Bearing chock and wind turbine generator system

Abstract

The embodiment of the present application provides a bearing seat and a wind turbine generator, the bearing seat comprising: a main body part, which is in a cylindrical shape and comprises a top part and a bottom part arranged oppositely along the radial direction thereof; and a first connecting plate connected to the outer surface of the main body part and arranged close to the bottom part, so that the main body part is connected to a specified position through the first connecting plate; wherein the first connecting plate comprises a first connecting area, two or more connecting holes are arranged in the first connecting area and pass through the first connecting plate, the two or more connecting holes comprise a first connecting hole, a second connecting hole and a third connecting hole which are arranged at intervals along the extension path close to the edge of the first connecting area, and the connecting lines of the first connecting hole, the second connecting hole and the third connecting hole form an obtuse angle. In the present application, the stress between the three connecting pieces in the first connecting hole, the second connecting hole and the third connecting hole is relatively uniform, the stability of the relative position between the main body part and the specified position is ensured, and the stress requirement of the bearing seat can be met.

Description

Technical Field

[0001] This application relates to the field of wind power equipment technology, and in particular to a bearing housing and a wind turbine generator set. Background Technology

[0002] With the continuous development of wind power generation technology, the size of wind turbine generators is also constantly increasing. The bearing housing is one of the most critical components of a wind turbine generator. As the main support component of the main shaft, the reliable performance of the bearing housing is a key factor in ensuring the normal and stable operation of the wind turbine generator. Currently, due to the increasing size of wind turbine generators, the traditional connection method between the bearing housing and the base can no longer meet the stress requirements of the bearing housing. Summary of the Invention

[0003] This application provides a bearing housing and a wind turbine generator set, which are designed to meet the stress requirements of the bearing housing.

[0004] This application provides a bearing housing, including: a main body, which is cylindrical and includes a top and a bottom disposed radially opposite to each other; a first connecting plate, which is connected to the outer surface of the main body and disposed near the bottom, so that the main body is connected to a designated position through the first connecting plate; wherein, the first connecting plate includes a first connecting area, and the first connecting area is provided with two or more connecting holes that penetrate the first connecting plate, the two or more connecting holes including a first connecting hole, a second connecting hole and a third connecting hole that are disposed at intervals near the edge of the first connecting area and extending along the edge of the first connecting area, and the line connecting the first connecting hole, the second connecting hole and the third connecting hole forms an obtuse angle.

[0005] According to an embodiment of the first aspect of this application, the second connecting hole is located on the side of the first connecting hole close to the main body, and the third connecting hole is located on the side of the first connecting hole away from the main body. The main body includes a first connecting end and a second connecting end disposed opposite each other in its axial direction, and the first connecting hole is located on the side of the second connecting hole facing the first connecting end.

[0006] According to any of the foregoing embodiments of the first aspect of this application, the first connecting end is provided with locking portions on both sides of the central axis of the main body, and the bearing seat is used to lock in a preset position by means of the locking portions.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the first connecting plate is disposed near the first connecting end, and the main body includes a second reference surface that extends along the radial direction and passes through the central axis of the main body;

[0008] The first connecting hole is located on the side of the line connecting the second connecting hole and the third connecting hole that is close to the second reference surface.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the first connecting region is fan-shaped and has an arc-shaped edge, which protrudes toward the second reference surface.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the first connecting region further includes two linear sides connected to both ends of the arc-shaped side, and the included angle between the two linear sides is 80° to 100°.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the number of connecting holes is 9, with 5 connecting holes distributed on the arc-shaped side and 3 connecting holes distributed on each of the two linear sides. The arc-shaped side and the linear side share a connecting hole at their intersection position, and a connecting hole is provided in the area enclosed by the two linear sides and the arc-shaped side.

[0012] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a first reinforcing plate, connecting the first connecting plate and the main body, the first reinforcing plate being located on one side of the first connecting plate and intersecting with the first connecting plate, and the first connecting area being located between the first connecting end and the first reinforcing plate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the first connecting plate and the main body are smoothly connected by a second transition surface, and the first connecting area and the second transition surface are offset.

[0014] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a second connecting plate, the second connecting plate and the first connecting plate being distributed at intervals along the axial direction of the main body, the second connecting plate having a second connecting region, and two or more fixing holes being provided in a row or column within the second connecting region.

