A device for maintaining the second lining of a tunnel

Abstract

This utility model belongs to the field of tunnel maintenance technology and discloses a tunnel secondary lining maintenance device. The water spray pipe is ring-shaped and fits the tunnel secondary lining. One end of the water spray pipe is connected to a water source, and the other end is sealed. Several nozzles are installed at intervals along the arc length of the water spray pipe on its outer side. The top of the scaffolding supports the frame, and the top of the frame is connected to the water spray pipe. Several pulleys are installed at intervals along the tunnel length at the bottom of the frame. The output end of the drive unit inside the frame is connected to any of the pulleys. The drive unit drives the pulleys to move forward or backward along the tunnel length, which in turn drives the frame and the water spray pipe to move forward or backward along the tunnel length, improving maintenance efficiency. Water is introduced through one end of the water spray pipe, and the nozzles spray water onto the fitted secondary lining. The water spray range can cover the secondary lining, thereby providing comprehensive maintenance for the secondary lining and achieving good maintenance results.

Description

Technical Field

[0001] This utility model relates to the field of tunnel maintenance technology, and in particular to a tunnel secondary lining maintenance device. Background Technology

[0002] The construction of secondary lining (referred to as "secondary lining") concrete is an important part of tunnel engineering. The secondary lining fits against the annular inner wall of the tunnel, which not only plays a role in bearing the pressure of the surrounding rock, but also plays an important role in waterproofing and moisture prevention. After the secondary lining is poured, it should be cured in time to keep the concrete surface moist and prevent the formation of drying shrinkage cracks.

[0003] During the construction of secondary lining concrete, scaffolding and small formwork are often used for construction operations. However, due to the scaffolding being erected inside the tunnel, the space inside the tunnel is small before or during the dismantling of the scaffolding, making it difficult for maintenance vehicles to enter and exit smoothly for maintenance operations. This results in maintenance not being carried out smoothly and the maintenance scope being greatly limited. Utility Model Content

[0004] The purpose of this utility model is to provide a tunnel secondary lining maintenance device that can perform all-round maintenance on the basis of scaffolding, with good maintenance effect and high efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A tunnel secondary lining maintenance device, comprising:

[0007] The maintenance component includes a water spray pipe and nozzles. The water spray pipe is ring-shaped and fits against the secondary lining of the tunnel. One end of the water spray pipe is connected to a water source, and the other end is sealed. Several nozzles are installed at intervals along the arc length of the water spray pipe on its outer side.

[0008] The walking assembly includes a frame, a drive unit, and a walking unit. The frame is supported on the scaffold, and the top of the frame is connected to the water spray pipe. The walking unit includes a plurality of pulleys spaced apart at the bottom of the frame along the tunnel length direction. The drive unit is mounted on the frame, and the output end of the drive unit is connected to any of the pulleys, configured to drive the pulleys to move forward or backward along the tunnel length direction.

[0009] Preferably, the water spray pipe has several water outlet holes spaced apart along its arc length on its outer side, and the nozzle corresponds to each water outlet hole. A nut is fixed to the outer side of each water outlet hole, and the outer wall of the nozzle is provided with external threads. The nozzle is screwed to the nut.

[0010] Preferably, the drive unit includes a forward drive component and a reverse drive component, both of which are connected to any of the pulleys.

[0011] Preferably, the walking assembly further includes a front limiter and a rear limiter, the front limiter being installed at one end of the frame along the tunnel length direction, and the rear limiter being installed at the other end of the frame along the tunnel length direction.

[0012] Preferably, two front limiters are installed at intervals at one end of the frame along the tunnel length direction, and two rear limiters are installed at intervals at the other end of the frame along the tunnel length direction.

[0013] Preferably, the tunnel secondary lining maintenance device further includes a support beam, which is installed on the top of the scaffold along the tunnel length direction. A track is installed on the top of the support beam, which is set along the tunnel length direction, and the pulley rotation is limited to the track.

[0014] Preferably, the tunnel secondary lining maintenance device includes two traveling units, which are installed at intervals at the bottom of the frame perpendicular to the tunnel length direction. Two tracks are installed at intervals at the top of the support beam perpendicular to the tunnel length direction, and the pulleys in the two traveling units are respectively limited to rotating on the two tracks.

