CN115508091A - Wind generating set main shaft, driftage, change oar bearing capability test platform - Google Patents
Wind generating set main shaft, driftage, change oar bearing capability test platform Download PDFInfo
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- CN115508091A CN115508091A CN202211382205.1A CN202211382205A CN115508091A CN 115508091 A CN115508091 A CN 115508091A CN 202211382205 A CN202211382205 A CN 202211382205A CN 115508091 A CN115508091 A CN 115508091A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a wind generating set main shaft, yaw and variable pitch bearing performance test bench which comprises a base, a loading assembly, a driving device, a rotating device, an adapter, a fixing device, a control module and a monitoring module. The fixing device is arranged on the base; one end of the rotating device is provided with a connecting part for connecting the bearing to be tested; the other end of the rotating device is provided with a gear ring, the driving device comprises a shell, the shell is provided with a shaft hole, the rotating device is provided with a shaft connecting part, the shaft connecting part is rotatably arranged in the shaft hole, the shell is provided with a driving motor, and the output end of the driving motor is provided with a driving gear meshed with the gear ring; the loading assembly includes an actuator and a controller that controls the actuator. Therefore, the test bed for testing the performance of the main shaft, the yaw bearing and the variable pitch bearing of the wind generating set can simultaneously load the axial force, the radial force and the overturning force of a fan by means of the rotating device, and realize the simulation test of multiple degrees of freedom of the bearing.
Description
Technical Field
The invention relates to the field of bearing testing of wind generating sets, in particular to a test bed for testing the performance of a main shaft, a yaw bearing and a pitch bearing of a wind generating set.
Background
Wind power generation is used as a green energy source, and is widely popularized and applied in recent years, and the reliability of a wind generating set has a return on investment.
The slewing bearing of the wind generating set mainly comprises an inner ring, an outer ring, a rolling body and an isolation block, and is an important component of the wind generating set, the force applied to the slewing bearing of the wind generating set in the air is very complex, the force mainly comprises an axial force Fa, a radial force Fr and an overturning moment M, the complex stress conditions of alternation, vibration and the like exist, and the service life calculation of the slewing bearing of the wind generating set in China does not have a unified and standard calculation formula. Therefore, for a wind power slewing bearing with a design life of 20 years or even longer, it is necessary to establish a test bed capable of performing simulation test on a wind turbine generator. Most of the existing bearing performance test beds can only simply simulate one of axial force Fa, radial force Fr and overturning moment M, and the running state of an actual wind generating set, the loading state and the like are difficult to simulate by combining various stress conditions, so that the test results have a limited guiding effect on research and development improvement.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the simulation test bench for the wind turbine generator can simultaneously simulate the combined effect of axial force Fa, radial force Fr and overturning moment M, simulate the running state of an actual wind turbine generator, change the loading state condition and provide data support for improving the structural design, material performance and heat treatment processing technology of a slewing bearing of the wind turbine generator.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a wind generating set main shaft, driftage, change oar bearing capability test platform includes: the device comprises a base, a loading assembly, a driving device, a rotating device, a bearing device, a fixing device, a control module and a monitoring module.
The fixing device is arranged on the base;
the bearing device is used for bearing a bearing to be tested; one end of the bearing device is connected with the fixing device, and the other end of the bearing device is connected with the rotating device;
one end of the rotating device, which is close to the fixing device, is provided with a connecting part for connecting a bearing to be tested; the other end of the rotating device is provided with a gear ring, and the periphery of the gear ring is provided with teeth;
the driving device comprises a shell, the shell is provided with a shaft hole, one end of the rotating device, which is provided with a gear ring, extends along the axial direction to form a shaft connecting part, the shaft connecting part is rotatably arranged in the shaft hole, the shell is provided with a driving motor, and the output end of the driving motor is provided with a driving gear meshed with the gear ring; the driving motor has adjustable speed, can swing at a fixed angle, has the rotating speed range of 0.1-20rpm, and can provide the torque less than or equal to 300 KN.m.
