Bearing lubricating structure and wind power gear box

Abstract

The utility model relates to the technical field of gear boxes, and particularly discloses a bearing lubricating structure and a wind power gear box, the bearing lubricating structure comprises a bearing seat, a supporting bottom shell, an oil baffle plate and a driving device; the bearing seat is arranged in the gear box body, the rotating bearing is arranged on the bearing seat, the supporting bottom shell is arranged on the side wall of the bearing seat and located below the rotating bearing, and the oil baffle plate is movably arranged on the supporting bottom shell in the vertical direction, so that an oil storage groove can be defined by the bearing seat, the supporting bottom shell and the oil baffle plate; the driving device is in transmission connection with the oil baffle plate and used for driving the oil baffle plate to move in the vertical direction, and the driving device is arranged on the outer side of the gear box body. The driving device can drive the oil baffle plate in the gear box body to move up and down, so that lubricating oil in the oil storage groove can infiltrate or break away from the lower end of the swivel bearing, the swivel bearing is lubricated, and the swivel bearing is prevented from being damaged due to no lubrication or poor lubrication condition.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a bearing lubrication structure and a wind power gear box. Background Art

[0002] As a renewable energy source, wind power offers significant advantages for power generation. Compared to other energy sources such as thermal, solar, and hydropower, it boasts lower construction costs, smaller footprints, and easier maintenance. The wind turbine gearbox is a crucial mechanical component in a wind turbine generator. Its primary function is to transmit the power generated by the wind rotor to the generator, ensuring it maintains a corresponding rotational speed.

[0003] Currently, the bearings in wind turbine gearboxes must be lubricated by immersing them in lubricating oil. This existing technology requires power from a power source to activate the motor oil pump, which then supplies a fixed amount of lubricating oil to the bearings to ensure proper lubrication and operation. However, when there is no power on the tower, and the wind rotor is transmitting power to the bearings under the action of wind, the bearings in the wind turbine gearbox are either unlubricated or poorly lubricated, making them susceptible to bearing damage. Damaged bearings require the wind turbine gearbox to be removed from the rack for repair, resulting in high repair costs, long maintenance cycles, and significant power generation losses. Utility Model Content

[0004] The purpose of the present utility model is to provide a bearing lubrication structure and a wind turbine gearbox to solve the problems in the prior art where the bearings in the wind turbine gearbox are not lubricated or are poorly lubricated, and are prone to bearing damage. After the bearings are damaged, the wind turbine gearbox has to be removed from the shelf for repair, which results in high maintenance costs, long cycles, and large power generation losses.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, the utility model provides a bearing lubrication structure for lubricating a rotating bearing in a gear box body, the bearing lubrication structure comprising:

[0007] A bearing seat, the bearing seat is arranged in the gear box body, and the rotary bearing is arranged on the bearing seat;

[0008] A supporting bottom shell and an oil baffle plate, wherein the supporting bottom shell is provided on the side wall of the bearing seat and is located below the rotary bearing; the oil baffle plate is movably provided on the supporting bottom shell in a vertical direction so that the bearing seat, the supporting bottom shell and the oil baffle plate can enclose an oil storage tank, and the oil storage tank is used to store lubricating oil;

[0009] A driving device is connected to the oil baffle in a transmission manner and is used to drive the oil baffle to move along the vertical direction; the driving device is arranged on the outside of the gear box body.

[0010] As an optional solution to the above-mentioned bearing lubrication structure, the bearing lubrication structure further includes a transmission assembly, the driving device is connected to the transmission assembly via the gear box, and the driving end of the transmission assembly is connected to the oil baffle.

[0011] As an optional solution to the above-mentioned bearing lubrication structure, the transmission assembly includes a transmission gear, and a rack is provided on the side wall of the oil baffle. The transmission gear is meshed and connected to the rack, and the rack extends along the vertical direction. The driving device drives the transmission gear to rotate so that the rack drives the oil baffle to move along the vertical direction.

[0012] As an optional solution to the above-mentioned bearing lubrication structure, the transmission assembly includes a transmission cam, the bottom wall of the oil baffle is provided with an abutment portion, the transmission cam is located below the abutment portion and abuts against the abutment portion, and the driving device drives the transmission cam to rotate to drive the oil baffle to move along the vertical direction.

