Transmission device, wind generating set, bearing seat and base

Abstract

The utility model relates to a transmission device, a wind generating set, a bearing seat and a base. The transmission device comprises the base and a shaft system assembly. The base has a bottom surface and a support surface opposite to each other. The shafting assembly is arranged on the base and comprises a bearing seat and a main shaft, the bearing seat is provided with a bearing hole and a connecting face, the bearing hole and the connecting face are arranged in a spaced mode, the main shaft is inserted into the bearing hole and matched with the bearing seat in a rotating mode, and the connecting face abuts against the supporting face and is connected with the base. And an included angle is formed between at least part of the connecting surface and the axis of the bearing hole. The reliability of the transmission device is improved, and the service life of the transmission device is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a transmission device, a wind power generator set, a bearing seat and a base. Background Art

[0002] With the development of the wind power industry, the diameter of blades and the power of wind turbines are constantly increasing, which puts higher requirements on the reliability of the transmission devices of wind turbines.

[0003] The transmission device in the prior art usually includes a shaft assembly and a base. When the wind turbine is working, the transmission device will be subjected to a large bending moment load transmitted by the impeller, resulting in a decrease in the connection strength between the shaft assembly and the base, or even a connection breakage, which greatly affects the service life of the wind turbine. Utility Model Content

[0004] The embodiments of the present application provide a transmission device, a wind turbine generator set, a bearing seat and a base, which are beneficial to improving reliability and service life.

[0005] On the one hand, according to an embodiment of the present application, a transmission device is proposed, including: a base, having a relative bottom surface and a supporting surface; a shaft system assembly, arranged on the base, the shaft system assembly including a bearing seat and a main shaft, the bearing seat having a bearing hole and a connecting surface spaced apart from the bearing hole, the main shaft being inserted into the bearing hole and rotatably engaged with the bearing seat, the connecting surface abutting against the supporting surface and connected to the base; wherein, at least a portion of the connecting surface has an angle with the axis of the bearing hole.

[0006] According to one aspect of the embodiment of the present application, at least a portion of the connecting surface is arranged parallel to the bottom surface.

[0007] According to one aspect of the embodiment of the present application, the bottom surface is arranged parallel to the supporting surface.

[0008] According to one aspect of an embodiment of the present application, the bearing seat includes a seat body and a first flange portion and a second flange portion connected to the seat body, the seat body has a bearing hole, the first flange portion and the second flange portion are spaced apart, the connecting surface includes a first surface arranged on the first flange portion and a second surface arranged on the second flange portion, the first surface and the second surface are both against the support surface, wherein at least one of the first surface and the second surface has an angle with the axis.

[0009] According to one aspect of the embodiment of the present application, the angle between the first surface and the axis is the same as the angle between the second surface and the axis.

[0010] According to one aspect of an embodiment of the present application, the seat body includes a first body and a second body spaced apart along the axis, the main shaft is sequentially inserted into the first body and the second body, the first flange is connected to the first body, and the second flange is connected to the second body.

[0011] According to one aspect of an embodiment of the present application, an impeller is configured on one side of the main shaft along the axis, the first flange portion is located between the impeller and the second flange portion, and the first surface and the second surface both have an angle with the axis, or the second surface has an angle with the axis.

[0012] According to one aspect of the embodiment of the present application, the transmission device also includes a fastener, and the bearing seat and the base are connected by the fastener.

[0013] On the other hand, according to an embodiment of the present application, a wind turbine generator set is proposed, comprising: a transmission device as described above; and an impeller connected to one side of the main shaft along its own axial direction.

[0014] On the other hand, according to an embodiment of the present application, a bearing seat is proposed, including: a seat body, having a bearing hole; a flange portion, connected to the seat body and having a connecting surface, at least a portion of the connecting surface has an angle with the axis of the bearing hole.

[0015] On the other hand, according to an embodiment of the present application, a base is proposed for a transmission device, the transmission device includes a bearing seat, the bearing seat has a bearing hole and a connecting surface spaced apart from the bearing hole, at least a portion of the connecting surface has an angle with the axis of the bearing hole, the base includes: a seat body, the seat body has a relative bottom surface and a supporting surface, the supporting surface is configured to support the connecting surface and be connected to the bearing seat, and the bottom surface and the supporting surface are arranged parallel to each other.

