The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2016
Filed:
May. 02, 2013
Zf Wind Power Antwerpen N.v., Lommel, BE;
Dirk Leimann, Edegem, BE;
ZF Wind Power Antwerpen N.V., Lommel, BE;
Abstract
A method for lubricating a gearbox of a wind turbine. The gearbox comprises a plurality of gears and shafts supported by bearings of which at least one bearing is a plain bearing. The gearbox furthermore comprises a lubrication system with both a mechanical pump and an electrical pump for feeding the gears and bearings with lubricant, wherein a difference between a volume capacity of the mechanical and electrical pump is a maximum 40%. The method comprises the step of controlling at least one valve, during start-up of the gearbox, and feeding lubricant to the bearings via the electrical pump; feeding lubricant to the bearings and the gears, during normal operation of the gearbox, via the electrical pump and the mechanical pump; and feeding lubricant only the bearings, during the absence of electrical power supply, via the mechanical pump.