The loading assembly comprises an actuator and a controller for controlling the actuator, the actuator comprises an axial oil cylinder and a radial oil cylinder which are fixedly arranged on the base, an output shaft of the axial oil cylinder extends along the axial direction of the rotating device, and the end part of the output shaft of the axial oil cylinder is abutted against the end part of the shell; the output shaft of the radial oil cylinder is vertical to the axial direction of the rotating device; the axial oil cylinder can provide 10000KN axial alternating stress Fa, and the radial oil cylinder can provide 10000KN radial alternating stress Fr;
the control module is electrically connected with the driving motor and the controller and is used for controlling the rotating speed, the steering and the running time of the driving motor and controlling the execution of the actuator;
the monitoring module comprises a sensor assembly and a signal processing module, the sensor assembly is used for detecting the state of the bearing to be detected and the load borne by the bearing to be detected, and the signal processing module is used for amplifying, filtering and carrying out analog-to-digital conversion on a weak signal monitored by the sensor assembly and transmitting the weak signal to the outside.
On the basis of the technical scheme, the invention can be further improved as follows.
Preferably, the monitoring module is electrically connected with the control module, and the control module controls the start and stop of the driving motor and the actuator according to the state of the bearing to be tested and the load borne by the bearing to be tested, which are transmitted by the monitoring module.
Preferably, the base is provided with a sliding groove, and the fixing device can move along the sliding groove and is fixedly arranged at a set position of the sliding groove through a bolt.
Preferably, the bearing support device further comprises an auxiliary support, wherein the auxiliary support is arranged on the base and used for supporting a bearing device for bearing a bearing to be tested.
Preferably, the diameter of the end of the rotating device where the shaft connecting part is arranged is smaller than that of the end of the rotating device close to the fixing device.
Preferably, the rotating device is in a tower shape to adapt to the test of the large-size bearing.
Preferably, the sliding groove is a T-shaped groove.
Preferably, the adapter is in a ratio of 1.
Preferably, the auxiliary support, the fixing device, the base and the bearing structure of the wind generating set have the size in proportion of 1.
Preferably, the end part of the output shaft of the radial oil cylinder is fixedly arranged on the shell of the rotating device close to the coupling part, so as to provide downward pulling force and overturning moment M; and the radial alternating stress Fr is provided by controlling the output pressure change of the radial oil cylinder.
The wind turbine generator simulation test bench equipment provided by the invention can simulate the actual running state of a wind turbine generator and simultaneously simulate the mixed stress condition of axial force, radial force and overturning force, the connecting part of the bearing to be tested arranged at one end of the test bench rotating device can be butted with a bearing with the diameter of 0.5-6 m, and the power generation power of the wind turbine generator with the bearing of the size is generally 3-15MW, so that the test bench can simulate the torque input capacity of the 3-15MW wind turbine generator, can test the slewing bearings of various types of main shafts, yawing and variable pitch of the 3-15MW wind turbine generator, greatly shortens the test period through simulation and equivalent test, and achieves the same test effect as the actual running; and through test results and data, data support is provided for improving material performance and heat treatment processing technology and improving comprehensive performance of the slewing bearing.
Drawings
FIG. 1 is a schematic structural view of a test stand according to the present invention;
FIG. 2 is a schematic structural diagram of the test bed of the present invention with a bearing support device;
FIG. 3 is a schematic view of the external detail structure of the driving device of the present invention;
FIG. 4 is a schematic diagram of the internal structure of the driving device of the present invention;
FIG. 5 is a schematic view of a detailed structure of an end of the driving device near the connecting portion according to the present invention;
fig. 6 is a schematic structural diagram of an adapter in embodiment 2 of the present invention.