[0015] Preferably, the tunnel secondary lining maintenance device further includes a water supply component, which includes a water storage tank, a booster pump, and a water supply pipe. One end of the water supply pipe is connected to the water storage tank, and the other end is sealed and connected to the spray pipe. The booster pump is installed on the water supply pipe and is configured to pump water from the water storage tank into the water supply pipe and into the spray pipe.

[0016] Preferably, the drive unit includes a forward drive and a backward drive, the output end of the forward drive is connected to any of the pulleys in one of the walking units, and the output end of the backward drive is connected to any of the pulleys in the other walking unit.

[0017] Preferably, a support frame is installed on the top of the frame. The top of the support frame is annular and fits against the inner side of the water spray pipe. Several fasteners are installed at intervals on the top of the support frame, and the fasteners are fastened to the water spray pipe.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a tunnel secondary lining maintenance device, including a maintenance component and a traveling component. The maintenance component includes a water spray pipe and nozzles. The water spray pipe is ring-shaped and fits against the tunnel secondary lining. One end of the water spray pipe is connected to a water source, and the other end is sealed. Several nozzles are installed at intervals along the arc length of the water spray pipe. The traveling component includes a frame, a drive unit, and a traveling unit. The frame is supported by scaffolding, and the top of the frame is connected to the water spray pipe. The traveling unit includes several pulleys installed at intervals along the tunnel length at the bottom of the frame. The drive unit is installed on the frame, and the output end of the drive unit is connected to any pulley. The drive unit drives the pulleys to move forward or backward along the tunnel length, thereby driving the frame and the water spray pipe to move forward or backward along the tunnel length, improving efficiency. Water is introduced through one end of the water spray pipe, and the nozzles spray water onto the fitted secondary lining. The spray range can cover the secondary lining, thus providing comprehensive maintenance for the secondary lining with good maintenance effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a tunnel secondary lining maintenance device provided in an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a partial structural schematic diagram of the maintenance component provided in this embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the water supply component provided in this embodiment of the utility model;

[0024] Figure 5 This is a partial structural schematic diagram of a tunnel secondary lining maintenance device provided in an embodiment of this utility model;

[0025] Figure 6 This is a top view of the walking component provided in an embodiment of the present utility model;

[0026] Figure 7 This is a partial structural schematic diagram of the walking component provided in an embodiment of the present utility model.

[0027] In the picture:

[0028] 10. Secondary lining; 20. Scaffolding; 11. Sprinkler pipe; 12. Sprinkler head; 13. Nut; 2. Walking assembly; 21. Frame; 22. Drive unit; 221. Forward drive component; 222. Reverse drive component; 23. Walking unit; 231. Pulley; 24. Front limiter; 25. Rear limiter; 3. Water supply assembly; 31. Water storage tank; 32. Booster pump; 33. Water supply pipe; 34. Inlet pipe; 4. Support beam; 5. Support frame; 6. Track. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Because scaffolding is often used during the construction of secondary lining concrete, the internal space of the tunnel is small before or during the dismantling of the scaffolding, making it difficult for maintenance vehicles to enter and exit smoothly, which hinders the smooth progress of maintenance work and greatly limits the scope of maintenance.

[0034] Therefore, this embodiment provides a tunnel secondary lining maintenance device that can perform comprehensive maintenance on the secondary lining based on scaffolding, with good maintenance effect and high efficiency.

[0035] Please see Figures 1 to 7A tunnel secondary lining maintenance device includes a maintenance component and a traveling component 2. The traveling component 2 is slidably installed on the scaffold 20, and the maintenance component is connected to the traveling component 2. The traveling component 2 drives the maintenance component to move along the tunnel length direction to maintain the secondary lining 10 inside the tunnel, thereby improving maintenance efficiency. Furthermore, the water spraying range of the maintenance component covers the secondary lining 10, thus providing comprehensive maintenance for the secondary lining 10 and achieving good maintenance results.

[0036] Specifically, please refer to Figure 1 and Figure 2 The maintenance components include a water spray pipe 11 and a nozzle 12. The water spray pipe 11 has a ring-shaped structure to fit against the tunnel secondary lining 10. Further, one end of the water spray pipe 11 is connected to a water source, and the other end is sealed. Several water outlet holes are spaced apart along the arc length of the outer side of the water spray pipe 11. The nozzle 12 is correspondingly installed with each water outlet hole and is sealed to the corresponding water outlet hole. The arc length of the water spray pipe 11 is determined by the arc length of the secondary lining 10; preferably, the arc length of the water spray pipe 11 is equal to the arc length of the secondary lining 10.

