Unit for measuring friction torque under load and test rig for a rotary device equipped with such a measuring unit

摘要

The present invention of a unit for measuring friction torque under a load and test equipment for a rotating device on which a measurement unit is mounted relates to the unit (12) for measuring the friction torque under the load of the rotating device (2) comprising a torque sensor (41). The measuring unit (12) comprises: a shaft (20) intended so as to be coupled to the rotating device (2); a tubular casing (33) wherein the shaft (20) extends; a measuring plate (39) coupled to the shaft through an oldham coupling (40) and cooperating with the torque sensor (41) such that the shaft (20) transmits only the torque to the measuring plate (39); and a bearing unit (42) interposed between the shaft (20) and the measuring plate (39). Therefore, the present invention is capable of ensuring reliable repeatable measurements.