Automatic brushing device for waterproof paint on inner wall of tunnel

Abstract

The invention relates to the technical field of tunnel construction, and discloses a tunnel inner wall waterproof paint automatic brushing device which comprises a bearing plate and a fixing plate, a hot air generator is arranged at the top of the bearing plate, and an air outlet of the hot air generator is connected with a conical conveying shell. According to the automatic coating device for the waterproof coating on the inner wall of the tunnel, hot air flow is uniformly discharged through a plurality of air flow conveying pipes arranged on the outer arc surface of an arc-shaped conveying pipe, the hot air flow is in contact with the sprayed inner wall of the tunnel, and the effect of drying and heating the inner wall of the tunnel is achieved, so that the solidification speed of the waterproof coating is increased; in the whole operation process, through combination with spraying, accelerated solidification operation of hot air flow can be carried out in the spraying process, the time required by solidification can be shortened to the maximum extent, and the design of an arc-shaped air flow track can ensure the uniform contact effect of the air flow and the inner wall of the tunnel; and the stability in the conveying process is guaranteed through diffusion and reintegration of hot air flow.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to an automatic coating device for waterproof coating on the inner wall of a tunnel. Background Art

[0002] The environment in which the tunnel is located is complex, and there may be abundant groundwater or rainwater infiltration around it. Waterproof coatings can form a continuous and dense waterproof film on the inner wall of the tunnel, effectively blocking moisture from penetrating the concrete structure, preventing groundwater or other water sources from seeping into the tunnel, avoiding leakage, dripping and other phenomena in the tunnel, and ensuring dryness and normal use of the tunnel.

[0003] According to an automatic waterproof coating device for tunnel inner walls with publication number CN112718400B, this solution effectively solves the problem of spraying waterproof coating on tunnel walls during tunnel construction. The waterproof coating is obtained by fully mixing waterproof coating powder and clean water in a certain proportion. After the waterproof coating is sprayed on the inner walls of the tunnel, the durability of the concrete lining and the functions of various facilities in the tunnel can be improved. At present, when spraying waterproof coating, manual coating and leveling are still required. Even though some projects currently use mechanical spraying, the leveling work is still done manually, which is time-consuming and labor-intensive and cannot be automated. In addition, when workers perform painting operations at high altitudes, the problem of construction insecurity is greatly increased.

[0004] However, during actual operation, the inventors found that the following problems still exist: although the above scheme collects the splashed waterproof coating during the spraying process through the material baffle, after spraying, the waterproof coating on the inner wall of the tunnel will form a dripping state, and the solidification speed is slow, resulting in the dripping waterproof coating after spraying to drip onto the ground and difficult to clean. Based on this, the present invention provides an automatic painting device for the inner wall of the tunnel waterproof coating. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an automatic painting device for the inner wall of a tunnel with waterproof coating, which has the advantages of using hot air flow to assist in heating and solidifying the sprayed waterproof coating and adapting the air flow heating trajectory to the angle of the inner wall of the tunnel to make the heating more uniform, thereby solving the problems raised in the background technology.

[0006] The present invention provides the following technical solution: an automatic brushing device for waterproofing the inner wall of a tunnel, comprising a carrying plate and a fixed plate, a hot air generator being arranged on the top of the carrying plate, an air outlet of the hot air generator being connected to a conical conveying shell, an air flow equalizing pipe being fixedly connected to the other side of the conical conveying shell, two groups of rectifier plates being fixedly installed on the inner side of the air flow equalizing pipe, connecting pipe 1 being fixedly connected to both sides of the air flow equalizing pipe, connecting pipe 2 being fixedly connected to the other side of connecting pipe 1, arc-shaped conveying pipes being fixedly connected to both sides of connecting pipe 2, and a plurality of air flow conveying pipes being fixedly installed on the outer arc surface of the arc-shaped conveying pipe.

