Building rebar rust removal device with high degree of automation

The invention relates to the technical field of building equipment and discloses a building rebar rust removal device with high degree of automation. The building rebar rust removal device comprises abase and an L-shaped support plate fixedly arranged at the upper end of the base, wherein a strip-shaped groove is transversely formed in the lower end of the horizontal part of the L-shaped supportplate; a reciprocating screw rod is transversely arranged in the strip-shaped groove; one end of the reciprocating screw rod is rotatably connected with the side wall of the strip-shaped groove through a first rolling bearing; the other end of the reciprocating screw rod penetrates through the side wall of the strip-shaped groove and extends outwards; a motor case is fixedly arranged on the side wall of the horizontal part of the L-shaped support plate; a drive motor is fixedly arranged in the motor case; the end, outside the L-shaped support plate, of the reciprocating screw rod penetrates through the side walls of th