CN217558237U

CN217558237U - Special measuring ladder stand for shield tunnel

Info

Publication number: CN217558237U
Application number: CN202221331362.5U
Authority: CN
Inventors: 徐树军; 周昆; 李延秋; 刘继刚; 孟德锋; 耿方升; 邵官进; 徐兆凯; 赵凯
Original assignee: China Railway 14th Bureau Group Shield Engineering Co Ltd
Current assignee: China Railway 14th Bureau Group Shield Engineering Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-11
Anticipated expiration: 2032-05-31

Abstract

The to-be-solved technical problem of the utility model is to provide a special measuring cat ladder for shield tunnel, the body type is small, the occupied space is small, the labor input is small, the road passage is not influenced, and the repeated erection is avoided, the special measuring cat ladder comprises a cat ladder body, a supporting base is arranged at the bottom of the cat ladder body, a carrying platform is arranged at the top of the cat ladder body, and the carrying platform is arranged at the top of the laid pipeline on the inner wall of the tunnel; the supporting base comprises angle iron pieces and supporting columns, the angle iron pieces are embedded on the top corners of the side walls of the box culvert, and the lower ends of the supporting columns are supported on the top surfaces of the bracket of the box culvert.

Description

Special measuring ladder stand for shield tunnel

Technical Field

The utility model relates to a shield constructs the construction field, concretely relates to special measurement cat ladder of shield tunnel.

Background

In the major diameter shield tunnel work progress, box culvert both sides carriageway board adopts cast-in-place construction in the middle of the shield tunnel, because of only having laid middle box culvert in earlier stage, the shield constructs and need measure the wire, need put some during synchronous construction, as shown in figure 1, measure and put the point position on the shield tunnel inside wall, should measure and put the point position apart from the box culvert top surface far away.

In order to facilitate workers to climb to a measuring and placing position to measure and place, a scaffold is erected in the past, and shield guiding measurement and synchronous construction and placing are carried out. However, the following problems mainly exist in the scaffold:

(1) The scaffold needs special workers for erecting, high-altitude operation exists in the erecting process, and the safety risk is high;

(2) The erection is complicated, the erection time is long, the manual investment is large, and the up-and-down walking is inconvenient after the erection is finished;

(3) The scaffold is large in occupied space and inconvenient for workers to carry out other operations;

(4) When later stage anticollision wall is under construction, need place the guidance tape with mud pipe and aqueous vapor pipe on the guidance tape, need dismantle the scaffold frame and build again, hinder the construction process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a special measurement cat ladder of shield tunnel, the size is little to occupy space, and artifical input is little, does not influence the road current, avoids setting up repeatedly.

The utility model discloses a realize through following technical scheme:

a special measuring ladder stand for a shield tunnel comprises a ladder stand body, wherein a support base is arranged at the bottom of the ladder stand body, a carrying platform is arranged at the top of the ladder stand body, and the carrying platform is arranged at the top of a pipeline laid on the inner wall of the tunnel;

the supporting base comprises angle iron pieces and supporting columns, the angle iron pieces are embedded on the top corners of the side walls of the box culvert, and the lower ends of the supporting columns are supported on the top surfaces of the bracket of the box culvert.

Furthermore, an arc-shaped concave plate capable of being lapped on the pipeline is arranged on the bottom side of the carrying platform.

Furthermore, the support column is an adjustable support column.

Furthermore, the left side and the right side of the carrying platform of the ladder stand body are respectively provided with a guardrail.

Further, the cat ladder body is formed by controlling two square steel supports and a plurality of cat ladder footboard concatenation.

Compared with the prior art, the utility model the beneficial effect who gains as follows:

1. the utility model has simple manufacture, the lower end of the ladder stand body is firmly positioned on the edge of the box culvert through the supporting base, the upper end of the ladder stand body is erected on the top of the pipeline paved on the inner wall of the tunnel through the carrying platform, the whole occupied space is small, and other construction progress is not influenced;

the supporting base comprises angle iron pieces and supporting columns, the angle iron pieces are embedded on the top corners of the side walls of the box culvert, and the lower ends of the supporting columns abut against the top surfaces of the brackets of the box culvert, so that the bottom is firmly supported and the excessive space is not occupied;

because the utility model has small size, other constructions are not affected, the previous projects of repeated disassembly and assembly are avoided, and the construction progress is greatly improved;

2. the arc-shaped concave plate arranged at the bottom side of the carrying platform is arranged on the pipeline, so that the stability is improved, and the safety is greatly improved;

3. the utility model discloses simple structure, low in manufacturing cost, convenient to use is nimble, and it is convenient to remove.

