Device for assisting disabled person in cleaning back

The device comprises a bottom plate, a top plate and a supporting column, the two ends of the supporting column are connected with the bottom plate and the top plate respectively, the top plate is provided with a first motor, an output shaft of the first motor is connected with a first threaded rod, the first threaded rod penetrates through a first moving block, and a first sliding groove is formed in the supporting column. A first sliding block is arranged in the first sliding groove in a sliding mode and connected with the first moving block. A second motor is arranged on the first moving block, a second threaded rod is connected to an output shaft of the second motor and penetrates through the second moving block, a fixing rod is connected to the second moving block, a sliding rod is connected to the fixing rod, a front plate is connected to the front wall of the top plate, a strip-shaped hole is formed in the front plate, and the sliding rod movably penetrates through the strip-shaped hole. The front wall