[0016] The transmission device, wind turbine generator set, bearing seat and base provided in the embodiments of the present application, the transmission device includes a base and a shaft system assembly, the shaft system assembly includes a bearing seat and a main shaft, the bearing seat has a bearing hole and a connecting surface, the main shaft is inserted into the bearing hole and is rotatably connected to the bearing seat, the connecting surface is against the supporting surface of the base and is connected to the base, when the impeller connected to the main shaft transfers load to the main shaft, by setting at least part of the connecting surface and the axis of the bearing hole to have an angle, the bending moment load decomposed perpendicular to the connecting surface can be reduced to resist the separation tendency of the connecting surface and the supporting surface, which is beneficial to improve the connection strength between the bearing seat and the base, thereby facilitating improving the reliability and service life of the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a partial structure of a transmission device according to an embodiment of the present application;

[0020] Figure 3 for Figure 2 Structural schematic diagrams of the transmission device under different viewing angles;

[0021] Figure 4 This is a schematic structural diagram of a bearing seat according to an embodiment of the present application.

[0022] in:

[0023] 1- Transmission device;

[0024] 10-base; 11-bottom surface; 12-support surface;

[0025] 21-bearing seat; 211-seat body; 212-flange portion; 2121-first flange portion; 2122-second flange portion; 201-bearing hole; 202-connecting surface; 2021-first surface; 2022-second surface;

[0026] 30- fasteners;

[0027] 2-impeller; 210-hub; 220-blade; 3-nacelle; 4-tower;

[0028] X-axis direction. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0030] The directional words appearing in the following description are all directions shown in the figures, and do not limit the transmission device, wind turbine, bearing seat and base of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In order to better understand this application, Figure 1 and Figure 4 The transmission device, wind turbine generator set, bearing seat and base according to the embodiments of the present application are described in detail.

[0032] See also Figure 1 and Figure 2 The embodiment of the present application provides a wind turbine generator set, including a transmission device 1 and an impeller 2. Of course, the wind turbine generator set also includes a nacelle 3 and a tower 4, the tower 4 is connected to the wind turbine foundation, and the nacelle 3 is arranged at the top of the tower 4. The transmission device 1 can be arranged in the nacelle 3, or the transmission device 1 can also be directly connected to the tower 4. The transmission device 1 includes a shaft system assembly and a base, and the transmission device 1 can also include a gearbox and a generator. The impeller 2 includes blades 220 and a hub 210. A plurality of blades 220 are connected to the hub 210. When wind force acts on the blades 220, the entire impeller 2 and the main shaft of the transmission device 1 are driven to rotate, so that the generator rotates to convert wind energy into electrical energy.

[0033] The transmission device 1 is used to convert the wind energy captured by the impeller 2 into mechanical energy, and the generator then converts the mechanical energy received from the transmission device 1 into electrical energy. Specifically, during the operation of the wind turbine generator set, the impeller 2 begins to rotate under the action of the wind load, and the blades 220 rotate the main shaft of the transmission device 1 through the hub 210, and the main shaft drives the input shaft of the gear box to rotate, so that the generator generates electricity, or the mechanical energy of the rotation of the main shaft is directly input into the generator, so that the generator generates electricity, and the entire transmission process realizes the conversion of wind energy into electrical energy.

[0034] The transmission device in the prior art usually includes a shaft assembly and a base. When the wind turbine is working, the transmission device will be subjected to a large bending moment load transmitted by the impeller, resulting in a decrease in the connection strength between the shaft assembly and the base, or even a connection breakage, which greatly affects the service life of the wind turbine.

[0035] Based on the above defects, an embodiment of the present application provides a transmission device 1, which reduces the bending moment load at the connection between the base 10 and the bearing seat 21 by setting at least a portion of the connecting surface 202 to have an angle with the axis of the bearing hole 201, thereby improving the connection strength between the shaft system assembly and the base 10.

