An automatic telescopic anti-blocking flushing device for shield machine cutter head

Abstract

The invention relates to the technical field of shield tunneling equipment, in particular to an automatic telescopic anti-blocking flushing device for a shield machine cutter head, which includes a fixed sleeve installed on the cutter head panel, and a cylindrical anti-blocking sleeve is slidably fitted in the fixed sleeve Nozzle, on the side wall of the anti-blocking nozzle, a water nozzle is provided near its top surface; a hollow guide rod is arranged in the anti-blocking nozzle, and a limit end is provided on the front side wall of the guide rod. A compression spring is set on the outside, and an end cover is set on the outer wall of the rear end of the guide rod. The water outlet, the rear end opening is a water inlet, the water inlet is connected with a high-pressure water source, and the water outlet is connected with an anti-blocking nozzle. The invention has the advantages of simple structure, convenient control, easy integration with the main system of the shield machine, can eliminate the risk of clogging the anti-blocking nozzles of the cutter head caused by dregs when the cutter head is excavated, and improves the reliability of the cutter head flushing system.

Description

technical field [0001] The invention relates to the technical field of shield tunneling equipment, in particular to an automatic telescopic anti-blocking flushing device for a shield machine cutterhead. Background technique [0002] When the shield cutter head excavates in the viscous stratum, the fine muck particles and debris cut off will re-accumulate under the combined action of cohesive force, pressure, temperature and other factors, and will be adsorbed on the surface of the cutter head and around the cutter to form mud The cake caused a series of problems such as abnormal wear of the cutter and abnormal shield tunneling parameters, which seriously affected the construction progress of the project. [0003] In order to prevent the formation of mud cake, a series of flushing nozzles are usually installed on the shield cutterhead to flush the key areas of the cutterhead. However, the flushing nozzles used in the existing shield cutter head are exposed to the surface of ...

AI Technical Summary

Problems solved by technology

However, the flushing nozzles used in the existing shield cutter head are exposed to the surface of the cutter head without protection for a long time. With the continuous operation of the cutter head, the cut particles such as soil and rock blocks are likely to cause the plugging of the flushing nozzle and make the flushing effect failure, reduce work efficiency

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