The reference numbers are recorded as follows:
1. a base; 11. a T-shaped groove;
2. loading the component; 211. an axial cylinder; 212. a radial cylinder;
3. a drive device; 31. a housing; 32. a shaft hole; 33. a drive motor; 331. a drive gear;
4. a rotating device; 41. a connecting portion; 42. a ring gear; 43. a shaft coupling part; 44. a radial hydrostatic bearing; 45. an axial hydrostatic bearing; 46. a radial rolling bearing; 47. a supporting seat;
5. a bearing carrying device; 51. an external adapter; 52. an internal adapter;
6. a fixing device;
9. auxiliary supporting;
10. and (5) bearing to be tested.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1:
fig. 1 is a schematic structural diagram of a test stand for testing the performance of a main shaft, a yaw bearing and a pitch bearing of a wind turbine generator system according to the present invention. The test bed for testing the performances of the main shaft, the yaw bearing and the pitch bearing of the wind generating set comprises a base 1, a loading assembly 2, namely an axial oil cylinder 211 and a radial oil cylinder 212, a driving device 3, a rotating device 4, a bearing part, an auxiliary support 9 and a fixing device 6.
Example 2:
as shown in fig. 2-6, the loading assembly 2 includes four axial cylinders 211 and two radial cylinders 212 controlled by actuators, and can provide maximum 10000KN axial alternating stress and 10000KN radial alternating stress to simulate actual working conditions;
as shown in fig. 3, the driving device 3 adopts gear transmission, and the plurality of driving motors 33 simultaneously drive the gear ring 42 to move through the precision planetary gear reducer, so as to drive the rotating device 4 to rotate; specifically, as shown in fig. 4, the rotating device 4 is connected with the housing 31 through two sets of radial hydrostatic bearings 44 and one set of axial hydrostatic bearings 45, specifically, one end of the rotating device 4 close to the fixing device 6 is provided with a connecting part 41 for connecting the bearing to be measured 10, the other end of the rotating device 4 is provided with a gear ring 42, and the periphery of the gear ring 42 is provided with teeth; the driving device 3 comprises a shell 31, the shell 31 is provided with a shaft hole 32, one end of the rotating device 4 provided with a gear ring 42 extends axially to form a shaft connection part 43, the shaft connection part 43 is rotatably arranged in the shaft hole 32 through two groups of radial hydrostatic bearings 44, a group of axial hydrostatic bearings 45 are further arranged between the gear ring 42 and the shell 31, the shell 31 is provided with a driving motor 33, and the output end of the driving motor 33 is provided with a driving gear 331 meshed with the gear ring 42.
As shown in fig. 5, the rotating device 4 is provided with one end of the connecting portion 41, a radial rolling bearing 46 is provided at a position close to the connecting portion 41, a support seat 47 is provided at an outer circumferential side of the radial rolling bearing 46, a support member can be provided between the support seat 47 and the base 1 for supporting, or an adjusting cylinder can be used to replace the support member to support the support seat 47, the adjusting cylinder can apply a final radial force together with the radial cylinder 212, that is, an end portion of an output shaft of the radial cylinder 212 is fixedly provided on a housing of the rotating device close to the shaft connecting portion to provide a downward pulling force, and the adjusting cylinder can perform fine adjustment according to actual needs, because the rotating device has a longer arm of force, the pulling force applied at the front end is multiplied effectively, and the force applied to the bearing 10 to be measured can be adjusted more accurately by using the adjusting cylinder; the rotating device 4 can realize revolution and simultaneously apply axial, radial and overturning moments independently or simultaneously.