[0013] As an optional solution to the above-mentioned bearing lubrication structure, the transmission assembly includes an eccentric wheel, the bottom wall of the oil baffle is provided with an abutment portion, the eccentric wheel is located below the abutment portion and abuts against the abutment portion, and the driving device drives the eccentric wheel to rotate eccentrically.

[0014] As an optional solution to the above-mentioned bearing lubrication structure, the driving device is detachably connected to the transmission assembly.

[0015] As an optional solution to the above-mentioned bearing lubrication structure, the supporting bottom shell is provided with a slide groove, the oil baffle is provided with a slide rail, the slide rail is slidably arranged in the slide groove, and the slide rail and the slide groove are both extended along the vertical direction.

[0016] As an optional solution to the above-mentioned bearing lubrication structure, the supporting bottom shell is provided with a stopper, and the stopper is used to stop the oil baffle downward.

[0017] As an optional solution to the above-mentioned bearing lubrication structure, the driving device is a Z-shaped handle or a disc-shaped handle.

[0018] On the other hand, the utility model provides a wind turbine gearbox, comprising the bearing lubrication structure as described above, the wind turbine gearbox further comprising a gearbox body and a rotary bearing, the bearing lubrication structure and the rotary bearing both being arranged in the gearbox body.

[0019] The beneficial effects of the utility model are:

[0020] The bearing lubrication structure comprises a bearing seat, a supporting bottom shell, an oil baffle and a driving device. The gear train is then moved downwards and the gear train is moved downwards to the bottom of the gear train, whereby the gear train is moved downwards and the gear train is moved downwards to the bottom of the gear train. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a wind turbine gearbox provided by an embodiment of the present utility model;

[0022] Figure 2 A partial cross-sectional view of a bearing lubrication structure provided by an embodiment of the present utility model;

[0023] Figure 3 A cross-sectional view of the bearing lubrication structure provided by the embodiment of the utility model Figure 1 ;

[0024] Figure 4 A cross-sectional view of the bearing lubrication structure provided by the embodiment of the utility model Figure 2 ;

[0025] Figure 5 A cross-sectional view of the bearing lubrication structure provided by the embodiment of the utility model Figure 3 ;

[0026] Figure 6 A cross-sectional view of the bearing lubrication structure provided by the embodiment of the utility model Figure 4 .

[0027] In the picture:

[0028] 1. Oil baffle; 11. Oil storage tank; 12. Rack; 13. Abutment portion; 2. Drive device; 3. Transmission assembly; 31. Transmission gear; 32. Transmission cam; 33. Eccentric wheel; 4. Gear box; 5. Rotary bearing; 6. Bearing seat; 7. Support bottom shell; 71. Stop portion; 72. Inner wall. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] like Figures 1 to 6 As shown, this embodiment provides a bearing lubrication structure for lubricating the rotary bearing 5 in the gear box body 4.

[0034] The bearing lubrication structure includes a bearing seat 6, a support bottom shell 7, an oil baffle and a drive device 2. The bearing seat 6 is arranged in the gear box body 4, the rotary bearing 5 is arranged on the bearing seat 6, the support bottom shell 7 is arranged on the side wall of the bearing seat 6, and is located below the rotary bearing 5. The oil baffle is movably arranged on the support bottom shell 7 in the vertical direction so that the bearing seat 6, the support bottom shell 7 and the oil baffle can be combined to form an oil storage tank 11. The oil storage tank 11 is used to store lubricating oil, so that the lubricating oil in the oil storage tank 11 can change its spatial position under the movement of the oil baffle, so that the lubricating oil infiltrates the rotary bearing 5 or flows into the bottom of the gear body. The drive device 2 is connected to the oil baffle for driving the oil baffle. The plate moves in the vertical direction, and the driving device 2 is arranged on the outside of the gear box body 4, so that the staff can manually drive the driving device 2, so that the driving device 2 can drive the oil baffle plate in the gear box body 4 to move up and down, so that the lubricating oil in the oil storage tank 11 can penetrate or escape from the lower end position of the rotating bearing 5, thereby realizing the lubrication of the rotating bearing 5, thereby preventing the rotating bearing 5 from being damaged due to lack of lubrication or poor lubrication, and further avoiding the problem that the wind turbine gearbox can only be removed from the shelf for maintenance after the rotating bearing 5 is damaged, resulting in high maintenance costs, long cycles, and large power generation losses.