[0015] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a second reinforcing plate, which intersects the second connecting plate and the main body respectively perpendicularly, and the second reinforcing plate has a second connecting area on both sides along the axial direction.

[0016] According to any of the foregoing embodiments of the first aspect of this application, there are two first connecting plates, and the two first connecting plates are symmetrically distributed on both sides of the main body relative to the central axis of the main body;

[0017] And / or, there are two second connecting plates, which are symmetrically distributed on both sides of the main body relative to the central axis of the main body.

[0018] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a lifting lug, connected to the main body and disposed near the top, the lifting lug being near one end of the main body in the axial direction and located on the central axis of the main body.

[0019] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a counterweight mounting position located at the top and used for mounting a counterweight block, wherein two or more counterweight mounting positions are symmetrically distributed relative to the central axis of the main body.

[0020] According to any of the foregoing embodiments of the first aspect of this application, it further includes: a leakage hole, disposed near the bottom and penetrating the main body portion.

[0021] The leakage hole is located in the plane of the central axis of the main body;

[0022] And / or, the leakage hole is located near the middle of the main body in its axial direction.

[0023] The second aspect of this application also provides a wind turbine generator set, including the bearing housing provided in any of the first aspect embodiments described above.

[0024] In the bearing housing provided in this embodiment, the bearing housing includes a main body and a first connecting plate, and the bearing housing is fixedly connected to a designated position by the first connecting plate. Multiple connecting holes are provided in a first connecting area on the first connecting part. Bolts or other connecting members are installed in the connecting holes to fix the first connecting plate to the designated position, thereby fixing the bearing housing to the designated position. The multiple connecting holes include a first connecting hole, a second connecting hole, and a third connecting hole. The first connecting hole, the second connecting hole, and the third connecting hole are located near the edge of the first connecting area. Therefore, when one end of the main body is subjected to a tilting force, the connecting members in the first connecting hole, the second connecting hole, and the third connecting hole located near the edge of the first connecting area experience a greater force than the connecting members in other connecting holes. The connecting members in the first connecting hole, the second connecting hole, and the third connecting hole can better absorb the tilting force. The lines connecting the first, second, and third connecting holes form an obtuse angle, allowing the connectors in the second and third connecting holes to share the force of the connector in the first connecting hole. The force among the three connectors in the first, second, and third connecting holes is relatively uniform, which can prevent individual connectors from being damaged due to excessive force, ensure the stability of the relative position between the main body and the designated position, and meet the force requirements of the bearing housing. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0026] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set provided in an embodiment of this application;

[0027] Figure 2 This is a diagram illustrating the usage state of a bearing housing provided in an embodiment of this application;

[0028] Figure 3 yes Figure 2 Top view;

[0029] Figure 4 yes Figure 3 Sectional view at point AA;

[0030] Figure 5 This is a schematic diagram of the structure of a bearing housing provided in an embodiment of this application;

[0031] Figure 6 yes Figure 5 Top view;

[0032] Figure 7 yes Figure 6 A magnified schematic diagram of the local structure at point I;

[0033] Figure 8 This is a schematic diagram of the structure of a bearing housing provided in an embodiment of this application from another perspective.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Tower; 20. Nacelle; 30. Blade; 40. Hub;

[0036] 100. Bearing housing;

[0037] 110. Main body; 111. Top; 112. Bottom; 113. First connecting end; 114. Second connecting end; 115. Locking part; 116. First fixing plate; 116a. Third transition surface; 117. First transition surface;

[0038] 120. First connecting plate; 121. First connecting area; 121a. Arc-shaped edge; 121b. Linear edge; 122. Connecting hole; 122a. First connecting hole; 122b. Second connecting hole; 122c. Third connecting hole;

[0039] 130. First reinforcing plate; 131. Second transition surface;

[0040] 140. Second connecting plate; 141. Second connecting area; 142. Fixing hole;

[0041] 150. Second reinforcing plate;

[0042] 160. Lifting lug; 161. Ear plate; 162. Lifting hole;

[0043] 170. Counterweight installation position;

[0044] 180. Leakage hole;

[0045] 200. Base;

[0046] 300, Moving shaft;

[0047] 400. Flange;

[0048] X, axial direction; Z, radial direction; Y, transverse direction; P, central axis. Detailed Implementation

[0049] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0050] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] To better understand this application, the following will be combined with... Figures 1 to 8 The bearing housing and wind turbine generator set of the embodiments of this application will be described in detail.

