Synchronous lifting device for sectional material feeding and discharging

The utility model relates to a synchronous lifting device for loading and unloading section bars, which comprises two bases which are transversely arranged at an interval, two bearing seats are transversely arranged on the bases at an interval, a rotating shaft is arranged between the two bearing seats, the two rotating shafts are connected through a shaft tube and synchronously rotate, a gear is arranged on each rotating shaft, a lifting cylinder is vertically arranged on each base, and the lifting cylinders are arranged on the bases. The lifting air cylinder is connected with lifting sliding plates which are vertically arranged in a sliding mode, racks are vertically arranged on the lifting sliding plates, the racks are meshed with gears, a cross beam is arranged between the two lifting sliding plates, a plurality of material supporting frames are arranged on the cross beam at intervals, and material supporting rollers are arranged on the material supporting frames. The device has the advantages of reasonab