Tunnel secondary lining spraying maintenance trolley

Abstract

The invention provides a tunnel secondary lining spraying maintenance trolley, and relates to the technical field of tunnel construction maintenance equipment, the tunnel secondary lining spraying maintenance trolley comprises a base and two symmetrical sliding wheels fixedly connected to the outer wall of the bottom of the base, and the top of the single base is fixedly connected with a water storage tank. According to the spraying device, after the spraying action of a structure located at the bottom of the tunnel is completed by using a water arch strip with an arc-shaped surface, residual water is collected and led to a source through a pipeline structure, so that long-time water adding is not needed in the spraying process, water loss in the spraying process is reduced, and the spraying efficiency is improved. The structure is simple in structure, time loss in the construction process is avoided, the structure can be attached to the arch shape of the top of the tunnel, the effect of completely soaking the top of the tunnel is achieved, and the retaining amount of sprayed water is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction and maintenance equipment, and in particular to a tunnel secondary lining spraying and maintenance trolley. Background Art

[0002] In the field of tunnel engineering, spray curing of secondary lining is crucial to ensure the strength and durability of concrete structures. As an important equipment for modern tunnel construction, the performance of the spray curing trolley directly affects the curing effect and construction efficiency. However, some spray curing trolleys on the current market have obvious deficiencies in the control of spray direction. These devices often use relatively simple spray devices, and their spray directions are fixed or the adjustment range is limited, which makes it difficult to accurately adjust according to the specific shape and maintenance requirements of the tunnel secondary lining. This leads to uneven spray coverage in actual operation. Some areas may have problems such as water seepage and strength reduction due to excessive spraying, while other areas may crack due to insufficient spraying, which seriously affects the overall quality of the tunnel lining. In addition, the inaccurate control of the spray direction also increases the difficulty and labor intensity of construction personnel, reduces work efficiency, and increases construction costs. Therefore, the development of a tunnel secondary lining spray curing trolley that can accurately control the spray direction is of great significance to improving the quality and efficiency of tunnel construction.

[0003] For example, the Chinese invention patent CN111269022B discloses a "spraying system and construction method for a tunnel secondary lining spray concrete maintenance system". Its specification discloses: The existing measures generally involve manually pushing the device or directly using a water pipe for spraying, which is rather troublesome, and the spraying volume is not easy to control. At the same time, manual operation is rather laborious. When using some automated spraying devices, when moving in the tunnel, even if they are controlled to move in a straight line, the device will be offset due to the unevenness of the ground and gravel, which will in turn affect the uniformity of spraying on the walls on both sides. The above patents can prove the defects of the prior art.

[0004] Therefore, we made improvements to this and proposed a tunnel secondary lining spray maintenance trolley. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the spraying effect of the maintenance vehicle and the ability of the vehicle to drive in the center of the tunnel cannot be adjusted through better structures and equipment, resulting in incomplete spraying and driving deviation.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a tunnel secondary lining spraying maintenance trolley to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] The invention comprises a base and two symmetrical sliding wheels fixedly connected to the outer wall of the bottom thereof, a single base is fixedly connected to a water tank on the top, both top sides of the base are fixedly connected to a support frame, both sides of the support frame are fixedly connected to a plurality of connecting ladders for climbing, a pipe frame for allowing ventilation ducts in a tunnel to pass is fixedly connected to the support frame, a spray device is arranged on the pipe frame, a guide device is arranged on the support frame, a cross fixing frame is fixedly connected to the support frame, the spray device comprises a water arch bar fixedly connected to the pipe frame, the water arch bar is an arch structure, an outwardly folded arc groove is provided on the top of the water arch bar, the groove surface of the arc groove of the water arch bar faces the top relative to the base, a plurality of water holes arranged linearly are provided on the water arch bar, a sliding strip is slidably connected to the water arch bar, a water pump is fixedly connected to the outer wall of the water tank and is connected to the water tank through a pipe.

[0009] As a preferred technical solution of the present application, the sliding strip is an arc-shaped structure, and the length of the sliding strip is longer than the length of the water arch strip, so that the end of the sliding strip can be stretched.