[0053] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a wind turbine generator set provided in an embodiment of this application.

[0054] like Figure 1As shown, the wind turbine generator set includes a tower 10, a nacelle 20 disposed at the top of the tower 10, a hub 40 connected to the nacelle 20, and two or more blades 30 connected to the hub 40 and rotatably disposed.

[0055] Please see Figures 2 to 4 , Figure 2 This is a diagram showing the usage state of a bearing housing 100 provided in an embodiment of this application. Figure 3 yes Figure 2 Top view, Figure 4 yes Figure 3 Sectional view at point AA.

[0056] like Figures 2 to 4 As shown, a bearing housing 100 is also installed inside the nacelle 20 of the wind turbine generator set. The bearing housing 100 is fixed inside the nacelle 20 by a base 200. A drive shaft 300 is installed inside the bearing housing 100, and one end of the drive shaft 300 is connected to the hub 40 via a flange 400.

[0057] During the operation of the wind turbine generator set, the hub 40 applies a force such as... Figure 2 and Figure 4 The overhead load F, indicated by the arrow, is transmitted to the bearing housing 100 through the moving shaft 300. This causes one end of the bearing housing 100 to tilt relative to the other end under the action of the overhead load F. One end of the bearing housing 100 is at risk of tilting relative to the base 200, which affects the stability of the relative position of the bearing housing 100 and the base 200.

[0058] Please refer to the following: Figures 2 to 6 , Figure 5 This is a schematic diagram of the structure of a bearing housing 100 provided in an embodiment of this application. Figure 6 yes Figure 5 Top view. Figure 6 The position of the first connecting area 121 is indicated by a dashed line. The dashed line does not constitute a limitation on the structure of the bearing housing 100 of this application.

[0059] like Figures 2 to 5As shown, this application embodiment provides a bearing housing 100, which includes: a main body 110, which is cylindrical and includes a top 111 and a bottom 112 disposed opposite to each other along its radial direction Z; a first connecting plate 120, which is connected to the outer surface of the main body 110 and disposed near the bottom 112, so that the main body 110 is connected to a designated position through the first connecting plate 120; wherein, the first connecting plate 120 includes a first connecting region 121, and the first connecting region 121 is provided with two or more connecting holes 122 that penetrate the first connecting plate 120. The two or more connecting holes 122 include a first connecting hole 122a, a second connecting hole 122b and a third connecting hole 122c that are disposed at intervals near the edge of the first connecting region 121 and extending along the edge of the first connecting region 121. The line connecting the first connecting hole 122a, the second connecting hole 122b and the third connecting hole 122c forms an obtuse angle.

[0060] The presence of two or more connecting holes 122 penetrating the first connecting plate 120 within the first connecting region 121 means that the connecting hole 122 is considered to be located within the first connecting region 121 when at least a portion of it is located within the first connecting region 121. For example, at least a portion of the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c can be located within the first connecting region 121. Therefore, connecting holes 122 can be provided on the edge of the first connecting region 121. For example, the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c can be located on the edge of the first connecting region 121. Optionally, the center of the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c is located on the edge of the first connecting region 121.

[0061] The line connecting the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c can be the line connecting the centers of the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c, or the line connecting the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c can be any position in the area where the first connecting hole 122a is located, any position in the area where the second connecting hole 122b is located, and any position in the area where the third connecting hole 122c is located.

[0062] Optionally, the connecting hole 122 is used to install bolts or other connecting parts, such as threaded rods, with each threaded rod located in its respective connecting hole 122.

