Efficient multifunctional spraying maintenance trolley for tunnel secondary lining construction and maintenance method

Abstract

The invention relates to an efficient multifunctional spraying maintenance trolley for tunnel secondary lining construction and a maintenance method, the efficient multifunctional spraying maintenance trolley comprises a supporting frame, the outline of the supporting frame is matched with the section shape of a tunnel, the supporting frame is provided with multiple layers of distributed operation platforms in the height direction, and the middle of the supporting frame is provided with a through channel for a construction vehicle to pass through; the spraying system comprises a water retaining structure arranged in the circumferential direction of the supporting frame, a plurality of spraying units arranged on the water retaining structure and a first water storage tank arranged on the supporting frame and used for supplying water to the spraying units; through the fluid recovery system integrating the first collection device and the second collection device, redundant spray water can be automatically collected, filtered and recycled. The problems that water resources are seriously wasted, the environment is wet and slippery due to water flowing and the cleaning difficulty is large are solved, and meanwhile the water using cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction, specifically relating to a high-efficiency, multi-functional spray curing trolley and curing method for tunnel secondary lining construction. Background Technology

[0002] In tunnel construction, traditional maintenance methods often rely on manual hand-held water pipes or simple sprinkler systems, which result in low work efficiency, serious water waste, and uneven maintenance coverage, making it difficult to meet the requirements of modern tunnel engineering for high quality and high efficiency.

[0003] While some existing maintenance trolleys have achieved mechanized spraying to a certain extent, most lack efficient fluid recovery and recycling mechanisms. Water spills everywhere after spraying, wasting water resources and increasing the slipperiness and cleaning difficulty of the tunnel working environment. Therefore, there is an urgent need for a multi-functional integrated trolley system that can achieve efficient, uniform, and full-coverage spraying maintenance while ensuring smooth traffic flow within the tunnel and enabling water recycling. Summary of the Invention

[0004] In order to solve the above-mentioned problems in the existing technology, the present invention aims to provide a high-efficiency and multi-functional spray curing trolley for tunnel secondary lining construction and a curing method.

[0005] The technical solution adopted in this invention includes: The support frame has an outline that matches the shape of the tunnel cross section. The support frame is provided with a multi-layered distributed working platform along the height direction, and a through passage for construction vehicles is provided in the middle of the support frame. The sprinkler system includes a water-blocking structure arranged circumferentially along the support frame, a plurality of sprinkler units disposed on the water-blocking structure, and a first water storage tank disposed on the support frame for supplying water to the sprinkler units. The fluid recovery system includes a first collection device located at the upper end of the water-retaining structure and kept in contact with the inner wall of the tunnel via a transmission mechanism, a second collection device located at the bottom of the water-retaining structure, and a second water storage tank located on the support frame and connected to the water-retaining structure.

[0006] As a preferred embodiment of the present invention, the water-blocking structure is a water-blocking plate, which is installed on the support frame by a fixing rod. The spraying unit is disposed on the water-blocking plate and is connected to the first water storage tank and the second water storage tank respectively through fluid pipelines. The spraying unit is a fan-shaped spray head or a rotating sprayer.

[0007] As a preferred embodiment of the present invention, the top of the second water storage tank is an open structure, and the first collection device includes: A flow guide channel is slidably connected to the end of the water-blocking structure, with one end extending above the opening of the second water storage tank; A sliding groove is slidably connected along the length of the guide groove; The telescopic drive component has its fixed end connected to the guide channel and its output end connected to the sliding channel drive, and is used to push the sliding channel to move towards the inner wall of the tunnel.

[0008] As a preferred embodiment of the present invention, the telescopic drive component includes: A fixing sleeve is fixed to the guide groove; The telescopic rod is movably connected to the fixed sleeve via an elastic element; The rotating wheel is rotatably connected to the telescopic rod via a rotating shaft, and the rotating shaft is fixedly connected to the sliding groove.

