The insulated feed crane builds on the insulated overhead crane by adding a feed cart to perform the following process steps: Adding aluminum fluoride to the electrolyser. Lifting the upper structure and body of the electrolyser tank. Aluminum recovery and measurement. Raising the anode bus. Lifting frame Other sporadic lifting operations in the electrolysis workshop are mainly used in the environment of high temperature molten salt, large current, strong magnetic field, dust and hydrogen fluoride atmosphere in the electrolysis workshop. The insulation supply valve is composed of bridge frame, trolley driving mechanism, tool trolley, aluminum tapping trolley, feeding trolley, electrical control system, air compressor and gas circuit control system, hydraulic station and oil system. loop control system.