The retractable belt conveyor is a self-propelled machine of continuous action, mounted on wheels and moving along the rail-track. As a rule, the retractable conveyor is used in conjunction with belt conveyors to distribute the discharged material into the cells of the bunker.
The principle of operation of the retractable conveyors is shown in the scheme.
The frame of the retractable conveyor moves forward and backward over the bunkers along the rail-track. The unloaded material is continuously dumped from the belt to the retractable conveyor, which is controlled by the operator remotely or automatically. The cargo on the retractable conveyor can move both forward and backward. At the signal of the operator or automatically the conveyor moves along the bunkers, dumping the cargo into the receiving hatches and, with the sequential loading of the bunkers, moves further after filling the bunker.
under operating conditions:
in the direction of the belt:
by the response of the work:
Retractable conveyors are designed to load material in a fixed position of the conveyor. Shuttle conveyors operate automatically in continuous reciprocating motion.