A stiffness checking device for wind turbine gearbox bearing eccentric load

Abstract

The utility model discloses a kind of stiffness checking devices of wind power gear box bearing eccentric load, it is related to wind power gear box technical field, including fixed base, wind power gear box, is installed in the top of fixed base;Eccentric load wheel, is installed on the bearing of wind power gear box;Eccentric load rubber wheel, is set to the periphery of eccentric load wheel, eccentric load rubber wheel is close to eccentric load wheel and applies eccentric load force.The utility model is provided with the structure setting of eccentric load wheel, eccentric load rubber wheel in the bearing end of wind power gear box, the eccentric load force of eccentric load rubber wheel is used to the inclined force of eccentric load in the bearing rotation process of wind power gear box, to observe the bearing stiffness of wind power gear box, the structure design of thread spool, weight tray, hanging ring, tray base is set in the top of wind power gear box, the adjustment of the eccentric load force of wind power gear box bearing is realized, by increasing or reducing the number of weight tray, reach the down pressure gravity of control eccentric load rubber wheel, realize the adjustment of the eccentric load force of wind power gear box bearing.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox technology, specifically to a stiffness verification device for wind turbine gearbox bearings under off-center load. Background Technology

[0002] Against the backdrop of the rapid development of the wind power industry, the single-unit capacity of wind turbine generators continues to increase. As a core transmission component, the wind turbine gearbox bears increasingly complex loads, and its reliability directly determines the operational stability and maintenance costs of the unit. Bearings, as key load-bearing components for power transmission in the gearbox, are highly susceptible to off-center loading due to factors such as installation errors, uneven gear meshing, and load fluctuations. This leads to localized stress concentration, significantly shortening bearing life and even causing sudden gearbox failures, resulting in substantial economic losses. Therefore, accurate verification of bearing stiffness under off-center loading conditions is a crucial step in ensuring the rationality of gearbox design and operational reliability.

[0003] Currently, during the research and development of wind turbine gearboxes, it is necessary to verify the stiffness of the bearings under off-center loading. When the bearings operate under off-center loading conditions, their fatigue life will inevitably be affected. Currently, there is a lack of specialized equipment for testing the stiffness of bearings under off-center loading conditions. Therefore, there is a need to provide a device for verifying the stiffness of wind turbine gearbox bearings under off-center loading. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a stiffness verification device for wind turbine gearbox bearings under off-center load, so as to solve the problem that the stiffness of wind turbine gearbox bearings under off-center load needs to be verified during the current research and development process in the industry. When the bearing operates under off-center load conditions, it will inevitably affect the fatigue life of the bearing. Currently, there is a lack of technical problems with specialized equipment for testing the stiffness of bearings under off-center load conditions.

[0005] To achieve the above objectives, this utility model employs the following technical solution: A stiffness verification device for off-center load on a wind turbine gearbox bearing includes a fixed base. The wind turbine gearbox is mounted on top of the fixed base; The off-center load wheel is mounted on the bearing of the wind turbine gearbox; An off-center load roller is disposed around the off-center load wheel. An off-center load force is applied close to the off-center load wheel through the off-center load roller to check the off-center load stiffness of the wind turbine gearbox bearing.

[0006] As a preferred technical solution of this utility model, the top of the fixed base is fixed with a side support plate that stands upright on the top surface of the fixed base, the top of the side support plate is fixedly installed with a guide platform, and the top of the guide platform is slidably connected with a spool.

[0007] As a preferred embodiment of this utility model, a reciprocating drag block is provided at the bottom end of the spool, and an inclined shaft is fixed at the bottom end of the reciprocating drag block, with an off-center rubber wheel rotatably connected to the surface of the shaft.

[0008] As a preferred embodiment of this utility model, the outer circular surface of the off-center rubber wheel is an arc-shaped surface.

[0009] As a preferred technical solution of this utility model, a hanging bracket plate is fixed to the top of the guide platform, and a top support plate is fixed to the top of the hanging bracket plate. A locking bracket is provided on the surface of the top support plate.

