CN216157672U

CN216157672U - Self-propelled step trestle

Info

Publication number: CN216157672U
Application number: CN202121981821.XU
Authority: CN
Inventors: 张维颂; 毛成宝; 郑怀臣; 粟俊杰; 段长林
Original assignee: Hunan Wuxin Formwork Co Ltd
Current assignee: Hunan Wuxin Formwork Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-04-01
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a self-propelled step trestle, which comprises a walking base and a bridge floor which is obliquely arranged, wherein the bridge floor is arranged on the walking base and is adjustable in length. The utility model has the advantages of simple structure, convenient use, contribution to improving the construction efficiency, reducing the construction cost and the like.

Description

Self-propelled step trestle

Technical Field

The utility model relates to tunnel construction equipment, in particular to a self-propelled step trestle.

Background

The step excavation method is used as a tunnel construction process with the excavation speed second to that of a full-section excavation method, is widely applied to the tunnel excavation construction process, and is characterized in that: the tunnel is divided into more than two steps (including two steps, the same below) according to the designed section to form more than two working faces, and the tunnel is excavated step by step.

During the step excavation construction, a gentle slope is usually laid between an upper step and a lower step and between the lower step and the bottom of the tunnel by using muck, so that the construction is convenient for operators and construction machinery to construct on an upper working face. Therefore, as the tunnel is continuously tunneled and the steps are continuously advanced, the slope is continuously laid forwards. When the dregs slope of the lower step is laid, there are some adverse effects: firstly, construction machinery such as an excavator and the like is required to be occupied, and construction of other working faces is influenced; secondly, the residue soil laying area cannot be constructed; thirdly, when the excavation advances, the slope muck still needs to be continuously cleaned, and the subsequent inverted arch construction is influenced. Therefore, when the step excavation method is used for construction, the laid muck slope increases the construction cost and slows down the construction progress.

According to the existing trestle, the main beam is horizontally arranged, construction machinery passes through the main beam, and construction of the area below the main beam is not affected, so that construction efficiency is improved. The two ends of the main beam are respectively supported by the travelling wheels and the telescopic supporting legs and are provided with the travelling bogie in a matched mode, the telescopic supporting legs are also arranged on the travelling bogie, and the walking is realized in a stepping mode through the matching of the telescopic supporting legs and the travelling bogie of the bridge floor. The existing trestle cannot be applied to step excavation construction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides a self-propelled step trestle which is simple in structure, convenient to use, beneficial to improving the construction efficiency and reducing the construction cost.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a self-propelled step landing stage, includes walking base and the bridge floor that the slope was arranged, the bridge floor install in on the walking base and length-adjustable.

As a further improvement of the above technical solution: the bridge floor includes front axle and rear axle, the front axle with the rear axle all with the walking base is articulated, be equipped with on the walking base and be used for driving front axle luffing motion's front axle swing driving piece and be used for driving rear axle luffing motion's rear axle swing driving piece.

As a further improvement of the above technical solution: the walking base comprises a walking mechanism and a support rotatably connected with the walking mechanism, telescopic supporting legs are arranged on the support, and the front axle swinging driving piece and the rear axle swinging driving piece are arranged on the support.

As a further improvement of the above technical solution: the bracket is provided with a transition bridge between the front axle and the rear axle, and the front axle and the rear axle are both hinged with the transition bridge.

As a further improvement of the above technical solution: the walking mechanism is a crawler mechanism.

As a further improvement of the above technical solution: the running mechanism is a tire type mechanism.

As a further improvement of the above technical solution: the walking mechanism is a walking mechanism.

As a further improvement of the above technical solution: the front axle and/or the rear axle comprises more than two subsections, and the adjacent subsections are in sliding butt joint and are provided with telescopic driving pieces.

As a further improvement of the above technical solution: the front axle and/or the rear axle comprises more than two subsections, and a folding driving piece is hinged between the adjacent subsections and is provided with the folding driving piece.

As a further improvement of the above technical solution: the front axle swing driving piece and the rear axle swing driving piece are both oil cylinders, one end of each oil cylinder is hinged with the walking base, and the other end of each oil cylinder is hinged with the front axle; or the other end of the oil cylinder is hinged with the rear axle.

Compared with the prior art, the utility model has the advantages that: according to the self-propelled step trestle disclosed by the utility model, when the step excavation method is used for construction, the obliquely arranged bridge floor can replace a slope paved by using muck, so that the muck slope does not need to be paved, the construction from an operator and construction machinery to an upper operation surface through the bridge floor is convenient, the walking base below the bridge floor can drive the bridge floor to advance along the tunnel along with the continuous tunneling of the tunnel and the continuous advancing of the steps, the problems that the muck paving area cannot be constructed and the muck needs to be cleaned when the excavation advances are avoided, the structure is simple, the use is convenient, the construction efficiency is improved, and the construction cost is reduced; the length of the bridge deck is adjustable, the distance between the front and the rear can be further shortened when the bridge deck is extended, a larger construction space is provided for an excavated surface, and the operation of turning around and the like of a vehicle is facilitated; when large-scale blasting is needed, the exposed length of the bridge deck can be shortened, and damage possibly caused by blasting is reduced.