[0007] Preferably, four groups of support rods 2 are fixedly connected to the top of the fixed plate, wherein the tops of two groups of support rods 2 are fixedly connected to arc-shaped carrier plate 1, and the tops of the other two groups of support rods 2 are fixedly connected to arc-shaped carrier plate 2. The arc-shaped carrier plate 1 and the arc-shaped carrier plate 2 are both provided with arc-shaped grooves, and a connecting shaft is fitted inside the arc-shaped groove. A limiting gasket is fixedly installed on the outer side of the connecting shaft, and a nozzle mounting shell is fixedly connected to the inner side of the connecting shaft. Two groups of paint nozzles are arranged inside the nozzle mounting shell, and the bottoms of the two groups of paint nozzles are fixedly connected to connecting hoses, and the other end of the connecting hose is fixedly connected to a waterproof paint storage shell.

[0008] Preferably, four groups of mounting brackets are fixedly mounted on the bottom of the supporting plate, driving motor 1 is fixedly mounted on the side surfaces of the four groups of mounting brackets, and the output shaft of the driving motor 1 is fixedly connected to the moving wheel.

[0009] Preferably, the two groups of rectifier plates are symmetrically distributed.

[0010] Preferably, four groups of support rods 1 are fixedly connected to the top of the supporting plate, and the tops of the four groups of support rods 1 are fixedly connected to a fixing plate.

[0011] Preferably, a waterproof coating storage shell is fixedly mounted on the outer sides of the arc-shaped carrier plate 1 and the arc-shaped carrier plate 2, respectively, and a screw cover is provided on the top of the waterproof coating storage shell.

[0012] Preferably, a second drive motor is fixedly mounted on the outer side of the second arc-shaped carrier plate, the second drive motor is externally connected to a PLC console, the output shaft of the second drive motor is fixedly connected to a control shaft, the surface of the control shaft is fixedly connected to a linkage rod, the top of the linkage rod is fixedly connected to a nozzle mounting shell, and an anti-slip ring is fixedly mounted on the outer side of the control shaft.

[0013] Preferably, a suction pump is provided inside the waterproof coating storage shell, and the suction pump is connected to a connecting hose.

[0014] Preferably, a seepage collection shell is fixedly mounted on opposite sides of the arc-shaped carrier plate 1 and the arc-shaped carrier plate 2, and a blocking plug is provided at the bottom of the seepage collection shell.

[0015] Preferably, the outer sides of the arc-shaped carrier plate 1 and the arc-shaped carrier plate 2 are respectively fixedly connected with air flow conveying pipes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The automatic brushing device for waterproof coating on the inner wall of the tunnel uses the hot air flow generated by the hot air generator to flow into the conical conveying shell through the pipeline for preliminary air flow diffusion, and then enters the interior of the air flow equalizing tube through the conical conveying shell, and integrates the hot air flow by using two sets of rectifier plates fixedly installed inside the air flow equalizing tube, so that the hot air flow output is uniform and stable, and the hot air flow is transported to the interior of the two sets of arc conveying pipes through connecting pipe 1 and connecting pipe 2, and then discharged evenly through several air conveying pipes arranged on the outer arc surface of the arc conveying pipe, and the hot air flow is used to contact the inner wall of the tunnel after spraying, and to achieve the effect of drying and heating it, thereby accelerating the solidification speed of the waterproof coating. During the entire operation, through combination with spraying, the accelerated solidification operation of the hot air flow can be carried out simultaneously during the spraying process, which can minimize the time required for solidification, and the design of the arc airflow trajectory can ensure the uniform contact effect of the airflow with the inner wall of the tunnel, and the stability of the transportation process is guaranteed by the diffusion and integration of the hot air flow.

