A main clamping device for arch frame installation in tunnel construction

Abstract

The present invention discloses a main clamping device for installing tunnel arch frame, which includes a rotating seat, a clamping head base, a rubber support back plate, a steel arch frame clamping plate, a clamping connecting rod and a longitudinal slewing support device. The rotating seat is fixedly connected to the longitudinal slewing support device with bolts, and the rotating seat and the clamping head base are fixedly connected with a square tube. One side of the clamping head base is a rubber support back plate, and the other side is hinged with a clamping connecting rod. The movable end of the clamping connecting rod is hinged with a steel arch frame clamping plate, and the longitudinal slewing support device is fixedly connected to the base of the construction platform. It is a main clamping device for installing a steel arch frame that can rotate 180°, which realizes that the first section (middle section) of the steel arch frame can be automatically picked up under any working conditions, and can be safely and evenly clamped. During construction, only one worker needs to be slightly assisted to complete it, which solves the problem of hard docking that some similar equipment requires complex and precise operations and is time-consuming and labor-intensive.

Description

Technical Field

[0001] The invention relates to a clamping device, in particular to a main clamping device used for installing a tunnel construction arch frame, and belongs to the technical field of construction machinery. Background Art

[0002] At present, there are some construction equipments for steel arch installation in tunnel construction on the market, and their functions are mainly reflected in the installation and construction of steel arch. In the installation and construction of arch, the automatic picking and clamping of steel arch is a very difficult problem to solve, which has not been solved yet. Some manufacturers' products can achieve automatic picking under very ideal conditions, but they also need the assistance of workers to complete, but others basically need manual picking, which requires a lot of manpower on the one hand, and there are great safety risks on the other hand. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to provide a main clamping device for the installation of tunnel construction arch frames, which is a main clamping device for the installation of steel arch frames that can rotate 180°. It realizes that the first section (middle section) of the steel arch frame can be automatically picked up under any working conditions, and can clamp safely and evenly. During construction, only one worker needs to provide a little assistance to complete it, which solves the problem of hard docking of some similar equipment that requires complex and precise operation and is time-consuming and labor-intensive.

[0004] The technical solution of the present invention is: a main clamping device for tunnel construction arch frame installation, which includes a rotating seat, a clamping head base, a rubber support back plate, a steel arch frame clamping plate, a clamping connecting rod and a longitudinal slewing support device. The rotating seat is fixedly connected to the longitudinal slewing support device with bolts, and the rotating seat and the clamping head base are fixedly connected with a square tube. One side of the clamping head base is a rubber support back plate, and the other side is hinged with a clamping connecting rod. The movable end of the clamping connecting rod is hinged with a steel arch frame clamping plate, and the longitudinal slewing support device is fixedly connected to the base of the construction platform.

[0005] A clamping oil cylinder is hinged in the middle of the clamping connecting rod, and the other end of the clamping oil cylinder is hinged on the side of the clamping head base.

[0006] The rubber support back plate is connected to the clamping head base by bolts, and a rubber plate is embedded in the rubber support back plate.

[0007] The longitudinal rotary support device is a worm gear structure, and the worm gear shaft is fixedly connected to the rotating seat.

[0008] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention adopts the above technical scheme, and the main function of the device is: when the multifunctional aerial work trolley is installing the steel arch frame, the middle steel arch frame is first fixedly installed on the middle top of the tunnel, and the entire construction process can be fully mechanized. During the steel arch frame installation work, the safety factor of the workers is greatly improved, and the operating efficiency and construction quality are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 : A schematic diagram of the structure of a main clamping device for installing an arch frame in tunnel construction;

[0010] Figure 2 : A schematic diagram of the structure of a main clamping device for installing an arch frame in tunnel construction;

[0011] Figure 3 : Working state diagram of a main clamping device used for tunnel construction arch installation;

[0012] Figure 4 : Working state diagram of a main clamping device used for arch installation in tunnel construction. DETAILED DESCRIPTION

[0013] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings of this specification.

[0014] Example: As shown in the attached Figures 1 to 4 As shown, a main clamping device for installing a tunnel construction arch frame includes a rotating seat 1, a clamping head base 2, a rubber support back plate 3, a steel arch frame clamping plate 4, a clamping connecting rod 5 and a longitudinal slewing support device 7. The rotating seat 1 is fixedly connected to the longitudinal slewing support device 7 with bolts, and the rotating seat 1 and the clamping head base 2 are fixedly connected with a square tube. One side of the clamping head base 2 is a rubber support back plate 3, and the other side is hinged with a clamping connecting rod 5. The movable end of the clamping connecting rod 5 is hinged with a steel arch frame clamping plate 4, and the longitudinal slewing support device 7 is fixedly connected to the base of the construction platform. The rotating seat 1 is a connecting member of the main clamping device. The entire clamping device is installed on the longitudinal slewing support 7 through the rotating seat 1, and rotates forward and downward 180 degrees with it, so that the middle section of the arch frame can be quickly picked up and lifted into place.

[0015] Furthermore, a clamping oil cylinder 6 is hinged in the middle of the clamping connecting rod 5, and the other end of the clamping oil cylinder 6 is hinged on the side of the clamping head base 2. The clamping head base 2 is a supporting and positioning structure of the steel arch frame, and is also a mounting component for the clamping connecting rod 5 and the clamping oil cylinder 6.

