CN110823571B - Bearing friction torque detection device - Google Patents
Bearing friction torque detection device Download PDFInfo
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- CN110823571B CN110823571B CN201911003005.9A CN201911003005A CN110823571B CN 110823571 B CN110823571 B CN 110823571B CN 201911003005 A CN201911003005 A CN 201911003005A CN 110823571 B CN110823571 B CN 110823571B
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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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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Abstract
The invention discloses a bearing friction torque detection device, which comprises a driving mechanism, a loading mechanism and a torque sensor, wherein the driving mechanism comprises an air main shaft, a driving motor and a mandrel for sleeving a bearing to be detected, the driving motor, the torque sensor, the air main shaft and the mandrel are sequentially and fixedly connected, the loading mechanism comprises a loading sleeve sleeved outside the bearing to be detected, a first loading assembly for applying axial load to the loading sleeve and a second loading assembly for applying radial load to the loading sleeve, the first loading assembly comprises a first thin rope and a loading rod, one end of the loading rod is connected with the loading sleeve, the axis of the loading rod is mutually vertical to the axis of the bearing to be detected, the first balancing weight is connected with the loading rod through the first thin rope, the first loading assembly further comprises a guide assembly for changing the tension direction of the first thin rope acting on the loading rod, the second loading assembly comprises a lengthening rod and a second balancing weight, the extension bar and the bearing to be measured are coaxially arranged and fixedly connected with the loading sleeve, and the second balancing weight is arranged at one end of the extension bar, which is far away from the loading sleeve.
Description
Technical Field
The invention belongs to the technical field of bearing detection, and particularly relates to a bearing friction torque detection device.
Background
The bearing is one of important parts in modern mechanical equipment, the performance of the bearing affects the function, reliability and service life of the whole machine, the bearing has friction torque, and the friction torque of the bearing has certain influence on the application range and service life of the bearing under different working environments and working states.
In order to enable the bearing to meet the requirements of actual working conditions better, the bearing needs to be correspondingly detected in the processes of design, development, production and manufacturing, when the friction torque of the existing bearing is detected, the axial load is generally only loaded on the bearing, and in some use scenes, the bearing is usually subjected to a certain bending moment under the condition of bearing a certain fixed load, for example, mechanisms such as a transmission shaft and the like, and the detection result of the existing friction torque detection device is different from the actual result.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a friction torque detection device which can apply a certain axial load to a bearing and enable the bearing to bear a certain bending moment.
In order to achieve the purpose, the invention adopts the technical scheme that: a bearing friction torque detection device comprises a driving mechanism, a loading mechanism and a torque sensor, wherein the driving mechanism comprises a driving motor and a mandrel for arranging a bearing sleeve to be detected, the mandrel is in interference fit with an inner ring of the bearing to be detected, the driving mechanism further comprises an air spindle, the driving motor, the torque sensor, the air spindle and the mandrel are sequentially and fixedly connected, the loading mechanism comprises a loading sleeve arranged outside the bearing to be detected in a sleeved mode, a first loading assembly for applying axial load to the loading sleeve and a second loading assembly for applying radial load to the loading sleeve, the loading sleeve is in interference fit with an outer ring of the bearing to be detected, the first loading assembly comprises a first balancing weight and a loading rod, one end of the loading rod is fixedly connected with the loading sleeve, the loading rod is perpendicular to the axis of the bearing to be detected, the first balancing weight is connected with the loading rod through a first thin rope, first loading subassembly is still including the direction subassembly that changes the pulling force direction of first string effect on the loading arm, second loading subassembly includes extension bar and second balancing weight, extension bar and the coaxial setting of bearing that awaits measuring and with loading cover fixed connection, the one end of loading cover is kept away from at the extension bar to the setting of second balancing weight.
In the technical scheme, during detection, a bearing to be detected is fixed on a mandrel, a loading sleeve is fixed with an outer ring of the bearing to be detected, axial load and radial load are respectively applied to the bearing to be detected by the first loading assembly and the second loading assembly through the loading sleeve, the load of the bearing to be detected in an actual operation environment is simulated, a detection result of the bearing to be detected is more practical, the air spindle greatly reduces the mixing of external additional moment, the experimental result is more accurate, the first balancing weight in the first loading assembly gives radial tension to the loading rod through the first thin rope, the tension direction of the first thin rope is changed through the guide assembly, the tension of the first thin rope is parallel to the axis of the bearing to be detected, the second balancing weight in the second loading assembly gives downward force to the extension rod through self gravity, and the magnitude of the force can be adjusted by adjusting the length of the extension rod and different balancing weights, first loading subassembly and second loading subassembly input cost are low, and the running cost is low, simple structure, and the restriction of device installation place is little, and is low to the requirement in installation place, makes things convenient for the device equipment, and the different bearing that awaits measuring of convenient change improves detection efficiency.