[0017] 2. The automatic waterproof coating device for the inner wall of the tunnel is placed at the center line of the tunnel, and the suction pump of the waterproof coating storage shell is used to output the coating to the coating nozzle inside the nozzle installation shell through the connecting hose for spraying. At the same time, the PLC console connected to the driving motor 2 is used to control the output shaft of the driving motor 2 to rotate in a semi-arc motion trajectory, thereby driving the nozzle installation shell fixedly connected to the top of the linkage rod to rotate together. At the same time, the connecting shafts on both sides of the nozzle installation shell are limited by the limiting action of the limiting gasket to slide inside the arc groove, thereby being able to form a uniform spraying at a relative angle to the inside of the tunnel to the greatest extent. During the entire operation, the design of the arc-shaped spraying trajectory can make the distance error between the spray outlet and the inner wall of the tunnel as small as possible, thereby achieving the purpose of uniform spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the device of the present invention; Figure 2 For the present invention Figure 1 The right side structural diagram of Figure 3 For the present invention Figure 1 Schematic diagram of the local structure; Figure 4 For the present invention Figure 1Schematic diagram of part of the structure; Figure 5 Schematic diagram of the cross-sectional structure of the airflow equalizing tube of the present invention; Figure 6 This is a schematic diagram of the overall structure of the seepage collection shell of the present invention.

[0019] In the picture: 1. Loading plate; 101. Blocking plug; 102. Mounting bracket; 103. Driving motor 1; 104. Moving wheel; 105. Support rod 1; 106. Fixing plate; 107. Support rod 2; 108. Leakage collection shell; 2. Hot air generator; 201. Conical conveying shell; 202. Airflow equalizing pipe; 203. Connecting pipe 1; 204. Connecting pipe 2; 205. Curved conveying pipe; 206. Airflow conveying pipe; 207. Rectifier plate; 3. Arc-shaped carrier plate 1; 301. Waterproof paint storage shell; 302. Screw cover; 303. Arc-shaped carrier plate 2; 304. Arc-shaped groove; 305. Drive motor 2; 306. Nozzle mounting shell; 307. Paint nozzle; 308. Control shaft; 309. Anti-slip ring; 310. Connecting hose; 311. Linkage rod; 312. Limiting gasket; 313. Connecting shaft. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Tunnels are passages designed specifically for automobile transportation. With the development of social economy and production, a large number of expressways have emerged, which have put forward higher standards for road construction technology, requiring straight lines, gentle slopes, and wide road surfaces. Therefore, when roads pass through mountainous areas, the previous winding route has been replaced by tunnels. The construction of tunnels plays an important role in improving the technical status of roads, shortening operating distances, increasing transportation capacity, and reducing accidents.

[0023] The main reasons for water seepage during tunnel construction include geological reasons, construction problems, and aging of the tunnel structure. Regarding geological reasons, when tunnels pass through different geological layers, water seepage is prone to occur due to complex geological conditions, especially in areas with abundant groundwater or in soft soil layers. Regarding construction problems, if the waterproofing treatment is not in place, such as improper selection of waterproofing materials or loose treatment of construction joints, it will lead to water seepage in the later stage. Regarding the aging of the tunnel structure, cracks or deformations may appear in the tunnel structure over time, causing water to seep into the tunnel.

[0024] The spray waterproofing materials commonly used in tunnel construction mainly include the following: Acrylate spray film: This material consists of a two-component solution (A and B) of acrylate solution. After spraying with specialized equipment, it instantly polymerizes in the air, forming a strong, resilient, and elastic waterproof membrane. Acrylate spray film is highly adaptable and bonds firmly to a variety of substrates, offering excellent durability and a service life of over 20 years. It is also self-healing, resistant to acid and alkali corrosion, and environmentally friendly, making it suitable for transportation tunnels, urban rail transit, underground utility corridors, underground spaces in municipal engineering projects, underground spaces in airports, and sewage treatment tanks. Spray Polyurea Elastomer (SPUA): This is a new, highly effective waterproofing material that forms a continuous, seamless, and jointless waterproof layer through on-site spraying. Spray Polyurea Elastomer has excellent physical and mechanical properties and chemical stability, making it particularly suitable for waterproofing complex structural surfaces. Cement-based penetrating crystalline waterproof coating: This material chemically reacts with the free alkali in concrete to form water-insoluble dendritic crystals that fill and seal pores and cracks, achieving long-term waterproofing. It is suitable not only for tunnel linings but also for waterproofing other concrete structures. Bentonite waterproof blanket: Made of natural sodium-based bentonite particles and non-woven fabric, it swells in water to form a dense gel, effectively preventing water from passing through. It also has good flexibility and puncture resistance. Epoxy resin and polyurethane grouting materials: For larger cracks or leaks in the tunnel, chemical grouting methods can be used for local treatment. Epoxy resin and polyurethane grouting materials can quickly solidify to form a strong filling, effectively blocking the leaking channels.

