Integral lifting device of extruder

The invention discloses an integral lifting device of an extruder, and the integral lifting device provided by the invention mainly comprises four lead screw lifts, two spiral bevel gear steering machines, one motor direct-connected worm reducer, a quincuncial elastic coupling, a transmission shaft, four lift bases, two steering machine bases and one speed reducer seat, wherein the speed reducer seat and the steering machine bases are fixed on the rear end of the underframe of a matched extruder, and the lift bases are symmetrically welded at the two sides of the underframe of the extruder; and the worm reducer, the steering machines and the lifts are respectively arranged on the corresponding seats and connected together in series by virtue f the transmission shaft and the quincuncial elastic coupling. The lifting device disclosed by the invention is directly arranged on the base of the extruder, when the product is required to be changed, the product can be changed just only by adjusting the integral height