Hydraulic two-direational barrier for vehicles

The utility model relates to a hydraulic dual directional barrier for vehicles, which is composed of a fixed support frame, a lifting frame, a hydraulic oil cylinder, and a hydraulic pressure electric control system. The lower end of the oil cylinder is fixed on a transverse beam, and the upper end is connected with the lifting frame. Both sides of the lifting frame are welded with symmetrical roller support frames, and both sides of the transverse beam are provided with symmetrical grooved tracks. Via the contact position of each rolling wheel, the mutual distance between the support frame and the track can be adjusted. Both sides of the transverse beam are provided with posts, and the upper end thereof is connected with a longitudinal beam which is positioned on a basic surface A. Via the actions of an electromagnetic reversing valve and a pressure relay, an oil cylinder piston is moved by the hydraulic pressure electric control system for driving the lifting frame to lift and form a road block for blocking the vehicles. When the lifting frame falls and is parallel to the roadway, the vehicles can pass through the road block. The barrier has the advantages of high strength, difficult damage, and overload protection.