| 摘要 |
PURPOSE:To make it possible to measure easily a load, etc., on a structure material by copying and concentrating the direction and magnitude of the strain of a power transfer member on a load cell. CONSTITUTION:To two fixed base cores 12' and 12'' fixed on power transfer member 10 at distance L, mandrels 14' and 14'' equal in height are fixed in parallel to member 10. Around mandrels 14' and 14'', fixed sheathe 20 is provided, and load cell 26 made of flexible strain sensing material 24 of length (l) having bonded strain gauge 22 fixed to mandrel 14' and coupling material 30 coupling the other end 6 of load cell 26 with strain transfer material 28 more rigid than load cell 26 are fitted freely slidably In said constitution, when L is displaced by DELTAL owing to force, strain transfer material 28 is strong to load cell 26, so that DELTAL concentrated on (l) on load cell 26 as it is. Therefore, strain epsilonL=DELTAL/L on member 10 is amplified to strain epsilon = epsilonLXL/l on load cell 26 and detected. |
