CN113834654B - Bearing service performance and service life testing device - Google Patents
Bearing service performance and service life testing device Download PDFInfo
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- CN113834654B CN113834654B CN202010507829.6A CN202010507829A CN113834654B CN 113834654 B CN113834654 B CN 113834654B CN 202010507829 A CN202010507829 A CN 202010507829A CN 113834654 B CN113834654 B CN 113834654B
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- 238000012360 testing method Methods 0.000 title claims abstract description 119
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000007405 data analysis Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
-
- 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
- G01M13/045—Acoustic or vibration analysis
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- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the field of testing of service performance of bearings, and particularly relates to a device for testing service performance and service life of bearings. The main support of the testing device is fixed on the base of the testing device, a driving system stator is arranged in the inner cavity of the main support of the testing device, a driving system rotor and a tested bearing are arranged on a main shaft, and the main shaft horizontally penetrates through the inner cavity of the main support of the testing device; the bearing support ring is arranged between the outer ring of the bearing to be tested and the inner cavity of the main support of the testing device, the axial loading mechanism of the bearing to be tested is arranged on the main support of the testing device, the axial loading mechanism of the bearing to be tested corresponds to the bearing support ring, and the radial loading mechanism of the bearing to be tested and the main shaft vibration monitoring mechanism are respectively arranged on the base of the testing device and on two sides of the main support of the testing device. The invention avoids the interference factors of a plurality of testing devices and truly reflects the service performance of the tested bearing. In addition, unpredictable extra load is avoided from being brought to the transmission main shaft, and the accuracy of subsequent data analysis is ensured.
Description
Technical Field
The invention belongs to the field of testing of service performance of bearings, and particularly relates to a device for testing service performance and service life of bearings.
Background
The existing bearing service performance testing device mainly adopts: 1) The direct-drive motorized spindle is driven by a shaft coupler, 2) the motor is driven by a belt wheel, the two driving modes provide power for the test module, the radial loading is provided for the test spindle by a standard bearing contact type, the vibration condition generated in the running process of the tested bearing is obtained by contacting an outer ring of the tested bearing through a vibration sensor, the motorized spindle, the motor, the belt wheel, the shaft coupler, the standard loading bearing, the vibration meter and the like can bring interference factors to a test system, each monitored signal comprises the influence of a plurality of components, and the information reflected by the signals represents the service performance of the tested bearing. Meanwhile, the transmission main shaft is driven by the coupler or the belt pulley, unpredictable additional load is brought to the transmission main shaft due to insufficient coaxiality or self-rotation precision, and the external applied load is inconsistent with the load born by the bearing to be tested, so that the analysis of subsequent data is affected.
Disclosure of Invention
Aiming at the defects of the traditional testing device, the invention aims to provide the device for testing the service performance and the service life of the bearing with high precision, high efficiency and simple structure.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a bearing service performance and life-span testing arrangement, includes testing arrangement base, testing arrangement main support, main shaft, the axial loading mechanism of measured bearing, the radial loading mechanism of measured bearing, bearing support ring, driving system stator, driving system rotor, specific structure is as follows:
The main support of the testing device is fixed on the base of the testing device, a driving system stator is arranged in the inner cavity of the main support of the testing device, a driving system rotor and a tested bearing are arranged on a main shaft, the main shaft horizontally penetrates through the inner cavity of the main support of the testing device, the driving system rotor and the tested bearing are positioned in the inner cavity of the main support of the testing device, and the main shaft is supported by the tested bearing; the bearing support ring is arranged between the outer ring of the tested bearing and the inner cavity of the main support of the testing device, the axial loading mechanism of the tested bearing is arranged on the main support of the testing device, the axial loading mechanism of the tested bearing corresponds to the bearing support ring, the radial loading mechanism of the tested bearing and the vibration monitoring mechanism of the main shaft are respectively arranged on the base of the testing device and on two sides of the main support of the testing device, the tops of the two radial loading mechanisms of the tested bearing are respectively matched with the bottoms of two ends of the main shaft correspondingly, and the two vibration monitoring mechanisms of the main shaft are respectively matched with the outer sides of the two ends of the main shaft correspondingly.
The device for testing the service performance and the service life of the bearing is characterized in that a driving system cooling and power interface is arranged on the top of a main support of the testing device, a power supply and a cooling water inlet/outlet of a stator of a driving motor are connected in the driving system cooling and power interface, and the driving system cooling and power interface is communicated with an inner cavity of the main support of the testing device.