[0035] Furthermore, the bearing lubrication structure also includes a transmission assembly 3, the drive device 2 is connected to the transmission assembly 3 via the gear box body 4, and the driving end of the transmission assembly 3 is connected to the oil baffle 1, so that the torque can be transmitted through the setting of the transmission assembly 3, thereby facilitating the setting of the drive device 2 and the oil baffle 1 in different positions. Among them, the drive device 2 is detachably connected to the transmission assembly 3, so that when the oil baffle 1 is not driven to move, the drive device 2 can be conveniently disassembled and stored. Optionally, the drive device 2 is a Z-shaped handle or a disc-shaped handle. The staff can hold the Z-shaped handle to drive the oil baffle 1 by shaking, or hold the disc-shaped handle to drive the oil baffle 1 by rotating. The operation is simple, convenient and labor-saving.

[0036] In one embodiment, if Figure 3 and Figure 4 As shown, the transmission assembly 3 includes a transmission gear 31, and a rack 12 is provided on the side wall of the oil baffle 1. The transmission gear 31 is meshed and connected to the rack 12. The rack 12 is extended in the vertical direction. The driving device 2 drives the transmission gear 31 to rotate so that the rack 12 drives the oil baffle 1 to move in the vertical direction. The transmission gear 31 is driven to rotate by the driving device 2, so that the transmission gear 31 drives the rack 12 to move, thereby realizing the vertical movement of the oil baffle 1 driven by the rack 12. Optionally, the rack 12 can be set on different sides of the oil baffle 1 as needed to meet the actual working conditions. In another embodiment, as Figure 5As shown, the transmission assembly 3 includes a transmission cam 32, and the bottom wall of the oil baffle 1 is provided with an abutment portion 13. The transmission cam 32 is located below the abutment portion 13 and abuts against the abutment portion 13. The driving device 2 drives the transmission cam 32 to rotate to drive the oil baffle 1 to move in the vertical direction. Therefore, when the driving device 2 drives the transmission cam 32 to rotate, the convex portion of the transmission cam 32 rotates to lift the abutment portion 13, and the abutment portion 13 can drive the oil baffle 1 to rise in the vertical direction. At the same time, the convex portion of the transmission cam 32 rotates to disengage from the abutment portion 13, and the abutment portion 13 can drive the oil baffle 1 to fall downward in the vertical direction. In another embodiment, as Figure 6 As shown, the transmission assembly 3 includes an eccentric wheel 33, and the bottom wall of the oil baffle 1 is provided with an abutment portion 13. The eccentric wheel 33 is located below the abutment portion 13 and abuts against the abutment portion 13. The driving device 2 drives the eccentric wheel 33 to rotate eccentrically, so that when the eccentric wheel 33 is driven to rotate eccentrically by the driving device 2, the eccentric part of the eccentric wheel 33 is in the process of rotating to lift the abutment portion 13, and the abutment portion 13 can drive the oil baffle 1 to rise upward in the vertical direction. At the same time, when the eccentric part of the eccentric wheel 33 is in the process of rotating to disengage from the abutment portion 13, the abutment portion 13 can drive the oil baffle 1 to drop downward in the vertical direction.

[0037] like Figure 2 As shown, the support bottom shell 7 is provided with a slide groove, and the oil baffle 1 is provided with a slide rail. The slide rail slides in the slide groove, and both the slide rail and the slide groove extend in the vertical direction. Therefore, the provision of the slide rail and the slide groove can enhance the stability of the movement of the oil baffle 1, and prevent the oil baffle 1 from deviating during movement, which would cause the rotating bearing 5 to be unable to be soaked in lubricating oil. Specifically, the inner side wall 72 of the support bottom shell 7 that contacts the oil baffle 1 is recessed to form the slide groove, and the side wall of the oil baffle 1 that contacts the support bottom shell 7 is protruding to form the slide rail. Optionally, the support bottom shell 7 is provided with a stopper 71, which is used to stop the oil baffle 1 downward, thereby preventing the oil baffle 1 from rising excessively and separating from the support bottom shell 7.

