Steering structure

The utility model particularly relates to a steering structure which comprises a lining trolley body and supporting bottom beams installed on the two sides of the bottom of the lining trolley body and further comprises steering assemblies, the two ends of each supporting bottom beam are each provided with one steering assembly, a second motor and a second speed reducer drive a driving wheel to rotate, and the driving wheel drives a driven wheel to rotate through a transmission belt. A first motor and a first speed reducer are used for driving a driving gear to rotate, so that the driving gear drives a driven gear to rotate, the driven gear drives a worm to rotate, the worm drives a worm wheel to rotate, and the lining trolley body is driven to move in the tunnel; therefore, the worm wheel drives the rotating shaft to rotate, the rotating shaft drives the roller carrier and the rollers to rotate, the moving angle of the rollers is adjusted, the rollers can steer in a tunnel without a rail, the four steering as