The device for testing the service performance and the service life of the bearing is characterized in that a temperature sensor and a vibration sensor mounting hole are formed in the top of a main support of the testing device, a temperature sensor and a vibration sensor are respectively mounted in the temperature sensor and the vibration sensor mounting hole of the tested bearing, the temperature sensor and the vibration sensor extend to the inner cavity of the main support of the testing device respectively, and temperature information and vibration information of an outer ring of the tested bearing are obtained through the temperature sensor and the vibration sensor fixed in the temperature sensor and the vibration sensor mounting hole of the tested bearing.
According to the device for testing the service performance and the service life of the bearing, the axial loading mechanism of the bearing to be tested loads the bearing to be tested axially through the bearing support ring and the outer ring of the bearing to be tested.
The device for testing the service performance and the service life of the bearing is characterized in that the axial loading mechanism of the bearing to be tested is loaded on the outer ring of the bearing to be tested; the radial loading mechanism of the bearing to be tested is loaded on the main shaft based on the sliding bearing or the non-contact electromagnetic force and transmits loading force to the inner ring of the bearing to be tested.
The main shaft vibration monitoring mechanism of the bearing service performance and service life testing device is a high-speed high-definition camera or an optical vibration tester.
The device for testing the service performance and the service life of the bearing is characterized in that two or two pairs of bearings are tested.
The device for testing the service performance and the service life of the bearing comprises a driving system stator and a driving system rotor which correspond to each other, wherein: the driving system stator consists of a metal ring and an inductance copper coil, the inductance copper coil surrounds the inside of the metal ring, and electromagnetic force is generated in the inductance copper coil through alternating current, so that a driving system rotor rotates, and the driving system stator is fixed in the running process of the device; the driving system rotor consists of a permanent magnet and an annular metal piece, is fixed on the main shaft through the permanent magnet after being assembled, and rotates in the running process of the device, so that the main shaft rotates.
According to the device for testing the service performance and the service life of the bearing, the radial loading mechanism of the bearing to be tested is used for radially loading the main shaft, the axial loading mechanism of the bearing to be tested is used for applying a pretightening axial force to the bearing to be tested, the main shaft is supported by the bearing to be tested and rotates under the non-contact driving of the driving system, the radial loading mechanism of the bearing to be tested is used for applying a radial load to the main shaft rotating at a high speed, the bearing to be tested rotates under the applied axial and radial loads, and the corresponding main shaft vibration monitoring mechanism is used for measuring the runout and vibration of the main shaft in the rotating process.
The invention has the advantages and beneficial effects that:
1. the design of the outer ring of the tested bearing and the support of the driving stator ensures the concentric positioning of the tested bearing and the electromagnetic driving system, removes the test deviation caused by inaccurate positioning, and has high measurement precision.
2. The main shaft is supported by the tested bearing only, meanwhile, the non-contact test mode is adopted for radial loading and vibration signal monitoring, vibration interference caused by the standard bearing for loading, the coupler, the vibration sensor and the like in the running process of the main shaft is removed, the test monitoring signals are all responses caused by the tested bearing, the performance of the tested bearing is reflected in real time in the test process, and the measurement accuracy is high.
3. The testing device can test two bearings or two pairs of bearings; when two bearings are tested, the function of the testing device is that of the bearing testing device, and the service performance of a single bearing is reflected; when two pairs of bearings are tested, the function of the testing device is that of the main shaft system, the service performance of the whole set of main shaft system is reflected, and the same testing device has the functions of testing the bearings and the performance of the main shaft system.
4. The testing device can measure bearings of different types, has certain universality and good adaptability.
5. The testing device can evaluate the service life of the bearing, can measure the precision retention of the bearing during the non-full life test, and has high testing efficiency.
6. The testing device removes structures such as a driving motor, a coupling, a hydraulic system and the like, and has low noise and low energy consumption in the operation process.
7. The testing device has simple and compact structure, eliminates unnecessary accessories, reduces the volume of the testing device, and reduces the vibration interference and the manufacturing cost of the testing device.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a device for testing the service performance of a bearing.
FIG. 2 is a schematic diagram of a partial structure in a main support of the bearing service performance test device of the invention.
The reference numerals in the figures are:
The device comprises a 1-testing device base, a 2-testing device main support, a 3-driving system cooling and power interface, a 4-measured bearing temperature and vibration sensor mounting hole, a 5-spindle, a 6-measured bearing axial loading mechanism, a 7-measured bearing radial loading mechanism and an 8-spindle vibration monitoring mechanism; 9-a bearing to be tested; 10-a bearing support ring; 11-a drive system stator; 12-drive system rotor.