[0037] With the above setup, water is introduced into one end of the water spray pipe 11 and enters the nozzle 12 through the water outlet. The nozzle 12 sprays water to maintain the bonded secondary lining 10. The water spray range can cover the secondary lining 10, thus providing comprehensive maintenance for the secondary lining 10 with good maintenance effect.

[0038] Optionally, the water spray pipe 11 is made of galvanized steel pipe. The water spray pipe 11 is bent into an arc shape according to the shape of the secondary lining 10 using a cold bending machine to ensure the water spray pipe 11 fits snugly against the secondary lining 10. In this embodiment, the wall thickness of the water spray pipe 11 is 3mm to accommodate high-pressure water flow. The arc length of the water spray pipe 11 is 25m, and the diameter of two adjacent water outlets is 2m.

[0039] Please see Figures 1 to 3 In practical use, the water spray pipe 11 can be segmented for reuse. Two end segments are reserved, with internal or external threads machined at one end of each segment, and internal and external threads machined at both ends of the remaining segments to facilitate assembly. For example, in this embodiment, the water spray pipe 11 is cut into 5 segments along its arc length, each segment having an arc length of 5m.

[0040] Furthermore, this embodiment provides a connection method between the nozzle 12 and the water outlet. For details, please refer to [link to relevant documentation]. Figure 3 Nuts 13 are fixed to the outside of the water outlet, and external threads are machined on the outer wall of each nozzle 12, so that the nozzle 12 can be screwed to the corresponding nut 13, thereby realizing the connection between the nozzle 12 and the water outlet. Preferably, the nut 13 is welded to the water spray pipe 11.

[0041] Please see Figure 1 The tunnel secondary lining maintenance device provided in this embodiment also includes a water supply component 3, which is used to provide a water source for the spray pipe 11. Specifically, please refer to... Figure 1 and Figure 4 The water supply component 3 includes a water storage tank 31, a booster pump 32, and a water supply pipe 33. One end of the water supply pipe 33 is connected to the water storage tank 31, and the other end is sealed and connected to the spray pipe 11. The booster pump 32 is installed on the water supply pipe 33. When the booster pump 32 is started, it pumps water from the water storage tank 31 into the water supply pipe 33 and further into the spray pipe 11.

[0042] Optionally, the water storage tank 31 is welded from steel plates and has a rectangular structure of 1.2m × 1.2m × 1.5m, with a volume of 2.2m³. 3 The water supply pipe 33 is made of high-pressure steel wire hose, and the booster pump 32 has an operating power of 7.5KW.

[0043] Preferably, the water supply component 3 further includes a water level controller and an inlet pipe 34. The inlet pipe 34 is connected to a water source, and the water level controller is installed on the inlet pipe 34. At the same time, a water level line is set on the water storage tank 31. The water level controller monitors the water level of the water storage tank 31 in real time and determines whether the water level is lower than the water level line. When the water level of the water storage tank 31 is lower than the water level line, the water level controller connects the inlet pipe 34 to replenish the water in the water storage tank 31, ensuring that the water in the water storage tank 31 always meets the water consumption requirements.

[0044] Optionally, the water supply pipe 33 is made of Φ32 PPR water pipe.

[0045] Please see Figure 2 and Figure 5 The tunnel secondary lining maintenance device provided in this embodiment also includes a support beam 4, which is arranged along the length of the tunnel and installed on the top of the scaffold 20 to provide support for the walking assembly 2.

[0046] Optionally, the support beam 4 is assembled from several standard sections. Each standard section has several bolt holes spaced apart on its side. The connection between two adjacent standard sections is achieved by bolts being screwed into the corresponding bolt holes on the two standard sections one by one. It should be noted that the number of standard sections depends on the length of the secondary lining 10 that needs to be cured, and is not specifically limited here.

[0047] Preferably, the centerline of the standard section coincides with the centerline of the tunnel to improve the stability of the overall structure.

[0048] In this embodiment, the standard section is formed by welding angle steel to form a support frame, and reinforcing angle steel is welded on the support frame for reinforcement. For example, the standard section is 1.5m long, 0.6m high, and 1.10m wide. The angle steel used for the support frame is 7*7, and the reinforcing angle steel is 3*3.

