A tunnel second lining full-face maintenance spraying assembly

Abstract

This utility model belongs to the field of tunnel maintenance, specifically a spray assembly for full-section maintenance of tunnel secondary lining. Addressing the problem that existing water trucks cannot comprehensively and effectively cover different areas such as the tunnel top and sidewalls, failing to meet the requirement of uniform full-section maintenance and affecting maintenance quality and efficiency, the following solution is proposed: It includes a water truck with a water storage tank; a spray unit is installed on the outside of the water tank for spraying the entire section of the tunnel secondary lining; and a clamping assembly is provided on the water truck to clamp and fix the spray unit. This utility model, through the spray unit, achieves effective full-section maintenance spraying of the tunnel secondary lining. The multi-layered, all-around spraying method ensures that all parts of the tunnel secondary lining receive sufficient and uniform maintenance, effectively improving maintenance quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel maintenance technology, and in particular to a full-section maintenance spraying assembly for tunnel secondary lining. Background Technology

[0002] Full-section secondary lining of a tunnel refers to a construction process in which, after the initial support of the tunnel is completed, an integral full-section steel formwork hydraulic lining trolley is used to perform one-time casting of concrete for secondary support of the tunnel body. Its core lies in achieving continuous concrete pouring through the full-section formwork trolley to form a complete ring lining structure, thereby enhancing the overall stability, load-bearing capacity and durability of the tunnel, while reducing ventilation resistance and improving aesthetics.

[0003] The maintenance of the secondary lining is crucial during tunnel construction and subsequent maintenance. However, the current situation is not optimistic, with inadequate maintenance and insufficient maintenance equipment, which poses many hidden dangers to the long-term quality assurance of the tunnel secondary lining.

[0004] Currently, conventional water trucks and trolleys used for tunnel secondary lining maintenance can only achieve simple spraying in localized areas, making it difficult to comprehensively and effectively cover different locations such as the tunnel top and sidewalls. This fails to meet the requirement of uniform maintenance across the entire cross section, affecting the continuity and efficiency of maintenance work. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in comprehensively and effectively covering different locations like the tunnel top and sidewalls, which fails to meet the requirements of uniform curing across the entire cross-section and affects the quality and efficiency of curing. Therefore, this invention proposes a tunnel secondary lining full-section curing spray assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tunnel secondary lining full-section curing spray assembly includes:

[0008] A water truck, wherein the water truck is equipped with a water storage tank;

[0009] The water tank of the sprinkler truck is equipped with a spray section on the outside, which is used to spray the entire cross section of the secondary lining of the tunnel. The sprinkler truck is equipped with a clamping assembly, which is used to clamp and fix the spray section.

[0010] In one possible design, the spray unit includes a four-way pipe disposed above the water storage tank. Both sides of the four-way pipe are sealed and threadedly connected to main spray pipes. The bottom ends of the two main spray pipes are sealed and threadedly connected to branch spray pipes. A plurality of evenly distributed spray holes are opened on one side of the main spray pipes and the branch spray pipes. Spray heads are sealed and threadedly connected to the spray holes of the main spray pipes and the spray heads are sealed and threadedly connected to the spray holes of the branch spray pipes. A shower head is sealed and threadedly connected to the top of the four-way pipe.

[0011] In one possible design, the clamping assembly includes two mounting brackets symmetrically fixedly disposed on the bottom sides of the sprinkler truck. A support frame is slidably disposed inside each of the two mounting brackets. A pipe clamp seat is fixedly disposed on the outer side of each of the two support frames. A pipe clamp bracket is hinged to one side of each of the two pipe clamp seats. A through bolt passes through the open side of the pipe clamp seat. A U-shaped groove is formed on the open side of the pipe clamp bracket. An adjustment handle is disposed on the outer side of the pipe clamp bracket. A rotating column is rotatably disposed on the inner side of the adjustment handle. The through bolt is threadedly connected to one side of the rotating column. Rubber pads are fixedly disposed on the inner sides of both the pipe clamp seat and the pipe clamp bracket.

[0012] In one possible design, a water pump is fixedly installed on the top of the sprinkler truck next to the water storage tank. The input end of the water pump is fixedly connected to the water storage tank through a connecting pipe, and the output end of the water pump is fixedly connected to a water supply pipe. The other end of the water supply pipe is connected to a four-way pipe with a sealed thread, and a manual valve is installed on the water supply pipe.

[0013] In one possible design, the bottom of the mounting bracket is threaded with a knob bolt, and the bottom of the support bracket has a plurality of evenly distributed pin holes, the top of which can be disengaged and inserted into the pin holes.

[0014] In one possible design, a fixing frame is fixedly installed on the top of the water storage tank, and brackets are symmetrically fixedly installed on both sides of the top of the fixing frame below the two main spray pipes.

