CN217055967U

CN217055967U - Anti-rotation shaft locking bearing component for wind driven generator

Info

Publication number: CN217055967U
Application number: CN202220377789.2U
Authority: CN
Inventors: 鲁学良; 张亚宾; 朱杰; 杨志; 潘鸿; 周少华
Original assignee: Hunan Chongde Technology Co ltd
Current assignee: Hunan Chongde Technology Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-07-26
Anticipated expiration: 2032-02-24

Abstract

The utility model provides a prevent dead bearing part of dead locking of commentaries on classics axle for aerogenerator, including bearing body, a plurality of radial tiles and multiunit spacing regulating unit, wherein, a plurality of radial tiles along the inboard circumference interval arrangement of bearing body, be located the bearing body lower half radial tile with the bearing body contact, be located the bearing body upper half radial tile with leave the dead regulation clearance of preventing the dead locking of commentaries on classics axle between the bearing body; the adjusting gap is kept unchanged through the limiting adjusting unit arranged between the radial bush and the bearing body when the rotating shaft works normally, and the adjusting gap is reduced when the rotating shaft expands to be in contact with the radial bush. The utility model has the advantages of can effectively prevent the pivot locking, and guarantee bearing capacity etc.

Description

Bearing part for anti-rotation shaft locking wind driven generator

Technical Field

The utility model relates to a wind power generation field especially relates to a prevent bearing part for aerogenerator that commentaries on classics axle locking.

Background

The rolling bearing for the wind driven generator is an important supporting component of the wind driven generator, potential difference is easily generated near the rolling bearing due to balance, air gap, load, friction, lines and the like in the running process of the generator, the rolling bearing can connect a rotor and a stator of the generator to form a current loop, and when current discharges through the rolling bearing, electric corrosion is easily generated on an inner rolling channel and an outer rolling channel of the rolling bearing and the rolling element, so that the rolling bearing is damaged, and the service life of the rolling bearing is influenced.

Meanwhile, the bearing component for the wind driven generator with the anti-rotation shaft locked usually needs to work under the condition that lubricating oil is not available or the lubricating oil is insufficient in oil supply, and at the moment, heat generated by friction between the rotation shaft and the bearing cannot be taken away through the lubricating oil, so that the heat is accumulated in the rotation shaft, and the rotation shaft is expanded. When the rotating shaft expands to a certain degree, the gap between the rotating shaft and the bearing is zero, and at the moment, the rotating shaft is locked by the bearing; simultaneously, the seizing shaft enables the friction surface of the rotating shaft and the bearing to be enlarged and the friction to generate heat more seriously, the temperature of the position of the bearing is further increased, the rotating shaft is further expanded, and at the moment, the seizing shaft phenomenon is more serious, so that the bearing is damaged, even the whole wind driven generator main shaft is damaged, and serious safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and can effectively prevent the pivot locking, and guarantee bearing capacity prevent the bearing part for aerogenerator that the pivot locking was locked.

In order to solve the technical problem, the utility model provides a technical scheme does:

a bearing component for an anti-rotation shaft locking wind driven generator comprises a bearing body, a plurality of radial tiles and a plurality of groups of limiting adjusting units, wherein the radial tiles are circumferentially arranged along the inner side of the bearing body at intervals, the radial tiles positioned at the lower half part of the bearing body are in contact with the bearing body, and an adjusting gap for preventing the anti-rotation shaft locking is reserved between the radial tiles positioned at the upper half part of the bearing body and the bearing body; the adjusting gap is kept unchanged through the limiting adjusting unit arranged between the radial tile and the bearing body when the rotating shaft normally works, and the adjusting gap is reduced when the rotating shaft expands to be in contact with the radial tile.

As a further improvement of the above technical solution:

the limiting and adjusting unit comprises an elastic adjusting piece and a pad limiting piece, and the elastic adjusting piece is arranged at the position of the adjusting gap in a compressed manner; the tile locating part is connected between the radial tile and the bearing body, and an avoiding groove for the radial tile to expand outwards is arranged between the tile locating part and the radial tile or the bearing body.

