Expanding excavation device for replacing cutter on cutter head and cutter replacing method

Abstract

The invention discloses an expanding excavation device for replacing a cutter on a cutter head and a cutter replacing method. The expanding excavation device comprises a cutter head expanding excavation assembly and an auxiliary installation assembly, wherein the cutter head expanding excavation assembly can be assembled at a cutter assembly installation position on the cutter head; the cutter head expanding excavation assembly comprises an expanding excavation body and an expanding excavation cutter cylinder, and the expanding excavation body is installed at one end of the expanding excavation cutter cylinder; and the auxiliary installation assembly comprises a base and a driving component, the base can be fixedly installed on the cutter head, and the driving component can push out or pull back the expanding excavation cutter cylinder. According to the expanding excavation device, firstly, the cutter assembly is replaced with the cutter head expanding excavation assembly, expanding excavation of the cutter head expanding excavation assembly is used for expanding excavation of a rock surface to meet n installation size requirement of a new cutter assembly, use is convenient, through arrangement of the auxiliary installation assembly, it is guaranteed that a moving direction of the cutter head expanding excavation assembly is accurate, the driving force of the driving part is used, assembly of the cutter head expanding excavation assembly is finished, the device is convenient to operate, high in precision, capable of achieving automatic operation, capable of avoiding manualwarehouse entering treatment and high in safety.

Description

technical field [0001] The invention relates to the technical field of tunnel boring machine engineering, in particular to an excavation device and a tool replacement method for tool replacement on a cutter head. Background technique [0002] With the continuous development of urbanization in our country and the in-depth advancement of infrastructure construction, the construction of tunnels across rivers and seas has increased significantly. The construction of such engineering tunnels generally has the characteristics of long distances and high water pressure, and the risk of personnel entering the warehouse to change tools is high. Therefore Shield excavation with normal pressure tool change function is usually used. [0003] A large number of tool changes are unavoidable during long-distance excavation. When crossing hard rock formations, once the tool wears out, the tool may not be able to be installed in place due to the intrusion of the rock surface when replacing the...

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Problems solved by technology

[0004] However, the existing excavation device or super digging tool usually has a large structure, and a sealing structure needs to be installed in the expansion device for tool replacement on the cutter head, resulting in the installation of the expansion device occupying the installation space of the edge cutter, which affects Tool layout; and the main drive telescopic swing device, although it can provide space for tool change, can meet the demand, but its system structure is complicated, the manufacturing precision is high, and the control system is complicated, which leads to a significant increase in equipment cost, and it is difficult to repair when a fault occurs. Low

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