Drawings

Fig. 1 is a schematic front view of a self-propelled step trestle according to a first embodiment of the present invention.

Fig. 2 is a schematic top view of a self-propelled step landing stage according to a first embodiment of the present invention.

FIG. 3 is a schematic side view of a self-propelled step landing stage according to a first embodiment of the present invention.

FIG. 4 is a schematic view of a self-propelled step landing stage of the present invention in a lateral movement configuration.

Fig. 5 is a schematic front view of a self-propelled step trestle according to a second embodiment of the utility model.

Figure 6 is a schematic structural view of a first embodiment of the deck of the present invention.

Figure 7 is a schematic structural view of a second embodiment of the bridge deck according to the utility model.

The reference numerals in the figures denote: 1. a traveling base; 11. a traveling mechanism; 12. a support; 13. a telescopic leg; 14. a transition bridge; 2. a bridge deck; 21. a front axle; 22. a rear axle; 23. segmenting; 24. a telescopic driving member; 25. a folding drive member; 3. a front axle swing drive; 4. the rear axle swings the drive member.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples of the specification.

Example one

Fig. 1 to 4 show an embodiment of a self-propelled step trestle according to the present invention, which includes a walking base 1 and a bridge deck 2 arranged obliquely, wherein the bridge deck 2 is installed on the walking base 1 and has an adjustable length. The structure of the bridge deck 2 can be the same as that of the existing trestle, and is not described again.

When the self-propelled step trestle is constructed by a step excavation method, the obliquely arranged bridge floor 2 can replace a slope paved by using muck, so that the muck slope does not need to be paved, the construction from an operator to an upper operation surface through the bridge floor 2 is facilitated, the walking base 1 below the bridge floor 2 can drive the bridge floor 2 to move forwards along with the continuous tunneling of a tunnel and the continuous forward movement of the step, the problems that the muck paving area cannot be constructed and the muck needs to be cleaned when the excavation moves forwards are avoided, the structure is simple, the use is convenient, the construction efficiency is improved, and the construction cost is reduced; the length of the bridge deck 2 is adjustable, the distance between the front and the rear can be further shortened when the bridge deck is extended, a larger construction space is provided for an excavation surface, and the operation of turning around and the like of a vehicle is facilitated; when large-scale blasting is needed, the exposed length of the bridge deck 2 can be contracted, and the damage possibly caused by blasting can be reduced.

Further, in this embodiment, the bridge deck 2 includes a front axle 21 and a rear axle 22, the front axle 21 and the rear axle 22 are both hinged to the walking base 1, and the walking base 1 is provided with a front axle swinging driving member 3 for driving the front axle 21 to swing up and down and a rear axle swinging driving member 4 for driving the rear axle 22 to swing up and down. Can drive front axle 21, rear axle 22 luffing motion through front axle swing driving piece 3, rear axle swing driving piece 4, and then adjust front axle 21, rear axle 22's inclination, adapt to the not step of co-altitude in the tunnel better, it is more convenient to use. Wherein the heading direction of the tunnel is taken as the front.

Further, in this embodiment, the traveling base 1 includes a traveling mechanism 11 and a support 12 rotatably connected to the traveling mechanism 11 (for example, the support may be rotatably connected through a slewing bearing, etc.), the support 12 is provided with telescopic legs 13 (for example, the support is telescopic through a hydraulic cylinder, etc.), and the front axle swing driving member 3 and the rear axle swing driving member 4 are both disposed on the support 12. When the trestle passes the vehicle, the telescopic supporting legs 13 on the support 12 extend out, the walking mechanism 11 rises and is not contacted with the ground, and the telescopic supporting legs 13 bear the load, so that the stability and the reliability are better; when the trestle needs to move back and forth, the telescopic supporting legs 13 retract to be not in contact with the ground so as to reduce the resistance during walking, and the walking mechanism 11 drives the bridge deck 2 to move back and forth; if the trestle needs to move left and right in the tunnel (or along the width direction of the tunnel), the telescopic supporting legs 13 extend out, the travelling mechanism 11 rises and is not in contact with the ground, then the travelling mechanism 11 rotates 90 degrees relative to the support 12, finally the telescopic supporting legs 13 retract and are not in contact with the ground, the travelling mechanism 11 can drive the bridge deck 2 to move left and right, the use is very convenient and flexible in the limited space of the tunnel, and other machines are not needed.

