Automatic cleaning device for a shield machine cutter

By installing inclined water pipe channels and a Venturi water-air mixing structure on the tunnel boring machine (TBM), combined with a gas pressing pipe and a rotating spring, automatic cleaning of the TBM cutter head is achieved. This solves the problem of untimely cutter head cleaning in existing technologies, improves the cleaning effect and equipment lifespan, and reduces energy consumption.

CN122589418APending Publication Date: 2026-08-18ANHUI TONGDU FLOW TECH
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Patent Information

Application Number
CN202610947679.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-29
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing technology cannot clean mud, rock debris and gravel from the cutter head in real time during normal tunneling, which leads to increased resistance to cutter head rotation, accelerated wear, and affects tunneling efficiency and equipment life.

Method used

Design an automatic cleaning device for tunnel boring machine cutterheads. By setting inclined water pipe channels and Venturi water-air mixing structures on the main body of the tunnel boring machine, automatic flushing is achieved by utilizing the rotational power of the cutterhead. Combined with a gas pressing pipe and a rotating spring structure, cleaning and tunneling can be carried out simultaneously.

Benefits of technology

It enables real-time cleaning of the cutter head during tunnel boring machine excavation, preventing mud cake formation, improving cleaning efficiency and equipment lifespan, reducing energy consumption, and ensuring the stability and efficiency of tunneling.

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Abstract

The application discloses a kind of automatic cleaning device for shield machine cutter, it is related to tunneling equipment technical field, including including shield machine main body and cutter head body, the cutter head body is arranged on the surface of shield machine main body, the side annular array of shield machine main body is close to cutter head body and is provided with several water pipe grooves, the inside of water pipe groove is all fixedly connected with water outlet cavity, the inside of shield machine main body is located on the side of water outlet cavity away from cutter head body and is provided with annular water storage chamber, the annular water storage chamber is used to store water.The application can flush cutter and cutter head in real time when shield machine is normally tunneling, just remove in time when sundries is just attached, block mud cake formation and muck jam from source, continuously keep the surface of cutter clean, avoid cutter jam and eccentric wear problem from root.
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