Stress test rig for helicopter gear units

US6047596A · kind A · utility

Assignee

• ZF Luftfahrttechnik GmbH · DE

Inventors

• Herbert Krug · Ludwigshafen, DE
• Detlef Brüggemann · Vellmar, DE
• Gunter Schroder · Minden, DE

Key dates

• Filing date: Sep 3, 1998
• Grant date: Apr 11, 2000
• Expiry date: Sep 3, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M13/026
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The stress test rig consists of a rigidly mounted part which contains the devices uniformly used for all types of test gears and an assembly truck (37) which holds the test gear (16) and the required adapter devices. A test rig gear unit (2) forms a continuous stress circuit with a superimposed gear unit (9), an adaptation gear (23) and a second test rig gear (19) wherein the stress torque is set by a control unit (15) through the superimposed gear unit (9). The regulation variable for the stress torque is determined up to more than 80% by a control network (31). The test rig gear unit (2) is a bevel gear wheel and the superimposed gear unit (9) has a bevel gear step (13) so that the output shaft (14) of the superimposed gear unit (9) is pivoted and has a height adapted to an input shaft of an adaptation gear unit (23) or of a test gear unit (16).