Automatic positioning device for shuttle vehicle

The invention discloses an automatic positioning device for a shuttle vehicle, and belongs to the technical field of shuttle vehicles. The device comprises a shuttle vehicle body, circular supportingplates are installed at the left side and the right side of the bottom of the shuttle vehicle body correspondingly, supporting columns are installed at the circle centers of the circular supporting plates, the bottoms of the circular supporting plates are slidably connected with rails, and limiting blocks are installed at the left ends and the right ends of the rails correspondingly. Through grooves with the inner diameters matched with the outer diameters of the supporting columns are formed in the middles of the rails, and the bottoms of the supporting columns penetrate through the through grooves to extend to the bottoms of the rails. The automatic positioning device is novel in design and simple in structure, a speed sensor is arranged, the current speed of the shuttle vehicle body canbe sensed, when the shuttle vehicle body stops moving, the speed sensor sends a signal to a control device, the control device starts an air pump, so that an annular air bag expands, friction platesare tightly attached to the bottoms of the rails, the friction force between the friction plates and the rails is increased through an arranged soft plastic cushion layer, the shuttle vehicle body canbe stably fixed to the current position, and automatic positioning is achieved.