CN213981952U

CN213981952U - Wind power gear box

Info

Publication number: CN213981952U
Application number: CN202022930890.XU
Authority: CN
Inventors: 戚松; 张合超; 李彩云; 王雪丰; 许若震
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-17
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to a gear box technical field discloses a wind-powered electricity generation gear box, include: the inner wall of the box body is provided with a bearing seat; the end parts of the planet carrier are provided with rotating bosses; the sliding bearing, it installs on the bearing frame to rotate the boss to rotate through the sliding bearing, and the sliding bearing includes sliding part and the location portion of being connected with sliding part, and the sliding part presss from both sides and locates between rotation boss and the bearing frame, and the sliding part is located between the web of bearing frame and planet carrier, has seted up connection structure on the location portion, and connecting piece run through connection structure connects on bearing frame or planet carrier. Through the structure, the wind power gear box can avoid the problems of slipping of the inner ring and the outer ring of the bearing and slipping of the roller, and the reliability of the wind power gear box is improved while the cost is reduced.

Description

Wind power gear box

Technical Field

The utility model relates to a gear box technical field especially relates to a wind-powered electricity generation gear box.

Background

In a wind generating set, because the rotating speed of a wind wheel is very low and can not reach the rotating speed required by the power generation of a generator, the generator needs to obtain the corresponding rotating speed through the acceleration of a wind power gear box, and the wind power gear box plays a vital role in wind power equipment as an important core component.

Wind power gearboxes typically include at least one stage of planetary gear train, wherein the planet carrier is typically rotatably mounted on the box using rolling bearings. The rolling bearing can be a cylindrical roller bearing or a tapered roller bearing, and the main function of the rolling bearing is to support the radial load and the axial load of the planet carrier. However, effective stopping means cannot be applied to the inner ring and the outer ring of the rolling bearing due to the influence of assembly manufacturability and space structure, and the problems of slipping of the inner ring and the outer ring of the bearing and slipping of rollers often occur in the use process; in addition, the conical bearing has extremely high pre-tightening requirements, so that the problems of abnormal sound and even failure in the operation process due to improper pre-tightening are easy to occur, and the reliability of the bearing is low; in addition, the planet carrier in the planetary gear box is large in size, the rolling bearing is large in size, and the cost is high, so that great inconvenience is brought to the design of the large-megawatt wind power gear box.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind-powered electricity generation gear box, this wind-powered electricity generation gear box can avoid the problem that the outer lane skidded and the roller skidded in the bearing, improves its reliability in reduce cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a wind power gearbox comprising: the inner wall of the box body is provided with a bearing seat; the end part of the planet carrier is provided with a rotating boss; the rotating boss is rotatably installed on the bearing seat through the sliding bearing, the sliding bearing comprises a sliding part and a positioning part connected with the sliding part, the sliding part is clamped between the rotating boss and the bearing seat, the sliding part is positioned between the bearing seat and the web plate of the planet carrier, a connecting structure is arranged on the positioning part, and the connecting piece penetrates through the connecting structure and is connected to the bearing seat or the planet carrier.

As a preferred scheme of the wind power gear box, a first positioning hole is formed in the bearing seat, and the connecting piece penetrates through the connecting structure and is connected to the first positioning hole.

As a preferred scheme of the wind power gear box, the wind power gear box further comprises a first shaft sleeve, and the first shaft sleeve is clamped between the sliding bearing and the rotating boss.

As a preferred scheme of the wind power gear box, the wind power gear box further comprises an axial positioning piece, and the axial positioning piece is connected to the end face of the rotating boss and abutted to one end, away from the positioning portion, of the sliding bearing and the first shaft sleeve.

As a preferred scheme of the wind power gearbox, the first bushing comprises a first body and a first separating part connected to the first body, the first body is clamped between the sliding bearing and the rotating boss, and the first separating part is clamped between the sliding bearing and the web.

As a preferred scheme of the wind power gear box, a second positioning hole is formed in the web plate, and the connecting piece penetrates through the connecting structure and is connected to the second positioning hole.

As a preferred scheme of the wind power gear box, the wind power gear box further comprises a second shaft sleeve, and the second shaft sleeve is clamped between the sliding bearing and the bearing seat.

As a preferred scheme of the wind power gearbox, the second bushing includes a second body and a second partition connected to the second body, the second body is clamped between the sliding bearing and the bearing seat, and the second partition abuts against one end, far away from the positioning portion, of the sliding bearing.