As a further arrangement of the invention, the number of the loading rods is two, the two loading rods are coaxially arranged and are respectively arranged at two sides of the loading sleeve, the number of the guide assemblies is one pair or two pairs, and each pair of the guide assemblies is arranged diagonally.
Among the above-mentioned technical scheme, two loading poles are coaxial to be set up, and the direction subassembly is the diagonal angle setting, makes two loading poles effect be located same straight line at the power that the loading was sheathe in, and preferred direction subassembly is two pairs, adjusts the position of balancing weight during convenient the detection, conveniently adjusts the load direction.
As a further arrangement of the invention, the guide assembly comprises a base and a polished rod with two ends penetrating the base, one side of the first thin rope close to the first balancing weight is hung on the polished rod, one end of the first thin rope far away from the first balancing weight is provided with a lantern ring, and the loading rod is provided with an annular groove for the lantern ring to be sleeved with.
Among the above-mentioned technical scheme, the recess supplies the lantern ring cover to establish, can prevent that the influence testing result that slides from appearing in the first string rope in the testing process, and the lantern ring conveniently takes off or installs, makes things convenient for the detection device equipment, and convenient the change when wearing and tearing appear in first string rope.
As a further arrangement of the invention, a connecting block is arranged at one end of the first thin rope far away from the loading rod, and the connecting block is in threaded connection with the first balancing weight.
Among the above-mentioned technical scheme, conveniently change the first balancing weight of different weights.
As a further arrangement of the invention, a stepped mounting groove for mounting the bearing to be tested is arranged on the mandrel, a screwing nut is arranged on one side of the mounting groove, which is far away from the air spindle, and a gasket is arranged between the mounting groove and the screwing nut.
Among the above-mentioned technical scheme, the nut of screwing and mounting groove combined action prevent that the bearing that awaits measuring from appearing the displacement when examining.
As a further arrangement of the present invention, the extension bar and the second loading block are fixed by screw threads.
Among the above-mentioned technical scheme, conveniently change the second balancing weight, conveniently adjust the power of loading on the bearing that awaits measuring.
As a further arrangement of the present invention, the air spindle is fixedly mounted on the spindle base.
Among the above-mentioned technical scheme, make the air spindle more stable when detection device detects, make the testing result more accord with reality.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of portion I of FIG. 3;
FIG. 5 is a schematic connection diagram of a connection block and a first weight block according to an embodiment of the present invention;
FIG. 6 is a perspective view of a second embodiment of the present invention;
fig. 7 is a schematic external view of a third embodiment of the present invention.
Detailed Description
When terms such as "upper" and "lower", "right" and "left" or similar relative expressions are used in the present embodiment, these refer only to the accompanying drawings and are not necessarily actual usage.
The specific embodiment of the invention is shown in fig. 1-7, a bearing friction torque detection device, which comprises a driving mechanism 01, a loading mechanism 02 and a torque sensor 03, wherein the driving mechanism 01 comprises an air main shaft 013, a driving motor 011 and a mandrel 012 for sleeving a bearing 04 to be detected, the mandrel 012 is in interference fit with an inner ring of the bearing 04 to be detected, the driving motor 011, the torque sensor 03, the air main shaft 013 and the mandrel 012 are sequentially and fixedly connected, the mandrel 012 is provided with a stepped mounting groove 0121 for mounting the bearing 04 to be detected, one side of the mounting groove 0121 far away from the air main shaft 013 is provided with a screwing nut 0122, a gasket 0123 is arranged between the mounting groove 0121 and the screwing nut 0122, the screwing nut 0122 and the mounting groove 0121 jointly act to prevent the bearing 04 to be detected from displacement during detection, the air main shaft 013 is fixedly mounted on a main shaft seat 014 to make the air main shaft, the loading mechanism 02 comprises a loading sleeve 021 sleeved outside the bearing 04 to be tested, a first loading component applying axial load to the loading sleeve 021 and a second loading component applying radial load to the loading sleeve 021, the loading sleeve 021 is in interference fit with the outer ring of the bearing 04 to be tested, the first loading component comprises a first weight block 0221 and two loading rods 0222 which are coaxially arranged and are respectively positioned on two sides of the loading sleeve 021, the loading rods 0222 are perpendicular to the axis of the bearing 04 to be tested, the first weight block 0221 and the loading rods 0222 are connected through a first thin rope 0223, the first loading component further comprises a guide component 0224 changing the tensile direction of the first thin rope 0223 acting on the loading rods 0222, the guide component 0224 comprises a base 02241 and a polished rod 02242 with two ends penetrating through the base 02241, one side of the first thin rope 0223 close