The elastic adjusting piece is a cylindrical spring; the bearing body and the radial tile are correspondingly provided with spring mounting grooves to form a spring placing area; the cylindrical spring is arranged in the spring placing area in a compressed manner.

The elastic adjusting piece is a belleville spring or an elastic plate, and is limited and installed at the adjusting gap through a positioning pin; the bearing body with radial tile corresponds and is provided with the locating pin mounting groove to form the locating pin and place the district.

The shoe limiting piece is a limiting screw, and the avoidance groove is formed in the bearing body or the radial shoe; when the avoiding groove is formed in the bearing body, the tail end of the limiting screw is in threaded connection with the radial tile; when the avoidance groove is formed in the radial tile, the tail end of the limiting screw is in threaded connection with the bearing body; the head end of the limit screw is in limit fit with the avoidance groove under the action of the elastic adjusting piece.

The number of the limiting screws of each group of limiting adjusting units is two, and the two limiting screws are respectively arranged on two sides of the elastic adjusting piece.

The relation between the adjusting clearance L and the diameter d of the rotating shaft is that L is more than or equal to 0.005d and less than or equal to 0.01 d.

The inner side surface of the radial tile is a radial bearing surface for bearing the radial load of the rotating shaft, and the radial bearing surface is provided with a first wear-resistant insulating layer; and a radial insulating layer is arranged on the outer side surface of the radial tile.

An aligning block for ensuring the radial bush to swing along with a rotating shaft in a self-adaptive manner and a swing limiting part for limiting the swing range of the radial bush are arranged between the radial bush positioned at the lower half part of the bearing body and the bearing body, wherein the aligning block is arranged on the radial bush, and an adjusting spherical surface in swing fit with the bearing body is arranged on the outer side of the aligning block; the swing limiting part is arranged between the centering block and the bearing body.

And a thrust bush is arranged between every two adjacent radial bushes and is arranged on the inner side end face of the bearing body, the outer end face of the thrust bush is an axial bearing face bearing the axial load of the rotating shaft, and the axial bearing face is provided with a second wear-resistant insulating layer.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses be provided with bearing body and a plurality of radial tile, a plurality of radial tile along the inboard circumference interval arrangement of bearing body, it adopts the antifriction bearing mode of bearing to change traditional aerogenerator into the slide bearing and bears, its compact structure has satisfied the demand of low weight, small volume when high-power aerogenerator; the split radial tile is convenient for forming and effective arrangement of the wear-resistant insulating layer while reliably bearing radial load of the rotating shaft, is convenient for maintenance and processing, and can isolate shaft current and avoid electric corrosion of the bearing due to effective arrangement of the wear-resistant insulating layer.

Meanwhile, because the lower half part of the bearing body is a bearing area of the rotating shaft, the radial tile positioned at the lower half part of the bearing body is contacted with the bearing body, so that the bearing can effectively bear the load of the rotating shaft, and the bearing capacity of the bearing part is ensured; the first one of bearing body is pivot non-bearing area, the utility model discloses leave the regulation clearance between radial tile that will be located first one of bearing body and the bearing body, adjust the clearance and keep unchangeable through spacing regulating unit at the normal during operation of pivot, adjust the clearance and expand to reduce when contacting with radial tile in the pivot, it makes the pivot have certain expansion space when the thermal expansion, effectively avoided the pivot because of the emergence of the pivot locking phenomenon that the thermal expansion of friction leads to, the life of bearing part has been improved, the safe and reliable operation of bearing part has been guaranteed. It can be seen that, the utility model discloses when guaranteeing bearing capacity, can effectively prevent the emergence of pivot locking phenomenon, guarantee bearing unit homoenergetic reliable safe operation when normal work and fuel cut-off operating mode.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic perspective view of embodiment 1 of the present invention.

Fig. 2 is a front view of embodiment 1 of the present invention.

Fig. 3 is a sectional view of section a-a of fig. 2.

Fig. 4 is a sectional view of the B-B section of fig. 3.