[0010] As a preferred technical solution of the present application, the spray device also includes moving balls fixedly connected to both ends of the sliding strip, a plurality of telescopic end tubes are fixedly connected to the sliding strip, and the moving balls are arranged in the fan-shaped grooves.

[0011] As a preferred technical solution of the present application, the spray device also includes a buffer spring arranged on a single telescopic end tube, a motion shaft is rotatably connected to the telescopic end tube, and arc cylinders are slidably connected to both sides of the motion shaft.

[0012] As a preferred technical solution of the present application, the spray device also includes a water storage portion fixedly connected to the arc-shaped cylinder and communicated with the interior of the arc-shaped cylinder.

[0013] As a preferred technical solution of the present application, the spray device also includes a fixed bar fixedly connected to a single arc-shaped cylinder, and a plurality of movable bars are slidably connected to the arc-shaped cylinder. The plurality of movable bars are evenly distributed on both sides of the fixed bar. After being energized, the plurality of movable bars can be brought together to form an arc-shaped structure. The arc-shaped structure can be used to hit the water falling back from the spray onto the wall for a second time to achieve secondary spraying.

[0014] As a preferred technical solution of the present application, the spray device also includes a spray port fixedly connected to the moving shaft, and a pressure relief portion is provided on the arc-shaped cylinder.

[0015] As a preferred technical solution of the present application, the guide device includes a water pipe fixedly connected to a support frame, the bottom of the water pipe is connected to the output end of a water pump, the other end of the water pipe is fixedly connected to the interior of a water arch strip, the interior of the water arch strip is a hollow structure, a guide plate is rotatably connected to the support frame, a sinking groove is provided on the guide plate, and a reflux groove is provided on the guide plate.

[0016] As a preferred technical solution of the present application, the guide device also includes a fan-shaped groove opened on the guide plate, and a receiving groove is opened inside the fan-shaped groove to cooperate with the moving ball to prevent the end of the sliding strip from escaping from the fan-shaped groove.

[0017] As a preferred technical solution of the present application, the guide device also includes a return pipe rotatably connected to the bottom of the guide plate, an independent pipeline is arranged in the return pipe to be connected to the water pipe, the water pipe acts as a protective shell, the top of the return pipe is connected to the return groove, and the other end of the return pipe is fixedly connected and connected to the water tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the scheme of this application:

[0020] 1. In order to solve the problem that the spray device in the prior art is relatively simple to set up, the present application sets up a spray device, uses a water arch strip with an arc surface to collect the remaining water from the structure at the bottom of the tunnel after the spraying action is completed, and leads it to the source through a pipeline structure, so that there is no need to add water for a long time during the spraying process, resulting in reduced water loss during the spraying process, avoiding time loss during the construction process, and can achieve the effect of completely soaking the top of the tunnel through the fit of the structure with the arch at the top of the tunnel, ensuring the water retention after spraying;

[0021] 2. In order to solve the problem of deviation of the maintenance trolley during movement in the prior art, the present application uses a guide device and a guide plate assembly to enable the maintenance trolley to achieve simple direction change and adjustment effects, so that the maintenance trolley can adjust its position in time when the pipeline rack passes through the pipeline and the vehicle body is moving, so that the accuracy of spraying and the damage to the cavities and ventilation ducts on both sides are greatly reduced, thereby ensuring the spraying effect while avoiding unnecessary damage;

[0022] 3. Through the spray device, while the structure and accessories remain unchanged, the structure is shaken in the process of soaking the top of the tunnel, and the gaps on both sides of the spray port are filled, so that the positions on both sides of the spray port get the same amount of water as the spray port, making the spray effect more uniform, and solving the problem of uneven spraying in the prior art;

[0023] 4. By setting up the guide device, the guide vehicle body can rotate to adjust the flow of water and effectively weaken the spraying in the case of misalignment through its own rotation effect during the movement of the guide vehicle body, so as to achieve timely stop loss after the spraying error occurs, and solve the problem that the spraying cannot be adjusted in time in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A front view of a tunnel secondary lining spray curing trolley provided in this application;

[0025] Figure 2 A schematic diagram of the support frame structure of a tunnel secondary lining spray curing trolley provided in this application;

[0026] Figure 3 A schematic diagram of a water arch structure of a tunnel secondary lining spray curing trolley provided in this application;

