电动伸缩门主要有伸缩门体、机头、控制器三部分组成。
The electric expansion door is mainly composed of expansion door body, machine head and controller.
1、伸缩门体:伸缩门体是由门体大框、交叉撑、轴(定轴、滑轴)及门体轮等主要部件组成。门体整体为金属结构，按材质又分为不锈钢门体、铝合金门体、压铸铝门体。
1. Expansion door body: the expansion door body is composed of large frame, cross brace, shaft (fixed shaft, sliding shaft), door wheel and other main parts. The whole door body is of metal structure, which can be divided into stainless steel door body, aluminum alloy door body and die-casting aluminum door body according to the material.
2、机头:由驱动器和电气部分组成，它固定在门体的一端，带动门体伸缩运动，与门体配套使用。
2. Machine head: it is composed of driver and electrical part, which is fixed at one end of the door body to drive the door body to expand and move, and it is used together with the door body.
驱动器分普通型和机器人型。
The driver is divided into ordinary type and robot type.
3、控制器:由控制盒、台式控制器及手柄遥控器组成。
3. Controller: it is composed of control box, desk controller and handle remote controller.
1)、控制盒:固定在机头内，由它接收控制器发出的指令控制门体的运行。
1) control box: fixed in the head, it receives the command from the controller to control the operation of the door body.
2)、台式控制器:主要由值班人员在值班室内使用。
2) desk controller: it is mainly used by the personnel on duty in the duty room.
3)、手柄遥控器:主要配备车辆使用，可在机头周围10-30米内(根据现场的无线电通讯环境而定)活动控制大门的开、关。
3) handle remote control: it is mainly used for vehicles. It can control the opening and closing of the gate within 10-30 meters around the nose (depending on the radio communication environment on site).