Tunnel lining defect reinforcing device and reinforcing method thereof

Abstract

The present application relates to the technical field of tunnel defect reinforcement, and particularly relates to a tunnel lining defect reinforcement device and a reinforcement method thereof; the device comprises a base; a fixing plate is installed on the upper end face of the base through a support plate; each of the fixing plates is symmetrically provided with a limiting plate; the limiting plates are in circular arc structures; the limiting plates are connected with the fixing plates through support plates; a filling mechanism is arranged between the two limiting plates; and a paving mechanism is arranged below the filling mechanism; the present application solves the problems of poor crack filling quality of epoxy resin paste and low efficiency of artificial punching and grouting in the reinforcement process of the current tunnel lining defects.

Description

Technical Field

[0001] This invention relates to the field of tunnel defect reinforcement technology, and in particular to a tunnel lining defect reinforcement device and method. Background Technology

[0002] Tunnel lining refers to the structure that uses reinforced concrete, steel plates and other building materials to line the surrounding rock of a tunnel. Due to changes in ambient temperature and humidity, as well as imperfect construction treatment, the concrete structure shrinks and deforms, which can easily lead to cracks. This reduces the overall load-bearing capacity of the concrete structure and thus creates safety hazards.

[0003] The current method of repairing tunnel lining slabs involves detecting cracks in the tunnel with a crack detector, drilling holes in the cracks, injecting epoxy resin grout into the holes to fill the gaps, and then solidifying to reinforce the tunnel lining. During drilling and grouting, manual high-altitude hand-held electric drills are often used to drill holes, and then a delivery pipe is dragged to inject grout into the drilled holes.

[0004] However, the current tunnel lining defects have the following main problems in the reinforcement process: 1. In the existing tunnel lining repair process, because the tunnel is an arched structure, some epoxy resin grout will drip from the cracks due to gravity during the grouting process, which will affect the reinforcement quality of the tunnel lining cracks and cause waste of epoxy resin grout.

[0005] 2. Manual drilling and grouting can easily cause physical fatigue and affect construction efficiency. In addition, workers are working at heights, which poses safety hazards. Summary of the Invention

[0006] In view of the above problems, this application provides an invention title to solve the technical problems of poor quality of epoxy resin grout filling cracks and low efficiency of manual drilling and grouting in related technologies.

[0007] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0008] The first aspect of this application provides a tunnel lining defect reinforcement device, including a base; a fixing plate is installed on the upper end surface of the base through a support plate, and a limiting plate is symmetrically arranged on the left and right sides of the fixing plate. The limiting plate has an arc-shaped structure and is connected to the fixing plate through a support plate. A filling mechanism is arranged between the two limiting plates, and a material spreading mechanism is arranged below the filling mechanism.

[0009] The filling mechanism includes an arc-shaped plate. An arc-shaped plate is slidably mounted on each of the two limiting plates. The arc-shaped plates are connected to the fixed plate via a connecting plate, and the connecting plate is rotatably engaged with the fixed plate via a pin. Two long plates are arranged between the two arc-shaped plates, and the two long plates are symmetrically distributed vertically. Square grooves are opened on the long plates. A cross plate is slidably mounted between the two long plates. A screw is threadedly mounted on the cross plate. The two ends of the screw are rotatably engaged with the two arc-shaped plates respectively. A circular hole is symmetrically opened at the front and back of the cross plate. A fixed rod and a material conveying pipe are slidably mounted in the two circular holes respectively. A drill bit is installed on the side of the fixed rod away from the axis of the limiting plate. A driving component for driving the material conveying pipe and the fixed rod is provided on the side of the cross plate close to the axis of the limiting plate.

[0010] As a preferred embodiment, the driving component includes a guide rod. A rectangular groove is formed in the middle of the fixed plate, and the guide rod is installed between the left and right inner walls of the rectangular groove. A first cylinder is provided on the side of the fixed rod away from the drill bit. The telescopic end of the first cylinder is rotatably connected to the fixed rod. A driven gear is installed on the fixed rod with a spline fit, and the driven gear is rotatably connected to the cross plate. A first motor is installed on the left side of the cross plate through a motor. A driving gear that meshes with the driven gear is installed on the output shaft of the first motor. A second cylinder is provided on the side of the feed pipe near the axis of the limiting plate, and the telescopic end of the second cylinder is connected to the feed pipe. Both the first and second cylinders are slidably fitted with the guide rod.

