Bracket for polishing workpiece of vibrating screen

The invention discloses a bracket for polishing a workpiece of a vibrating screen. A working platform is provided with a polishing machine and a lifting mechanism, the lifting mechanism comprises a base, a screw rod, a thrust bearing and a sleeve. A plurality of reinforcing ribs are uniformly distributed between the sleeve and the base and reinforcing ribs are connected with the sleeve and the base, the inner portion of the sleeve is provided with a thread, and the lower end of the screw rod is arranged in the inner portion of the upper end of the sleeve and connected with the thread inside the sleeve in a matched mode; the lower surface of a polishing platform is connected with the upper end of the screw rod through the thrust bearing, one side of the base is provided with a groove steel by welding, and one side of the groove steel is provided with a jig. The bracket is simple in structure, reasonable in design, low in cost, and capable of regulating the height of the polishing workpiece and the location of