Height-adjustable platform type device

The utility model discloses a height-adjustable platform type device which comprises supporting legs A, a cross beam A, a baffle, a working table top, a side plate, a clamping groove, supporting legs B, a cross beam B and a mechanical frame, the two supporting legs A and the two supporting legs B are symmetrically fixed to the two sides of the mechanical frame respectively, and two limiting plates are symmetrically welded to the positions, close to the upper portions, of the inner sides of the supporting legs A; a row of clamping grooves are formed in the limiting plate, the clamping grooves are evenly distributed in the limiting plate, a baffle is fixed to the middle of one side of the working table top through fastening bolts, and side plates are fixed to the other two sides, connected with the baffle, of the working table top through fastening bolts; side plates on the two sides of the working table are fixed to the clamping grooves in the two supporting legs A through positioning pins. The height of the w