Major diameter soil-pressure balance shield machine full stratum cutter

Abstract

The invention relates to a major diameter soil-pressure balance shield machine full stratum cutter comprises a cutter flange, a landing leg structure, a cutter center, a cutter periphery, a cutter outer ring, a cutter spoke, a cutter panel, and a opening area; the main structure of the cutter adopts a high strength steel plate; the front face of the cutter is connected to a wear-resisting composite steel plate in a paving and welded mode; the two faces of the composite steel plate are made of different materials, the wear-resisting side is chromium carbide steel plate and the other side has good welding performance to ensure the quality of the paving welding, and the position that cannot pave the wear-resisting composite steel plate surfacing is bead welded with a wear-resisting layer; twosteel pipes with diameters being 25mm are laid on the surface of the front face of the cutter in the cutter diameter direction in a cross mode; hydraulic oil is filled in the steel pipes and the steel pipes are connected to a hydraulic circuit; whether the cutter is worn or not is judged by the pressure change of the hydraulic circuit; the wear-resisting property of the cutter is improved by using the major diameter soil-pressure balance shield machine full stratum cutter, and the service life is prolonged; and wear pattern of a tool and the cutter can be monitored in real time, the tool canbe replaced timely to prevent the tool form wearing, and the major diameter soil-pressure balance shield machine full stratum cutter is suitable for shield full stratum geological condition.

Description

technical field [0001] The invention relates to a large-diameter earth pressure shield machine, in particular to a large-diameter earth pressure balance shield machine excavation cutter head. Background technique [0002] The cutter head of the shield machine is the execution unit of the excavation action of the earth pressure balance shield machine. Generally, during the construction process of the shield tunneling machine, the shield machine can only advance forward and cannot retreat, and there is no condition for maintenance and replacement of the cutter head. Therefore, the service life of the cutter head is particularly critical. For long tunnel construction, it is very difficult and risky. If the cutter head fails, the consequences will be very serious; The future benefits are self-evident, and the reasonable design of the cutter head structure will affect the life of the cutter head and directly affect the tunneling efficiency of the shield machine. [0003] Shield ...

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Problems solved by technology

[0004] In order to overcome the above-mentioned shortcomings of the cutter head of the shield machine in the prior art, solve the problem of the service life of the cutter head, adapt to the excavation needs of long tunnel projects and complex strata, optimize the structural strength of the cutter head, and improve the wear resistance of the cutter head

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