The comprehensive mechanization of coal mining is the zcceleration coal industrial development of our country , raises labor productivity substantially, realizes the modern a strategic measure of coal industry. Synthesize mechanization not only output big, efficiency has low cost high and can alleviate heavy physical labor and improvement working environment, is the technology of coal industry develop direction. Hydraulic support is one of the comprehensive most important equipment in the mechanization method of coal mining.
Hydraulic support major from some following basically partial compositions: Top beam, screens beam and 4 linkage mechanisms, side fender, base, prop. Design to follow protect performance good, strength is speed high, move rapid, safely reliable etc. principle.
In the design course that the type of supports cover type, the design of canopy and caving shield and props is key. This paper has introduced requirement, type, working principle, characteristic, purpose and the structure of hydraulic support, for screening type hydraulic pressure support have made detailed analysis and introduction, have narrated use and the scheme of this kind of support.
Keywords: hydraulic support; shoring; 4 linkage mechanisms; canopy; caving shield; hydraulic legs or props; structure design.