Plain bearing, shafting arrangement and wind turbine generator set

Abstract

The application relates to a sliding bearing, a shafting structure and a wind turbine generator set, the sliding bearing comprising: a bearing seat having a shaft hole and an inner wall surface enclosing the shaft hole; a plurality of mounting bodies, the plurality of mounting bodies being arranged in the shaft hole and distributed along the circumferential direction of the shaft hole, each mounting body having a first surface and a second surface arranged oppositely in the radial direction of the shaft hole, the first surface being an arc surface and being attached to the inner wall surface; a connecting piece connected with the bearing seat and the mounting bodies and limiting the relative positions of the bearing seat and the mounting bodies; and a plurality of bearing pads arranged in the shaft hole, each bearing pad being connected with the side of the second surface of one of the plurality of mounting bodies. The sliding bearing, the shafting structure and the wind turbine generator set provided by the application have the advantages that the structural form of the sliding bearing has lower requirements for the wall thickness and the machining precision of the bearing seat, and the cost of the sliding bearing as a whole is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of bearing technology, and in particular to a sliding bearing, shaft system structure, and wind turbine generator set. Background Technology

[0002] Currently, due to factors such as increasing turbine capacity, larger bearing size, and increasing load in the wind power industry, wind turbine manufacturers are accelerating the development of sliding bearings to replace rolling bearings. Sliding bearings are a relatively traditional bearing type. In existing shaft systems, the sliding bearing housing requires a planar groove matching the shape of the mounting body, which needs to be partially embedded in the inner wall of the housing. This type of sliding bearing requires a thicker housing wall and higher machining precision, increasing the overall cost. Summary of the Invention

[0003] This application provides a sliding bearing, a shaft system structure, and a wind turbine generator set. The structural form of the sliding bearing has lower requirements for the wall thickness and machining accuracy of its bearing housing, effectively reducing the overall cost of the sliding bearing.

[0004] On one hand, according to an embodiment of this application, a sliding bearing is provided, comprising: a bearing housing having a shaft hole and an inner wall surface surrounding and forming the shaft hole; a mounting body, wherein the number of mounting bodies is plurality of, the plurality of mounting bodies are disposed in the shaft hole and distributed circumferentially along the shaft hole, each mounting body having a first surface and a second surface disposed opposite to each other in the radial direction of the shaft hole, the first surface being an arc-shaped surface and conforming to the inner wall surface; a connecting member, which connects to the bearing housing and the mounting bodies and restricts the relative position of the bearing housing and the mounting bodies; and a bearing bush, wherein a plurality of bearing bushes are disposed in the shaft hole, each bearing bush being connected to the side of the second surface of one of the plurality of mounting bodies.

[0005] According to one aspect of the embodiments of this application, the inner wall surface is an annular surface, and the radius of curvature of the first surface is equal to the radius of curvature of the shaft hole.

[0006] According to one aspect of the embodiments of this application, the connector includes two or more connecting units, and the mounting body is provided with connecting units at both ends in the circumferential direction. The mounting body is detachably connected to the bearing seat through the connecting units.

[0007] According to one aspect of the embodiments of this application, the connecting unit includes one of a bolt, a pin, and a connecting key.

[0008] According to one aspect of the embodiments of this application, the bearing housing is provided with a groove, which is recessed radially from the inner wall surface toward the outer periphery of the bearing housing, and a groove is provided between two adjacent mounting bodies along the circumferential direction.

[0009] According to one aspect of the embodiments of this application, the sliding bearing further includes a fixing member, and the bearing bush is detachably connected to the mounting body through the fixing member.

[0010] According to one aspect of the embodiments of this application, the fastener includes one of a bolt and a pin.

[0011] According to one aspect of the embodiments of this application, the sliding bearing further includes an adjusting component, and the adjusting component is disposed between the bearing bush and the mounting body.

[0012] According to one aspect of the embodiments of this application, the adjusting component is an elastomer or a ball-and-socket structure.

[0013] On the other hand, according to an embodiment of this application, a shaft system structure is proposed, including the above-mentioned sliding bearing; a rotating shaft, which is inserted into the shaft hole and rotates in cooperation with each bearing bush.

