Research and Commercialization Progress of Key Technology for High Rank Hydraulic Powered Support

The paper introduced the technical development background of the high rank hydraulic powered support and provided the 3D dynamic optimized design method based on the hydraulic powered support and the surrounding rock coupling.With the comprehensive research and application of the high strength welded struct ure steel, the residual stress analysis on the support structure parts, welding robot, electric and hydraulic control system, the large cylinder diameter and impact resista nce leg and other key manufacturing technologies, the industrialized development of the high rank hydraulic powered support was put forward and finally, the paper su mmarized the research, development and industrialized implementation effect of the series high rank hydraulic powered support, including the successful research and development of ZY1700/32/70D、ZF150000/28/56 and other high rank hydraulic powered supports with a service life of 50 000 working circles.