ZWM300 HYRAULIC SUPPORT COLUMN OIL CYLINDER

The hydraulic support column cylinder is the core executing component of the hydraulic support in the coal mine comprehensive mining face, which achieves active support and pressure compensation for the roof through hydraulic drive. It adopts a nested structure of cylinder and active column, and uses emulsion pressure to form support force, adapting to changes in roof pressure during coal seam mining in real time, suppressing rock subsidence, and providing safe support space for underground operations. It is a key equipment to ensure efficient and safe mining of fully mechanized mining faces.

Function:

Dynamic support of roof: providing stable initial support force and working resistance, suppressing roof subsidence

Pressure compensation: Automatically adjust the support force according to the fluctuation of the top plate pressure to prevent overloading of the bracket

1. Cylinder diameter: 180-400 mm
2. Stroke: 1000-6000 mm
3. Rated working pressure: 35-55 MPa
4. Initial support force: 280-1200 kN
5. Maximum support force: 4000-12000 kN
6. Working medium : emulsion (concentration 3% -5%), suitable for underground hydraulic systems in coal mines