Wind power generator main shaft bearing test device

Abstract

The utility model belongs to the technical field of wind power generator main shaft bearing testing, and particularly relates to a wind power generator main shaft bearing testing device which comprises a base, the upper surface of the base is connected with a main server driving motor, a coupler is installed on the upper surface of the base, and an output shaft is connected into the coupler in a penetrating mode. The upper surface of the base is provided with a double-support bearing seat, the upper surface of the base is provided with a tested bearing seat, and the upper surface of the base is also provided with an axial electric cylinder loading mechanism and a radial electric cylinder loading mechanism; a standby driving motor is installed on the upper surface of the base. According to the utility model, when the main server driving motor fails and cannot operate normally, the standby driving motor is controlled to operate, and when the standby driving motor moves, the output shaft is driven to rotate through the first belt pulley, the belt ring and the second belt pulley, so that the output shaft can be driven to continuously rotate to keep the normal operation of an experiment; therefore, inaccurate results caused by experiment stop can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine generator main shaft bearing testing technology, specifically relating to a wind turbine generator main shaft bearing testing device. Background Technology

[0002] A wind turbine main shaft bearing testing device is a specialized piece of equipment used to simulate the stress, speed, and temperature conditions of wind turbine main shaft bearings under actual operating conditions to test bearing performance, lifespan, and reliability. As the wind power industry develops towards higher power, higher efficiency, and longer lifespan, the performance verification and reliability assessment of main shaft bearings, as critical components, have become particularly important. The design of the testing device must closely integrate with actual operating conditions to ensure the accuracy and validity of the test results.

[0003] Bearing life prediction and testing equipment is a type of testing device for wind turbine generator main shaft bearings. The core principle of bearing life prediction and testing equipment is to quantify the fatigue damage accumulation process of bearings by simulating actual working conditions or accelerated testing, combined with multi-physics field monitoring and data analysis technology, and then predict their remaining life (RUL) and failure mode.

[0004] In the actual operation of existing wind turbine generator main shaft bearing testing equipment, if the main servo drive motor is damaged, it will directly lead to the paralysis of the test bench power system, thereby forcing the entire experimental process to be interrupted. Such sudden interruption will not only significantly prolong the test cycle, but also have an irreversible impact on the accuracy of the results due to the discontinuity of the experimental conditions. For example, the temperature gradient, lubrication state and stress distribution of the bearing may change significantly before and after the interruption, resulting in a deviation of more than 20% between the predicted fatigue life value and the actual value, which will ultimately affect the reliability assessment of the bearing material performance, lubrication scheme or structural design. Utility Model Content

[0005] The purpose of this invention is to provide a wind turbine generator main shaft bearing testing device, which aims to solve the problem that in the actual operation of the existing wind turbine generator main shaft bearing testing device, if the main servo drive motor is damaged, it will directly lead to the paralysis of the test bench power system, thereby forcing the entire experimental process to be interrupted. Such sudden interruption will not only significantly prolong the test cycle, but also have an irreversible impact on the accuracy of the results due to the discontinuity of the experimental conditions, ultimately affecting the reliability assessment of bearing material performance, lubrication scheme or structural design.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine generator main shaft bearing testing device, comprising a base, a main servo drive motor connected to the upper surface of the base, a coupling installed on the upper surface of the base, an output shaft connected through the inside of the coupling, a double support bearing seat installed on the upper surface of the base, a bearing seat to be tested installed on the upper surface of the base, and an axial electric cylinder loading mechanism and a radial electric cylinder loading mechanism also installed on the upper surface of the base;

[0007] A spare drive motor is mounted on the upper surface of the base. The output end of the spare drive motor is connected to a linkage component connected to the output shaft. The end of the output shaft is connected to a docking component connected to the main servo drive motor. The end of the main servo drive motor is connected to a transverse component connected to the upper surface of the base. The lower surface of the main servo drive motor is connected to a guide component connected to the upper surface of the base.

[0008] As a preferred embodiment of the wind turbine generator main shaft bearing testing device of this utility model, the linkage component includes a first pulley, a second pulley, and a belt ring. The first pulley is connected to the output end of the standby drive motor, the second pulley is connected to the surface of the output shaft, and the belt ring is sleeved on the surfaces of the first pulley and the second pulley.

[0009] As a preferred embodiment of the wind turbine generator main shaft bearing testing device of this utility model, the docking assembly includes a docking seat, a plug groove, and a docking block. The end of the docking seat is connected to a docking seat, the side surface of the docking seat is provided with a plug groove, and the output end of the main servo drive motor is connected to a docking block.

[0010] As a preferred embodiment of the wind turbine generator main shaft bearing testing device of this utility model, the longitudinal cross-sectional dimensions of the mating block and the insertion slot are adapted to each other, and the heights of the mating block and the insertion slot are consistent.

