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A tunnel boring machine and its support shoe device

A technology for tunnel boring machines and tunnels, which is applied in tunnels, mining equipment, earthwork drilling and mining, etc. It can solve the problems of weak and broken surrounding rock areas that cannot be effectively supported, and the support area is fixed, so as to improve the passing rate and increase the support. Top area, effect of reducing reaction force

Active Publication Date: 2022-08-02
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a support shoe device for tunnel boring machines to solve the problem in the prior art that the roof support area of ​​the roof tunnel must cause the support shoes normally used in the hard rock area to be unable to effectively support the weak and broken surrounding rock area. technical problem
At the same time, the present invention also provides a tunnel boring machine using the above-mentioned support shoe device to solve the technical problem in the prior art that the support area is fixed and the weak and broken surrounding rock area cannot be effectively supported to provide effective support reaction force.

Method used

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  • A tunnel boring machine and its support shoe device
  • A tunnel boring machine and its support shoe device
  • A tunnel boring machine and its support shoe device

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Experimental program
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Effect test

specific Embodiment 1

[0053] like figure 1 , figure 2 and image 3 As shown, the tunnel boring machine in this embodiment is an open-type TBM, and the TBM includes a main beam 1 . The front end of the main beam 1 is provided with a main drive, which is used to drive the cutter head to rotate and excavate the tunnel 8 . The structures of the main beam 1 , the main drive and the cutter head are the same as the corresponding structures of the main beam 1 , the main drive and the cutter head of the TBM in the prior art, and will not be repeated here.

[0054] A walking track is arranged on the main beam 1, the walking track extends along the extension direction of the main beam 1, and a support shoe device is installed on the main beam 1. The support shoe device here is a horizontal floating support shoe structure, and the support shoe device specifically includes a saddle Frame 2, the saddle frame 2 is movably assembled on the walking track of the main beam 1, the saddle frame 2 is provided with ma...

specific Embodiment 2

[0066] The main difference between it and Embodiment 1 is that in Embodiment 1, each side of the main support shoe is only hinged at the lower end of the auxiliary support shoe. In this embodiment, since the upper side space of the main bracer shoe is also unused, the auxiliary bracer shoe can be hinged at the upper end of the main bracer shoe, and at this time, the auxiliary bracer shoe cylinder is arranged on the upper side.

[0067] Of course, in other embodiments, the upper auxiliary support shoe may be hingedly connected to the upper end of each side main support shoe, and the lower auxiliary support shoe may be hinged to the lower end of each side main support shoe, and corresponding to each auxiliary support shoe may be provided separately Auxiliary shoe cylinder to drive auxiliary shoe swing.

specific Embodiment 3

[0069] The main difference from Embodiment 1 is that in Embodiment 1, the auxiliary support shoe is hingedly assembled with the main support shoe. In this embodiment, referring to the X-shaped support shoe structure, an auxiliary support shoe oil cylinder is fixed on the saddle frame, and the auxiliary support shoe oil cylinder expands and contracts along the radial direction of the tunnel. At this time, the auxiliary support shoe can be completely driven by the auxiliary support shoe oil cylinder Extending and directing along the radial direction of the tunnel, at this time, there is no direct connection between the auxiliary support shoe and the main support shoe, and both are installed on the saddle. When passing through the weak and broken surrounding rock area, the auxiliary support shoe cylinder drives the auxiliary support shoe to extend straight to support the tunnel. The boots can be retracted.

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Abstract

The invention relates to a tunnel boring machine and a support shoe device. The support shoe device comprises a saddle frame, a main support shoe oil cylinder and a main support shoe are arranged on the saddle frame, and an auxiliary support shoe oil cylinder and an auxiliary support shoe are also arranged. The support area is smaller than that of the main support shoe, the auxiliary support shoes and the main support shoes are aligned in the tunnel extension direction, and the auxiliary support shoes and the main support shoes are staggered in the tunnel circumferential direction. When passing through hard rock areas, the tunnel can only be supported by the main support shoes. When passing through weak and broken surrounding rock areas, only relying on the main support shoes cannot provide sufficient support and reaction force, and the auxiliary support shoe cylinder drives the auxiliary support shoes to move to support At the top position, the auxiliary support shoe and the main support shoe support the tunnel together, which can increase the support area of ​​the support shoe device, reduce the reaction force on the tunnel per unit area, and effectively support the weak and broken surrounding rock. When the support shoe device is applied to a tunnel boring machine, the passing rate of the tunnel boring machine in the weak and broken surrounding rock can be effectively improved.

Description

technical field [0001] The invention relates to a tunnel boring machine and a support shoe device thereof. Background technique [0002] The tunnel boring machine is used for tunnel construction. When the boring machine is working, it needs to rely on the support shoe on the support shoe device to support the tunnel wall to provide support and reaction force for the excavation of the cutter head at the front end of the main beam. [0003] At present, there are many types of support shoes for roadheaders, including horizontal floating, vertical floating and X-shaped. The horizontal floating structure includes two support shoes arranged symmetrically on the left and right, such as the left support shoe and the right support shoe disclosed in the patent document with the authorization publication number CN204532358U. The vertical floating structure includes upper and lower support shoes located on the upper and lower sides of the main beam, such as the upper and lower support ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10
CPCE21D9/1093
Inventor 崔明明张啸张喜冬王恩光僧雄飞张挺宇席杰
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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