Lubricating device of wind generating set

Abstract

The utility model relates to a lubricating device of a wind generating set. Comprising a support, a bearing mechanism, a low-speed shaft, a first gear, a second gear, an oil way distribution assembly and an engine. Wherein a first through hole is formed in the support, the bearing mechanism is installed in an annular cavity of the first through hole, the bearing mechanism is provided with a second through hole, the low-speed shaft penetrates through the second through hole, one end of the low-speed shaft is connected with the first gear, the first gear is meshed with the second gear, and the second gear is connected with an engine; the oil way distribution assembly is arranged in the support, an oil inlet of the oil way distribution assembly is exposed out of the top of the support, an oil outlet of the oil way distribution assembly is exposed out of the hole wall of the first through hole, the bearing mechanism comprises a fixing ring provided with a plurality of oil holes in the circumferential direction, and the oil outlet of the oil way distribution assembly is opposite to any one of the oil holes. Therefore, manual smearing can be replaced, the problems of time consuming, labor consuming and uneven lubrication are avoided, long-term stable operation of the wind generating set is guaranteed, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine generator sets, and in particular to a lubrication device for wind turbine generator sets. Background Technology

[0002] In wind turbine generators, the low-speed shaft connected to the blades is supported and fixed by bearings. However, with long-term operation, the frictional resistance between the inner and outer rings of the bearings gradually increases. This not only consumes the mechanical energy generated by the rotation of the wind turbine, but also significantly reduces the energy transfer efficiency.

[0003] In related technologies, the traditional method to solve this problem relies on manual addition of lubricating oil. However, this operation is not only time-consuming and labor-intensive, but also inefficient. Furthermore, it is difficult to ensure the uniformity of lubricating oil application, resulting in a significant reduction in lubrication effect and making it difficult to meet the requirements for long-term stable operation of equipment. Utility Model Content

[0004] In view of this, the present disclosure provides a lubrication device for a wind turbine generator set to solve the problems existing in the related art.

[0005] A first aspect of this disclosure provides a lubrication device for a wind turbine generator set, comprising: a support, a bearing mechanism, a low-speed shaft, a first gear, a second gear, an oil distribution assembly, and an engine; wherein, the support has a first through hole, the bearing mechanism is installed in the annular cavity of the first through hole, the bearing mechanism has a second through hole, the low-speed shaft passes through the second through hole, the outer circumferential surface of the low-speed shaft is fixedly connected to the inner wall of the second through hole, one end of the low-speed shaft is connected to the first gear, the first gear meshes with the second gear, and the second gear is connected to the engine; the oil distribution assembly is disposed inside the support and located above the first through hole, the oil inlet of the oil distribution assembly is exposed at the top of the support, the oil outlet of the oil distribution assembly is exposed at the hole wall of the first through hole, the bearing mechanism includes a fixing ring with a plurality of oil holes arranged in the circumferential direction, and the oil outlet of the oil distribution assembly is arranged opposite to any one of the plurality of oil holes.

[0006] The above-mentioned at least one technical solution adopted in the embodiments of this disclosure can achieve the following beneficial effects: The wind turbine generator lubrication device of the embodiments of this disclosure includes a support, a bearing mechanism, a low-speed shaft, a first gear, a second gear, an oil distribution assembly, and an engine; wherein, the support is provided with a first through hole, the bearing mechanism is installed in the annular cavity of the first through hole, the bearing mechanism has a second through hole, the low-speed shaft passes through the second through hole, the outer peripheral surface of the low-speed shaft is fixedly connected to the inner wall of the second through hole, one end of the low-speed shaft is connected to the first gear, the first gear meshes with the second gear, and the second gear is connected to the engine; the oil distribution assembly is disposed inside the support and located above the first through hole, the oil inlet of the oil distribution assembly is exposed at the top of the support, the oil outlet of the oil distribution assembly is exposed at the hole wall of the first through hole, the bearing mechanism includes a fixing ring with a plurality of oil holes arranged in the circumferential direction, and the oil outlet of the oil distribution assembly is arranged opposite to any one of the plurality of oil holes.

