A type of integrated netting and shotcrete device

Abstract

This utility model relates to the field of tunnel excavation technology, specifically disclosing an integrated mesh-attached shotcrete device. It includes a drive shaft with a rotating structure mounted on it. A branch arm mounting seat is connected to the rotating structure via a lifting assembly. The rotating structure causes the branch arm mounting seat to rotate circumferentially along the drive shaft. The lifting assembly adjusts the distance between the branch arm mounting seat and the drive shaft. A first claw root rotating cylinder and a second claw root rotating cylinder are respectively mounted at both ends of the branch arm mounting seat. The first claw root rotating cylinder is connected to a first branch arm, with a first claw hook at its end. The second claw root rotating cylinder is connected to a second branch arm, with a second claw hook at its end. Clamping plates are installed on the inner walls of both the first and second branch arms. When the first and second branch arms are closed, the two clamping plates also close to clamp the spray gun. This utility model can lift the spray gun closer to the surface of the reinforcing mesh, reducing the skill requirements for operators.

Description

Technical Field

[0001] This utility model relates to the field of tunnel excavation technology, specifically to an integrated netting and shotcrete device. Background Technology

[0002] Shotcrete with wire mesh is a tunnel excavation construction technique used to support tunnels after excavation. It has advantages such as fast forming, significant effect, and strong aesthetic appeal, and is adopted by many construction projects.

[0003] Shotcrete with steel mesh, also known as shotcrete with steel mesh, involves attaching a steel mesh to the tunnel wall and spraying concrete onto the mesh's surface to form a stable structure, thus providing tunnel support.

[0004] Most shotcrete equipment currently available is concrete spraying machine. During operation, the mesh hanging and shotcrete spraying are carried out separately. The mesh hanging equipment is not flexible enough, as it can only lift the steel mesh. The spray gun of the concrete spraying machine is manually operated. Manual operation can ensure that the concrete can cover the entire sprayed surface of the steel mesh, but the spray gun will be far away from the sprayed surface, which requires a high level of skill from the operator. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated netting and shotcrete device to solve the problems in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A shotcrete-mesh integrated device includes a drive shaft with a rotating structure mounted on it. A branch arm mounting seat is connected to the rotating structure via a lifting assembly. The rotating structure causes the branch arm mounting seat to rotate circumferentially along the drive shaft. The lifting assembly adjusts the distance between the branch arm mounting seat and the drive shaft. A first claw root rotating cylinder and a second claw root rotating cylinder are respectively installed at both ends of the branch arm mounting seat. A first claw root rotating cylinder is connected to a first branch arm, and a first claw hook is provided at the end of the first branch arm. The second claw root rotating cylinder is connected to a second branch arm, and a second claw hook is provided at the end of the second branch arm. The first claw hook and the second claw hook are used to fix the steel mesh. Clamping plates are respectively installed on the inner walls of the first branch arm and the second branch arm for clamping the spray gun.

[0008] Furthermore, the drive shaft is a hydraulic shaft, the rotating structure is a rotating ring, a hydraulic motor is installed inside the rotating ring, and a hose is pulled out from the hydraulic shaft to connect to the hydraulic motor to supply power to the hydraulic motor; a gear is installed at the output end of the hydraulic motor, and an annular rack is provided on the outer wall of the hydraulic shaft. The gear meshes with the annular rack, and the rotation of the hydraulic motor causes the rotating ring to rotate circumferentially along the hydraulic shaft.

[0009] Furthermore, the lifting assembly includes a first rotary cylinder mounted on the rotating structure. The output end of the first rotary cylinder is connected to the large arm of the net-catching spray guard. The interior of the large arm is connected to a second rotary cylinder via a linear cylinder. The output end of the second rotary cylinder is connected to a small arm of the net-catching spray guard. The small arm is connected to a third rotary cylinder. The output end of the third rotary cylinder is connected to the branch arm mounting base. The rotation axes of the output ends of the first, second, and third rotary cylinders are in the same direction.

