CN105651514A - Comprehensive performance testing device for rolling ball bearing - Google Patents
Comprehensive performance testing device for rolling ball bearing Download PDFInfo
- Publication number
- CN105651514A CN105651514A CN201610143283.4A CN201610143283A CN105651514A CN 105651514 A CN105651514 A CN 105651514A CN 201610143283 A CN201610143283 A CN 201610143283A CN 105651514 A CN105651514 A CN 105651514A
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- bearing
- test
- test bearing
- spacer ring
- power transmission
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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
Abstract
The invention discloses a comprehensive performance testing device for a rolling ball bearing. The comprehensive performance testing device comprises a motor support, a motor, a shaft, a torque sensor, two temperature measurement sensors, an acceleration sensor, an axial load loading device and a test bearing pair. The motor unceasingly rotates at a certain rotating speed and drives the shaft to move in the same way. A test bearing is arranged in a bearing pedestal, and the shaft drives the inner ring to rotate. The torque sensor collects a torque signal generated by the test bearing due to the friction effect in the rotating process. The acceleration sensor is used for collecting a vibration signal generated by the bearing in the rotating process in the vertical direction. The temperature measurement sensors are used for collecting temperature effect signals generated by the test bearing in the running process due to heat generated by friction. Friction torque, vibration and temperature collection are integrated, on-line monitoring and collecting of the running performance of three types of bearings are achieved, and the comprehensive performance testing device has the advantages of being simple in structural design, small in size, convenient to machine and assemble, high in integration degree, and the like.
Description
Technical field
Invention relates to a kind of assay device, is specifically related to a kind of rolling bearing assay device, belongs to rolling bearing technical field of measurement and test.
Background technology
Effective acquisition bearing dynamic technique parameter in running is the important research content in bearing field tests and tribology research field, by designing the dynamic running process of bench test monitoring bearing, it is main research means and the method for assessment bearing and lubricating status thereof.
Existing rolling ball bearing test device, is only provided that the single parameter test of moment of friction signal testing or vibration signal test mostly, it is impossible to the dynamic changing process of performance in reflection bearing running comprehensively.
Existing rolling ball bearing test device adopts complicated drive system, generally adopts array spring bearing, add the unstability of system in axle system. Simultaneously for vibration signals collecting, the vibration signal of spring bearing reaches acceleration transducer also by the rotation of axle, and confuses in same spectrogram with test bearing, and follow-up signal processing is caused great interference.
Existing rolling ball bearing test device often adopts complex load maintainer that test bearing is applied axially loaded power, and such as hydraulic loading mechanism, lever-loading etc. so that the structure of whole assay device is complicated, processing and assembling difficulty increase.
Summary of the invention
In view of this, the present invention provides a kind of simple in construction, it is easy to assembly to process, disturb little rolling ball bearing comprehensive performance testing device, and this assay device can obtain rolling ball bearing dynamic changing process of moment of friction signal, vibration signal and three kinds of operational factors of temperature signal in running simultaneously.
Described rolling ball bearing comprehensive performance testing device includes: bearing, motor, power transmission shaft, torque sensor, temperature transducer, acceleration transducer, axial load charger and test bearing pair.
Described test bearing forms by two rolling ball bearings.
Motor is fixed in one end of described bearing, and the other end is fixed for supporting the bearing block of test bearing pair; The output shaft of described motor is connected with the connection axle being provided with torque sensor by the first shaft coupling, and the other end of this connection axle is connected with described power transmission shaft by the second shaft coupling; Described torque sensor is for obtaining the test bearing moment of torsion to producing in running due to frictional force;
Described power transmission shaft is installed axial load charger and test bearing pair;Described axial load charger includes: locking spacer ring, loading lock screw and loading spacer ring; On described power transmission shaft from itself and the link of the second shaft coupling, sequentially coaxially suit locking spacer ring, loading spacer ring and test bearing pair, described locking spacer ring fixes on power transmission shaft by loading locking screw lock, and described motor drives the inner ring of test bearing pair to rotate by power transmission shaft; Have for preventing the test bearing shoulder block to moving axially at the outer coaxial package of described loading spacer ring;
In the temperature sensor that is provided above of described test bearing pair, described temperature sensor is contacted by the outer ring of one bearing of mode and test bearing centering of through hole, for obtaining the heat effect signal produced due to rubbing action;
It is provided above acceleration transducer, for testing its vibration signal of vertical direction in running at described test bearing pair.
