Height-adjustable bearing pedestal

The invention discloses a height-adjustable bearing pedestal. A connecting bearing is fixed into a pedestal body. The two sides of the pedestal body are symmetrically and fixedly provided with slidingblocks. The pedestal body is connected with an adjusting device through the sliding blocks. The adjusting device comprises a fixed plate, a supporting frame and fixing lead screws. The supporting frame is fixed to the top of the fixed top. The inner walls of the two sides of the supporting frame are symmetrically provided with sliding grooves. The outer wall of the supporting frame is provided with a slot. The slot communicates with the sliding grooves. The sliding blocks are slidably connected into the sliding grooves. The sides, far from the pedestal body, of the sliding blocks are symmetrically provided with threaded holes. The fixing lead screws penetrate through the slot and are movably connected with the threaded holes. The sides, far from the sliding blocks, of the fixing lead screws are fixedly provided w