[0009] As a preferred embodiment of the present invention, a limiting brush is provided at the end of the sliding groove near the rotating wheel.

[0010] As a preferred embodiment of the present invention, the transmission mechanism includes a linear drive assembly disposed on the second water storage tank, the output end of the linear drive assembly being connected to the guide channel for driving the guide channel to move along the water-blocking structure to adjust the distance between the sliding channel and the inner wall of the tunnel. The second water storage tank is equipped with a position sensor for detecting the position of the guide channel or sliding channel.

[0011] As a preferred embodiment of the present invention, the second collecting device includes: The suction assembly includes a suction hood connected to the bottom of the water-blocking structure, and a suction pump with one end connected to the suction hood and the other end connected to the second water storage tank. A lifting drive component is installed on the second water storage tank, and its output end is connected to the suction hood to drive the suction hood to move in the vertical direction; A horizontal drive component is connected between the output end of the lifting drive component and the suction hood, and is used to drive the suction hood to move closer to or further away from the tunnel wall in the horizontal direction.

[0012] As a preferred embodiment of the present invention, the spray system further includes a compensating spray element located at the bottom of the suction hood, the compensating spray element comprising: The spray bar is rotatably connected to the suction hood via a support base, and the spray bar is in fluid communication with the first water storage tank and the second water storage tank respectively; Multiple nozzles are disposed on the spray bar; A swing element, driven and connected to the spray rod, is used to drive the spray rod to rotate in order to adjust the spray direction of the nozzle.

[0013] As a preferred embodiment of the present invention, the second water storage tank is provided with a filter screen, the bottom of the filter screen is provided with a guide plate, and the end of the guide plate forms a filtration space.

[0014] As a preferred embodiment of the present invention, a method for spray curing tunnel secondary lining includes the following steps: S1. Setting up a maintenance trolley: The spray maintenance trolley is moved to the section to be maintained in the tunnel through a walking mechanism. The trolley is equipped with a support frame that is adapted to the shape of the tunnel cross section. The support frame is equipped with a spray system, a fluid recovery system, a first water storage tank and a second water storage tank. S2. Perform spraying operation: Start the spraying system and use the fluid supplied by the first water tank to spray and cure the surface of the tunnel secondary lining; S3. Recycling and treating recycled water: During spraying, the liquid flowing down the tunnel wall is collected by the fluid recycling system; wherein, the liquid at the top is collected and guided by the first collection device that is attached to the tunnel wall, and the liquid at the bottom is drawn by the second collection device, and both are recycled to the second water storage tank for filtration. S4. Recycling the recycled water: The recycled water after being filtered through the second water storage tank is supplied to the spray system for subsequent spray maintenance operations, thereby realizing the recycling of maintenance water.

[0015] The beneficial effects of this invention are as follows: The fluid recovery system, which integrates the first and second collection devices, can automatically collect, filter, and reuse excess spray water. This solves the problems of serious water waste, slippery environments caused by flowing water, and the difficulty of cleaning, while also reducing water costs.

[0016] The design of the through passage in the middle of the support frame allows construction vehicles to pass normally while the trolley is in place for maintenance, enabling the maintenance work to be carried out in parallel with other processes in the tunnel, and solving the problem of traditional equipment blocking traffic and affecting the overall progress.