[0027] Figure 4 A schematic diagram of the water pipe structure of a tunnel secondary lining spray curing trolley provided in this application;

[0028] Figure 5 This is one of the schematic diagrams of the arc-shaped cylinder structure of a tunnel secondary lining spray curing trolley provided in this application;

[0029] Figure 6 The second schematic diagram of the arc-shaped cylinder structure of a tunnel secondary lining spray curing trolley provided in this application;

[0030] Figure 7 A schematic diagram of the guide plate structure of a tunnel secondary lining spray curing trolley provided in this application;

[0031] Figure 8 A schematic diagram of a sliding strip structure of a tunnel secondary lining spray curing trolley provided in this application;

[0032] Fig. 9 A schematic diagram of the cross-sectional structure of a guide plate of a tunnel secondary lining spray maintenance trolley provided in this application.

[0033] Indicated in the figure:

[0034] 1. Base; 2. Sliding wheel; 3. Water tank; 4. Support frame; 5. Connecting ladder; 6. Pipe rack;

[0035] 7. Spraying device; 701. Water arch strip; 702. Water hole; 703. Sliding strip; 704. Moving ball; 705. Telescopic end tube; 706. Buffer spring; 707. Moving shaft; 708. Arc tube; 709. Water storage part; 710. Fixed strip; 711. Moving strip; 712. Spraying port; 713. Pressure relief part;

[0036] 8. Guide device; 801. Water delivery pipe; 802. Guide plate; 803. Sinking trough; 804. Return trough; 805. Fan-shaped trough; 806. Storage trough; 807. Return pipe;

[0037] 9. Cross fixing bracket; 10. Water pump. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] As described in the background art, it is impossible to adjust the spraying effect of the maintenance vehicle and the vehicle's ability to drive in the center of the tunnel through better structures and equipment, resulting in problems such as incomplete spraying and driving deviation.

[0040] In order to solve this technical problem, the present invention provides a tunnel secondary lining spray maintenance trolley, which is used for spraying in the tunnel and the spray structure can better achieve adaptive adjustment effect through self-intervention or external force during driving.

[0041] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A tunnel secondary lining spraying maintenance trolley specifically includes:

[0042] A base 1 and two symmetrical sliding wheels 2 fixedly connected to the outer wall of the bottom thereof, a water tank 3 fixedly connected to the top of a single base 1, support frames 4 fixedly connected to the tops of both sides of the base 1, a plurality of connecting ladders 5 for climbing fixedly connected to both sides of the support frame 4, a pipe frame 6 for allowing ventilation pipes in the tunnel to pass fixedly connected to the support frame 4, a connecting ladder 5 also connected to the pipe frame 6, a spray device 7 is provided on the pipe frame 6, a guide device 8 is provided on the support frame 4, and a cross fixing frame 9 is fixedly connected to the support frame 4;

[0043] The spray device 7 includes a water arch bar 701 fixedly connected to the pipe rack 6. The water arch bar 701 is an arch structure, and an outward-folded arc groove is provided on the top of the water arch bar 701. The groove surface of the arc groove of the water arch bar 701 faces the top relative to the base 1. A plurality of linearly arranged water holes 702 are provided on the water arch bar 701. A sliding strip 703 is slidably connected to the water arch bar 701. A water pump 10 is fixedly connected to the outer wall of the water tank 3 and is connected to the water tank 3 through a pipeline.

[0044] A tunnel secondary lining spray maintenance trolley provided by the present invention uses a concave trough structure, so that the water body after spraying can be received by the structure. When the receiving action is completed, the water body can be carried in the trough structure. At this time, when the tunnel contacts the water arch strip 701, the residence time of the water body at the arch bottom of the tunnel can be guaranteed, and the water can be taken away from the tunnel by overcoming gravity, so that the contact time between the tunnel and the water body is longer, and the spraying effect is better.

[0045] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] Example 1, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 A tunnel secondary lining spray maintenance trolley, wherein the sliding strip 703 is an arc-shaped structure, and the length of the sliding strip 703 is longer than the length of the water arch strip 701, so that the end of the sliding strip 703 can be stretched.