[0011] As a preferred embodiment of the wind turbine generator main shaft bearing testing device of this utility model, the transverse component includes a support and an electric push rod. The support is connected to the upper surface of the device, and the side surface of the support is connected to the electric push rod connected to the side surface of the main servo drive motor.

[0012] As a preferred embodiment of the wind turbine generator main shaft bearing testing device of this utility model, the guiding assembly includes a guide rail and a sliding sleeve, the upper surface of the base is connected to a sliding sleeve sleeve fitted on the guide rail surface is connected to the bottom side of the main servo drive motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention enables the operation of a backup drive motor when the main servo drive motor fails to operate normally. When the backup drive motor moves, it drives the first pulley to rotate. When the first pulley rotates, it drives the second pulley to rotate through the belt ring. When the second pulley rotates, it drives the output shaft to rotate. This allows the output shaft to continue rotating to keep the experiment running normally, thus avoiding inaccurate results due to the experiment stopping.

[0015] In this invention, when the main servo drive motor fails and stops operating, an electric push rod is activated. When the electric push rod retracts, it can drive the main servo drive motor to move closer to the electric push rod. When the main servo drive motor moves laterally, it can drive the docking block to move away from the docking seat. When the docking block moves to the outside of the insertion slot, the equipment can be driven to operate normally by the backup drive motor, and the main servo drive motor can be removed for maintenance. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a partial structural diagram of the present invention;

[0019] Figure 3 This is a partial structural side view of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the main servo drive motor after horizontal movement in this utility model;

[0021] Figure 5 This is a top view of the structure of the main servo drive motor after lateral movement.

[0022] In the diagram: 1. Base; 2. Main servo drive motor; 3. Coupling; 4. Output shaft; 5. Double support bearing housing; 6. Bearing housing under test; 7. Axial electric cylinder loading mechanism; 8. Radial electric cylinder loading mechanism; 9. Backup drive motor; 10. Linkage assembly; 1001. First pulley; 1002. Second pulley; 1003. Belt ring; 11. Docking assembly; 1101. Docking seat; 1102. Insertion slot; 1103. Docking block; 12. Lateral movement assembly; 1201. Support; 1202. Electric push rod; 13. Guide assembly; 1301. Guide rail; 1302. Sliding sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The present invention provides the following technical solution: a wind turbine generator main shaft bearing test device, including a base 1, a main servo drive motor 2 connected to the upper surface of the base 1, a coupling 3 installed on the upper surface of the base 1, an output shaft 4 connected through the inside of the coupling 3, a double support bearing seat 5 installed on the upper surface of the base 1, a bearing seat 6 to be tested installed on the upper surface of the base 1, and an axial electric cylinder loading mechanism 7 and a radial electric cylinder loading mechanism 8 also installed on the upper surface of the base 1;

[0025] A spare drive motor 9 is mounted on the upper surface of the base 1. The output end of the spare drive motor 9 is connected to a linkage component 10 connected to the output shaft 4. The end of the output shaft 4 is connected to a docking component 11 connected to the main servo drive motor 2. The end of the main servo drive motor 2 is connected to a transverse component 12 connected to the upper surface of the base 1. The lower surface of the main servo drive motor 2 is connected to a guide component 13 connected to the upper surface of the base 1.

[0026] When using this wind turbine main shaft bearing testing device, the wind turbine main shaft bearing is installed inside the bearing housing 6 under test. Then, the output shaft 4 is driven to rotate by the main servo drive motor 2. This allows for fatigue testing of the wind turbine main shaft bearing. The temperature sensor installed can record the temperature changes of the wind turbine main shaft bearing during the testing process. The axial electric cylinder loading mechanism 7 and the radial electric cylinder loading mechanism 8 can apply loads to the wind turbine main shaft bearing, thereby simulating the pressure environment of the wind turbine main shaft bearing in actual use.

[0027] Preferably, the linkage assembly 10 includes a first pulley 1001, a second pulley 1002, and a belt ring 1003. The first pulley 1001 is connected to the output end of the standby drive motor 9, the second pulley 1002 is connected to the surface of the output shaft 4, and the belt ring 1003 is sleeved on the surfaces of the first pulley 1001 and the second pulley 1002.

[0028] In practical use, when the backup drive motor 9 moves, it drives the first pulley 1001 to rotate. When the first pulley 1001 rotates, it drives the second pulley 1002 to rotate through the belt ring 1003. When the second pulley 1002 rotates, it can drive the output shaft 4 to rotate.

[0029] Preferably, the docking assembly 11 includes a docking seat 1101, a plug groove 1102 and a docking block 1103. The end of the docking seat 1101 is connected to the docking seat 1101, the side surface of the docking seat 1101 is provided with the plug groove 1102, and the output end of the main servo drive motor 2 is connected to the docking block 1103.

[0030] Preferably, the longitudinal cross-sectional dimensions of the mating block 1103 and the insertion groove 1102 are compatible, and the heights of the mating block 1103 and the insertion groove 1102 are the same.