[0025] The main function of spray-on waterproofing materials in tunnel construction is to provide reliable waterproof protection, ensure dryness inside the tunnel, and guarantee the safety and normal operation of the tunnel structure. Specifically, spray-on waterproofing materials play the following important roles in tunnel construction: Waterproof performance: The waterproof material forms a dense waterproof membrane that effectively blocks groundwater penetration. Even under high water pressure, it maintains a good waterproof effect for a long time, ensuring the dryness of the tunnel interior and preventing water accumulation from affecting the tunnel's structural safety and normal operation. Adaptability to deformation: Tunnels can deform due to factors such as geological subsidence and temperature changes. Waterproofing materials need to have good flexibility and elasticity to adapt to these deformations. Acrylate spray waterproofing materials are highly elastic, with an elongation of up to 500%. They can stretch with the deformation of the tunnel without cracking, maintaining the integrity of the waterproof membrane and continuously performing its waterproofing function. Construction Ease: Tunnel construction environments are complex, construction space is limited, and construction deadlines are tight. Spray-applied waterproofing materials are simple to operate and quick to apply. Compared to traditional waterproofing membranes, they eliminate the need for extensive splicing and can quickly form a continuous waterproof layer on the tunnel lining surface, significantly shortening construction time, minimizing impacts on tunnel construction progress, improving construction efficiency, and reducing labor costs. Adhesion and integrity: Waterproofing materials must bond firmly with concrete and other materials commonly used in tunnels to form a tightly integrated waterproofing system. Acrylate spray film materials can firmly bond with concrete and other base surfaces to form a seamless waterproof membrane, eliminating the problem of seams prone to leakage. This effectively prevents the waterproof layer from falling off and water seepage, ensuring the stability and reliability of the waterproofing system. Durability and corrosion resistance: Tunnels are complex environments where a variety of chemicals may be present. Waterproofing materials must possess excellent chemical resistance and be highly resistant to acids, alkalis, salts, and other chemicals. Acrylate spray-coated waterproofing materials offer excellent chemical resistance and are resistant to aging and deterioration. They maintain stable waterproofing performance over long periods of use, reducing the high costs and disruption to tunnel operations caused by frequent maintenance.

[0026] After spraying, the waterproof coating on the inner wall of the tunnel will form a dripping state, and the solidification speed is slow, causing the dripping waterproof coating after spraying to drip onto the ground and be difficult to clean.