[0007] As can be seen, the embodiments of this disclosure achieve efficient lubrication and power transmission through integrated design. Specifically, the engine drives the second gear, which in turn drives the first gear and the low-speed shaft via meshing transmission, forming a stable power transmission path and reducing mechanical energy loss due to friction. The oil distribution component is built into the support, and the exposed oil inlet at the top facilitates connection to the automatic oil supply system. The oil outlet of the oil distribution component is aligned with the circumferential oil hole of the bearing mechanism fixing ring, which can accurately and evenly deliver lubricating oil to the friction surfaces of the inner and outer rings of the bearing. Based on this, the embodiments of this disclosure can replace manual application, avoiding the problems of time-consuming and laborious processes and uneven lubrication, effectively reducing frictional resistance, improving energy transmission efficiency, ensuring long-term stable operation of the wind turbine generator set, and reducing maintenance costs and downtime. Attached Figure Description

[0008] The above and other objects, features, and advantages of this disclosure will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0009] Figure 1 A schematic diagram of the structure of a wind turbine generator lubrication device provided as an exemplary embodiment of this disclosure;

[0010] Figure 2 A schematic diagram of a bearing mechanism provided for an exemplary embodiment of this disclosure;

[0011] Figure 3 A structural schematic diagram of a support cross-section provided for an exemplary embodiment of this disclosure;

[0012] Figure 4A schematic diagram of the structure of a wind turbine generator lubrication device provided as an exemplary embodiment of this disclosure;

[0013] Figure 5 This is a schematic diagram of the structure of a gear lubrication assembly provided for an exemplary embodiment of the present disclosure.

[0014] Reference numerals in the attached drawings: support 1, bearing mechanism 2, fixed ring 21, rotating ring 22, ball bearing 23, rotating ring fixing cover 24, connecting oil supply hole 25, annular fixing groove 26, first oil hole 27, second oil hole 28, low speed shaft 3, first gear 4, engine 5, second gear 6, gear lubrication assembly 7, mounting base 71, third gear 72, oil outlet 73, second oil supply pipe 74, third oil supply pipe 75, oil circuit distribution assembly 8, first oil supply pipe 81, oil groove 82. Detailed Implementation

[0015] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0016] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0017] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc., used in this disclosure are only used to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0018] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0019] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0020] In wind turbine generators, the low-speed shaft connected to the blades is supported and fixed by bearings. However, with long-term operation, the frictional resistance between the inner and outer rings of the bearings gradually increases. This not only consumes the mechanical energy generated by the rotation of the turbine but also significantly reduces energy transfer efficiency. To solve this problem, the traditional method relies on manually adding lubricating oil. However, this operation is not only time-consuming and labor-intensive, but also inefficient. Furthermore, it is difficult to ensure the uniformity of lubricating oil application, resulting in a significant reduction in lubrication effectiveness and failing to meet the requirements for long-term stable operation of the equipment.

[0021] To address the aforementioned problems, this disclosure provides a lubrication device for a wind turbine generator set, comprising a support, a bearing mechanism, a low-speed shaft, a first gear, a second gear, an oil distribution assembly, and an engine. The support has a first through hole, the bearing mechanism is installed within the annular cavity of the first through hole, the bearing mechanism has a second through hole, the low-speed shaft passes through the second through hole, the outer circumferential surface of the low-speed shaft is fixedly connected to the inner wall of the second through hole, one end of the low-speed shaft is connected to the first gear, the first gear meshes with the second gear, and the second gear is connected to the engine. The oil distribution assembly is located inside the support and above the first through hole, with its inlet exposed at the top of the support and its outlet exposed at the wall of the first through hole. The bearing mechanism includes a fixing ring with multiple oil holes arranged circumferentially, and the oil outlet of the oil distribution assembly is opposite to any one of the multiple oil holes.

[0022] As can be seen, the embodiments of this disclosure achieve efficient lubrication and power transmission through integrated design. Specifically, the engine drives the second gear, which in turn drives the first gear and the low-speed shaft via meshing transmission, forming a stable power transmission path and reducing mechanical energy loss due to friction. The oil distribution component is built into the support, and the exposed oil inlet at the top facilitates connection to the automatic oil supply system. The oil outlet of the oil distribution component is aligned with the circumferential oil hole of the bearing mechanism fixing ring, which can accurately and evenly deliver lubricating oil to the friction surfaces of the inner and outer rings of the bearing. Based on this, the embodiments of this disclosure can replace manual application, avoiding the problems of time-consuming and laborious processes and uneven lubrication, effectively reducing frictional resistance, improving energy transmission efficiency, ensuring long-term stable operation of the wind turbine generator set, and reducing maintenance costs and downtime.

