Sheet selecting or plate falling device of plate glass production line cold end

The utility model discloses a sheet selecting or plate falling device of a plate glass production line cold end. The device comprises hanging roller beds, transmission mechanisms, lifting mechanisms and a control system, wherein four groups of the hanging roller beds are arranged in parallel to one another, and are placed with intervals; one end of the length direction of each group of the hanging roller beds is fixedly connected with a supporting top end which is vertical to the ground at the end of the length direction by virtue of a crank shaft, and the other end of the length direction is hung in the air to form a cantilever end; a sliding rail is arranged on the lower surface of each hanging roller bed close to the cantilever end; four groups of the transmission mechanisms are respectively arranged at the connecting ends among each group of the hanging roller beds and the crank shaft; five groups of the lifting mechanisms are arranged, wherein four groups of the lifting mechanisms are single-cylinder lif