CN211343766U

CN211343766U - Shaft system of wind generating set

Info

Publication number: CN211343766U
Application number: CN201922318032.7U
Authority: CN
Inventors: 赵静波
Original assignee: Minol Renee Beijing Technology Co ltd
Current assignee: GUOHUA (HEBEI) NEW ENERGY Co.,Ltd.
Priority date: 2019-12-22
Filing date: 2019-12-22
Publication date: 2020-08-25
Anticipated expiration: 2029-12-22

Abstract

The utility model relates to a wind generating set's axle system, including double-row tapered roller bearing, cylindrical roller bearing, moving axis and mounting, the moving axis middle part outside is provided with the mounting, keep away from in the mounting wheel hub one end is provided with double-row tapered roller bearing, be close to in the mounting wheel hub one end is provided with cylindrical roller bearing, double-row tapered roller bearing is including prostate roller, back row roller, bearing inner circle and bearing inner race, cylindrical roller bearing is including outer lane, inner circle and cylindrical roller. Has the advantages that: the asymmetrical double-row roller bearing distribution can effectively avoid the phenomena of overload, heating, slipping and the like of two rows of rollers, and the service life of the bearing is prolonged; the shafting is fixed in the fixing piece, so that the radial deformation of the whole shafting can be controlled, the influence on the air gap of the generator is reduced, the size of the rear bearing can be reduced by extending the shafting to the cabin side, the weight of the rear bearing can be controlled, and the cost of the bearing can be reduced.

Description

Shaft system of wind generating set

Technical Field

The utility model relates to a relevant technical field of aerogenerator particularly, relates to a wind generating set's axle system.

Background

Generally, shafting selection is an important link in the design of a main shafting of a wind generating set, and aiming at the design of different types of main shafting and the selection of proper bearing types, the shafting performance and service life can be improved to a large extent, the manufacturing and assembling cost is reduced, and the operation and maintenance times and cost are reduced.

At present, the common shafting layout modes mainly include a combination of a double-row tapered roller bearing and a cylindrical roller bearing, a combination of a tapered roller bearing and a tapered roller bearing, a double-row tapered roller bearing and the like, wherein the double-row tapered roller bearing is widely applied due to the advantages of higher bearing rigidity, good bending moment load resistance, compact structure, fewer parts and the like, and accordingly, the shaft system of the wind generating set is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind generating set's axle system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wind generating set's axle system, is including biserial tapered roller bearing, cylindrical roller bearing, moving axis and mounting, moving axis one end welded fastening has wheel hub, the moving axis middle part outside is provided with the mounting, keep away from in the mounting wheel hub one end is provided with biserial tapered roller bearing, be close to in the mounting wheel hub one end is provided with cylindrical roller bearing, be close to in the moving axis wheel hub one end welded fastening has the driving disk, biserial tapered roller bearing is including leading row roller, back row roller, bearing inner circle and bearing outer lane, bearing inner circle welded fastening is in the moving axis, bearing outer lane welded fastening is in on the mounting, the bearing inner circle with movable joint is fixed with between the bearing outer lane leading row roller with back row roller, cylindrical roller bearing is including outer lane, an inner ring and a cylindrical roller.

Furthermore, the double-row tapered roller bearing and the cylindrical roller bearing are movably clamped and fixed between the moving shaft and the fixing piece.

Furthermore, the outer ring is welded and fixed on the fixing piece, the inner ring is welded and fixed on the moving shaft, and the cylindrical roller is movably clamped and connected between the inner ring and the outer ring.

Furthermore, a first maintenance door is arranged on one side of the hub on the fixing piece.

Furthermore, a second maintenance door consistent with the first maintenance door is arranged on one side of the movable disc in the fixing piece.

Furthermore, the included angles between the front row rollers and the rear row rollers and the movable shaft are different.

Furthermore, one end, far away from the hub, of the moving shaft is fixedly welded with a connecting sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has: the distribution of the installed asymmetric double-row roller bearings can effectively avoid the phenomena of overload, heating, slipping and the like of the two rows of rollers, and the service life of the bearings is prolonged; through fixing the shafting in the mounting, can control the radial deformation of whole shafting, reduce the influence to the generator air gap to can reduce the rear bearing size to the cabin side extension of shafting, be favorable to controlling rear bearing weight, reduce bearing cost, the first dimension door and the second dimension door of seting up provide convenience for the maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a shaft system of a wind turbine generator system according to the present invention;

fig. 2 is a schematic view of an internal structure of a shaft system of a wind turbine generator system according to the present invention;

fig. 3 is a schematic structural section view of a shaft system of a wind turbine generator system according to the present invention.

