Design of multi-function flexibility early warning height-limited portal frame

The function of height-limited portal frame in the highway toll lane is single, its height is not adjusted according to actual conditions, the overall damage degree is high, its components off easily cause two hazardous events. In order to resolve these problems, we use the video detection technology, flexible material and warning technology to design a new kind of height-limited portal frame. The new height-limited portal frame implements the early warning function of restricted vehicle and the dynamic adjustment of the limited frame height. It can alarm with sounds and images. Furthermore its components are safe and easy to be repaired.