Steel bar polishing and rust removing device for building

The utility model discloses a steel bar polishing and derusting device for a building, relates to the technical field of derusting, and mainly aims to solve the problem that the derusting efficiency and quality are influenced by scrap accumulation of an existing device. Comprising a grinding unit and a mounting frame used for mounting the grinding unit, and further comprises a bottom plate arranged on one side of the mounting frame, and the mounting frame is rotationally connected with the bottom plate; the power mechanism is used for driving the mounting frame to swing back and forth around a rotary connection point with the bottom plate; the vibration mechanism is used for driving the mounting frame to vibrate, an adjusting mechanism is connected between the grinding piece and the grinding sleeve, the power mechanism and the vibration mechanism are arranged, the mounting frame inclines in a reciprocating mode, chip removal is facilitated, the mounting frame is driven to vibrate through the vibration mechani