Described power transmission shaft is installed two axial load chargers and two test bearings pair, said two test bearing to being oppositely arranged, between separated by spacer ring.
Beneficial effect:
(1) the rolling bearing comprehensive performance test device of the present invention is provided with torque sensor, acceleration transducer and temperature sensor at different structure unit dexterously, thus can obtain test bearing moment of friction in running, vibration and temperature data simultaneously, by the analysis to three kinds of parameters, can be in operation the situation of change of performance by development test bearing from different perspectives.
(2) the axle system of rolling bearing comprehensive performance test device of the present invention do not have extra spring bearing, it is only test bearing pair, namely spring bearing and test bearing unite two into one, and fundamentally avoid the interference that test system is brought by extra spring bearing.
(3) mode adopting omnipotent pairing is realized axially loaded by the test bearing in rolling bearing comprehensive performance test device of the present invention, compared with testing, with traditional bearing, the load mode (such as hydraulic pressure, lever etc.) that device adopts, load mode in the present invention is not related to the load maintainer of complexity, axial load can be determined before the test so that apparatus structure is more simple, simplify assembling and process of the test by the mode of omnipotent pairing.
(4) the rolling bearing comprehensive performance test device of the present invention can be not only used for short-term bearing testing experiment, it may also be used for long-term bearing testing experiment (such as life assessment test); Can be used for studying the runnability of different rotating speeds, axial load lower bearing.
(5) adopting the rolling bearing comprehensive performance test device of the present invention, two pairs of bearings can be tested by single test, effectively raises test efficiency.
Accompanying drawing explanation
Fig. 1 is the rolling bearing comprehensive performance test device front view of the present invention;
Fig. 2 is the scheme of installation of axial load charger and test bearing pair;
Fig. 3 is the rolling bearing comprehensive performance test device structure three-dimensional figure of the present invention.
Wherein: the vertical bearing of 1-, 2-motor, 3-the first shaft coupling, 4-torque sensor, 5-the second shaft coupling, 6-first locks spacer ring, 7-first loads lock screw, 8-the first elastic tape, 9-first loads spacer ring, 10-the first shoulder block, 11-the first temperature sensor, 12-acceleration transducer, 13-rolling ball bearing A, 14-rolling ball bearing B, 15-the second temperature sensor, 16-the second shoulder block, 17-power transmission shaft, 18-second locks spacer ring, 19-second loads lock screw, 20-the second elastic tape, 21-second loads spacer ring, 22-rolling ball bearing C, 23-rolling ball bearing D, 24-bearing block, 25-spacer ring, 26-horizontal seat
Detailed description of the invention
Develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
The present embodiment provides a kind of rolling ball bearing comprehensive performance testing device, obtains rolling ball bearing dynamic changing process of moment of friction signal, vibration signal and three kinds of operational factors of temperature signal in running simultaneously, and process easy to assembly, disturb little.
The concrete structure of this assay device as shown in Figure 1, Figure 2 and Figure 3, including motor support base, motor 2,4, two temperature transducers of torque sensor, acceleration transducer 12, axial load charger and test bearing. Described test bearing is two pairs of rolling ball bearings, namely two pairs of rolling ball bearings is tested by this assay device simultaneously.
Described motor support base includes horizontal seat 26 and is fixed in the vertical bearing 1 of horizontal seat 26 end, described motor 2 is fixed on vertical bearing 1, the power output shaft of motor 2 is connected with the connection axle being provided with torque sensor 4 by the first shaft coupling 3, and the other end of this connection axle is connected with axial load charger and test bearing by the second shaft coupling 5. Described torque sensor 4 is arranged on the power intake of test bearing pair, for obtaining its moment of torsion produced in running, i.e. moment of friction due to frictional force.
Described axial load charger includes: power transmission shaft 17, first locks spacer ring the 6, second locking spacer ring the 18, first loading lock screw the 7, second loading lock screw the 19, first loading spacer ring 9 and second and loads spacer ring 21. Described power transmission shaft 17 is connected with described second shaft coupling 5, on power transmission shaft 17 from the link of the second shaft coupling 5, be sequentially coaxially set with first locking spacer ring the 6, first elastic tape 8, first load spacer ring the 9, first test bearing to (being made up of rolling ball bearing A13 and rolling ball bearing B14), spacer ring the 25, second test bearing to (being made up of rolling ball bearing C22 and rolling ball bearing D23), second load spacer ring the 21, second elastic tape 20 and second and load lock screw 19. Loading the outer coaxial package of spacer ring 9 described first and have for preventing first test bearing the first shoulder block 10 to moving axially, loading the outer coaxial package of spacer ring 21 described second has for preventing second test bearing the second shoulder block 16 to moving axially. Bearing block for supporting two described test bearings pair is fixed on described horizontal seat 26.
