EP 1173676 A1 20020123 - DEVICE FOR ADJUSTING THE PITCH OF THE BLADES OF A WIND TURBINE AND A METHOD FOR STOPPING THE ROTATION OF THE MAIN SHAFT
Title (en)
DEVICE FOR ADJUSTING THE PITCH OF THE BLADES OF A WIND TURBINE AND A METHOD FOR STOPPING THE ROTATION OF THE MAIN SHAFT
Title (de)
REGELVORRICHTUNG FÜR DAS VERSTELLEN UND STILLSETZEN DER FLÜGEL EINER WINDKRAFTMASCHINE
Title (fr)
nDISPOSITIF PERMETTANT D'AJUSTER LE PAS DE PALES D'EOLIENNES ET METHODE PERMETTANT DE FAIRE CESSER LA ROTATION DE L'ARBRE PRINCIPAL
Publication
Application
Priority
- DK 0000075 W 20000223
- DK PA199900493 A 19990414
- DK 9900433 W 19990813
Abstract (en)
[origin: WO0061942A1] The present invention relates to a device and a method for adjusting the pitch of wind turbine blades. Adjusting may be a controlling of the pitch in a situation during normal operation of the wind turbine or may be an alteration of the pitch in a fail-safe situation. Activatable driving means being a pitch motor is used for controlling the pitch. A so-called negative brake mechanism is used for altering the pitch in a fail-safe situation and thereby braking the rotation of the main shaft. The fail-safe braking takes place by means of introducing a difference in rotation of a synchronising shaft or a back-up brake wheel in relation to the main shaft. The difference in rotation of the synchronising shaft or the brake wheel is transferred to an angle gear or a worm gear that transfers the rotation to pivot joints onto which the blades are mounted and thereby altering the pitch of the blades.
IPC 1-7
IPC 8 full level
F03D 7/02 (2006.01)
CPC (source: EP)
F03D 7/0224 (2013.01); F03D 7/0268 (2013.01); F05B 2270/20 (2013.01); F05B 2270/328 (2013.01); Y02E 10/72 (2013.01)
Citation (examination)
WO 0009885 A1 20000224 - NEG MICON A S [DK], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0061942 A1 20001019; AU 2658800 A 20001114; EP 1173676 A1 20020123
DOCDB simple family (application)
DK 0000075 W 20000223; AU 2658800 A 20000223; EP 00904865 A 20000223