A load-damping device for a wind power bearing testing machine
By using a combination of vibration damping blocks and guide blocks in the wind turbine bearing testing machine, the problem of severe vibration in bearing testing was solved, ensuring bearing loading accuracy and production quality, and simplifying the maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 洛阳轴承控股有限公司
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-24
AI Technical Summary
Existing wind turbine bearing testing methods result in severe vibrations during high-speed or rapid acceleration/deceleration operation, affecting test results and production quality, and the bearing housing is prone to slippage.
A load-bearing vibration damping device for a wind turbine bearing testing machine is adopted, comprising a combination structure of damping blocks and guide blocks. The bearing housing is restricted from rotation by bolt connection, and the energy is absorbed by the compression spring damping blocks to reduce vibration.
It effectively reduces bearing vibration during high-speed operation, ensures loading accuracy, prevents bearing housing slippage, simplifies the maintenance process, and reduces maintenance costs.
Smart Images
Figure CN224550697U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vibration reduction technology for bearing testing machines, and mainly relates to a load-bearing vibration reduction device for wind power bearing testing machines. Background Technology
[0002] Wind turbine bearings are core components of wind turbines. With the development of technology, the demand for wind turbine bearings is increasing day by day. The quality of the bearings affects the stability of the equipment operation. When testing wind turbine bearings, the inner diameter of the test bearing is usually installed on the main shaft. The motor drives the main shaft to rotate, which in turn drives the inner sleeve of the bearing to rotate. Axial or radial loading is required to test the bearing quality. In order to ensure that the test load can be accurately transmitted to the test bearing through the bearing housing, the displacement of the bearing housing along the direction of the loading force cannot be restricted. Currently, the two commonly used testing methods are simply supported beam structure testing and cantilever beam structure testing. In the simply supported beam structure, the test bearing is located at the middle floating support point; in the cantilever beam structure, the test bearing is located at the cantilever end floating support point. Both structures do not restrict the displacement of the test bearing housing at all. The loading device directly applies a load to the bearing housing, and the friction generated by the mutual compression between the loading device and the bearing housing prevents the bearing housing from rotating with the inner ring of the bearing. When the bearing is running at high speed or undergoing rapid acceleration and deceleration, the positioning stability of the above two testing methods is too poor, and the bearing will produce severe vibration, which seriously affects the test results, thereby affecting the production quality of the bearing and increasing the enterprise cost. Utility Model Content
[0003] The purpose of this invention is to provide a load-bearing vibration damping device for a wind turbine bearing testing machine, which can effectively reduce bearing vibration while ensuring bearing loading accuracy, preventing bearing seat slippage, and ensuring production quality.
[0004] To achieve the purpose of this utility model, the technical solution adopted is as follows: A load-bearing vibration damping device for a wind turbine bearing testing machine includes a base plate at the bottom; the base plate is a rectangular plate with an axially arranged guide groove at its front top surface and a vertically arranged fixed seat at its rear top surface; a horizontally arranged main shaft is arranged on the fixed seat near the guide groove; a bearing seat is fitted on the outer circumference of the main shaft, and an inner bearing ring is provided at the connecting end of the main shaft; an outer bearing ring is provided on the bearing seat and connected thereto; and a vibration damping component is provided at the lower part of the bearing seat.
[0005] The vibration damping component includes a vibration damping block disposed at the lower part of the bearing housing; symmetrically arranged guide blocks are disposed on both sides of the vibration damping block; the guide blocks are disposed in the guide groove of the base plate; and a T-shaped groove parallel to the guide groove is disposed on the bottom surface of the guide groove.
[0006] The damping block is a T-shaped block with evenly distributed positioning holes A on its top surface, which are connected to the mounting holes on the bottom surface of the bearing seat by upper positioning screws.
[0007] The guide block is an L-shaped block with evenly distributed positioning holes B on its horizontal surface, and is connected to the T-slot by a lower positioning screw.
[0008] The bottom surface of the bearing housing is set as a plane, and evenly distributed mounting holes are provided on the plane.
[0009] The vibration damping component includes a vibration damping block disposed at the lower part of the bearing housing; the vibration damping block is a compression spring vibration damping block, the block portion of which is rectangular in shape and disposed in a guide groove, and evenly distributed positioning holes D are provided below the block portion; a vertically arranged compression spring is connected to the top surface of the block portion, and a connecting plate is provided on the top surface of the compression spring; the connecting plate is connected to the bottom of the bearing housing by bolts.
[0010] The bottom plate has evenly distributed positioning holes C on its end face; the positions of the positioning holes C correspond to the positions of the positioning holes D on the block part, and are fixed by positioning bolts.
[0011] The guide groove is a rectangular groove, the cross-section of which matches the block-shaped part, and the block-shaped part can move within the guide groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are: By incorporating vibration damping components into this device, the rotation of the bearing housing can be restricted, and the vibration generated by the bearing during high-speed and rapid acceleration / deceleration can be reduced without affecting the accurate transmission of the test load. This ensures the bearing loading accuracy while effectively reducing bearing vibration, preventing bearing housing slippage, and guaranteeing production quality. Furthermore, the device is easy to install and disassemble. The vibration damping components are connected by bolts, which facilitates easy disassembly and replacement, simplifying the maintenance process and reducing maintenance costs and time. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 yes Figure 1 Side sectional view.