Described first locking spacer ring 6 is locked on power transmission shaft 17 by the first loading lock screw 7, then passes through the first loading spacer ring 9 to the first test bearing to applying axial load; Second locking spacer ring 18 is locked on power transmission shaft 17 by the second loading lock screw 19, then passes through the second loading spacer ring 21 to the second test bearing to applying axial load. The axial load size of two test bearings pair is determined by the mode of omnipotent pairing. Being absent from extra spring bearing in this test device, two test bearing, to being spring bearing, are again test bearing simultaneously.
It is arranged above a temperature sensor (being positioned at the first temperature sensor 11 to surface of first test bearing as shown in Figure 2, be positioned at the second temperature sensor 15 to surface of second test bearing) in each test bearing pair. Described temperature sensor is contacted with the outer ring of a bearing of test bearing centering by the mode of through hole, for obtaining the heat effect signal produced due to rubbing action.
The test of two described bearings to be arranged above acceleration transducer 12, for testing its vibration signal of vertical direction in running.
The operation principle of this device is: motor 2 rotates continuously with certain rotating speed, and drives power transmission shaft 17 to do same motion, and test bearing, to being installed in bearing block 24, is driven the inner ring of test bearing pair to rotate by power transmission shaft 17. Torque sensor is arranged on the outfan of motor, for gathering the torque signals (moment of friction) that bearing produces in rotation process due to rubbing action; Acceleration transducer is arranged on bearing block vertical direction, for gathering the vibration signal of the vertical direction that bearing produces in operation process; Temperature transducer is arranged on above test bearing, and is contacted with test bearing outer collar by through hole, for the temperature effects signal that collecting test bearing produces due to frictional heat in operation process. Moment of friction signal, vibration signal and temperature signal that system gathers in operation process are delivered to acquisition software by acquisition system, it is achieved the on-line monitoring of three kinds of service datas and collection.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (2)
1. a rolling ball bearing comprehensive performance testing device, it is characterised in that including: bearing, motor, power transmission shaft, torque sensor, temperature transducer, acceleration transducer, axial load charger and test bearing pair;
Described test bearing forms by two rolling ball bearings;
Motor is fixed in one end of described bearing, and the other end is fixed for supporting the bearing block of test bearing pair; The output shaft of described motor is connected with the connection axle being provided with torque sensor by the first shaft coupling, and the other end of this connection axle is connected with described power transmission shaft by the second shaft coupling; Described torque sensor is for obtaining the test bearing moment of torsion to producing in running due to frictional force;
Described power transmission shaft is installed axial load charger and test bearing pair; Described axial load charger includes: locking spacer ring, loading lock screw and loading spacer ring; On described power transmission shaft from itself and the link of the second shaft coupling, sequentially coaxially suit locking spacer ring, loading spacer ring and test bearing pair, described locking spacer ring fixes on power transmission shaft by loading locking screw lock, and described motor drives the inner ring of test bearing pair to rotate by power transmission shaft; Have for preventing the test bearing shoulder block to moving axially at the outer coaxial package of described loading spacer ring;
In the temperature sensor that is provided above of described test bearing pair, described temperature sensor is contacted by the outer ring of one bearing of mode and test bearing centering of through hole, for obtaining the heat effect signal produced due to rubbing action;
It is provided above acceleration transducer, for testing its vibration signal of vertical direction in running at described test bearing pair.