As a preferred scheme of the wind power gear box, the wind power gear box further comprises a gear ring, a planet wheel and a sun wheel, the gear ring is connected to the inner wall of the box body, the planet wheel is rotationally connected to the web, the sun wheel is installed on the planet carrier, and the planet wheel is meshed between the sun wheel and the gear ring.

As a preferred scheme of the wind power gear box, the wind power gear box further comprises a pin shaft, a pin shaft hole is formed in the amplitude plate, the pin shaft is connected into the pin shaft hole, and the planet wheel is rotatably connected onto the pin shaft.

The utility model has the advantages that:

the utility model provides a wind-powered electricity generation gear box, this wind-powered electricity generation gear box include box, planet carrier and slide bearing, are equipped with the bearing frame on the box inner wall, and the tip of planet carrier is equipped with the rotation boss, and passes through the slide bearing rotation to the rotation boss and install on the bearing frame. In addition, the sliding bearing comprises a sliding part and a positioning part which are connected with each other, the sliding part is clamped between the rotating boss and the bearing seat, so that the rotating boss can smoothly rotate, and the positioning part is positioned between the bearing seat and the web plate of the planet carrier, so that the sliding bearing is conveniently axially positioned. This wind-powered electricity generation gear box adopts slide bearing to replace antifriction bearing, has avoided the problem of antifriction bearing inner and outer lane skidding and the wearing and tearing of skidding between roller and raceway surface, because the life of slide bearing is far greater than antifriction bearing's life, has improved the reliability of this wind-powered electricity generation gear box moreover, because the structure of slide bearing is simple than antifriction bearing, and is with low costs, is favorable to reducing the cost of this wind-powered electricity generation gear box.

Drawings

FIG. 1 is a partial cross-sectional view of a wind power gearbox provided in accordance with an embodiment one;

FIG. 2 is a partial cross-sectional view of a wind power gearbox provided in accordance with a second embodiment;

FIG. 3 is a partial cross-sectional view of a wind power gearbox provided in accordance with a third embodiment;

FIG. 4 is a partial cross-sectional view of a wind power gearbox provided in accordance with a fourth embodiment;

FIG. 5 is a partial cross-sectional view of a wind power gearbox provided by embodiment five.

In the figure:

1. a box body; 11. a bearing seat; 2. a planet carrier; 21. rotating the boss; 22. a web; 3. a sliding bearing; 31. a sliding part; 32. a positioning part; 4. a connecting member; 5. a first bushing; 51. a first body; 52. a first partition; 6. an axial positioning member; 7. a second shaft sleeve; 71. a second body; 72. a second partition part; 8. a ring gear; 9. a planet wheel; 10. a sun gear; 101. and (7) a pin shaft.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the wind power gearbox provided by the present invention is further explained by the specific embodiment with reference to the drawings.

The first embodiment is as follows:

the embodiment provides a wind-powered electricity generation gear box, as shown in fig. 1, this wind-powered electricity generation gear box includes box 1, planet carrier 2 and slide bearing 3, is equipped with bearing frame 11 on the inner wall of box 1, and planet carrier 2's both ends all are equipped with rotation boss 21, and two rotation bosses 21 all rotate through slide bearing 3 and install on bearing frame 11. It will be appreciated that in other embodiments one of the two rotation bosses 21 may be rotatably mounted to the bearing housing 11 by means of the slide bearing 3.

This wind-powered electricity generation gear box adopts slide bearing 3 to replace antifriction bearing for rotate boss 21 and can smoothly rotate for bearing frame 11, avoided the problem of antifriction bearing inner and outer lane skid and the wearing and tearing that skids between roller and raceway surface. And because the working life of slide bearing 3 is far greater than the working life of antifriction bearing, use slide bearing 3 still to improve this wind-powered electricity generation gear box's reliability, in addition because the structure of slide bearing 3 is simpler than antifriction bearing, and is with low costs, is favorable to reducing this wind-powered electricity generation gear box's cost.

In the present embodiment, the sliding bearing 3 includes a sliding portion 31 and a positioning portion 32 connected to the sliding portion 31, the sliding portion 31 is interposed between the rotating boss 21 and the bearing seat 11, and the positioning portion 32 is located between the bearing seat 11 and the web 22 of the planet carrier 2, so as to facilitate axial positioning of the sliding bearing 3. Preferably, the positioning portion 32 is provided with a connecting structure, and the connecting member 4 penetrates through the connecting structure and is connected to the bearing seat 11. The connecting structure can be a connecting hole, and the connecting piece 4 is connected to the bearing seat 11 after penetrating through the connecting hole. Specifically, as shown in fig. 1, a first positioning hole is formed in the bearing seat 11, and the connecting member 4 penetrates through the connecting hole and then is connected to the first positioning hole, so that the sliding bearing 3 is connected to the bearing seat 11, and the connection and positioning of the sliding bearing 3 are realized. That is, the sliding bearing 3 in the present embodiment is fixed relative to the bearing seat 11, and the carrier 2 rotates relative to the sliding bearing 3.

