The coal mining of comprehensive mechanization is the way that must be taken to increase significantly coal output and enhance the economic efficiency. In order to meet the needs which grows day by day to the coal, we must largely produce comprehensive mechanization mining coal equipment, rapidly increase the comprehensive mechanization mining coal working surface. Sheild hydraulic support that designed in this paper has the characteristic of integrity well, support safe, adaptability strong, volume small, the weight light, the cost low, the transportation –installment-disassembly and the use quite convenient. Its caving shields are hinge-jointed to the canopy and the base making the shield a kinematically stable support, a major advantage over the frames and the chocks. It also completely seals off the gob and prevents rock debris from getting into the face side of the support. Thus the shield-supported face is generally clean.
The paper discusses optimal synthesis of a four-bar mechanism. The general optimization problem is addressed in the form of a nonlinear programming problem. The objective of this approach is to determine the optimal values of the mechanism link lengths, to minimize the difference between the trajectory T of the arbitrary point C on the mechanism coupler link and the prescribed trajectory P, while hinge forces have to remain within the prescribed values.
In ZY3000-hydraulic support the design process, focusing on the top beam and column base and the analysis and design Meanwhile hydraulic supports the right hydraulic system was introduced.
Key words : hydraulic support ;our-bar mechanism ; shield structural design;strength analysis