[0023] Figure 1 This is a schematic diagram of a lubrication device for a wind turbine generator set, provided as an exemplary embodiment of this disclosure. Figure 1As shown, the system specifically includes: a support 1, a bearing mechanism 2, a low-speed shaft 3, a first gear 4, a second gear 6, an oil distribution assembly 8, and an engine 5. The support 1 has a first through hole, the bearing mechanism 2 is installed in the annular cavity of the first through hole, the bearing mechanism 2 has a second through hole, the low-speed shaft 3 passes through the second through hole, the outer circumferential surface of the low-speed shaft 3 is fixedly connected to the inner wall of the second through hole, one end of the low-speed shaft 3 is connected to the first gear 4, the first gear 4 meshes with the second gear 6, and the second gear 6 is connected to the engine 5. The oil distribution assembly 8 is located inside the support 1, above the first through hole, with the oil inlet of the oil distribution assembly 8 exposed at the top of the support 1 and the oil outlet of the oil distribution assembly 8 exposed at the wall of the first through hole. The bearing mechanism 2 includes a fixing ring with multiple oil holes arranged circumferentially, and the oil outlet of the oil distribution assembly 8 is opposite to any one of the multiple oil holes. Here, one end of the low-speed shaft 3 is connected to the first gear 4, and the other end is connected to the wind turbine. Here, the wind turbine is not... Figure 1 As shown in the figure, the inner wall of the first through hole is in contact with the outer wall of the bearing mechanism 2.

[0024] like Figure 1 As shown, when the wind turbine rotates due to wind force, it can drive the low-speed shaft 3 to rotate synchronously, which in turn drives the first gear 4 connected to the low-speed shaft 3 to rotate. When the first gear 4 rotates, since the first gear 4 and the second gear 6 are meshed, the power can be transmitted to the second gear 6 through gear meshing. That is, the first gear 4 drives the second gear 6 to rotate. Furthermore, when the second gear 6 rotates, it can transmit mechanical energy to the engine 5.

[0025] In some embodiments, when the airflow passes through the blades on the wind turbine connected to the other end of the low-speed shaft 3, a pressure difference is generated on the upper and lower surfaces of the blades to form aerodynamic lift, which drives the blades to rotate the low-speed shaft 3; then, through the meshing transmission of the first gear 4 and the second gear 6 at one end of the low-speed shaft 3, the rotational speed of the low-speed shaft 3 is increased to the operating speed required by the engine 5 according to a predetermined transmission ratio, and the increased mechanical energy is transmitted to the engine 5.

[0026] like Figure 1 As shown, the oil distribution assembly 8 is built into the support 1, with its oil inlet exposed at the top of the support 1. It can be connected to an external lubricating oil pipeline or an automatic oil supply device to provide lubricating oil to the oil distribution assembly 8. When lubricating oil enters the oil distribution assembly 8 from the inlet, it is guided through the internal channel and then output from the outlet to the wall of the first through hole. Simultaneously, since the fixing ring of the bearing mechanism 2 has multiple oil holes circumferentially distributed, the oil outlet of the oil distribution assembly 8 can be positioned opposite any of these oil holes.

[0027] Based on this, when lubricating oil flows out from the oil outlet, it can enter the interior of bearing mechanism 2 through the oil hole, reducing the frictional resistance of bearing mechanism 2 during operation. This design replaces traditional manual lubrication. Through the precise connection of the oil circuit and the design of the circumferential oil hole, it ensures that the lubricating oil evenly covers the friction surface of bearing mechanism 2, reducing mechanical energy loss, improving energy transfer efficiency, and avoiding the time-consuming and laborious nature of manual operation and the problem of uneven lubrication.

[0028] As can be seen, the embodiments of this disclosure achieve efficient lubrication and power transmission through integrated design. Specifically, the engine 5 drives the second gear 6, which in turn drives the first gear 4 and the low-speed shaft 3 via meshing transmission, forming a stable power transmission path and reducing mechanical energy loss due to friction. The oil distribution component 8 is built into the support 1, and the exposed oil inlet at the top facilitates connection to the automatic oil supply system. The oil outlet of the oil distribution component 8 is aligned with the circumferential oil hole of the bearing mechanism 2 fixing ring, which can accurately and evenly deliver lubricating oil to the friction surfaces of the inner and outer rings of the bearing. Based on this, the embodiments of this disclosure can replace manual application, avoiding the problems of time-consuming and laborious processes and uneven lubrication, effectively reducing frictional resistance, improving energy transmission efficiency, ensuring long-term stable operation of the wind turbine generator set, and reducing maintenance costs and downtime.