[0014] On the other hand, according to an embodiment of this application, a wind turbine generator set is proposed, including the aforementioned shaft system structure.

[0015] According to the sliding bearing, shaft system structure, and wind turbine generator set provided in the embodiments of this application, the sliding bearing includes a bearing housing, a mounting body, a connecting member, and a bearing bush. Multiple mounting bodies are disposed within the shaft hole and distributed circumferentially along the shaft. Each mounting body has a first surface and a second surface in the radial direction of the shaft hole. Since the first surface is an arc-shaped surface that fits against the inner wall surface of the shaft hole formed by the bearing housing, the mounting body is connected to the bearing housing via the connecting member to limit the relative position of the bearing housing and the mounting body. This eliminates the need for a planar groove matching the shape of the mounting body to accommodate it on the inner wall surface of the bearing housing, thereby reducing stress concentration areas in the bearing housing, improving the stress distribution of the bearing housing, and reducing the wall thickness of the bearing housing. This effectively reduces the weight of the bearing housing. The fit and connection method between the mounting body and the bearing housing eliminates the need to fit a virtual spindle rotation center by machining a planar groove on the bearing housing, reducing the machining accuracy requirements of the bearing housing and effectively lowering the overall cost of the sliding bearing. Attached Figure Description

[0016] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the shaft system structure according to an embodiment of this application;

[0019] Figure 3 This is a partial structural schematic diagram of a sliding bearing according to an embodiment of this application;

[0020] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0021] Figure 5 This is a partial structural schematic diagram of a sliding bearing according to an embodiment of this application;

[0022] Figure 6 This is a simplified structural diagram of a bearing housing according to another embodiment of this application.

[0023] 1-Shaft system structure; 101-Rotating shaft;

[0024] 2-Wind turbine foundation;

[0025] 3-Tower;

[0026] 4-Cabin; 401-Cabin Seat;

[0027] 5-Generator; 501-Rotor; 502-Stator;

[0028] 6-Impeller; 601-Hub; 602-Blade;

[0029] 100 - Sliding bearing; X - Axial; Y - Radial; Z - Circumferential;

[0030] 10-Bearing housing; 11-Shaft hole; 12-Inner wall surface; 13-Groove;

[0031] 20 - Mounting body; 21 - First surface; 22 - Second surface;

[0032] 30 - Connector; 31 - Connecting unit;

[0033] 40 - Bearing shell; 50 - Fixing component; 60 - Adjusting component; 70 - Lubrication channel.

[0034] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0035] 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.

[0036] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the sliding bearing, shaft system, or wind turbine generator set 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 based on the specific circumstances.

[0037] To better understand this application, the following will be combined with... Figures 1 to 6 The present application describes in detail the sliding bearing, shaft system structure, and wind turbine generator set according to embodiments thereof.

[0038] like Figure 1 The diagram shown is a structural schematic of a wind turbine generator set according to an embodiment of this application. This application provides a wind turbine generator set, mainly including a wind turbine foundation 2, a tower 3, a nacelle 4, a generator 5, and an impeller 6. The tower 3 is connected to the wind turbine foundation 2, and the nacelle 4 is located at the top of the tower 3. The nacelle 4 has a nacelle base 401, and the generator 5 can be installed inside the nacelle 4 and connected to the nacelle base 4. The generator 5 includes a rotor 501 and a stator 502, and the impeller 6 includes a hub 601 and multiple blades 602 connected to the hub 601. The impeller 6 is connected to the rotor 501 of the generator 5 through its hub 601. When wind force acts on the blades 602, it drives the entire impeller 6 and the rotor 501 of the generator 5 to rotate, causing the rotor 501 of the generator 5 to rotate relative to the stator 502, thereby realizing the conversion of wind energy into electrical energy and meeting the power generation requirements of the wind turbine generator set.

[0039] Please refer to the following: Figure 2 , Figure 2 This is a schematic diagram of the shaft system structure 1 according to one embodiment of this application. To better meet the connection requirements between the impeller 6 and the generator 5, optionally, this application embodiment also provides a shaft system structure 1 for connecting the hub 601 and the rotor 501 to transfer the kinetic energy of the impeller 6 to the generator 5.

