The integrated chain compound box is a fully enclosed box structure. The diesel engine power is transferred to the drilling drawworks, rotary table, mud pump group, air compressor and energy saving generator by the chain transmission through the air-tube and mechanical clutch lifting, so as to realize the power reciprocity and distribute the power of the engine reasonably.

The truck-mounted compound box inputs the power of both engines into the back end, which has compact structure and high transmission efficiency.