All-formation cutter for earth pressure balance shield machine

Abstract

The invention relates to an all-formation cutter for an earth pressure balance shield machine, comprising a cutter flange, leg structures, a cutter center, a cutter periphery, a cutter outer ring, cutter spokes, a cutter panel, an opening area and the like; main structure of the cutter is made with high-strength steel plates; a wear-resistant composite steel plate is laid and welded to the front of the cuter; two sides of the wear-resistant composite steel plate are different in material, the wear-resistant side is made with a chromium carbide steel plate, the other side has good welding performance in order to ensure the quality of laying welding, and the part where a wear-resistant composite steel plate is unable to be laid is provided with a wear-resistant welded layer by surfacing; twosteel tubes 20 mm inn diameter are laid on the front surface of the cutter along the diameter direction of the cutter in crossing manner; the steel tubes are filled with hydraulic oil and connected to a hydraulic oil line; whether the cutter is abraded is judged according to changes in the pressure of the hydraulic oil line. The all-formation cutter has the advantages that wear resistance of thecutter can be improved, the service life of the cutter can be extended, abrasion of a tool and the cutter can be monitored in real time, the tool can be changed in time to prevent abrasion of the cutter, and the all-formation cutter is applicable to shielding for all-formation geological conditions.

Description

technical field [0001] The invention relates to an earth pressure shield machine, in particular to an excavation cutterhead of an earth pressure balance shield machine. 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 machine cutterheads are...

AI Technical Summary

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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