to the first weight block 0221 is hung on the polished rod 02242, one end of the first thin rope 0223 far away from the first weight block 0221 is provided with a lantern ring 02231, be equipped with the annular groove 02221 that supplies lantern ring 02231 cover to establish on load lever 0222, the recess supplies lantern ring 02231 cover to establish, can prevent in the testing process that first string 0223 from appearing sliding influence testing result, and lantern ring 02231 conveniently takes off or installs, make things convenient for the detection device equipment, conveniently change when wearing and tearing appear in first string 0223, guide component 0224 has two pairs and every is diagonal angle setting to guide component 0224, adjust the position of balancing weight when conveniently detecting, conveniently adjust the load direction, the one end that first string 0223 kept away from load lever 0222 is equipped with connecting block 02232, connecting block 02232 and first balancing weight 0221 threaded connection, conveniently change the first balancing weight 0221 of different weight, second load component includes extension bar 0231 and second balancing weight 0232, extension bar 0231 and the coaxial setting of bearing 04 that awaits measuring and with load cover 021 fixed connection, second balancing weight 0232 sets up the one end that keeps away from load cover 021 at extension bar 0231, the lengthening bar 0231 is connected with the balancing weight through a second string 0233, one end of the second string 0233, far away from the lengthening bar 0231, is provided with a connecting piece, the connecting piece is in threaded connection with the second balancing weight 0232 and is consistent with the connecting mode of the connecting block 02232 and the first balancing weight 0221, so that the replacement is convenient, during detection, the bearing 04 to be detected is fixed on the mandrel 012 firstly, then the loading sleeve 021 is fixed with the outer ring of the bearing 04 to be detected, through the loading sleeve 021, the first loading assembly and the second loading assembly respectively apply axial load and radial load to the bearing 04 to be detected, the load of the bearing 04 to be detected in the actual operation environment is simulated, so that the detection result of the bearing 04 to be detected is more practical, the air spindle 013 greatly reduces the mixing of external additional moment, the experiment result is more accurate, the first balancing weight 0221 in the first loading assembly gives radial tension to the loading bar 0222 through the first string 0223, and the direction of the first string 0224 is changed, make first twine 0223's pulling force parallel with the axis of bearing 04 that awaits measuring, second balancing weight 0232 in the second loading subassembly gives extension bar 0231 decurrent power through self gravity, the accessible is adjusted extension bar 0231's length and the size that the balancing weight of difference comes the regulating power, first loading subassembly and second loading subassembly input cost are low, the running cost is low, simple structure, make things convenient for the device equipment, conveniently change different bearing 04 that awaits measuring, improve detection efficiency.
Example two
The difference of embodiment two with embodiment one is that extension bar 0231 and second balancing weight 0232 directly pass through threaded connection, and it is more stable when detecting that the convenience is second balancing weight 0232, makes the testing result more accord with reality.
EXAMPLE III
The difference between the third embodiment and the first embodiment is that the first loading assembly includes two loading rods 0222 coaxially disposed and respectively located at two sides of the loading sheath 021 and an electric push rod 05 disposed diagonally and abutted against the loading rods 0222, so that the electric push rod 05 is easier to control.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.
Claims (7)
1. The utility model provides a bearing friction torque detection device, includes actuating mechanism, loading mechanism and torque sensor, actuating mechanism includes driving motor and supplies the dabber that the bearing housing that awaits measuring established, the dabber is with the inner circle interference fit of the bearing that awaits measuring, its characterized in that: the driving mechanism further comprises an air main shaft, the driving motor, the torque sensor, the air main shaft and the mandrel are fixedly connected in sequence, the loading mechanism comprises a loading sleeve sleeved on the outer side of the bearing to be tested, a first loading assembly for applying axial load to the loading sleeve and a second loading assembly for applying radial load to the loading sleeve, the loading sleeve is in interference fit with the outer ring of the bearing to be tested, the first loading assembly comprises a first balancing weight and a loading rod, one end of the loading rod is fixedly connected with the loading sleeve, the axis of the loading rod is perpendicular to that of the bearing to be tested, the first balancing weight is connected with the loading rod through a first thin rope, the first loading assembly further comprises a guide assembly for changing the tension direction of the first thin rope acting on the loading rod, the second loading assembly comprises an extension rod and a second balancing weight, the extension rod is coaxially arranged with the bearing to be tested and is fixedly connected with the loading sleeve, the second balancing weight is arranged at one end, far away from the loading sleeve, of the extension bar.
