Excavator bottom plate polishing device

The utility model discloses an excavator bottom plate polishing device which comprises an operation table, the top end of the operation table is fixedly connected with a supporting block, the side wall of the supporting block is fixedly connected with a motor, the output end of the motor is fixedly connected with a reciprocating lead screw, and the side wall of the reciprocating lead screw is in threaded connection with a first sliding block. A connecting rod is fixedly connected to the side wall of the first sliding block, a first grinding machine is fixedly connected to the other end of the connecting rod, a first grinding disc is fixedly connected to the output end of the first grinding machine, a supporting plate is fixedly connected to the top end of the operation table, a sliding groove is formed in the side wall of the supporting plate, and a second sliding block is slidably connected to the inner wall of the sliding groove. The side wall of the second sliding block is fixedly connected with a second g