电动伸缩门轨道类型
Track type of electric expansion door
在早期，电动门一般采用三角钢双轨，其施工难度大，路面要求高。随着技术的不断更新，双轨已经被淘汰。
In the early days, the electric door generally used triangular steel double track, which is difficult to construct and requires high road surface. With the continuous update of technology, dual track has been eliminated.
市面上主流的轨道模式是单轨和无轨两种。单轨就是在路面用膨胀螺栓固定一根实心方钢或轻轨（轻轨铺设要求较高，但使用寿命较长，采用较多），以此来进行电动门的导向和抗风;无轨就是在路面铺设隐藏式磁铁，门体在运行过程中根据底部的感应系统来自动导航。
The main track modes on the market are monorail and trackless. Monorail is to fix a solid square steel or light rail with expansion bolts on the road (light rail laying requires higher requirements, but its service life is longer and more is used), so as to guide and resist the wind of the electric door; trackless is to lay a hidden magnet on the road, and the door body will automatically navigate according to the induction system at the bottom during the operation.