[0011] As a preferred embodiment, the material spreading mechanism includes a U-shaped plate. The upper end face of the base is equipped with the U-shaped plate. U-shaped slots are provided on both vertical sections of the U-shaped plate. A roller is placed on both U-shaped slots. Adhesive fabric with release film is wound on the roller. A No. 1 shaft plate is symmetrically arranged on the left and right inner walls of the rectangular slot. Two No. 1 rollers are rotatably installed between the No. 1 shaft plates. A No. 2 shaft plate is arranged on the left and right sides of the lower end face of the fixed plate. A No. 2 roller for winding the release film is rotatably installed between the No. 2 shaft plates. An extrusion component for pressing the adhesive fabric is provided at the lower part of the arc-shaped plate. A cutting component for cutting the adhesive fabric is provided between the extrusion component and the upper long plate.

[0012] As a preferred embodiment, the extrusion component includes a first-shaped plate, a groove is provided on the limiting plate along its circumferential direction, a first-shaped plate is slidably installed on the upper front surface of the fixing plate, the first-shaped plate passes through the groove and slides with the groove, a first pressure roller is installed between the horizontal sections of the first-shaped plate, a third cylinder is installed on the upper surface of the fixing plate, the telescopic end of the third cylinder is connected to the first-shaped plate, a second-shaped plate is provided above the first-shaped plate, the horizontal end of the second-shaped plate passes through the groove and the arc plate, and the horizontal section of the second-shaped plate slides with the arc plate, a second pressure roller is rotatably installed between the horizontal sections of the second-shaped plate, a rectangular plate is provided on the inner side of the second-shaped plate, the rectangular plate is connected to the arc plate, a fourth cylinder is installed on the side of the rectangular plate near the second pressure roller, the telescopic section of the fourth cylinder is connected to the vertical section of the second-shaped plate.

[0013] As a preferred embodiment, the cutting component includes a second screw, a guide rod and a second screw are provided at the lower part between the two arc-shaped plates, and the second screw is rotatably connected to the arc-shaped plates. A slider is slidably installed on the guide rod, and the slider is threadedly engaged with the second screw. A cutting blade is installed on the front side of the slider, and an electric gripper for clamping the adhesive fabric is installed on the opposite surfaces of the two arc-shaped plates.

[0014] As a preferred embodiment, the side of the conveying pipe away from the axis of the limiting plate has a frustum-shaped structure, and a sleeve is provided on the outside of the frustum-shaped section of the conveying pipe, and the sleeve has a frustum-shaped structure.

[0015] As a preferred embodiment, the outer circumferential wall of the first pressure roller is uniformly provided with protrusions along its circumferential direction.

[0016] The second aspect of this application provides a method for reinforcing tunnel lining defects, which is completed with the assistance of tunnel lining defect reinforcement equipment, including the following steps: S1. Laying guide rails inside the tunnel, then using an external crack detector to detect the location of tunnel cracks, and then installing the equipment on the rails and moving it into the tunnel.

[0017] S2. Move the equipment to the crack location and lay adhesive fabric at the crack using the material spreading mechanism.

[0018] S3. After the fabric is laid, check the location of the cracks again to determine the drilling points.

[0019] S4. After drilling the holes in S3 using a filling mechanism, inject epoxy resin slurry.

[0020] S5. After the crack filler has solidified, remove it from the equipment and then remove and level any excess material at the filler location.

[0021] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0022] I. The filling mechanism of this invention uses an external No. 3 motor and an external No. 3 pulley mechanism to drive the No. 2 screw to rotate, so that the cross plate can move left and right. With the rotation of the connecting plate, it can be moved and positioned to the required drilling position. In addition, with the help of the driving component, automatic drilling and grouting after drilling are realized, thereby reducing manual operation and improving construction efficiency.