[0036] See also Figures 1 to 3 The embodiment of the present application provides a transmission device 1, including a base 10 and a shaft assembly. The base 10 has a bottom surface 11 and a support surface 12 relative to each other. The shaft assembly is arranged on the base 10, and the shaft assembly includes a bearing seat 21 and a main shaft. The bearing seat 21 has a bearing hole 201 and a connecting surface 202 spaced apart from the bearing hole 201. The main shaft is inserted into the bearing hole 201 and rotated with the bearing seat 21. The connecting surface 202 abuts against the support surface 12 and is connected to the base 10. There is an angle between at least a portion of the connecting surface 202 and the axis of the bearing hole 201.

[0037] The base 10 is used to connect the shaft system assembly with the tower 4, or to connect the shaft system assembly with the nacelle 3. Specifically, the base 10 has a bottom surface 11 and a support surface 12 relative to each other along its own height direction Y. The support surface 12 is used to support the shaft system assembly, and the bottom surface 11 is used to be connected to the top of the tower 4 or the nacelle 3. The height direction Y of the base 10 intersects with the axial direction of the main shaft (not shown), and the height direction Y of the base 10 can also be understood as the height direction of the tower 4.

[0038] The shaft system assembly includes a bearing seat 21 and a main shaft. The bearing seat 21 has bearing holes 201 and a connecting surface 202 that are spaced apart along the height direction Y of the base 10. The main shaft can be inserted into the bearing hole 201 and rotatably cooperate with the bearing seat 21. The connecting surface 202 is used to abut against the support surface 12. The bearing seat 21 is connected to the base 10 via the connecting surface 202.

[0039] The shaft system assembly may further include a bearing, which is disposed in the bearing hole 201 and sleeved on the main shaft, and the main shaft is rotatably connected to the bearing seat 21 through the bearing.

[0040] It can be understood that the extension direction of the axis of the bearing hole 201 is the axial direction of the main shaft, which can also be expressed as the axial direction X of the bearing hole 201. There is an angle between at least part of the connecting surface 202 and the axis of the bearing hole 201. It can also be understood that there is an angle between at least part of the connecting surface 202 and the axial direction of the main shaft, or there is an angle between at least part of the connecting surface 202 and the axial direction X.

[0041] The angle between at least a portion of the connection surface 202 and the axis of the bearing hole 201 means that at least a portion of the connection surface 202 is tilted relative to the main axis, and the angle may be 15°, 30°, or other angles.

[0042] One side of the main shaft along the axial direction X may be connected to the hub 210 of the impeller 2, and the other side may be connected to a generator and / or a gearbox.

[0043] The transmission device 1 provided in the embodiment of the present application, when the impeller 2 connected to the main shaft transfers load to the main shaft, by setting at least a portion of the connecting surface 202 of the bearing seat 21 to a structure with an angle with the axis of the bearing hole 201, the bending moment load decomposed into the connecting surface 202 perpendicular to the connecting surface 202 can be reduced to resist the separation tendency of the connecting surface 202 and the supporting surface 12, which is beneficial to improve the connection strength between the bearing seat 21 and the base 10, thereby helping to improve the reliability and service life of the transmission device 1.

[0044] Specifically, the central axis of the hub 210 is parallel to the axial direction of the main shaft, that is, parallel to the axial direction X. The impeller 2 in the transmission device 1 is affected by gravity or aerodynamic loads, and the hub 210 will transfer a certain load to the bearing seat 21 through the main shaft. The aerodynamic load on the bearing seat 21 will transfer the load to the base 10 through the connecting surface 202 and the supporting surface 12, so that the connecting surface 202 will have a tendency to separate relative to the supporting surface 12. By setting at least a portion of the connecting surface 202 of the bearing seat 21 to a structure with an angle with the axis of the bearing hole 201, the central load of the hub 210 can be decomposed into a bending moment perpendicular to the connecting surface 202 to reduce or even eliminate the tendency of the connecting surface 202 to separate relative to the supporting surface 12, which is beneficial to improving the connection strength between the bearing seat 21 and the base 10.

