ばら物用連続式荷役機械の動特性 : 第1報,掘削抵抗の理論的研究

概要

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It is important to realize the digging resistance in the design of excavators of continuous bulk handling equipment. Until now, resistance has been determined by analyzing the load acting on the excavator from experiments. If operating conditions change, experiments must be conducted again. The purpose of this study is to analyze the dynamic load acting on continuous bulk handling equipment and to clarify the dynamic behavior. In this paper, a theory for the digging resistance has been established using the distinct element method. In the simulation based on the theory, the handled bulk material is represented by an aggregation of grains. Deformation and fracture of the material are expressed by the movement of grains. Digging resistance is calculated as total contact force between the grain elements and moving wall elements of buckets. This theory was applied in the analysis of a case of coal digging. By comparing our analytical results with experimental ones, the validity of the theory was confirmed.
一般社団法人日本機械学会の論文
1994-10-25