[0049] Further, please refer to Figure 5 , Figure 6 and Figure 7 The walking assembly 2 includes a frame 21, a drive unit 22, and a walking unit 23. The frame 21 is supported by a support beam 4 installed on the top of the scaffold 20, and thus supports the scaffold 20. The top of the frame 21 is connected to a water spray pipe 11. The walking unit 23 includes a plurality of pulleys 231 installed at intervals along the tunnel length direction at the bottom of the frame 21. The drive unit 22 is installed on the frame 21. The output end of the drive unit 22 is connected to any one of the pulleys 231. When the drive unit 22 is started, it drives one of the pulleys 231 to rotate, and drives the other pulleys 231 to rotate synchronously, thereby driving the pulleys 231 to move the frame 21 and the water spray pipe 11 forward or backward along the tunnel length direction.

[0050] For example, please refer to Figure 5 In this embodiment, a support frame 5 is installed on the top of the frame 21. The top of the support frame 5 is ring-shaped and fits against the inner side of the water spray pipe 11. Furthermore, several fasteners are installed at intervals on the top of the support frame 5 to securely connect the water spray pipe 11. It should be noted that the fasteners used to bind the pipes are common structures in the prior art, and their structure will not be described in detail here.

[0051] Further, please refer to Figure 6 The walking component 2 also includes a front limiter 24 and a rear limiter 25. The front limiter 24 is installed at one end of the frame 21 along the tunnel length direction, and the rear limiter 25 is installed at the other end of the frame 21 along the tunnel length direction. By installing the front limiter 24 and the rear limiter 25, the drive unit 22 is activated, driving one of the pulleys 231 to rotate, and driving the other pulleys 231 to rotate synchronously. This drives the pulleys 231 to move the frame 21 and the water spray pipe 11 forward along the tunnel length direction. When the movement reaches the end point, the front limiter 24 is triggered to work, and the drive unit 22 drives the pulleys 231 to move the frame 21 and the water spray pipe 11 backward along the tunnel length direction. When the movement reaches the end point, the rear limiter 25 is triggered to work, and the drive unit 22 again drives the pulleys 231 to move the frame 21 and the water spray pipe 11 forward along the tunnel length direction, thus realizing reciprocating movement.

[0052] It should be noted that the linkage between the limit switch and the drive component is existing technology, and will not be elaborated on here.

[0053] Preferably, the support frame 5 is assembled using I-beams.

[0054] To limit the movement direction of the water spray pipe 11, please refer to... Figure 5 In this embodiment, a track 6 is also installed on the top of the support beam 4. The track 6 is set along the length of the tunnel, and several pulleys 231 are all limited to rotate on the track 6. By limiting the pulleys 231, the movement direction of the water spray pipe 11 is limited, and the movement direction is controlled to be parallel to the length of the tunnel.

[0055] The drive unit 22 provided in this embodiment includes a forward drive component 221 and a backward drive component 222. Both the forward drive component 221 and the backward drive component 222 are connected to any pulley 231. When the forward drive component 221 is activated, one of the pulleys 231 is driven to rotate, and the other pulleys 231 are driven to rotate synchronously. In turn, the pulleys 231 drive the frame 21 and the water spray pipe 11 to move forward along the tunnel length direction. When the backward drive component 222 is activated, one of the pulleys 231 is driven to rotate, and the other pulleys 231 are driven to rotate synchronously. In turn, the pulleys 231 drive the frame 21 and the water spray pipe 11 to move backward along the tunnel length direction.

[0056] Preferably, bearings are installed at the output ends of both the forward drive member 221 and the reverse drive member 222. The bearings are fixed to any pulley 231 and are coaxially arranged with the pulley 231.

[0057] Further, please refer to Figure 7 To improve the stability of the frame 21, in this embodiment, two walking units 23 are installed at intervals at the bottom of the frame 21. The two walking units 23 are arranged at intervals perpendicular to the tunnel length direction to balance the force on the bottom of the frame 21 and ensure its stability.

[0058] Accordingly, two tracks 6 are installed at intervals on the top of the support beam 4 perpendicular to the tunnel length direction, and the pulleys 231 in the two walking units 23 are respectively limited to rotating on the two tracks 6.

[0059] Accordingly, two front limiters 24 are installed at intervals at one end of the frame 21 along the tunnel length direction, and two rear limiters 25 are installed at intervals at the other end of the frame 21 along the tunnel length direction, so as to improve the reliability of the triggering of the front limiters 24 and the rear limiters 25.