[0029] Figure 2 This is a schematic diagram of a bearing mechanism provided for an exemplary embodiment of this disclosure. Figure 2 As shown, Figure 2 As shown, the fixing ring 21 includes a first ring body and a second ring body arranged coaxially, such as... Figure 2 As shown, the first ring body is the outer ring of the fixed ring 21, and the second ring body is the inner ring of the fixed ring 21. The inner diameter of the first ring body is larger than the inner diameter of the second ring body. The oil holes include multiple first oil holes 27 and multiple second oil holes 28. The multiple first oil holes 27 are located in the circumferential direction of the first ring body, and the multiple second oil holes 28 are located in the circumferential direction of the second ring body. The first oil holes 27 and the second oil holes 28 correspond one-to-one, and the first oil holes 27 and the corresponding second oil holes 28 are coaxially arranged.

[0030] like Figure 2 As shown, the bearing mechanism 2 also includes a rotating ring fixing cover 24. An annular fixing groove 26 is provided between the first ring body and the second ring body. The rotating ring fixing cover 24 is fastened to the annular fixing groove 26 by an interlocking method and rotates relative to the annular fixing groove 26 in the circumferential direction. The rotating ring fixing cover 24 is provided with a plurality of oil supply holes 25 in the circumferential direction. The plurality of oil supply holes 25, the plurality of first oil holes 27 and the plurality of second oil holes 28 are periodically aligned.

[0031] Therefore, the fitting design of the rotating ring fixing cover 24 and the fixing ring 21 achieves precise assembly through the annular fixing groove 26 formed by the first ring body and the second ring body. This not only ensures the coaxiality of the fixing cover and the fixing ring 21, ensuring the stability of the low-speed shaft 3 during rotation, but also reduces the frictional resistance between them by utilizing the relative rotation structure. This modular fastening method facilitates disassembly and maintenance. During the operation of the bearing mechanism 2, it can prevent lubricating oil leakage and avoid the intrusion of external impurities, enhancing the durability and reliability of the overall structure.

[0032] Meanwhile, the coaxial design of the first oil hole 27 in the circumferential direction of the first ring body and the second oil hole 28 in the circumferential direction of the second ring body in this embodiment, together with the circumferential oil delivery hole 25 of the rotating ring fixing cover 24, forms a three-dimensional lubricating oil transmission path, so that the lubricating oil can be evenly diffused along the radial and axial directions of the bearing, avoiding local lubrication blind spots; the periodic alignment characteristic is based on the rotation of the rotating ring fixing cover 24, realizing the injection of lubricating oil in stages and in multiple directions, which not only ensures the continuity of lubrication, but also prevents leakage and increased energy consumption caused by excessive oil supply, greatly improving the accuracy and efficiency of bearing lubrication, effectively reducing friction loss, extending the service life of the bearing, and ensuring the stable operation of the wind turbine generator set.

[0033] like Figure 2 As shown, the bearing mechanism 2 also includes a rotating ring 22, which is fixedly connected to a rotating ring fixing cover 24. The rotating ring 22 is installed in the annular cavity of the fixing ring 21. The bearing mechanism 2 also includes multiple balls 23. The outer wall of the rotating ring 22 has a first raceway arranged circumferentially, and the inner wall of the second ring body has a second raceway arranged circumferentially. The first and second raceways are arranged opposite each other to form a rolling channel, and the multiple balls 23 are disposed within the rolling channel. The inner wall of the second ring body faces the rotating ring 22. The second raceway is an annular recess corresponding to the second oil hole 28.