[0049] The arc-like structure is used to fit the arched surface of the tunnel top. When the water flow is captured by the water arch strip 701, it will exist in the structure, and the water flow can be recycled at this time, preventing the maintenance vehicle from having to add water multiple times, which will increase the time required for spraying and thus extend the construction time.

[0050] The spray device 7 also includes moving balls 704 fixedly connected to both ends of the sliding strip 703 , a plurality of telescopic end tubes 705 are fixedly connected to the sliding strip 703 , and the moving balls 704 are arranged in the fan-shaped grooves 805 .

[0051] The moving ball 704 is adopted to move in the fan-shaped groove 805 on the water arch strip 701. While being able to achieve the effect of balanced length adjustment on both sides through the action of the guide plates 802 on both sides, it can ensure that the relative position of the sliding strip 703 and the water hole 702 on the water arch strip 701 can be changed through the displacement action during the relative movement of the sliding strip 703 on the water arch strip 701 to change whether to spray.

[0052] Please refer to Figure 5 A tunnel secondary lining spraying maintenance trolley, the spraying device 7 also includes a buffer spring 706 arranged on a single telescopic end tube 705, the telescopic end tube 705 is rotatably connected to a moving shaft 707, and both sides of the moving shaft 707 are slidably connected to an arc cylinder 708.

[0053] The use of the moving shaft 707 enables the two actions of rotation and flipping to be realized at the position of the telescopic end tube 705, so that after flipping, the concave part of the water storage part 709 can reach the convex part of the water arch strip 701 to play a buffering role on the top.

[0054] The spray device 7 further includes a water storage portion 709 which is fixedly connected to the arc-shaped cylinder 708 and communicated with the interior thereof.

[0055] The water storage portion 709 is composed of an elastic sac-like body, which can deform to a certain extent when filled with liquid.

[0056] The spray device 7 also includes a fixed bar 710 fixedly connected to a single arc-shaped cylinder 708, and a plurality of movable bars 711 are slidably connected to the arc-shaped cylinder 708. The plurality of movable bars 711 are evenly distributed on both sides of the fixed bar 710. After being energized, the plurality of movable bars 711 can move toward the fixed bar 710 to form an arc-shaped structure, and the arc-shaped structure can be used to hit the falling water of the spray onto the wall for a second time to achieve secondary spraying.

[0057] It should be added that the fixed bar 710 and the moving bar 711 are structures of the same size. The difference lies in the different connection relationship. There are different magnetic forces between the moving bars 711. The magnetic force is generated by an electromagnet. Since the electromagnet is an existing structure, it is not disclosed. Through the magnetic force between the moving bar 711 and the fixed bar 710, it is possible to control whether the moving bar 711 moves closer to the fixed bar 710.

[0058] The spray device 7 further includes a spray port 712 fixedly connected to the moving shaft 707 , and a pressure relief portion 713 is provided on the arc-shaped cylinder 708 .

[0059] Example 2 further optimizes a tunnel secondary lining spray curing trolley provided in Example 1. Specifically, Figure 4 , Figure 7 and Figure 8 As shown, the guide device 8 includes a water pipe 801 fixedly connected to the support frame 4, the bottom of the water pipe 801 is connected to the output end of the water pump 10, and the other end of the water pipe 801 is fixedly connected to the water arch strip 701, the interior of the water arch strip 701 is a hollow structure, and a guide plate 802 is rotatably connected to the support frame 4, and a sinking groove 803 is provided on the guide plate 802, and a reflux groove 804 is provided on the guide plate 802.

[0060] When the guide plate 802 comes into contact with the inner wall of the tunnel and rotates after the device as a whole moves in the tunnel, it can change the flow rate of the return flow and pull the sliding strip 703 to move under its own rotation effect, thereby causing the spray port 712 above it to move.

[0061] The guide device 8 also includes a fan-shaped groove 805 formed on the guide plate 802 . A receiving groove 806 is formed inside the fan-shaped groove 805 and cooperates with the moving ball 704 to prevent the end of the sliding strip 703 from escaping from the fan-shaped groove 805 .

[0062] The space formed by the fan-shaped groove 805 and the storage groove 806 allows the moving balls 704 on both sides of the sliding strip 703 to exist in this space and move to a certain extent.