[0010] Furthermore, it also includes a normal rotation cylinder, one end of which is connected to the output end of the third rotation cylinder, and the other end of which is connected to the bottom of the branch arm mounting base. The output end of the third rotation cylinder is connected to the branch arm mounting base through the normal rotation cylinder.

[0011] Furthermore, there are two second claw hooks, which are symmetrically arranged along the second branch arm; when the first branch arm and the second branch arm are closed, the first claw hook and the second claw hook are staggered.

[0012] Preferably, the clamping plate is an arc-shaped clamping plate.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] This invention can perform both mesh hanging and spray mixing operations in one integrated process. During mesh hanging, the first and second branch arms open, and the first and second claw hooks respectively hook onto the mesh of the reinforcing steel mesh, thus securing the mesh. The mesh is then lifted by the lifting assembly to complete the hanging process. After hanging, when the first and second branch arms close, the spray gun is clamped. The rotating structure allows the spray gun to rotate circumferentially, ensuring that the spraying range covers the surface of the reinforcing steel mesh. The lifting assembly brings the spray gun close to the surface of the reinforcing steel mesh on the rock wall, minimizing spray mixing errors and reducing the need for highly skilled operators. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present utility model.

[0016] Figure 2 for Figure 1 Enlarged view of point A.

[0017] Figure 3 This is a diagram showing the retracted state of this utility model.

[0018] Figure 4 This is a diagram showing the unfolded state of this utility model.

[0019] Figure 5 This is a structural diagram of the present invention connected to a trolley for use.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1-Drive shaft, 2-Rotating structure, 3-First rotating cylinder, 4-Grab net spraying arm, 5-Linear cylinder, 6-Second rotating cylinder, 7-Grab net spraying arm, 8-Third rotating cylinder, 9-Normal rotating cylinder, 10-Branch arm mounting base, 11-First claw root rotating cylinder, 12-Second claw root rotating cylinder, 13-First branch arm, 14-Second branch arm, 15-First claw hook, 16-Second claw hook, 17-Arc-shaped clamping plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0023] like Figure 1 , Figure 2 As shown, an integrated netting and shotcrete device includes a drive shaft 1, a rotating structure 2 mounted on the drive shaft 1, and a branch arm mounting seat 10 connected to the rotating structure 2 via a lifting assembly. The rotating structure 2 causes the branch arm mounting seat 10 to rotate circumferentially along the drive shaft 1, and the lifting assembly adjusts the distance between the branch arm mounting seat 10 and the drive shaft 1. A first claw root rotating cylinder 11 and a second claw root rotating cylinder 12 are respectively mounted at both ends of the branch arm mounting seat 10. The first claw root rotating cylinder 11 is connected to a first branch arm 13, and a first claw hook 15 is provided at the end of the first branch arm 13. The second claw root rotating cylinder 12 is connected to a second branch arm 14, and a second claw hook 16 is provided at the end of the second branch arm 14. The first claw hook 15 and the second claw hook 16 are also present. Clamping plates are respectively installed on the inner walls of the first branch arm 13 and the second branch arm 14 for clamping the spray gun.

[0024] This invention can perform both mesh installation and concrete spraying by lifting the spray gun. During mesh installation, the first branch arm 13 and the second branch arm 14 are slightly retracted and inserted into the mesh of the reinforcing steel mesh. Then, the first claw root rotating cylinder 11 and the second claw root rotating cylinder 12 are driven to open the first branch arm 13 and the second branch arm 14 to both sides. During this opening process, the first claw hook 15 and the second claw hook 16 of the first branch arm 13 and the second branch arm 14 respectively hook onto the mesh of the reinforcing steel mesh. The first claw hook 15 and the second claw hook 16 simultaneously hold the reinforcing steel mesh, thus fixing it in place. The reinforcing steel mesh is then lifted onto the rock face using the lifting assembly to complete the installation. It should be noted that in current mesh installation processes, hooks need to be pre-installed on the rock face before installing the mesh. The above structure allows the mesh to be hooked onto the hooks on the rock face to complete the installation. The disadvantage of manual concrete spraying is that the spray gun is farther from the sprayed surface, requiring greater arm strength and a higher level of operator skill. This utility model drives the first branch arm 13 and the second branch arm 14 to close, which can clamp the spray gun between the clamping plates of the first branch arm 13 and the second branch arm 14. By using the rotating structure 2 to change the angle in the circumferential direction of the drive shaft 1, the spray gun can be aimed at any angle of the rock wall. The lifting component can lift the spray gun and bring it closer to the spraying surface of the steel mesh on the rock wall, so that the error caused by spraying is reduced and no high level of operator skill is required.

