Normal-pressure cutter-replacing cutter head

Abstract

The invention brings forward a normal-pressure cutter-replacing cutter head for solving the problems of cutter replacement, cutter wear and work monitoring under the condition of high hydraulic pressure in the prior art. The normal-pressure cutter-replacing cutter head comprises a large circular ring and a circular cutter head, wherein the circular cutter head is arranged in the large circular ring, the circular cutter head comprises six primary cutter beams, six secondary cutter beams, normal-pressure replacement cutters and normal-pressure replacement scrapers, the circular cutter head has a spoke casing type structure, the primary cutter beams are of a casing type, and the secondary cutter beams are of a spoke type; the normal-pressure replacement cutters and the normal-pressure replacement scrapers are arranged on the primary cutter beams, and cutter cylinders of the normal-pressure replacement cutters are embedded in the casings of the primary cutter beams; and the six primary cutter beams and the six secondary cutter beams are uniformly arranged at intervals. According to the invention, while pressure is maintained, cutters with severe wear are replaced, and the construction progress and the safety of construction personnel are guaranteed; the construction progress is improved, the construction period is shortened, and the construction cost is decreased; the wear resistance of the cutter head is enhanced, and the service life of the cutter head is prolonged; and work of the cutter head is monitored in real time, and accidental damage to the cutter head is prevented.

Description

technical field [0001] The invention relates to tunnel excavation technology, in particular to an atmospheric pressure tool changing cutterhead. Background technique [0002] As people use more and more underground space, the construction of tunnels such as urban subways and water conservancy projects is increasing. As a special machine for tunnel excavation, shield machines are gradually becoming popular due to their safety, efficiency and many other advantages. For shield tunneling under complex geological conditions such as river-crossing and sea-crossing tunnels, tool wear and abnormal damage are serious, and tool replacement is often inevitable. During the conventional pressurized tool change process, in order to ensure the stability of the face and prevent gushing, the staff have to work in a high-pressure environment, which is extremely risky and poses a great threat to health, and the tool change process takes a long time and affects the progress of the project. In ...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes an atmospheric pressure tool changing cutter head, which solves the problems of tool replacement, cutter head wear and work monitoring under high water pressure conditions in the prior art

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