Device for measuring the torque, the direction of rotation and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission of a wind power plant

US8955394B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Martin Voss · Fort Lauderdale, US
• Felix Hess · Memmingen, DE
• Ralf Schmidt · Nuremberg, DE
• Jochen Fehse · Lindow (Mark), DE
• Ulrich Vieth · Dortmund, DE

Key dates

• Filing date: Dec 20, 2012
• Grant date: Feb 17, 2015
• Expiry date: Feb 6, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for measuring the torque, the direction of rotation, and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission, includes bands configured to be mounted in a fixed position on an outer circumference of the shaft. The bands are configured to be detected by measuring sensors and allow torsion of the shaft to be measured. Each of the measuring sensors has a Hall effect sensor, and the bands are respectively arranged at two different positions on the outer circumference of the shaft. Each of the bands includes polygonal apertures and/or depressions having webs located between the apertures and/or depressions. The webs are configured to be detected by the measuring sensors. A method includes operating the device to measure the torque, the direction of rotation, and the speed of rotation of the shaft.