Cutter disc structure for TBM (tunnel boring machine)

A cutter head and hob technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of low rock breaking efficiency, small excavation area, and large torque on disc hobs, and improve rock breaking efficiency. Efficiency, reducing wear and improving excavation efficiency

Active Publication Date: 2014-10-22
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used cutter head is a planar structure, the excavation area is small, the number of disc-shaped hobs on the cutter head is small, and the rock breaking efficiency is low, and the rock can only be cut and broken by the disc-shaped hob. Therefore, the disc-shaped The hob is subject to a large torque during this process, which is easy to wear and has a short service life

Method used

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  • Cutter disc structure for TBM (tunnel boring machine)
  • Cutter disc structure for TBM (tunnel boring machine)

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Embodiment Construction

[0015] The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

[0016] As shown in the figure, a cutterhead structure for TBM, one side of the cutterhead body 1 is fixed on the TBM body, the working surface on the other side is a spherical surface, a central mounting hole is set at the apex of the working surface, and A center hob unit 4 is arranged in the center mounting hole, and the center hob unit 4 is formed by connecting four hobs sequentially through cutter shafts. On the working surface of the cutter head body 1, the The central axis is the center of the circle, and a plurality of installation holes are evenly arranged on multiple circles with different radii, and an earth-rock discharge hole 3 for earth-rock discharge is evenly arranged between two adjacent rings of installation holes, and an earth-rock discharge hole 3 is arranged in the installation holes respectively. To break the hob 2 of t...

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Abstract

Disclosed is a cutter disc structure for a TBM (tunnel boring machine). The cutter disc structure for the TBM is characterized in that one side of a cutter disc body is fixedly arranged on a TBM body, a working face of the other side of the cutter disc body is a spherical face, a center installation hole is formed in the vertex position of the working face, a center hob set is arranged in the center installation hole, a plurality of installation holes are evenly distributed on a plurality of circumferences different in radius, which use the central axis of the cutter disc body as circle centers and are arranged on the working faces of the cutter disc body, soil and stone discharge holes used to discharge soil and stone are evenly distributed between each two circles of the installation holes, which are adjacent, and hobs used to break rock masses are respectively arranged in the installation holes. The cutter disc structure for the TBM improves the excavation area of a rock breaking cutter disc by improving the structure of the cutter disc and the arrangement mode of the hobs, increases the arrangement number of the hobs, and thereby improves rock breaking efficiency and reduces torque and thrust of the cutter disc.

Description

technical field [0001] The invention belongs to the technical field of rock breaking, and mainly relates to a cutter head structure used for TBM. Background technique [0002] TBM is a full-face hard rock tunneling machine, which can realize the processes of tunneling, support, slag discharge and other processes and operate continuously. It has the advantages of fast tunneling speed, environmental protection, and high comprehensive benefits. It can realize deep burial in complex geographical features that are difficult to achieve by traditional drilling and blasting methods. In the construction of long tunnels, under the action of thrust, the disc-shaped hob installed on the cutter head presses against the rock surface. With the rotation of the cutter head, the disc-shaped hob revolves around the central axis of the cutter head and rotates around its own axis at the same time. Under the strong thrust and torque of the cutter head, the hob rolls on the fixed concentric slit o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/11
Inventor 常家东王海霞
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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