Folding arm lift is a 360 ° rotating lift off people or goods of hydraulic lifting tool. Folding arm lift with mobile convenience, simple operation, a large work surface, a good balance of performance characteristics, in the case of uneven road surface, which can simultaneously support four legs, one leg support can also facilitate operational use, which are widely used in the station , docks, public buildings and other needs in high-altitude operations industries and fields. 1 Purpose Editing folding arm aerial vehicles are widely used in municipal, electricity, street lighting, advertising, communications, photography, gardening, cross folding arm aerial vehicles [1] through, docks, airports, ports, large industrial and mining and other industries to install maintenance and climbing operation. For the wild variety of rugged terrain, a wide range of space operations, mainly used in construction, bridge construction, shipbuilding and construction, airports, mines, ports, telecommunications and power facilities and outdoor advertising engineering machinery and equipment. Diesel folding arm lift: no external power supply, erection suitable for field work at height, walking and diesel powered lift, big power, walking speed. Trailer folding arm lift: can be hung on the car, synchronized with the car, suitable for field-altitude operations. Lift: 1, 2 with 380-220V power supply, power supply is not convenient, you can use the battery-driven lift. Good looks, easy to walk. Car folding arm lift: the Boom Lift installed in the car, the use of power-driven car lift. Field far away for high altitude operations. 2 Features (1) new self-propelled hydraulic special chassis. Developed with independent intellectual property rights of self-propelled aerial work platform trucks, using a hydraulic integration, reliability, design and computer-aided design technology, successfully developed a full hydraulic drive, self-propelled special chassis, breaking the previous domestic aerial work platform lift trucks or cranes can only adopt restrictions on vehicle chassis modified design. (2) with load driving, good job stability. Chassis structure breaks the traditional design theory and methods, on the train platform by optimizing the overall layout and load distribution, reducing the center of gravity shifted. The unique wide-angle hinge point backwards type structure, a reasonable set of multiple counterweight module, effectively balance work torque. Using H-type variable cross cut of composite box beam frame and high load solid rubber tires, increasing the overall stiffness of the chassis, ensure the machine running, the stability of the job process, to achieve a high-altitude platform truck with load driving capabilities. (3) multi-function, multi-purpose operating system. Through the front bracket arm, lifting devices can be quickly installed or manned platform, material lifting, lifting and manned aerial work and other functions, as well as an extended job fast switching devices and various working device provides the interface . (4) a unique three-dimensional rotation lifts devices. Three-dimensional rotation lifts device designed to automatically keep both gesture by lifting materials, but can be adjusted to any height requirements for lifting material in the space, anywhere and in any direction, speed, precise control sensitive, fretting performance, meet the large cave on aerial work and ventilation pipe installation requirements.