It is mainly used for the hoisting and transportation of mechanical equipment, tools, materials, etc. on fixed tracks. It is a flat - bed freight car with a crane and ramp, has no power, and needs to be used in conjunction with a tractor.

The crane flat car adopts an all - steel welded structure, mainly composed of  under frame, movable side walls, hydraulic tailgate, hand brake device, crane, power station, rail gripper, coupler buffer device and bogie, etc.