The utility model discloses a loading test analogue means is waved to back -and -forth movement formula, including base swing arm frame, base swing arm support and base swing arm, base swing arm frame and track sliding connection, base swing arm frame be by the drive of base swing arm frame straight line drive arrangement, and the base swing arm sets up on base swing arm support is rotated at the horizontal direction by the drive of base swing arm rotary driving system, the base swing arm is provided with base swing arm pivot, and base swing arm pivot is just being reversed the drive of servo drive system by the base swing arm and is being rotated the coaxial base swing arm need checking sample connecting device that is provided with of base swing arm pivot front end. The utility model is used for simulate the motion form that the sub - conductor spacer of in -process wire was waved to actual circuit, come the actual stress condition of the alternate conductor spacer of analysis in the wire is waved, further summarize impaired law of alternate conductor spacer and boundary condition, provide essential data for alternate conductor spacer developments bearing characteristics's networking detects.