CN102723803B

CN102723803B - Novel wind driven generator bearing structure

Info

Publication number: CN102723803B
Application number: CN201210212731.3A
Authority: CN
Inventors: 李为林; 曾县荣; 姚杰
Original assignee: Dec Leshan New Energy Equipment Co ltd
Current assignee: Dec Leshan New Energy Equipment Co ltd
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2014-04-02
Anticipated expiration: 2032-06-26
Also published as: CN102723803A

Abstract

The invention discloses a novel wind driven generator bearing structure comprising bearings, a bearing seat (3), a bearing outer cover (6) and a bearing inner cover (14), wherein a lubricating oil channel A (15) is arranged on the bearing outer cover (6); the bearing seat (3) is provided with a lubricating oil channel B (16) and a lubricating oil distributing channel (19); the bearing inner cover (14) is internally provided with a cavity (17); the lubricating oil channel B (16) is communicated with the lubricating oil channel A (15) and the cavity (17); a lubricating oil channel C (18) is arranged inside a bearing outer baffle ring (10); one end of the lubricating oil distributing channel (19) is communicated with the lubricating oil channel B (16); and the other end of the lubricating oil distributing channel (19) is communicated with the lubricating oil channel C (18). The novel wind driven generator bearing structure has the beneficial effects that two independent oil paths are arranged so that each one of the two bearings is respectively provided with one independent oil path and the simultaneous lubrication of the two bearings is realized; and oil is uniformly distributed so that the service life of the bearings is prolonged and the maintenance cost is reduced.

Description

A kind of novel wind generator bearing arrangement

Technical field

The present invention relates to technical field of wind power generating equipment, particularly a kind of novel wind generator bearing arrangement.

Background technology

It is aerial that wind-driven generator is arranged on the height of tens meters, its lifting and change very inconvenience, and cost is expensive, therefore the bearing life of wind-driven generator and reliability is had to very high requirement.

The bearing of wind-driven generator requires high accuracy, low vibration, low noise, and dynamo bearing is the state in continuous high speed work again, thereby the reasonability of construction design of journal bearings is most important.So when construction design of journal bearings; it is unreasonable that structural member assembly precision is selected, and it is unreasonable that bearing insulation structure designs, and it is unreasonable that lubrication system designs; all will directly affect the use of bearing, finally bring maintenance work series of complex, expensive of shutting down generation because of generator failure.

In generator operation process, greasing amount is too high or too low all can produce harmful effect to bearing, the statistics of JuFAG Chinese companies, and 36% bearing failure results from insufficient lubrication.When traditional single loop oil circuit lubricates duplex bearing in wind-driven generator, there is the problems such as grease maldistribution that cause due to two bearings position relationship.

Summary of the invention

The object of the invention is to overcome the shortcoming of prior art, a kind of novel wind generator bearing arrangement of grease distributed uniform is provided.

Object of the present invention is achieved through the following technical solutions: a kind of novel wind generator bearing arrangement, it comprises the bearing on the stiff end that is installed on motor shaft, be socketed in bearing pedestal outside bearing and bearing end cover and the internal bearing cover at installation and bearing pedestal two ends, bearing pedestal is fixed on electric motor end cap by set bolt, between electric motor end cap and bearing pedestal, be provided with insulated ring, between described bearing and bearing end cover, edge direction from outside to inside is also provided with shaft block ring and back-up ring successively, the inner ring of bearing is fixed on motor shaft by shaft block ring and back-up ring, the outer ring of bearing is fixed in bearing pedestal by internal bearing cover, bearing comprises cylinder roller bearing and the deep groove ball bearing that is installed on side by side motor shaft stiff end, and between cylinder roller bearing and deep groove ball bearing, be provided with the outer back-up ring of bearing inner shield ring and bearing, bearing end cover inside is provided with oil leab A, bearing pedestal is provided with oil leab B, is provided with cavity in internal bearing cover, and oil leab B is communicated with oil leab A and cavity, the end face of deep groove ball bearing is positioned at cavity, and bearing end cover is provided with the pouring orifice being communicated with oil leab A.

The described outer back-up ring of bearing inside is provided with oil leab C, is also provided with lubricated minute oil duct in bearing pedestal, and lubricated minute oil duct one end is communicated with oil leab B, and the lubricated minute oil duct other end is communicated with oil leab C, and the other end of oil leab C is communicated with the end face of cylinder roller bearing.

The present invention has the following advantages: the present invention in duplex bearing outer setting two independent oil paths, solved that existing structure exists because two bearings installation site relation causes the problem of grease maldistribution etc., make two bearings there is respectively an independent oil path, realization is lubricated to two bearings time, and grease distributed uniform, thereby extended the useful life of bearing, reduced maintenance cost.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention

In figure, 1-electric motor end cap, 2-insulated ring, 3-bearing pedestal, 4-set bolt, 5-pouring orifice, 6-bearing end cover, 7-shaft block ring, 8-back-up ring, 9-cylinder roller bearing, the outer back-up ring of 10-bearing, 11-bearing inner shield ring, 12-deep groove ball bearing, 13-motor shaft, 14-internal bearing cover, 15-oil leab A, 16-oil leab B, 17-cavity, 18-oil leab C, the lubricated minute oil duct of 19-.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described:

