Hydraulic trestle for pouring tunnel inverted arch

Abstract

The utility model provides a hydraulic trestle for tunnel inverted arch pouring, which comprises a main bridge, the front side and the rear side of the main bridge are respectively and rotatably connected with a front ramp and a rear ramp, the left side and the right side of the main bridge are respectively provided with a walking system and a supporting beam, the walking system is provided with a walking wheel, a steering shaft and a hydraulic cylinder, and the steering shaft controls the walking direction of the walking wheel. The hydraulic trestle can move in the front direction, the rear direction, the left direction and the right direction, the position of the hydraulic trestle can be conveniently adjusted, inverted arch construction is more accurate, the walking system drives the whole hydraulic trestle to ascend and descend through ascending and descending of a hydraulic cylinder, a supporting beam is lifted, and walking wheels can conveniently drive the hydraulic trestle to move. The supporting legs are welded to the lower ends of the supporting beams, it is guaranteed that the supporting effect of the supporting beams is stable, the muck truck and the concrete transport truck run more safely and rapidly, the supporting beams can bear larger pressure, the service life of the supporting beams is longer, the transportation pipelines are installed on the protective fence, concrete pouring is convenient, and the concrete pouring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of invert casting, in particular to a hydraulic trestle for tunnel invert casting. Background Art

[0002] The existing hydraulic trestle is not flexible in moving forward and backward and left and right, and it is not convenient to adjust the position of the hydraulic trestle, which has a great impact on the project. The support beam is raised and lowered by the hydraulic cylinder, which easily leads to poor stability of the support beam and shortened service life of the support beam, which easily affects the driving of muck trucks and concrete transport trucks on the bridge. In addition, the pouring of concrete on the concrete transport truck is also inconvenient, resulting in slow construction efficiency.

[0003] In the prior art, there is a patent with application number 202210823519.4 that discloses a self-propelled hydraulic trestle for tunnel construction, including a main bridge, a front bridge and a rear bridge. The front and rear ends of the main bridge are provided with a transverse movement mechanism, the upper end of the front bridge is provided with a left telescopic mechanism, the upper end of the rear bridge is provided with a right telescopic mechanism, the front and rear ends of the main bridge are provided with an automatic walking device, and a support device is provided at the middle position of the lower end of the main bridge. All components of the invention adopt hydraulic transmission, and by adopting hydraulic transmission, the trestle has its own power, which can be conveniently moved forward, backward, and left and right. However, the supporting device of the patent is provided with a telescopic cylinder, a movable frame, a buffer block, a buffer pad, a movable block, etc. Although it has many functions, the stability of the supporting device is poor, and it will cause the service life of the supporting device to be shortened. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a hydraulic trestle for tunnel invert casting, aiming to solve the problems of narrow driving lanes on the main bridge of the hydraulic trestle in the prior art, inflexible front and rear movement and left and right movement of the hydraulic trestle, inconvenient adjustment of the position of the hydraulic trestle, poor stability of the supporting beam and short service life.

[0005] In order to solve the above technical problems, the utility model provides a hydraulic trestle for tunnel invert casting, including a main bridge, the front and rear sides of the main bridge are rotatably connected with a front ramp and a rear ramp respectively, the left and right sides of the main bridge are equipped with a walking system and a support beam, the walking system has walking wheels, a steering shaft and a hydraulic cylinder, the left and right sides of the main bridge are equipped with protective fences, and transportation pipelines are installed on the protective fences.

[0006] The front ramp and the rear ramp are respectively provided with two supporting inclined plates, one end of each inclined plate is rotatably connected to the main bridge, and the other end is connected to a winch through a suspension rope, and the winch is installed on the protective fence.

[0007] The two supporting inclined plates of the front ramp and the rear ramp are welded together through steel bars, and more than four steel bars are welded on the two supporting inclined plates of the front ramp and the rear ramp.

[0008] The support beam is welded on the main bridge, and a support foot is welded at the lower end of the support beam, and the contact area between the support foot and the ground is larger than the cross-sectional area of ​​the support beam.