In this example, the bearing carrying device 5 is an adapter as shown in fig. 6, and includes an external adapter 51 and an internal adapter 52, the external adapter 51 and the internal adapter 52 are connected through a bearing to be tested 10 (another end also has a group of bearings to be tested, which is not shown in the figure), the adapter is processed in equal proportion according to the actual size of the wind generating set, the bearing to be tested 10 is connected with the adapter through a high-strength bolt, and the adapter is connected with the rotating device 4 and the fixing device 6 through a high-strength bolt;
the auxiliary support 9 is used for supporting the adapter and is formed by welding 16Mn steel plates, and high-temperature stress relief annealing at 580 ℃ is carried out after welding;
the base 1 is formed by welding 16Mn steel plates, and high-temperature stress relief annealing is carried out at 580 ℃ after welding. The base 1 is fixed in concrete, the exposed part of the base is of a T-shaped groove 11 structure, and the fixing device 6 can move in the T-shaped groove 11 along the length direction and is used for adjusting the position of the fixing device 6 in the length direction so as to adapt to bearing carrying devices 5 with different sizes;
the end face of the fixing device 6 is connected with the adapter, and the fixing device 6 is fixed on the T-shaped groove 11 of the base 1 through bolts.
According to the actual running state of the fan, the bearing part, the auxiliary support 9 and the fixing device 6 with the structural size equal to the actual running condition are manufactured, therefore, the most real use scene of the bearing to be tested can be simulated on the basis of a test bed which is built by the bearing part, the auxiliary support 9 and the fixing device 6 with the same size as the actual running state, the running state of the simulation bearing is simulated, the running condition of the simulation bearing is simulated through loading and driving, the condition of the weight of a fan blade, the wind power of the fan blade and the like borne by the bearing to be tested after the bearing to be tested is finally installed is simulated, and the simulation test of the bearing of the fan set is realized.
The control module comprises a motor control device and a hydraulic control device.
The motor control device comprises a frequency converter and a related control circuit, wherein the frequency converter is used for controlling the rotating speed of the motor, so that the signal monitoring of the detected bearing under different rotating speeds is realized;
the hydraulic control device mainly controls the on-off and reversing of each electromagnetic valve, the rotating speed of a hydraulic motor pump and the like by a control circuit, so as to realize the control of loading force and the protection of a hydraulic loop;
the monitoring module comprises a signal acquisition device and a signal processing device, the signal acquisition device comprises a temperature sensor, a pressure sensor, a rotating speed sensor, a vibration sensor and the like, wherein the temperature sensor is a thermal resistance sensor, and is inserted into a temperature sensor testing hole reserved in the outer ring of the bearing during installation, and the installation positions are distributed at the position of 45 degrees formed by the inner ring of the bearing and a bearing point; the pressure sensors are distributed and attached to the matching surfaces of the bearing outer ring and the adapter and used for measuring the stress strain of the bearing outer ring to be measured; the rotating speed sensor adopts a laser rotating speed sensor, is arranged on the adapter shaft section and is used for measuring the actual rotating speed of the bearing; the vibration sensor adopts a relative vibration meter, is fixed on the inner ring or the outer ring of the bearing 10 to be measured in a magnetic absorption way, keeps the feeler lever in contact with the surface of the measured object by means of the elastic force of the spring, moves along with the feeler lever when the object vibrates, pushes the recording penholder to draw a change curve of the displacement of the vibrating object along with time on the moving paper tape, and can calculate the parameters of the displacement, the frequency and the like according to the recording curve; the signal processing device comprises a temperature transmitter, a pressure transmitter and the like, and is used for filtering, amplifying and converting weak signals of the temperature sensor and the pressure sensor which are received into signals conforming to a standard transmission protocol, such as 4-20mA signals of HART protocol, and transmitting the signals to the outside, such as a control host, and the data is recorded by software on the control host and displayed on a computer display screen.
Taking the test of a certain type of main bearing as an example, the complete working process of the equipment is detailed as follows:
1. the test requirements are as follows:
equivalent load: radial force: 4000kN, axial force: 2000kN, overturning moment 31000kN m
Equivalent test revolution number: 300000rev
2. Procedure of the test
The test bench is installed:
mounting the bearing 10 to be tested on an inner adapter 52 and an outer adapter 51 according to the fan mounting requirement; according to the size of the bearing carrying device 5, the fixing device 6 is adjusted to move to a matched position along the T-shaped groove 11, and the inner adapter 52 of the bearing carrying device 5 with the bearing 10 to be tested installed is connected to the connecting part 41 of the rotating device 4; connecting the external adapter 51 to the auxiliary support 9 and to the fixing means 6; and finishing the installation of the test bed.