[0017] The trolley's profile is adapted to the tunnel cross-section. Combined with a multi-layered distributed working platform and a circumferentially arranged spraying system, it can uniformly spray all areas such as the arch and sidewalls, overcoming the shortcomings of uneven maintenance and low efficiency caused by manual or simple facilities. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is the present invention. Figure 2Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure from another isometric side of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the structure of the second water storage tank of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the second water storage tank of the present invention; Figure 8 This is a schematic diagram of the suction component of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1-Supporting frame; 11-Working platform; 12-Through passage; 2-Sprinkler system; 21-Water-blocking structure; 211-Water-blocking plate; 212-Fixing rod; 22-Sprinkler unit; 23-First water storage tank; 24-Compensating sprinkler component; 241-Sprinkler rod; 242-Nozzle; 243-Oscillating component; 3-Fluid recovery system; 31-First collection device; 311-Guide channel; 312-Sliding channel; 313-Telescopic drive component; 3131-Fixed sleeve; 3132-Telescopic rod; 3133-Roller; 314-Limiting brush; 315-Position sensor; 32-Second collection device; 321-Suction assembly; 3211-Suction hood; 3212-Suction pump; 322-Lifting drive component; 323-Horizontal drive component; 33-Second water storage tank; 331-Filter screen; 332-Guide plate; 333-Filter space; 4- Walking mechanism. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] The following is combined Figure 1-8This invention describes a high-efficiency, multi-functional spray curing trolley for tunnel secondary lining construction, comprising: The support frame 1, whose outline is adapted to the shape of the tunnel cross-section, has multiple distributed working platforms 11 arranged along its height, and a through passage 12 for construction vehicles to pass through in the middle of the support frame 1. The support frame 1 ensures that the trolley can adapt to the tunnel outline, and its internal multi-layered distributed working platforms 11 provide construction personnel with a standing operating space that can fully cover the inner wall of the tunnel; the through passage 12 allows construction vehicles such as concrete mixer trucks and transport trucks to pass normally when the trolley is in place, realizing the simultaneous execution of maintenance work and other processes in the tunnel, and avoiding traffic congestion.

[0024] The sprinkler system 2 includes a water-blocking structure 21 arranged circumferentially along the support frame 1, a plurality of sprinkler units 22 disposed on the water-blocking structure 21, and a first water storage tank 23 disposed on the support frame 1 for supplying water to the sprinkler units 22. The sprinkler system 2 sprays the tunnel interior wall evenly through the plurality of sprinkler units 22.

[0025] The fluid recovery system 3 includes a first collection device 31 located at the upper end of the water-retaining structure 21 and kept in contact with the tunnel inner wall via a transmission mechanism, a second collection device 32 located at the bottom of the water-retaining structure 21, and a second water storage tank 33 located on the support frame 1 and connected to the water-retaining structure 21. The first collection device 31 in the fluid recovery system 3 collects fluid flowing towards the end of the water-retaining structure 21 by guiding the flow, while the second collection device 32 collects fluid that leaks from the first collection device 31 and accumulates at the bottom, thereby recovering and maintaining excess fluid, avoiding waste, and improving utilization.

[0026] Please refer to Figures 1-4 As shown, the water-blocking structure 21 is a water-blocking plate 211, which is installed on the support frame 1 via a fixing rod 212. The spraying unit 22 is mounted on the water-blocking plate 211 and is connected to the first water storage tank 23 and the second water storage tank 33 via fluid pipelines. The water-blocking plate 211 is used to block water flow to other working areas or construction passages in the tunnel during spraying and guides it to a specific collection area. The spraying unit 22 is installed on the water-blocking plate 211 to uniformly spray the inner wall of the tunnel secondary lining. The spraying unit 22 is connected to the first water storage tank 23 and the second water storage tank 33, respectively. The first water storage tank 23 stores clean fluid, and the second water storage tank 33 stores recycled fluid, thereby enabling the spraying unit 22 to recycle water resources.

[0027] The spraying unit 22 is a fan-shaped spray head or a rotating sprayer, used to uniformly spray and maintain the inner wall of the tunnel.

[0028] Please refer to Figures 3-6 As shown, the second water tank 33 has an open top. The first collection device 31 includes: The flow channel 311 is slidably connected to the end of the water-blocking structure 21, with one end extending above the opening of the second water storage tank 33. The flow channel 311 can be adjusted laterally to adapt to different tunnel cross-sections, and the portion extending above the second water storage tank 33 provides an inflow path for the collected water.

