CN205277724U - Location structure and aerogenerator of base bearing - Google Patents

Abstract

The utility model provides a location structure and aerogenerator of base bearing, the location structure of this base bearing includes the main shaft, the suit is at main epaxial bearing, holding ring and the solid part of card, the holding ring suit is on the main shaft, and the butt is on bearing inner race's terminal surface, the surface of main shaft is provided with first recess along circumference, be provided with the second recess along circumference on the inner wall of holding ring, first recess and second recess correspond and the common annular location space of circle that forms each other, the solid part setting of card is in the space of location, with solid on the main shaft with the holding ring card. The location structure of this base bearing can reliably fix a position the bearing, has avoided the bearing axial displacement to appear, has improved the security of operation.

Description

The locating structure of main bearing babbitting jig and aerogenerator

Technical field

The utility model relates to technical field of wind power generation, in particular to locating structure and the aerogenerator of a kind of main bearing babbitting jig.

Background technology

At present, the axial location of the main shaft rear bearing of aerogenerator adopts the locator means of shrink-fit usually, concrete way is, rear bearing impeller side direction on main shaft, suit retaining ring, coordinating between this retaining ring with main shaft is shrink-fit, and is connected on the inner ring of rear bearing so that rear bearing is carried out axial location.

When under particular rack load, there will be the frictional force that the axial force acting on rear bearing inner ring is greater than retaining ring shrink-fit, the axis of rear bearing inner ring is caused to alter, and then there will be the contact of rolling body and inner ring rib, and cause the fracture of inner ring rib, losing the function of support stator and rotor time serious, cause the contact friction of coil and magnet steel, generator damages.

Practical novel content

The purpose of this utility model is to provide locating structure and the aerogenerator of a kind of main bearing babbitting jig, reliably to be located by bearing, and avoids bearing axial displacement occur.

For achieving the above object, the exemplary embodiment of the utility model provides the locating structure of a kind of main bearing babbitting jig, bearing, retaining ring and the fixing parts comprise main shaft, being sleeved on described main shaft; Described retaining ring is sleeved on described main shaft, and it is connected on the end face of described bearing inner ring, the surface of described main shaft is circumferentially provided with the first groove, the inwall of described retaining ring is circumferentially provided with the 2nd groove, described first groove and described 2nd groove are mutually corresponding and jointly form the space, location of annular, described fixing parts are arranged in space, described location, to be fixed on described main shaft by described retaining ring.

Can selection of land, the material of described fixing parts is resilient material.

Can selection of land, described fixing parts are annular, and its cross-sectional shape is the V-shaped laterally placed.

Can selection of land, described fixing parts comprise at least two arc sections, and at least two described arc sections connect and compose the entirety of circular arc successively.

Can selection of land, described fixing parts are that external diameter is greater than described retaining ring internal diameter and internal diameter is less than the major arc shape of diameter of described main shaft.

Can selection of land, the end side in the interior hole of described retaining ring is provided with chamfering.

The utility model additionally provides a kind of aerogenerator, has the locating structure of the main bearing babbitting jig of above any technology feature.

Described fixing parts are arranged in space, described location by adopting for the locating structure of main bearing babbitting jig of the present utility model and the aerogenerator with this locating structure, with the technical scheme that described retaining ring is fixed on described main shaft, can described retaining ring be securely fixed on described main shaft, and then ensure that the reliability that described bearing is located by described retaining ring, efficiently avoid bearing axial displacement occurs, it is to increase the security run.

Accompanying drawing explanation

Fig. 1 is the partial cutaway schematic of locating structure one embodiment of main bearing babbitting jig of the present utility model;

Fig. 2 be in Fig. 1 main shaft partial cutaway schematic;

Fig. 3 is the partial cutaway schematic of retaining ring in Fig. 1;

Fig. 4 is the partial cutaway schematic fixing the first optional mode of parts in Fig. 1;

Fig. 5 is the schematic diagram fixing parts the 2nd kind of optional mode in Fig. 1;

Wherein: 1-main shaft; 11-first groove; 2-bearing; 3-retaining ring; 31-the 2nd groove; 32-chamfering; 4-fixes parts; 41-opening.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the locating structure of main bearing babbitting jig of the present utility model and aerogenerator are further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the utility model, and it is not used in restriction the utility model.

As shown in Figure 1 and Figure 2 and Figure 3, bearing 2, retaining ring 3 and fixing parts 4 that the locating structure of a kind of main bearing babbitting jig comprises main shaft 1, is sleeved on main shaft 1, retaining ring 3 is sleeved on main shaft 1, and it is connected on the end face of bearing 2 inner ring, the surface of main shaft 1 is circumferentially provided with the first groove 11, the inwall of retaining ring 3 is circumferentially provided with the 2nd groove 31, first groove 11 and the 2nd groove 31 are mutually corresponding and jointly form the space, location of annular, fixing parts 4 is arranged in space, location, to be fixed on main shaft 1 by retaining ring 3.