[0023] Second, the material laying mechanism of this invention drives the arc plate to rotate through the rotation of the connecting plate, so as to attach the adhesive cloth to the inner wall of the tunnel, thereby preventing the overflow of epoxy resin grout during the grouting process, thus ensuring the amount of epoxy resin grout in the crack, improving the reinforcement effect of the crack, and at the same time avoiding the damage and blockage of the surrounding cracks during the drilling process, which would affect the injection of epoxy resin grout.

[0024] Third, the cutting component of this invention uses an electric gripper to release the adhesive fabric during material feeding, ensuring the normal operation of the material laying mechanism. At the same time, it clamps the adhesive fabric after the material is laid, making it convenient for cutting and easy to pull out for reuse later.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of this application.

[0028] Figure 2 for Figure 1 A second-view 3D structural diagram.

[0029] Figure 3 for Figure 1 Top view.

[0030] Figure 4 for Figure 3 Cross-sectional view in the MM direction (partially showing the support plate and adhesive fabric, concealing the base, U-shaped plate, and rollers).

[0031] Figure 5 for Figure 1 Enlarged view of the structure at point A in the middle.

[0032] Figure 6 for Figure 1 A schematic diagram of the third-person perspective stereoscopic structure.

[0033] Figure 7 for Figure 4 Enlarged view of the structure at point B in the middle.

[0034] Figure 8 for Figure 4 Enlarged view of the structure at point C.

[0035] Figure label:

[0036] 10. Base; 11. Support plate; 12. Fixing plate; 13. Limiting plate; 2. Filling mechanism; 20. Arc plate; 21. Connecting plate; 22. Long plate; 23. Cross plate; 24. No. 1 screw; 25. Fixing rod; 26. Conveying pipe; 260. Sleeve; 27. Drill bit; 28. Driving component; 280. Guide rod; 281. No. 1 cylinder; 282. Driven gear; 283. No. 1 motor; 284. Drive gear; 285. No. 2 cylinder; 3. Laying Material handling mechanism; 30. U-shaped plate; 31. Roller; 32. Adhesive fabric; 33. Release film; 34. Roller No. 1; 35. Roller No. 2; 36. Extrusion part; 360. U-shaped plate No. 1; 361. Pressure roller No. 1; 362. Cylinder No. 3; 363. U-shaped plate No. 2; 364. Pressure roller No. 2; 365. Rectangular plate; 366. Cylinder No. 4; 37. Cutting part; 370. Screw No. 2; 371. Slider; 372. Cutting knife; 373. Electric gripper. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] like Figure 1 As shown, a tunnel lining defect reinforcement device includes a base 10; a fixing plate 12 is installed on the upper end surface of the base 10 through a support plate 11, and a limiting plate 13 is symmetrically arranged on the left and right sides of the fixing plate 12. The limiting plate 13 has an arc-shaped structure and is connected to the fixing plate 12 through a support plate. A filling mechanism 2 is arranged between the two limiting plates 13, and a material spreading mechanism 3 is arranged below the filling mechanism 2.