[0063] In the bearing housing 100 provided in this embodiment, the bearing housing 100 includes a main body 110 and a first connecting plate 120. The bearing housing 100 is fixedly connected to a designated position via the first connecting plate 120, such as the aforementioned base 200. A plurality of connecting holes 122 are provided in a first connecting area 121 on the first connecting plate 120. By providing threaded rods in the connecting holes 122, the first connecting plate 120 is fixed to the base 200, thereby fixing the bearing housing 100 to the base 200. The plurality of connecting holes 122 include a first connecting hole 122a, a second connecting hole 122b, and a third connecting hole 122c. The first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c are located near the edge of the first connecting area 121. Therefore, when one end of the main body 110 tilts under the action of the lifting load F, the threaded rods in the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c located near the edge of the first connecting area 121 are subjected to greater forces than the threaded rods in the other connecting holes 122, which can improve the tilting problem of one end of the main body 110.

[0064] Furthermore, the line connecting the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c forms an obtuse angle, which allows the threaded rods in the second connecting hole 122b and the third connecting hole 122c to share the force of the threaded rod in the first connecting hole 122a. The force among the three threaded rods in the first connecting hole 122a, the second connecting hole 122b, and the third connecting hole 122c is relatively uniform, which can prevent individual threaded rods from being damaged due to excessive force, ensure the stability of the relative position of the main body and the base 200, and meet the force requirements of the bearing seat 100.

[0065] The main body 110 has a first reference surface that passes through the central axis P and extends laterally along the Y direction of the main body 110. The top 111 of the main body 110 refers to the portion of the main body 110 located on the first reference surface away from the first connecting plate 120. The bottom 112 of the main body 110 refers to the portion located on the first reference surface facing the first connecting plate 120. The first reference surface is a plane formed by the intersection of the axial direction X and the transverse direction Y of the main body 110.

[0066] Optionally, there are two first connecting plates 120, which are symmetrically distributed on both sides of the main body 110 relative to the central axis P of the main body 110. This makes the force on the main body 110 more balanced.

[0067] During the use of bearing housing 100, as described above, the head-up load F causes bearing housing 100 to be subjected to a tilting force intersecting its axial direction X. For example, as Figure 4As shown, the main body 110 includes a first connecting end 113 and a second connecting end 114 disposed opposite to each other. One of the first connecting end 113 or the second connecting end 114 is subjected to a tilting force caused by a head-up load F. This embodiment of the application uses the example of the first connecting end 113 being subjected to a tilting force caused by a head-up load F for illustration.

[0068] In some alternative embodiments, the second connecting hole 122b is located on the side of the first connecting hole 122a close to the main body 110, the third connecting hole 122c is located on the side of the first connecting hole 122a away from the main body 110, and the first connecting hole 122a is located on the side of the second connecting hole 122b facing the first connecting end 113.

[0069] In these optional embodiments, the first connecting hole 122a is closer to the first connecting end 113 than the second connecting hole 122b and the third connecting hole 122c, and the threaded rod in the first connecting hole 122a experiences the greatest force. The second connecting hole 122b and the third connecting hole 122c are respectively located on both sides of the first connecting hole 122a, so that the threaded rods in the second connecting hole 122b and the third connecting hole 122c can share the force on the threaded rod in the first connecting hole 122a, which can reduce the force on the threaded rod in the first connecting hole 122a, further improve the fatigue wear of the threaded rod in the first connecting hole 122a, and ensure the stability of the relative position of the main body 110 and the base 200.

[0070] In some optional embodiments, the first connecting end 113 is provided with locking parts 115 on both sides of the central axis P of the main body 110. The bearing seat 100 is used to lock in a preset position by means of the locking parts 115, for example, the bearing seat 100 is locked to the flange 400 mentioned above by means of the locking parts 115. The two locking parts 115 are respectively provided on both sides of the first connecting end 113, so that the force on the bearing seat 100 is more balanced.

[0071] There are various ways to set the locking part 115. For example, the locking part 115 is barrel-shaped and has a locking hole that extends through the central axis P.

[0072] Optionally, the locking part 115 is connected to the first fixing plate 116 and the first connecting end 113. The first fixing plate 116 is disposed on the side of the first connecting plate 120 facing the first connecting end 113, and the first fixing plate 116 and the first connecting plate 120 are connected to further improve the structural strength of the first connecting plate 120.

[0073] Optionally, the first fixing plate 116 and the first connecting plate 120 are smoothly connected via a third transition surface 116a. The first connecting area 121 and the third transition surface 116a are offset, that is, the connecting hole 122 and the third transition surface 116a are smoothly connected. This avoids affecting the tightening effect of the threaded rod when it is set on the third transition surface 116a.

