Aerial work vehicle, as the name suggests, is a special vehicle that can transport staff and equipment to the scene and carry out aerial work. This model has a wide range of uses, such as street lights, gardens, electricity, petrochemical, communications and other industries can be used. However, there are several ways of making the big arm of the aerial work truck, there are folding arm and hydraulic lifting, and the most popular one on the market is the telescopic arm type, and there is a hybrid arm type, and finally, the newly developed truck-mounted aerial work truck. The folding arm type aerial work vehicle is also known as the curved arm type aerial work vehicle. The folding arm type lifting mechanism is folded by the multi-section box arm, which can be divided into upper folding and lower folding. The folding and unfolding of each arm are completed by the hydraulic cylinder between each section. It can complete the operation of a certain height and amplitude, and the lower fold can complete the space operation below the ground plane. This type of car is generally blue, the length of the big arm is generally about 13 meters, and the length of the big arm of the yellow card is generally about 18 to 22 meters, so the range of use is not much. Hydraulic lifting aerial work vehicle, also known as shear fork aerial work vehicle, vertical lifting lifting mechanism according to the transmission mode can be divided into hydraulic transmission and mechanical transmission, according to its structural form can be divided into cross scissors and sleeve type. Cross scissors type according to the cross arrangement, hinged into a scissor-shaped connecting rod frame structure. When changing the Angle of the connecting rod crossing, the lifting movement is achieved. The change of the cross Angle of the connecting rod can be realized by the expansion of the piston rod of the hydraulic cylinder or the retracting and retracting of the wire rope. Slee