| 摘要 |
PURPOSE:To measure an accurate load by a simple device by detecting a turning force generated as a reaction force at the main body of the 1st speed reducer composed of a planetary gear mechanism and measuring torque which operates on a pinion. CONSTITUTION:The elevating device J for the working table body 1 consists of the 1st speed reducer 5 which reduces the turning force of a motor 4 through the planetary gear mechanism, the 2nd speed reducer 6 which further reduces the rotation, and the pinion 8 which engages a rack 8. Then, load converters 15 and 15' are provided to tip parts of arm bodies 13 and 13' of the 1st speed reducer 5. Then, when torque is transmitted from the output shaft of the 1st speed reducer 5 to the pinion 7 engaging the rack 8, the turning force as the reaction force is generated at the main body of the 1st speed reducer 5 and transmitted to the load converters 15 and 15', so the force suitable to the torque is changed into resistance variation to calculate and display a load which operates on tooth surfaces of the pinion 7. |
