Wet spraying rack for tunnel

Abstract

The utility model discloses a tunnel wet spraying rack which comprises a guide rail, the guide rail is of a three-section structure, a sliding block is arranged on each section of the guide rail in a sliding mode, a sliding groove corresponding to the guide rail is formed in each sliding block, a driving piece for driving the sliding block to move along the guide rail is arranged on each sliding block, and an overturning body is arranged on each sliding block. And a spray head connected with an external concrete pump pipe is arranged on the overturning body. According to the wet spraying rack for the tunnel, the three-section type guide rail structure capable of being installed on the telescopic vertical arch trolley is adopted, each section of guide rail is provided with the spraying head with the overturning body, the three spraying heads can conduct wet spraying operation at the same time, the working efficiency can be effectively improved, construction does not need to be conducted through a special engineering vehicle, operation is convenient, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a wet shotcreting gantry for tunnels. Background Technique

[0002] Wet shotcreting on the inner wall of a tunnel is a commonly used method for tunnel construction and maintenance. By spraying an expansive agent and a powdery material onto the inner wall of the tunnel using wet concrete, the stability and durability of the tunnel can be improved. Compared with the traditional dry shotcreting method, this method can significantly reduce dust generation, improve the working environment, and at the same time improve construction efficiency and quality.

[0003] Currently, the main method of wet shotcreting on the inner wall of tunnel construction is to install a mechanical telescopic boom on an engineering vehicle and set a swivel nozzle for wet shotcreting at the front end of the telescopic boom. The position of the nozzle is adjusted and controlled by controlling the robotic arm and the swivel body. However, in this wet shotcreting method, only one nozzle works, resulting in low work efficiency, and it is necessary to use a dedicated engineering vehicle for construction, which is inconvenient to operate. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a wet shotcreting gantry for tunnels. It adopts a three-section guide rail structure that can be installed on a retractable arch support trolley, and nozzles with swivel bodies are provided on each section of the guide rail. The three nozzles can perform wet shotcreting operations simultaneously, which can effectively improve work efficiency, and there is no need to use a dedicated engineering vehicle for construction, which is convenient to operate and saves costs. It can effectively solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A wet shotcreting gantry for tunnels, including a guide rail. The guide rail is of a three-section structure, and a slider is slidably arranged on each section of the guide rail. A chute corresponding to the guide rail is opened on the slider. A driving member for driving the slider to move along the guide rail is provided on the slider, and a swivel body is provided on the slider. A nozzle connected to an external concrete pump pipe is provided on the swivel body.

[0006] As a preferred technical solution of the utility model, end plates are welded at both ends of each section of the guide rail.

[0007] As a preferred technical solution of the utility model, the driving member includes a driving motor, and a driving wheel in contact with the guide rail is provided on the output shaft of the driving motor.

[0008] As a preferred technical solution of the utility model, guide wheels in contact with the guide rail are provided on the inner wall of the chute.

[0009] As a preferred technical solution of the present utility model, the flipping body includes a hydraulic motor I installed on the slider, a hydraulic motor II is provided on the output shaft of the hydraulic motor I, an eccentric motor is provided on the output shaft of the hydraulic motor II, and the nozzle is installed on the eccentric motor.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] The wet shotcreting gantry for tunnels in the example of the present utility model adopts a three-section guide rail structure that can be installed on a retractable arch erecting trolley, and nozzles with flipping bodies are provided on each guide rail. The three nozzles can perform wet shotcreting operations simultaneously, which can effectively improve work efficiency, and there is no need to rely on special engineering vehicles for construction. The operation is convenient and the cost is saved. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the present utility model;

[0013] Figure 2 It is a schematic structural diagram of the guide rail in the present utility model;

[0014] Figure 3 It is a schematic diagram when used in the combined state of the guide rails;

[0015] Figure 4 It is a schematic diagram when used in the separated state of the guide rails.

[0016] In the figure: 1 guide rail, 2 end plate, 3 slider, 4 guide wheel, 5 driving motor, 6 hydraulic motor I, 7 hydraulic motor II, 8 eccentric motor, 9 nozzle. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4 , the present utility model provides a technical solution: a wet shotcreting gantry for tunnels, including a guide rail 1. The guide rail 1 is of a three-section structure. A slider 3 is slidably provided on each guide rail 1. A chute corresponding to the guide rail 1 is opened on the slider 3. A driving member for driving it to move along the guide rail 1 is provided on the slider 3, and a flipping body is provided on the slider 3. A nozzle 9 connected to an external concrete pump pipe is provided on the flipping body. The driving member can drive the slider 3 to move along the guide rail 1, and the slider 3 drives the nozzle 9 to move through the flipping body, so that the nozzle 9 moves along the guide rail 1; the flipping body can adjust the angle of the nozzle 9.

[0019] Further, end plates 2 are welded to both ends of each section of the guide rail 1 to limit the slider 3.