[0010] As a preferred embodiment of this utility model, the surface of the locking bracket is provided with a notch.

[0011] As a preferred embodiment of this utility model, the locking bracket includes a bracket fixed to the bottom surface of the top support plate, and the locking bracket is slidably connected to the surface of the bracket.

[0012] As a preferred embodiment of this utility model, a tray base is provided on the surface of the spool located above the guide platform, and several weighted trays are installed above the tray base.

[0013] As a preferred embodiment of this utility model, a hanging ring is provided at the top end of the spool.

[0014] This invention fixes a wind turbine gearbox to a fixed base with bolts. By incorporating an off-center load wheel and an off-center load rubber wheel at the bearing end of the gearbox, the off-center load force of the rubber wheel generates an off-center tilting force during the rotation of the gearbox bearing, allowing observation of the gearbox bearing stiffness. Furthermore, the design of a spool, weighted tray, hanging ring, and tray base at the top of the gearbox allows for adjustment of the off-center load force on the gearbox bearing. Increasing or decreasing the number of weighted trays controls the downward pressure of the off-center load rubber wheel, thus adjusting the off-center load force on the gearbox bearing.

[0015] This utility model's top support plate features a structure design of a locking bracket and a support bracket. The locking bracket is slidably connected to the bottom of the top support plate via the support bracket, allowing the spool to be pulled up and suspended on the locking bracket using a hanging ring when no verification is required. Furthermore, each weighted tray is detachable, making it convenient to store and organize the wind turbine gearbox bearing stiffness verification device.

[0016] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0017] Figure 1 This is a front view of the stiffness verification device for off-center load on the wind turbine gearbox bearing of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the left side of the stiffness verification device for the off-center load of the wind turbine gearbox bearing of this utility model. Figure 2 ; Figure 3 This is a top view of the weighted pallet of this utility model; In the diagram: 1. Fixed base; 2. Side support plate; 3. Wind turbine gearbox; 4. Guide platform; 5. Hanger support plate; 6. Top support plate; 7. Locking hanger; 8. Bracket; 9. Spool; 10. Weighted pallet; 11. Hanging ring; 12. Reciprocating drag block; 13. Off-center load rubber wheel; 14. Off-center load wheel; 15. Pallet base. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example

[0023] Please see Figure 1-3 The present invention provides a technical solution: a stiffness verification device for off-center load of wind turbine gearbox bearings, comprising a fixed base 1, a wind turbine gearbox 3, mounted on the top of the fixed base 1; an off-center load wheel 14, mounted on the bearing of the wind turbine gearbox 3; and an off-center load rubber wheel 13, disposed around the off-center load wheel 14. An off-center load force is applied by the off-center load rubber wheel 13 close to the off-center load wheel 14 to verify the stiffness of the off-center load of the wind turbine gearbox bearing.

[0024] A side support plate 2 is fixed to the top of the fixed base 1, which is upright on the top surface of the fixed base 1. A guide platform 4 is fixedly installed on the top of the side support plate 2. A spool 9 is slidably connected to the top of the guide platform 4, which facilitates the installation of a weighted tray 10 on the surface of the spool 9.

[0025] In this embodiment, a reciprocating drag block 12 is provided at the bottom end of the spool 9, and an inclined shaft is fixed at the bottom end of the reciprocating drag block 12. An off-center load rubber wheel 13 is rotatably connected to the surface of the shaft. The outer circular surface of the off-center load rubber wheel 13 is an arc-shaped surface.

[0026] Specifically, in this embodiment, the present invention fixes the wind turbine gearbox to a fixed base with bolts. By configuring an off-center load wheel and an off-center load rubber wheel at the bearing end of the wind turbine gearbox, the off-center load force of the rubber wheel generates an off-center tilting force during the rotation of the wind turbine gearbox bearing, thereby allowing observation of the bearing stiffness. Furthermore, by configuring a spool, a weighted tray, a hanging ring, and a tray base at the top of the wind turbine gearbox, the magnitude of the off-center load force on the wind turbine gearbox bearing can be adjusted. By increasing or decreasing the number of weighted trays, the downward pressure of the off-center load rubber wheel can be controlled, thus adjusting the off-center load force on the wind turbine gearbox bearing.

