Supplementary device of screwing up of rag bolt

The utility model relates to a supplementary device of screwing up of rag bolt, include that a fixed unit that has bolt positioning hole is located the movable unit below the fixed unit to and the intermediary unit of fixed unit of connection and activity unit, intermediary unit is the telescopic link of an adjustable length, and its one end is connected with one side of fixed unit, and the other end rotates with the activity unit to be connected, still include, the tractive device, the both ends of tractive device respectively with intermediary unit and activity unit connection, the tractive device encloses into a triangle -shaped structure with activity unit and intermediary unit jointly. The utility model is used for the supporting spanner during construction bolt overcomes the gravity of spanner, makes the rotation spanner that the workman can be laborsaving, has effectively reduced workman's intensity of labour, has improved work efficiency. 本实用新型涉及种地脚螺栓辅助拧紧装置，包括，具有螺栓定位孔的固定单元，位于固定单元下方的活动单元，以及连接固定单元与活动单元的