As shown in Figure 1, a kind of novel wind generator bearing arrangement, it comprises the bearing on the stiff end that is installed on motor shaft 13, be socketed in bearing pedestal 3 outside bearing and bearing end cover 6 and the internal bearing cover 14 at installation and bearing pedestal 3 two ends, bearing pedestal 3 is fixed on electric motor end cap 1 by set bolt 4, between electric motor end cap 1 and bearing pedestal 3, be provided with insulated ring 2, between described bearing and bearing end cover 6, edge direction from outside to inside is also provided with shaft block ring 7 and back-up ring 8 successively, the inner ring of bearing is fixed on motor shaft 13 by shaft block ring 7 and back-up ring 8, the outer ring of bearing is fixed in bearing pedestal 3 by internal bearing cover 14, bearing comprises cylinder roller bearing 9 and the deep groove ball bearing 12 that is installed on side by side motor shaft 13 stiff ends, and 12 of cylinder roller bearing 9 and deep groove ball bearings are provided with bearing inner shield ring 11 and the outer back-up ring 10 of bearing, 3 of back-up ring 8 and bearing pedestals, all there is gap in 6 of shaft block ring 7 and bearing end covers.

Described bearing end cover 6 inside are provided with oil leab A15, bearing pedestal 3 is provided with oil leab B16, in internal bearing cover 14, be provided with cavity 17, oil leab B16 is communicated with oil leab A15 and cavity 17, the end face of deep groove ball bearing 12 is positioned at cavity 17, bearing end cover 6 is provided with the pouring orifice 5 being communicated with oil leab A15, the inner ring of the end face of internal bearing cover 14 and bearing pedestal 3 and deep groove ball bearing 12 and outer ring are and closely cooperate, thereby make cavity 17 become the airtight passage that is communicated with oil leab B16 and deep groove ball bearing 12.

Bearing end cover 6 is close-fitting two planes with the contact-making surface of bearing pedestal 3, and oil leab A15 and oil leab B16 are positioned at the same correspondence position of two planes, thereby realize fitted seal, is communicated with, and forms airtight passage.

The described outer back-up ring of bearing 10 inside are provided with oil leab C18, in bearing pedestal 3, be also provided with lubricated minute oil duct 19, lubricated minute oil duct 19 one end are communicated with oil leab B16, lubricated minute oil duct 19 other ends are communicated with oil leab C18, the other end of oil leab C18 is communicated with the end face of cylinder roller bearing 9, outer back-up ring 10 outer walls of bearing and bearing pedestal 3 inwalls closely cooperate, thereby make oil leab C18 and lubricated minute oil duct 19 close communication, the lubricating oil realization that oil leab C18 flows out is lubricated to cylindrical roller axle, and grease is finally all discharged through bearing end cover 6 bottoms.

The course of work of the present invention is as follows: from pouring orifice 5, inject grease, grease passes through the oil leab A15 in bearing end cover 6 successively, oil leab B16 in bearing pedestal 3, cavity 17 in internal bearing cover 14 contacts with deep groove ball bearing 12, by deep groove ball bearing 12, contact with needle bearing again, simultaneously, grease in oil leab B16 also contacts with cylinder roller bearing 9 by the oil leab C18 in the outer back-up ring 10 of lubricated minute oil duct 19 and bearing successively, realization is lubricated to cylinder roller bearing 9, grease can be contacted with needle bearing more quickly, and can distribute more equably grease.

Claims

1. a novel wind generator bearing arrangement, it comprises the bearing on the stiff end that is installed on motor shaft (13), be socketed in bearing pedestal (3) outside bearing and bearing end cover (6) and the internal bearing cover (14) at installation and bearing pedestal (3) two ends, bearing pedestal (3) is fixed on electric motor end cap (1) by set bolt (4), between electric motor end cap (1) and bearing pedestal (3), be provided with insulated ring (2), it is characterized in that: between described bearing and bearing end cover (6), edge direction from outside to inside is also provided with shaft block ring (7) and back-up ring (8) successively, the inner ring of bearing is fixed on motor shaft (13) by shaft block ring (7) and back-up ring (8), the outer ring of bearing is fixed in bearing pedestal (3) by internal bearing cover (14), bearing comprises cylinder roller bearing (9) and the deep groove ball bearing (12) that is installed on side by side motor shaft (13) stiff end, and between cylinder roller bearing (9) and deep groove ball bearing (12), be provided with the outer back-up ring (10) of bearing inner shield ring (11) and bearing, bearing end cover (6) inside is provided with oil leab A(15), bearing pedestal (3) is provided with oil leab B(16), in internal bearing cover (14), be provided with cavity (17), oil leab B(16) be communicated with oil leab A(15) and cavity (17), the end face of deep groove ball bearing (12) is positioned at cavity (17), and bearing end cover (6) is provided with and oil leab A(15) pouring orifice (5) that is communicated with,

The described outer back-up ring (10) of bearing inside is provided with oil leab C(18), in bearing pedestal (3), be also provided with lubricated minute oil duct (19), lubricated minute oil duct (19) one end is communicated with oil leab B(16), lubricated minute oil duct (19) other end connection oil leab C(18), other end oil leab C(18) is communicated with the end face of cylinder roller bearing (9).