[0034] like Figure 1 and Figure 2As shown, when the low-speed shaft 3 rotates under wind force, the rotating ring 22 can rotate together with the low-speed shaft 3. Since the rotating ring 22 and the rotating ring fixing cover 24 are fixedly connected, the rotating ring fixing cover 24 on one side of the rotating ring 22 can be rotated synchronously. The oil supply hole 25 on the outer wall of the rotating ring fixing cover 24 periodically aligns with the first oil hole 27 and the second oil hole 28 as the rotation progresses, forming an instantaneous oil supply channel. When the oil supply hole 25 aligns with the first oil hole 27 and the second oil hole 28, the lubricating oil flowing through the oil outlet of the oil distribution component 8 can sequentially pass through the first oil hole 27, the oil supply hole 25 and the second oil hole 28, and be injected into the raceway between the rotating ring 22 to lubricate the balls 23. As the rotating ring fixing cover 24 periodically aligns, multiple oil supply holes 25 sequentially align with the first oil hole 27 and the second oil hole 28. The lubricating oil is precisely supplied to all balls 23 in a pulsed manner, ensuring that the bearing is lubricated throughout the entire cycle without dead angles. This reduces the need for manual addition of lubricating oil and achieves the purpose of self-lubrication.

[0035] Figure 3 This is a structural schematic diagram of a support cross-section provided for an exemplary embodiment of the present disclosure. Figure 4 This is a schematic diagram of a lubrication device for a wind turbine generator set, provided as an exemplary embodiment of this disclosure. Figure 3 and Figure 4 As shown, the oil distribution assembly 8 includes an oil tank 82 and a first oil supply pipe 81. The oil inlet of the oil tank 82 is exposed on the top of the support 1, and the oil outlet of the oil tank 82 is connected to one end of the first oil supply pipe 81. The other end of the first oil supply pipe 81 is exposed on the wall of the first through hole. The end of the first oil supply pipe 81 exposed in the first through hole is coaxially arranged with the oil inlet of the oil tank 82.

[0036] Therefore, the oil distribution component 8 adopts a combined design of oil trough 82 and first oil delivery pipe 81, achieving efficient transmission and precise guidance of lubricating oil. The exposed oil inlet at the top of the oil trough 82 facilitates connection to external oil supply pipelines, ensuring smooth lubricating oil input; the oil outlet of the oil trough 82 is connected to one end of the first oil delivery pipe 81, forming a closed transmission channel, effectively reducing the risk of leakage and contamination of lubricating oil during transmission. At the same time, the other end of the first oil delivery pipe 81 is exposed on the wall of the first through hole and is coaxially arranged with the oil inlet of the oil trough 82. This layout not only shortens the transmission path of lubricating oil and improves oil supply efficiency, but also allows lubricating oil to be output to the bearing mechanism 2 with stable pressure and direction. In conjunction with the circumferential oil hole of the fixing ring 21, uniform lubrication of the bearing is achieved, thereby reducing friction loss and ensuring the stable operation of the wind turbine generator. At the same time, the coaxial design facilitates assembly and maintenance, improving the reliability and practicality of the overall structure.

[0037] Figure 5 This is a schematic diagram of the structure of a gear lubrication assembly provided for an exemplary embodiment of this disclosure. Figure 5As shown, the wind turbine generator lubrication device also includes a gear lubrication assembly 7, which includes a mounting base 71 and a third gear 72, which meshes with the second gear 6. This allows the third gear 72 to rotate when the second gear 6 rotates.

[0038] like Figure 5 As shown, the gear lubrication assembly 7 also includes a second oil supply pipe 74, and one end of the third gear 72 has a mounting hole; the mounting base 71 is fixedly connected to the other end of the third gear 72, and the third gear 72 has multiple oil passages in the radial direction. The second oil supply pipe 74 is installed in the mounting hole, and the end of the second oil supply pipe 74 located in the mounting hole is connected to the multiple oil passages respectively. Among them, the oil outlet 73 of the oil passage is located between two adjacent gears on the third gear 72.

[0039] like Figure 4 and Figure 5 As shown, the wind turbine generator lubrication device also includes a third oil supply pipe 75 disposed inside the support 1. The other end of the second oil supply pipe 74 included in the gear lubrication assembly 7 is connected to one end of the third oil supply pipe 75. The other end of the third oil supply pipe 75 is exposed outside the wall of the first through hole. The other end of the third oil supply pipe 75 is opposite to the oil outlet 73 of the oil distribution assembly 8. The end of the third oil supply pipe 75 exposed outside the wall of the first through hole is opposite to any one of the plurality of oil holes.