[0027] Example 2 Please see Figure 1-3 This is another technical solution provided by the present invention. This embodiment has the same features as the above embodiment 1, and the similarities will not be described in this embodiment. The specific differences are as follows: A stiffness verification device for off-center load on a wind turbine gearbox bearing includes a fixed base 1, a wind turbine gearbox 3 mounted on the top of the fixed base 1, an off-center load wheel 14 mounted on the bearing of the wind turbine gearbox 3, and an off-center load rubber wheel 13 disposed around the off-center load wheel 14. An off-center load force is applied by the off-center load rubber wheel 13 close to the off-center load wheel 14 to verify the stiffness of the off-center load on the wind turbine gearbox bearing.

[0028] A hanging bracket 5 is fixed to the top of the guide platform 4, standing upright on the top surface of the guide platform 4. A top support plate 6 is fixed to the top of the hanging bracket 5, and a locking bracket 7 is provided on the surface of the top support plate 6. The surface of the locking bracket 7 has a notch to facilitate the hanging ring 11 at the top of the spool 9.

[0029] The locking bracket 7 includes a bracket 8 fixed to the bottom surface of the top support plate 6. The locking bracket 7 is slidably connected to the surface of the bracket 8, so that the locking bracket 7 can be manually pushed, pulled and extended on the bottom surface of the top support plate 6.

[0030] A tray base 15 is provided on the surface of the spool 9 located above the guide table 4. Several weighted trays 10 are installed above the tray base 15, and a hanging ring 11 is provided at the top of the spool 9.

[0031] Specifically, in this embodiment, the top support plate of this utility model adopts a structural design of a locking bracket and a support bracket. The locking bracket is slidably connected to the bottom end of the top support plate through the support bracket, so that when no verification is required, the spool can be pulled up and suspended on the locking bracket by the hanging ring. In addition, each weighted tray is detachable, which makes it easy to store and organize the wind turbine gearbox bearing stiffness verification device.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stiffness verification device for off-center load on wind turbine gearbox bearings, comprising a fixed base (1), characterized in that: The wind turbine gearbox (3) is installed on the top of the fixed base (1); The eccentric wheel (14) is mounted on the bearing of the wind turbine gearbox (3); An off-center load wheel (13) is provided around the off-center load wheel (14). An off-center load force is applied by the off-center load wheel (13) close to the off-center load wheel (14) to check the stiffness of the off-center load of the wind turbine gearbox bearing.

2. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 1, characterized in that: The top of the fixed base (1) is fixed with a side support plate (2) that stands upright on the top surface of the fixed base (1). The top of the side support plate (2) is fixed with a guide plate (4). The top of the guide plate (4) is slidably connected with a spool (9).

3. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 2, characterized in that: The bottom end of the spool (9) is provided with a reciprocating drag block (12), and the bottom end of the reciprocating drag block (12) is fixed with an inclined shaft, and the off-center rubber wheel (13) is rotatably connected to the surface of the shaft.

4. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 3, characterized in that: The outer circular surface of the eccentric rubber wheel (13) is an arc-shaped surface.

5. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 2, characterized in that: The top of the guide platform (4) is fixed with a hanging bracket (5) that stands upright on the top surface of the guide platform (4), and the top of the hanging bracket (5) is fixed with a top support plate (6). The surface of the top support plate (6) is provided with a locking bracket (7).

6. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 5, characterized in that: The surface of the latch bracket (7) has a notch.

7. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 5, characterized in that: The latch bracket (7) includes a bracket (8) fixed to the bottom surface of the top support plate (6), and the latch bracket (7) is slidably connected to the surface of the bracket (8).

8. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 3, characterized in that: A tray base (15) is provided on the surface of the spool (9) located above the guide table (4), and several weighted trays (10) are installed above the tray base (15).

9. The stiffness verification device for off-center load of wind turbine gearbox bearings according to claim 3, characterized in that: The top end of the spool (9) is provided with a hanging ring (11).

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