[0015] In this application, upon initial use, two brackets are first fixedly installed on both sides of the top of the fixed frame with bolts to support the main sprinkler pipe. Then, the four-way pipe is removed and the main sprinkler pipe is installed on both sides with sealant threads. Note that the threads must be tightened during connection to prevent leakage. Next, the sprinkler branch pipes are connected to the bottom of the two main sprinkler pipes with sealant threads. Then, the spray heads are installed in the spray holes of the multiple main sprinkler pipes in sequence with sealant threads. Then, the spray heads are installed in the spray holes of the multiple branch sprinkler pipes in sequence with sealant threads. Finally, the shower head is connected to the top of the four-way pipe with sealant threads. Then, the water pump is fixedly installed on the top of the sprinkler truck next to the water tank with bolts, and the input end of the water pump is fixedly connected to the water tank with a connecting pipe to ensure that the connection is sealed to prevent leakage. Then, the installed main sprinkler pipe is placed on the two brackets. Then, one end of the water supply pipe is connected to the four-way pipe with sealant threads, and the other end is fixedly connected to the output end of the water pump. There is a manual valve on the water supply pipe for subsequent control of water flow.

[0016] Then, two mounting brackets are symmetrically fixed at the bottom of both sides of the sprinkler truck, ensuring that the mounting brackets are accurately positioned and firmly installed. Then, turn the knob bolt to disengage the top of the knob bolt from the pin hole. Then, pull the support bracket to adjust it, so that the pipe clamp seat and pipe clamp bracket move in the opposite direction to the spray branch pipe. At this time, the pipe clamp bracket is in the unfolded state. When the inner wall of the pipe clamp seat is in contact with the spray branch pipe, turn the pipe clamp bracket so that the pipe clamp seat and pipe clamp bracket wrap around the outside of the spray branch pipe. At this time, the U-shaped groove of the pipe clamp bracket is fitted outside the through bolt. Then, install the adjusting handle on the through bolt through the rotating column and rotate it to rotate the pipe clamp bracket towards the pipe clamp seat and tighten it, thereby firmly clamping the spray branch pipe in the pipe clamp seat and pipe clamp bracket. Then, turn the knob bolt to insert the top of its screw into the pin hole, thereby fixing the position of the support bracket.

[0017] After all installation is complete, inspect the entire sprinkler system, checking that all connections are secure, seals are good, and there are no leaks. Connect the water pump to the power supply, then add an appropriate amount of water to the storage tank to ensure sufficient water for the spraying operation. Turn on the water pump's power switch to start the pump. The pump will begin drawing water from the storage tank through the connecting pipe and delivering it to the sprinkler section via the supply pipe. At this point, slowly open the manual valve to adjust the water flow rate, ensuring the water enters the sprinkler section at a suitable pressure. Then, the water truck is operated to drive slowly. During the drive, the spray nozzles on the main sprinkler pipe spray out fine water mist to evenly spray the top and sides of the tunnel lining. The nozzles on the branch sprinkler pipes spray water with a certain pressure to evenly spray the sides of the tunnel lining. The shower sprays water to spray a large area on the top of the tunnel lining. The front and rear sprayers on the bottom of the water truck spray the front and rear surfaces of the tunnel. Through the movement of the water truck, the maintenance spraying of the entire cross section of the tunnel lining is achieved.

[0018] This utility model has the following beneficial effects:

[0019] This invention utilizes a spray system to achieve effective curing spraying of the entire cross-section of the tunnel lining. The main spray pipe and branch spray pipes work together to spray fine water mist and pressurized water flow through spray nozzles and nozzles, respectively, to evenly spray the top, top side, and side surfaces of the tunnel lining. At the same time, a shower head sprays a large area of ​​the top surface. This multi-layered and all-round spraying method ensures that all parts of the tunnel lining receive sufficient and uniform curing, effectively improving the quality and efficiency of curing.

[0020] This invention utilizes a clamping assembly to flexibly and securely clamp and fix the spray branch pipe (and indirectly assist in fixing the main spray pipe). The pipe clamp seat and pipe clamp frame, in conjunction with rubber pads, achieve a tight wrap, preventing slippage and damage. The clamp can also be quickly tightened and fixed by adjustment, effectively preventing the spray pipe from shaking or shifting during spraying operations, ensuring the stability and uniformity of the spraying operation. At the same time, it facilitates disassembly and maintenance, improving the practicality and ease of operation of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall main structure of a tunnel secondary lining full-section curing spray assembly proposed in this utility model;

[0022] Figure 2 This is a schematic side view of the overall structure of a tunnel secondary lining full-section curing spray assembly proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the spray component structure of a tunnel secondary lining full-section curing spray assembly proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled clamping component of a tunnel secondary lining full-section curing spray assembly proposed in this utility model.

