CN217328100U

CN217328100U - Bearing for yawing and pitching of wind generating set

Info

Publication number: CN217328100U
Application number: CN202221124139.3U
Authority: CN
Inventors: 栗文彬; 孙宁; 赵丽娜; 于东东; 吴竹青; 柳岱江
Original assignee: Yantai Tiancheng Machinery Co ltd
Current assignee: Yantai Tiancheng Machinery Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-08-30
Anticipated expiration: 2032-05-12

Abstract

The utility model relates to a bearing for yawing and variable pitch of a wind generating set, which relates to the field of bearings and comprises an inner ring, an outer ring and a rolling body, wherein the rolling body is uniformly distributed between the inner ring and the outer ring, the inner ring and the outer ring are coaxially sleeved to form rotary connection, and the inner ring or the outer ring is provided with a circle of first connecting holes and a circle of second connecting holes; the first connecting holes and the second connecting holes are distributed in an array mode along the circumferential direction of the inner ring or the outer ring respectively; the first connecting holes are distributed between two adjacent second connecting holes; the inner ring or the outer ring is provided with a tooth part; the first connecting hole and the second connecting hole can be inserted with connecting pieces. A wind generating set driftage, become oar with bearing joint strength height.

Description

Bearing for yawing and pitching of wind generating set

Technical Field

The utility model relates to a bearing especially relates to a wind generating set drifts, becomes oar and uses bearing.

Background

The main parts of the wind generating set comprise blades, a frame, a tower, a main shaft, a hub and the like, and the wind generating set has basic performances of long service life, high reliability and the like. Most of key parts of the wind turbine generator are connected through high-strength bolts. These high strength bolts are in a harsh environment throughout the year and are subject to complex forces. According to the running condition of the wind generating set, the bolt connection position is a position which is easy to fail. Therefore, the safety and reliability of the high-strength bolt work directly affect the stability and safety of the operation of the wind generating set.

Because the unit is bulky, the working environment is bad, and the failure rate of the important connecting system of the wind turbine generator, especially the high-strength bolts of the variable-pitch connecting system and the yaw connecting system of the unit is high, the normal operation of the unit is directly influenced, and huge economic loss is caused. Therefore, the development of the strength and service life research of the high-strength bolt of the pitch and yaw connecting system of the wind generating set has great significance for the safe operation of the whole set.

When the pitch bearing and the yaw bearing are designed and calculated, the strength and the service life of the pitch bearing and the yaw bearing of the bearing can meet the requirements under many conditions, but the ultimate strength and the fatigue life of the bolt cannot meet the requirements.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough of existence among the prior art, the utility model provides a wind generating set drifts, becomes oar and uses bearing.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a wind generating set drifts, becomes oar and uses bearing, including inner circle, outer lane and rolling element, the rolling element equipartition is between inner circle and outer lane, inner circle and outer lane coaxial cover establish and form swivelling joint, inner circle or outer lane are provided with round first connecting hole and round second connecting hole; the first connecting holes and the second connecting holes are distributed in an array mode along the circumferential direction of the inner ring or the outer ring respectively; the array diameter of the first connecting hole is a, the array diameter of the second connecting hole is b, wherein a is not equal to b; the first connecting holes are distributed between two adjacent second connecting holes; the inner ring or the outer ring is provided with a tooth part; the first connecting hole and the second connecting hole can be inserted with connecting pieces.

Further, the first connecting hole and the second connecting hole are both arranged on the inner ring; the outer ring is provided with a circle of third connecting holes, and the tooth part is arranged on the outer ring.

Furthermore, the first connecting hole and the second connecting hole are through holes, and the third connecting hole is a blind hole.

Further, the first connecting hole and the second connecting hole are both arranged on the outer ring; the inner ring is provided with a circle of third connecting holes, and the tooth part is arranged on the inner ring.

Further, the first connecting hole, the second connecting hole and the third connecting hole are all through holes.

Further, the device also comprises a retainer and a sealing ring; the retainer is arranged between the inner ring and the outer ring, and the sealing ring is connected to the joint of the end faces of the inner ring and the outer ring.

Further, the bearing is of a double-row raceway type.

Further, the bearing is of a three-row raceway type.

The utility model discloses a wind generating set drifts, becomes oar and uses bearing has following beneficial effect at least: (1) the bearing adopts a three-row raceway type, and under the same load, the design can greatly improve the strength and the service life of the bearing, and simultaneously can reduce the size of the bearing and reduce the weight of the bearing; (2) the double rows of bolts can increase the number of the bolts, improve the bearing capacity of the bolts and reduce the risks of breakage and fatigue failure of the bolts; (3) the wall thickness of the first bolt hole and the second bolt hole can be guaranteed by the aid of the cross distribution mode of the double-row bolts, and reliability of overall operation of the bearing is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

fig. 4 is a cross-sectional view of a second embodiment of the present invention.

1. An inner ring; 2. an outer ring; 3. a rolling body; 4. a first connection hole; 5. a second connection hole; 6. a tooth portion; 7. a connecting member; 8. a third connection hole; 9. a holder; 10. and (5) sealing rings.

Detailed Description

The principles and features of the present invention will be described with reference to the accompanying fig. 1 to 4, wherein the examples are provided only for explaining the present invention and are not intended to limit the scope of the present invention.

