An early warning shield machine for tunnel engineering

Abstract

The invention provides an early warning shield machine for tunnel engineering, which includes a shield shell for temporarily supporting a newly excavated tunnel, a cutting cutterhead for advancing excavation and cutting of the tunnel, and a cutting tool for a position with greater resistance to advancement. A repair early warning mechanism for local cutting and a pressure transfer mechanism for pressure transfer to the shield shell, the cutting cutter head is installed on the front end of the shield shell, and the repair early warning mechanism is arranged on the cutting cutter head and the shield shell On the casing, it involves the field of shield machines. The tunnel project can warn the shield machine according to the existing radial force problem of the shield machine, and design a structure that can strengthen the radial force of the shield machine and a special structure that repairs and weakens the radial force, which solves the general problem The active connection between the shield machine cutter head and the shield, where the shield is under external pressure and the cutter head will produce a radial force that will damage the shield machine when the force is slightly deviated and tilted, will affect the service life of the equipment. question.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to an early warning shield machine for tunnel engineering. Background technique [0002] Tunnel construction by shield machine has the advantages of high degree of automation, manpower saving, fast construction speed, one-time hole formation, not affected by climate, ground subsidence can be controlled during excavation, impact on ground buildings can be reduced, and underwater excavation is not difficult. In the case of long tunnel lines and large buried depths, it is more economical and reasonable to use a shield machine for construction. The shell of the cylindrical component is the shield, which has no impact on the excavated unlined tunnel. The tunnel section acts as a temporary support, bears the pressure of the surrounding soil, and sometimes bears the groundwater pressure and keeps the groundwater out. The coaxiality between the cutter head of this large equipment an...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an early warning shield machine for tunnel engineering, which solves the problem of the movable connection between the cutter head and the shield of the general shield machine, in which the shield bears external pressure and the cutter head is under force. When a slight deviation occurs, a radial force that will damage the shield machine will be generated, which will affect the service life of the equipment

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