In a preferred embodiment, the support 12 is provided with the transition bridge 14 between the front bridge 21 and the rear bridge 22, that is, the transition bridge 14 is used to reduce the gap between the front bridge 21 and the rear bridge 22, so that other construction machines can conveniently pass through the bridge deck 2, and the front bridge 21 and the rear bridge 22 are both hinged with the transition bridge 14.

In a preferred embodiment, the running gear 11 is a crawler belt. The crawler mechanism has large contact area with the ground, strong bearing capacity and good friction, and is suitable for various rugged grounds and softer grounds.

As a preferred embodiment, the front axle swing driving member 3 and the rear axle swing driving member 4 are both oil cylinders, one end of each oil cylinder is hinged with the walking base 1, and the other end of each oil cylinder is hinged with the front axle 21 or the rear axle 22. The front axle 21 and the rear axle 22 can be driven to swing up and down by the stretching of the oil cylinder, and the structure is simple and reliable.

Example two

Fig. 5 shows another embodiment of the self-propelled step trestle of the present invention, which is basically the same as the first embodiment except that: the traveling mechanism 11 is a tire type mechanism. Compared with a crawler-type mechanism, the tire-type mechanism has lower cost and higher flexibility. Of course, in other embodiments, the traveling mechanism 11 may be a walking mechanism, and the whole trestle can move back and forth and left and right in the same way.

EXAMPLE III

Fig. 6 shows another embodiment of the self-propelled step trestle of the present invention, which is basically the same as the first embodiment except that: in this embodiment, each of the front axle 21 and the rear axle 22 includes two or more segments 23, and the adjacent segments 23 are in sliding butt joint and are provided with the telescopic driving member 24, that is, the telescopic driving member 24 stretches and retracts to drive the adjacent segments 23 to slide relatively, so that the lengths of the front axle 21 and the rear axle 22 can be adjusted. Wherein the telescopic drive 24 may be, for example, a cylinder or the like. Of course, in other embodiments, the length of only the front axle 21 or only the rear axle 22 may be adjusted in a telescopic manner.

Example four

Fig. 7 shows another embodiment of the self-propelled step trestle of the present invention, which is basically the same as the first embodiment except that: in this embodiment, each of the front axle 21 and the rear axle 22 includes two or more segments 23, and the adjacent segments 23 are hinged to each other and provided with a folding driving member 25, that is, the folding driving member 25 drives the adjacent segments 23 to bend relatively, so that the length of the front axle 21 and the length of the rear axle 22 can be adjusted. Wherein the folding drive 25 may be, for example, a cylinder or the like. Of course, in other embodiments, the length of only the front axle 21 or only the rear axle 22 may be adjusted by the folding structure.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides a self-propelled step landing stage which characterized in that: bridge floor (2) of arranging including walking base (1) and slope, bridge floor (2) install in on walking base (1) and adjustable length, bridge floor (2) are including front axle (21) and rear axle (22), front axle (21) with rear axle (22) all with walking base (1) is articulated, be equipped with on walking base (1) and be used for driving front axle (21) luffing motion's front axle swing driving piece (3) and be used for driving rear axle (22) luffing motion's rear axle swing driving piece (4).

2. The self-propelled step trestle of claim 1, wherein: walking base (1) include running gear (11) and rotate support (12) of being connected with running gear (11), be equipped with flexible landing leg (13) on support (12), front axle swing driving piece (3) with rear axle swing driving piece (4) are all located on support (12).

3. The self-propelled step trestle of claim 2, wherein: the support (12) is provided with a transition bridge (14) between the front axle (21) and the rear axle (22), and the front axle (21) and the rear axle (22) are hinged with the transition bridge (14).

4. The self-propelled step trestle of claim 2, wherein: the travelling mechanism (11) is a crawler mechanism.

5. The self-propelled step trestle of claim 2, wherein: the travelling mechanism (11) is a tire type mechanism.

6. The self-propelled step trestle of claim 2, wherein: the walking mechanism (11) is a walking mechanism.

7. The self-propelled step trestle of claim 1, wherein: the front axle (21) and/or the rear axle (22) comprises more than two subsections (23), and adjacent subsections (23) are in sliding butt joint and are provided with telescopic driving pieces (24).

8. The self-propelled step trestle of claim 1, wherein: the front axle (21) and/or the rear axle (22) comprises more than two segments (23), and a folding driving piece (25) is hinged between the adjacent segments (23).

9. A self-propelled step trestle according to any of claims 1 to 8, wherein: the front axle swing driving piece (3) and the rear axle swing driving piece (4) are both oil cylinders, one end of each oil cylinder is hinged with the walking base (1), and the other end of each oil cylinder is hinged with the front axle (21); or the other end of the oil cylinder is hinged with the rear axle (22).