The steel body current collector is the main device for picking up electrical energy on the collector side in a sliding contact line system. It directly conducts electrical energy to the electrical appliance through the sliding contact between the collector brush and the guide rail, thereby achieving mobile power supply for the system. The steel body current collector consists of two parts: a mechanical tension device and a collector brush that directly slides in contact with the guide rail. Steel body current collector, receiver, power supply, conductor, sliding line manufacturer Shanghai Xuji. (Industry: sliding contact line, sliding line, sliding conductor, sliding contact mobile power transmission and supply)