Shield tunneling machine cutter with cushion device

Abstract

The invention discloses a shield tunneling machine cutter with a cushion device. The shield tunneling machine cutter comprises a cutter seat fixed on a spoke of a shield tunneling machine cutter disc,and the cutter body installed on the cutter disc, the cutter is provided with a cutter blade, the side edge, close to the heading direction of the cutter, ofthe cutter blade of the cutter is rotatably connected with the cutter seat, the other side edge, the cutter blade away from the heading direction of the cutter, of the cutter and the cutter seat are provided with a gap, and a cushion device is arranged between the other side edge of the cutter and the cutter seat. According to the shield tunneling machine cutter, the cushion device is arranged in the cutter seat, after the blade of the cutter is impacted during working, the cutter can be driven to be rotated around a pin roll, a cushion spring in the cushion device is compressed, time of cutting a hard object by the blade is prolongedin the process, the cushion effect is exerted, the probability of tipping of the blade is reduced, the capability of impact resistance of the cutter is greatly promoted, and the problem that due to the damage of the cutter disc caused by the tipping of a cutter tool, excavation of a shield tunneling machine is affected is solved.

Description

technical field [0001] The invention belongs to the technical field of shield machine equipment for tunnel excavation, and in particular relates to a shield machine cutter with a buffer device. Background technique [0002] When excavating tunnels with the cutter head of the shield machine, it is often encountered that the geology is uneven or the soil layer contains hard cores such as stones. When the cutter excavates in this stratum, it will be impacted to varying degrees. The cutting and scraping principle is used to excavate the soil, and there is sliding friction between the blade and the soil, which requires the blade to be able to keep the blade sharp and have good wear resistance, so the blade of the cutter is usually made of hard alloy. The advantage of cemented carbide is that it has high hardness and good wear resistance. The disadvantage is that it is afraid of being impacted. After being impacted, it is prone to chipping or even breaking, making the tool lose th...

AI Technical Summary

Problems solved by technology

This method will make the cutter big and heavy, and the cost will increase a lot, and the arrangement of this kind of cutter in the limited space of the central area of ​​the cutter head will reduce the opening of the central area, affect the flow of muck, and easily form mud cakes ( Mud cake is also a major problem affecting the cutting effect of the cutter head)

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