Loading a load:
the test board is started through the control system, and the rotating device 4 is driven to rotate through the driving device 3 at the rotating speed of 10rpm; loading load, not considering the weight of the rotating device 4, assuming that the distance from the radial oil cylinder 212 to the connecting part 41 is 10 meters, and adjusting the distance from the oil cylinder to the connecting part 41 to be 1 meter; then the loading load of the oil cylinder is as follows: the axial oil cylinder 211 is loaded with axial force 2000kN, the radial oil cylinder 212 is loaded with load 3000kN (pulled downwards), and the oil cylinder loading load is adjusted to 1000kN (pulled downwards); the radial oil cylinder 212 realizes the overturning moment of 3000kN multiplied by 10 m =30000 kN.m, the adjusting oil cylinder realizes the overturning moment of 1000kN multiplied by 1 m =1000 kN.m, the radial oil cylinder and the adjusting oil cylinder are superposed to realize the overturning moment of 31000 kN.m, and the loading is finished so far, and the expected axial force, radial force and overturning moment are realized.
And (3) fatigue test:
test rotation speed of 10rpm and whole service life test time of 300000/10/60=500h; this time the test was completed.
The end part of the axial oil cylinder is of a ball structure, so that even if the rotating device generates slight deformation under the action of the radial oil cylinder, the axial oil cylinder and the rotating device generate slight displacement in the vertical direction, and the application of axial force cannot be influenced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A wind generating set main shaft, driftage, change oar bearing capability test platform includes: the base, its characterized in that still includes: the device comprises a base, a loading assembly, a driving device, a rotating device, a bearing device, a fixing device, a control module and a monitoring module;
the fixing device is arranged on the base;
the bearing device is used for bearing a bearing to be tested; one end of the bearing device is connected with the fixing device, and the other end of the bearing device is connected with the rotating device;
one end of the rotating device, which is close to the fixing device, is provided with a connecting part for connecting a bearing to be tested; the other end of the rotating device is provided with a gear ring, and the periphery of the gear ring is provided with teeth;
the driving device comprises a shell, the shell is provided with a shaft hole, one end of the rotating device, which is provided with a gear ring, extends along the axial direction to form a shaft connecting part, the shaft connecting part is rotatably arranged in the shaft hole, the shell is provided with a driving motor, and the output end of the driving motor is provided with a driving gear meshed with the gear ring;
the loading assembly comprises an actuator and a controller for controlling the actuator, the actuator comprises an axial oil cylinder and a radial oil cylinder which are fixedly arranged on a base, an output shaft of the axial oil cylinder extends along the axial direction of the rotating device, and the end part of the output shaft of the axial oil cylinder abuts against the end part of the shell; the output shaft of the radial oil cylinder is vertical to the axial direction of the rotating device;
the control module is electrically connected with the driving motor and the controller and is used for controlling the rotating speed, the steering and the running time of the driving motor and controlling the execution of the actuator;
the monitoring module comprises a sensor assembly and a signal processing module, the sensor assembly is used for detecting the state of the bearing to be detected and the load borne by the bearing to be detected, and the signal processing module is used for amplifying, filtering and carrying out analog-to-digital conversion on a weak signal monitored by the sensor assembly and transmitting the weak signal to the outside.
2. The test bed for testing the performance of the main shaft, the yaw and the pitch bearing of the wind generating set according to claim 1, wherein the monitoring module is electrically connected with the control module, and the control module controls the start and stop of the driving motor and the actuator according to the state of the bearing to be tested and the load borne by the bearing to be tested, which are transmitted by the monitoring module.