Drawings

FIG. 1 is a schematic diagram of a measurement placement location in the prior art;

FIG. 2 is a schematic structural view of the measuring ladder stand special for the shield tunnel of the present invention;

fig. 3 is a schematic view of the special measuring ladder stand for the shield tunnel in the shield tunnel of the present invention;

FIG. 4 is an enlarged view of the structure A in FIG. 3;

FIG. 5 is an enlarged view of the structure B in FIG. 3;

in the figure: 1. the ladder stand comprises a ladder stand body, 2, guardrails, 3, a supporting base, 31, an angle iron piece, 32, supporting columns, 4, a carrying platform and 5, an arc-shaped concave plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

The embodiment discloses a special measurement cat ladder for a shield tunnel, which comprises a cat ladder body 1, a support base 3 and a carrying platform 4 as shown in figures 2-5, wherein the cat ladder body 1 is a linear cat ladder and is formed by welding a left square steel support and a right square steel support and a plurality of cat ladder pedals. In order to ensure the operation safety of personnel, guardrails 2 with the height of 0.8m are welded on the left side and the right side of the ladder stand body 1. A carrying platform 4 is welded on the top of the ladder body 1, and the platform with the size specification of 0.8m1.5m is built on and used for measuring and placing points. The bottom side of the carrying platform 4 is provided with an arc-shaped concave plate 5, so that the arc-shaped concave plate is conveniently arranged on the bottom surface of the platform and is arranged at the top of a pipeline paved on the inner side wall of the shield tunnel.

3 welding of support base in the local bottom of cat ladder, support base 3 include angle iron 31 and support column 32, angle iron 31 inlays the dress and fixes a position on box culvert side wall apex angle, and the lower extreme of support column 32 supports the top surface at the box culvert bracket and bears gravity. In this embodiment, in order to adjust the height of the supporting columns 32 to press against the bracket of the box culvert, the supporting columns 32 are adjustable supporting columns 32.

Shield tunnel special use measures cat ladder processing, installation and use as follows:

according to the size of the pipeline (mainly be mud pipe or aqueous vapor pipe) that the shield tunnel inside wall had been laid to middle box culvert, adopt square steel and cat ladder footboard to weld the cat ladder body, then install respectively with supporting pedestal and carry on the platform, with whole ground pre-assembly, the reuse is carried to the assigned position along with the car crane, carry on the platform and carry on the pipeline top of having laid at the tunnel inner wall, angle bar spare inlays the dress on box culvert side wall apex angle, the lower extreme of support column supports the top surface at the box culvert bracket.

The utility model discloses simple manufacture, the lower extreme of cat ladder body passes through the very firm location of support base on the box culvert edge, and the upper end of cat ladder body is set up on the pipeline top that the tunnel inner wall has been laid through the lift-launch platform, and whole occupation space is little, does not influence other construction progress, has avoided the engineering that repeated dismouting was set up in the past, improves the construction progress greatly.

Claims

1. The special measuring ladder stand for the shield tunnel is characterized by comprising a ladder stand body, wherein a supporting base is arranged at the bottom of the ladder stand body, a carrying platform is arranged at the top of the ladder stand body, and the carrying platform is arranged at the top of a pipeline laid on the inner wall of the tunnel;

the supporting pedestal comprises angle iron pieces and supporting columns, the angle iron pieces are embedded on the top corners of the side walls of the box culvert, and the lower ends of the supporting columns support the top surfaces of the bracket of the box culvert.

2. The special measuring ladder stand for the shield tunnel according to claim 1, wherein an arc-shaped concave plate capable of being lapped on a pipeline is arranged on the bottom side of the carrying platform.

3. The special measuring ladder stand for the shield tunnel according to claim 1, wherein the support column is an adjustable support column.

4. The special measuring ladder stand for the shield tunnel according to claim 1, wherein guardrails are respectively arranged on the left side and the right side of the carrying platform of the ladder stand body.

5. The special measuring ladder stand for the shield tunnel according to any one of claims 1 to 4, wherein the ladder stand body is formed by splicing a left square steel support, a right square steel support and a plurality of ladder stand pedals.