Fig. 5 is an enlarged schematic view of the portion C of fig. 3.

Fig. 6 is another schematic perspective view of the present invention.

Fig. 7 is a front view of fig. 6.

Fig. 8 is a sectional view of the section C-C of fig. 7.

Fig. 9 is a cross-sectional view of section D-D of fig. 8.

Fig. 10 is a front sectional view of embodiment 2 of the present invention.

The reference numerals in the figures denote:

1. a bearing body; 2. a radial tile; 21. a first wear-resistant insulating layer; 22. a radial insulating layer; 3. a limit adjusting unit; 31. an elastic adjustment member; 311. a cylindrical spring; 312. a belleville spring; 32. a pad limiting member; 321. a limit screw; 33. an avoidance groove; 34. a spring placement area; 35. positioning pins; 36. a locating pin placement area; 4. adjusting the clearance; 5. a centering block; 51. adjusting the spherical surface; 6. a swing limiting member; 7. a thrust pad; 71. a second wear-resistant insulating layer; 8. and a bearing body shell.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific examples, but the scope of the present invention is not limited thereto.

Example 1

Fig. 1 to 4 show an embodiment of a bearing component for a wind driven generator with an anti-rotation shaft locked, which is arranged between a rotation shaft and a bearing seat and used for supporting the rotation shaft and parts between the rotation shafts in normal operation. The bearing component for the wind driven generator for preventing the locking of the rotating shaft comprises a bearing body 1, a plurality of radial tiles 2 and a plurality of groups of limiting and adjusting units 3. The radial pads 2 are circumferentially arranged along the inner side of the bearing body 1 at intervals, and the radial pads 2 can bear the radial load of the rotating shaft to ensure the rotating precision of the rotating shaft; the limit adjusting unit 3 is arranged between the radial bush 2 positioned at the upper half part of the bearing body 1 and the bearing body 1 so as to control and adjust the radial position of the radial bush 2. In the embodiment, the radial bush 2 positioned at the lower half part of the bearing body 1 is contacted with the bearing body 1; an adjusting gap 4 is reserved between the radial bush 2 positioned at the upper half part of the bearing body 1 and the bearing body 1, the adjusting gap 4 is kept unchanged through the limiting adjusting unit 3 when the rotating shaft normally works, and the adjusting gap 4 is reduced when the rotating shaft expands to be in contact with the radial bush 2.

The utility model is provided with a bearing body 1 and a plurality of radial tiles 2, the radial tiles 2 are arranged along the inner side of the bearing body 1 at intervals in the circumferential direction, which changes the traditional wind driven generator adopting the rolling bearing mode into the sliding bearing mode, has compact structure and meets the requirements of low weight and small volume of the wind driven generator under high power; the split radial tile 2 can reliably bear the radial load of the rotating shaft, meanwhile, the forming and the effective arrangement of the wear-resistant insulating layer are facilitated, the maintenance and the processing are facilitated, and the effective arrangement of the wear-resistant insulating layer can isolate shaft current and avoid the occurrence of the electric corrosion phenomenon of the bearing.

Simultaneously, because the lower half of bearing body 1 is pivot bearing area, the utility model discloses the radial tile 2 that will be located 1 lower half of bearing body contacts with bearing body 1, and it can effectively bear pivot load, guarantees bearing member's bearing capacity. The first of bearing body 1 is pivot non-bearing area, the utility model discloses to be located and leave between the radial tile 2 of the first of bearing body 1 and the bearing body 1 and adjust clearance 4, adjust clearance 4 and keep unchangeable through spacing adjusting unit 3 at the normal during operation of pivot, adjust clearance 4 and reduce when the pivot inflation to with radial tile 2 contacts, it makes the pivot have certain expansion space when the thermal expansion, effectively avoided the pivot because of the locking phenomenon that the friction themogenesis inflation leads to, bearing life has been improved, the operation of bearing safe and reliable has been guaranteed. It can be seen that the utility model discloses when guaranteeing bearing capacity, can effectively prevent the emergence of pivot locking phenomenon for bearing unit homoenergetic safe operation when normal work and fuel cut-off operating mode.