[0040] Optionally, the shaft system structure 1 includes a sliding bearing 100 and a rotating shaft 101. The rotating shaft 101 is inserted into the shaft hole 11 of the sliding bearing 100 and rotates in cooperation with the sliding bearing 100. The rotating shaft 101 can rotate relative to the sliding bearing 100.

[0041] When the shaft system structure 1 is applied to a wind turbine generator set, one end of its rotating shaft 101 can be connected to the rotor 501 of the generator 5, and the other end of the rotating shaft 101 can be connected to the hub 601. The sliding bearing 100 can be connected to the nacelle base 401 or the stator 502 of the nacelle 4. This configuration satisfies the connection requirements between the hub 601 and the rotor 501 of the generator 5, while ensuring that under the influence of wind energy, the impeller 6 drives the rotor 501 of the generator 5 to rotate relative to its stator 502, converting wind energy into electrical energy. Each shaft system structure 1 may include two or more sliding bearings 100, distributed along the axial direction X of the rotating shaft 101. The specific number of sliding bearings 100 can be set according to the connection requirements.

[0042] In the existing shaft system structure 1, the sliding bearing requires a planar groove inside the bearing housing that matches the shape of the mounting body. The mounting body needs to be partially embedded in the planar groove of the bearing housing. In actual operation, machining the planar groove of the bearing housing affects the wall thickness of the casting, and the concentrated force causes the wall thickness of the casting to increase. The drawings require high machining accuracy for the planar groove, resulting in high machining costs. The dimensional accuracy is worse than that of a circular inner hole. There is a height difference between the bottom surface of the planar groove and the center of the inner hole, resulting in poor assembly accuracy. In summary, this solution results in a larger wall thickness of the bearing housing and higher machining accuracy requirements, which increases the overall cost of the sliding bearing.

[0043] To solve the above-mentioned technical problems, this application provides a new sliding bearing 100. The sliding bearing 100 can be manufactured and sold separately as an independent component, or it can be used as a component of the shaft system structure 1 in the above embodiments. That is, in the shaft system structure 1 of the above embodiments, at least one sliding bearing 100 can be the sliding bearing 100 of this application.

[0044] Please refer to the following: Figures 2 to 5 , Figure 3 This is a partial structural schematic diagram of a sliding bearing 100 according to an embodiment of this application. Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle. Figure 5 This is a partial structural schematic diagram of a sliding bearing 100 according to an embodiment of this application.

[0045] This application provides a sliding bearing 100, including a bearing housing 10, a mounting body 20, a connecting member 30, and bearing bushes 40. The bearing housing 10 has a shaft hole 11 and an inner wall surface 12 surrounding the shaft hole 11. Multiple mounting bodies 20 are disposed within the shaft hole 11 and distributed along the circumferential direction Z of the shaft hole 11. Each mounting body 20 has a first surface 21 and a second surface 22 oppositely disposed in the radial direction Y of the shaft hole 11. The first surface 21 is an arc-shaped surface and fits against the inner wall surface 12. The connecting member 30 connects to the bearing housing 10 and the mounting bodies 20 and restricts their relative positions. Multiple bearing bushes 40 are disposed within the shaft hole 11, and each bearing bush 40 is connected to the side containing the second surface 22 of one of the multiple mounting bodies 20.

[0046] Optionally, the bearing housing 10 is a supporting part in the shaft system structure. It can be connected to the engine compartment 4 or the stator 502, or it may be connected to the gearbox or other parts. It is the main supporting component for supporting the mounting body 20 and the bearing bush 40, etc. The bearing housing 10 can be an integral structure, a split structure, or other different structures.

[0047] Optionally, the shaft hole 11 can be a circular through hole that extends through the bearing housing 10.

[0048] Optionally, the mounting body 20 can be a block structure that extends a predetermined length in the circumferential direction Z along the shaft hole 11.

