Cutter disc structure for TBM (tunnel boring machine)

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...

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

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