As shown in fig. 4, the limit adjusting unit 3 includes an elastic adjusting member 31 and a pad limiting member 32. The elastic adjusting piece 31 is arranged at the position of the adjusting gap 4 in a compression shape, the elastic adjusting piece 31 is compressible when the rotating shaft expands, and at the moment, the radial tile 2 expands outwards to prevent the rotating shaft from being locked.

Meanwhile, the pad limiting member 32 is connected between the radial pad 2 and the bearing body 1 to limit the position of the radial pad 2 and prevent the radial pad 2 of the upper half from contacting and rubbing the rotating shaft. An avoiding groove 33 is arranged between the pad limiting part 32 and the bearing body 1, and the arrangement of the avoiding groove 33 provides a space for the radial pad 2 to expand outwards when the adjusting gap 4 is reduced. In other embodiments, the position of the avoiding groove 33 is only required to ensure that the radial tile 2 has an outward expansion space while being reliably limited, and the avoiding groove 33 may be arranged on the radial tile 2.

When the rotating shaft normally works, the tile limiting part 32 is in limiting fit with the avoiding groove 33 under the action of the elastic adjusting part 31 to fix the position of the radial tile 2, at the moment, the radial tile 2 keeps a certain gap with the rotating shaft, so that the phenomenon that the rotating shaft rotating freedom degree is large due to the fact that the gap between the radial tile 2 and the rotating shaft is too large is avoided, and the safe operation of the rotating shaft in normal work is ensured. When the oil is cut off, the rotating shaft expands due to heat generated by friction, when the rotating shaft expands to contact with the radial tile 2 positioned on the upper half part of the bearing body 1, the radial tile 2 expands outwards, the adjusting gap 4 is reduced, and at the moment, the tile limiting piece 32 moves in the avoiding groove 33 to provide an expanding space of the radial tile 2.

In this embodiment, the elastic adjustment member 31 is a cylindrical spring 311. The bearing body 1 and the radial tile 2 are correspondingly provided with spring installation grooves to form a spring placing area 34; the cylindrical spring 311 is disposed in the spring receiving area 34 in a compressed state. The radial tile 2 is in a fixed state when the rotating shaft normally works, can be stably expanded when the rotating shaft expands, ensures that the bearing component can reliably and safely operate under normal working and oil-cut working conditions, and has the advantages of simple and compact structure and small occupied space.

As shown in fig. 4, the pad limiting member 32 is a limiting screw 321; dodge groove 33 and locate the periphery region of bearing body 1, bearing body 1 is equipped with the installation through-hole that supplies stop screw 321 to pass, dodges groove 33 and installation through-hole intercommunication. The tail end of the limit screw 321 sequentially penetrates through the avoiding groove 33 and the mounting through hole and then is in threaded connection with the radial tile 2; the head end of the limit screw 321 is in limit fit with the avoiding groove 33 under the action of the elastic adjusting piece 31 so as to effectively fix the position of the radial tile 2 when the rotating shaft normally works. In other embodiments, the avoiding groove 33 may also be provided on the radial tile 2, in which case, the tail end of the limit screw 321 is in threaded connection with the bearing body 1, and the head end of the limit screw 321 is in limit fit with the avoiding groove 33 under the action of the elastic adjusting member 31.

Furthermore, the number of the limiting screws 321 of each set of the limiting and adjusting unit 3 is two, and the two limiting screws 321 are respectively arranged on two sides of the elastic adjusting part 31, so as to further ensure effective fixation and stable outward expansion of the radial tile 2. In this embodiment, the limiting screw 321 is an insulating screw to further isolate the shaft current.

Furthermore, the relation between the adjusting clearance 4L and the diameter d of the rotating shaft is that L is more than or equal to 0.005d and less than or equal to 0.01 d. The setting of the adjusting gap 4 can meet the requirement of the expansion amount of the rotating shaft when the rotating shaft is heated to expand, and the locking phenomenon of the rotating shaft is further avoided.

