The lifting height limit replaces the previous fixed height limit elevated, which is no longer fixed at a height, but can be adjusted randomly within the height limit range of 5 meters. 

Hydraulic lifting control: 

1、After the installation of lifting overhead limit, real-time control of "up, down and stop" can be carried out through "lifting button" and equipment; Better control traffic conditions. 

2、The crash-proof intelligent lifting limit viaduct is a kind of intelligent lifting limit equipment widely used at present. 

3、The hydraulic system is the power system of the high-bar equipment, mainly including the general assembly of the station, the motor pump group, the control valve group, the hydraulic cylinder and the connection pipeline.