2. rolling ball bearing comprehensive performance testing device according to claim 1, it is characterized in that: two axial load chargers and two test bearings pair are installed on described power transmission shaft, said two test bearing to being oppositely arranged, between separated by spacer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143283.4A CN105651514A (en) | 2016-03-14 | 2016-03-14 | Comprehensive performance testing device for rolling ball bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143283.4A CN105651514A (en) | 2016-03-14 | 2016-03-14 | Comprehensive performance testing device for rolling ball bearing |
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| CN105651514A true CN105651514A (en) | 2016-06-08 |
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| CN201610143283.4A Pending CN105651514A (en) | 2016-03-14 | 2016-03-14 | Comprehensive performance testing device for rolling ball bearing |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973604A (en) * | 2016-07-01 | 2016-09-28 | 宁波慈兴精密传动科技有限公司 | Electric automobile driving motor bearing high temperature high speed high load endurance testing apparatus |
| CN106092576A (en) * | 2016-06-20 | 2016-11-09 | 苏州东菱科技有限公司 | Multifunction bearing pilot system |
| CN106441550A (en) * | 2016-09-13 | 2017-02-22 | 安徽工程大学 | Bearing vibration signal acquisition device |
| CN107063688A (en) * | 2017-04-05 | 2017-08-18 | 上海大学 | Match angular contact ball bearing Dynamic wear test device |
| CN107727398A (en) * | 2017-10-12 | 2018-02-23 | 中国航发哈尔滨轴承有限公司 | Low-speed heave-load exerciser |
| CN108225773A (en) * | 2018-02-10 | 2018-06-29 | 安徽摩格恩轴承有限公司 | Bear vibration heat generation detection device |
| CN108827633A (en) * | 2018-04-25 | 2018-11-16 | 重庆大学 | Match rolling bearing intelligent regulator device |
| CN108918128A (en) * | 2018-08-02 | 2018-11-30 | 南京梵科智能科技有限公司 | A kind of intelligent apparatus for rotating machinery progress fault location |
| CN108918129A (en) * | 2018-08-02 | 2018-11-30 | 南京梵科智能科技有限公司 | A kind of intelligent apparatus of pair of slewing implementing monitoring |
| CN109211551A (en) * | 2018-09-14 | 2019-01-15 | 南京梵科智能科技有限公司 | A kind of trouble-shooter for rotating machinery |
| CN109342058A (en) * | 2018-10-19 | 2019-02-15 | 东莞理工学院 | A kind of Mechanical Manufacture System bearing operation frictional force real-time monitoring device |
| CN109374297A (en) * | 2018-12-13 | 2019-02-22 | 中国船舶重工集团公司第七〇四研究所 | Slide thrust bearing experimental rig |
| CN109752271A (en) * | 2019-03-03 | 2019-05-14 | 王志辉 | A kind of the non-uniform temperature field abrasion test device and its test method of material |
| CN110426147A (en) * | 2019-08-14 | 2019-11-08 | 燕山大学 | The device and method of deep groove ball bearing moment of friction are measured under gravity or microgravity |
| CN110887590A (en) * | 2019-12-04 | 2020-03-17 | 兰州华汇仪器科技有限公司 | High-speed bearing friction tester |
| CN110887589A (en) * | 2019-12-04 | 2020-03-17 | 兰州华汇仪器科技有限公司 | Method for measuring friction torque of bearing during rotation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118869A (en) * | 2004-10-19 | 2006-05-11 | Nsk Ltd | Defect detector for rolling bearing, and defect detection method for the rolling bearing |
| CN101339094A (en) * | 2008-09-01 | 2009-01-07 | 洛阳工铭机电设备有限公司 | Helicopter automatic tilting device large-sized thin-wall bearing intelligent checking analytical method and device |
| CN102175412A (en) * | 2011-03-10 | 2011-09-07 | 上海交通大学 | Rotor torsion oscillation testing device and testing method thereof |
| CN102564764A (en) * | 2011-12-31 | 2012-07-11 | 洛阳工铭机电设备有限公司 | Aircraft engine spindle bearing testing machine |
| CN202720121U (en) * | 2012-06-02 | 2013-02-06 | 上海大学 | Precision miniature bearing dynamic performance testing device |
| CN103105226A (en) * | 2013-01-21 | 2013-05-15 | 中国航天科技集团公司第五研究院第五一〇研究所 | Pairing bearing vibration signal collection device |
| CN105136457A (en) * | 2015-06-03 | 2015-12-09 | 重庆大学 | High/low-temperature controllable multi-specification rolling bearing test bench |