[0049] Optionally, the number of mounting bodies 20 can be two, three, four or even more, depending on the number of bearing shells 40 and the circumferential Z-length of each bearing shell 40 in the shaft hole 11.

[0050] Optionally, multiple mounting bodies 20 can be spaced apart and evenly arranged on the circumferential Z direction of the shaft hole 11, with the distance between two adjacent mounting bodies 20 being equal.

[0051] Optionally, the number of mounting bodies 20 is the same as the number of bearing shells 40 and they are set in a one-to-one correspondence.

[0052] Optionally, the first surface 21 of the mounting body 20 may be an arc surface. Optionally, the first surface 21 may partially or completely fit with the inner wall surface 12 that surrounds the shaft hole 11. It may be completely fitted, that is, the two can be in complete contact and abut against each other.

[0053] Optionally, the second surface 22 of the mounting body 20 can be a plane or a curved surface, specifically matching the shape of the surface of the bearing 40 facing the mounting body 20, so as to facilitate the installation of the bearing 40.

[0054] Optionally, multiple bearing shells 40 can be spaced apart from each other in the circumferential Z direction of the shaft hole 11, or they can be arranged sequentially. Each bearing shell 40 is radially opposite to the surface of the mounting body 20 to which it is connected for rotational engagement with the rotating shaft 101.

[0055] The sliding bearing 100 provided in this application embodiment, when used in the shaft system structure 1, allows the rotating shaft 101 to be inserted into the shaft hole 11 and rotated with each bearing shell 40, and the rotating shaft 101 can rotate relative to the bearing shell 40.

[0056] The sliding bearing 100 provided in this application embodiment has a first surface 21 that is arc-shaped and fits against the inner wall surface 12 of the bearing seat 10 to form the shaft hole 11. The mounting body 20 is connected to the bearing seat 10 by the connector 30 to limit the relative position of the bearing seat 10 and the mounting body 20. It is not necessary to set a planar groove on the inner wall surface 12 of the bearing seat 10 that matches the shape of the mounting body 20 and is used to accommodate the mounting body 20 to limit the mounting body 20. This can reduce the stress concentration area of ​​the bearing seat 10, improve the stress condition of the bearing seat 10, thereby reducing the wall thickness of the bearing seat 10 and effectively reducing the weight of the bearing seat 10.

[0057] Furthermore, the mounting body 20 is attached to the inner wall surface 12 of the bearing housing 10 to form the shaft hole 11, and is connected and fixed to each other by the connector 30. Eliminating the need to machine the planar groove of the bearing housing 10 reduces the number of machining steps and significantly lowers machining costs. Meanwhile, in existing sliding bearing designs, the machining of planar grooves for positioning requires multiple planar grooves to fit the virtual rotation center of the shaft 101, demanding high machining accuracy and incurring high machining costs. Eliminating this machining effectively reduces machining costs. Moreover, due to the influence of machining accuracy, sliding bearings 100 generally require adjusting shims to adjust the distance between the sliding friction pair and the planar groove 13 of the bearing housing 10 for assembly centering. This method has low positioning accuracy, low standardization and universality, high technical requirements in the assembly process, and poor efficiency.

[0058] The sliding bearing 100 provided in this embodiment uses the inner wall surface 12 of the shaft hole 11 for positioning, eliminating the need to machine a virtual rotation center for planar fitting. This reduces the machining accuracy requirements of the bearing seat 10 and effectively lowers the overall cost of the sliding bearing 100. Furthermore, the way the arc-shaped first surface 21 of the mounting body 20 is fitted with the inner wall surface 12 of the shaft hole 11 improves the positioning accuracy of the bearing, thus facilitating the standardization and universalization of the sliding bearing 100. In specific designs, it avoids the use of adjusting shims, resulting in high assembly efficiency.

[0059] As an optional implementation, the sliding bearing 100 provided in this application embodiment has an annular inner wall surface 12 that surrounds the shaft hole 11, and the radius of curvature of the first surface 21 is equal to the radius of curvature of the shaft hole 11.

