Drilling and rolling combination cutter disc structure for TBM (tunnel boring machine)

Abstract

Disclosed is a drilling and rolling combination cutter disc structure for a TBM (tunnel boring machine). The drilling and rolling combination cutter disc structure for the TBM is characterized in that a working face of the drilling and rolling combination cutter disc structure is a spherical face which is protruded outwards, a plurality of hob sets different in radius are arranged on the working face and around the center of a cutter disc body, each hob set comprises a plurality of disc type hobs, drilling machine operation holes are formed between each two adjacent disc type hobs, a rail and a rock drilling machine which slides along the rail are arranged on one side of the cutter disc body and along the direction opposite to the TBM work direction, drill bits of the rock drilling machine can stretch out or retract through the drilling machine operation holes, soil and stone discharge holes are located between each two adjacent hob sets and used to discharge excavated soil and stone from the soil and stone discharge holes, and the other rock drilling machine is arranged at the center of the cutter disc body in the same mode. According to the drilling and rolling combination cutter disc structure for the TBM, the rock drilling machines are added on the cutter disc body, and therefore a combination of the drilling machines and the hobs is achieved, rock breaking efficiency is improved, torque of the cutter disc body and the disc type hobs is reduced, and the excavation area of a cutter disc is increased by improving the structure of the cutter disc body and optimizing the arrangement mode of the hobs.

Description

technical field [0001] The invention belongs to the technical field of rock breaking, and mainly relates to a drill-roll combined 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 fix...

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 cutter head and the disc-shaped hob. Therefore, , the disc-shaped hob is subjected to a large torque during this process, which is easy to wear and has a short service life

Images