Specifically, connecting piece 4 is connecting bolt, and first locating hole is the bolt hole, and slide bearing 3 passes through connecting bolt detachably to be connected on bearing frame 11 for slide bearing 3's dismantlement is convenient, the dismouting and the maintenance of this wind-powered electricity generation gear box of being convenient for. In other embodiments, the plain bearing 3 may not include the positioning portion 32, and the outer peripheral surface of the plain bearing 3 is attached to the bearing housing 11 by interference fit.

It should be noted that the wind power gearbox in this embodiment further includes a gear ring 8, a planet wheel 9 and a sun wheel 10, the gear ring 8 is connected to the inner wall of the box body 1, the planet wheel 9 is rotationally connected to the web 22, the sun wheel 10 is mounted on the planet carrier 2, and the planet wheel 9 is engaged between the sun wheel 10 and the gear ring 8, so as to achieve power transmission. Specifically, the wind power gearbox further comprises a pin shaft 101, a pin shaft 101 hole is formed in the amplitude plate 22, the pin shaft 101 is connected in the pin shaft 101 hole, and the planet wheel 9 is rotatably connected to the pin shaft 101 through a bearing.

It should be noted that the wind power gearbox in this embodiment may have one planetary gear train, or may have at least two planetary gear trains in transmission connection, so as to realize transmission of torque, so as to enable the generator to obtain a corresponding rotation speed.

Example two:

as shown in fig. 2, the wind power gearbox provided by the embodiment is different from the wind power gearbox provided by the first embodiment in that the wind power gearbox further includes a first shaft sleeve 5, and the first shaft sleeve 5 is clamped between the sliding bearing 3 and the rotating boss 21, so that the rotating boss 21 can rub against the first shaft sleeve 5 when rotating along with the planet carrier 2, rather than directly rubbing against the sliding bearing 3, which is beneficial to reducing wear of the sliding bearing 3 and prolonging the service life of the sliding bearing 3. In addition, when the first sleeve 5 is worn seriously, the reliability of the sliding bearing 3 can be ensured by replacing the first sleeve 5. It can be understood that the first shaft sleeve 5 is a wear-resistant member, that is, the first shaft sleeve 5 is made of a wear-resistant material, which is beneficial to prolonging the service life of the first shaft sleeve 5.

Preferably, the first bushing 5 includes a first body 51 and a first separating portion 52 connected to the first body 51, the first body 51 is interposed between the sliding bearing 3 and the rotating boss 21, and the first separating portion 52 is interposed between one end of the sliding bearing 3 close to the positioning portion 32 and the web 22, so as to separate the web 22 from the sliding bearing 3 and prevent the web 22 from being worn.

Example three:

as shown in fig. 3, the wind power gearbox provided in the present embodiment is different from the wind power gearbox provided in the second embodiment in that the wind power gearbox further includes an axial positioning element 6, an inner edge side of the axial positioning element 6 is connected to an end surface of the rotating boss 21, and an outer edge side of the axial positioning element 6 abuts against one ends, far away from the positioning portion 32, of the sliding bearing 3 and the first shaft sleeve 5, and is used for performing axial limiting on the sliding bearing 3 and the first shaft sleeve 5.

It can be understood that, the wind power gear box in this embodiment may be that the axial positioning piece 6 is arranged at the rotation boss 21 at one end of the planet carrier 2, or the axial positioning pieces 6 are arranged at the rotation bosses 21 at both ends of the planet carrier 2, so as to perform axial limiting on the sliding bearing 3 and the first shaft sleeve 5.

Example four:

as shown in fig. 4, the difference between the wind power gearbox provided by the present embodiment and the wind power gearbox provided by the first embodiment is that the bearing seat 11 in the wind power gearbox provided by the present embodiment is not provided with the first positioning hole, but is provided with the second positioning hole on the web 22, and the connecting member 4 is connected to the second positioning hole after penetrating through the connecting hole, so that the sliding bearing 3 is connected to the web 22, and the connection and positioning of the sliding bearing 3 are realized. That is, the sliding bearing 3 in the present embodiment is fixed to the carrier 2 and rotates together with the carrier, and the sliding bearing 3 rotates relative to the bearing seat 11.

