Formation supporting plate assembly

The utility model discloses a formation supporting plate assembly which comprises a supporting plate and a tray, the supporting plate comprises an aluminum supporting plate, a heating plate, a counterweight plate, a socket mounting seat and a bus socket, two rows of small holes are formed in the top surface of the aluminum supporting plate, and steel ball rollers are arranged in the small holes. The tray comprises an aging bottom plate, a test clamp, a PCB, a circuit board diaphragm and a wear-resistant strip, the wear-resistant strip is located above the steel ball roller, and a clearance strip hole is formed in the position, corresponding to the steel ball roller, of the wear-resistant strip. The steel ball idler wheels are arranged on the supporting plate, the tray can slide in and outof the steel ball idler wheels, and therefore friction force of sliding of the tray is reduced, and the abrasion-resistant strips are arranged on the bottom face of the tray, are made of stainless steel, have enough abrasion