[0025] In the diagram: 1. Sprinkler truck; 2. Water tank; 3. Mounting frame; 4. Water pump; 5. Water supply pipe; 6. Manual valve; 7. Four-way pipe; 8. Main sprinkler pipe; 9. Branch sprinkler pipe; 10. Shower head; 11. Spray head; 12. Spray nozzle; 13. Mounting bracket; 14. Support frame; 15. Pin hole; 16. Knob bolt; 17. Pipe clamp seat; 18. Pipe clamp bracket; 19. Through bolt; 20. Adjusting handle; 21. Rotary column; 22. Rubber pad; 23. Bracket. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In one embodiment

[0028] Reference Figure 1-4 A spray assembly, comprising:

[0029] Sprinkler truck 1 serves as the mobile platform for the entire assembly, on which a water storage tank 2 is installed. The water storage tank 2 is fixed to the sprinkler truck 1 and is used to store the water required for the spraying operation, providing a water source guarantee for subsequent spraying work. Its capacity can meet the spraying needs of the secondary lining of tunnels of a certain length, reducing the number of times water needs to be added and improving work efficiency.

[0030] The spray system, located outside the water storage tank 2, is the core component for completing the full-section spraying of the tunnel lining. The four-way pipe 7, situated above the water storage tank 2, plays a crucial role in water distribution. It divides the water from the pump 4 into multiple directions, supplying the main spray pipe 8 and the sprinklers 10 respectively, ensuring even water distribution to all spray points. The main spray pipe 8 is threadedly connected to both sides of the four-way pipe 7 with sealant, and its bottom end is threadedly connected to the spray branch pipe 9. Multiple spray holes on the main spray pipe 8 provide locations for the installation of the spray heads 11. The main function of the main spray pipe 8 is to guide the water flow to the top and side surfaces of the tunnel lining, where it is sprayed out as a fine water mist (droplet size 50-300μm) through the spray heads 11. The spray system (coverage angle ≥180°) sprays water on the sides for maintenance. The fine water mist adheres better to the surface of the tunnel lining, improving maintenance quality and ensuring that the spraying range covers the corresponding parts of the tunnel lining, thus improving the spraying effect. The spray branch pipe 9 is connected to the spray main pipe 8 and also has multiple spray holes for installing nozzles 12. The spray branch pipe 9 is mainly responsible for guiding the water flow to the sides of the tunnel lining. The nozzles 12 spray water with a certain pressure (the columnar water flow can be sprayed to the designated position on the tunnel wall, with a range of 5-15 meters), achieving uniform spraying of these areas. The shower head 10 is connected to the top of the four-way pipe 7 with a sealing thread and is used to spray the top of the tunnel lining over a large area. The shower head 10 allows the water flow to cover the top of the tunnel lining evenly over a large area, improving spraying efficiency. The diameter of the spray main pipe 8 is larger than the diameter of the spray branch pipe 9, which can ensure that the water pressure difference between each nozzle is ≤0.3MPa.

[0031] The water pump 4 is fixedly installed on the top of the sprinkler truck 1, next to the water storage tank 2. Its input end is fixedly connected to the water storage tank 2 through a connecting pipe, and its output end is fixedly connected to the water supply pipe 5. The function of the water pump 4 is to provide power for the water flow, to pump the water in the water storage tank 2 and deliver it to the spray section, and to ensure that the water flow enters the spray section with appropriate pressure and flow rate to meet the requirements of the spraying operation.

[0032] Water supply pipe 5 connects the output end of water pump 4 and four-way pipe 7, serving as the channel for water flow. A manual valve 6 is installed on water supply pipe 5, which can conveniently control the opening and closing of water flow and adjust the water flow rate. In actual operation, operators can flexibly adjust the water flow rate according to the actual conditions of the tunnel lining and maintenance needs to achieve the best spraying effect.

[0033] The fixing frame 3 is fixedly installed on the top of the water storage tank 2, providing an installation base for the bracket 23. The bracket 23 is symmetrically fixed on both sides of the top of the fixing frame 3, located below the two spray pipes 8. The function of the bracket 23 is to provide initial support for the spray pipes 8, reduce the burden of the weight of the spray pipes 8 on the connection parts, improve the stability of the spray pipes 8, and prevent them from shaking or falling off during the operation of the water truck 1.

[0034] This application can be used in the field of full-section curing spray components for tunnel secondary lining, and can also be used in other fields applicable to this application.