[0029] The sliding groove 312 is slidably connected along the length of the guide groove 311. The sliding groove 312 can slide along the length of the guide groove 311 so that its end can fit tightly against the inner wall of the tunnel to block and guide the fluid into the second water storage tank 33.

[0030] The telescopic drive component 313 has its fixed end connected to the guide channel 311 and its output end connected to the sliding channel 312, used to push the sliding channel 312 towards the inner wall of the tunnel. The telescopic drive component 313 is used to drive the sliding channel 312 to always be in close contact with the inner wall of the tunnel. To adapt to changes in the tunnel's curvature, the sliding channel 312 can be arranged in multiple segments along its length, with each segment corresponding to one telescopic drive component 313.

[0031] Please refer to Figures 3-6 As shown, the telescopic drive component 313 includes: The fixed sleeve 3131 is fixed on the guide groove 311 and serves as the base of the drive mechanism.

[0032] The telescopic rod 3132 is movably connected to the fixed sleeve 3131 via an elastic element. The telescopic rod 3132 is connected to the fixed sleeve 3131 via an internal elastic element (such as a spring), so that the sliding groove 312 always receives a driving force to move towards the inner wall of the tunnel, and can be buffered by the elastic element when contacting the tunnel wall to adapt to changes in the curvature, ensuring that the end of the sliding groove 312 always fits against the inner wall of the tunnel during the movement of the equipment.

[0033] The rotating wheel 3133 is rotatably connected to the telescopic rod 3132 via a rotating shaft, and the rotating shaft is fixedly connected to the sliding groove 312. The rotating wheel 3133 contacts the tunnel wall. When the tunnel curvature changes, the telescopic rod 3132 can overcome the elastic force contraction of the elastic element, automatically compensate for local unevenness of the wall, and ensure that the sliding groove 312 fits the wall under appropriate pressure.

[0034] Please refer to Figure 5As shown, a limiting brush 314 is provided at the end of the sliding groove 312 near the rotating wheel 3133. When the sliding groove 312 is in contact with the inner wall of the tunnel, the flexible limiting brush 314 can fill the tiny gaps between the edge of the sliding groove 312 and the irregular wall surface, forming a flexible seal to prevent water from splashing out from the joint and improve collection efficiency. At the same time, the flexible contact of the brush avoids hard scraping between the metal groove and the concrete wall surface, protecting the surface of the tunnel secondary lining and reducing wear on the sliding groove 312.

[0035] Please refer to Figures 2-5 As shown, the transmission mechanism includes a linear drive assembly mounted on the second water storage tank 33. The output end of the linear drive assembly is connected to the guide channel 311, and is used to drive the guide channel 311 to move along the water-blocking structure 21 to adjust the distance between the sliding groove 312 and the tunnel inner wall. The linear drive assembly can be driven by a drive method such as an electric screw, hydraulic cylinder, or pneumatic cylinder, and its stroke can be controlled to adapt to tunnel cross-sections of different diameters or shapes.

[0036] The second water storage tank 33 is equipped with a position sensor 315 for detecting the position of the guide channel 311 or the sliding channel 312. The position sensor 315 can be a limit switch, ultrasonic or laser rangefinder, used to detect the distance from the tunnel wall in real time and feed the signal back to the control system, thereby accurately controlling the linear drive assembly to move the sliding channel 312 to the optimal collection position.

[0037] Please refer to Figures 5-8 As shown, the second collecting device 32 includes: The suction assembly 321 includes a suction hood 3211 connected to the bottom of the water-blocking structure 21, and a suction pump 3212 with one end connected to the suction hood 3211 and the other end connected to the second water storage tank 33. One end of the suction hood 3211 has a suction port facing the inner wall of the tunnel, and the other end is connected to the input end of the suction pump 3212. The output end of the suction pump 3212 is connected to the second water storage tank 33.