[0074] In some optional embodiments, the first connecting plate 120 is disposed near the first connecting end 113, and the main body 110 includes a second reference surface extending radially Z and passing through the central axis P; the first connecting hole 122a is located on the side of the line connecting the second connecting hole 122b and the third connecting hole 122c near the second reference surface. The second reference surface is a plane formed by the intersection of the radial Z and axial X of the main body 110.

[0075] In these optional embodiments, when the first connecting end 113 is subjected to a head-up load F, the load on the position of the second reference surface on the main body 110 is the largest. The first connecting hole 122a is set close to the second reference surface, so that the threaded rod in the first connecting hole 122a can better absorb the head-up load F, ensuring the stability of the relative position of the bearing seat 100 and the base 200.

[0076] The first connecting hole 122a being located on the side of the line connecting the second connecting hole 122b and the third connecting hole 122c closer to the second reference surface means that the distance between the first connecting hole 122a and the second reference surface is the shortest, and the second connecting hole 122b and the third connecting hole 122c are located on both sides of the line connecting the first connecting hole 122a and the second reference surface. Optionally, the second connecting hole 122b and the third connecting hole 122c are symmetrically distributed on both sides of the line connecting the second reference surface and the first connecting hole 122a. The line connecting the second reference surface and the first connecting hole 122a can be the line connecting the center of the second reference surface and the first connecting hole 122a, or the line connecting the second reference surface and the first connecting hole 122a can be any position within the region where the second reference surface and the first connecting hole 122a are located.

[0077] Please see Figure 6 and Figure 7 , Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point I in the middle. Figure 7 The position of the first connecting area 121 is indicated by a dashed line. The dashed line does not constitute a limitation on the structure of the bearing housing 100 of this application.

[0078] like Figure 6 and Figure 7As shown, the first connecting region 121 is fan-shaped and has an arc-shaped edge 121a, which protrudes towards the second reference surface. When the arc-shaped edge 121a of the first connecting region 121 protrudes towards the second reference surface, the arrangement path of the multiple connecting holes 122 near the arc-shaped edge 121a is an arc protruding towards the second reference surface. This allows the multiple connecting rods within the multiple connecting holes 122 to better absorb the lifting load F received by the first connecting end 113, ensuring the stability of the relative position of the bearing seat 100 and the base 200.

[0079] Optionally, the midpoint of the arc-shaped edge 121a is positioned close to the second reference surface. Positioning the first connecting hole 122a close to the midpoint of the arc-shaped edge 121a further improves the rationality of the layout of the multiple connecting holes 122, making the force on the threaded rods in the multiple connecting holes 122 positioned close to the arc-shaped edge 121a more balanced.

[0080] In some optional embodiments, the first connecting region 121 further includes two linear sides 121b connecting the two ends of the arc-shaped side 121a, the included angle of the two linear sides 121b being 80° to 100°.

[0081] When the included angle between the two linear edges 121b is within the aforementioned range, it avoids both excessively large angles that would result in an overly large first connecting area 121, an overly large first connecting plate 120, an excessive number of connecting holes 122, and an excessive number of threaded rods, leading to excessive weight of the bearing housing 100. Conversely, it avoids excessively small angles that would result in an overly small first connecting area 121, an insufficient number of connecting holes 122, and thus fail to meet the force requirements of the bearing housing 100.

[0082] There are various ways to set the number of connecting holes 122. Optionally, in some embodiments, the number of connecting holes 122 is 9. Five connecting holes 122 are distributed on the arc-shaped side 121a, and three connecting holes 122 are distributed on each of the two linear sides 121b. The arc-shaped side 121a and the linear side 121b share a connecting hole 122 at their intersection. A connecting hole 122 is provided in the area enclosed by the two linear sides 121b and the arc-shaped side 121a.

[0083] In these optional embodiments, five of the nine connecting holes 122 are distributed close to the arc-shaped edge 121a, meaning that a larger number of connecting holes 122 are distributed on the arc-shaped edge 121a. The threaded rods within these five connecting holes 122 can better absorb the lifting load F received by the first connecting end 113. The other four connecting holes 122 are distributed in other locations within the fan-shaped region, making the area of ​​the fan-shaped region similar to the area of ​​the commonly used three-row, three-column distribution of connecting holes 122, without increasing the size of the first connecting plate 120.

