic rod 5 and second telescopic rod 6, the first telescopic rod 5 and the second telescopic rod 6 are arranged along the radial direction of the main shaft of the rotating motor 3, the main shaft of the rotating motor 3 drives the first telescopic rod 5 and the second telescopic rod 6 to rotate through the rotating seat 4, the telescopic end of the first telescopic rod 5 and the telescopic end of the second telescopic rod 6 are connected with the baffle 7, the first telescopic rod 5, the second telescopic rod 6 and the baffle 7 form a sector, the outer side of the baffle 7 is provided with filling expansion strip 8, the telescopic end of the second telescopic rod 6 is provided with groove cleaning motor 9, the main shaft of the groove cleaning motor 9 is provided with rotary cutter 10;

[0036] The filling expansion strip 8 is filled by filling device;

[0037] The rotary cutter 10 is in step structure, which can cut into the cutting groove 11 on both sides of the deformation joint at the leakage point;

[0038] The side of the filling expansion strip 8 away from the baffle 7 is in hammer head structure 12, the filling expansion strip 8 can enter the cutting groove 11 position through the deformation joint in the unfilled state, and then the filling expansion strip 8 can make the hammer head structure 12 match and engage in the cutting groove 11.

[0039] The upper end of the filling expansion strip 8 is provided with a profiled plug 13, which is matched with the entering hole formed by the rotary cutter 10 cutting the starting end of the cutting groove 11.

[0040] According to the structural characteristics of the tunnel, the rotary cutter 10 has two ways of cleaning the deformation joint during the rotation of the first telescopic rod 5 and the second telescopic rod 6:

[0041] The first way of cleaning the deformation joint, such as Figure 5As shown, the elongation of the second telescopic rod 6 is greater than that of the first telescopic rod 5, and the elongation of the second telescopic rod 6 pushes the cleaning motor 9 and the rotary cutter 10 towards the inner wall 14 of the tunnel, so that the rotary cutter 10 first drills into the deformation joint, and after the rotary cutter 10 completely enters the deformation joint, the rotary motor 3 drives the first telescopic rod 5 and the second telescopic rod 6 to rotate, and at the same time, the rotary cutter 10 rotates at high speed under the drive of the cleaning motor 9, so that the cut groove 11 is cut into the inner wall of the deformation joint, the upper end of the cut groove 11 forms an access hole, the access hole is blocked by the profiling plug 13, and the thin diameter section of the rotary cutter 10 cleans the elastic blocking material in the deformation joint.

[0042] The second way to clean the deformation joint is as follows: Figure 6 As shown, the rotary cutter 10 is arc-shaped and cuts into the deformation joint, and the rotary cutter 10 gradually penetrates into the deformation joint during rotation, so that it is easier to enter the deformation joint. For this cleaning method, the use of the profiling plug 13 can also ensure the blocking effect.

[0043] Moreover, the first telescopic rod 5 and the second telescopic rod 6 have different telescopic amounts, so that the blocking plate 7 does not initially fit the inner wall 14 of the tunnel, which facilitates observation of whether the path of cleaning the deformation joint matches the deformation joint, and observation of whether the filling and expanding strip 8 can be blocked into the cut groove 11 according to the guide path of the rotary cutter 10, so as to ensure the construction quality.

[0044] Further, the upper and lower ends of the blocking plate 7 are respectively connected with a sleeve 15, the telescopic ends of the first telescopic rod 5 and the second telescopic rod 6 are respectively rotationally connected with a connecting column 16, and the two connecting columns 16 are respectively and correspondingly inserted into the two sleeves 15. In this way, the blocking plate 7 is convenient to replace, and if the walls on both sides of the deformation joint are not flat, the adaptive compensation is performed through the structure of the blocking plate 7, the blocking plate 7 is an arc-shaped elastic plate and protrudes outward, and the outer side of the blocking plate 7 is provided with an elastic rubber layer, so that the blocking plate 7 can adapt to the extrusion and lamination of the arc surface or the plane, reduce the overflow of the injected gel liquid in the deformation joint, and avoid that the gel liquid does not penetrate into the leakage area 30. In the embodiment, the blocking plate 7 is a steel plate. In other embodiments, the blocking plate 7 can also be other elastic plates.