[0063] Further, such as Figure 1 As shown, the guide device 8 also includes a return pipe 807 rotatably connected to the bottom of the guide plate 802, and an independent pipeline is arranged in the return pipe 807 to be connected to the water pipe 801. The water pipe 801 acts as a protective shell. The top of the return pipe 807 is connected to the return groove 804, and the other end of the return pipe 807 is fixedly connected and connected to the water tank 3.

[0064] The reflux trough 804 is used to collect the water in the water arch strip 701 to prevent water waste.

[0065] The use process of a tunnel secondary lining spray curing trolley provided by the present invention is as follows:

[0066] 1. When in use, the device is moved to the inside of the tunnel through the sliding wheel 2 on the base 1. The driving component of the device is not disclosed. When the device enters the tunnel, the water pump 10 of the existing structure is activated to move the water into the water pipe 801. After the water enters the water pipe 801, it continues to move to the water storage part 709 through the telescopic end pipe 705, so that the water storage part 709 begins to fill. When the water storage part 709 is full, the water flow delivery speed of the spray port 712 is less than the input speed, causing the water storage part 709 to deform, that is, a part of it protrudes relative to the arc tube 708. At this time, the water arch bar 701 is located below the tunnel arch and fits with the arch structure on the top of the tunnel. After the spray port 712 sprays water, the water storage part 709 on the arc tube 708 contacts the top of the tunnel and rotates, and the moving bar 711 above it The fixed bar 710 and the moving bar 711 repel each other under the action of magnetic force and are evenly arranged in a circular shape. The spray port 712 is blocked during spraying to form a larger water mist for spraying, which expands the water delivery area and reduces the falling time of a part of the water, so that a part of the water body can enter the curved surface of the water arch bar 701 faster to accumulate. When the water body is full of the water arch bar 701, the electromagnet produces an attraction effect, so that the moving bars 711 no longer repel each other. At this time, since there is a fixed bar 710 on the arc tube 708, an arc surface structure is generated during the rotation process and the water body is shaken during the rotation process, so that the arched surface above it can be contacted and soaked for a second time through the slapping of the water surface. At the same time, the water drops falling from the top are hit back by the arc structure generated by the fixed bar 710 and the moving bar 711 to soak again.

[0067] 2. Under another working condition, the two arc-shaped cylinders 708 on the moving shaft 707 are made parallel to the water arch strip 701 by rotating the moving shaft 707, that is, the water storage portion 709 is in contact with both ends of the water arch strip 701, and at the same time, the guide plates 802 on both sides of the device are in contact with the tunnel and rotate. It should be added that the length of the sliding strip 703 is greater than the length of the water arch strip 701 and the end of the sliding strip 703 is an elastically bendable structure. At this time, the fan-shaped groove 805 on the guide plate 802 pulls the sliding strip 703 It reciprocates on the water arch bar 701, and at the same time, the arc cylinder 708 rotates and cooperates with the fixed bar 710 and the moving bar 711 to remove debris from the top of the tunnel. When foreign matter cannot be removed, it will come into contact with the fixed bar 710 and collide with it to make a sound. At the same time, in this state, the maintenance trolley acts as a supporting structure to temporarily support the tunnel arch structure. At the same time, the large space at the bottom allows internal personnel to quickly evacuate the scene, and the pipe rack 6 above it can ensure the integrity of this part of the ventilation duct and ensure the internal air circulation;