[0027] See also Figure 1-6, an automatic brushing device for waterproof coating on the inner wall of a tunnel, comprising a carrying plate 1 and a fixing plate 106, a hot air generator 2 is provided on the top of the carrying plate 1, an air outlet of the hot air generator 2 is connected to a conical conveying shell 201, the other side of the conical conveying shell 201 is fixedly connected to an air flow equalizing pipe 202, two sets of rectifier plates 207 are fixedly installed on the inner side of the air flow equalizing pipe 202, both sides of the air flow equalizing pipe 202 are fixedly connected to a connecting pipe 1 203, the other side of the connecting pipe 1 203 is fixedly connected to a connecting pipe 2 204, both sides of the connecting pipe 204 are fixedly connected to an arc conveying pipe 205, and a plurality of air flow conveying pipes 206 are fixedly installed on the outer arc surface of the arc conveying pipe 205, the hot air flow generated by the hot air generator 2 flows into the conical conveying shell 201 through the pipeline for preliminary air flow diffusion, and then enters the air flow equalizing pipe 20 through the conical conveying shell 201 2, two groups of rectifier plates 207 fixedly installed inside the air flow equalizing tube 202 are used to integrate the hot air flow, so that the hot air flow output is uniform and stable. The hot air flow is transported to the inside of the two groups of arc-shaped conveying pipes 205 through the connecting pipe 1 203 and the connecting pipe 2 204, and then the hot air flow is evenly discharged through a number of air flow conveying pipes 206 arranged on the outer arc surface of the arc-shaped conveying pipe 205. The hot air flow is used to contact the inner wall of the tunnel after spraying and achieve the effect of drying and heating it, thereby accelerating the solidification speed of the waterproof coating. During the entire operation, by combining it with spraying, the accelerated solidification operation of the hot air flow can be achieved during the spraying process, which can minimize the time required for solidification. The design of the arc-shaped air flow trajectory can ensure the uniform contact effect between the air flow and the inner wall of the tunnel, and the stability of the transportation process is guaranteed by the diffusion and reintegration of the hot air flow.

[0028] Among them, the top of the fixed plate 106 is fixedly connected with four groups of support rods 2 107, of which the tops of two groups of support rods 2 107 are fixedly connected with arc-shaped carrier plate 1 3, and the tops of the other two groups of support rods 2 107 are fixedly connected with arc-shaped carrier plate 2 303. Arc-shaped carrier plate 1 3 and arc-shaped carrier plate 2 303 are both penetrated with arc-shaped grooves 304, and the interior of the arc-shaped grooves 304 is fitted with a connecting shaft 313. The outer side of the connecting shaft 313 is fixedly installed with a limiting gasket 312, and the inner side of the connecting shaft 313 is fixedly connected with a nozzle mounting shell 306. Two groups of paint nozzles 307 are arranged inside the nozzle mounting shell 306. The bottom of the two groups of paint nozzles 307 is fixedly connected with a connecting hose 310, and the other end of the connecting hose 310 is fixedly connected with a waterproof paint storage shell 301. By placing this device in the tunnel At the center line, the suction pump of the waterproof paint storage shell 301 is used to output the paint to the paint nozzle 307 inside the nozzle mounting shell 306 through the connecting hose 310 for spraying, and the PLC console connected to the drive motor 2 305 is used to control the output shaft of the drive motor 2 305 to rotate in a semi-arc motion trajectory, thereby driving the nozzle mounting shell 306 fixedly connected to the top of the linkage rod 311 to rotate together, and at the same time, the connecting shafts 313 on both sides of the nozzle mounting shell 306 are limited by the limiting gasket 312 to slide inside the arc groove 304, thereby being able to form a uniform spraying at a relative angle to the inside of the tunnel to the greatest extent. During the entire operation, the design of the arc-shaped spraying trajectory can make the distance error between the spray outlet and the inner wall of the tunnel small, thereby achieving the purpose of uniform spraying.

[0029] The PLC console controls the forward and reverse rotation of the motor, which is an existing mature technology and is therefore not described in detail.

[0030] wherein; four sets of mounting brackets 102 are fixedly mounted on the bottom of the carrier plate 1, and a drive motor 103 is fixedly mounted on the side of the four sets of mounting brackets 102, and the output shaft of the drive motor 103 is fixedly connected to the moving wheel 104.

[0031] Among them, the two groups of rectifier plates 207 are symmetrically distributed.

[0032] Among them, the top of the supporting plate 1 is fixedly connected with four groups of support rods 105, and the top of the four groups of support rods 105 is fixedly connected with a fixing plate 106.