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the material spreading mechanism 3 includes a U-shaped plate 30. The upper end face of the base 10 is equipped with the U-shaped plate 30. U-shaped slots are provided on both vertical sections of the U-shaped plate 30. A roller 31 is placed on both U-shaped slots. Adhesive fabric 32 with release film 33 is wound on the roller 31. A No. 1 shaft plate is symmetrically arranged on the left and right inner walls of the rectangular groove. Two No. 1 rollers 34 are rotatably installed between the No. 1 shaft plates. A No. 2 shaft plate is arranged on the left and right sides of the lower end face of the fixed plate 12. A No. 2 roller 35 for winding release film 33 is rotatably installed between the No. 2 shaft plates. An extrusion member 36 for pushing the adhesive fabric 32 is provided at the lower part of the arc plate 20. A cutting member 37 for cutting the adhesive fabric 32 is provided between the extrusion member 36 and the upper long plate 22.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, the extrusion member 36 includes a first shaped plate 360. A groove is formed on the limiting plate 13 along its circumferential direction. The first shaped plate 360 ​​is slidably mounted on the upper front surface of the fixing plate 12. The first shaped plate 360 ​​passes through the groove and slides with it. A first pressure roller 361 is installed between the horizontal sections of the first shaped plate 360. A third cylinder 362 is installed on the upper surface of the fixing plate 12. The telescopic end of the third cylinder 362 is connected to the first shaped plate 360. A second cylinder 361 is positioned above the first shaped plate 360. The horizontal end of the second C-shaped plate 363 passes through the slide groove and the arc plate 20, and the horizontal section of the second C-shaped plate 363 slides with the arc plate 20. The second pressure roller 364 is rotatably installed between the horizontal sections of the second C-shaped plate 363. A rectangular plate 365 is provided on the inner side of the second C-shaped plate 363. The rectangular plate 365 is connected to the arc plate 20. A fourth cylinder 366 is installed on the side of the rectangular plate 365 near the second pressure roller 364. The telescopic section of the fourth cylinder 366 is connected to the vertical section of the second C-shaped plate 363.

[0041] In practice, a track is laid manually inside the tunnel. An external crack detector is used to locate the cracks. The adhesive fabric 32 is then manually passed between two rollers 34, then over rollers 364 and 361, and secured with a cutter 37. The release film 33 is torn open, passed around roller 34 near the axis of the limiting plate 13, and then secured to roller 35. The invention is then installed on the track and moved along the track to the crack location, where it is secured. Next, cylinder 362 pushes the first molded plate 360 ​​towards the tunnel wall, causing roller 361 to press the adhesive fabric 32, fixing it to the tunnel wall. Then, cylinder 366 pulls the second molded plate 363 towards the tunnel wall. Near the tunnel interior, the second pressure roller 364 presses the adhesive fabric 32 against the tunnel wall. Then, the external second motor, mounted on the fixed plate 12, drives the pin shaft to rotate via the external second belt pulley mechanism. The pin shaft drives the connecting plate 21 to rotate, causing the second roller 35 to rotate along the circumferential direction of the tunnel, so that the adhesive fabric 32 adheres to the tunnel for later filling mechanism 2 construction. Then, the adhesive fabric 32 is released and pressed against the tunnel wall by the second pressure roller 364. At the same time, the external fifth motor is mounted on the second shaft plate to drive the second roller 35. The second roller 35 will roll up the release film 33 as the adhesive fabric 32 is released, so that the adhesive part of the adhesive fabric 32 can be exposed to adhere to the tunnel wall. After the adhesive fabric 32 is laid, it is cut by the cutting piece 37.

[0042] like Figure 4 As shown, the outer circumferential wall of the first pressure roller 361 is uniformly provided with protrusions (not shown in the figure) along its circumferential direction; in specific operation, the protrusions can increase the friction between the first pressure roller 361 and the fabric to ensure the stability of the adhesive fabric 32 during the laying process.

[0043] like Figure 1 and Figure 5 As shown, the cutting component 37 includes a second screw 370. A guide rod and the second screw 370 are provided at the lower part between the two arc-shaped plates 20. The second screw 370 is rotatably connected to the arc-shaped plate 20. A slider 371 is slidably installed on the guide rod. The slider 371 is threadedly engaged with the second screw 370. A cutting blade 372 is installed on the front side of the slider 371. An electric gripper 373 for clamping the adhesive fabric 32 is installed on the opposite surfaces of the two arc-shaped plates 20.