[0084] In some optional embodiments, the bearing housing 100 further includes a first reinforcing plate 130 connecting the first connecting plate 120 and the main body 110. The first reinforcing plate 130 is located on one side of the first connecting plate 120 and intersects with the first connecting plate 120. A first connecting region 121 is located between the first connecting end 113 and the first reinforcing plate 130. By providing the first reinforcing plate 130, which is connected to the first connecting plate 120, the structural rigidity of the first connecting plate 120 can be improved, and the deformation of the first connecting plate 120 can be mitigated.

[0085] Optionally, the surfaces of the first reinforcing plate 130 and the first connecting plate 120 are smoothly connected by a first transition surface 117, and the first connecting area 121 and the first transition surface 117 are offset. This offset arrangement of the connecting hole 122 and the first transition surface 117 improves the fastening effect of the threaded rod, which is affected by the threaded rod being located on an irregular surface.

[0086] Optionally, a nut is typically provided on the threaded rod, located in the first connecting area 121. The surface where the nut is located is the surface where the first reinforcing plate 130 and the first connecting plate 120 are smoothly connected by a first transition surface 117. The first connecting area 121 and the first transition surface are offset, so that the connecting hole 122 in the first connecting area 121 is as flat as possible, which can increase the contact area between the nut and the surface of the first connecting plate 120 and improve the fastening effect of the threaded rod.

[0087] Optionally, the first connecting plate 120 and the main body 110 are smoothly connected by the second transition surface 131. The first connecting area 121 and the second transition surface 131 are staggered so that the connecting hole 122 in the first connecting area 121 is as flat as possible, which can increase the contact area between the nut and the surface of the first connecting plate 120 and improve the fastening effect of the threaded rod.

[0088] In practice, the transition surface described above can be set as a chamfer.

[0089] Please refer to the following: Figure 5 and Figure 8 , Figure 8 This is a structural schematic diagram of a bearing housing 100 provided in an embodiment of this application from another perspective.

[0090] like Figure 5As shown in Figure 8, in some optional embodiments, the bearing housing 100 further includes a second connecting plate 140, which is distributed at X-intervals with the first connecting plate 120 along the axial direction of the main body 110. The second connecting plate 140 has a second connecting region 141, in which two or more fixing holes 142 are arranged in a row or column. Optionally, the aforementioned threaded rod is also provided in the fixing holes 142.

[0091] In these alternative embodiments, the stability of the relative position of the bearing housing 100 and the base 200 can be further improved by providing a second connecting plate 140. Since the distance between the second connecting plate 140 and the first connecting end 113 is relatively large, the threaded rod in the fixing hole 142 on the second connecting plate 140 is subjected to a smaller tilting force. The arrangement of multiple connecting holes 122 on the second connecting plate 140 in rows and columns simplifies the fabrication of the second connecting plate 140.

[0092] The second connecting region 141 has two or more fixing holes 142 arranged in a row or column, which means that when at least a part of the fixing hole 142 is located within the second connecting region 141, the fixing hole 142 can be considered to be located within the second connecting region 141. Therefore, fixing holes 142 can be provided on the edge of the second connecting region 141, for example, the center of the fixing hole 142 is located on the edge of the second connecting region 141.

[0093] In some optional embodiments, the bearing housing 100 further includes a second reinforcing plate 150, which intersects the second connecting plate 140 and the main body 110 perpendicularly, and the second reinforcing plate 150 has second connecting regions 141 on both sides along the axial direction X. The second reinforcing plate 150 and the main body 110 intersect perpendicularly, meaning that the central axis P of the second reinforcing plate 150 and the main body 110 are perpendicular, and their outer surfaces intersect. By providing the second reinforcing plate 150, the structural rigidity of the second connecting plate 140 can be improved, and the deformation of the second connecting plate 140 can be mitigated.