[0033] Among them, a waterproof coating storage shell 301 is fixedly installed on the outer side of the curved carrier plate 1 3 and the curved carrier plate 2 303 respectively, and a screw cover 302 is provided on the top of the waterproof coating storage shell 301. By rotating and removing the screw cover 302 on the top of the waterproof coating storage shell 301, waterproof coating can be added to the interior of the waterproof coating storage shell 301.

[0034] Among them, a driving motor 305 is fixedly installed on the outer side of the arc-shaped carrier plate 303, and the driving motor 305 is externally connected to a PLC console. The output shaft of the driving motor 305 is fixedly connected to a control shaft 308, and the surface of the control shaft 308 is fixedly connected to a linkage rod 311, and the top of the linkage rod 311 is fixedly connected to a nozzle mounting shell 306, and an anti-slip ring 309 is fixedly installed on the outer side of the control shaft 308.

[0035] wherein the waterproof coating storage shell 301 is provided with a suction pump, which is connected to the connecting hose 310 .

[0036] Among them, a seepage collection shell 108 is fixedly installed on the opposite sides of the curved carrier plate 1 3 and the curved carrier plate 2 303, and a blocking plug 101 is provided at the bottom of the seepage collection shell 108. The blocking plug 101 provided at the bottom of the seepage collection shell 108 can discharge the waterproof coating of the mobile phone and recycle it.

[0037] The outer sides of the arc-shaped carrier plate 1 3 and the arc-shaped carrier plate 2 303 are respectively fixedly connected with an air flow conveying pipe 206.

[0038] Working principle: by placing the device at the center line of the tunnel, waterproof paint can be added to the interior of the waterproof paint storage shell 301 by rotating and removing the screw cover 302 on the top of the waterproof paint storage shell 301, and the suction pump of the waterproof paint storage shell 301 is used to output the paint to the paint nozzle 307 inside the nozzle mounting shell 306 through the connecting hose 310 for spraying. At the same time, the PLC console connected to the driving motor 2 305 is used to control the output shaft of the driving motor 2 305 to rotate in a semi-arc motion trajectory, thereby driving the nozzle mounting shell 306 fixedly connected to the top of the linkage rod 311 to rotate together, and at the same time, the connecting shafts 313 on both sides of the nozzle mounting shell 306 are limited by the limiting gasket 312 to slide inside the arc groove 304, thereby being able to form a uniform spraying at a relative angle to the interior of the tunnel to the greatest extent, and the waterproof paint that falls off during spraying will be collected by seepage The collection shell 108 is used for collection, and the waterproof coating of the mobile phone can be discharged and collected through the blocking plug 101 provided at the bottom of the seepage collection shell 108 for recycling. The hot air flow generated by the hot air generator 2 flows into the conical conveying shell 201 through the pipeline for preliminary air flow diffusion, and then enters the interior of the air flow equalizing tube 202 through the conical conveying shell 201. The hot air flow is integrated by using two groups of rectifier plates 207 fixedly installed inside the air flow equalizing tube 202 to make the hot air flow output uniform and stable. The hot air flow is conveyed to the interior of the two groups of arc conveying pipes 205 through the connecting pipe 1 203 and the connecting pipe 2 204, and then the hot air flow is evenly discharged through several air conveying pipes 206 provided on the outer arc surface of the arc conveying pipe 205. The hot air flow is used to contact the inner wall of the tunnel after spraying and to achieve the effect of drying and heating it, thereby accelerating the solidification speed of the waterproof coating.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic waterproof coating device for tunnel inner wall, characterized in that: The invention comprises a supporting plate (1) and a fixing plate (106), wherein a hot air generator (2) is provided on the top of the supporting plate (1), an air outlet of the hot air generator (2) is connected to a conical conveying shell (201), an air flow equalizing tube (202) is fixedly connected to the other side of the conical conveying shell (201), two groups of rectifier plates (207) are fixedly installed on the inner side of the air flow equalizing tube (202), two sides of the air flow equalizing tube (202) are respectively fixedly connected to a connecting tube 1 (203), the other side of the connecting tube 1 (203) is fixedly connected to a connecting tube 2 (204), two sides of the connecting tube 2 (204) are respectively fixedly connected to an arc conveying tube (205), and a plurality of air flow conveying tubes (206) are fixedly installed on the outer arc surface of the arc conveying tube (205).