[0044] In actual operation, after the adhesive fabric 32 is laid out, the electric gripper 373 clamps the adhesive fabric 32. Then, the external No. 3 motor installed on the long plate 22, in conjunction with the external No. 3 pulley mechanism, drives the computer No. 2 screw 370 to rotate. The rotation of the No. 2 screw 370 drives the slider 371 to move. The movement of the slider 371 will drive the cutting blade 372 to continue cutting the adhesive fabric 32 for the next use and for the normal operation of the subsequent filling mechanism 2.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the filling mechanism 2 includes an arc-shaped plate 20. An arc-shaped plate 20 is slidably installed on each of the two limiting plates 13. The arc-shaped plate 20 is connected to the fixed plate 12 through a connecting plate 21, and the connecting plate 21 is rotatably engaged with the fixed plate 12 through a pin. Two long plates 22 are arranged between the two arc-shaped plates 20, and the two long plates 22 are symmetrically distributed vertically. Square grooves are opened on the long plates 22. A cross plate 23 is slidably installed between the two long plates 22. A screw 24 is threadedly installed on the cross plate 23. The two ends of the screw 24 are rotatably engaged with the two arc-shaped plates 20 respectively. A circular hole is symmetrically opened on the cross plate 23, and a fixed rod 25 and a conveying pipe 26 are slidably installed in the two circular holes respectively. A drill bit 27 is installed on the side of the fixed rod 25 away from the axis of the limiting plate 13. A driving component 28 for driving the conveying pipe 26 and the fixed rod 25 is provided on the side of the cross plate 23 close to the axis of the limiting plate 13.

[0046] like Figure 6 and Figure 8 As shown, the driving component 28 includes a guide rod 280. A rectangular groove is provided in the middle of the fixed plate 12. The guide rod 280 is installed between the left and right inner walls of the rectangular groove. A first cylinder 281 is provided on the side of the fixed rod 25 away from the drill bit 27. The telescopic end of the first cylinder 281 is rotatably connected to the fixed rod 25. A driven gear 282 is splined on the fixed rod 25 and is rotatably connected to the cross plate 23. A first motor 283 is installed on the left side of the cross plate 23 via a motor. A driving gear 284 that meshes with the driven gear 282 is installed on the output shaft of the first motor 283. A second cylinder 285 is provided on the side of the feed pipe 26 near the axis of the limiting plate 13 and is connected to the feed pipe 26. Both the first cylinder 281 and the second cylinder 285 are slidably engaged with the guide rod 280.

[0047] like Figure 7 As shown, the side of the conveying pipe 26 away from the axis of the limiting plate 13 has a frustum-shaped structure, and a sleeve 260 is provided outside the frustum-shaped section of the conveying pipe 26, and the sleeve 260 has a frustum-shaped structure.

[0048] In practice, an external crack detector detects the crack location and determines the drilling location based on the data. Then, an external fourth motor, mounted on an arc-shaped plate 20, drives a fourth pulley mechanism to rotate a first screw 24. The first screw 24 causes the cross plate 23 to slide, moving the drill bit 27 to the desired drilling position. Next, a first cylinder 281 pushes a fixed rod 25 towards the drilling point. Simultaneously, a first motor 283 drives a driven gear 282 via a drive gear 284. The driven gear 282 rotates the fixed rod 25, while the first cylinder 281 reciprocates, pulling the fixed rod 25 back and forth, causing the drill bit 27 to impact and rotate, moving towards the tunnel to complete the drilling. The adhesive fabric 32 secures the crack, preventing it from being damaged or blocked during drilling, which could affect the subsequent epoxy resin application. After the epoxy resin filling and drilling are completed, cylinder 281 pulls the drill bit 27 away from the tunnel, and then the delivery pipe 26 is moved to the drilling position. Then, cylinder 285 pushes the delivery pipe 26 into the drilled hole. At the same time, sleeve 260 blocks the outside of the drilled hole to reduce the overflow of epoxy resin slurry during injection. Then, the external pipe is connected to the delivery pipe 26. Then, the external delivery pump delivers epoxy resin slurry to the delivery pipe 26 through the external pipe, and then enters the drilled hole through the delivery pipe 26. As the amount of epoxy resin slurry in the drilled hole increases, the continued injection will increase the pressure in the drilled hole, causing the epoxy resin to be squeezed into the crack and extend along the crack path to fill the crack, thereby strengthening the tunnel lining. After the epoxy resin slurry solidifies, the invention is removed from the tunnel. Then, the overflowing epoxy resin slurry is removed and leveled.

