The manual single track car can be hung on the regular I-steel in various types of small- scale cranes or the installation, Mix and form the intact hoisting machinery with the chain block. The warehouse expected much to working efficiency, the workshop and hydropower station, but as installation, overhaul the equipment or hangs and transports the using of the heavy object. Get up weight from 0.5-10 SDX-3 manual single track car, two to mainly driven wheel draw board in Left deviation, two of right separately, Two draw board equip with crossbeam use simultaneously bolted joint, crossbeam rings are hung, Sprocket install in gear wheel one end of axle, urge sprocket gear wheel axle cause on one's own initiative the wheel is rotated, The car can make coming and go to move along the I-steel .