Plate carrying trolley for loading and unloading plates

The invention discloses a plate carrying trolley for loading and unloading plates. according to the plate carrying trolley for loading and unloading the plates, two-time transmission of force is realized by utilizing the lever principle, and rising and falling of one end of a main lever are controlled, so that lifting and falling of a supporting plate by linkage levers are realized; due to the fact that the lengths of the four linkage levers are the same, the positions of supporting points are the same, and the force application magnitudes is the same, so that the four linkage levers simultaneously eject four corners of the supporting plate, the plane where the supporting plate is located is kept horizontal all the time, stability is good, and falling of the stacked plates is effectively avoided; and moreover, the plate carrying trolley for can automatically advance or retreat without manual driving, and furthermore, turn-around steering does not need to be carried out, so that the plate carrying trolley is s