Example one

A bearing for yawing and pitching of a wind generating set is of a double-row raceway type and comprises an inner ring 1, an outer ring 2, a rolling body 3 and a sealing ring 10. The inner ring 1 and the outer ring 2 are coaxially sleeved, and the rolling body 3 is arranged between the inner ring 1 and the outer ring 2. The bearing in this embodiment is of a double row raceway type. The sealing ring 10 is arranged at the joint of the end faces of the inner ring 1 and the outer ring 2.

The inner ring 1 is provided with a first connecting hole 4 and a second connecting hole 5, and the first connecting hole 4 and the second connecting hole 5 are through holes. The first connecting holes 4 and the second connecting holes 5 are circumferentially distributed at intervals. Wherein the diameter of a circle formed by surrounding a plurality of the first connecting holes 4 is a, and the diameter of a circle formed by surrounding a plurality of the second connecting holes 5 is b, wherein a > b. The first connecting holes 4 are distributed between any two second connecting holes 5. The first connecting holes 4 and the second connecting holes 5 are staggered, so that the wall thickness between the first connecting holes 4 and the second connecting holes 5 is ensured while the hole site number is increased. The first and

second connection holes

4 and 5 may have a connection member 7 (e.g., a bolt, etc.) inserted therein to fix the bearing. The outer ring 2 is provided with a circle of third connecting holes 8, and the third connecting holes 8 are threaded blind holes. The outer ring 2 is provided with a ring of teeth 6.

Example two

A bearing for yawing and pitching of a wind generating set is of a double-row raceway type and comprises an inner ring 1, an outer ring 2, a rolling body 3, a retainer 9 and a sealing ring 10. The inner ring 1 and the outer ring 2 are coaxially sleeved, the rolling body 3 and the retainer 9 are both arranged between the inner ring 1 and the outer ring 2, and the retainer 9 is used for isolating the rolling body 3. The bearing in this embodiment is of a double row raceway type. The sealing ring 10 is arranged at the joint of the end faces of the inner ring 1 and the outer ring 2.

The outer ring 2 is provided with a first connecting hole 4 and a second connecting hole 5, and the first connecting hole 4 and the second connecting hole 5 are through holes. The first connecting holes 4 and the second connecting holes 5 are circumferentially distributed at intervals. The first connecting holes 4 are distributed between any two second connecting holes 5. The first connecting holes 4 and the second connecting holes 5 are arranged in a staggered mode, so that the number of hole sites is increased, and the wall thickness between the first connecting holes 4 and the second connecting holes 5 is ensured. The diameter of a circle formed by surrounding a plurality of the first connecting holes 4 is a, and the diameter of a circle formed by surrounding a plurality of the second connecting holes 5 is b, wherein a < b. The first and

second connection holes

4 and 5 may have a connection member 7 (e.g., a bolt, etc.) inserted therein to fix the bearing. The inner ring 1 is provided with a circle of third connecting holes 8, and the third connecting holes 8 are through holes. The inner ring 1 is provided with a ring of teeth 6.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a wind generating set drifts, becomes oar and uses bearing, includes inner circle (1), outer lane (2) and rolling element (3), rolling element (3) equipartition is between inner circle (1) and outer lane (2), inner circle (1) and outer lane (2) coaxial cover are established and are formed swivelling joint, its characterized in that: the inner ring (1) or the outer ring (2) is provided with a circle of first connecting holes (4) and a circle of second connecting holes (5); the first connecting holes (4) and the second connecting holes (5) are distributed in an array mode along the circumferential direction of the inner ring (1) or the outer ring (2) respectively; the array diameter of the first connecting hole (4) is a, the array diameter of the second connecting hole (5) is b, wherein a is not equal to b; the first connecting holes (4) are distributed between two adjacent second connecting holes (5); the inner ring (1) or the outer ring (2) is provided with a tooth part (6); the first connecting hole (4) and the second connecting hole (5) can be inserted with a connecting piece (7).

2. The bearing for yawing and pitching the wind generating set according to claim 1, wherein: the first connecting hole (4) and the second connecting hole (5) are arranged on the inner ring (1); the outer ring (2) is provided with a circle of third connecting holes (8), and the tooth part (6) is arranged on the outer ring (2).

3. The bearing for yawing and pitching of the wind generating set according to claim 2, wherein: the first connecting hole (4) and the second connecting hole (5) are through holes, and the third connecting hole (8) is a blind hole.

4. The bearing for yawing and pitching of the wind generating set according to claim 1, wherein: the first connecting hole (4) and the second connecting hole (5) are both arranged on the outer ring (2); the inner ring (1) is provided with a circle of third connecting holes (8), and the tooth part (6) is arranged on the inner ring (1).

5. The bearing for yawing and pitching the wind generating set according to claim 4, wherein: and the first connecting hole (4), the second connecting hole (5) and the third connecting hole (8) are all through holes.

6. The bearing for yawing and pitching of the wind generating set according to claim 1, wherein: the device also comprises a retainer (9) and a sealing ring (10); the retainer (9) is arranged between the inner ring (1) and the outer ring (2), and the sealing ring (10) is connected to the end face connection position of the inner ring (1) and the outer ring (2).

7. The bearing for yawing and pitching of the wind generating set according to claim 1, wherein: the bearing is of a double-row raceway type.

8. The bearing for yawing and pitching of the wind generating set according to claim 1, wherein: the bearing is of a three-row raceway type.