[0045] Optionally, the connection surfaces 202 of the bearing seat 21 may all have an angle with the axis of the bearing hole 201, and some may have an angle with the axis of the bearing hole 201. For example, when the number of bearings is one, the bearing seat 21 is also set as one, and the bearing seat 21 has one connection surface 202, and all of the connection surfaces 202 have an angle with the axis of the bearing hole 201; when the number of bearing seats 21 is set as two or more, in some embodiments, the number of bearing seats 21 may also be set as two or more accordingly, and the number of connection surfaces 202 thereof is also two or more, and at least one of the connection surfaces 202 of the two or more bearing seats 21 has an angle with the axis of the bearing hole 201. In other embodiments, the bearing seat 21 may also be set as one, that is, two or more bearings share one bearing seat 21, and the bearing seat 21 may have one connection surface 202, or may have two or more connection surfaces 202 distributed at intervals.

[0046] As an optional implementation, at least a portion of the connecting surface 202 is arranged parallel to the bottom surface 11 .

[0047] The bottom surface 11 of the base 10 is used to connect with the top of the tower 4 or the nacelle 3. The bottom surface 11 can be understood as a plane parallel to the cross section of the tower 4. The bottom surface 11 can also be understood as parallel to the ground. Figure 2 As shown, the bottom surface 11 may be extended along a first direction Z, the first direction Z intersects with the height direction Y and the axis direction X, and the first direction Z may be expressed as a direction parallel to the ground.

[0048] This arrangement facilitates the design of the angle of the connecting surface 202 of the bearing seat 21 and facilitates the installation and positioning of the bearing seat 21 and the base 10. At the same time, it also helps to ensure the effectiveness of the angle between at least part of the connecting surface 202 and the axis of the bearing hole 201.

[0049] Optionally, a wedge block or other gasket structure may be connected between the connecting surface 202 and the supporting surface 12 to ensure that at least a portion of the connecting surface 202 is arranged parallel to the bottom surface 11 .

[0050] As an optional implementation, the bottom surface 11 and the supporting surface 12 are arranged in parallel.

[0051] Depend on Figure 2 As shown, the bottom surface 11 and the support surface 12 can extend along the first direction Z respectively.

[0052] The connecting surface 202 of the bearing seat 21 is arranged against the supporting surface 12 of the base 10. Since at least a part of the connecting surface 202 is arranged to be parallel to the ground, the bottom surface 11 and the supporting surface 12 are designed to be parallel, which is conducive to achieving the parallel setting of the connecting surface 202 and the ground.

[0053] Furthermore, this arrangement facilitates the processing and manufacturing of the base 10, thereby improving the manufacturing efficiency.

[0054] As an optional embodiment, the bearing seat 21 includes a seat body 211 and a first flange portion 2121 and a second flange portion 2122 connected to the seat body 211, the seat body 211 has a bearing hole 201, the first flange portion 2121 and the second flange portion 2122 are spaced apart, the connecting surface 202 includes a first surface 2021 arranged on the first flange portion 2121 and a second surface 2022 arranged on the second flange portion 2122, the first surface 2021 and the second surface 2022 are both against the support surface 12, wherein at least one of the first surface 2021 and the second surface 2022 has an angle with the axis.

[0055] The first flange portion 2121 and the second flange portion 2122 are spaced apart along the axial direction X. This arrangement is beneficial to improving the connection strength between the bearing seat 21 and the base 10, and is also beneficial to improving the supporting effect of the bearing seat 21 on the main shaft, thereby ensuring the stability of the transmission device 1.

[0056] Optionally, the first flange portion 2121 and the second flange portion 2122 may be respectively provided with a corresponding bearing, so as to improve the stability of the rotating device.

[0057] The first flange part 2121 has a first surface 2021, and the second flange part 2122 has a second surface 2022. Optionally, the first surface 2021 may have an angle with the axis, that is, the first surface 2021 of the first flange part 2121 is inclined to the main axis, which is conducive to reducing or eliminating the separation tendency of the first surface 2021 relative to the support surface 12, thereby facilitating the improvement of the connection strength between the first flange part 2121 and the base 10. Of course, the second surface 2022 may also have an angle with the axis, thereby facilitating the improvement of the connection strength between the second flange part 2122 and the base 10.