[0038] A lifting drive component 322 is installed on the second water storage tank 33, and its output end is connected to the suction hood 3211. It is used to drive the suction hood 3211 to move vertically to adapt to slopes or uneven ground that may exist at the bottom of the tunnel. In this embodiment, a slide rail and a slider are used to achieve lifting.

[0039] A horizontal drive component 323 is connected between the output end of the lifting drive component 322 and the suction cover 3211, and is used to drive the suction cover 3211 to move horizontally closer to or further away from the tunnel inner wall, thereby accurately aligning it with the water flow collection area. In this embodiment, a cylinder is used to achieve horizontal drive.

[0040] Please refer to Figure 8 As shown, the spray system 2 further includes a compensating spray element 24, which is located at the bottom of the suction hood 3211 and includes: The spray rod 241 is rotatably connected to the suction hood 3211 via a support base, and the spray rod 241 is in fluid communication with the first water storage tank 23 and the second water storage tank 33 respectively, allowing for selective water extraction.

[0041] Multiple nozzles 242 are disposed on the spray bar 241.

[0042] A swing element 243, mounted on a support base, is driven and connected to the spray rod 241 to rotate the spray rod 241, thereby adjusting the spray direction of the nozzles 242. The swing element 243 can be a small swing cylinder or a worm gear mechanism driven by a servo motor. Once the trolley is in place and the second collection device 32 is adjusted to its working position, controlling the swing element 243 to rotate the spray rod 241 allows the water flow from the nozzles 242 to precisely cover the root area where the tunnel sidewall meets the invert arch, providing compensatory spraying for maintenance blind spots.

[0043] Please refer to Figures 6-7 As shown, the second water storage tank 33 is equipped with a filter screen 331, and a guide plate 332 is provided at the bottom of the filter screen 331. The end of the guide plate 332 forms a filtration space 333. The recovered curing water contains a small amount of cement slurry, dust and other impurities. The water first passes through the filter screen 331 for preliminary solid-liquid separation, intercepting suspended particles. The guide plate 332 has a certain inclination, and its end and the inner wall of the water tank form a filtration space 333, which can guide the water flow and fine particles to gather here, which is conducive to sedimentation and achieves secondary filtration. The filtered clean fluid meets the reuse standard, and the space also facilitates the centralized cleaning of sediment, effectively preventing the spray system 2 from clogging.

[0044] Working principle of this invention: The trolley moves within the tunnel via its bottom traveling mechanism 4 to spray and cure the maintenance section. The outline of the supporting frame 1 is adapted to the shape of the tunnel cross-section, and its internal through passage 12 allows construction vehicles such as concrete mixer trucks to pass normally, enabling the curing operation to be carried out simultaneously with other processes. Workers can stand on the multi-layered distributed work platform 11 to perform full-coverage operation and monitoring.

[0045] When the sprinkler system 2 is started, clean water from the first water tank 23 or recycled water from the second water tank 33 is transported through fluid pipelines to the sprinkler unit 22 arranged on the baffle plate 211. The sprinkler unit 22 uses fan-shaped spray heads or rotating oscillating sprinklers to uniformly and continuously spray and cure the inner wall of the tunnel secondary lining, ensuring that the concrete is fully moistened. During the spraying process, the baffle plate 211 effectively blocks the fluid sprayed onto the inner wall of the tunnel, preventing the fluid from flowing to other working areas or construction passages in the tunnel, and guides it to the preset collection area.

[0046] The fluid recovery system 3 operates synchronously to recover excess curing water. The first collection device 31, driven by a transmission mechanism and in conjunction with a position sensor 315, causes the guide channel 311 and the sliding channel 312 to move laterally, changing the distance between the guide channel 311 and the tunnel wall. The sliding channel 312, under the elastic push of the telescopic drive 313, tightly adheres to the tunnel wall via the rotating wheel 3133, and its end-limiting brush 314 forms a flexible seal to prevent water splashing. The fluid flowing down the inner wall after spraying is blocked by the sliding channel 312 and guided to the guide channel 311, eventually flowing into the open top of the second water storage tank 33.