[0060] Optionally, the radius of curvature of the first surface 21 of each of the plurality of mounting bodies 20 is equal to the radius of curvature of the shaft hole 11, or in other words, the radius of curvature of the mounting body 20 is equal to the radius of curvature of the inner wall surface 12 that surrounds and forms the shaft hole 11.

[0061] The sliding bearing 100 provided in this application embodiment makes the inner wall surface 12 annular surface, and the radius of curvature of the first surface 21 is equal to the radius of curvature of the shaft hole 11, so that the bearing seat 10 and the first surface 21 of the mounting body 20 can be machined in one step, thereby improving the positioning accuracy of the sliding bearing 100 and reducing the overall manufacturing cost.

[0062] As an optional implementation, the sliding bearing 100 provided in this application embodiment includes a connecting member 30 comprising two or more connecting units 31. The mounting body 20 is provided with connecting units 31 at both ends in the circumferential direction Z. The mounting body 20 is detachably connected to the bearing seat 10 through the connecting units 31.

[0063] Optionally, each mounting body 20 is connected to the bearing housing 10 via a connector 30. The connector 30 may include two, three, or more connecting units 31, depending on the size of the mounting body 20 and the connection strength between it and the bearing housing 10.

[0064] For example, the number of connecting units 31 included in the connecting member 30 for connecting each mounting body 20 to the bearing housing 10 can be two, and the two connecting units 31 are symmetrically distributed along the circumferential direction Z on the mounting body 20 to ensure the uniformity of the load-bearing capacity at all parts of the mounting body 20.

[0065] The sliding bearing 100 provided in this application embodiment includes two or more connecting units 31 in the connecting member 30 and the mounting body 20 is provided with connecting units 31 at both ends in the circumferential Z direction. This ensures that the mounting body 20 and the bearing seat 10 are connected at multiple points. The multiple connecting units 31 of the connecting member 30 provide lateral sliding resistance to the mounting body 20. When the rotating shaft 101 rotates, it can counteract the force of the rotating working load of the rotating shaft 101 and realize the limitation of the mounting body 20 in the circumferential Z direction.

[0066] Furthermore, the mounting body 20 is detachably connected to the bearing housing 10 via the connecting unit 31. This detachability allows for replacement of the mounting body 20 when a single or multiple mounting bodies 20 are damaged. Additionally, mounting bodies 20 with second surfaces 22 matching the shape of the bearing shell 40 can be selected for connection to the bearing housing 10 according to the requirements of the bearing shell 40, improving versatility and enabling modular design of the bearing housing 10.

[0067] As an optional implementation, the sliding bearing 100 provided in this application embodiment includes a connecting unit 31 comprising one of a bolt, a pin, and a connecting key.

[0068] Optionally, the two or more connecting units 31 included in the connector 30 may all be bolts, pins, or keys. Of course, in some embodiments, the two or more connecting units 31 included in the connector 30 may also be a combination of at least two of bolts, pins, and keys. Any combination that satisfies the requirement for a detachable connection between the mounting body 20 and the bearing housing 10 is acceptable.

[0069] The wind turbine generator set provided in this application embodiment ensures the detachable connection between the mounting body 20 and the bearing seat 10 by including one of bolts, pins and connecting keys in the connecting unit 31. At the same time, the bolts, pins and connecting keys are all standard parts, which is convenient for procurement and replacement.

[0070] As an optional implementation, the sliding bearing 100 provided in this application embodiment also includes a fixing member 50, and the bearing shell 40 is detachably connected to the mounting body 20 through the fixing member 50.

[0071] Optionally, the number of fasteners 50 can be one, two, or even more, as long as they meet the requirements for detachable connection between the bearing bush 40 and the mounting body 20.

[0072] The sliding bearing 100 provided in this application embodiment limits the bearing shell 40 to be detachably connected to the mounting body 20 through the fixing member 50. This allows the sliding bearing 100 to continue to be used when the bearing shell 40 is worn due to long-term sliding contact with the rotating shaft 101, by replacing the corresponding bearing shell 40, without the need for scrapping, thereby improving the overall service life of the sliding bearing 100.