Detailed Description
As shown in fig. 1-2, the device for testing service performance and service life of a bearing mainly comprises:
a test device base 1 for fixing all the components;
The main support 2 of the testing device is provided with a driving system, a tested bearing 9 and a tested bearing axial loading mechanism 6 in the inner cavity;
the driving system cooling and power interface 3 is arranged at the top of the main support 2 of the testing device, and the driving system cooling and power interface 3 is communicated with the inner cavity of the main support 2 of the testing device;
The temperature sensor and the vibration sensor are respectively arranged in the temperature sensor mounting hole 4 and the vibration sensor mounting hole 4;
The main shaft 5 is only supported by the detected bearing 9 and is used for connecting the detected bearing 9, the driving system, the detected bearing radial loading mechanism 7 and the main shaft vibration monitoring mechanism 8;
the axial loading mechanism 6 of the bearing to be tested is loaded on the outer ring of the bearing 9 to be tested;
The radial loading mechanism 7 of the bearing to be tested is loaded on the main shaft 5 based on a sliding bearing or a non-contact electromagnetic force, and transmits loading force to an inner ring of the bearing to be tested 9;
the main shaft vibration monitoring mechanism 8 is based on a high-speed high-definition camera or an optical vibration tester;
two or two pairs of bearings 9 to be tested;
the bearing bracket ring 10 is connected with the tested bearing 9 and the main bracket 2 of the testing device, and can be matched with bracket rings with different sizes to match with different types of tested bearings 9;
a drive system, wherein:
The driving system stator 11 consists of a metal ring and an inductance copper coil, wherein the inductance copper coil surrounds the inside of the metal ring according to a certain surrounding rule, and alternating current is passed through the inductance copper coil to generate electromagnetic force, so that the driving system rotor 12 rotates, and the driving system stator 11 is fixed in the running process of the testing device;
The driving system rotor 12 is composed of a permanent magnet and an annular metal piece, and can be fixed on the main shaft 5 through the permanent magnet (interference fit) after assembly, and the driving system rotor 12 rotates to enable the main shaft 5 to rotate in the running process of the testing device.
As shown in fig. 1-2, the mounting steps of the device for testing the service performance and the service life of the bearing of the invention are as follows:
The main support 2 of the testing device is fixed on the base 1 of the testing device, the stator 11 of the driving system is installed in the inner cavity of the main support 2 of the testing device, after the stator 11 of the driving system is installed, the power supply and the cooling water inlet/outlet of the stator 11 of the driving motor are connected in the cooling and power supply interface 3 of the driving system, the rotor 12 of the driving system and the bearing 9 to be tested are installed on the main shaft 5, the main shaft 5 horizontally penetrates through the inner cavity of the main support 2 of the testing device, the rotor 12 of the driving system and the bearing 9 to be tested are positioned and fixed in the inner cavity of the main support 2 of the testing device, the bearing support ring 10 is arranged between the outer ring of the bearing 9 to be tested and the inner cavity of the main support 2 of the testing device, the axial loading mechanism 6 of the bearing to be tested is installed on the main support 2 of the testing device, the axial loading mechanism 6 of the bearing to be tested corresponds to the bearing support ring 10, the tested bearing axial loading mechanism 6 loads the tested bearing 9 axially through the bearing bracket ring 10 and the outer ring of the tested bearing 9, a temperature sensor and a vibration sensor are respectively arranged in the tested bearing temperature and vibration sensor mounting hole 4 of the testing device, the temperature sensor and the vibration sensor respectively extend into the inner cavity of the main bracket 2 of the testing device, the tested bearing radial loading mechanism 7 and the main shaft vibration monitoring mechanism 8 are respectively arranged on the base 1 of the testing device and on two sides of the main bracket 2 of the testing device, the tops of the two tested bearing radial loading mechanisms 7 are respectively matched with the bottoms of two ends of the main shaft 5 correspondingly, the two main shaft vibration monitoring mechanisms 8 are respectively matched with the outer sides of two ends of the main shaft 5, the main shaft 5 is loaded radially through the tested bearing radial loading mechanisms 7, a certain pre-tightening axial force is applied to the tested bearing 9 through the tested bearing axial loading mechanism 6, the main shaft 5 rotates at a high speed under the support of the detected bearing 9 and the non-contact drive of the drive system, the test device is started in operation, a certain radial load is applied to the main shaft rotating at a high speed through the detected bearing radial loading mechanism 7, the detected bearing 9 rotates under the applied axial and radial loads, and the corresponding main shaft vibration monitoring mechanism 8 measures the runout and vibration of the main shaft 5 in the rotating process and performs recording analysis; meanwhile, temperature information and vibration information of the outer ring of the bearing 9 to be measured are obtained through a temperature sensor and a vibration sensor fixed at the temperature of the bearing to be measured and the vibration sensor mounting hole 4.
