Inlet supporting plate device of hot rolled plate temper mill

The invention belongs to the technical field of hot-rolled plate temper mills, particularly relates to an inlet supporting plate device of a hot-rolled plate temper mill, and aims to solve the problems that screws on an existing guide cylinder are frequently broken, a cylinder body is damaged and leaks oil, the tail end of the cylinder is close to a roller way, flange screws are loosened to scratch the roller way, surface scratches and pits are caused, and a hose is seriously worn during internal telescopic action, so that the service life of the guide cylinder is prolonged. In order to solve the problems of frequent oil leakage, large swinging angle of a cylinder body and oil leakage caused by sealing of a tail flange block in the prior art, the invention provides the following scheme that the inlet supporting plate device comprises a base, a supporting seat is fixedly mounted at the top of the base, and a roller way is rotatably mounted on the front side of the supporting seat. Screws on the guide cylinder