A tunnel lining concrete spraying maintenance device

Abstract

The utility model relates to tunnel trolley technical field, concretely is a kind of tunnel lining concrete spraying maintenance device, including maintenance trolley main body, water tank, water pump and spraying system, install multiple water tanks on maintenance trolley main body, water pump is connected in water tank, spraying system is connected on maintenance trolley main body, spraying system is by spraying unit and adjusting unit composition, adjusting unit is connected with maintenance trolley main body, and spraying unit is set on adjusting unit to make it present arc structure adaptation tunnel inner wall. In the utility model, multiple first telescopic devices are radially distributed, can be quickly adapted to different hole diameter tunnels, arc plate and the roller set on mounting frame cooperate, make flexible water pipe bend into the arc structure matched with tunnel inner wall under the vertical displacement drive of roller, realize full-face uniform spraying, when adjusting plate moves along arc plate axis linearly, two layers of different shape sub-curves make single linear drive can realize the nonlinear or segmented change of roller height.

Description

Technical Field

[0001] This utility model relates to the field of tunnel trolley technology, and specifically to a tunnel lining concrete spraying curing device. Background Technology

[0002] Concrete curing involves artificially creating specific humidity and temperature conditions to allow freshly poured concrete to harden and strengthen normally or at an accelerated pace. The gradual hardening and strength gain of concrete is a result of cement hydration, which requires specific temperature and humidity conditions.

[0003] Chinese Patent No. CN222066771U discloses a variable-diameter trolley suitable for secondary lining maintenance in tunnel engineering. Its key feature is that it includes a trolley frame equipped with multiple retractable spray systems. These spray systems are arranged in a circumferential or arc-shaped spraying range during their respective extension and retraction. The advantages of this invention are: by employing retractable spray systems, it can adapt to construction in tunnels with different diameters or varying diameters, effectively improving the trolley's adaptability. When the tunnel diameter is large, the entire spray system can be deployed to spray the secondary lining concrete; when the tunnel diameter is small or changes from large to small, the central spray system can be retracted, bringing the top and bottom spray systems closer together to spray the secondary lining concrete, providing high flexibility. Each spray system is equipped with an independent water tank, ensuring that the spraying water does not interfere with each other.

[0004] However, the above-mentioned technical solutions only use rigid pipes, and the extension and retraction of the sprinkler system can only adjust the overall coverage range (such as expanding the entire pipe to cover the large diameter and retracting the middle pipe to cover the small diameter), but cannot accurately adapt to the continuous changes in the diameter of the hole. When the diameter of the hole does not match the preset length of the pipe, problems such as "the pipe is too long, causing water to overflow the wall" or "the pipe is too short, causing incomplete coverage" are likely to occur, resulting in water waste or localized missed spraying. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a spray curing device for tunnel lining concrete.

[0006] The technical solution of this utility model is as follows: A tunnel lining concrete spray curing device includes a curing trolley body with multiple water tanks installed thereon, each tank connected to a water pump; a spraying system connected to the curing trolley body, the spraying system consisting of spraying units and an adjusting unit, the adjusting unit being connected to the curing trolley body, the spraying units on the adjusting unit being arranged in an arc shape to adapt to the tunnel inner wall; the adjusting unit includes a first telescopic device, an arc plate, rollers, and adjusting components, multiple first telescopic devices being connected to the curing trolley body, the telescopic ends of the first telescopic devices being connected to the arc plate, an installation frame connected to the arc plate, multiple rollers being installed on the installation frame, and adjusting components being provided. The mounting frame has a notch. The adjusting component includes a second telescopic device and an adjusting plate. The second telescopic device is connected to the arc-shaped plate, and the telescopic end of the second telescopic device is connected to the adjusting plate. The adjusting plate has a curved surface that contacts the roller. When the adjusting plate moves linearly along the axis of the arc-shaped plate through the notch of the mounting frame, the curved surface contacts the roller, causing the roller height to change to adapt to the inner wall of the tunnel. The spraying unit includes a connecting pipe, a flexible water pipe, and spray heads. The number of connecting pipes is adapted to the water tank. The two ends of the connecting pipe are connected to the flexible water pipe and the water pump outlet, respectively. The flexible water pipe is placed on an arc-shaped structure composed of multiple rollers. Spray heads distributed in an array and facing the inside of the tunnel are connected to the flexible water pipe.

