measuring device for determining the torque ripples and / or the drehwinkels.

摘要

PCT No. PCT/DE91/00072 Sec. 371 Date Aug. 26, 1991 Sec. 102(e) Date Aug. 26, 1991 PCT Filed Jan. 24, 1991 PCT Pub. No. WO91/12504 PCT Pub. Date Aug. 22, 1991.A measuring device for determining torque includes a measuring system, e.g. measuring coils, and a twistable torsion pipe (10) having throughgoing openings (12) extending in the axial direction. Crosspieces (13, 14) of different widths are located between the throughgoing openings (12). Slots (15) are formed across the broader crosspieces (13). Accordingly, at lower torques, the torque is transmitted only by the narrow crosspieces (14). If the torque exceeds the rigidity of the narrow crosspieces (14), the slot (15) is closed, i.e. the two parts (13a, 13b) of the broad crosspiece (13) contact one another. Accordingly, a higher torque can be transmitted by the crosspieces (13) in a second measurement area or, if the rigidity of the crosspieces (13) is great enough, the latter can be used as protection against overloading. Further, it is also possible to provide additional overload protection by providing a recess (35) and a protuberance (36) in the torsion pipe (10). The torque sensor is constructed in a particularly simple manner and can determine the torque in a plurality of measurement ranges and with the aid of overload protection.