[0045] In the working process of the embodiment, the mobile lifting trolley 2 is moved to the leakage area 30, the positions of the first telescopic rod 5 and the second telescopic rod 6 are adjusted, and the foundation position is positioned by using a common laser measurement positioning method, that is, the distances from the upper and lower ends of the blocking plate 7 to the tunnel inner wall 14 are within the designed distance range, the rotating motor 3 rotates the first telescopic rod 5 and the second telescopic rod 6 through the rotating seat 4, the rotary cutter 10 is driven by the rotary motor 9 to first insert into the deformation joint, after the rotary cutter 10 completely enters the deformation joint, the rotary cutter 10 rotates at high speed to cut the cutting groove 11 on the inner walls on both sides of the deformation joint, then the blocking plate 7 completely adheres to the tunnel inner wall 14 and covers the cutting groove 11, the filling and expanding strip 8 is in a small state and enters the position of the cutting groove 11 through the deformation joint, and then expands and fills, and is suitable for repairing long strip-shaped gaps and provides guidance, through the clamping of the hammer head structure 12 and the cutting groove 11, when the grouting pipe is used to inject the gel into the deformation joint, the filling and expanding strip 8 is not easy to separate from the tunnel inner wall 14, the cutting groove 11 is more compactly blocked, the gel is more easily flowed to the leakage area 30, the waterproof and leakage blocking quality is improved, the construction process is simple, the labor intensity is small, and the efficiency is high.

[0046] Embodiment 2

[0047] On the basis of the embodiment 1, as shown in the drawing, Figure 7 the filling device includes a barrel 17 with one end open and the other end blocked, the barrel 17 is arranged on one side of the first telescopic rod 5, a piston 18 is slidably arranged in the barrel 17, a compression cavity of the barrel 17 is formed between the piston 18 and the blocked end of the barrel 17, the compression cavity of the barrel 17 is in communication with the filling and expanding strip 8 through a gas supply hose 19, and the gas supply hose 19 penetrates through the blocking plate 7; a driving mechanism is arranged on the barrel 17, and the driving mechanism drives the piston 18 to slide to press the gas or the gel in the compression cavity of the barrel 17 into the filling and expanding strip 8.

[0048] The driving mechanism comprises a pull rod 20 fixedly connected with the inner side of the piston 18, the other end of the pull rod 20 is connected with a support plate 21, the other end of the support plate 21 is connected with a magnet 22, the outer cylinder of the first telescopic rod 5 is connected with an electromagnet 23 corresponding to the magnet 22, the electromagnet 23 can also be fixed on the cylinder 17, the telescopic part of the first telescopic rod 5 is provided with a sliding groove along the axial direction, the sliding groove is slidably provided with a sliding block, the sliding block and the inner wall of one end of the sliding groove are connected with a first strong spring, the sliding block is fixedly connected with the support plate 21; initially, the electromagnet 23 is energized to attract the magnet 22, the first elastic spring is in the elastic deformation state, when filling, the electromagnet 23 is de-energized to release the magnet 22, the first elastic spring restores to the natural state to drive the pull rod 20 to move outward, so that the pull rod 20 drives the piston 18 to slide to pressurize the gas or gel liquid in the compression cavity of the cylinder 17 into the filling and expanding strip 8.

[0049] The cylinder 17 is further provided with a locking mechanism for preventing the piston 18 from retracting after the piston 18 pressurizes the gas or gel liquid in the compression cavity of the cylinder 17 into the filling and expanding strip 8.

[0050] The locking mechanism comprises a limiting rod 24 fixedly connected with the outer side of the piston 18, the other end of the limiting rod 24 is provided with a limiting through hole 25, the limiting rod 24 is in close contact with the inner wall of the cylinder 17, the side of the cylinder 17 is provided with an avoiding hole corresponding to the limiting rod 24, the avoiding hole is inserted with a plug rod 26, the outer end of the plug rod 26 and the outer side wall of the cylinder 17 are connected with a second strong spring 27 sleeved on the plug rod 26; initially, the other end of the limiting rod 24 is out of the cylinder 17, the limiting rod 24 blocks the avoiding hole, when the limiting rod 24 moves with the piston 18 to the cylinder 17 to correspond to the limiting through hole 25 and the avoiding hole, the plug rod 26 is inserted into the limiting through hole 25 from the avoiding hole under the action of the second strong spring 27.