As shown in fig. 1-2, the test method and the working principle of the invention are as follows:
The driving system stator 11 consists of a metal ring and an inductive copper coil, can generate an alternating magnetic field after passing through alternating current, and drives the driving system rotor 12 on the main shaft 5 to rotate through non-contact electromagnetic force. Wherein: the stator 11 of the driving system is fixed relative to the detected bearings 9, the rotor 12 of the driving system drives the inner rings of the detected bearings 9 through the main shaft 5, in the whole operation process, the main shaft 5 is supported by only two detected bearings 9, meanwhile, the power source of the main shaft 5 is in non-contact driving, and the driving system provides only torque for the main shaft without axial and radial loading.
Starting a testing device, driving a main shaft 5 through a driving system, controlling the rotating speed of a tested bearing 9, adjusting radial and axial loads according to testing requirements, acquiring vibration of an outer ring of the tested bearing 9 and the temperature of the outer ring through temperature and vibration sensors, analyzing service performance and service life of the bearing through a main shaft vibration signal (representing a vibration signal of an inner ring of the tested bearing 9) obtained through a main shaft vibration monitoring mechanism 8.
The results show that the invention is realized by using a series of designs: the bearing performance testing device is characterized in that a tested bearing and a driving system are integrally designed; the concentric positioning design of the tested bearing and the driving system in the bearing performance testing device; the non-contact radial loading design of the bearing testing device; the non-contact vibration monitoring design of the bearing testing device; the bearing testing device is simple and compact in appearance design; the bearing test device is designed by multiple types of tested bearing replacement schemes; the bearing testing device is loaded, monitored and driven to realize multi-system modular design. On one hand, interference factors of a plurality of testing devices can be avoided, and the service performance of the tested bearing is truly reflected. On the other hand, unpredictable extra load is avoided from being brought to the transmission main shaft, the external applied load is consistent with the load born by the tested bearing, and the accuracy of subsequent data analysis is ensured.
Claims (7)
1. The device is characterized by comprising a testing device base, a testing device main support, a main shaft, a tested bearing axial loading mechanism, a tested bearing radial loading mechanism, a bearing support ring, a driving system stator and a driving system rotor, and the specific structure is as follows:
The main support of the testing device is fixed on the base of the testing device, a driving system stator is arranged in the inner cavity of the main support of the testing device, a driving system rotor and a tested bearing are arranged on a main shaft, the main shaft horizontally penetrates through the inner cavity of the main support of the testing device, the driving system rotor and the tested bearing are positioned in the inner cavity of the main support of the testing device, and the main shaft is supported by the tested bearing; a bearing support ring is arranged between an outer bearing ring to be tested and an inner cavity of a main support of the testing device, an axial loading mechanism of the bearing to be tested is arranged on the main support of the testing device, the axial loading mechanism of the bearing to be tested corresponds to the bearing support ring, a radial loading mechanism of the bearing to be tested and a main shaft vibration monitoring mechanism are respectively arranged on a base of the testing device and on two sides of the main support of the testing device, the tops of the two radial loading mechanisms of the bearing to be tested are respectively matched with the bottoms of two ends of a main shaft correspondingly, and the two vibration monitoring mechanisms of the main shaft are respectively matched with the outer sides of the two ends of the main shaft correspondingly;
the top of the main support of the testing device is provided with a temperature and vibration sensor mounting hole of the tested bearing, a temperature sensor and a vibration sensor are respectively arranged in the temperature and vibration sensor mounting hole of the tested bearing, the temperature sensor and the vibration sensor respectively extend to the inner cavity of the main support of the testing device, and the temperature information and the vibration information of the outer ring of the tested bearing are obtained through the temperature sensor and the vibration sensor fixed in the temperature and the vibration sensor mounting hole of the tested bearing;
the axial loading mechanism of the bearing to be tested is loaded on the outer ring of the bearing to be tested; the radial loading mechanism of the bearing to be tested is loaded on the main shaft based on the sliding bearing or the non-contact electromagnetic force and transmits loading force to the inner ring of the bearing to be tested.