[0040] like Figure 1 , Figure 3 and Figure 5 As shown, the bearing mechanism 2 may include multiple first oil holes 27 and multiple second oil holes 28, with one first oil hole 27 corresponding to one second oil hole 28, and the corresponding first oil holes 27 and second oil holes 28 are coaxially arranged. Therefore, as the rotating ring fixing cover 24 rotates, the oil supply hole 25 can periodically align with the first oil holes 27 and second oil holes 28 to form an instantaneous oil supply channel. At this time, the lubricating oil flowing out through the oil distribution component 8 can enter the bearing mechanism 2 to lubricate the balls 23. Here, it is assumed that the oil supply hole 25, the first oil hole 27, and the second oil hole 28 are aligned when the instantaneous oil supply channel is formed.

[0041] When there is sufficient lubricating oil in the raceway, and when an instantaneous oil supply channel is formed corresponding to the oil hole opposite to the end of the third oil pipe 75 exposed in the first through hole, excess lubricating oil can flow into the third oil pipe 75 through the end of the third oil pipe 75 exposed in the first through hole, then flow into the second oil pipe 74, and finally into the multiple oil passages corresponding to the third gear 72. Thus, when the second gear 6 drives the third gear 72 to rotate, the lubricating oil can flow out from the oil outlet 73 of the oil passage and onto the gear corresponding to the third gear 72. Based on this, since the second gear 6 and the third gear 72 are meshed, the lubricating oil on the surface of the third gear 72 will be transferred to the surface of the second gear 6 due to gear contact. Similarly, since the second gear 6 and the first gear 4 are meshed, the lubricating oil on the surface of the second gear 6 will be transferred to the surface of the first gear 4 due to gear contact. This improves the rotational effect of the first gear 4 and the second gear 6, enhancing the energy transfer efficiency.

[0042] In summary, as Figures 1-5 As shown in the embodiment of this disclosure, when the wind turbine rotates, it can drive the low-speed shaft 3 of the wind turbine to rotate. At the same time as the low-speed shaft 3 rotates, it can drive the rotating ring 22 in the bearing mechanism 2 to rotate. When the rotating ring 22 rotates, it can drive the rotating ring fixing cover 24 to rotate. During the rotation, the multiple oil supply holes 25 in the circumferential direction of the rotating ring fixing cover 24 will periodically form an instantaneous oil supply channel with the first oil hole 27 and the second oil hole 28. When the first oil hole 27 and the second oil hole 28, which are arranged opposite to the other end of the first oil supply pipe 81, form an instantaneous oil supply channel with the oil supply hole 25, the lubricating oil stored in the oil distribution component 8 can enter the bearing mechanism 2 through the first oil supply pipe 81 and the instantaneous oil supply channel to lubricate the multiple balls 23 in the bearing mechanism 2. When there is sufficient lubricating oil in the raceway, and when an instantaneous oil supply channel is formed corresponding to the oil hole that is exposed at the end of the third oil pipe 75 that is exposed at the end of the first through hole, the excess lubricating oil can flow into the third oil pipe 75 through the end of the third oil pipe 75 that is exposed at the end of the first through hole, and then flow into the second oil pipe 74 and into the multiple oil passages corresponding to the third gear 72. Thus, when the second gear 6 drives the third gear 72 to rotate, the lubricating oil can flow out from the oil outlet 73 of the oil passage and flow to the gear corresponding to the third gear 72.

[0043] As can be seen, the embodiments of this disclosure achieve efficient lubrication and power transmission through integrated design. Specifically, the engine drives the second gear, which in turn drives the first gear 4 and the low-speed shaft 3 via meshing transmission, forming a stable power transmission path and reducing mechanical energy loss due to friction. The oil distribution component is built into the support, and the exposed oil inlet at the top facilitates connection to the automatic oil supply system. The oil outlet of the oil distribution component is aligned with the circumferential oil hole of the bearing mechanism fixing ring 21, which can accurately and evenly deliver lubricating oil to the friction surfaces of the inner and outer rings of the bearing. Based on this, the embodiments of this disclosure can replace manual application, avoiding the problems of time-consuming and laborious processes and uneven lubrication, effectively reducing frictional resistance, improving energy transmission efficiency, ensuring long-term stable operation of the wind turbine generator set, and reducing maintenance costs and downtime.

