A wear compensation device for a shield sealing system

Abstract

The present application relates to the technical field of shield sealing, and specifically discloses a wear compensation device of a shield sealing system, which comprises a sealing cover base body, a mounting groove is formed in one side of the sealing cover base body, a whole-circle seal is split into multiple groups of independent sealing segments, each segment corresponds to a set of power execution components, a thin-film pressure sensor collects the pressing load of the back of a single segment in real time, when the wear of a sealing lip at a certain position causes the pressing force to decrease, only the corresponding partition power mechanism drives the push plate to feed for compensation, the sealing segments at other positions remain in the original installation position and do not displace, the original spring elastic force is no longer used to continuously press the seal, the spring is avoided from being broken due to long-term erosion by mud and water, and the mud and sand are avoided from being silted and jammed to cause failure, meanwhile, the hydraulic oil circuit is cancelled throughout the whole process, the oil pipe and the related supporting components of hydraulic oil are saved, and the disadvantages that the compensation function is disabled due to the collision of the pipeline by the spoil in the tunneling environment, the immersion of the pipeline by the mud and water, and the leakage of the oil are completely avoided.

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