[0049] In addition, the present invention also provides a method for reinforcing tunnel lining defects, which is completed in conjunction with tunnel lining defect reinforcement equipment, including the following steps: S1. Laying guide rails inside the tunnel, then using an external crack detector to detect the location of tunnel cracks, and then installing the equipment on the rails and moving it into the tunnel.

[0050] S2. Based on the crack location detected by the external crack detector, the equipment is moved to the crack location and the adhesive fabric 32 is laid on the crack through the material laying mechanism 3 to reinforce the crack and prevent the surrounding cracks from breaking and blocking during the drilling process, which would affect the filling of the epoxy resin grout later. After the adhesive fabric 32 is laid, it is cut by the cutting piece 37 for later reuse.

[0051] S3. After the fabric is laid and cut, the location of the crack is detected again by an external crack detector, and the required drilling points are determined based on the data obtained from the detection.

[0052] S4. First, drill the drilling point in S3 above by filling the hole of the filling mechanism 2, then move the material conveying pipe 26 to the drilling position, and then inject the epoxy resin slurry into the drilling hole.

[0053] S5. After the crack filling has solidified, remove it from the equipment and then remove and level any excess epoxy resin slurry that has overflowed from the filling location.

[0054] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A tunnel lining defect reinforcement apparatus comprising a base (10); characterised in that: The upper end face of the base (10) is provided with a fixing plate (12) through a support plate (11), the fixing plate (12) is symmetrically provided with one limiting plate (13) on the left and right, the limiting plate (13) is in a circular arc structure, and the limiting plate (13) is connected with the fixing plate (12) through a support plate, a filling mechanism (2) is arranged between the two limiting plates (13), and a paving mechanism (3) is arranged below the filling mechanism (2). The filling mechanism (2) comprises an arc-shaped plate (20), one arc-shaped plate (20) is slidably arranged on each of the two limiting plates (13), the arc-shaped plate (20) is connected with the fixing plate (12) through a connecting plate (21), and the connecting plate (21) is rotatably connected with the fixing plate (12) through a pin shaft, two long plates (22) are arranged between the two arc-shaped plates (20) and are symmetrically distributed above and below, a square groove is formed in the long plate (22), a cross plate (23) is slidably arranged between the two long plates (22), a No. 1 screw rod (24) is threadedly and rotatably arranged on the cross plate (23), the two ends of the No. 1 screw rod (24) are rotatably connected with the two arc-shaped plates (20) respectively, a circular hole is formed in the front and back of the cross plate (23), a fixing rod (25) and a material conveying pipe (26) are slidably arranged in the two circular holes respectively, a drill bit (27) is arranged on the side of the fixing rod (25) away from the axis of the limiting plate (13), and a driving member (28) for driving the material conveying pipe (26) and the fixing rod (25) is arranged on the side of the cross plate (23) close to the axis of the limiting plate (13).

2. A tunnel lining defect reinforcement apparatus according to claim 1, characterised in that: The driving member (28) comprises a guide rod (280), a rectangular groove is formed in the middle of the fixing plate (12), the guide rod (280) is arranged between the left and right inner walls of the rectangular groove, a No. 1 air cylinder (281) is arranged on the side of the fixing rod (25) away from the drill bit (27), the telescopic end of the No. 1 air cylinder (281) is rotatably connected with the fixing rod (25), a driven gear (282) is spline-connectedly arranged on the fixing rod (25) and rotatably connected with the cross plate (23), a No. 1 motor (283) is arranged on the left side of the cross plate (23) through a motor, a driving gear (284) engaged with the driven gear (282) is arranged on the output shaft of the No. 1 motor (283), a No. 2 air cylinder (285) is arranged on the side of the material conveying pipe (26) close to the axis of the limiting plate (13), and the telescopic end of the No. 2 air cylinder (285) is connected with the material conveying pipe (26).