[0007] Preferably, the roller consists of a support shaft, a sliding seat, and a wheel body. Both ends of the support shaft are rotatably connected to the sliding seat, the sliding seat is slidably connected in a sliding groove opened on the mounting frame, and the wheel body is connected to the support shaft and contacts the flexible water pipe.

[0008] Preferably, a flexible protective sleeve is fitted onto the wheel body.

[0009] Preferably, the sliding grooves on the mounting frame are all straight grooves extending vertically, and the sliding seat can only move vertically.

[0010] Preferably, there are 5-6 first telescopic devices, which are radially distributed along the circumference of the maintenance trolley body.

[0011] Preferably, the thickness of the notch on the mounting frame is greater than the thickness of the adjustment plate.

[0012] Preferably, the curved surface of the adjustment plate is provided with at least two layers of sub-surfaces along its axial direction, and each layer of sub-surfaces has a different shape.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: In this invention, multiple first telescopic devices are radially distributed to quickly adapt to tunnels of different diameters. The arc-shaped plate cooperates with the roller assembly on the mounting frame, causing the flexible water pipe to bend into an arc-shaped structure that matches the inner wall of the tunnel under the vertical displacement drive of the rollers. This avoids the problems of "water overflowing the wall" or "incomplete coverage" caused by the mismatch in length of traditional rigid pipes, achieving uniform spraying across the entire cross-section and significantly improving the humidity uniformity and quality stability of concrete curing. When the adjusting plate moves linearly along the axis of the arc-shaped plate, its curved surface contacts the rollers, driving the roller height to change. The specially designed at least two layers of sub-curved surfaces with different shapes enable non-linear or segmented changes in roller height to be achieved with a single linear drive, thereby accurately fitting the complex tunnel cross-section that changes from gradual to rapid changes and eliminating spray blind spots. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 for Figure 1 Enlarged view of the structure at point A; Figure 3 This is a cross-sectional view of the adjustment plate; Figure 4 This is a cross-sectional view of the adjustment component; Reference numerals in the attached drawings: 1. Main body of the maintenance trolley; 2. Water tank; 3. Spraying unit; 4. Adjustment unit; 5. First telescopic device; 6. Arc plate; 7. Roller; 8. Adjusting component; 9. Mounting frame; 10. Second telescopic device; 11. Adjustment plate; 12. Connecting pipe; 13. Flexible water pipe; 14. Spray head; 15. Support shaft; 16. Sliding seat; 17. Wheel body; 18. Flexible protective sleeve. Detailed Implementation

[0015] Example 1, as Figures 1-4As shown, this utility model proposes a tunnel lining concrete spray curing device, including a curing trolley body 1, water tanks 2, water pumps, and a spraying system. Multiple water tanks 2 are installed on the curing trolley body 1, and each water tank 2 is connected to a water pump; the water pumps are selected, but are not limited to, submersible pumps. The spraying system is connected to the curing trolley body 1 and consists of spraying units 3 and adjusting units 4. The adjusting units 4 are connected to the curing trolley body 1, and the spraying units 3 are arranged on the adjusting units 4 to form an arc-shaped structure to adapt to the tunnel wall. The adjusting units 4 include a first telescopic device 5, an arc-shaped plate 6, rollers 7, and adjusting components 8. Multiple first telescopic devices 5 are connected to the curing trolley body 1; the first telescopic devices 5 are selected, but are not limited to, hydraulic cylinders, and the hydraulic cylinders are connected to externally pre-set hydraulic equipment or pipelines; the telescopic ends of the first telescopic devices 5 are all connected to the arc-shaped plates 6, and mounting frames 9 are connected to the arc-shaped plates 6. Multiple rollers 7 are installed on the mounting frame 9. An adjusting component 8 is installed on the mounting frame 9, and a notch is provided on the mounting frame 9. The adjusting component 8 includes a second telescopic device 10 and an adjusting plate 11. The second telescopic device 10 is connected to the arc plate 6. Bellows protective covers are fitted on both the first telescopic device 5 and the second telescopic device 10, which can effectively block dust, water vapor and mud in the tunnel from entering the telescopic device, prevent wear of seals and corrosion of metal parts, extend the service life of the telescopic device and reduce the maintenance frequency. The telescopic end of the second telescopic device 10 is connected to the adjusting plate 11. The second telescopic device 10 is selected from, but is not limited to, a hydraulic cylinder, which is connected to a pre-set hydraulic device or pipeline. The adjusting plate 11 has a curved surface that contacts the rollers 7. When the adjusting plate 11 moves linearly along the axis of the arc plate 6 through the notch of the mounting frame 9, the curved surface contacts the rollers 7, so that the height of the rollers 7 changes to adapt to the inner wall of the tunnel. The curved surface of the adjusting plate 11 is provided with at least two layers of sub-curved surfaces along its axial direction, and each layer of sub-curved surfaces has a different shape. The curved surface of the adjusting plate 11 enables the adjusting plate 11 to achieve non-linear or segmented changes in the height of the roller 7 in a single linear drive, thereby allowing the flexible water pipe 13 to accurately fit the complex tunnel cross-section that changes from gradual to rapid, avoiding local poor fit or spray blind spots caused by traditional single inclined surface or single curvature surface, and significantly improving the uniformity and adaptability of maintenance. The sprinkler unit 3 includes a connecting pipe 12, a flexible water pipe 13, and a sprinkler head 14. The number of connecting pipes 12 is adapted to the water tank 2. The two ends of the connecting pipe 12 are connected to the flexible water pipe 13 and the water pump outlet, respectively. The flexible water pipe 13 is placed on an arc-shaped structure composed of multiple rollers 7. Sprinkler heads 14 are connected in an array and facing the inside of the tunnel on the flexible water pipe 13.

