Self-propelled hydraulic trestle for tunnel construction

The self-propelled hydraulic trestle for tunnel construction comprises a main bridge, a front bridge and a rear bridge, transverse moving mechanisms are arranged at the front end and the rear end of the main bridge, a left telescopic mechanism is arranged at the upper end of the front bridge, a right telescopic mechanism is arranged at the upper end of the rear bridge, and automatic walking devices are arranged at the front end and the rear end of the main bridge. A supporting device is arranged in the middle of the lower end of the main bridge. According to the hydraulic trestle, all the components are in hydraulic transmission, work is stable, reliability is high, the hydraulic transmission is adopted, so that the trestle is provided with power, advancing, retreating and left and right transverse moving can be conveniently achieved, any external power such as an excavator and a loader is not needed, the damping effect can be achieved, pressure can be offset, the telescopic cylinder can be protected, and the