[0051] The filling device is simple in structure, and the filling expansion strip 8 is filled without using an air pump or a water pump. The electromagnet 23 is adsorbed to the magnet 22 at the beginning. After the rotary cutter 10 cuts the groove, the first telescopic rod 5 and the second telescopic rod 6 are used to make the blocking plate 7 adhere to the inner wall 14 of the tunnel. At this time, the filling expansion strip 8 is in an elongated strip structure, and can easily enter the cutting groove 11. After the blocking plate 7 adheres to the inner wall 14 of the tunnel, the electromagnet 23 is powered off to release the magnet 22. Under the action of the first elastic spring, the pull rod 20 drives the piston 18 to slide. The piston 18 pressurizes the gas or gel in the compression cavity of the cylinder 17 into the filling expansion strip 8. The filling expansion strip 8 expands, and the hammer head structure 12 is clamped and blocked in the cutting groove 11. When air is used, the filling expansion strip 8 can be repeatedly used. When gel is used, the filling expansion strip 8 remains in the deformation joint after the plugging is completed.

[0052] When the limiting through hole 25 on the limiting rod 24 corresponds to the avoiding hole after the piston 18 slides, the plug rod 26 is inserted into the limiting through hole 25 under the action of the second strong spring 27, and the limiting rod 24 is locked. When the gel is injected into the deformation joint, the gel will only make the filling expansion strip 8 compressively deform to adhere to the cutting groove 11, and will not make the piston 18 retreat, thereby improving the effect of the filling expansion strip 8 on blocking the cutting groove 11, and making the injected gel flow to the leakage area 30.

[0053] Embodiment 3

[0054] Different from embodiment 2, as shown in Figure 8 and Figure 9 The locking mechanism includes a ratchet plate 28 fixedly connected to the outer side of the piston 18. The ratchet plate 28 is uniformly provided with a ratchet groove 29 on one side. The slope surface of the ratchet groove 29 is located on the outer side of the vertical surface. The side of the cylinder 17 is provided with an avoiding hole corresponding to the ratchet plate 28. The plug rod 26 is inserted into the avoiding hole. The second strong spring 27 is connected between the outer end of the plug rod 26 and the outer side wall of the cylinder 17 and is sleeved on the plug rod 26. The inner end of the plug rod 26 is in a wedge-shaped structure matched with the structure of the ratchet groove 29 and is clamped and pressed in the ratchet groove 29. The inner end of the plug rod 26 and the ratchet groove 29 cooperatively form a ratchet mechanism and only allow the ratchet plate 28 to move with the piston 18 to the cylinder 17.

[0055] In the working process of the embodiment, the inner end of the insertion rod 26 is wedge-shaped and is clamped in the ratchet groove 29, the inner end of the insertion rod 26 cooperates with the ratchet groove 29 to form a ratchet mechanism and only allows the ratchet plate 28 to move with the piston 18 to the cylinder 17, thus the insertion rod 26 has a one-way locking function for the ratchet plate 28, when injecting the gel into the deformation joint, the extrusion of the gel on the filling and expanding strip 8 only makes the filling and expanding strip 8 compressively deform to fit the cutting groove 11, and does not make the piston 18 retreat, thereby improving the effect of the filling and expanding strip 8 on plugging the cutting groove 11, and making the injected gel fully flow to the leakage area 30.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, all of them should be covered in the technical solution range of the present application claimed.

Claims

1. A waterproofing and leak-sealing construction device for tunnel expansion joints, comprising a mobile lifting trolley with a telescopic arm, characterized in that: A rotary motor is installed on the telescopic arm, which drives the rotary motor to lift and lower. A first telescopic rod and a second telescopic rod are installed on the main shaft of the rotary motor. The first telescopic rod and the second telescopic rod are both arranged radially along the main shaft of the rotary motor. The main shaft of the rotary motor drives the first telescopic rod and the second telescopic rod to rotate. A blocking plate is connected between the telescopic ends of the first telescopic rod and the telescopic ends of the second telescopic rod. The first telescopic rod, the second telescopic rod and the blocking plate form a fan-shaped frame. A filling expansion strip is provided on the outside of the blocking plate. A cleaning motor is provided on one side of the telescopic end of the second telescopic rod. A rotary cutter is provided on the main shaft of the cleaning motor. The expansion bar is filled using a filling device; The rotary cutter has a stepped structure, which can cut recessed cutting grooves on both sides of the deformation joint at the leakage point. The side of the filling expansion strip away from the blocking plate has a hammer head structure. When the filling expansion strip is not filled, it can enter the cutting groove through the expansion joint. Then, when the filling expansion strip is filled and expanded, the hammer head structure can be matched and locked in the cutting groove.

2. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 1, characterized in that: The filling device includes a cylinder with one end open and the other end sealed. The cylinder is disposed on one side of the first telescopic rod. A piston is slidably disposed inside the cylinder. The piston and the sealed end of the cylinder together form a compression chamber of the cylinder. The compression chamber of the cylinder is connected to the filling expansion strip through a gas supply hose. A driving mechanism is provided on the cylinder. The driving mechanism drives the piston to slide and force the gas or gel in the compression chamber of the cylinder into the filling expansion strip.

3. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 2, characterized in that: The driving mechanism includes a pull rod fixedly connected to the inner side of the piston. The other end of the pull rod extends through the sealing end of the cylinder and is provided with a support plate. A magnet is provided on the support plate. An electromagnet corresponding to the magnet is provided on the outer cylinder of the cylinder or the first telescopic rod. A sliding groove is provided axially on one side of the telescopic part of the first telescopic rod. A slider slides in the sliding groove. A first strong spring is connected between the slider and the inner wall of one end of the sliding groove. The slider is fixedly connected to the support plate. Initially, the electromagnet is energized and attracts the magnet. The first strong spring is in an elastic deformation state. When filling, the electromagnet is de-energized and releases the magnet. The first strong spring returns to its natural state and drives the pull rod to move outward, so that the pull rod drives the piston to slide and force the gas or gel in the compression chamber of the cylinder into the filling expansion strip.

4. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 2 or 3, characterized in that: The cylinder is also provided with a locking mechanism to prevent the piston from retracting after the piston forces the gas or gel in the compression chamber of the cylinder into the filling expansion bar.

5. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 4, characterized in that: The locking mechanism includes a limiting rod fixedly connected to the outer side of the piston. The other end of the limiting rod is provided with a limiting through hole. The limiting rod fits against the inner wall of the cylinder. The side of the cylinder is provided with a clearance hole corresponding to the limiting rod. A rod is inserted into the clearance hole. A second strong spring is connected between the outer end of the rod and the outer side wall of the cylinder. Initially, the other end of the limiting rod protrudes from the cylinder, and the limiting rod covers the clearance hole. When the limiting rod moves with the piston towards the cylinder and the limiting through hole corresponds to the clearance hole, the rod is inserted into the limiting through hole through the clearance hole under the action of the second strong spring.

6. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 4, characterized in that: The locking mechanism includes a ratchet plate fixedly connected to the outer side of the piston. A ratchet groove is evenly provided on one side of the ratchet plate, and the slope of the ratchet groove is located outside its vertical surface. A clearance hole corresponding to the ratchet plate is provided on the side of the cylinder. A rod is inserted into the clearance hole. A second strong spring is connected between the outer end of the rod and the outer wall of the cylinder. The inner end of the rod has a wedge-shaped structure adapted to the structure of the ratchet groove and is pressed and locked in the ratchet groove. The inner end of the rod and the ratchet groove cooperate to form a ratchet mechanism and only allow the ratchet plate to move towards the cylinder with the piston.

7. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 5 or 6, characterized in that: The blocking plate is an arc-shaped elastic plate that bulges outward, and an elastic rubber layer is provided on the outer side of the blocking plate.

8. The tunnel expansion joint waterproofing and leak-sealing construction device according to claim 7, characterized in that: The upper and lower ends of the blocking plate are respectively connected to a sleeve, and the telescopic ends of the first telescopic rod and the second telescopic rod are respectively rotatably connected to a connecting post. The two connecting posts are respectively inserted into the two sleeves one by one.

9. The tunnel expansion joint waterproofing and leak-stopping construction device according to claim 1, 2, 5, 6 or 8, characterized in that: The upper end of the filling expansion strip is provided with a contour plug, which is adapted to the entry hole formed by the starting end of the rotary cutter cutting the cutting groove.

10. The tunnel expansion joint waterproofing and leak-stopping construction device according to claim 9, characterized in that: A rotating base is fixedly mounted on the main shaft of the rotary motor, and the first telescopic rod and the second telescopic rod are both fixedly connected to the rotating base.

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