[0058] Optionally, the first surface 2021 and the second surface 2022 may be configured to have an angle with the axis to simultaneously improve the connection strength between the first flange portion 2121, the second flange portion 2122 and the base 10. The angle between the first surface 2021 and the axis may be the same as the angle between the second surface 2022 and the axis, or may be different.

[0059] As an optional implementation, the angle between the first surface 2021 and the axis is the same as the angle between the second surface 2022 and the axis.

[0060] By configuring in this manner, the first surface 2021 and the second surface 2022 have the same extension direction, which facilitates the processing and manufacturing of the bearing seat 21 .

[0061] Optionally, the extension direction of the first surface 2021 is the same as the extension direction of the second surface 2022 , which is convenient for processing and manufacturing, and is also beneficial for assembly with the base 10 , thereby improving the assembly efficiency of the transmission device 1 .

[0062] As an optional implementation, the seat body 211 includes a first body and a second body spaced apart along the axis, the main shaft is sequentially inserted into the first body and the second body, the first flange portion 2121 is connected to the first body, and the second flange portion 2122 is connected to the second body.

[0063] The bearing seat 21 includes a first body and a second body spaced apart along the axial direction X. By arranging in this way, the first body and the second body can be provided separately and assembled with the base 10 as required, which is beneficial to improving the flexibility of use of the transmission device 1.

[0064] The first flange portion 2121 is connected to the first body and has a first surface 2021, the second flange portion 2122 is connected to the second body and has a second surface 2022, the first surface 2021 and the second surface 2022 each abut against the support surface 12 of the base 10, optionally, at least one of the first surface 2021 and the second surface 2022 can be set to have an angle with the axis of the bearing hole 201, optionally, at least one of the first surface 2021 and the second surface 2022 is set parallel to the bottom surface 11 of the base 10, optionally, the angles between the first surface 2021 and the second surface 2022 and the axis are the same.

[0065] As an optional implementation, the impeller 2 is arranged on one side of the main shaft along the axis, the first flange portion 2121 is located between the impeller 2 and the second flange portion 2122, and an angle is formed between the second surface 2022 and the axis.

[0066] During the operation of the wind turbine generator set, the rotation of the blades 220 will provide a certain bending moment load to the transmission device 1 through the hub 210. The second surface 2022 of the second flange portion 2122 arranged away from the impeller 2 will be subjected to a larger bending moment load, and the degree of separation between the second flange portion 2122 and the base 10 will be greater than the degree of separation between the first flange portion 2121 and the base 10. Therefore, setting an angle between the second surface 2022 and the axis can reduce the degree of separation between the second flange portion 2122 and the base 10 and improve the connection strength between the second flange portion 2122 and the base 10.

[0067] Of course, both the first surface 2021 and the second surface 2022 have an angle with the axis, which can improve the connection strength between the bearing seat 21 as a whole and the base 10, thereby better improving the reliability and service life of the transmission device.

[0068] As an optional implementation, the transmission device 1 further includes a fastener 30 , and the bearing seat 21 is connected to the base 10 via the fastener 30 .

[0069] The fastener 30 is disposed between the bottom surface 11 of the bearing seat 21 and the support surface 12 of the base 10, and is used to connect the bearing seat 21 and the base 10. By providing the fastener 30, it is beneficial to ensure the connection strength and reliability of the bearing seat 21 and the base 10, and prevent the two from being separated.

[0070] Since the transmission device 1 provided in the embodiment of the present application is conducive to reducing the separation tendency of the connecting surface 202 relative to the supporting surface 12, it is conducive to reducing the influence of the load on the fastener 30 therebetween, and it is conducive to increasing the preload force of the fastener 30 and the alternating stress it is subjected to, so that the fastener 30 here is easier to meet the strength requirements, thereby facilitating increasing the service life of the fastener 30, and further facilitating increasing the connection strength between the bearing seat 21 and the base 10.

