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A generator-gearbox assembly for a wind turbine

A technology of wind turbines and generators, which is applied in the direction of wind motor combination, wind power generation, wind engine, etc., and can solve problems such as difficulty in setting it in the correct position

Active Publication Date: 2021-07-30
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it is very difficult to set the output shaft in the correct position relative to the bolt holes of the generator for attachment

Method used

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  • A generator-gearbox assembly for a wind turbine
  • A generator-gearbox assembly for a wind turbine
  • A generator-gearbox assembly for a wind turbine

Examples

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Embodiment Construction

[0036] Wind turbines use large rotors with multiple rotor blades to convert the kinetic energy of wind into electrical energy. A typical horizontal axis wind turbine (HAWT) includes a tower, a nacelle atop the tower, a rotating hub or "rotor" mounted to the nacelle, and a plurality of wind turbine rotor blades coupled to the hub. Depending on the wind direction, the nacelle and the rotor blades are turned and guided in an optimal direction by a yaw system for rotating the nacelle and a pitch system for rotating the blades. The nacelle houses many of the functional components of the wind turbine, including for example the generator, gearbox, transmission and rotor brake components, and converter equipment for converting mechanical energy at the rotor into electrical energy for supply to the grid. The gearbox steps up the speed of the low speed main shaft and drives the gearbox output shaft. The gearbox output shaft in turn drives a generator that converts the rotation of the g...

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Abstract

Disclosed is a generator-gearbox assembly for a wind turbine. The generator-gearbox assembly (200) for the wind turbine (100) comprises a generator (240) having a generator rotor (245); a gearbox (220) comprising an output shaft (230); and a connection assembly (300). The connection assembly (300) comprises a hub abutment surface (310), provided at an end (235) of the output shaft (230) and a plurality of shaft bolt holes (315); a hub (320) associated with the generator rotor (245) and comprising a body (325) and a first connecting portion (340) having a shaft abutment surface (345) facing towards the hub abutment surface (310) and at least one elongated slot (360) extending through the first connecting portion (340). The number of elongated slots (360) is less than or equal to the number of shaft bolt holes (315). A plurality of fasteners fixedly connects the hub (320) to the hub abutment surface (310), each fastener extending through a respective elongated slot (360) and a shaft bolt hole (315). Beneficially, the arrangement of the hub component with elongated slots to accommodate fixing fasteners reduces the likelihood of having to manoeuvre a cumbersome drive shaft or generator rotor into an exact position for attachment to each other. Since the slots are elongated, when the drive shaft is arranged to abut the first flange during assembly it is more likely that the shaft bolt holes of the hub abutment surface align with the elongated slots of the first flange, and so it is more likely that a connection can be made between the drive shaft and the rotor.

Description

technical field [0001] The invention relates to a connection assembly for fixedly connecting an output shaft of a gearbox of a wind turbine to a generator of a wind turbine and a method of connecting an output shaft of a gearbox of a wind turbine to a generator of a wind turbine. The invention also relates to a generator-gearbox assembly and a wind turbine. Background technique [0002] A very challenging aspect of assembling a wind turbine is connecting the gearbox output to the generator input of the wind turbine. [0003] Conventionally, the generator rotor and the gearbox are connected at the output shaft of the gearbox by means of bolts. At the outer end of the output shaft, a plurality of bolt holes are usually provided in a certain arrangement. In such an arrangement, the connecting parts of the rotor of the generator have a corresponding number and arrangement of bolt holes. In order to connect the output shaft of the generator and the gearbox, the output shaft is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/25F03D15/00
CPCF03D15/00F03D9/25Y02E10/72F05B2220/706F05B2230/604F05B2260/4031F05D2240/60F16D1/06F16D2001/062
Inventor L·朗瓦特·克罗赫H·Z·曼尼克
Owner VESTAS WIND SYST AS