[0094] The number of fixing holes 142 in the second connecting area 141 can be configured in various ways. Optionally, the number of fixing holes 142 in the second connecting areas 141 on both sides of the second reinforcing plate 150 is the same, making the stress on the second connecting plate 140 and the second reinforcing plate 150 more uniform. Optionally, each second connecting area 141 is provided with 6 fixing holes 142, arranged in two rows and three columns.

[0095] Optionally, there are two second connecting plates 140, which are symmetrically distributed on both sides of the main body 110 with respect to the central axis P of the main body 110, so that the force on the main body 110 is more balanced.

[0096] In some alternative embodiments, such as Figures 2 to 4 As shown, the bearing housing 100 further includes a lifting lug 160, connected to the main body 110 and disposed near the top 111. The lifting lug 160 is located at one end near the axial direction X of the main body 110 and on the central axis P of the main body 110. In these optional embodiments, when the lifting lug 160 is disposed near the central axis P, the bearing housing 100 can be lifted by the lifting lug 160, which can make the force on the bearing housing 100 more balanced.

[0097] Optionally, the lifting lug 160 includes a lug plate 161 and a lifting hole 162 passing through the lug plate 161, with the lug plate 161 parallel to the plane containing the second reference surface. When lifting the bearing housing 100 using the lifting lug 160, the stability of the bearing housing 100 can be further improved.

[0098] In some optional embodiments, the bearing housing 100 further includes a counterweight mounting position 170 located at the top 111 for mounting a counterweight block, with two or more counterweight mounting positions symmetrically distributed relative to the central axis P of the main body 110. During the lifting process of the bearing housing 100, the force balance of the bearing housing 100 can be ensured by installing counterweight blocks at the counterweight mounting positions 170. The symmetrical distribution of two or more counterweight mounting positions relative to the central axis P of the main body 110 allows counterweight blocks to be installed at different positions, enabling the adjustment of imbalances in the bearing housing 100 under different conditions.

[0099] Optionally, there are four counterweight mounting positions 170, which are symmetrically distributed relative to the central axis P of the main body 110, with two counterweight mounting positions 170 on the same side of the central axis P spaced apart along the length of the main body 110. By providing four counterweight mounting positions 170, the imbalance of the bearing housing 100 can be adjusted from four different directions.

[0100] In some optional embodiments, the bearing housing 100 further includes a drain hole 180, which is disposed near the bottom 112 and extends through the main body 110. When a moving shaft 300 is disposed inside the bearing housing 100, lubricant may leak from the moving shaft 300. By providing the drain hole 180, lubricant can be allowed to leak out from inside the bearing housing 100, thus preventing lubricant from accumulating inside the bearing housing 100.

[0101] Optionally, the leakage hole 180 is located in the plane where the central axis P of the main body 110 is located, that is, the leakage hole 180 is located in the middle of the transverse Y of the main body 110, so that the leakage hole 180 is set close to the bottom 112 of the main body 110, and the lubricant can leak out through the leakage hole 180 as much as possible under the action of gravity.

[0102] Optionally, the drain hole 180 is located near the middle of the main body 110 in its axial direction X. This allows more lubricant to leak out through the drain hole 180.

[0103] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bearing seat (100), characterized in that, The bearing seat (100) comprises: a body part (110) in a cylindrical shape and comprising a top part (111) and a bottom part (112) oppositely arranged along a radial direction (Z) thereof; a first connecting plate (120) connected to an outer surface of the body part (110) and arranged close to the bottom part (112) so that the body part (110) is connected to a designated position through the first connecting plate (120), the designated position comprising a base (200); wherein the first connecting plate (120) comprises a first connecting area (121), and two or more connecting holes (122) are arranged in the first connecting area (121) and extend through the first connecting plate (120), the two or more connecting holes (122) comprising a first connecting hole (122a), a second connecting hole (122b) and a third connecting hole (122c) arranged at intervals along an extension path of an edge of the first connecting area (121) and close to the edge of the first connecting area (121), and a line connecting the first connecting hole (122a), the second connecting hole (122b) and the third connecting hole (122c) forms an obtuse angle.

