| Tanks rescue tractor mostly used in rescuing and draging tanks which are fallen in salt or at fault or battle damage in wartime and training. In addition, it can rush to repair in field operations and earth work. It is the important support equipment of armored vehicle .The author regards the medium-84-tanks as research object and explores the application mode of virtual prototyping technology which is used in research of military support equipment product. Then design solutions based on the theory of rigid-flexible coupling is put forward. Geometric model data in dynamic analysis software ADAMS is transferred based on 3D software Pro/E and finite element software ANSYS. Therefore, this paper solves the problem of the validity for data transfer. And the rigid-flexible coupling virtual prototype model of slinging machinery operation unit is the established.Considering the actual situation, dangerous section of the boom is determined by dynamics simulation analysis of slinging machinery operation unit in the repair shop and field. Thinking on a reverse way, the lifting table of medium-sized tanks rescue tractor is obtained. The necessity of operating strictly according to the operating rules is explained by analyzing the boom with rotary belt in load.The simulation result of using tanks rescue tractor can be use as technical guidance and provided to grass roots troops. Also the technology supports the "based on existing weapons and equipment to innovating technical" powerfully. At the same time, reference is provided for researching next generation of the tanks rescue tractor. It is beneficial to shorten the product development period, reduce development cost and enhance battle effectiveness.
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