[0009] One end of the transport pipeline is connected to the discharge pipe of the concrete transport vehicle, and the other end is connected to the pouring port of the invert formwork.

[0010] The steering angle of the steering shaft is 30 degrees to 90 degrees. The steering shaft drives the walking wheel to rotate 90 degrees. The walking wheel is connected to a motor for driving the walking wheel to move forward or backward.

[0011] There are more than 4 walking systems and more than 4 supporting beams installed on the left and right sides of the main bridge.

[0012] More than two transport pipelines are installed on the protective fence.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has a walking system with walking wheels, a steering shaft and a hydraulic cylinder. The steering shaft controls the walking direction of the walking wheels, and can realize the movement of the hydraulic trestle in four directions of front, back, left and right, which is convenient for adjusting the position of the hydraulic trestle and realizing more accurate arch construction. The walking system is lifted and lowered by the hydraulic cylinder, which drives the entire hydraulic trestle to rise and fall, so that the support beam is lifted, which is convenient for the walking wheel to drive the hydraulic trestle to move. Compared with the prior art, the support beam is welded on the main bridge, and the lower end of the support beam is welded with a support foot to ensure the stable support effect of the support beam, so that the operation of the dregs truck and the concrete transport truck is safer and faster, the support beam can withstand greater pressure and the service life of the support beam is longer, and a transport pipeline is installed on the protective fence to facilitate concrete pouring and improve concrete pouring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a rear ramp diagram of the utility model;

[0018] Figure 3 It is a front ramp diagram of the utility model;

[0019] In the figure: 1-main bridge, 2-front ramp, 3-rear ramp, 4-support beam, 5-walking system, 6-protective fence, 7-transport pipeline, 8-lifting rope, 9-support foot, 10-support inclined plate, 11-reinforcement bar. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, each embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. However, it can be understood by those skilled in the art that in each embodiment of the utility model, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the utility model. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0021] Example 1

[0022] like Figure 1 A hydraulic trestle for tunnel invert casting shown in the figure comprises a main bridge 1, wherein the front and rear sides of the main bridge 1 are rotatably connected with a front ramp 2 and a rear ramp 3 respectively, and the left and right sides of the main bridge 1 are both equipped with a walking system 5 and a support beam 4, wherein the walking system 5 has walking wheels, a steering shaft and a hydraulic cylinder, and the left and right sides of the main bridge 1 are equipped with a protective fence 6, and a transport pipeline 7 is installed on the protective fence 6.

[0023] There are two supporting inclined plates 10 on the front ramp 2 and the rear ramp 3 respectively. One end of each inclined plate is rotatably connected to the main bridge 1, and the other end is connected to the winch through a suspension rope 8. The winch is installed on the protective fence 6.

[0024] The two supporting inclined plates 10 of the front ramp 2 and the rear ramp 3 are welded together through the steel bars 11 , and more than four steel bars 11 are welded to the two supporting inclined plates 10 of the front ramp 2 and the rear ramp 3 .

[0025] The support beam 4 is welded to the main bridge 1 , and a support foot 9 is welded to the lower end of the support beam 4 . The contact area between the support foot 9 and the ground is larger than the cross-sectional area of ​​the support beam 4 .

[0026] One end of the transport pipeline 7 is connected to the discharge pipe of the concrete transport vehicle, and the other end is connected to the pouring port of the invert formwork.

[0027] The steering angle of the steering shaft is 30 degrees to 90 degrees. The steering shaft drives the walking wheel to rotate 90 degrees. The walking wheel is connected to a motor for driving the walking wheel to move forward or backward.

[0028] More than four walking systems 5 and more than four supporting beams 4 are installed on both the left and right sides of the main bridge 1 .

[0029] More than two transport pipelines 7 are installed on the protective fence 6 .

