Increase the diameter of the lifting cylinder and improve the lifting capacity without changing the lifting point of the boom of the front frame;The hydraulic system adopts double pump confluence,equipped with priority unloading valve and priority steering; Ensure the operation time of the working device while improving the lifting capacity;The transmission system adopts Weichai DEUTZ low speed energy-saving engine with low speed and large capacity torque converter, which makes the whole vehicle more energy-saving and efficient.