Patent ID: 9377393
Filing Date: 2016-06-28
CPC Classification: B82Y,G01N,G01Q

Claim Text:
1. A method for eliminating the horizontal offset of a traction force test device, comprises at least four single-arm cantilever beams which are grouped as two sets; wherein a first set of single-arm cantilever beams ( 100 / 100 ′) whose ends are fixedly connected in parallel; wherein one free end of the first set of single-arm cantilever beams ( 100 / 100 ′) is connected with a test tool while other free end is fixed on a substrate; wherein when a test force F being applied onto the end of the first set of single-arm cantilever beams connected with the test tool, horizontal offset X 1 away from the perpendicular line to the test tool, is neutralized by horizontal offset X 2 heading to the perpendicular line to the test tool generated by the end of the first set of single-arm cantilever beams connected on the substrate, so that the end of the first set of single-arm cantilever beams connected with the test tool only having a vertical displacement to the test tool but not having a horizontal offset; a second set of single-arm cantilever beams ( 200 / 200 ′) arranged at intervals in a same direction to the first set of single-arm cantilever beams ( 100 ) 100 ′); wherein the two single-arm cantilever beams ( 200 / 200 ′) of the second set of single-arm cantilever beams ( 200 / 200 ′) is fixedly connected with ends in parallel; and one free end of the second set of single-arm cantilever beams ( 200 / 200 ′) is connected with the test tool with a hook while other free end of the second set of single-arm cantilever beams ( 200 / 200 ′) is fixed on the substrate; wherein when the test force F being applied onto the end of second set of single-arm cantilever beams ( 200 / 200 ′) connected with the test tool, the horizontal offset X 1 away from the perpendicular line to the test tool generated by the end of second set of single-arm cantilever beams ( 200 / 200 ′) connected with the test tool, is neutralized by the horizontal offset X 2 heading to the perpendicular line to the test tool generated by the end of the second set of single-arm cantilever beams ( 200 / 200 ′) connected on the substrate, so that the end of the second set of single-arm cantilever beams ( 200 / 200 ′) connected with the test tool only having the vertical displacement to the test tool but not having the horizontal offset.