Abrasion monitoring and cleaning device for cutter head of shield tunneling machine

Abstract

The invention discloses an abrasion monitoring and cleaning device for a cutter head of a shield tunneling machine, and belongs to the technical field of shield tunneling machines. The abrasion monitoring and cleaning device is characterized in that a new cutter head provided with n sets of blind hole air cavities is fixedly mounted in a cutter head hole in a new cutter disc, wherein n is a positive integer; upper and lower high-pressure water inlets in the new cutter disc pass through upper and lower piston cavities and then communicate with upper and lower high-pressure water spraying openings; and one end of an upper piston embedded in the upper piston cavity and one end of a lower piston embedded in the lower piston cavity abut against an upper spring and a lower spring, and the otherends of the upper piston and the lower piston abut against the end faces of the upper water inlet and the lower water inlet. The abrasion monitoring and cleaning device has the advantages that high-pressure water columns sprayed by the upper and lower high-pressure water spraying openings can clean the new cutter head, forming of a mud cake is avoided, and the service life of the cutter head is prolonged; after the new cutter head is cleaned by high-pressure water, by inflating the blind hole air cavities, whether air leaks or not can be observed, and the abrasion situation of the new cutter head is judged through the number of air leaking holes are observed; and the abrasion monitoring and cleaning device is simple in structure, the cutter head abrasion degree is monitored in real time, and the tunneling efficiency of the shield tunneling machine is improved.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a device for monitoring and cleaning cutter head wear of a shield machine. Background technique [0002] At present, the manufacturing technology of shield machines is constantly developing, and they are mostly used in tunnel excavation projects. Such as figure 1 As shown, n sets of cutter heads 2 will be installed on the cutter head 1 of the shield machine, and n is a positive integer. During the tunneling process of the shield machine in hard rock or composite stratum, the wear of the cutter head on the cutter head is the most serious. During the underground excavation process of the shield machine, the left end surface of the cutter head 1 was completely covered by muck, and the worn cutter head 2 could not be found and replaced in time, which seriously affected the excavation project of the shield machine. When the shield machine excavates for a long ti...

AI Technical Summary

Problems solved by technology

During the underground excavation process of the shield machine, the left end surface of the cutter head 1 was completely covered by muck, and the worn cutter head 2 could not be found and replaced in time, which seriously affected the excavation project of the shield machine

When the shield machine excavates for a long time, the muddy muck in the excavation cabin will be deposited on the surface of the cutter head 2 under extrusion and form a mud cake. The increased friction will cause the temperature of the cutter head 2 to rise sharply, and the cutter head 2 will appear brittle. break phenomenon, seriously affecting the normal operation of the shield machine

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