Coal baseplate plough thrust control - has automatically controlled pressure adjuster in shifting ram circuit

摘要

The coal baseplate plough pressure control supplies thrust through pressure adjuster incorporates in the shifting ram system, with haulage chain run along the waste side of the face conveyor. A controller (21) coupled to the ram pressure adjuster (12) automatically adjusts the ram pressure through the adjuster depending on the load on the plough. The pressure adjuster connects to the controller by a control line and comprises reduction valves (24) allocated single or groups of shifting rams and subordinate to the controller (21). It is possible to use a central pressure adjuster.