[0071] It is understandable that the impeller 2 in the transmission device 1 is affected by gravity or aerodynamic loads, and this part of the load will be transmitted to the bearing seat 21 through the main shaft, and the bearing seat 21 will then transmit it to the base 10 through the fastener 30. Since the separation tendency of the connecting surface 202 and the supporting surface 12 is reduced, it is beneficial to improve the fatigue life of the fastener 30.

[0072] Optionally, there are multiple fasteners 30, and the fasteners 30 may include structures such as anchor bolts, high-strength bolts, and anchor bolts.

[0073] Furthermore, since the transmission device 1 provided in the embodiment of the present application is beneficial to reducing the fatigue service life of the fastener 30, when designing the fastener 30, it is convenient to calculate its limit or fatigue evaluation, thereby reducing the design difficulty and the manufacturing cost.

[0074] The embodiment of the present application further provides a wind turbine generator set, comprising a transmission device 1 and an impeller 2 as provided in the above embodiments, connected to one side of the main shaft along its own axial direction.

[0075] Since the transmission device 1 provided in the embodiment of the present application can improve its own reliability and service life, the reliability and service life of the wind turbine generator set can be improved, thereby helping to improve economic efficiency.

[0076] like Figure 4 As shown, the embodiment of the present application further provides a bearing seat 21, including a seat body 211 and a flange portion 212. The seat body 211 has a bearing hole 201. The flange portion 212 is connected to the seat body 211 and has a connecting surface 202, and at least a portion of the connecting surface 202 has an angle with the axis of the bearing hole 201.

[0077] In order to better improve the reliability and service life of the transmission device 1, the embodiment of the present application also provides a bearing seat 21, which can be produced and sold separately as an independent component. Of course, it can also be used in the transmission device 1 and serve as a component of the transmission device 1.

[0078] The bearing hole 201 is used for sleeve mounting the main shaft of the transmission device 1 . The bearing seat 21 includes a seat body 211 and a flange portion 212 . The seat body 211 is used for connecting with the main shaft, and the flange portion 212 is used for connecting with the base 10 of the transmission device 1 .

[0079] Exemplarily, the flange portion 212 includes a first flange portion 2121 and a second flange portion 2122 that are spaced apart along the axis (axis direction X) of the bearing hole 201, and the first flange portion 2121 and the second flange portion 2122 are connected to the same seat body 211. The first flange portion 2121 has a first surface 2021, and the second flange portion 2122 has a second surface 2022, and at least one of the first surface 2021 and the second surface 2022 has an angle with the axis of the bearing hole 201.

[0080] Optionally, the seat body 211 may also include a first body and a second body spaced apart along the axis (axial direction X) of the bearing hole 201, and the flange portion 212 includes a first flange portion 2121 and a second flange portion 2122 spaced apart along the axis (axial direction X) of the bearing hole 201, the first flange portion 2121 is connected to the first body, and the second flange portion 2122 is connected to the second body.

[0081] Optionally, the seat body 211 may further include a first body and a second body spaced apart along the axis (axis direction X) of the bearing hole 201 , and the first body and the second body are commonly connected to the same flange portion 212 .

[0082] Please continue reading Figure 2 and Figure 3 The embodiment of the present application also provides a base 10 for a transmission device 1, the transmission device 1 includes a bearing seat 21, the bearing seat 21 has a bearing hole 201 and a connecting surface 202 spaced apart from the bearing hole 201, at least a portion of the connecting surface 202 has an angle with the axis of the bearing hole 201, the base 10 includes a seat body, the seat body has a relative bottom surface 11 and a supporting surface 12, the supporting surface 12 is configured to support the connecting surface 202 and be connected to the bearing seat 21, and the bottom surface 11 and the supporting surface 12 are arranged in parallel.

[0083] The bottom surface 11 is used to be connected to the top of the tower 4 or to the nacelle 3. The bottom surface 11 is parallel to the ground, that is, it has an angle with the axial direction X of the bearing hole 201 of the bearing seat 21, that is, it has an angle with the axial direction of the main shaft and the central axis of the hub 210.