Specifically, the connecting piece 4 is a connecting bolt, the second positioning hole is a bolt hole, and the sliding bearing 3 is detachably connected to the web 22 through the connecting bolt, so that the sliding bearing 3 is convenient to detach, and the wind power gear box is convenient to detach and maintain.

Example five:

as shown in fig. 5, the wind power gear box provided by the present embodiment is different from the wind power gear box provided by the fourth embodiment in that the wind power gear box provided by the present embodiment further includes a second shaft bushing 7, and the second shaft bushing 7 is clamped between the sliding bearing 3 and the bearing seat 11, so that the sliding bearing 3 can rub against the second shaft bushing 7 when rotating along with the planet carrier 2, instead of directly rubbing against the bearing seat 11, which is beneficial to reducing wear of the sliding bearing 3 and prolonging the service life of the sliding bearing 3. In addition, when the second bushing 7 is worn seriously, the reliability of the sliding bearing 3 can be ensured by replacing the second bushing 7. It can be understood that the second shaft sleeve 7 is a wear-resistant part, that is, the second shaft sleeve 7 is made of a wear-resistant material, which is beneficial to prolonging the service life of the second shaft sleeve 7.

Preferably, the second bushing 7 includes a second body 71 and a second partition portion 72 connected to the second body 71, the second body 71 is interposed between the sliding bearing 3 and the bearing seat 11, and the second partition portion 72 is located between one end of the sliding bearing 3 away from the positioning portion 32 and another component (for example, a cover of the box 1), so as to separate the sliding bearing 3 from the other component and prevent the sliding bearing 3 from being worn due to contact with the other component.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wind power gearbox, comprising:

the device comprises a box body (1), wherein a bearing seat (11) is arranged on the inner wall of the box body (1);

the planet carrier (2), the end of the planet carrier (2) is provided with a rotary boss (21);

slide bearing (3), it passes through to rotate boss (21) slide bearing (3) rotate install in on bearing frame (11), slide bearing (3) including sliding part (31) and with location portion (32) that sliding part (31) are connected, sliding part (31) press from both sides and locate rotate boss (21) with between bearing frame (11), just sliding part (31) are located bearing frame (11) with between the width of cloth (22) of planet carrier (2), seted up connection structure on location portion (32), connecting piece (4) run through connection structure and connect in bearing frame (11) or on planet carrier (2).

2. A wind power gearbox according to claim 1, characterised in that the bearing block (11) is provided with a first location hole, and the connecting piece (4) extends through the connecting structure and is connected in the first location hole.

3. A wind power gearbox according to claim 1, further comprising a first bushing (5), said first bushing (5) being interposed between said plain bearing (3) and said rotation boss (21).

4. The wind power gearbox according to claim 3, characterized by further comprising an axial positioning piece (6), wherein the axial positioning piece (6) is connected to the end face of the rotating boss (21) and abuts against one ends of the sliding bearing (3) and the first shaft sleeve (5) far away from the positioning part (32).

5. A wind power gearbox according to claim 3, characterised in that said first bushing (5) comprises a first body (51) and a first partition (52) connected to said first body (51), said first body (51) being interposed between said sliding bearing (3) and said rotary boss (21), said first partition (52) being interposed between said sliding bearing (3) and said web (22).

6. A wind power gearbox according to claim 1, characterised in that said web (22) is provided with a second locating hole in which said connecting member (4) extends through said connecting structure.

7. A wind power gearbox according to claim 1, further comprising a second bushing (7), said second bushing (7) being sandwiched between said plain bearing (3) and said bearing seat (11).

8. A wind power gearbox according to claim 7, characterised in that the second bushing (7) comprises a second body (71) and a second partition (72) connected to the second body (71), the second body (71) being sandwiched between the plain bearing (3) and the bearing seat (11), the second partition (72) being abutted against an end of the plain bearing (3) remote from the positioning portion (32).

9. A wind power gearbox according to claim 1, further comprising a ring gear (8), planet wheels (9) and a sun wheel (10), said ring gear (8) being connected to the inner wall of the casing (1), said planet wheels (9) being rotatably connected to said web (22), said sun wheel (10) being mounted on said planet carrier (2), said planet wheels (9) being engaged between said sun wheel (10) and said ring gear (8).

10. The wind power gearbox as recited in claim 9, further comprising a pin (101), wherein the web (22) is provided with a pin (101) hole, the pin (101) is connected in the pin (101) hole, and the planet wheel (9) is rotatably connected to the pin (101).