Mechanisms and Virtual Design of a New Type of Top-Coal Caving Hydraulic Support

摘要

A new type of top-coal caving hydraulic support and its characteristic are discussed in this paper. The multi-freedom mechanism of the support is simplified as a planar mechanism to get a direct analytic solution. The kinematic analysis of the support are made to present the equations which indicate the parametric relationship of geometry and motion of the components. The key formula deduced here can be used not only to virtual reality but also to practical application of the hydraulic supports. In order that the top beam of support can move horizontally, which makes the support work perfectly and effectively, the front and back legs must move at certain velocity coordinately. With the method of virtual design, the errors and faults are fined easily, many improvements are made in time, which makes the new hydraulic support developed successfully.