I-steel block series for the crane cable car power supply form of an electrically conductive, it consists of walking wheel, stents, plate, the flexible cable is fixed on the plate, by drawing frame synchronization with i-steel cable block, so as to realize the cable power supply.

I steel cable block is divided into the light load, heavy load and load in the model, so the block walk round three of 86, 73, 55, the carrying capacity of less than or equal to 50-150 kg of each type of press plate layer is divided into single, double, three layers, there are three forms in each category, head end for cable tractor, terminal for the fixed line frame, for I steel cable block in the middle.