Bimetal metallurgical bonding composite seamless tube blank preheating lifting platform

The invention belongs to the technical field of heating devices, and particularly relates to a bimetal metallurgical bonding composite seamless tube blank preheating lifting platform. The lifting platform comprises a stand column, a lifting mechanism, a lifting sliding box and a preheating device, the lifting sliding box is arranged on the stand column, the lifting mechanism is connected with thelifting sliding box, and the lifting sliding box is driven by the lifting mechanism to move along the stand column. The preheating device is connected with the lifting sliding box through a swing arm,and the two ends of the swing arm are hinged to the preheating device and the lifting sliding box respectively. The lifting platform further comprises a limiting pull rod, the two ends of the limiting pull rod are hinged to the lifting sliding box and the preheating device respectively, and the limiting pull rod is of a telescopic structure. By changing the length of the limiting pull rod, the relative positions of the pr