[0047] At the same time, the second collection device 32 located at the bottom of the water-blocking structure 21 is activated: the lifting drive component 322 and the horizontal drive component 323, together with the position sensor 315, adjust the vertical and horizontal positions of the suction hood 3211 so that its suction port is precisely aligned with the water flow collection area; the suction pump 3212 runs, sucking the fluid accumulated at the bottom and the fluid that may leak from the first collection device 31 into the second water storage tank 33.

[0048] The compensating spray component 24 works at this time. Its spray pipe rotates under the drive of the swing component 243, so that the nozzle 242 compensates for the blind area at the root where the tunnel sidewall meets the invert arch. The water source can be selected from the first water storage tank 23 or the second water storage tank 33.

[0049] The fluid recycled to the second water storage tank 33 undergoes preliminary solid-liquid separation through the internal filter screen 331, where suspended particles are intercepted. The water flow is guided along the guide plate 332 to the filtration space 333 for secondary sedimentation filtration, ensuring that the clean water meets reuse standards. The filtered water can be pumped to the spray unit 22 for recycling, forming a closed-loop utilization of water resources, significantly improving utilization efficiency and avoiding waste.

[0050] Throughout the process, the position sensor 315 continuously monitors the distance between the guide channel 311 or sliding channel 312 and the tunnel wall, feeding this information back to the control system for precise control of the linear drive assembly. This allows the first collection device 31 to adapt to different tunnel cross-sections. The telescopic drive component 313 automatically compensates for unevenness in the wall surface through elastic buffering, ensuring a good fit. This system achieves spray curing, fluid recovery, filtration reuse, and blind spot compensation, improving curing efficiency and quality while ensuring smooth traffic flow within the tunnel.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of this application, all of which should fall within the protection scope of the present invention.

Claims

1. A high-efficiency, multi-functional spray curing trolley for tunnel secondary lining construction, characterized in that, include: The support frame (1) has an outline that matches the shape of the tunnel cross section. The support frame (1) is provided with a multi-layer distributed working platform (11) along the height direction, and the support frame (1) is provided with a through passage (12) for construction vehicles to pass through in the middle. The sprinkler system (2) includes a water-blocking structure (21) arranged circumferentially along the support frame (1), a plurality of sprinkler units (22) disposed on the water-blocking structure (21), and a first water storage tank (23) disposed on the support frame (1) for supplying water to the sprinkler units (22). The fluid recovery system (3) includes a first collection device (31) located at the upper end of the water-blocking structure (21) and kept in contact with the inner wall of the tunnel through a transmission mechanism, a second collection device (32) located at the bottom of the water-blocking structure (21), and a second water storage tank (33) located on the support frame (1) and connected to the water-blocking structure (21).

2. The high-efficiency multi-functional spray curing trolley for tunnel secondary lining construction according to claim 1, characterized in that: The water-blocking structure (21) is a water-blocking plate (211), which is installed on the support frame (1) by a fixing rod (212). The spraying unit (22) is located on the water-blocking plate (211) and is connected to the first water storage tank (23) and the second water storage tank (33) respectively through fluid pipelines. The spray unit (22) is a fan-shaped spray head or a rotating sprayer.

3. The high-efficiency, multi-functional spray curing trolley for tunnel secondary lining construction according to claim 2, characterized in that, The second water tank (33) has an open top, and the first collection device (31) includes: The guide channel (311) is slidably connected to the end of the water-blocking structure (21), with one end extending above the opening of the second water storage tank (33); The sliding groove (312) is slidably connected along the length direction of the guide groove (311); The telescopic drive component (313) has its fixed end connected to the guide channel (311) and its output end connected to the sliding channel (312) for driving the sliding channel (312) to move towards the inner wall of the tunnel.

