| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotation torque measuring device capable of performing torque calibration (dynamic torque calibration) by measuring rotation torque applied on a pile to be buried, and improving accuracy of measurement data of the rotation torque.SOLUTION: A rotation torque measuring device 1 includes: a torque transmission member 2 for measurement detachable from/attachable to a pile, including an outer peripheral surface 2a having a circular cross section, for rotating integrally with the pile and transmitting rotation torque; a magnetostrictive part 3 provided on the outer peripheral surface 2a of the torque transmission member 2 for measurement, for going around; and a sensor 4 provided so as to be rotatable relatively with respect to the torque transmission member 2 for measurement, while keeping a predetermined distance from the magnetostrictive part 3. In addition, the rotation torque measuring device 1 further includes: a casing 5 which can rotate relatively with respect to the torque transmission member 2 for measurement, and to which the sensor 4 is attached; and bearings 6, 7 disposed between the casing 5 and the torque transmission member 2 for measurement. |
