The hydraulic pilot mechanism makes it convenient to operate. It adopts the YTO-4105turbocharged diesel engine. It adopts a hydraulic system with double pumps and double circuits, which has the function of accelerating. It is hydraulically driven, and therefore its power is strong. Its gear shifting is realized within the drivers cab. It has a strong capability to digging deep. It has the functions of digging, retracting, lifting, and gyrating, thus making it capable of composite operations. Its traveling adaptability is very outstanding.