2. The automatic waterproof coating device for tunnel inner wall according to claim 1 is characterized in that: The top of the fixed plate (106) is fixedly connected to four groups of support rods 2 (107), wherein the tops of two groups of support rods 2 (107) are fixedly connected to arc-shaped carrier plates 1 (3), and the tops of the other two groups of support rods 2 (107) are fixedly connected to arc-shaped carrier plates 2 (303). The arc-shaped carrier plates 1 (3) and arc-shaped carrier plates 2 (303) are both penetrated by arc-shaped grooves (304), and the interior of the arc-shaped grooves (304) is fitted with a connecting shaft (313), and a limiting gasket (312) is fixedly installed on the outer side of the connecting shaft (313). The inner side of the connecting shaft (313) is fixedly connected to a nozzle mounting shell (306), and two groups of paint nozzles (307) are arranged inside the nozzle mounting shell (306). The bottoms of the two groups of paint nozzles (307) are fixedly connected to connecting hoses (310), and the other end of the connecting hose (310) is fixedly connected to a waterproof paint storage shell (301).

3. The automatic waterproof coating device for tunnel inner wall according to claim 1 is characterized in that: Four groups of mounting brackets (102) are fixedly mounted on the bottom of the carrier plate (1), and drive motors (103) are fixedly mounted on the sides of the four groups of mounting brackets (102). The output shaft of the drive motor (103) is fixedly connected to a moving wheel (104).

4. The automatic waterproof coating device for tunnel inner wall according to claim 1 is characterized in that: The two groups of rectifier plates (207) are symmetrically distributed.

5. The automatic waterproof coating device for tunnel inner wall according to claim 1 is characterized in that: Four groups of support rods (105) are fixedly connected to the top of the bearing plate (1), and the tops of the four groups of support rods (105) are fixedly connected to a fixing plate (106).

6. The automatic waterproof coating device for tunnel inner wall according to claim 2, characterized in that: A waterproof coating storage shell (301) is fixedly mounted on the outer sides of the arc-shaped carrier plate 1 (3) and the arc-shaped carrier plate 2 (303), respectively. A screw cover (302) is provided on the top of the waterproof coating storage shell (301).

7. The automatic waterproof coating device for tunnel inner wall according to claim 2, characterized in that: A second drive motor (305) is fixedly mounted on the outer side of the second arc-shaped carrier plate (303), the second drive motor (305) is externally connected to a PLC control console, the output shaft of the second drive motor (305) is fixedly connected to a control shaft (308), the surface of the control shaft (308) is fixedly connected to a linkage rod (311), the top of the linkage rod (311) is fixedly connected to a nozzle mounting shell (306), and an anti-slip ring (309) is fixedly mounted on the outer side of the control shaft (308).

8. The automatic waterproof coating device for tunnel inner wall according to claim 2, characterized in that: A suction pump is provided inside the waterproof coating storage shell (301), and the suction pump is connected to a connecting hose (310).

9. The automatic waterproof coating device for tunnel inner wall according to claim 2, characterized in that: A seepage collection shell (108) is fixedly mounted on opposite sides of the arc-shaped carrier plate 1 (3) and the arc-shaped carrier plate 2 (303), and a blocking plug (101) is provided at the bottom of the seepage collection shell (108).

10. The automatic waterproof coating device for tunnel inner wall according to claim 2, characterized in that: The outer sides of the arc-shaped carrier plate 1 (3) and the arc-shaped carrier plate 2 (303) are respectively fixedly connected with air flow conveying pipes (206).

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