[0020] Further, the driving member includes a driving motor 5. A driving wheel in contact with the guide rail 1 is provided on the output shaft of the driving motor 5. The driving motor 5 drives the driving wheel to rotate, so that the slider 3 moves on the guide rail 1. The slider 3 drives the spray head 9 to move along the guide rail 1 through the flipping body.

[0021] Further, guide wheels 4 in contact with the guide rail 1 are provided on the inner wall of the chute, which can reduce the friction between the slider 3 and the guide rail 1.

[0022] Further, the flipping body includes a first hydraulic motor 6 installed on the slider 3. A second hydraulic motor 7 is provided on the output shaft of the first hydraulic motor 6. An eccentric motor 8 is provided on the output shaft of the second hydraulic motor 7. The spray head 9 is installed on the eccentric motor 8. The first hydraulic motor 6 can drive the spray head 9 to rotate along the axis of the first hydraulic motor 6; the second hydraulic motor 7 can drive the spray head 9 to rotate along the axis of the second hydraulic motor 7; the eccentric motor 8 can drive the spray head 9 to vibrate within a certain range, thereby increasing the spraying range of the spray head 9.

[0023] The first hydraulic motor 6, the second hydraulic motor 7 and the eccentric motor 8 used in the present utility model all adopt the commonly used hydraulic motor technology in the prior art. Their working modes and structures are all well-known technologies and will not be elaborated here; the driving motor 5 adopts the commonly used electrical equipment in the prior art. Its working mode and structure are all well-known technologies and will not be elaborated here.

[0024] During use:

[0025] Install the guide rail 1 on the telescopic frame of the arch erection area of the arch erection trolley at the upper side of the middle part, and install the guide rail 1 at the lower side of both ends on the fixed frame of the arch erection area of the arch erection trolley;

[0026] When the telescopic frame of the arch erection area is in the non-extended state, the three-section guide rail 1 is combined together, as Figure 3 shown;

[0027] When the telescopic frame of the arch erection area is in the extended state, the three-section guide rail 1 is separated, as Figure 4 shown;

[0028] The concrete mixer truck pours the concrete into the hopper of the trailer pump. The trailer pump pumps the concrete into the concrete pump pipe. The concrete reaches the spray head 9 along the pump pipe. The spray head 9 sprays the concrete evenly on the primary support surface along the guide rail 1;

[0029] The moving mode of the spray head 9 is as follows:

[0030] The first hydraulic motor 6 can drive the spray head 9 to rotate along the axis of the first hydraulic motor 6;

[0031] The hydraulic motor II 7 can drive the nozzle 9 to rotate along the axial direction of the hydraulic motor II 7;

[0032] The eccentric motor 8 can drive the nozzle 9 to vibrate within a certain range, thereby increasing the spraying range of the nozzle 9;

[0033] The moving mode of the nozzle 9 along the guide rail 1 is as follows:

[0034] The driving motor 5 drives the driving wheel to rotate, thereby causing the slider 3 to move on the guide rail 1, and the slider 3 drives the nozzle 9 to move along the guide rail 1 through the turning body.

[0035] The utility model adopts a three-section guide rail structure that can be installed on a telescopic vertical arch trolley, and a nozzle 9 with a turning body is provided on each section of the guide rail 1. The three nozzles 9 can perform wet spraying operations simultaneously, which can effectively improve work efficiency, and there is no need to rely on special engineering vehicles for construction. The operation is convenient and the cost is saved.

[0036] The parts not disclosed in the utility model are all prior arts, and their specific structures, materials and working principles will not be elaborated. Although the embodiments of the utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A wet spraying stand for a tunnel, comprising a guide rail (1), characterized in that: The guide rail (1) is a three-section structure, each section of the guide rail (1) is slidably provided with a slider (3), the slider (3) is provided with a slide groove corresponding to the guide rail (1), the slider (3) is provided with a driving member for driving it to move along the guide rail (1), and the slider (3) is provided with a flip body, and the flip body is provided with a nozzle (9) connected to an external concrete pump pipe.

2. The wet spraying stand for tunnel according to claim 1, characterized in that: End plates (2) are welded to both ends of each guide rail (1).

3. The wet spraying stand for tunnel according to claim 1, characterized in that: The driving member comprises a driving motor (5), and a driving wheel in contact with the guide rail (1) is provided on an output shaft of the driving motor (5).

4. The wet spraying stand for tunnel according to claim 1, characterized in that: A guide wheel (4) in contact with the guide rail (1) is provided on the inner wall of the slide groove.

5. The wet spraying stand for tunnel according to claim 1, characterized in that: The tilting body comprises a hydraulic motor 1 (6) mounted on a slide block (3); a hydraulic motor 2 (7) is arranged on an output shaft of the hydraulic motor 1 (6); an eccentric motor (8) is arranged on an output shaft of the hydraulic motor 2 (7); and the spray head (9) is mounted on the eccentric motor (8).

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