[0031] In practical use, after the main servo drive motor 2 drives the docking block 1103 to be inserted into the insertion slot 1102, the main servo drive motor 2 can drive the docking block 1103 to rotate when it runs. When the docking block 1103 rotates, it can drive the output shaft 4 to rotate through the docking seat 1101.

[0032] Preferably, the transverse component 12 includes a support 1201 and an electric push rod 1202. The support 1201 is connected to the upper surface of the main servo drive motor 2, and the side surface of the support 1201 is connected to the electric push rod 1202 connected to the side surface of the main servo drive motor 2.

[0033] In practical use, the electric push rod 1202 can drive the main servo drive motor 2 to move laterally when it runs, and the position of the docking block 1103 can be adjusted when the main servo drive motor 2 moves laterally.

[0034] Preferably, the guide assembly 13 includes a guide rail 1301 and a sliding sleeve 1302. The upper surface of the base 1 is connected to the sliding sleeve 1302, which is sleeved on the surface of the guide rail 1301, and the bottom side of the main servo drive motor 2 is connected to the sliding sleeve 1302.

[0035] In practical use, when the main servo drive motor 2 is subjected to a force, it can drive the sliding sleeve 1302 to slide on the surface of the guide rail 1301, which can maintain the stability of the main servo drive motor 2 during its movement.

[0036] Working principle: When the main servo drive motor 2 fails and cannot operate normally, the electric push rod 1202 can be activated. When the electric push rod 1202 retracts, it can drive the main servo drive motor 2 to move closer to the electric push rod 1202. When the main servo drive motor 2 moves laterally, it can drive the docking block 1103 to move away from the docking seat 1101. When the docking block 1103 moves to the outside of the insertion slot 1102, the backup drive motor 9 can be controlled to start running.

[0037] When the backup drive motor 9 moves, it can drive the first pulley 1001 to rotate. When the first pulley 1001 rotates, it drives the second pulley 1002 to rotate through the belt ring 1003. When the second pulley 1002 rotates, it can drive the output shaft 4 to rotate. This can drive the output shaft 4 to continue to rotate so that the experiment can proceed normally.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind turbine generator main shaft bearing test device comprising a base (1), characterized in that: The upper surface of the base (1) is connected to the main servo drive motor (2), the upper surface of the base (1) is equipped with a coupling (3), the inside of the coupling (3) is connected to an output shaft (4), the upper surface of the base (1) is equipped with a double support bearing seat (5), the upper surface of the base (1) is equipped with a test bearing seat (6), and the upper surface of the base (1) is also equipped with an axial electric cylinder loading mechanism (7) and a radial electric cylinder loading mechanism (8). A spare drive motor (9) is installed on the upper surface of the base (1). The output end of the spare drive motor (9) is connected to a linkage assembly (10) connected to the output shaft (4). The end of the output shaft (4) is connected to a docking assembly (11) connected to the main servo drive motor (2). The end of the main servo drive motor (2) is connected to a transverse movement assembly (12) connected to the upper surface of the base (1). The lower surface of the main servo drive motor (2) is connected to a guide assembly (13) connected to the upper surface of the base (1).

2. A wind turbine generator main shaft bearing testing device according to claim 1, characterized in that: The linkage component (10) includes a first pulley (1001), a second pulley (1002), and a belt ring (1003). The first pulley (1001) is connected to the output end of the standby drive motor (9). The surface of the output shaft (4) is connected to the second pulley (1002). The surface of the first pulley (1001) and the second pulley (1002) are fitted with belt rings (1003).

3. A wind turbine generator main shaft bearing testing device according to claim 1, characterized in that: The docking assembly (11) includes a docking seat (1101), a plug slot (1102), and a docking block (1103). The end of the docking seat (1101) is connected to the docking seat (1101), and the side surface of the docking seat (1101) is provided with a plug slot (1102). The output end of the main servo drive motor (2) is connected to the docking block (1103).

4. A wind turbine generator main shaft bearing testing device according to claim 3, characterized in that: The longitudinal cross-sectional dimensions of the docking block (1103) and the insertion slot (1102) are adapted to each other, and the heights of the docking block (1103) and the insertion slot (1102) are consistent.

5. A wind turbine generator main shaft bearing testing device according to claim 1, characterized in that: The transverse assembly (12) includes a support (1201) and an electric push rod (1202). The support (1201) is connected to the upper surface of the main servo drive motor (2), and the side surface of the support (1201) is connected to the electric push rod (1202) which is connected to the side surface of the main servo drive motor (2).

6. A wind turbine generator main shaft bearing testing device according to claim 1, characterized in that: The guide assembly (13) includes a guide rail (1301) and a sliding sleeve (1302). The upper surface of the base (1) is connected to the sliding sleeve (1302) which is sleeved on the surface of the guide rail (1301) and the bottom side of the main servo drive motor (2) is connected to the sliding sleeve (1302).

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