In this embodiment, the inner side surface of the radial tile 2 is a radial bearing surface for bearing the radial load of the rotating shaft, the radial bearing surface is provided with the first wear-resistant insulating layer 21 so as to effectively isolate the shaft current and avoid the occurrence of the bearing electric corrosion phenomenon, the radial tile 2 is arranged in a split manner, so that the first wear-resistant insulating layer 21 is conveniently formed and effectively arranged, the operability is high, and the processing and maintenance are convenient. The outer side surface of the radial tile 2 is provided with a radial insulating layer 22 to realize double insulation and further isolate the shaft current.

As shown in fig. 5, an aligning block 5 and a swing limiting member 6 are disposed between the radial shoe 2 located at the lower half of the bearing body 1 and the bearing body 1. Wherein, aligning block 5 is installed on radial tile 2, and the outside of aligning block 5 is equipped with adjusts sphere 51, adjusts sphere 51 and bearing body 1 swing cooperation, and it has guaranteed radial tile 2 along with pivot self-adaptation swing, when solving the oblique problem of load, the at utmost has reduced the bearing and has arranged the space. Meanwhile, a swing limiting member 6 is provided between the centering block 5 and the bearing body 1 to limit a swing range of the bearing body 1 while providing a swing space of the radial shoe 2.

In other embodiments, as shown in fig. 6 to 9, the radial shoe 2 located at the lower half of the bearing body 1 can also eliminate the arrangement of the centering block 5, and the swing adjusting structure is arranged outside the bearing body 1. Specifically, set up bearing body shell 8 outside bearing body 1, set up the swing regulating part between bearing body 1 and bearing body shell 8, bearing body 1 can be swung and installed in bearing body shell 8 through the swing regulating part to guarantee that bearing body 1 swings along with axis of rotation self-adaptation, effectively avoided the emergence of the eccentric wear that the load skew leads to, vibration and burning tile scheduling problem.

In this embodiment, a thrust pad 7 is disposed between adjacent radial pads 2, and the thrust pad 7 is disposed on an inner end surface of the bearing body 1 to bear an axial load of the rotating shaft and prevent the rotating shaft from moving axially. The thrust pad 7 and the radial pad 2 are combined to effectively bear the axial and radial loads of the rotating shaft, and meanwhile, the reasonable and compact layout of the load parts is realized.

Meanwhile, the outer end face of the thrust pad 7 is an axial bearing face for bearing the axial load of the rotating shaft, and the axial bearing face is provided with a second wear-resistant insulating layer 71 so as to effectively isolate shaft current and avoid the occurrence of electric corrosion of the bearing; meanwhile, the thrust pad 7 is arranged in a split mode, so that the second wear-resistant insulating layer 71 is convenient to form and effectively arrange, the operability is strong, and the processing and maintenance are convenient.

Example 2

Fig. 10 shows the utility model discloses prevent bearing part's for aerogenerator that pivot was locked embodiment, this embodiment is the same basically with last embodiment, and the difference lies in that the elasticity adjusting part 31 of this implementation is belleville spring 312, and belleville spring 312 is the setting of compression form, and belleville spring 312 is compressible when the pivot inflation, and it makes radial tile 2 be in fixed state when the pivot normal operating, can stably expand outward when the pivot inflation in order to prevent the pivot locking.

Meanwhile, the belleville spring 312 is installed at the adjusting gap 4 in a limited manner through a positioning pin 35. The bearing body 1 and the radial tile 2 are correspondingly provided with positioning pin mounting grooves to form a positioning pin placing area 36, and the structure is simple and compact, and the occupied space is small. In this embodiment, the positioning pin 35 is an insulating positioning pin to further isolate the shaft current. In other embodiments, the elastic adjusting element 31 may also be an elastic plate, which is disposed in a compressed manner and is compressible when the rotating shaft expands, so that the rotating shaft can expand stably to prevent the rotating shaft from locking. The elastic plate is installed at the adjusting gap position in a limiting way through a positioning pin 35. While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.

