External injection hydraulic acrow props can have better protection requirements.
Single hydraulic support: it is mainly composed of movable column, top cover, three-way valve, return spring, oil cylinder, handle body, piston, base body, etc.
It is suitable for inclined angle beam or smaller in 35 coal seam working face. For the coal mining face with rock burst, the adjustable props can replace the three-way valve with large flow to meet the support requirements.
Emulsion pump station should be equipped for external injection acrow prop fluid. According to the situation of coal mine, a suitable flow pressure should be selected to lift the acrow prop. However, the roller should be cleaned regularly, and the wearing parts should be inspected. If the worn parts are replaced in time, it is necessary to clean the roller regularly