[0016] Example 2, as Figures 2-4 As shown, this utility model proposes a tunnel lining concrete spray curing device. Compared with Embodiment 1, this embodiment describes the detailed structure of the adjustment unit 4. The roller 7 consists of a support shaft 15, a sliding seat 16, and a wheel body 17. Both ends of the support shaft 15 are rotatably connected to the sliding seat 16. The sliding seat 16 is slidably connected in a sliding groove opened on the mounting frame 9. The wheel body 17 is connected to the support shaft 15 and contacts the flexible water pipe 13. The sliding seat 16 can move vertically along the sliding groove of the mounting frame 9, so that the roller 7 can rotate during the adjustment process to reduce friction with the flexible water pipe 13, and can be accurately positioned in the vertical direction, improving the adjustment flexibility and extending the water pipe life. A flexible protective sleeve 18 is fitted on the wheel body 17. The flexible protective sleeve 18 is made of, but is not limited to, rubber material, which can effectively buffer the hard contact between the wheel body 17 and the flexible water pipe 13, prevent the water pipe surface from being worn or indented. At the same time, the protective sleeve is corrosion-resistant and anti-aging, which improves the durability and maintenance convenience of the roller 7 in humid and dusty tunnel environments. The sliding grooves on the mounting frame 9 are all straight grooves extending vertically, and the sliding seat 16 can only move vertically; the sliding grooves prevent the roller 7 from horizontally shifting or rotating during the adjustment process, thereby ensuring the accuracy of the height adjustment of the roller 7 and the stability of the curvature of the flexible water pipe 13. The number of the first telescopic device 5 is 5-6, which are radially distributed along the circumference of the maintenance trolley body 1; the first telescopic device 5 can adjust the position of the arc plate 6 synchronously or independently from multiple directions to achieve rapid adaptation to tunnels of different diameters, improve the versatility and structural stability of the device, and avoid the arc plate 6 from tilting due to unilateral telescopic movement. The thickness of the notch on the mounting frame 9 is greater than the thickness of the adjusting plate 11. This ensures that the adjusting plate 11 will not interfere with or get stuck on the edge of the notch during linear movement, thus ensuring smooth movement of the adjusting plate 11 and improving the reliability and response speed of the height adjustment of the roller 7.