[0068] 3. During driving inside the tunnel, the guide plates 802 on both sides rotate after contacting the tunnel wall. If the arc-shaped cylinders 708 on both sides are squeezed, the arc-shaped cylinders 708 will squeeze the sliding strip 703 to the other side. When the sliding strip 703 has been displaced, the moving ball 704 at the end of the sliding strip 703 is more inclined to stay at the arc end of the fan-shaped groove 805 consistent with the squeezing direction. During the rotation of the guide plate 802, the fan-shaped groove 805 of the guide plate 802 pulls the sliding strip 703 through the receiving groove 806 therein, so that it is consistent with the direction of the pressure received, thereby adjusting the direction of the spraying. If the offset distance is too large, the water hole 702 on the water arch strip 701 and the water hole 702 on the sliding strip 703 will be misaligned, making it impossible for water to be transmitted through the water hole 702, thereby interrupting the continuation of the spraying process, so that the water will not be sprayed at the wrong position.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A tunnel secondary lining spraying maintenance trolley, characterized in that: The invention comprises two bases (1) and two symmetrical sliding wheels (2) fixedly connected to the outer wall of the bottom thereof, the top of each base (1) being fixedly connected to a water tank (3), the tops of both sides of the base (1) being fixedly connected to a support frame (4), both sides of the support frame (4) being fixedly connected to a plurality of connecting ladders (5) for climbing, the support frame (4) being fixedly connected to a pipe frame (6) for allowing ventilation pipes in the tunnel to pass, the pipe frame (6) being provided with a spray device (7), the support frame (4) being provided with a guide device (8), and the support frame (4) being fixedly connected to a cross fixing frame (9); The spray device (7) comprises a water arch strip (701) fixedly connected to the pipe frame (6); the water arch strip (701) is an arch structure, and an arc groove folded outward is provided on the top of the water arch strip (701); the groove surface of the arc groove of the water arch strip (701) faces the top of the base (1); a plurality of water holes (702) arranged linearly are provided on the water arch strip (701); a sliding strip (703) is slidably connected to the water arch strip (701); and a water pump (10) is fixedly connected to the outer wall of the water storage tank (3) and is connected to the water storage tank (3) through a pipeline.

2. A tunnel secondary lining spraying maintenance trolley according to claim 1, characterized in that: The sliding strip (703) is an arc-shaped structure, and the length of the sliding strip (703) is longer than the length of the water arch strip (701).

3. A tunnel secondary lining spraying maintenance trolley according to claim 2, characterized in that: The spray device (7) further comprises moving balls (704) fixedly connected to both ends of the sliding strip (703), and a plurality of telescopic end tubes (705) are fixedly connected to the sliding strip (703).

4. A tunnel secondary lining spraying maintenance trolley according to claim 3, characterized in that: The spray device (7) further comprises a buffer spring (706) arranged on a single telescopic end tube (705), a moving shaft (707) being rotatably connected to the telescopic end tube (705), and arc-shaped cylinders (708) are slidably connected to both sides of the moving shaft (707).

5. A tunnel secondary lining spraying maintenance trolley according to claim 4, characterized in that: The spray device (7) further comprises a water storage portion (709) fixedly connected to the arc-shaped cylinder (708) and communicated with the interior of the arc-shaped cylinder (708).

6. A tunnel secondary lining spraying maintenance trolley according to claim 5, characterized in that: The spray device (7) further comprises a fixed bar (710) fixedly connected to the single arc-shaped cylinder (708), and a plurality of moving bars (711) are slidably connected to the arc-shaped cylinder (708), and the plurality of moving bars (711) are evenly distributed on both sides of the fixed bar (710).

7. A tunnel secondary lining spraying maintenance trolley according to claim 6, characterized in that: The spray device (7) further comprises a spray port (712) fixedly connected to the moving shaft (707), and a pressure relief portion (713) is provided on the arc-shaped cylinder (708).

8. A tunnel secondary lining spraying maintenance trolley according to claim 7, characterized in that: The guide device (8) comprises a water pipe (801) fixedly connected to the support frame (4); the bottom of the water pipe (801) is connected to the output end of the water pump (10); the other end of the water pipe (801) is fixedly connected to the inside of the water arch strip (701); the inside of the water arch strip (701) is a hollow structure; a guide plate (802) is rotatably connected to the support frame (4); a sinking groove (803) is provided on the guide plate (802); and a reflux groove (804) is provided on the guide plate (802).

9. A tunnel secondary lining spraying maintenance trolley according to claim 8, characterized in that: The guide device (8) further comprises a fan-shaped groove (805) formed on the guide plate (802), wherein a receiving groove (806) is formed inside the fan-shaped groove (805) and cooperates with the moving ball (704) to prevent the end of the sliding strip (703) from escaping from the fan-shaped groove (805).

10. A tunnel secondary lining spraying maintenance trolley according to claim 9, characterized in that: The guide device (8) further comprises a return pipe (807) rotatably connected to the bottom of the guide plate (802), the top of the return pipe (807) being connected to the return groove (804), and the other end of the return pipe (807) being fixedly connected to and connected to the water storage tank (3).

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