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Tunnel boring machine

A technology of tunnel boring machine and propulsion cylinder, which is applied in tunnels, mining equipment, earth-moving drilling, etc., can solve the problems of slow progress, high labor cost, and outstanding safety problems.

Active Publication Date: 2021-06-25
STATE GRID XINYUAN +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of tunnel construction, many problems of inclined shafts and small-radius vertical curve tunnels will be encountered. At present, the drilling and blasting method is usually used in construction in China. This method will face serious safety problems, difficult quality control, slow progress, and high labor costs. series of questions

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The core of the present invention is to provide a tunnel boring machine, which can reduce the thrust requirement on the propulsion cylinder during turning from a horizontal tunnel to an oblique tunnel.

[0026] It should be noted that when an element is referred to as "fixing" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be ...

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Abstract

The invention discloses a tunnel boring machine. The tunnel boring machine comprises a front base body, a thrust oil cylinder and a tight supporting shield which are sequentially arranged from front to back; the thrust oil cylinder comprises an upper thrust oil cylinder body and a lower thrust oil cylinder body arranged on the lower side of the upper thrust oil cylinder body; the front base body comprises a lower telescopic shield, a cutter head and a front shield; the front end and the rear end of the thrust oil cylinder are hinged to the front shield and the tight supporting shield correspondingly; the lower telescopic shield comprises a lower telescopic oil cylinder body and a lower shield shell connected to the bottom end of the lower telescopic oil cylinder body; the upper end of the lower telescopic oil cylinder body is connected to the front shield; and under driving of the lower telescopic oil cylinder body, the lower shield shell can move downwards to the rear side of the bottom face of the front shield and can retract to the position above the bottom face of the front shield. In the state that the lower shield shell retracts to the position above the bottom face of the front shield, the front base body has the tendency of swinging relative to the horizontal plane. The front base body can generate the inclination tendency through telescopic movement of the lower telescopic shield, due to the fact that automatic swinging of the front base body can be used, the thrust requirement for the thrust oil cylinder can be lowered, and steering of the small turning radius is achieved.

Description

technical field [0001] The invention relates to the technical field of tunneling equipment, in particular to a tunnel boring machine. Background technique [0002] In the process of tunnel construction, many problems of inclined shafts and small-radius vertical curve tunnels will be encountered. At present, the drilling and blasting method is usually used in construction in China. This method will face serious safety problems, difficult quality control, slow progress, and high labor costs. series of questions. If a tunnel boring machine (TBM, Tunnel Boring Machine) is used for construction, it is necessary to solve the problem of small turning radius encountered in the process of TBM transition from a horizontal tunnel to an oblique tunnel. An oblique tunnel refers to a tunnel that is inclined relative to the horizontal plane. At present, TBM usually uses a propulsion system or an articulated cylinder to turn. To realize the upward or downward turning of the TBM, the propul...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/06E21D9/02
CPCE21D9/087E21D9/0621E21D9/02
Inventor 唐建国刘飞香童慧彭正阳苏军安巫敏任鑫朱静萍雷谷峰左程岳金文耿必君邵质中刘龙张强
Owner STATE GRID XINYUAN
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