[0073] Furthermore, the above configuration allows for the selection of appropriate bearing shells 40 for connection based on the rotating shaft 101 to be fitted, thereby improving the versatility of the sliding bearing 100.

[0074] Optionally, the fastener 50 is at least partially located inside the bearing shell 40 and is spaced apart from the surface of the bearing shell 40 facing away from the mounting body 20. This arrangement ensures that the fastener 50 is not exposed or protrudes from the second surface 22, guaranteeing the flatness of the second surface 22 and preventing scratches on the outer peripheral surface of the rotating shaft 101.

[0075] As an optional implementation, the sliding bearing 100 provided in this application embodiment includes a fastener 50 consisting of a bolt or a pin.

[0076] Optionally, the fastener 50 may include a bolt, or the fastener 50 may also include a pin, optionally including a pin.

[0077] Optionally, the fastener 50 may extend radially Y along the shaft hole 11, with one end of the fastener 50 in the radial Y direction being inserted into the mounting body 20 and the other end being inserted into the bearing shell 40.

[0078] Optionally, one end of the fastener 50 in the radial Y direction is spaced apart from the first surface 21, and the other end of the fastener 50 in the radial Y direction is spaced apart from the surface of the bearing shell 40 opposite to the mounting body 20. This arrangement avoids interference between the fastener 50 and the mounting of the mounting body 20 and the bearing seat 10, as well as the fit between the bearing shell 40 and the rotating shaft 101.

[0079] The sliding bearing 100 provided in this application embodiment ensures the detachable connection between the bearing shell 40 and the mounting body 20 by including one of bolts and pins in the fixing member 50. At the same time, the bolts and pins are standard parts, which is convenient for procurement and replacement.

[0080] As an optional implementation, the sliding bearing 100 provided in this application embodiment also has a lubrication channel 70, which passes sequentially through the mounting body 20, the fixing member 50 and the bearing shell 40. One end of the lubrication channel 70 is formed on the surface of the bearing shell 40 that is radially opposite to the mounting body 20, so that the sliding bearing 100 can transmit grease to the mating surface of the shaft 101 when it is engaged with the shaft 101.

[0081] As an optional implementation, the sliding bearing 100 provided in this application embodiment further includes an adjusting component 60, and the adjusting component 60 is disposed between the bearing shell 40 and the mounting body 20.

[0082] Optionally, the adjusting component 60 may include an elastomer or a ball-and-socket structure. When an elastomer is included, it may be, for example, a rubber pad or an elastic plastic pad.

[0083] The sliding bearing 100 provided in this application embodiment allows the bearing 40 to be finely adjusted relative to the mounting body 20 by providing an adjustment component 60 between the mounting body 20 and the bearing shell 40, so as to adapt to the deformation of the rotating shaft 101 or the displacement relative to the bearing seat 10.

[0084] As an alternative implementation, when the fastener 50 is included, the fastener 50 is disposed through the adjusting member 60 in the radial Y direction.

[0085] With the above settings, the adjusting component 60 can be limited by the fixing component 50 to prevent the adjusting component 60 from moving relative to the bearing bush 40 and the mounting body 20.

[0086] Please see Figure 6 , Figure 6 This is a simplified structural diagram of a bearing housing 10 according to another embodiment of this application. The sliding bearing 100 provided in this application has a bearing housing 10 with a groove 13. The groove 13 is recessed from the inner wall surface 12 in the radial direction Y towards the outer periphery of the bearing housing 10 and in the circumferential direction Z. A groove 13 is provided between two adjacent mounting bodies 20.

[0087] By providing the groove 13, the weight of the bearing housing 10 can be reduced. Furthermore, the groove 13 separates two adjacent mounting bodies 20, allowing the mounting bodies 20 to be assembled on both sides of the groove 13 during assembly, thus facilitating the determination of their position. Since the groove 13 does not need to mate with the mounting body 20, its machining accuracy and depth are not specifically limited, as long as the strength requirements of the bearing housing 10 are met while minimizing its weight.

