阅读说明：本技术 一种大直径盾构隧道组装式移动爬梯 (Assembled movable crawling ladder for large-diameter shield tunnel ) 是由 杜昌言 夏毅敏 历朋林 肖雪萌 王键 李海振 董冰 贺小宾 胡晋春 段其广 王超 于 2021-08-19 设计创作，主要内容包括：本发明提供一种大直径盾构隧道组装式移动爬梯,其包括箱涵和隧道侧管片,还包括爬梯、上部滑轮和下部滑轮,所述爬梯的上段通过上部滑轮与箱涵的顶端滑动连接,所述爬梯的下段通过下部滑轮与隧道侧管片的下部滑动连接。这样在盾构掘进过程中,后面箱涵部分进行同步施工时,工作人员只需对爬梯施加一点力即可推动爬梯在隧道内快速地移动位置,从而有效解决了盾构机掘进过程中盾构机人员在从箱涵上端通往下端进行同步施工时需更换爬梯的问题,且本发明的材料、结构简单,易制作,提高施工效率,体现工程施工标准化建设,产生较好的社会效益。(The invention provides an assembled movable crawling ladder for a large-diameter shield tunnel, which comprises a box culvert, tunnel side pipe pieces, a crawling ladder, an upper pulley and a lower pulley, wherein the upper section of the crawling ladder is in sliding connection with the top end of the box culvert through the upper pulley, and the lower section of the crawling ladder is in sliding connection with the lower parts of the tunnel side pipe pieces through the lower pulley. Therefore, in the shield tunneling process, when the box culvert part behind the shield tunneling machine is synchronously constructed, a worker can push the ladder stand to rapidly move in the tunnel by applying little force on the ladder stand, so that the problem that the ladder stand needs to be replaced when the shield tunneling machine worker synchronously constructs from the upper end to the lower end of the box culvert in the shield tunneling process is effectively solved.)

1. The assembled movable crawling ladder for the large-diameter shield tunnel comprises a box culvert (1) and tunnel side pipe pieces (3), and is characterized by further comprising a crawling ladder (2), an upper pulley (4) and a lower pulley (10), wherein the upper section of the crawling ladder (2) is connected with the top end of the box culvert (1) in a sliding mode through the upper pulley (4), and the lower section of the crawling ladder (2) is connected with the lower portion of the tunnel side pipe pieces (3) in a sliding mode through the lower pulley (10).

2. The large-diameter shield tunnel assembled moving ladder stand according to claim 1, wherein the ladder stand (2) comprises a first ladder stand (5) and a second ladder stand (9), the upper pulley (4) is detachably mounted on the upper section of the first ladder stand (5), and the lower pulley (10) is detachably mounted on the lower section of the second ladder stand (9); the top end of the second ladder stand (9) is detachably connected with the lower end of the first ladder stand (5).

3. Assembled mobile ladder of a large diameter shield tunnel according to claim 2, characterized in that a ladder intermediate platform (7) is arranged between the first ladder (5) and the second ladder (9).

4. The assembled movable ladder stand of the large-diameter shield tunnel according to claim 3, wherein a middle pulley (8) is arranged at the middle platform (7) of the ladder stand, and the middle platform (7) of the ladder stand is slidably connected with the middle part of the tunnel side pipe piece (3) through the middle pulley (8).

5. The assembled movable ladder stand of the large-diameter shield tunnel according to claim 4, wherein hand brakes are arranged on the upper pulley (4), the lower pulley (10) and the middle pulley (8).

6. A large diameter shield tunnel assembly mobile ladder according to claim 3 or 4, characterised in that the angle of inclination of the first ladder (5) is set opposite to the angle of inclination of the second ladder (9).

7. The assembled moving ladder stand for the large-diameter shield tunnel according to claim 6, wherein the number of the second ladder stands (9) is two, and the two second ladder stands (9) are respectively arranged on both sides of the first ladder stand (5).

8. The assembled moving ladder stand of the large-diameter shield tunnel according to claim 7, wherein a guardrail (6) is arranged on each of the first ladder stand (5) and the second ladder stand (9).

Technical Field

The invention relates to the technical field of engineering construction, in particular to an assembled movable crawling ladder for a large-diameter shield tunnel.

Background

The shield machine is a large-scale excavating device integrating multiple disciplinary technologies such as machinery, electronics, information, hydraulic pressure and the like. Compared with other construction methods, the shield method has the advantages of high tunneling speed, short construction period, high safety and the like, and is widely applied to subway tunnel engineering and mountain-crossing tunnel engineering. However, in the excavation process of the large-diameter shield tunneling machine, besides the excavation of the shield tunneling machine, the synchronous construction at the rear end of the shield tunneling machine is also very important, and workers need to perform operation from the upper end of a box culvert to the bottom end of a tunnel, so that the ladder stand is required to serve as a bridge, but the ladder stand also needs to move forwards along with the forward excavation of the shield tunneling machine.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the large-diameter shield tunnel assembled movable crawling ladder which can slide depending on a box culvert and duct pieces in a tunnel, so that the crawling ladder can move quickly in the tunnel, and workers can work conveniently in the tunnel.

The technical scheme adopted by the invention to solve the problems is as follows: the utility model provides an assembled removal cat ladder of major diameter shield tunnel, its includes box culvert and tunnel side section of jurisdiction, still includes cat ladder, upper portion pulley and lower part pulley, the top sliding connection of upper portion pulley and box culvert is passed through to the upper segment of cat ladder, the hypomere of cat ladder passes through the lower part sliding connection of lower part pulley and tunnel side section of jurisdiction. Therefore, in the shield tunneling process, when the box culvert part at the back is synchronously constructed, the worker only needs to apply a little force on the crawling ladder to push the crawling ladder to rapidly move in the tunnel, and the construction progress is integrally accelerated.