[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the damping block and guide block.
[0016] Figure 4 This is a schematic diagram of another embodiment of the present invention.
[0017] Figure 5yes Figure 4 A schematic diagram of the structure of the middle damping block.
[0018] In the diagram: 1. Base plate, 2. Guide groove, 3. Fixed seat, 4. Spindle, 5. Bearing seat, 6. Inner bearing ring, 7. Outer bearing ring, 8. Vibration damping block, 9. Guide block, 10. T-slot, 11. Positioning hole A, 12. Upper positioning screw, 13. Positioning hole B, 14. Lower positioning screw, 15. Block-shaped part, 16. Compression spring, 17. Connecting plate, 18. Positioning hole C, 19. Positioning hole D. Detailed Implementation
[0019] The present invention will be described in conjunction with the accompanying drawings.
[0020] like Figures 1-3 The wind turbine bearing testing machine is shown with a load-bearing vibration damping device, including a base plate 1 at the bottom; the base plate 1 is a rectangular plate with an axially arranged guide groove 2 at the front end of its top surface and a vertically arranged fixing seat 3 at the rear end of its top surface; a horizontally arranged main shaft 4 is arranged on the fixing seat 3 near the guide groove 2; a bearing seat 5 is fitted on the outer circumference of the main shaft 4, and a bearing inner ring 6 is provided at the connecting end of the main shaft 4; a bearing outer ring 7 is provided on the bearing seat 5 and connected thereto; the bottom surface of the bearing seat 5 is set as a plane, and evenly distributed mounting holes are provided on the plane; a vibration damping component is provided at the lower part of the bearing seat 5.
[0021] The vibration damping component includes a vibration damping block 8 disposed at the lower part of the bearing housing 5; symmetrically arranged guide blocks 9 are provided on both sides of the vibration damping block 8; the guide blocks 9 are disposed in the guide groove 2 of the base plate 1; the bottom surface of the guide groove 2 is provided with a T-shaped groove 10 parallel to the guide groove 2; the vibration damping block 8 is a T-shaped block in whole, with evenly distributed positioning holes A11 on its top surface, and is connected to the mounting holes on the bottom surface of the bearing housing 5 by upper positioning screws 12; here the vibration damping block 8 has vertical working surfaces on both sides and a horizontal mounting surface on the top, the two working surfaces are parallel and perpendicular to the mounting surface, and after the vibration damping block 8 is installed, the two working surfaces are parallel to the working surfaces of the two guide blocks 9 respectively.
[0022] The guide block 9 is an L-shaped block with evenly distributed positioning holes B13 on its horizontal surface, and is connected to the T-slot 10 by a lower positioning screw 14. The guide block 9 has an inner vertical working surface and positioning holes B13 on the horizontal surface. There are two guide blocks 9, which are symmetrically installed in the guide groove 2. The two working surfaces are vertical and parallel to each other. The position of the guide block 9 in the guide groove 2 is adjusted so that the working surface of the guide block 9 is in clearance fit with the working surface of the vibration damping block 8. The position of the guide block 9 is fixed by passing the lower positioning screw 14 through the T-slot 10 and the positioning hole B13 of the guide block 9.
[0023] In this embodiment, to ensure that the axial and radial loads tested can be accurately transmitted to the bearing through the bearing housing 5, the displacement of the bearing housing 5 in the vertical direction and the bearing axis direction cannot be restricted. Therefore, after the damping block 8 is assembled with the bearing housing 5, a certain distance must be maintained between the bottom of the damping block 8 and the upper surface of the base plate 1 to ensure that the bottom of the damping block 8 will not contact the base plate 1 and affect the transmission of the radial load to the bearing when the bearing housing 5 is subjected to radial load. A clearance fit is used between the working surface of the damping block 8 and the working surface of the guide block 9 to ensure that no friction is generated between the damping block 8 and the guide block 9 when the bearing housing 5 is subjected to axial load, thus preventing the axial load from being transmitted to the bearing. Furthermore, after the device is assembled, the lower edge of the working surface of the damping block 8 needs to be lower than the upper edge of the working surface of the guide block 9 to restrict the movement of the damping block 8 in the bearing rotation direction, thereby preventing the bearing housing 5 from rotating and reducing bearing vibration.
