A flushing system for preventing mud cake formation in the central area of ​​shield machine cutter head

Abstract

The invention discloses a flushing system for preventing mud cake formation in the central area of ​​the cutter head of a shield machine, belonging to the technical field of shield machine construction, comprising a cutter head, a central revolving body and a main beam arranged on the cutter head, including: A plurality of nozzles, the plurality of nozzles are evenly distributed on the inner side of the main beam of the cutter head, a plurality of mandrel passages are arranged in the central rotating body, the nozzles are connected with the mandrel passages, and the central rotating body is far away from One side of the sprinkler head is provided with a pipeline system, and the mandrel channel is connected to the pipeline system; the sprinkler head of the present invention is arranged on the inner side of the main beam, that is, at the beginning of the formation of the mud cake, and can be Just wash the small pieces of mud cakes, preventing the formation of large mud cakes in the central area of ​​the cutter head; secondly, the present invention has a better flushing effect on the mud cakes, which can greatly reduce water consumption and prevent The soil silo of the shield machine is flooded.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling machine construction, in particular to a water flushing system for preventing mud cake formation in the central area of ​​a cutter head of a shield tunneling machine. Background technique [0002] During the normal excavation process of the cutter head of the shield machine, a mud cake will be generated in the central area of ​​the cutter head, which will increase the resistance during excavation, so it is necessary to deal with the mud cake in the central area of ​​the cutter head. [0003] The usual practice in the prior art is to manually clean or install a high-pressure nozzle on the front shield soil bin wall of the shield machine, that is, to install a nozzle behind the mud cake, and to set a high-pressure nozzle on the soil bin wall to wash the mud cake. , due to the large area of ​​the scouring area, it is easy to cause a large amount of accumulated water in the soil bin, which wi...

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Problems solved by technology

[0004] In view of the unsatisfactory effect of flushing the mud cake area of ​​the shield machine in the prior art, the present invention provides a flushing system for preventing the mud cake in the central area of ​​the shield machine cutterhead, and its purpose is to: effectively prevent Mud cake builds up in the center area of ​​the cutter head of the shield machine, avoiding the risk of manual cleaning

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