Liftable conveyor underframe

The utility model provides a liftable conveyor underframe, which relates to the technical field of conveyors, and comprises a base, a support frame is arranged at the upper end of the base, a conveyor main body is arranged at the upper end of the support frame, a hydraulic cylinder is fixedly mounted at the upper end of the base, a guide plate is fixedly connected to the upper end of the base, and the guide plate is fixedly connected to the lower end of the base. A movable plate is fixedly installed at the lower end of the supporting frame, clamping grooves are formed in the surfaces of the guide plate and the movable plate, a clamping plate is arranged between the guide plate and the movable plate, at the moment, the conveyor underframe is divided into two structures of the base and the supporting frame, and descending and ascending of the supporting frame are controlled through starting and stopping of a hydraulic cylinder. The height of the bottom frame can be conveniently adjusted by people according to t