一个完整的液压升降机系统是由五个部分组成：动力元件、执行元件、控制元件、辅助元件及液压油。
A complete hydraulic lift system is composed of five parts: power components, the implementation of components, control components, auxiliary components and hydraulic oil.
 
液压升降机将原动机的机械能转换成液体的压力能的是动力元件，动力元件一般指液压升降平台上的油泵。其结构形式一般有齿轮泵、叶片泵和柱塞泵。
The hydraulic lift is the original motive of the mechanical energy into fluid pressure energy is power element, power element generally refers to the oil pump of the hydraulic lifting platform. The structure of the general form of gear pump, vane pump and piston pump.

 将液体的压力能转换为机械能，驱动负载作直线往复运动或回转运动的是执行元件。如液压缸和液压马达。液压升降机液压系统中控制和调节液体的压力、流量和方向的是控制元件。
The pressure of the liquid can be converted to mechanical energy to drive the load for a linear reciprocating or rotary motion is the implementation of components. Such as hydraulic cylinders and hydraulic motor. The control and regulation of the liquid pressure in the hydraulic system of hydraulic elevator, flow and direction of the control element.

油箱、滤油器、油管及管接头、密封圈、压力表、油位油温计等这些是属于辅助元件。
Oil tank, oil filters, tubing and pipe joints, seals, pressure gauge, oil level oil thermometer etc. These are auxiliary components.

 液压升降机液压油是液压升降平台系统中传递能量的工作介质，有各种矿物油、乳化液和合成型液压油等几大类
Hydraulic lift hydraulic oil is the work of the energy transfer medium hydraulic lifting platform in the system, there are a variety of mineral oil, emulsion type hydraulic oil and other categories