3. The device for reinforcing defects in a tunnel lining according to claim 1, characterized in that: The paving mechanism (3) comprises a U-shaped plate (30), the upper end surface of the base (10) is provided with the U-shaped plate (30), the two vertical sections of the U-shaped plate (30) are provided with U-shaped notches, and the two U-shaped notches are jointly provided with a roller shaft (31); the roller shaft (31) is wound with adhesive cloth (32) provided with a release film (33); the left and right inner walls of the rectangular groove are symmetrically provided with a first shaft plate; the two first shaft plates are rotatably provided with two first roller shafts (34); the lower end surface of the fixed plate (12) is provided with a second shaft plate on the left and right sides; the two second shaft plates are rotatably provided with a second roller shaft (35) for winding the release film (33); the lower part of the arc-shaped plate (20) is provided with an extrusion piece (36) for pushing and pressing the adhesive cloth (32); and the extrusion piece (36) and the upper long plate (22) are provided with a cutting piece (37) for cutting the adhesive cloth (32).

4. A tunnel lining defect reinforcement apparatus according to claim 3, characterised in that: The extrusion piece (36) comprises a first L-shaped plate (360), the limiting plate (13) is provided with a sliding groove in the circumferential direction, the front upper end surface of the fixed plate (12) is slidably provided with the first L-shaped plate (360), the first L-shaped plate (360) penetrates through the sliding groove and is slidably connected with the sliding groove, the horizontal section of the first L-shaped plate (360) is provided with a first pressure roller (361), the upper end surface of the fixed plate (12) is provided with a third air cylinder (362), the telescopic end of the third air cylinder (362) is connected with the first L-shaped plate (360), the upper part of the first L-shaped plate (360) is provided with a second L-shaped plate (363), the horizontal end of the second L-shaped plate (363) penetrates through the sliding groove and the arc-shaped plate (20), and the horizontal section of the second L-shaped plate (363) is slidably connected with the arc-shaped plate (20), the horizontal section of the second L-shaped plate (363) is rotatably provided with a second pressure roller (364), the inner side of the second L-shaped plate (363) is provided with a rectangular plate (365), the rectangular plate (365) is connected with the arc-shaped plate (20), the side, close to the second pressure roller (364), of the rectangular plate (365) is provided with a fourth air cylinder (366), and the telescopic section of the fourth air cylinder (366) is connected with the vertical section of the second L-shaped plate (363).

5. A tunnel lining defect reinforcement apparatus according to claim 3, characterised in that: The cutting piece (37) comprises a second screw rod (370), the lower part between the two arc-shaped plates (20) is provided with a guide rod and the second screw rod (370), and the second screw rod (370) is rotatably connected with the arc-shaped plate (20); the guide rod is slidably provided with a sliding block (371), and the sliding block (371) is threadedly connected with the second screw rod (370); the front side of the sliding block (371) is provided with a cutting knife (372); and the opposite surfaces of the two arc-shaped plates (20) are each provided with an electric clamping jaw (373) for clamping the adhesive cloth (32).

6. A tunnel lining defect reinforcement apparatus according to claim 1, characterized in that: The side, away from the axis of the limiting plate (13), of the material conveying pipe (26) is in a circular truncated cone structure, and the outer part of the circular truncated cone structure section of the material conveying pipe (26) is provided with a sleeve (260), and the sleeve (260) is in a circular truncated cone structure.

7. A device for reinforcing defects in a tunnel lining according to claim 4, characterized in that: The circumferential outer wall of the first pressure roller (361) is uniformly provided with convex points in the circumferential direction.

8. A method of reinforcing a defect in a tunnel lining, characterised by: The tunnel lining defect reinforcing device is matched to complete the method, comprising the following steps: S1. Laying a guide rail in the tunnel, then detecting the crack position in the tunnel by an external crack detector, and then moving the device to the tunnel along the guide rail; S2. Moving the device to the crack position, and laying viscous cloth (32) on the crack position by a laying mechanism (3); S3. Detecting the crack position again after laying the cloth to determine the drilling point; S4. Drilling the drilling point in S3 by a filling mechanism (2), and then injecting epoxy resin grout; S5. Moving out the device after the crack filling is solidified, and then removing and leveling the overflow material at the filling position.

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