4. The high-efficiency, multi-functional spray curing trolley for tunnel secondary lining construction according to claim 3, characterized in that, The telescopic drive (313) includes: A fixing sleeve (3131) is fixed to the guide groove (311); The telescopic rod (3132) is movably connected to the fixed sleeve (3131) via an elastic element; The rotating wheel (3133) is rotatably connected to the telescopic rod (3132) via a rotating shaft, and the rotating shaft is fixedly connected to the sliding groove (312).

5. The high-efficiency multi-functional spray curing trolley for tunnel secondary lining construction according to claim 4, characterized in that: The sliding groove (312) is provided with a limiting brush (314) at the end near the rotating wheel (3133).

6. The high-efficiency multi-functional spray curing trolley for tunnel secondary lining construction according to claim 3, characterized in that: The transmission mechanism includes a linear drive assembly mounted on the second water storage tank (33). The output end of the linear drive assembly is connected to the guide channel (311) and is used to drive the guide channel (311) to move along the water-blocking structure (21) to adjust the distance between the sliding groove (312) and the inner wall of the tunnel. The second water storage tank (33) is equipped with a position sensor (315) for detecting the position of the guide channel (311) or the sliding channel (312).

7. The high-efficiency multi-functional spray curing trolley for tunnel secondary lining construction according to claim 3, characterized in that, The second collecting device (32) includes: The suction assembly (321) includes a suction cover (3211) connected to the bottom of the water-blocking structure (21), and a suction pump (3212) with one end connected to the suction cover (3211) and the other end connected to the second water storage tank (33). A lifting drive component (322) is installed on the second water storage tank (33), and its output end is connected to the suction cover (3211) to drive the suction cover (3211) to move in the vertical direction; A horizontal drive component (323) is connected between the output end of the lifting drive component (322) and the suction hood (3211) to drive the suction hood (3211) to move closer to or further away from the tunnel wall in the horizontal direction.

8. The high-efficiency, multi-functional spray curing trolley for tunnel secondary lining construction according to claim 7, characterized in that, The spray system (2) further includes a compensating spray element (24), which is located at the bottom of the suction hood (3211) and includes: The spray rod (241) is rotatably connected to the suction hood (3211) via a support base, and the spray rod (241) is in fluid communication with the first water storage tank (23) and the second water storage tank (33) respectively; Multiple nozzles (242) are disposed on the spray bar (241); The swing member (243) is driven to connect with the spray rod (241) and is used to drive the spray rod (241) to rotate in order to adjust the spraying direction of the nozzle (242).

9. The high-efficiency multi-functional spray curing trolley for tunnel secondary lining construction according to claim 1, characterized in that: The second water storage tank (33) is equipped with a filter screen (331), and the bottom of the filter screen (331) is equipped with a guide plate (332), and the end of the guide plate (332) forms a filter space (333).

10. A method for spray curing tunnel secondary lining according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Setting up a maintenance trolley: The spray maintenance trolley is moved in the section to be maintained in the tunnel by a walking mechanism (4). The trolley is equipped with a support frame (1) that is adapted to the shape of the tunnel cross section. The support frame (1) is equipped with a spray system (2), a fluid recovery system (3), a first water storage tank (23) and a second water storage tank (33). S2. Perform spraying operation: Start the spraying system (2) and use the fluid supplied by the first water tank (23) to spray and maintain the surface of the tunnel secondary lining; S3. Recycling and treating recycled water: During spraying, the liquid flowing down the tunnel wall is collected by the fluid recycling system (3); wherein, the liquid at the top is collected and guided by the first collection device (31) that is attached to the tunnel wall, and the liquid at the bottom is drawn by the second collection device (32), and both are recycled to the second water storage tank (33) for filtration. S4. Recycled water: The recycled water after being filtered by the second water storage tank (33) is supplied to the spray system (2) for subsequent spray maintenance operations, so as to realize the recycling of maintenance water.

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