METHOD AND DEVICE FOR DETECTING FAULTS ON SCREW DRIVE MECHANISM PATH OF LOADING Russian patent published in 2012 - IPC F16H25/20 

FIELD: transport.

SUBSTANCE: device for detecting faults on screw drive mechanism path of loading (3) which drive mechanism is intended to actuate element of aircraft wing devices and made with redundant loading path formed by screw (11) and secondary connecting link (21). The screw (1) and the link (21) are connected with each other with fixing against barring after screw pair in direction of power flow and linked with driven aerofoil (1, 2) and which are associated with separate loading paths (10, 20) before screw pair in direction of power flow. The device also includes angular position sensor (15) provided near primary screw (11) and control and signal processing device (30) connected with engine (14), primary brake (13) and primary angular position sensor (15) and containing fault detection function. Method for detecting faults on screw drive mechanism path of loading (3) consists in that it is suggested to fix secondary connecting link (21) against rotation using secondary brake (23) and when the primary brake (13) is released while keeping secondary connecting link (21) fixed using the secondary brake (23), to apply to redundant loading path (10, 20) preset torque moment from engine (14) via the primary screw (11) and rigid-in-torsion connection (29) of the primary screw (11) and the secondary connecting link (21) after screw pair. Herewith, in case of registration on angular position sensor (15) connected with the primary screw (11) a change of angular position which change is out of permissible value range specified for operable screw drive the output signal indicating fault detection is generated.

EFFECT: higher efficiency of wing devices system faults identification.

20 cl, 6 dwg