用于上下层面作业线的连接与过度，它具有能耗低、无噪音、维护简易等特点，与输送线连接可组成立体生产线，可连接输送工作，速度可根据需要灵活调节。按形式有四柱升降机和二柱升降机，按传动介质分为链式传动和带动传动。

Used to level up and down line connection with excessive, it has many characteristics, such as low energy consumption, no noise, easy maintenance, connected to the transmission line can be composed of 3 d production line, the work can be connected to send, speed can be adjusted flexibl according to need. According to the form of four column lifts, elevators and 2 column according to the transmission medium is divided into chain transmission and drive.