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刀盘是全断面岩石掘进机上的关键核心部件.实际工程应用发现,全断面岩石掘进机作业过程中,盘形滚刀破岩作业效能低、设备振动大,与刀盘形变极不均匀关系密切.以弹性力学理论为基础,论文建立了全断面岩石掘进机作业刀盘的形变模型;考虑刀盘上盘形滚刀均匀布置,从而将作业刀盘看成面板上分布着均布载荷的弹性连续薄板;根据刀盘与其支撑大轴承的联接关系,确定刀盘支撑边界条件为夹支,从而对刀盘形变模型进行了求解.根据理论研究,论文提出了全断面岩石掘进机曲面刀盘概念——根据破岩地质条件,给刀盘以预变形,当刀盘在此地质条件下破岩作业时,刀盘产生弹性变形,从而使预变形消失,刀盘保持平面作业状态.论文建立的理论增强了刀盘作业刚度,使作业刀盘的极不均匀变形因其预变形基本能保持平面作业状态,有效提高了刀盘上盘形滚刀的破岩作业效能、降低了机器振动,从而为全断面岩石掘进机刀盘结构设计提供了借鉴.
The cutterhead is the key core part of full face rock tunnel boring machine.It has been found in actual engineering application that during the operation of full face rock tunnel boring machine, rock breaking efficiency of disc cutter is low, equipment vibration is big, Based on the theory of elastic mechanics, the dissertation establishes the deformation model of the working cutter for the full face rock tunnel boring machine, and considers the uniform arrangement of the disk cutter on the cutter so that the cutterhead can be regarded as the elasticity According to the connection relationship between the cutterhead and its large bearing, the boundary condition of the cutterhead support is determined as the pinch-off so that the cutterhead deformation model is solved.According to the theoretical research, the paper presents the concept of curved cutterhead - According to the rock breaking geological conditions, the cutterhead is pre-deformed, and when the cutterhead breaks rock during the geological conditions, the cutterhead is elastically deformed, so that the pre-deformation disappears and the cutterhead remains in the flat working state. The theory enhances the work rigidity of the cutter head so that the extremely uneven deformation of the cutter head can keep the plane work status basically due to the pre-deformation and effectively improve the rock breaking of the disc cutter on the cutter head Industry performance, reduced machine vibration, so as to provide a reference for the structural design of rock tunnel boring machine disc cutter full-face.