2. The device for detecting the friction torque of the bearing as claimed in claim 1, wherein the number of the loading rods is two, the two loading rods are coaxially arranged and are respectively arranged at two sides of the loading sleeve, the number of the guide assemblies is one pair or two pairs, and each pair of the guide assemblies is diagonally arranged.
3. A bearing friction torque detecting device according to claim 1 or 2, characterized in that: the guide assembly comprises a base and a polished rod, two ends of the polished rod penetrate through the base, one side, close to the first balancing weight, of the first thin rope is hung on the polished rod, a lantern ring is arranged at one end, far away from the first balancing weight, of the first thin rope, and an annular groove for the lantern ring to be sleeved is formed in the loading rod.
4. A bearing friction torque detecting device according to claim 3, characterized in that: one end of the first string far away from the loading rod is provided with a connecting block, and the connecting block is in threaded connection with the first balancing weight.
5. A bearing friction torque detection device according to claim 4, characterized in that: the spindle is provided with a stepped mounting groove for mounting a bearing to be tested, one side of the mounting groove, which is far away from the air spindle, is provided with a screwing nut, and a gasket is arranged between the mounting groove and the screwing nut.
6. A bearing friction torque detection device according to claim 5, characterized in that: the extension bar and the second loading block are fixed through threads.
7. The bearing friction torque detection device according to claim 6, characterized in that: the air main shaft is fixedly arranged on the main shaft seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003005.9A CN110823571B (en) | 2019-10-22 | 2019-10-22 | Bearing friction torque detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003005.9A CN110823571B (en) | 2019-10-22 | 2019-10-22 | Bearing friction torque detection device |
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| CN110823571A CN110823571A (en) | 2020-02-21 |
| CN110823571B true CN110823571B (en) | 2021-05-25 |
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| CN201911003005.9A Active CN110823571B (en) | 2019-10-22 | 2019-10-22 | Bearing friction torque detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111397898B (en) * | 2020-03-26 | 2021-06-11 | 武汉理工大学 | Bearing friction resistance moment detection device |
| CN113041750A (en) * | 2021-02-07 | 2021-06-29 | 机械工业第九设计研究院有限公司 | Automatic cleaning system for coated car body three-dimensional warehouse |
| CN113776833A (en) * | 2021-11-11 | 2021-12-10 | 山东海声音科教仪器有限公司 | Equipment for bearing test |
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| CN2762094Y (en) * | 2004-12-09 | 2006-03-01 | 洛阳轴研科技股份有限公司 | Automobile hub bearing bending fatigue testing machine |
| CN203275090U (en) * | 2013-04-10 | 2013-11-06 | 浙江工业大学 | Test device for testing bending resistance of air bearing |
| CN206573292U (en) * | 2017-02-28 | 2017-10-20 | 人本集团有限公司 | Radial loading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE414550B (en) * | 1975-05-09 | 1980-08-04 | Siemens Ag | DEVICE FOR TESTING AXLE BEARINGS IN A HOGVACUUM chamber |
| CN201497602U (en) * | 2009-09-14 | 2010-06-02 | 徐州工业职业技术学院 | Friction moment measurement device of bearing |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
| CN103398809A (en) * | 2013-08-01 | 2013-11-20 | 杭州轴承试验研究中心有限公司 | Friction torque tester of bearing of automobile hub |
| CN103968981A (en) * | 2014-04-14 | 2014-08-06 | 上海大学 | Testing device for high-speed miniature bearing dynamic friction torque |
| CN104568443B (en) * | 2015-01-27 | 2017-05-03 | 四川大学 | Space rolling bearing comprehensive performance experiment device |
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- 2019-10-22 CN CN201911003005.9A patent/CN110823571B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2762094Y (en) * | 2004-12-09 | 2006-03-01 | 洛阳轴研科技股份有限公司 | Automobile hub bearing bending fatigue testing machine |
| CN203275090U (en) * | 2013-04-10 | 2013-11-06 | 浙江工业大学 | Test device for testing bending resistance of air bearing |
| CN206573292U (en) * | 2017-02-28 | 2017-10-20 | 人本集团有限公司 | Radial loading device |
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Address after: 325000 515 Binhai 5th Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province Applicant after: C&U Co.,Ltd. Applicant after: SHANGHAI C&U GROUP Co.,Ltd. Address before: 325000 515 Binhai 5th Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province Applicant before: C & U Group Ltd. Applicant before: SHANGHAI C&U GROUP Co.,Ltd. |
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