The invention further improves the structure that the ladder stand comprises a first ladder stand and a second ladder stand, the upper pulley is detachably arranged on the upper section of the first ladder stand, and the lower pulley is detachably arranged on the lower section of the second ladder stand; the top of second cat ladder can be dismantled with the lower extreme of first cat ladder and link together, and in some places that highly are lower like this, can make the height reduction of whole cat ladder through dismantling first cat ladder or second cat ladder, make it suit with the structure in whole tunnel, effectively solve shield structure machine and dig in-process shield structure machine personnel from the box culvert upper end to need to change the problem of cat ladder when the lower extreme carries out the synchronous construction.

The invention further improves the structure that a middle platform of the crawling ladder is arranged between the first crawling ladder and the second crawling ladder, so that a worker can conveniently stand between the first crawling ladder and the second crawling ladder to work, or can conveniently place some construction tools on the crawling ladder.

The middle platform of the crawling ladder is connected with the middle part of the tunnel side pipe piece in a sliding mode through the middle pulley, and therefore the first crawling ladder and the second crawling ladder can move synchronously in the moving process of the crawling ladder.

The hand brakes are arranged on the upper pulley, the lower pulley and the middle pulley, so that the ladder stand is prevented from moving suddenly when workers climb or work, and accidents of the workers are avoided.

The invention further improves that the inclination angle of the first ladder stand is opposite to that of the second ladder stand, so that the whole ladder stand is more stable.

The invention further improves the structure that the number of the second crawling ladders is two, the two second crawling ladders are respectively arranged on two sides of the first crawling ladder, so that the stress of the whole crawling ladder is balanced, and meanwhile, the two second crawling ladders can also respectively accommodate two groups of people to stand on the second crawling ladders for working.

The invention is further improved in that the first ladder stand and the second ladder stand are both provided with guardrails, so that people on the first ladder stand and the second ladder stand can be prevented from accidentally falling off the ladder stands.

According to the technical scheme, the invention has the following advantages:

(1) the invention solves the problem that the stairs are inconvenient to move when the box culvert part at the back is synchronously constructed in the tunneling process of the shield tunneling machine; the ladder provided by the invention can directly move through the upper pulleys, the middle pulleys and the lower pulleys, and a quick moving platform is provided for the synchronous construction of the box culvert part behind, so that the overall construction progress is accelerated;

(2) the invention is erected between the box culvert and the tunnel side pipe sheet in the tunnel, the whole platform has stable structure, provides a safe channel for synchronous constructors and ensures the safe construction;

(3) in addition, the material and the structure of the invention are simple, the manufacture is easy, and the invention has very wide application prospect.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a using state diagram of the assembled movable ladder stand of the large-diameter shield tunnel of the invention;

FIG. 2 is a structure view of the assembled movable ladder stand of the large-diameter shield tunnel of the invention;

in the figure: 1-box culvert; 2-climbing a ladder; 3-tunnel side duct pieces; 4-upper pulleys; 5-a first ladder stand; 6, protecting the fence; 7-climbing a ladder middle platform; 8-middle pulley; 9-a second ladder stand; 10-lower pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 2, the invention provides an assembled movable ladder stand for a large-diameter shield tunnel, which comprises a box culvert 1 and a tunnel side pipe piece 3 arranged in a tunnel, and further comprises a ladder stand 2 arranged between the box culvert 1 and the tunnel side pipe piece 3, wherein an upper pulley 4 and a lower pulley 10 are respectively arranged at the upper section and the lower section of the ladder stand 2, the upper section of the ladder stand 2 is in sliding connection with the top end of the box culvert 1 through the upper pulley 4, the lower section of the ladder stand 2 is in sliding connection with the lower part of the tunnel side pipe piece 3 through the lower pulley 10, and the ladder stand 2 can move back and forth in the tunnel through the upper pulley 4 and the lower pulley 10, so that a constructor can conveniently perform synchronous construction and rapid operation on a specific site.

Specifically, the ladder stand 2 comprises a first ladder stand 5 and a second ladder stand 9, the upper pulley 4 is detachably mounted on the upper section of the first ladder stand 5, and the lower pulley 10 is detachably mounted on the lower section of the second ladder stand 9. The top end of the second ladder stand 9 is detachably connected with the lower end of the first ladder stand 5, and the inclination direction of the first ladder stand 5 is opposite to that of the second ladder stand 9. Further, in order to improve the stability and safety of the whole ladder stand 2, the number of the second ladder stands 9 is preferably two, and the two second ladder stands 9 are respectively arranged at two sides of the first ladder stand 5, and the guard rails 6 are arranged on the first ladder stand 5 and the second ladder stands 9.

Further, be provided with cat ladder middle platform 7 between first cat ladder 5 and the second cat ladder 9, still be provided with middle part pulley 8 in cat ladder middle platform 7 department, cat ladder middle platform 7 passes through middle part pulley 8 and the middle part sliding connection of tunnel side section of jurisdiction 3. When the whole ladder stand 2 is pushed to move, the friction force between the ladder stand 2 and the box culvert 1 and between the ladder stand 2 and the tunnel side pipe piece 3 can be reduced through the upper pulley 4, the middle pulley 8 and the lower pulley 10, so that the position of the ladder stand 2 can be easily changed by workers. Further, in order to prevent the ladder 2 from moving accidentally during construction of workers, hand brakes are arranged on the upper pulley 4, the lower pulley 10 and the middle pulley 8.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.