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Elastic self-aligning bearing

A supporting and swinging technology, which is applied in the field of swinging supporting parts, can solve the problems of complicated replacement, complicated pretensioning of large conical supporting parts, and difficult changes or changes.

Active Publication Date: 2015-07-22
ESM ENERGIE UND SCHWINGUNGSTECHN MITSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as turbines have become larger, it has become increasingly difficult to vulcanize and produce such large conical bearings from one part
Furthermore, pretensioning these large tapered supports is complex and difficult
Furthermore, replacing such large and bulky conical supports when required is very complicated, since the rotor hub usually must first be secured in order to be able to remove the conical supports
Also, it is not simple to change or modify the cone angle of this type of support to gain more flexibility with respect to the overall design conditions of the system and possible wind actions

Method used

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Embodiment Construction

[0017] The invention therefore relates to a oscillating support (9) comprising an inner bushing (10) and a surrounding outer bushing (11) capable of accommodating an oscillating shaft (3) for the oscillating support, The outer bushing (11) is connected to the inner bushing (10) and comprises a pretensionable elastic element (4) in the form of a multilayer spring consisting of a flat elastic layer and a flat non- Elastic interlayer construction, wherein the elastic elements used are at least four multilayer springs (4), preferably four to eight multilayer springs, having a circular or oval basic shape. Said elastic element (4) inside the outer bushing (11) is arranged radially around the inner bushing (10) and has a pretensioning device (12) via a multilayer spring (4) Preload the outer and inner bushings relative to each other. This pretension thus makes it possible to adjust and vary the thickness of the elastic multi-layer spring and thus the pretension independently of one...

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Abstract

The invention relates to a self-aligning bearing preferably for use in wind power plants, said self-aligning bearing being constructed from elastic, in particular conical multi-layered spring elements, the stiffness behaviour of which can optionally be varied by hydraulic devices and which are arranged structurally in the region of the rotor hub, such that as a result they are highly suitable both for adjusting the rotor blades and for reducing undesired forces transmitted to the plant by the rotor blades. In particular, the self-aligning bearings according to the invention are suitable for use in wind power plants having one- or two-bladed rotors.

Description

technical field [0001] The invention relates to a pivoting support consisting of elastic, in particular conical, but also cylindrical ellipsoidal, multilayer spring elements whose stiffness properties can be selectively changed by means of hydraulic means and in which The structural components are arranged in the region of the rotor hub or the main shaft of the wind turbine. This type of bearing is therefore suitable for adjusting the rotor blades and for reducing undesired forces transmitted by the rotor blades to the turbomachine. The oscillating support according to the invention is suitable for use in single-blade, two-blade or multi-blade rotor wind turbines, preferably for turbines driven by two-blade rotors. However, the pendulum bearing according to the invention is also used in couplings and drive trains in ships and helicopters. Background technique [0002] In wind energy turbines, especially in wind energy turbines using two-blade rotors instead of conventional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/08F03D11/00F16F1/40
CPCY02E10/723Y02E10/722F05B2240/50F03D11/0008F03D7/0204F16F1/40F16F15/08Y02E10/72F16C2360/31F03D80/70F03D1/0658F16C27/02F16C27/063
Inventor F·米奇S·格兰茨纳K-H·哈纳斯
Owner ESM ENERGIE UND SCHWINGUNGSTECHN MITSCH GMBH
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