[0025] Furthermore, the drive shaft 1 is a hydraulic shaft, and the rotating structure 2 is a rotating ring. A hydraulic motor is installed inside the rotating ring, and a hose is pulled out from the hydraulic shaft to power the hydraulic motor. A gear is installed at the output end of the hydraulic motor, and an annular rack is provided on the outer wall of the hydraulic shaft. The gear meshes with the annular rack, and the rotation of the hydraulic motor causes the rotating ring to rotate circumferentially along the hydraulic shaft. The rotation of the hydraulic motor causes the first rotating structure 2 to rotate along the hydraulic shaft. The power supply is provided by the hose pulled out from the hydraulic shaft to power the hydraulic motor. The disadvantage is that the rotating ring cannot rotate too much in one direction. Considering the function to be achieved in this application, one revolution of the drive shaft is sufficient to meet the requirements of this application, and further rotation can be achieved by rotating the rotating ring back.

[0026] like Figure 3 , Figure 4As shown, the lifting assembly further includes a first rotary cylinder 3 mounted on the rotating structure 2. The output end of the first rotary cylinder 3 is connected to the large arm 4 for netting spraying. The interior of the large arm 4 is connected to a second rotary cylinder 6 via a linear cylinder 5. The output end of the second rotary cylinder 6 is connected to a small arm 7 for netting spraying. The small arm 7 is connected to a third rotary cylinder 8. The output end of the third rotary cylinder 8 is connected to the branch arm mounting base 10. The rotation axes of the output ends of the first rotary cylinder 3, the second rotary cylinder 6, and the third rotary cylinder 8 are in the same direction. The purpose of the lifting assembly is to raise the height of the branch arm mounting base 10, thereby completing the lifting of the reinforcing mesh and the height adjustment of the spray gun. The rotation of the first rotary cylinder 3 affects the orientation of the large arm 4 for netting spraying. The large arm 4 is equipped with a linear cylinder 5. The first rotary cylinder 3 rotates the large arm 4 to face the rock wall, and the linear cylinder 5 pushes the small arm 7 outward to complete the lifting action. The second rotary cylinder 6 is used to adjust the orientation of the net-grabbing spray guard arm 7, and the third rotary cylinder 8 is used to adjust the orientation of the branch arm mounting base 10. The first rotary cylinder 3, the second rotary cylinder 6, the third rotary cylinder 8 and the linear cylinder 5 work together to complete the lifting action and the folding and retraction of the entire structure of this utility model.

[0027] Furthermore, it also includes a normal rotation cylinder 9. One end of the normal rotation cylinder 9 is connected to the output end of the third rotation cylinder 8, and the other end of the normal rotation cylinder 9 is connected to the bottom of the branch arm mounting base 10. The output end of the third rotation cylinder 8 is connected to the branch arm mounting base 10 through the normal rotation cylinder 9. The adjustment of the normal rotation cylinder 9 changes the relative position of the first branch arm 13 and the second branch arm 14, mainly to adjust the angle of the lifted steel mesh, which facilitates alignment during installation.

[0028] Furthermore, there are two second claw hooks 16, which are symmetrically arranged along the second branch arm 14. When the first branch arm 13 and the second branch arm 14 are closed, the first claw hook 15 and the second claw hook 16 are staggered. The first claw hook 15 and the second claw hook 16 can fit more closely together when the first branch arm 13 and the second branch arm 14 are closed, without interfering with each other or occupying too much space. When the first branch arm 13 and the second branch arm 14 separate to both sides and tighten the reinforcing mesh, three stress points are formed, making the fixed reinforcing mesh more stable.

