Cutterhead for shield tunneling of moderately-weathered argillaceous siltstone

Abstract

The invention discloses a cutterhead for shield tunneling of moderately-weathered argillaceous siltstone. The cutterhead comprises a cutterhead body, a cutterhead opening, a central heavy flat-tooth duplex hob, a cutter, edge heavy flat-tooth double-edged hobs, a front heavy flat-tooth double-edge hobbing cutter, an edge scraper, a gauge protection cutter and edge heavy flat-tooth double-edged hobs, wherein the cutterhead body is mounted on a driving device of a shield tunneling machine and in a disc shape; the cutterhead opening is formed in the cutterhead body and communicates with a soil cabin of the shield tunneling machine; the central heavy flat-tooth duplex hob is arranged on the cutterhead body; the cutter is arranged on the cutterhead body; the edge heavy flat-tooth double-edged hobs are arranged on the edge of the cutterhead body; the front heavy flat-tooth double-edge hobbing cutter is arranged on the cutterhead body; the edge scraper is arranged on the edge of the cutterhead body; the gauge protection cutter is arranged on the edge of the cutterhead body; the edge heavy flat-tooth double-edged hobs are arranged on the edge of the cutterhead body; and a cutting edge of the front heavy flat tooth double-edge hob is higher than a cutting material block of the cutter. According to the cutterhead for shield tunneling of the moderately-weathered argillaceous siltstone, the rock breaking effect in shield tunneling of moderately-weathered argillaceous siltstone is improved, and the wear resistance of the cutterhead can be enhanced.

Description

technical field [0001] The invention relates to the technical field of special cutterheads for shield machines, in particular to a cutterhead for shield tunneling in moderately weathered argillaceous siltstone. Background technique [0002] Shield machines are often used in urban subway construction applications. The main components of shield machines include shield shells, cutterheads and knives, cutterhead drives, propulsion systems, segment assembly machines, soil dumping mechanisms, post-supporting devices, electrical systems and auxiliary equipment, etc. During the tunnel construction of the shield machine, through the rotation of the cutter head, the propulsion system gives a forward thrust, so that the cutter cuts the soil in front, and the cut soil enters the excavation bin from the opening of the cutter head, and is sent out of the tunnel through the soil discharge mechanism In addition, the adaptability of the cutter head and the soil is very important in this pro...

AI Technical Summary

Problems solved by technology

During the tunnel construction of the shield machine, through the rotation of the cutter head, the propulsion system gives a forward thrust, so that the cutter cuts the soil in front, and the cut soil enters the excavation bin from the opening of the cutter head, and is sent out of the tunnel through the soil discharge mechanism In addition, the adaptability of the cutter head and the soil is very important in this process. If the cutter head is not suitable for the soil in front, it will make the tunneling of the shield machine very slow or even difficult, which will directly affect the working efficiency of the shield machine. The progress of the project and the economic benefits of the project. In the shield excavation of moderately weathered argillaceous siltstone, the current conventional cutterheads are severely worn, which reduces the working efficiency of the shield machine and the service life of the cutterheads.

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