Three-sucker limiting rod control device

A three-sucker limiting rod control device is adsorbed on an engine cover through suckers, hinge seats are fixed to sucker seats of the suckers, hinge plates are connected into the hinge seats, a plane pair and a rotating pair are formed, and when a wheel turns, a connecting rod can generate arc-shaped displacement with the vertical line where the rotating center point of the wheel is located as a rotating shaft; at the moment, under the action of the plane pair and the rotating pair, the limiting rod can pull the hinge plate to rotate with the vertical pin shaft as the center and can push and pull the vertical pin shaft to slide along the long hole, so that the control device can be linked with the limiting rod, and the situation that the limiting rod is pinned due to steering is avoided; in addition, a sliding face horizontally arranged in the plane pair can provide horizontal limiting for the hinge plate, so that the hinge plate can limit the limiting rod through the sliding seat, the limiting rod cannot s