3. The test bed for testing the performance of the main shaft, the yaw and the pitch bearing of the wind generating set according to claim 1, wherein a sliding groove is formed in the base, and the fixing device can move along the sliding groove and is fixedly arranged at a set position of the sliding groove through a bolt.
4. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 1, further comprising an auxiliary support, wherein the auxiliary support is arranged on the base and used for supporting a bearing device for bearing a bearing to be tested.
5. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 1, wherein the diameter of one end of the rotating device, which is provided with the coupling part, is smaller than that of one end of the rotating device, which is close to the fixing device.
6. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 5, wherein the rotating device is tower-shaped.
7. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 3, wherein the sliding groove is a T-shaped groove.
8. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 1, wherein the size of the bearing carrying device is 1.
9. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 4, wherein the sizes of the auxiliary support, the fixing device and the base are in a ratio of 1.
10. The test bed for testing the performance of the main shaft, the yaw bearing and the pitch bearing of the wind generating set according to claim 1, wherein the end part of the output shaft of the radial oil cylinder is fixedly arranged on a shell of the rotating device close to the coupling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211382205.1A CN115508091B (en) | 2022-11-07 | 2022-11-07 | Wind generating set main shaft, driftage, change oar bearing capability test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211382205.1A CN115508091B (en) | 2022-11-07 | 2022-11-07 | Wind generating set main shaft, driftage, change oar bearing capability test platform |
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| CN115508091A true CN115508091A (en) | 2022-12-23 |
| CN115508091B CN115508091B (en) | 2023-03-10 |
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| CN202211382205.1A Active CN115508091B (en) | 2022-11-07 | 2022-11-07 | Wind generating set main shaft, driftage, change oar bearing capability test platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116358867A (en) * | 2023-05-09 | 2023-06-30 | 南京工大数控科技有限公司 | Ultra-large heavy-duty bearing test bed |
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| CN106813935A (en) * | 2016-12-27 | 2017-06-09 | 浙江大学 | A kind of loading device for simulating high-power level blower fan five degree of freedom load |
| CN114323649A (en) * | 2021-12-31 | 2022-04-12 | 福州大学 | Slewing bearing fault diagnosis method based on CEEMDAN and PSO-MOMEDA |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT237389B (en) * | 1962-08-21 | 1964-12-10 | G & J Jaeger G M B H | Trunnion-free rolling bearings for absorbing large tilting moments, axial and radial forces |
| CN101183044A (en) * | 2007-12-04 | 2008-05-21 | 瓦房店轴承集团有限责任公司 | Wind electricity pitch variable bearings test machine |
| CN101256103A (en) * | 2008-02-21 | 2008-09-03 | 文鉴恒 | Megawatt level wind power generation oar-changing bearing friction torque numeric control testing machine and test approach |
| CN101419125A (en) * | 2008-12-08 | 2009-04-29 | 南京工业大学 | Wind-powered turntable bearing combination property bench |
| CN201555707U (en) * | 2009-09-24 | 2010-08-18 | 浙江天马轴承股份有限公司 | Large-sized bearing tester |
| CN201844920U (en) * | 2010-08-26 | 2011-05-25 | 华锐风电科技(江苏)有限公司 | Test device for variable pitch bearing of wind generating set |
| CN102305706A (en) * | 2011-07-22 | 2012-01-04 | 耐世特凌云驱动系统（芜湖）有限公司 | Working condition experimental device of automotive front driving shaft |
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| CN106813935A (en) * | 2016-12-27 | 2017-06-09 | 浙江大学 | A kind of loading device for simulating high-power level blower fan five degree of freedom load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116358867A (en) * | 2023-05-09 | 2023-06-30 | 南京工大数控科技有限公司 | Ultra-large heavy-duty bearing test bed |
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| Publication number | Publication date |
|---|---|
| CN115508091B (en) | 2023-03-10 |
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