| Hydraulic support is one of most important equipments of the comprehensive mechanization mining in the coalmine. It is key equipment on continuous mining working surface, which offer a required safety workspace for the equipments and miner on the working surface. With the extensive application of hydraulic support in coal mine of China, the higher and the more scientific requirement is advanced for the life and the reliability of hydraulic support. The damage problem of the process frame of the hydraulic support directly affects the life and reliability of hydraulic support. Furthermore, the caving hydraulic support is the one of three key equipments of the high efficiency and high output mining techniques in condition of the thick coal seam, which is only used in more than a decade. Therefore, the different kinds of endure force states during the caving hydraulic support working are analyzed and researched by means of Finite Element Method (FEM) in this thesis, which provide a theory foundation for the design and operation of hydraulic support. Following current evolution in hydraulic support research, the working principle of Stand-Pole and Cover Type Low Position Caving Hydraulic Support is introduced, which type is ZFS3600/17/28. Numerical model of pin-axis and process frame are built by ANSYS software, and the diagram of stress and strain distribution is drawn in this thesis. The correctness of FEM model is verified by compare with theory analysis result, witch indicates that the FEM is feasible. The different situation of the stress and the strain of structure can be obtained by the using of ANSYS software, which provides a useful tool for engineering structure analysis. Though the main jobs involve to the study of process frame of hydraulic support in this thesis,this analysis method also can be extended to other engineering structure, which have certain engineering purpose.
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