[0024] like Figures 4-5 As shown in another embodiment of the present invention, the vibration damping component includes a vibration damping block 8 disposed at the lower part of the bearing housing 5; the vibration damping block 8 is a compression spring vibration damping block, the block portion 15 of which is rectangular in shape and disposed in the guide groove 2, and evenly distributed positioning holes D19 are provided below the block portion 15; a vertically arranged compression spring 16 is connected to the top surface of the block portion 15, and a connecting plate 17 is provided on the top surface of the compression spring 16; the connecting plate 17 is connected to the bottom of the bearing housing 5 by bolts; evenly distributed positioning holes C18 are provided on the end face of the bottom plate 1; the position of the positioning hole C18 corresponds to the position of the positioning hole D19 on the block portion 15, and is fixed by the positioning bolts; the guide groove 2 is a rectangular groove, the cross section of which matches the block portion 15, and the block portion 15 can move within the guide groove 2; the direction of the guide groove 2 is perpendicular to the bearing axis and is located below the bearing. Here, the damping block 8 is fixed to the base plate 1 by the positioning hole C18 and the positioning bolt. By being set as a compression spring damping block, the bearing seat 5 can deform under the action of external force and return to its original shape after the external force disappears. This elastic characteristic allows the damping block 8 to absorb energy, thereby playing a role in damping vibration.
[0025] In use, the components are first assembled, and the positions of the two guide blocks 9 are adjusted so that they are symmetrically distributed on both sides of the damping block 8, and the working surfaces of the two guide blocks 9 are in a clearance fit with the two working surfaces of the damping block 8. The guide block 2 is fixed in position by the lower positioning screw 14. Then, the motor and loading device are started, and the main shaft 4 drives the inner ring 6 of the bearing to rotate. Due to the limiting effect of the working surfaces of the damping block 8 and the guide block 9, the bearing housing 5 and the outer ring 7 of the bearing will not rotate with the inner ring 6 of the bearing. This can also effectively reduce the vibration of the bearing during high-speed operation and rapid acceleration and deceleration. At the same time, the damping block 8 and the guide block 9 adopt a clearance fit, so that the movement of the damping block 8 in the vertical direction and along the bearing axis is unrestricted. This ensures that the applied load can be accurately transmitted to the bearing. The use of this device can prevent the bearing housing 5 from rotating, effectively reduce the vibration of the bearing during operation, and does not affect the loading accuracy. In another embodiment, when the bearing housing 5 is subjected to vibration potential energy, the compression spring 16 on the damping block 8 deforms under the action of the vibration external force of the bearing housing 5 and returns to its original shape after the external force disappears. This elastic characteristic allows the damping block 8 to absorb energy, thereby playing a role in damping vibration and reducing the damage of vibration to the equipment. In addition, all the above components are connected by bolts, which can be easily disassembled and replaced, simplifying the maintenance process and reducing maintenance costs and time.
[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A load-bearing vibration damping device for a wind turbine bearing testing machine, comprising a base plate (1) disposed at the bottom; characterized in that: The base plate (1) is a rectangular plate with an axially arranged guide groove (2) at the front end of its top surface and a vertically arranged fixed seat (3) at the rear end of its top surface. A horizontally arranged main shaft (4) is arranged on the fixed seat (3) near the guide groove (2). A bearing seat (5) is fitted on the outer circumference of the main shaft (4), and a bearing inner ring (6) is provided at the connecting end of the main shaft (4). A bearing outer ring (7) is provided on the bearing seat (5) and connected thereto. A vibration damping component is provided at the lower part of the bearing seat (5).
2. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 1, characterized in that: The vibration damping component includes a vibration damping block (8) disposed at the lower part of the bearing seat (5); symmetrically arranged guide blocks (9) are provided on both sides of the vibration damping block (8); the guide blocks (9) are disposed in the guide groove (2) of the base plate (1); the bottom surface of the guide groove (2) is provided with a T-shaped groove (10) parallel to the guide groove (2).
3. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 2, characterized in that: The damping block (8) is a T-shaped block with evenly distributed positioning holes A (11) on its top surface, and is connected to the mounting holes on the bottom surface of the bearing seat (5) by the upper positioning screws (12).
4. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 2, characterized in that: The guide block (9) is an L-shaped block with evenly distributed positioning holes B (13) on its horizontal surface, and is connected to the T-slot (10) by the lower positioning screw (14).
5. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 1, characterized in that: The bottom surface of the bearing housing (5) is set as a plane, and evenly distributed mounting holes are provided on the plane.
6. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 1, characterized in that: The vibration damping component includes a vibration damping block (8) disposed at the lower part of the bearing housing (5); the vibration damping block (8) is a compression spring vibration damping block, the block part (15) is rectangular in shape and disposed in the guide groove (2), and evenly distributed positioning holes D (19) are provided below the block part (15); a vertically arranged compression spring (16) is connected to the top surface of the block part (15), and a connecting plate (17) is provided on the top surface of the compression spring (16); the connecting plate (17) is connected to the bottom of the bearing housing (5) by bolts.
7. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 1, characterized in that: The bottom plate (1) has evenly distributed positioning holes C (18) on its end face; the position of the positioning holes C (18) corresponds to the position of the positioning holes D (19) on the block part (15) and is fixed by the positioning bolts.
8. The load-bearing vibration damping device for a wind turbine bearing testing machine according to claim 6, characterized in that: The guide groove (2) is a rectangular groove, and its cross section matches the block part (15). The block part (15) can move within the guide groove (2).