[0088] The sliding bearing 100 provided in this application embodiment changes the original cooperation method between the mounting body 20 and the bearing seat 10. The first surface 21 of the mounting body 20 is defined as an arc-shaped surface and fits against the inner wall surface 12 of the bearing seat 10 to form the shaft hole 11. The mounting body 20 and the bearing seat 10 are connected by the connector 30 to limit the relative position of the bearing seat 10 and the mounting body 20. It is not necessary to set a planar groove on the inner wall surface 12 of the bearing seat 10 that matches the shape of the mounting body 20 to accommodate the mounting body 20 to limit the mounting body 20. This can reduce the stress concentration area of ​​the bearing seat 10, improve the stress condition of the bearing seat 10, thereby reducing the wall thickness of the bearing seat 10 and effectively reducing the weight of the bearing seat 10. The cooperation and connection method between the mounting body 20 and the bearing seat 10 does not require fitting a virtual spindle rotation center by machining a planar groove 13 on the bearing seat 10. The machining accuracy requirements of the bearing seat 10 are reduced, effectively reducing the overall cost of the sliding bearing 100.

[0089] The shaft system structure 1 and wind turbine generator set provided in this application embodiment include the sliding bearing 100 provided in the above embodiments, which can not only ensure the conversion of wind energy to electrical energy, but also reduce the cost of the shaft system structure 1 and improve the power generation efficiency of the wind turbine generator set.

[0090] 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 sliding bearing (100), characterized in that, include: The bearing housing (10) has a shaft hole (11) and an inner wall surface (12) that surrounds the shaft hole (11), the inner wall surface (12) being an annular surface; Mounting body (20), there are multiple mounting bodies (20), multiple mounting bodies (20) are disposed in the shaft hole (11) and distributed along the circumferential (Z) direction of the shaft hole (11), each mounting body (20) has a first surface (21) and a second surface (22) disposed opposite to each other in the radial (Y) direction of the shaft hole (11), the first surface (21) is an arc-shaped surface and completely fits the inner wall surface (12). The connector (30) is connected to the bearing housing (10) and the mounting body (20) and restricts the relative positions of the bearing housing (10) and the mounting body (20); A bearing bush (40), a plurality of said bearing bushes (40) are disposed in said shaft hole (11), each said bearing bush (40) being connected to the side of the second surface (22) of one of said mounting bodies (20); The fastener (50) is detachably connected to the mounting body (20) via the bearing shell (40), and the fastener (50) is at least partially located inside the bearing shell (40) and is spaced from the second surface (22) of the bearing shell (40) facing away from the mounting body (20).

2. The sliding bearing (100) according to claim 1, characterized in that, The radius of curvature of the first surface (21) is equal to the radius of curvature of the shaft hole (11).

3. The sliding bearing (100) according to claim 1, characterized in that, The connector (30) includes two or more connecting units (31). The mounting body (20) is provided with the connecting units (31) at both ends of the circumferential direction (Z). The mounting body (20) is detachably connected to the bearing seat (10) through the connecting units (31).

4. The sliding bearing (100) according to claim 3, characterized in that, The connecting unit (31) includes one of a bolt, a pin, and a connecting key.

5. The sliding bearing (100) according to claim 1, characterized in that, The bearing housing (10) is provided with a groove (13). The groove (13) is recessed from the inner wall surface (12) along the radial (Y) direction toward the outer periphery of the bearing housing (10). Along the circumferential (Z) direction, the groove (13) is provided between two adjacent mounting bodies (20).

6. The sliding bearing (100) according to claim 1, characterized in that, The fastener (50) includes one of a bolt or a pin.

7. The sliding bearing (100) according to claim 1, characterized in that, The sliding bearing (100) further includes an adjusting component (60), which is disposed between the bearing bush (40) and the mounting body (20).

8. The sliding bearing (100) according to claim 7, characterized in that, The adjusting component (60) is an elastomer or a ball-and-socket structure.

9. A shaft system structure (1), characterized in that, include: The sliding bearing (100) as described in any one of claims 1 to 8; The rotating shaft (101) is inserted into the shaft hole (11) and rotates in cooperation with each of the bearings (40).

10. A wind turbine generator set, characterized in that, Includes the shaft system structure (1) as described in claim 9.

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