[0060] Furthermore, since two walking units 23 are installed at intervals at the bottom of the frame 21, the output end of the forward drive 221 is connected to any pulley 231 in one of the walking units 23, and the output end of the backward drive 222 is connected to any pulley 231 in the other walking unit 23.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for the maintenance of the second lining of a tunnel, characterized in that, include: The maintenance component includes a water spray pipe (11) and nozzles (12). The water spray pipe (11) is annular and fits against the secondary lining (10) of the tunnel. One end of the water spray pipe (11) is connected to a water source and the other end is blocked. Several nozzles (12) are installed at intervals along the arc length of the outer side of the water spray pipe (11). The walking assembly (2) includes a frame (21), a drive unit (22), and a walking unit (23). The frame (21) is supported on the scaffold (20). The top of the frame (21) is connected to the water spray pipe (11). The walking unit (23) includes a plurality of pulleys (231) spaced apart at the bottom of the frame (21) along the tunnel length direction. The drive unit (22) is installed on the frame (21), and the output end of the drive unit (22) is connected to any of the pulleys (231), configured to drive the pulleys (231) to move forward or backward along the tunnel length direction.

2. A device for maintaining a second lining of a tunnel according to claim 1, characterized in that The water spray pipe (11) has several water outlet holes spaced apart along its arc length on its outer side. The nozzle (12) corresponds to each of the water outlet holes. A nut (13) is fixed on the outer side of the water outlet hole, and the outer wall of the nozzle (12) is provided with external threads. The nozzle (12) is screwed to the nut (13).

3. The device for maintaining the second lining of a tunnel according to claim 1, characterized in that, The drive unit (22) includes a forward drive (221) and a backward drive (222), both of which are connected to any of the pulleys (231).

4. The tunnel secondary lining maintenance device according to claim 1, characterized in that, The walking assembly (2) also includes a front limiter (24) and a rear limiter (25). The front limiter (24) is installed at one end of the frame (21) along the tunnel length direction, and the rear limiter (25) is installed at the other end of the frame (21) along the tunnel length direction.

5. A device for maintaining a second lining of a tunnel according to claim 4, characterized in that Two front limiters (24) are installed at intervals at one end of the frame (21) along the tunnel length direction, and two rear limiters (25) are installed at intervals at the other end of the frame (21) along the tunnel length direction.

6. A device for maintaining a second lining of a tunnel according to any one of claims 1 to 5, characterized in that, The tunnel secondary lining maintenance device also includes a support beam (4), which is installed on the top of the scaffold (20) along the tunnel length direction. A track (6) is installed on the top of the support beam (4), which is set along the tunnel length direction, and the pulley (231) is limited to rotating on the track (6).

7. A tunnel secondary lining curing device according to claim 6, characterized in that, The tunnel secondary lining maintenance device includes two walking units (23), which are installed at intervals at the bottom of the frame (21) perpendicular to the tunnel length direction. Two tracks (6) are installed at intervals at the top of the support beam (4) perpendicular to the tunnel length direction. The pulleys (231) in the two walking units (23) are respectively limited to rotating on the two tracks (6).

8. A tunnel secondary lining maintenance device according to any one of claims 1-5, characterized in that, The tunnel secondary lining maintenance device also includes a water supply component (3), which includes a water storage tank (31), a booster pump (32), and a water supply pipe (33). One end of the water supply pipe (33) is connected to the water storage tank (31), and the other end is sealed and connected to the spray pipe (11). The booster pump (32) is installed on the water supply pipe (33) and is configured to pump water from the water storage tank (31) into the water supply pipe (33) and into the spray pipe (11).

9. A device for maintaining a second lining of a tunnel according to claim 8, characterized in that The drive unit (22) includes a forward drive (221) and a backward drive (222). The output end of the forward drive (221) is connected to any of the pulleys (231) in one of the walking units (23), and the output end of the backward drive (222) is connected to any of the pulleys (231) in the other walking unit (23).

10. A device for maintaining a second lining of a tunnel according to any one of claims 1 to 5, characterized in that, A support frame (5) is installed on the top of the frame (21). The top of the support frame (5) is annular and fits the inner side of the water spray pipe (11). Several fasteners are installed at intervals on the top of the support frame (5), and the fasteners are fastened to the water spray pipe (11).

Images