[0016] Furthermore, the rubber support back plate 3 is connected to the clamping head base 2 by bolts, and a rubber plate is embedded in the rubber support back plate 3. The rubber support back plate 3 is bolted and installed on the clamping head base 2, and is a steel arch support positioning component. It is characterized by a 12mm thick cloth-reinforced rubber plate embedded in a 12mm steel plate with limit plates welded on four sides, and the rubber plate protrudes 3 to 4mm from the limit plates on the four sides. This embedded design solves the problem of easy crushing and debonding of the edge of the rubber plate. At the same time, this straight rubber support back plate design enables the clamping device to be quickly and easily detached from the steel arch after the arch is installed, thereby improving construction efficiency.

[0017] The steel arch clamping plate 4 is a positioning clamping device for the steel arch. The outer contour of the clamping piece just coincides with the wing edge and web of the I-beam, achieving a safe and reliable clamping effect. Another feature of the steel arch clamping plate design is that a hinge axis is used to connect the clamping connecting rod 5, ensuring that when clamping a steel arch of any specification, the clamping surface of the clamping piece is in contact with the inner contour surface of the steel arch, without point or line contact, further ensuring the safety of the steel arch clamping.

[0018] Furthermore, the longitudinal rotary support device 7 is a worm gear structure, and the worm gear shaft is fixedly connected to the rotating seat 1.

[0019] The working principle of a main clamping device for tunnel construction arch installation is as follows:

[0020] 1. Construction platform in place: Operate the working arm to move the construction platform to a position about 2 meters from the tunnel face and about 2 meters from the ground, and rotate the clamping head (or main clamping device) to the lowest position.

[0021] 2. Clamp the steel arch frame: first operate the hydraulic winch to lower the wire rope and the steel arch frame clamp, clamp the wing edge of the steel arch frame with the steel arch frame clamp, and then operate the hydraulic winch to rotate and reel in the wire rope to lift the steel arch frame clamp and the steel arch frame it clamps. When the steel arch frame is lifted into the clamping head, operate the clamping cylinder to make the clamping head clamp the arch frame, and then release the clamp.

[0022] 3. Install the steel arch frame in place: After the clamping head clamps the steel arch frame, operate the longitudinal slewing support to rotate the clamping support device (or clamping head) upward to a vertical position.

[0023] The subsequent work is to operate the working arm to slowly move the construction platform upward and forward until the steel arch frame is basically in contact with the tunnel arch and the tunnel face (it may be necessary to operate the plane slewing support to make the steel arch frame parallel to the tunnel face). At the same time, the arch frame should be in the middle of the tunnel to achieve the middle section (first section) of the steel arch frame in place. At this time, stop operating the construction platform and the working arm to ensure that their position remains unchanged.

[0024] The parts not described in detail in the present invention are all known technologies to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A main clamping device for installing an arch frame in tunnel construction, characterized in that: It comprises a rotating seat (1), a clamping head base (2), a rubber support back plate (3), a steel arch frame clamping plate (4), a clamping connecting rod (5) and a longitudinal slewing support device (7). The rotating seat (1) is fixedly connected to the longitudinal slewing support device (7) by bolts. The rotating seat (1) and the clamping head base (2) are fixedly connected by a square tube. One side of the clamping head base (2) is a rubber support back plate (3), and the other side is hinged with a clamping connecting rod (5). The movable end of the clamping connecting rod (5) is hinged with a steel arch frame clamping plate (4). The steel arch frame clamping plate (4) is a positioning clamping device of the steel arch frame. The outer contour of the clamping part just coincides with the wing edge and the web of the I-beam. The longitudinal slewing support device (7) is fixedly connected to the base of the construction platform. The working process is as follows: operate the working arm to move the construction platform to a position about 2 meters away from the tunnel face and about 2 meters from the ground, and rotate the main clamping device to the lowest position; first operate the hydraulic winch to lower the wire rope and the steel arch frame clamp, and clamp the steel arch frame clamp to the wing edge of the steel arch frame, and then operate the hydraulic winch to rotate and reel in the wire rope to lift the steel arch frame clamp and the steel arch frame clamped by it. When the steel arch frame is lifted into the main clamping device, operate the clamping cylinder (6) to clamp the arch frame, and then release the clamp; after the main clamping device clamps the steel arch frame, operate the longitudinal slewing support to rotate the main clamping device upward to a vertical position.

2. A main clamping device for tunnel construction arch installation according to claim 1, characterized in that: A clamping oil cylinder (6) is hinged in the middle of the clamping connecting rod (5), and the other end of the clamping oil cylinder (6) is hinged on the side of the clamping head base (2).

3. A main clamping device for tunnel construction arch installation according to claim 1, characterized in that: The rubber support back plate (3) and the clamping head base (2) are connected by bolts, and a rubber plate is also embedded in the rubber support back plate (3).

4. A main clamping device for tunnel construction arch installation according to claim 1, characterized in that: The longitudinal slewing support device (7) is a worm gear structure, and the worm gear shaft is fixedly connected to the rotating seat (1).

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