-
2016
- 2016-03-14 CN CN201610143283.4A patent/CN105651514A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118869A (en) * | 2004-10-19 | 2006-05-11 | Nsk Ltd | Defect detector for rolling bearing, and defect detection method for the rolling bearing |
| CN101339094A (en) * | 2008-09-01 | 2009-01-07 | 洛阳工铭机电设备有限公司 | Helicopter automatic tilting device large-sized thin-wall bearing intelligent checking analytical method and device |
| CN102175412A (en) * | 2011-03-10 | 2011-09-07 | 上海交通大学 | Rotor torsion oscillation testing device and testing method thereof |
| CN102564764A (en) * | 2011-12-31 | 2012-07-11 | 洛阳工铭机电设备有限公司 | Aircraft engine spindle bearing testing machine |
| CN202720121U (en) * | 2012-06-02 | 2013-02-06 | 上海大学 | Precision miniature bearing dynamic performance testing device |
| CN103105226A (en) * | 2013-01-21 | 2013-05-15 | 中国航天科技集团公司第五研究院第五一〇研究所 | Pairing bearing vibration signal collection device |
| CN105136457A (en) * | 2015-06-03 | 2015-12-09 | 重庆大学 | High/low-temperature controllable multi-specification rolling bearing test bench |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092576A (en) * | 2016-06-20 | 2016-11-09 | 苏州东菱科技有限公司 | Multifunction bearing pilot system |
| CN105973604A (en) * | 2016-07-01 | 2016-09-28 | 宁波慈兴精密传动科技有限公司 | Electric automobile driving motor bearing high temperature high speed high load endurance testing apparatus |
| CN106441550A (en) * | 2016-09-13 | 2017-02-22 | 安徽工程大学 | Bearing vibration signal acquisition device |
| CN107063688B (en) * | 2017-04-05 | 2019-06-25 | 上海大学 | Match angular contact ball bearing Dynamic wear test device |
| CN107063688A (en) * | 2017-04-05 | 2017-08-18 | 上海大学 | Match angular contact ball bearing Dynamic wear test device |
| CN107727398A (en) * | 2017-10-12 | 2018-02-23 | 中国航发哈尔滨轴承有限公司 | Low-speed heave-load exerciser |
| CN108225773A (en) * | 2018-02-10 | 2018-06-29 | 安徽摩格恩轴承有限公司 | Bear vibration heat generation detection device |
| CN108827633A (en) * | 2018-04-25 | 2018-11-16 | 重庆大学 | Match rolling bearing intelligent regulator device |
| CN108827633B (en) * | 2018-04-25 | 2020-03-31 | 重庆大学 | Intelligent debugging device for paired rolling bearings |
| CN108918128A (en) * | 2018-08-02 | 2018-11-30 | 南京梵科智能科技有限公司 | A kind of intelligent apparatus for rotating machinery progress fault location |
| CN108918129A (en) * | 2018-08-02 | 2018-11-30 | 南京梵科智能科技有限公司 | A kind of intelligent apparatus of pair of slewing implementing monitoring |
| CN109211551A (en) * | 2018-09-14 | 2019-01-15 | 南京梵科智能科技有限公司 | A kind of trouble-shooter for rotating machinery |
| CN109342058A (en) * | 2018-10-19 | 2019-02-15 | 东莞理工学院 | A kind of Mechanical Manufacture System bearing operation frictional force real-time monitoring device |
| CN109374297A (en) * | 2018-12-13 | 2019-02-22 | 中国船舶重工集团公司第七〇四研究所 | Slide thrust bearing experimental rig |
| CN109374297B (en) * | 2018-12-13 | 2020-08-04 | 中国船舶重工集团公司第七〇四研究所 | Sliding thrust bearing test device |
| CN109752271A (en) * | 2019-03-03 | 2019-05-14 | 王志辉 | A kind of the non-uniform temperature field abrasion test device and its test method of material |
| CN110426147A (en) * | 2019-08-14 | 2019-11-08 | 燕山大学 | The device and method of deep groove ball bearing moment of friction are measured under gravity or microgravity |
| CN110426147B (en) * | 2019-08-14 | 2020-10-09 | 燕山大学 | Device and method for measuring friction torque of deep groove ball bearing under gravity or microgravity |
| CN110887590A (en) * | 2019-12-04 | 2020-03-17 | 兰州华汇仪器科技有限公司 | High-speed bearing friction tester |
| CN110887589A (en) * | 2019-12-04 | 2020-03-17 | 兰州华汇仪器科技有限公司 | Method for measuring friction torque of bearing during rotation |
| CN110887590B (en) * | 2019-12-04 | 2021-04-23 | 兰州华汇仪器科技有限公司 | High-speed bearing friction tester |
| CN110887589B (en) * | 2019-12-04 | 2021-08-17 | 兰州华汇仪器科技有限公司 | Method for measuring friction torque of bearing during rotation |
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Application publication date: 20160608 |