[0035] In another embodiment

[0036] Reference Figure 3-4 A tunnel secondary lining full-section maintenance spray assembly is disclosed, which is applied to the technical field of tunnel secondary lining full-section maintenance spray assembly. The clamping assembly is set on the water truck 1 to clamp and fix the spraying part to ensure the stability of the spraying part during the movement of the water truck 1. The mounting frame 13 is symmetrically fixed on both sides of the bottom of the water truck 1 to provide the installation base for the support frame 14. The bottom of the mounting frame 13 is threaded with a knob bolt 16, which can fix and adjust the position of the support frame 14. The support frame 14 is slidably set inside the mounting frame 13. Multiple evenly distributed pin holes 15 are opened at its bottom. The top of the knob bolt 16 can be disengaged and inserted into the pin hole 15. In this way, the length of the support frame 14 can be easily adjusted to meet the clamping requirements of the spray branch pipe 9 at different positions.

[0037] The pipe clamp seat 17 is fixedly installed on the outside of the support frame 14, and a rubber pad 22 is fixedly installed on its inner side. The pipe clamp seat 17 provides one-sided support for the spray branch pipe 9. The rubber pad 22 can play a buffering and protective role, preventing damage to the spray branch pipe 9 during clamping. The pipe clamp frame 18 is hinged to one side of the pipe clamp seat 17. A U-shaped groove is opened on its open side. An adjustment handle 20 is provided on the outside of the pipe clamp frame 18. A rotating column 21 is rotatably installed on the inside of the adjustment handle 20. A bolt 19 is threaded through and connected to one side of the rotating column 21. By rotating the adjustment handle 20, the pipe clamp frame 18 can be rotated and tightened in the direction of the pipe clamp seat 17, thereby firmly clamping the spray branch pipe 9 in the pipe clamp seat 17 and the pipe clamp frame 18. Similarly, the rubber pad 22 on the inside of the pipe clamp frame 18 can also play a role in protecting the spray branch pipe 9.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the water truck 1 and the water pump 4 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tunnel secondary lining full-face maintenance spraying assembly, characterized in that, include: A water truck (1) is equipped with a water storage tank (2). The water tank (2) of the water truck (1) is equipped with a spray section on the outside. The spray section is used to spray the entire cross section of the secondary lining of the tunnel. The water truck (1) is equipped with a clamping assembly, which is used to clamp and fix the spray section.

2. The full-face maintenance spraying assembly for the second lining of a tunnel according to claim 1, characterized in that, The spray unit includes a four-way pipe (7) located above the water storage tank (2). Both sides of the four-way pipe (7) are sealed with a main spray pipe (8). The bottom ends of the two main spray pipes (8) are sealed with a branch spray pipe (9). A plurality of evenly distributed spray holes are opened on one side of the main spray pipe (8) and the branch spray pipe (9). A spray head (11) is sealed with a thread inside the spray hole of the plurality of main spray pipes (8). A spray head (12) is sealed with a thread inside the spray hole of the plurality of branch spray pipes (9). A shower head (10) is sealed with a thread at the top of the four-way pipe (7).

3. The full-face maintenance spraying assembly for the second lining of a tunnel according to claim 1, characterized in that, The clamping assembly includes two mounting brackets (13) symmetrically fixedly disposed on the bottom of both sides of the sprinkler truck (1). A support frame (14) is slidably disposed inside each of the two mounting brackets (13). A pipe clamp seat (17) is fixedly disposed on the outside of each of the two support frames (14). A pipe clamp bracket (18) is hinged to one side of each of the two pipe clamp seats (17). A through bolt (19) is disposed on the open side of the pipe clamp seat (17). A U-shaped groove is provided on the open side of the pipe clamp bracket (18). An adjustment handle (20) is disposed on the outside of the pipe clamp bracket (18). A rotating column (21) is rotatably disposed on the inside of the adjustment handle (20). The through bolt (19) is threadedly connected to one side of the rotating column (21). Rubber pads (22) are fixedly disposed on the inside of both the pipe clamp seat (17) and the pipe clamp bracket (18).

4. The full-face maintenance spraying assembly for the second lining of a tunnel according to claim 2, characterized in that, A water pump (4) is fixedly installed on the top of the water truck (1) next to the water storage tank (2). The input end of the water pump (4) is fixedly connected to the water storage tank (2) through a connecting pipe. The output end of the water pump (4) is fixedly connected to a water supply pipe (5). The other end of the water supply pipe (5) is sealed and threadedly connected to a four-way pipe (7). A manual valve (6) is installed on the water supply pipe (5).

5. The full-face maintenance spraying assembly for the second lining of a tunnel according to claim 3, characterized in that, The bottom of the mounting bracket (13) is threaded with a knob bolt (16), and the bottom of the support bracket (14) is provided with a plurality of evenly distributed pin holes (15). The top of the knob bolt (16) can be disengaged and inserted into the pin hole (15).

6. The full-face maintenance spraying assembly for the second lining of a tunnel according to claim 1, characterized in that, The top of the water storage tank (2) is fixedly provided with a fixing frame (3), and the top sides of the fixing frame (3) are symmetrically fixedly provided with brackets (23) below the two spray pipes (8).

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