2. The device for testing the service performance and the service life of the bearing according to claim 1, wherein a driving system cooling and power interface is arranged on the top of the main support of the testing device, a power supply and a cooling water inlet/outlet of a stator of a driving motor are connected in the driving system cooling and power interface, and the driving system cooling and power interface is communicated with the inner cavity of the main support of the testing device.
3. The device for testing the service performance and the service life of the bearing according to claim 1, wherein the axial loading mechanism of the bearing to be tested loads the bearing to be tested axially through the bearing bracket ring and the outer ring of the bearing to be tested.
4. The device for testing the service performance and the service life of the bearing according to claim 1, wherein the main shaft vibration monitoring mechanism is a high-speed high-definition camera or an optical vibration tester.
5. The device for testing the service performance and the service life of a bearing according to claim 1, wherein the number of the bearings to be tested is two or two.
6. The device for testing the service performance and the service life of the bearing according to claim 1, wherein the stator of the driving system consists of a metal ring and an inductive copper coil, the inductive copper coil surrounds the inside of the metal ring, and electromagnetic force is generated in the inductive copper coil through alternating current, so that the rotor of the driving system rotates, and the stator of the driving system is fixed in the running process of the device; the driving system rotor consists of a permanent magnet and an annular metal piece, is fixed on the main shaft through the permanent magnet after being assembled, and rotates in the running process of the device, so that the main shaft rotates.
7. The device for testing the service performance and the service life of the bearing according to claim 1, wherein the radial loading mechanism of the bearing to be tested is used for radially loading the main shaft, the axial loading mechanism of the bearing to be tested is used for applying a pretightening axial force to the bearing to be tested, the main shaft is supported by the bearing to be tested and rotates under the non-contact driving of the driving system, the radial loading mechanism of the bearing to be tested is used for applying a radial load to the main shaft rotating at a high speed, the bearing to be tested rotates under the applied axial and radial loads, and the corresponding main shaft vibration monitoring mechanism is used for measuring the runout and vibration of the main shaft in the rotating process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010507829.6A CN113834654B (en) | 2020-06-05 | 2020-06-05 | Bearing service performance and service life testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010507829.6A CN113834654B (en) | 2020-06-05 | 2020-06-05 | Bearing service performance and service life testing device |
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| CN113834654A CN113834654A (en) | 2021-12-24 |
| CN113834654B true CN113834654B (en) | 2024-06-28 |
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| CN114739675B (en) * | 2022-05-11 | 2023-05-09 | 北京航空航天大学 | A roller-raceway failure principle test device driven by frequency conversion electromagnetic |
| CN117191395B (en) * | 2023-08-15 | 2024-08-23 | 上海大学 | Combined experiment testing device for radial and thrust combined bearing of air foil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212321072U (en) * | 2020-06-05 | 2021-01-08 | 中国科学院金属研究所 | Bearing service performance and life testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1278647A2 (en) * | 1985-04-08 | 1986-12-23 | Предприятие П/Я А-3697 | Rack for testing bearings in vacuum |
| DE102009026943B3 (en) * | 2009-06-15 | 2010-12-02 | Sven Henze | Bearing test device for testing of bearing units designed for bearing of rotor of wind power plant or shaft standing in drive connection with rotor, has torsional vibration chain, which is excited by drive unit and excitation unit |
| DE102011054112A1 (en) * | 2011-09-30 | 2013-04-04 | Friedrich Klinger | Testing apparatus for simulation of operation load of wind turbine, has rotary drive unit that supports load components mounted on rotor of drive motor and coupled to stator of generator of wind turbine rotary drive element |
| DE102012103046A1 (en) * | 2012-04-10 | 2013-10-10 | Friedrich Klinger | Device for load tests on wind turbines |
| CN105897514B (en) * | 2016-06-08 | 2023-07-11 | 大唐（通辽）霍林河新能源有限公司 | Dynamic loading platform for communication slip ring of wind generating set |
| CN105954035B (en) * | 2016-06-25 | 2018-07-06 | 河南科技大学 | A kind of minitype gas bearing tester and test method |
| CN108181108B (en) * | 2017-11-28 | 2020-05-19 | 广州市昊志机电股份有限公司 | Permanent magnet motor test tool structure |
| CN108318165B (en) * | 2017-12-14 | 2020-11-13 | 西安益翔航电科技有限公司 | Bearing dynamic friction torque tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212321072U (en) * | 2020-06-05 | 2021-01-08 | 中国科学院金属研究所 | Bearing service performance and life testing device |
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