[0044] The above description is merely an embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0045] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A lubrication device for a wind turbine generator set, characterized in that, include: Support, bearing mechanism, low-speed shaft, first gear, second gear, oil distribution assembly and engine; The support has a first through hole, the bearing mechanism is installed in the annular cavity of the first through hole, the bearing mechanism has a second through hole, the low-speed shaft passes through the second through hole, the outer peripheral surface of the low-speed shaft is fixedly connected to the inner wall of the second through hole, one end of the low-speed shaft is connected to the first gear, the first gear meshes with the second gear, and the second gear is connected to the engine. The oil distribution assembly is located inside the support and above the first through hole. The oil inlet of the oil distribution assembly is exposed on the top of the support, and the oil outlet of the oil distribution assembly is exposed on the wall of the first through hole. The bearing mechanism includes a fixing ring with multiple oil holes arranged in the circumferential direction. The oil outlet of the oil distribution assembly is arranged opposite to any one of the multiple oil holes.

2. The wind turbine generator lubrication device according to claim 1, characterized in that, The fixing ring includes a first ring body and a second ring body arranged coaxially, wherein the inner diameter of the first ring body is larger than the inner diameter of the second ring body; The oil hole includes a plurality of first oil holes and a plurality of second oil holes. The plurality of first oil holes are disposed in the circumferential direction of the first ring body, and the plurality of second oil holes are disposed in the circumferential direction of the second ring body. The first oil holes and the second oil holes correspond one-to-one, and the first oil holes and the corresponding second oil holes are coaxially arranged.

3. The wind turbine generator lubrication device according to claim 2, characterized in that, The bearing mechanism also includes a rotating ring fixing cover; An annular fixing groove is provided between the first ring body and the second ring body. The rotating ring fixing cover is fastened to the annular fixing groove by an interlocking method and rotates relative to the annular fixing groove in the circumferential direction. The rotating ring fixing cover is provided with multiple oil supply holes in the circumferential direction, wherein the multiple oil supply holes, the multiple first oil holes and the multiple second oil holes are periodically aligned.

4. The wind turbine generator lubrication device according to claim 3, characterized in that, The bearing mechanism also includes a rotating ring, which is fixedly connected to the rotating ring fixing cover, and the rotating ring is installed in the annular cavity of the fixing ring.

5. The wind turbine generator lubrication device according to claim 4, characterized in that, The bearing mechanism also includes multiple balls; The outer sidewall of the rotating ring is provided with a first raceway arranged in the circumferential direction, and the inner sidewall of the second ring body is provided with a second raceway arranged in the circumferential direction. The first raceway and the second raceway are arranged opposite to each other to form a rolling channel. A plurality of balls are disposed in the rolling channel, wherein the inner sidewall of the second ring body faces the rotating ring.

6. The wind turbine generator lubrication device according to claim 1, characterized in that, The oil distribution assembly includes an oil tank and a first oil supply pipe. The oil inlet of the oil tank is exposed at the top of the support, and the oil outlet of the oil tank is connected to one end of the first oil supply pipe. The other end of the first oil supply pipe is exposed in the wall of the first through hole. The end of the first oil supply pipe exposed in the first through hole is coaxially arranged with the oil inlet of the oil tank.

7. The wind turbine generator lubrication device according to claim 1, characterized in that, The wind turbine generator lubrication device further includes a gear lubrication assembly, which includes a mounting base and a third gear, the third gear meshing with the second gear.

8. The wind turbine generator lubrication device according to claim 7, characterized in that, The gear lubrication assembly further includes a second oil supply pipe, and one end of the third gear has a mounting hole; The mounting base is fixedly connected to the other end of the third gear. The third gear has multiple oil passages in the radial direction. The second oil supply pipe is installed in the mounting hole, and one end of the second oil supply pipe located in the mounting hole is connected to the multiple oil passages respectively.

9. The wind turbine generator lubrication device according to claim 8, characterized in that, The oil outlet of the oil passage is located between two adjacent gears on the third gear.

10. The wind turbine generator lubrication device according to claim 8, characterized in that, The gear lubrication assembly also includes a third oil supply pipe disposed inside the support, and the other end of the second oil supply pipe is connected to one end of the third oil supply pipe; The other end of the third oil supply pipe is exposed outside the wall of the first through hole. The other end of the third oil supply pipe is positioned opposite to the oil outlet of the oil distribution assembly. The end of the third oil supply pipe exposed outside the wall of the first through hole is positioned opposite to any one of the plurality of oil holes.

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