[0030] Example 2

[0031] like Figure 1 A hydraulic trestle for tunnel invert casting shown in the figure comprises a main bridge 1, wherein the front and rear sides of the main bridge 1 are rotatably connected with a front ramp 2 and a rear ramp 3 respectively, so as to facilitate muck trucks and concrete transport trucks to get on and off the bridge. A traveling system 5 and a support beam 4 are installed on the left and right sides of the main bridge 1. The hydraulic trestle is moved by the traveling system 5, and the main bridge 1 is supported by the support beam 4, so as to facilitate the driving of muck trucks and concrete transport trucks. The traveling system 5 is provided with traveling wheels, a steering shaft and a hydraulic cylinder. The left and right sides of the main bridge 1 are provided with protective fences 6, and a transport pipeline 7 is installed on the protective fences 6.

[0032] Three walking systems 5 and three supporting beams 4 are installed on the left side of the main bridge 1, and three walking systems 5 and three supporting beams 4 are installed on the right side of the main bridge 1. A transport pipeline 7 is installed on the protective fences 6 on the left and right sides of the main bridge 1 respectively.

[0033] Example 3

[0034] The use principle of this utility model:

[0035] 1. First, extend the hydraulic cylinder of the walking system 5 to lift the support leg 9 of the support beam 4 off the ground, so that the walking wheel touches the ground, adjust the direction of the walking wheel through the steering shaft, and then drive the walking wheel through the motor to move the hydraulic trestle to the working position;

[0036] 2. Lengthen the hydraulic cylinder of the traveling system 5 so that the traveling wheels leave the ground and the legs 9 of the supporting beam 4 touch the ground;

[0037] 3. The muck truck drives to the main bridge 1 via the rear ramp 3 to operate. After the muck truck completes the operation, it installs the inverted arch formwork. It is best for the concrete transport truck to drive to the main bridge 1 via the rear ramp 3, and connect the transport pipeline 7 to the discharge pipe of the concrete transport truck and the casting port of the inverted arch formwork for pouring.

[0038] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A hydraulic trestle for tunnel invert casting, comprising a main bridge (1), characterized in that: The front and rear sides of the main bridge (1) are rotatably connected to a front ramp (2) and a rear ramp (3), respectively; the left and right sides of the main bridge (1) are both equipped with a walking system (5) and a support beam (4); the walking system (5) is provided with a walking wheel, a steering shaft and a hydraulic cylinder; the left and right sides of the main bridge (1) are provided with a protective fence (6), and a transport pipeline (7) is installed on the protective fence (6).

2. The hydraulic trestle for tunnel invert casting according to claim 1 is characterized in that: The front ramp (2) and the rear ramp (3) are respectively provided with two supporting inclined plates (10), one end of each supporting inclined plate (10) is rotatably connected to the main bridge (1), and the other end is connected to a winch through a suspension rope (8), and the winch is installed on the protective fence (6).

3. The hydraulic trestle for tunnel invert casting according to claim 2 is characterized in that: The two supporting inclined plates (10) of the front ramp (2) and the rear ramp (3) are welded together through steel bars (11), and more than four steel bars (11) are welded to the two supporting inclined plates (10) of the front ramp (2) and the rear ramp (3).

4. The hydraulic trestle for tunnel invert casting according to claim 1, characterized in that: The support beam (4) is welded to the main bridge (1), a support foot (9) is welded to the lower end of the support beam (4), and the contact area between the support foot (9) and the ground is larger than the cross-sectional area of ​​the support beam (4).

5. The hydraulic trestle for tunnel invert casting according to claim 1, characterized in that: One end of the transport pipeline (7) is connected to the discharge pipe of the concrete transport vehicle, and the other end is connected to the pouring port of the invert formwork.

6. The hydraulic trestle for tunnel invert casting according to claim 1, characterized in that: The steering angle of the steering shaft is 30 degrees to 90 degrees. The steering shaft drives the walking wheel to rotate 90 degrees. The walking wheel is connected to a motor for driving the walking wheel to move forward or backward.

7. The hydraulic trestle for tunnel invert casting according to claim 1, characterized in that: More than four walking systems (5) and more than four supporting beams (4) are installed on both the left and right sides of the main bridge (1).

8. The hydraulic trestle for tunnel invert casting according to claim 1, characterized in that: More than two transport pipelines (7) are installed on the protective fence (6).

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