Wherein, the material fixing parts 4 is resilient material, such as, fixes parts 4 and spring steel can be adopted to make, like this, when assembling, can first fixing parts 4 be placed in the first groove 11, when assembling and positioning ring 3, by the extruding of retaining ring 3, make fixing parts 4 occur that elasticity is out of shape, state of nature can be recovered when fixing parts 4 and enter completely in the 2nd groove 31, and then retaining ring 3 is fixed on main shaft 1. More preferably, the end side in the interior hole of retaining ring 3 is provided with chamfering 32, like this in the assembling process of retaining ring 3, it is possible to is guided by fixing parts 4 by chamfering 32, brings conveniently to assembly work.

By fixing parts 4 are arranged on the space, location being jointly made up of the first groove 11 and the 2nd groove 31, can retaining ring 3 be fixed on main shaft 1, prevent it from along the axis of main shaft 1, displacement occurring, and then improve retaining ring 3 to the reliability of bearing 2 inner ring axial location, avoid the damage that bearing 2 inner ring causes bearing 2 because there is axial displacement, it is to increase operating safety.

Hereinafter the optional mode fixing parts 4 is carried out detail:

The first optional mode, as shown in Figure 4, fixing parts 4 is annular, and its cross-sectional shape is the V-shaped laterally placed. Cross-sectional shape described here is that the V-shaped laterally placed refers to, fixes and has opening 41 on the cross section of parts 4, and opening direction is identical with the axis direction fixing parts 4. Like this when retaining ring 3 assembles, by making opening 41 diminish the extruding fixing parts 4, when fixing parts 4 enter in the 2nd groove 31 of retaining ring 3 completely, opening 41 returns to original state, namely fixes parts 4 and returns to original state. It should be noted that, the cross section fixing parts 4 can also be the shapes such as Z font.

Can selection of land, be annular owing to fixing parts 4, it can comprise at least two arc sections (not shown go out), and at least two arc sections connect and compose the entirety of circular arc successively. So more be conducive to overlapping fixing parts 4 in the first groove 11 installing on main shaft 1.

2nd kind of optional mode, as shown in Figure 5, fixing parts 4 can be the shape adopting spring steel to be made into is major arc shape, and is set in the first groove 11 on main shaft 1. When retaining ring 3 assembles, by making it be out of shape the extruding fixing parts 4. When fixing parts 4 enter in the 2nd groove 31 of retaining ring 3 completely, return to original state. It should be noted that, fix parts 4 and it is greater than retaining ring 3 internal diameter for external diameter and internal diameter is less than the diameter of main shaft 1, parts 4 can be prevented from fixing like this and it is less than retaining ring 3 internal diameter for external diameter or internal diameter is greater than the diameter of main shaft 1, and deviate from from the 2nd groove 31 or the first groove 11, and then lose the fixing effect to retaining ring 3.

The utility model additionally provides a kind of aerogenerator, and this aerogenerator has the locating structure of the main bearing babbitting jig described by above embodiment.

Bearing can reliably be located by the locating structure of the main bearing babbitting jig that the utility model embodiment provides and aerogenerator, avoids bearing axial displacement occur, thus improves the security of operation.

Above embodiment only have expressed several enforcement mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model patent scope. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the concept of the premise utility these all belong to protection domain of the present utility model. Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (7)

1. the locating structure of a main bearing babbitting jig, it is characterised in that, bearing (2), retaining ring (3) and fixing parts (4) comprise main shaft (1), being sleeved on described main shaft (1);

Described retaining ring (3) is sleeved on described main shaft (1), and it is connected on the end face of described bearing (2) inner ring, the surface of described main shaft (1) is circumferentially provided with the first groove (11), the inwall of described retaining ring (3) is circumferentially provided with the 2nd groove (31), described first groove (11) and described 2nd groove (31) are mutually corresponding and jointly form the space, location of annular, described fixing parts (4) are arranged in space, described location, and described retaining ring (3) is fixed on described main shaft (1).

2. the locating structure of main bearing babbitting jig according to claim 1, it is characterised in that, the material of described fixing parts (4) is resilient material.

3. the locating structure of main bearing babbitting jig according to claim 2, it is characterised in that, described fixing parts (4) are annular, and its cross-sectional shape is the V-shaped laterally placed.

4. the locating structure of main bearing babbitting jig according to claim 3, it is characterised in that, described fixing parts (4) comprise at least two arc sections, and at least two described arc sections connect and compose the entirety of circular arc successively.

5. the locating structure of main bearing babbitting jig according to claim 2, it is characterised in that, for external diameter is greater than, described retaining ring (3) internal diameter and internal diameter are less than the major arc shape of the diameter of described main shaft (1) to described fixing parts (4).

6. the locating structure of main bearing babbitting jig according to claim 2, it is characterised in that, the end side in the interior hole of described retaining ring (3) is provided with chamfering (32).

7. an aerogenerator, it is characterised in that, there is the locating structure of the main bearing babbitting jig as described in claim 1 to 6 any one.