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Replacement-facilitating tail brush and method for replacing tail brush without reinforcement in long distance

A technology of convenient replacement and shield tail brush, which is applied in underground chambers, earthwork drilling, wellbore lining, etc., can solve the problems of complex installation of new shield tail brushes, hidden safety hazards in welding, and difficult engineering, so as to avoid shield tail The risk of water gushing and sand gushing, it is not easy to seal weak points, and the effect of simple and convenient installation

Active Publication Date: 2020-09-25
URBAN MASS TRANSIT ENG CO LTD OF CHINA RAILWAY 11TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing reinforcement measures mainly include freezing the strata around the shield tail or using waterproof materials to grout the stratum at the shield tail to prevent seepage. When the ground conditions are complex, the project is more difficult, and there are even many special grounds that do not have the conditions for reinforcement
Moreover, since the shield tail brush on the existing shield machine is directly welded to the inner side of the shield shell tail, when replacing the shield machine, it is necessary to plan off all the old shield tail brushes, and then weld a new shield tail brush
Due to the relatively small space in the tunnel, it is very inconvenient to plan and replace the brushes, and there are safety hazards in welding in the tunnel. During the replacement process, the removal of the old shield tail brush and the installation of the new shield tail brush are complicated, time-consuming, laborious, and inefficient.

Method used

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  • Replacement-facilitating tail brush and method for replacing tail brush without reinforcement in long distance
  • Replacement-facilitating tail brush and method for replacing tail brush without reinforcement in long distance
  • Replacement-facilitating tail brush and method for replacing tail brush without reinforcement in long distance

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with drawings and embodiments. attached Figure 1 to Figure 14 The drawings for the embodiments are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following technical solutions shown in the drawings are specific solutions of the embodiments of the present invention, and are not intended to limit the scope of the claimed invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right" etc. are based on those shown in the accompanying drawings. Orientation...

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Abstract

The invention provides a replacement-facilitating tail brush and a method for replacing a tail brush without reinforcement in a long distance. The tail brush is an annular tail brush formed by splicing a plurality of tail brush components, wherein each tail brush component comprises at least three parallel arc-shaped tail brush mounting ring plates and a sliding rod for connecting the at least three tail brush mounting ring plates. During installation of the invention, a new tail brush is mounted on the outer ring surface of a steel structure duct piece through a spring-bolt adjustment structure for splicing together with the steel structure duct piece; then, in a tunneling process, an original tail brush is removed at first through a removal opening on the steel structure duct piece; andin the tunneling process, the new tail brush is moved to a tail brush mounting position, and then is mounted in place through a mounting opening on the steel structure duct piece. The invention realizes replacement of tail brushes in the shield tunneling process; and furthermore, in the tail brush replacement process, no ground reinforcement measure needs to be taken, so that the construction difficulty is lowered, the construction period is shortened, and the economical cost is reduced.

Description

technical field [0001] The invention belongs to the field of shield tunneling, in particular to a conveniently replaceable shield tail brush and a method for replacing the shield tail brush under long-distance non-reinforcement working conditions. Background technique [0002] With the large-scale development of domestic subway construction, the shield construction method has been widely used in the construction of underground excavation rooms in subway areas due to its safety, speed, and wide adaptability. The shield tail brush of the shield machine is located at the tail of the shield main body. It is generally formed by bending the steel wire and fluffing it. It can be in close contact with the segment and mainly prevents water, mud, etc. from flowing into the shield along the back of the segment. The sealing function is a key sealing facility to prevent sand and mud gushing at the tail of the shield. The 3 sealing brushes of the shield tail brush form 2 sealing chambers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/18
CPCE21D9/0607E21D9/0635E21D11/18
Inventor 杜殿逵张昆峰李飞鹏杨玉刘振东陈焕志党成鹏陈佳俊阮应书
Owner URBAN MASS TRANSIT ENG CO LTD OF CHINA RAILWAY 11TH BUREAU GRP
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