[0029] Preferably, the clamping plate is an arc-shaped clamping plate 17. The arc-shaped clamping plate 17 has a larger force-bearing surface when clamping the spray gun, which makes it more stable.

[0030] It should be noted that: Figure 5As shown, this utility model is usually installed on a tunneling trolley for use. The tunneling trolley supports and powers the drive shaft 1. During the rotation adjustment of the angle, if there is interference between the spray gun and the frame of the tunneling trolley, the spray gun can be retracted first, rotated to a position without interference, and then pushed outward.

[0031] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0032] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A netting and shotcrete integrated device, characterized in that: Includes a drive shaft (1), on which a rotating structure (2) is mounted, and a branch arm mounting seat (10) is connected to the rotating structure (2) via a lifting assembly. The rotating structure (2) causes the branch arm mounting seat (10) to rotate circumferentially along the drive shaft (1), and the lifting assembly adjusts the distance between the branch arm mounting seat (10) and the drive shaft (1). The first claw root rotating cylinder (11) and the second claw root rotating cylinder (12) are respectively installed at both ends of the branch arm mounting base (10); the first claw root rotating cylinder (11) is connected to the first branch arm (13), and the first claw hook (15) is provided at the end of the first branch arm (13); the second claw root rotating cylinder (12) is connected to the second branch arm (14), and the second claw hook (16) is provided at the end of the second branch arm (14); the first claw hook (15) and the second claw hook (16) are used to fix the steel mesh; Clamping plates are installed on the inner walls of the first branch arm (13) and the second branch arm (14) respectively, for clamping the spray gun.

2. The integrated netting and shotcrete device according to claim 1, characterized in that: The drive shaft (1) is a hydraulic shaft, the rotating structure (2) is a rotating ring, a hydraulic motor is installed inside the rotating ring, and a hose is pulled out from the hydraulic shaft to connect to the hydraulic motor to supply power to the hydraulic motor. The output end of the hydraulic motor is equipped with a gear, and the outer wall of the hydraulic shaft is provided with an annular rack. The gear meshes with the annular rack, and the rotation of the hydraulic motor causes the rotating ring to rotate circumferentially along the hydraulic shaft.

3. The integrated netting and shotcrete device according to claim 1, characterized in that: The lifting assembly includes a first rotary cylinder (3) mounted on the rotating structure (2). The output end of the first rotary cylinder (3) is connected to the large arm (4) of the net-catching spray guard. The inside of the large arm (4) of the net-catching spray guard is connected to a second rotary cylinder (6) via a linear cylinder (5). The output end of the second rotary cylinder (6) is connected to the small arm (7) of the net-catching spray guard. The small arm (7) of the net-catching spray guard is connected to a third rotary cylinder (8). The output end of the third rotary cylinder (8) is connected to the branch arm mounting base (10). The rotation axes of the output ends of the first rotary cylinder (3), the second rotary cylinder (6) and the third rotary cylinder (8) are in the same direction.

4. The integrated netting and shotcrete device according to claim 3, characterized in that: It also includes a normal rotation cylinder (9), one end of which is connected to the output end of the third rotation cylinder (8), and the other end of which is connected to the bottom of the branch arm mounting base (10). The output end of the third rotation cylinder (8) is connected to the branch arm mounting base (10) through the normal rotation cylinder (9).

5. The integrated netting and shotcrete device according to claim 1, characterized in that: There are two second claw hooks (16), and the two second claw hooks (16) are arranged symmetrically on the left and right sides along the second branch arm (14); When the first branch arm (13) and the second branch arm (14) close together, the first claw hook (15) and the second claw hook (16) are misaligned.

6. The integrated netting and shotcrete device according to claim 1, characterized in that: The clamp is an arc-shaped clamp (17).

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