2. The bearing seat (100) according to claim 1, characterized in that The second connecting hole (122b) is located on a side of the first connecting hole (122a) close to the body part (110), the third connecting hole (122c) is located on a side of the first connecting hole (122a) away from the body part (110), the body part (110) comprises a first connecting end (113) and a second connecting end (114) oppositely arranged along an axial direction (X) of the body part (110), and the first connecting hole (122a) is located on a side of the second connecting hole (122b) toward the first connecting end (113).

3. The bearing seat (100) according to claim 2, characterized in that The first connecting end (113) is provided with a locking part (115) on both sides of a central axis (P) of the body part (110), and the bearing seat (100) is locked in a preset position through the locking part (115).

4. The bearing seat (100) according to claim 2, wherein the first connecting plate (120) is arranged close to the first connecting end (113), the body part (110) comprises a second reference surface extending along the radial direction (Z) and passing through the central axis (P) of the body part (110), and the first connecting hole (122a) is located on a side of a line connecting the second connecting hole (122b) and the third connecting hole (122c) close to the second reference surface.

5. The bearing seat (100) according to claim 4, characterized in that The first connecting area (121) is in a fan-like shape and has an arc-shaped edge (121a) protruding toward the second reference surface.

6. The bearing seat (100) according to claim 5, characterized in that The first connecting area (121) further comprises two linear edges (121b) connected to two ends of the arc-shaped edge (121a), and an included angle between the two linear edges (121b) is 80°-100°.

7. The bearing seat (100) according to claim 6, characterized in that The number of the connecting holes (122) is 9, 5 of which are distributed on the arc-shaped edge (121a), 3 of which are distributed on each of the linear edges (121b), and one of which is shared by the arc-shaped edge (121a) and the linear edge (121b) at their intersection, and one of which is arranged in the area enclosed by the two linear edges (121b) and the arc-shaped edge (121a).

8. The bearing seat (100) according to claim 2, characterized in that Further comprising: The first reinforcing plate (130) is connected to the first connecting plate (120) and the main body part (110), and is arranged on one side of the first connecting plate (120) and intersects with the first connecting plate (120), and the first connecting area (121) is located between the first connecting end (113) and the first reinforcing plate (130).

9. The bearing seat (100) of claim 1, wherein, The first connecting plate (120) and the main body part (110) are connected through a second transition surface (131) for smooth transition, and the first connecting area (121) and the second transition surface (131) are arranged in a staggered manner.

10. The bearing seat (100) of claim 1, wherein Further comprising: The second connecting plate (140) and the first connecting plate (120) are spaced apart along the axial direction (X) of the main body part (110), and the second connecting plate (140) has a second connecting area (141) in which two or more fixing holes (142) are arranged in rows and columns.

11. The bearing seat (100) according to claim 10, characterized in that Further comprising: The second reinforcing plate (150) intersects with the second connecting plate (140) and the main body part (110) perpendicularly, respectively, and the second reinforcing plate (150) is provided with the second connecting area (141) on both sides along the axial direction (X).

12. The bearing seat (100) according to claim 11, characterized in that: The first connecting plate (120) has two, and the two first connecting plates (120) are symmetrically distributed on both sides of the main body part (110) with respect to the center axis (P) of the main body part (110); And / or, the second connecting plate (140) has two, and the two second connecting plates (140) are symmetrically distributed on both sides of the main body part (110) with respect to the center axis (P) of the main body part (110).

13. The bearing seat (100) according to claim 1, characterized in that, Further comprising: The lifting lug (160) is connected to the main body part (110) and arranged close to the top part (111), and the lifting lug (160) is close to one end of the main body part (110) in the axial direction (X) and located on the center axis (P) of the main body part (110).

14. The bearing seat (100) of claim 1, wherein Further comprising: The counterweight mounting position (170) is located on the top part (111) and used for mounting a counterweight, and two or more counterweight mounting positions (170) are symmetrically distributed with respect to the center axis (P) of the main body part (110).

15. The bearing seat (100) of claim 1, wherein Further comprising: The liquid leakage hole (180) is arranged close to the bottom part (112) and penetrates through the main body part (110), The liquid leakage hole (180) is located in a plane in which the central axis (P) of the main body portion (110) is located. And / or, the liquid leakage hole (180) is arranged close to the middle position of the main body portion (110) in the axial direction (X).

16. A wind power unit, characterized in that A bearing housing (100) according to any one of claims 1-15.

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