[0084] The base 10 provided in the embodiment of the present application can be used for the transmission device 1. By setting the bottom surface 11 and the support surface 12 as a parallel structure, at least a portion of the connecting surface 202 connected to the support surface 12 can be set parallel to the bottom surface 11, so as to ensure that there is an angle between at least a portion of the connecting surface 202 and the axis of the bearing hole 201, which is beneficial to ensure that the transmission device 1 can improve the reliability and service life.

[0085] Furthermore, this arrangement facilitates the processing and manufacturing of the base 10 and also facilitates the connection and assembly of the base 10 and the bearing seat 21 .

[0086] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present 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 transmission device (1), characterized in that: include: A base (10) having a bottom surface (11) and a supporting surface (12) opposite to each other; A shaft system component is arranged on the base (10), the shaft system component comprises a bearing seat (21) and a main shaft, the bearing seat (21) has a bearing hole (201) and a connecting surface (202) spaced apart from the bearing hole (201), the main shaft is inserted into the bearing hole (201) and rotatably cooperates with the bearing seat (21), and the connecting surface (202) abuts against the supporting surface (12) and is connected to the base (10); Wherein, at least a portion of the connecting surface (202) forms an angle with the axis of the bearing hole (201).

2. The transmission device (1) according to claim 1, characterized in that At least a portion of the connecting surface (202) is arranged parallel to the bottom surface (11).

3. The transmission device (1) according to claim 2, characterized in that The bottom surface (11) and the supporting surface (12) are arranged in parallel.

4. The transmission device (1) according to any one of claims 1 to 3, characterized in that: The bearing seat (21) comprises a seat body (211) and a first flange portion (2121) and a second flange portion (2122) connected to the seat body (211); the seat body (211) has the bearing hole (201); the first flange portion (2121) and the second flange portion (2122) are spaced apart; the connecting surface (202) comprises a first surface (2021) arranged on the first flange portion (2121) and a second surface (2022) arranged on the second flange portion (2122); the first surface (2021) and the second surface (2022) are both against the supporting surface (12); and at least one of the first surface (2021) and the second surface (2022) has an angle with the axis.

5. The transmission device (1) according to claim 4, characterized in that The angle between the first surface (2021) and the axis is the same as the angle between the second surface (2022) and the axis.

6. The transmission device (1) according to claim 4, characterized in that The seat body (211) includes a first body and a second body spaced apart along the axis, the main shaft is sequentially inserted into the first body and the second body, the first flange portion (2121) is connected to the first body, and the second flange portion (2122) is connected to the second body.

7. The transmission device (1) according to claim 4, characterized in that The main shaft is provided with an impeller (2) on one side along the axis, the first flange portion (2121) is located between the impeller (2) and the second flange portion (2122), the first surface (2021) and the second surface (2022) both have an angle with the axis, or the second surface (2022) has an angle with the axis.

8. The transmission device (1) according to claim 1, characterized in that The transmission device (1) further comprises a fastener (30), and the bearing seat (21) and the base (10) are connected via the fastener (30).

9. A wind turbine generator set, characterized in that: include: The transmission device (1) according to any one of claims 1 to 8; The impeller (2) is connected to one side of the main shaft along its own axial direction.

10. A bearing seat (21), characterized in that: include: The seat body (211) has a bearing hole (201); The flange portion (212) is connected to the seat body (211) and has a connecting surface (202), and at least a portion of the connecting surface (202) forms an angle with the axis of the bearing hole (201).

11. A base (10) for a transmission device (1), the transmission device (1) comprising a bearing seat (21), the bearing seat (21) having a bearing hole (201) and a connecting surface (202) spaced apart from the bearing hole (201), at least a portion of the connecting surface (202) having an angle with an axis of the bearing hole (201), characterized in that: The base (10) comprises: A seat body, the seat body having a relative bottom surface (11) and a support surface (12), the support surface (12) being configured to support the connection surface (202) and to be connected to the bearing seat (21), the bottom surface (11) and the support surface (12) being arranged in parallel.

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