Car lift is a lift aerial equipment to be installed in the car. Special chassis from work, working jib, three-dimensional full-rotation mechanism, flexible clamping device, hydraulic systems, electrical systems and safety devices and other devices working device by turret, working jib, retractable soft chains and other components. By slewing ring turntable mounted on the frame, driven by the rotating mechanism can achieve 360. Full swing. Slewing mechanism includes a planetary gear, normally closed brake, hydraulic motor, etc., and slewing ring with external gear transmission mode. Working with turret boom connected to three telescopic structure, Boom rounded quadrilateral section, among the working arm oriented nylon sliders. Section telescopic cylinder direct promotion arm, the arm in the third quarter telescopic mechanism of action of the chain and the second arm retractable sync. Conducted by luffing jib luffing cylinder pushing all hinge points are self-lubricating bearings, lower maintenance requirements, all of which require lubrication points are equipped with refueling port, you can easily maintain. To facilitate maintenance, all cylinders, external piping, pipe and cable have protection towline. Full three-dimensional rotation mechanism mounting location devices or systems are generally determined by the elevation and direction of the two parameters. Due to the requirements of the object to be lifted in three mutually perpendicular directions of space can be independently rotated so that the object can be obtained at any mounting angle, so the design of the full three-dimensional rotation as shown in Figure 3, namely the set in horizontal and vertical direction ± 90. Rotation mechanism. Tilt angle direction by luffing carried by fine-tuning to achieve leveling cylinders, should no longer separate body, thereby reducing institutional settings. Swivel rotary body, the internal organization of the screw nut, screw hydraulic push to drive the rotation of the outer ring, screw stroke is controlled by controlling the rotation angle of the rotary body. Hydraulic oil based hydraulic lock on the road, still locked when hydraulic oil, rotating body can reliably locate. Rotational small size, minimal hydraulic flow can be a great angle of rotation, the problems caused by the rotation speed is difficult to control. To solve the problem of speed control, in the hydraulic system set separately micropump, which displacement of only 0.6ml / min, micro-pump driven by a dedicated motor, can ensure constant speed, thereby providing a stable flow for the rotary system. Part.