Claims

1. The bearing component for the wind driven generator is characterized by comprising a bearing body, a plurality of radial tiles and a plurality of groups of limiting adjusting units, wherein the radial tiles are circumferentially arranged along the inner side of the bearing body at intervals, the radial tiles positioned at the lower half part of the bearing body are in contact with the bearing body, and an adjusting gap for preventing the locking of the rotating shaft is reserved between the radial tiles positioned at the upper half part of the bearing body and the bearing body; the adjusting gap is kept unchanged through the limiting adjusting unit arranged between the radial bush and the bearing body when the rotating shaft works normally, and the adjusting gap is reduced when the rotating shaft expands to be in contact with the radial bush.

2. The anti-rotation shaft locking bearing component for a wind-driven generator according to claim 1, wherein the limit adjustment unit includes an elastic adjustment member and a pad limit member, and the elastic adjustment member is disposed in a compressed state at the adjustment gap position; the shoe block limiting part is connected between the radial shoe and the bearing body, and an avoiding groove for the radial shoe to expand outwards is arranged between the shoe block limiting part and the radial shoe or the bearing body.

3. The anti-rotation shaft-locking bearing component for a wind-driven generator according to claim 2, characterized in that the elastic adjustment member is a cylindrical spring; the bearing body and the radial tile are correspondingly provided with spring mounting grooves to form a spring placing area; the cylindrical spring is arranged in the spring placing area in a compressed manner.

4. The anti-rotation shaft locking bearing component for the wind driven generator according to claim 2, wherein the elastic adjusting piece is a belleville spring or an elastic plate, and is installed at the adjusting gap in a limiting manner through a positioning pin; the bearing body with radial tile corresponds and is provided with the locating pin mounting groove to form the locating pin and place the district.

5. The anti-rotation shaft locking bearing component for a wind turbine according to any one of claims 2 to 4, wherein the pad limiting member is a limiting screw, and the avoiding groove is provided in the bearing body or the radial pad; when the avoiding groove is formed in the bearing body, the tail end of the limiting screw is in threaded connection with the radial tile; when the avoidance groove is formed in the radial tile, the tail end of the limiting screw is in threaded connection with the bearing body; the head end of the limit screw is in limit fit with the avoidance groove under the action of the elastic adjusting piece.

6. The anti-rotation shaft-locking bearing component for a wind-driven generator according to claim 5, wherein two limit screws are provided for each set of the limit adjustment units, and the two limit screws are respectively provided on both sides of the elastic adjustment member.

7. The bearing component for an anti-rotation shaft-locking wind turbine according to any one of claims 1 to 4, wherein the relation between the adjustment clearance L and the diameter d of the rotating shaft is 0.005 d.ltoreq.L.ltoreq.0.01 d.

8. The anti-rotation shaft locking bearing component for a wind turbine according to any one of claims 1 to 4, wherein the inner side surface of the radial shoe is a radial bearing surface for bearing the radial load of the rotation shaft, and the radial bearing surface is provided with a first wear-resistant insulating layer; and a radial insulating layer is arranged on the outer side surface of the radial tile.

9. The anti-rotation shaft-locking bearing component for a wind-driven generator according to claim 8, wherein an adjusting block for ensuring the radial shoe to swing adaptively along with the rotating shaft and a swing limiting member for limiting the swing range of the radial shoe are provided between the radial shoe and the bearing body at the lower half part of the bearing body, wherein the adjusting block is mounted on the radial shoe, and an adjusting spherical surface which is in swing fit with the bearing body is provided on the outer side of the adjusting block; the swinging limiting part is arranged between the centering block and the bearing body.

10. The anti-rotation shaft locking bearing component for a wind-driven generator according to any one of claims 1 to 4, wherein a thrust pad is arranged between adjacent radial pads, the thrust pad is arranged on the inner end face of the bearing body, the outer end face of the thrust pad is an axial bearing face for bearing the axial load of the rotating shaft, and the axial bearing face is provided with a second wear-resistant insulating layer.