[0038] The present embodiment also provides a wind turbine gearbox, including the bearing lubrication structure as described above. The wind turbine gearbox also includes a gearbox body 4 and a rotating bearing 5. The bearing lubrication structure and the rotating bearing 5 are both arranged on the gearbox body 4. By using the bearing lubrication structure as described above, the wind turbine gearbox can drive the oil baffle 1 in the gearbox body 4 to move up and down via the driving device 2 when there is no power supply on the tower and the wind wheel transmits power to the rotating bearing 5 under the action of wind, so that the lubricating oil in the oil storage tank 11 can penetrate or escape from the lower end position of the rotating bearing 5, thereby realizing lubrication of the rotating bearing 5, preventing the rotating bearing 5 from being damaged due to lack of lubrication or poor lubrication, and further avoiding the problem that the wind turbine gearbox can only be taken off the shelf for maintenance after the rotating bearing 5 is damaged, resulting in high maintenance costs, long cycles, and large power generation losses.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A bearing lubrication structure for lubricating a rotating bearing (5) in a gear box (4), characterized in that: The bearing lubrication structure comprises: A bearing seat (6), wherein the bearing seat (6) is arranged in the gear box body (4), and the rotary bearing (5) is arranged on the bearing seat (6); A supporting bottom shell (7) and an oil baffle plate (1), wherein the supporting bottom shell (7) is arranged on the side wall of the bearing seat (6) and is located below the rotary bearing (5); the oil baffle plate (1) is movably arranged on the supporting bottom shell (7) in a vertical direction so that the bearing seat (6), the supporting bottom shell (7) and the oil baffle plate (1) can be enclosed to form an oil storage groove (11), and the oil storage groove (11) is used to store lubricating oil; A driving device (2) is connected to the oil baffle (1) in a transmission manner and is used to drive the oil baffle (1) to move along the vertical direction; the driving device (2) is arranged on the outside of the gear box (4).

2. The bearing lubrication structure according to claim 1, characterized in that: The bearing lubrication structure further comprises a transmission assembly (3), the drive device (2) is connected to the transmission assembly (3) via the gear box (4), and the drive end of the transmission assembly (3) is connected to the oil baffle (1).

3. The bearing lubrication structure according to claim 2, characterized in that: The transmission assembly (3) includes a transmission gear (31), a rack (12) is provided on the side wall of the oil baffle (1), the transmission gear (31) is meshedly connected to the rack (12), and the rack (12) is extended along the vertical direction. The driving device (2) drives the transmission gear (31) to rotate, so that the rack (12) drives the oil baffle (1) to move along the vertical direction.

4. The bearing lubrication structure according to claim 2, characterized in that: The transmission assembly (3) includes a transmission cam (32); the bottom wall of the oil baffle (1) is provided with an abutment portion (13); the transmission cam (32) is located below the abutment portion (13) and abuts against the abutment portion (13); the driving device (2) drives the transmission cam (32) to rotate to drive the oil baffle (1) to move along the vertical direction.

5. The bearing lubrication structure according to claim 2, characterized in that: The transmission assembly (3) includes an eccentric wheel (33), the bottom wall of the oil baffle (1) is provided with an abutment portion (13), the eccentric wheel (33) is located below the abutment portion (13) and abuts against the abutment portion (13), and the driving device (2) drives the eccentric wheel (33) to rotate eccentrically.

6. The bearing lubrication structure according to claim 2, characterized in that: The driving device (2) is detachably connected to the transmission assembly (3).

7. The bearing lubrication structure according to claim 1, characterized in that: The supporting bottom shell (7) is provided with a slide groove, and the oil baffle (1) is provided with a slide rail. The slide rail is slidably arranged in the slide groove, and the slide rail and the slide groove are both extended along the vertical direction.

8. The bearing lubrication structure according to claim 1, characterized in that: The supporting bottom shell (7) is provided with a stopper (71), and the stopper (71) is used to stop the oil baffle (1) downward.

9. The bearing lubrication structure according to any one of claims 1 to 8, characterized in that: The driving device (2) is a Z-shaped handle or a disc-shaped handle.

10. A wind power gearbox, characterized in that: The wind turbine gearbox comprises the bearing lubrication structure according to any one of claims 1 to 9, and further comprises a gearbox body (4) and a rotary bearing (5), wherein the bearing lubrication structure and the rotary bearing (5) are both arranged on the gearbox body (4).

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