Reference numerals:

1. a double-row tapered roller bearing; 11. a prostate roller; 12. a rear row of rollers; 13. a bearing inner race; 14. A bearing outer race; 2. a cylindrical roller bearing; 21. an outer ring; 22. an inner ring; 23. a cylindrical roller; 3. a moving shaft; 31. a hub; 32. a movable plate; 33. a first maintenance door; 34. a connecting pipe; 4. a fixing member; 41. and (7) repairing the door in a second dimension.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, an axle system of a wind generating set according to the present invention includes a double-row tapered roller bearing 1, a cylindrical roller bearing 2, a moving axle 3 and a fixing member 4, wherein a hub 31 is welded and fixed at one end of the moving axle 3, the fixing member 4 is disposed outside the middle portion of the moving axle 3, the double-row tapered roller bearing 1 is disposed at one end of the fixing member 4 away from the hub 31, the cylindrical roller bearing 2 is disposed at one end of the fixing member 4 close to the hub 31, a movable disk 32 is welded and fixed at one end of the moving axle 3 close to the hub 31, the double-row tapered roller bearing 1 includes a front row roller 11, a rear row roller 12, a bearing inner ring 13 and a bearing outer ring 14, the bearing inner ring 13 is welded and fixed on the moving axle 3, the bearing outer ring 14 is welded and fixed on the fixing, the movable clamping between the bearing inner ring 13 and the bearing outer ring 14 is fixed with the front row rollers 11 and the rear row rollers 12, and the cylindrical roller bearing 2 comprises an outer ring 21, an inner ring 22 and cylindrical rollers 23.

The double-row tapered roller bearing 1 and the cylindrical roller bearing 2 are movably clamped and fixed between the moving shaft 3 and the fixing piece 4 and rotate stably.

The outer ring 21 is welded and fixed on the fixing piece 4, the inner ring 22 is welded and fixed on the moving shaft 3, the inner ring 22 and the outer ring 21 are movably clamped and fixed with the cylindrical rollers 23, and therefore the cylindrical roller bearing 2 is stable in operation.

Wherein, the fixing piece 4 is originally provided with a first maintenance door 33 at one side of the wheel hub 31 for maintenance.

Wherein, a second maintenance door 41 consistent with the first maintenance door 33 is arranged on one side of the movable disc 32 in the fixing member 4, so as to facilitate later maintenance.

The included angles between the front row rollers 11 and the rear row rollers 12 and the moving shaft 3 are different, so that the sliding is not easy to occur, and the structure is stable.

And a connecting sleeve 34 is fixedly welded at one end of the moving shaft 3, which is far away from the hub 31, and is connected with the outside.

Principle of operation

Through the above technical scheme of the utility model, a wind generating set's axle system, use moving axis 3 to fix under double-row tapered roller bearing 1 and cylinder roll word bearing 2's effect in service, in operation because leading row's roller 11 and back row roller 12 in double-row tapered roller bearing 1 are asymmetric installation fixed, the effect that can not skid is played in mounting 4 to moving axis 3, whole use is firm, install the entering of staff when first dimension door 33 and second dimension door 41 on mounting 4 and driving disk 32 conveniently break down and need the maintenance, there is wheel hub 31 side to begin the transmission at load, because the change of wind potential, the not equidimension load is born to the different parts of moving axis 3, will bear bigger load to double-row tapered roller bearing 1 generally speaking, asymmetric bearing structure can bear great load, leading row's roller 11 that avoids probably appearing in the symmetric bearing bears too big load, The local load requirement is not met, and the phenomenon that the rear-row rollers 12 are large and small in size and even slip is good in adaptability to unstable and sudden local loads.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The shaft system of the wind generating set comprises a double-row tapered roller bearing (1), a cylindrical roller bearing (2), a moving shaft (3) and a fixing piece (4), and is characterized in that one end of the moving shaft (3) is welded and fixed with a wheel hub (31), the fixing piece (4) is arranged on the outer side of the middle part of the moving shaft (3), one end of the fixing piece (4) far away from the wheel hub (31) is provided with the double-row tapered roller bearing (1), one end of the fixing piece (4) close to the wheel hub (31) is provided with the cylindrical roller bearing (2), one end of the moving shaft (3) close to the wheel hub (31) is welded and fixed with a movable disc (32), the double-row tapered roller bearing (1) comprises a front row roller (11), a rear row roller (12), a bearing inner ring (13) and a bearing outer ring (14), and the bearing inner ring (13) is welded and, bearing inner race (14) welded fastening be in on mounting (4), bearing inner race (13) with movable joint is fixed with between bearing inner race (14) leading row roller (11) with back row roller (12), cylindrical roller bearing (2) are including outer lane (21), inner circle (22) and cylindrical roller (23).

2. The shaft system of a wind generating set according to claim 1, characterized in that the double-row tapered roller bearing (1) and the cylindrical roller bearing (2) are movably clamped and fixed between the moving shaft (3) and the fixing member (4).

3. The shaft system of a wind generating set according to claim 1, characterized in that the outer ring (21) is welded and fixed on the fixing member (4), the inner ring (22) is welded and fixed on the moving shaft (3), and the cylindrical rollers (23) are movably clamped and fixed between the inner ring (22) and the outer ring (21).

4. The shaft system of a wind turbine generator system according to claim 1, wherein the fixing member (4) is provided with a first maintenance door (33) on the side of the hub (31).

5. The shaft system of a wind turbine generator system according to claim 1, wherein a second maintenance door (41) corresponding to the first maintenance door (33) is provided in the stationary member (4) on one side of the movable plate (32).

6. Shaft system of a wind power plant according to claim 1, characterised in that the front row of rollers (11) and the rear row of rollers (12) have different angles to the moving shaft (3).

7. Shaft system of a wind power plant according to claim 1, characterised in that a connection sleeve (34) is welded to the end of the moving shaft (3) remote from the hub (31).