Plate type support height adjusting device

The utility model belongs to the technical field of plate-type support height adjusting devices, and discloses a plate-type support height adjusting device. The main technical characteristics are as follows: the structure is simple; two wedge-shaped steel plates with opposite inclined planes are arranged above the embedded steel plate; a height adjusting steel plate is arranged above the wedge-shaped steel plate, internal threads are arranged in the embedded foundation sleeve, a first through hole and a second through hole are formed in the positions, corresponding to the embedded foundation sleeve, of the embedded steel plate and the height adjusting steel plate respectively, and foundation bolts composed of heads and screws are arranged in the first through hole and the second through hole. A first threaded hole is formed in the height adjusting steel plate, and a height adjusting bolt is arranged in the first threaded hole; the wedge-shaped steel plates are located on the inner sides of the height adjustin