Powerful eddy pulse jet system for shield tunneling machine

Abstract

The invention belongs to the technical field of tunneling mechanical equipment for tunnel construction, and relates to a powerful eddy pulse jet system for a shield tunneling machine. The powerful eddy pulse jet system comprises a high-pressure water generating device and an eddy pulse generator, wherein the high-pressure water outlet end of the high-pressure water generating device is connected with the high-pressure water inlet end of a pulse jet spray head device through a high-pressure hose; the eddy pulse generator is connected with a piezoelectric ceramic transducer of the pulse jet spray head device through a pulse signal transmission cable, the lower portion of the piezoelectric ceramic transducer is fixedly connected with a spray head body assembly, the spray head body assembly isfixedly connected with a cutter head, a scraper is installed on the cutter head, an amplitude-change pole is installed at the bottom of the piezoelectric ceramic transducer, and the lower end of theamplitude-change pole extends into the spray head body assembly and extends to a nozzle. According to the powerful eddy pulse jet system, the rock crushing effect can be improved, the tunneling speedis greatly improved, the cutter head and a cutter bit of the shield tunneling machine can be automatically cleaned, and forming of mud cakes is prevented, so that the shield tunneling machine is moreefficient and perfect in a tunneling process.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction machinery and equipment, and relates to a powerful eddy current pulse jet system for a shield machine. Background technique [0002] Shield boring machine is a kind of special engineering machinery for tunnel boring. At present, underground engineering uses shield machines for tunnel construction more and more widely. The main components of the front part of the shield machine are: the cutter head is at the front, and the front shield cutting ring and soil bin are behind the cutter head. Scrapers, hobs, leading knives and other knives are installed on the cutter head, and holes are opened on the cutter head to form the slag inlet. When working, driven by the rotational force and axial propulsion of the cutter head, the hob and scraper installed on the cutter head complete the excavation and cutting of rock and soil; The rock and soil in front contact with each other to scrape it off,...

AI Technical Summary

Problems solved by technology

At present, the tunneling methods of all shield machines use hobs and scrapers installed on the cutter head to complete the excavation and cutting of rock and soil driven by the rotational force and axial propulsion of the cutter head. The design of the disk cutter and different geological conditions, the design of the cutterhead and the cutter also greatly affect the working efficiency of the shield machine. For different strata structures, different cutter arrangements are required.

It affects the excavation efficiency and easily damages the cutter head, hob and scraper

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