[0017] In summary, when using this utility model, the main body 1 of the maintenance trolley is moved to the tunnel lining section to be maintained, so that the arc-shaped plate 6 of the spraying system is roughly aligned with the inner wall of the tunnel. According to the current tunnel diameter, 5-6 radially distributed first telescopic devices 5 are activated. The telescopic ends of each first telescopic device 5 extend and retract independently, causing the arc-shaped plate 6 to move radially closer to or away from the inner wall of the tunnel, thereby adapting the distance between the mounting frame 9 and the inner wall of the tunnel to the current tunnel diameter. Then, the second telescopic device 10 fixed to the outer arc surface of the arc-shaped plate 6 is activated. Its telescopic end pushes or pulls the adjusting plate 11 to move linearly along the axial direction of the arc-shaped plate 6. The adjusting plate 11 passes through the notch on the mounting frame 9, and a sub-curved surface is provided on it to contact each roller 7. The sub-curved surface has a different shape so that the height of the roller 7 changes, allowing the roller 7 to slide along the sliding groove. Each roller 7 During vertical displacement, the upper wheel 17 contacts the outer surface of the flexible water pipe 13. Through compression or stretching, the flexible water pipe 13 forms an arc or horseshoe shape along the arc structure formed by the rollers 7. The connecting pipe 12 delivers water pumped from the water tank 2 to the flexible water pipe 13. The array of spray heads 14 on the flexible water pipe 13 sprays curing water evenly towards the inside of the tunnel, ensuring that the concrete surface is continuously moist to meet the humidity conditions required for cement hydration. Since the curved surface of the adjusting plate 11 is composed of sub-curved surfaces of different shapes combined along the axial direction, a single linear drive can achieve non-linear change of the height of the rollers 7, enabling the flexible water pipe 13 to accurately fit the complex tunnel cross-section from gradual to rapid change, avoiding local poor fit or spray blind spots caused by traditional single inclined or single curvature curved surfaces, and significantly improving the uniformity and adaptability of curing.

[0018] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A spray curing device for tunnel lining concrete, characterized in that, include The main body of the maintenance trolley (1) is equipped with multiple water tanks (2), and each water tank (2) is connected to a water pump; The spraying system is connected to the main body (1) of the maintenance trolley. The spraying system consists of a spraying unit (3) and an adjustment unit (4). The adjustment unit (4) is connected to the main body (1) of the maintenance trolley. The spraying unit (3) is set on the adjustment unit (4) to make it arc-shaped to fit the inner wall of the tunnel. The adjustment unit (4) includes a first telescopic device (5), an arc plate (6), rollers (7) and an adjustment component (8). Multiple first telescopic devices (5) are connected to the main body (1) of the maintenance trolley. The telescopic ends of the first telescopic devices (5) are all connected to the arc plate (6). An installation frame (9) is connected to the arc plate (6). Multiple rollers (7) are provided on the installation frame (9). The adjustment component (8) is provided on the installation frame (9). The installation frame (9) has a notch. The adjustment component (8) includes a second telescopic device (10) and an adjustment plate (11). The second telescopic device (10) is connected to the arc plate (6). The telescopic end of the second telescopic device (10) is connected to the adjustment plate (11). The adjustment plate (11) has a curved surface that contacts the rollers (7). When the adjustment plate (11) moves linearly along the axis of the arc plate (6) through the notch of the installation frame (9), the curved surface contacts the rollers (7), causing the height of the rollers (7) to change to adapt to the inner wall of the tunnel. The sprinkler unit (3) includes a connecting pipe (12), a flexible water pipe (13), and a sprinkler head (14). The number of connecting pipes (12) is adapted to the water tank (2). The two ends of the connecting pipe (12) are connected to the flexible water pipe (13) and the water pump outlet, respectively. The flexible water pipe (13) is placed on an arc-shaped structure composed of multiple rollers (7). Sprinkler heads (14) are connected in an array and facing the inside of the tunnel on the flexible water pipe (13).

2. The tunnel lining concrete spray curing device according to claim 1, characterized in that, The roller (7) consists of a support shaft (15), a sliding seat (16) and a wheel body (17). Both ends of the support shaft (15) are rotatably connected to the sliding seat (16). The sliding seat (16) is slidably connected in the sliding groove opened on the mounting frame (9). The wheel body (17) is connected to the support shaft (15) and contacts the flexible water pipe (13).

3. The tunnel lining concrete spray curing device according to claim 2, characterized in that, A flexible protective sleeve (18) is fitted on the wheel body (17).

4. The tunnel lining concrete spray curing device according to claim 2, characterized in that, The sliding grooves on the mounting frame (9) are all straight grooves extending vertically, and the sliding seat (16) can only move vertically.

5. The tunnel lining concrete spray curing device according to claim 1, characterized in that, The number of the first telescopic device (5) is 5-6, which are radially distributed along the circumference of the maintenance trolley body (1).

6. The tunnel lining concrete spray curing device according to claim 1, characterized in that, The thickness of the notch on the mounting frame (9) is greater than the thickness of the adjustment plate (11).

7. The tunnel lining concrete spray curing device according to claim 1, characterized in that, The surface of the adjustment plate (11) is provided with at least two layers of sub-surfaces along its axial direction, and each layer of sub-surfaces has a different shape.

Images