Numerical Simulation Study on Cutting Characteristics of Cutting Head of Roadheader
In order to solve the problem of vibration damage of key components of roadheader under working condition,numerical simulation software is used to analyse the cutting head of the roadheader,and it is found that the intrinsic frequency shows a gradual increase with the increasing of the modal state,and when the modal state is 31,the maximum deformation of the roadheader occurs in the position of the support frame,and the maximum value of the strain in this position is 1.782 2 mm.At the same time,the vibration characteristics and force characteristics of the roadheader in the drilling and traversing conditions were analysed,with the change of time,the combined external force of the cutting head in the traversing and drilling conditions showed irregular changes,and the maximum value of the combined force in the two conditions was 86 kN and 50 kN respectively,and the influence of the drilling conditions on the cutting head teeth was stronger than that of the traversing conditions,which provides certain reference for the subsequent design of the cutting head teeth.
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