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Auxiliary tight supporting and pushing mechanism and tunnel boring machine

A technology of tunnel boring machine and propulsion mechanism, which is applied in tunnels, mining equipment, earthwork drilling and mining, etc., and can solve problems such as failure of normal tunneling and failure to provide sufficient support and reaction force

Active Publication Date: 2021-10-01
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When encountering broken surrounding rocks such as faults, the support shoe of the hard rock TBM cannot provide enough support and reaction force, so it cannot be excavated normally

Method used

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  • Auxiliary tight supporting and pushing mechanism and tunnel boring machine
  • Auxiliary tight supporting and pushing mechanism and tunnel boring machine

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Embodiment Construction

[0028] The core of the present invention is to provide an auxiliary braced propulsion mechanism and a tunnel boring machine. The tunnel boring machine can be assisted by the supporting reaction force of the auxiliary braced propulsion system to meet the requirements of normal tunneling in the process of tunneling in weak surrounding rocks.

[0029] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Please refer to figure 1 with figure 2 , The present invention provides an auxiliary stretching propulsion mechanism, which includes an auxiliary propulsion cylinder 1 , a telescopic fixed support assembly, an auxiliary stretching cylinder 3 , an auxiliary stretcher shoe 4 and a base 6 of the auxiliary stretching mechanism. in,

[0031] Auxiliary propulsion cylinder...

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Abstract

The invention provides an auxiliary tight supporting and pushing mechanism and a tunnel boring machine. An auxiliary pushing oil cylinder is connected with a main machine and auxiliary supporting shoes, and a base of an auxiliary tight supporting mechanism makes contact with a tunnel. A telescopic fixed supporting assembly is arranged on a base of the auxiliary tight supporting mechanism, the two ends of the telescopic fixed supporting assembly are connected with the auxiliary supporting shoes at the two sides of the telescopic fixed supporting assembly respectively, and the stroke requirement of an auxiliary tight supporting oil cylinder is met. The two ends of the auxiliary tight supporting oil cylinder are connected with auxiliary supporting shoes at the two sides of the auxiliary tight supporting oil cylinder respectively so as to provide tight supporting force needed by tunneling. By adjusting the stroke of the auxiliary pushing oil cylinder, the auxiliary tight supporting and pushing mechanism slides in the tunnel until the geological working condition required by the auxiliary supporting shoes to tightly support the tunnel wall is met, the auxiliary tight supporting oil cylinder stretches out, the auxiliary supporting shoes achieve and keep certain supporting pressure after tightly supporting the tunnel wall, oil enters from the rodless cavity side of the auxiliary pushing oil cylinder, the pushing oil cylinder stretches out, the TBM starts tunneling until a tunneling stroke is reached, and then tunneling is stopped. Therefore, the TBM can assist in pushing by means of the supporting reaction force of an auxiliary tight supporting and pushing system, and normal tunneling in weak surrounding rock is met.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction machinery, and in particular relates to an auxiliary tensioning propulsion mechanism and a tunnel boring machine. Background technique [0002] At present, hard rock TBM (Tunnel Boring Machine, full-face hard rock tunnel boring machine) is relatively mature in rock tunnel construction, and is widely used in large-scale tunnel projects such as urban subways and water diversion. Good rock formations. When encountering broken surrounding rocks such as faults, the support shoe of the hard rock TBM cannot provide enough support and reaction force, so it cannot be excavated normally. [0003] Therefore, how to solve the normal tunneling problem of the tunnel boring machine in the tunneling process of weak surrounding rock is a technical problem urgently to be solved by those skilled in the art. Contents of the invention [0004] The purpose of the present invention is to provide an auxil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10E21D9/11
CPCE21D9/1093E21D9/11
Inventor 陶磊李永安闫志蕊王浩然耿毅德王宏伟
Owner TAIYUAN UNIV OF TECH
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