CN105258835A - Method of measuring sliding bearing liquid film friction torque and device - Google Patents
Method of measuring sliding bearing liquid film friction torque and device Download PDFInfo
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- CN105258835A CN105258835A CN201510843208.4A CN201510843208A CN105258835A CN 105258835 A CN105258835 A CN 105258835A CN 201510843208 A CN201510843208 A CN 201510843208A CN 105258835 A CN105258835 A CN 105258835A
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Abstract
The invention provides a method of measuring sliding bearing liquid film friction torque and a device. A variable frequency motor drives a rotation shaft supported by a sliding bearing via a flexible coupler for generating rotation; a liquid film between a moving ring and a static ring of the sliding bearing generates friction torque blocking the rotation, and the friction torque drives a bearing sleeve to generate a trend relative to the rotation via the static ring of the sliding bearing; a threaded hole at the lower end of the bearing sleeve is provided with a threaded rod, an acting force is applied to the tail end of the threaded rod to prevent the bearing sleeve to generate relative rotation, and the size of the acting force is measured via a force sensor; and a dynamic data acquisition and analysis device calculates the sliding bearing liquid film friction torque according to the torque generated by the acting force. The friction torque of the sliding bearing liquid film under a different load and a different rotation speed can be measured. The testing device does not need to disassemble a test sleeve rotation shaft system and can carry out assembly, the occupied space is small, and an interface is reserved for synchronous measurement of other power feature parameters of the sliding bearing.
Description
Technical field
The invention provides a kind of method for the measurement of sliding bearing liquid film friction torque and device.
Background technology
Sliding bearing is the important fulcrum arrangement of large rotating machinery rotor part.The friction torque of sliding bearing liquid film characterizes the lubricating status between the dynamic and static mating surface of bearing.As excessive in this friction torque, heavy wear can be caused to the wearing layer of sliding bearing, not only can reduce the sensitivity of bearing, produce unnecessary nonfunctional loss, and directly can have influence on the life-span of bearing and the stability of a whole set of rotor part operation.Therefore, in the experimental study to sliding bearing dynamics, liquid film can be produced one of the parameter of friction torque as paper examines.
In the experimental study of current sliding bearing dynamics, special bearing friction torque measuring instrument is usually used to carry out for miniature, middle-size and small-size bearing.The usable range of these measuring instruments is limited is not suitable for large rotating machinery bearing, and owing to needing to carry out Simultaneous Monitoring to other dynamic parameters in the dynamics test of sliding bearing, this kind of instrument obviously can not meet this requirement.In the dynamics test platform of large-scale bearing, the moment of torsion of dynamic torque sensor to rotor part is usually used to monitor.This torque sensor comprises shaft type, flange form and tightens formula etc., is generally insertion type and connects, namely need to it can be used as a part for transmission shaft to use, be usually arranged on the shaft coupling position between drive motor and rotating shaft.This connected mode has higher requirement to the accuracy of alignment installed, and need reserve special space, thus limit its usable range when the design of testing table.
Summary of the invention
The object of the present invention is to provide a kind of method for the measurement of sliding bearing liquid film friction torque and device, effectively make up the deficiency of existing surveying instrument and method, the friction torque of different load, different rotating speeds properties of journal bearing lubricated liquid film is measured.
A technical scheme of the present invention is to provide a kind of device measured for sliding bearing liquid film friction torque, wherein:
Variable-frequency motor drives the rotating shaft supported by sliding bearing to produce rotation by flexible clutch;
Liquid film between the dynamic and static ring of sliding bearing produces the friction torque hindering and rotate, and this friction torque drives bearing holder (housing, cover) to produce the trend relatively rotated by the stationary ring of sliding bearing;
In the threaded hole of bearing holder (housing, cover) lower end, be equipped with threaded rod, be applied with at threaded rod end and stop bearing holder (housing, cover) the acting force relatively rotated to occur, by the size of this acting force of force sensor measuring;
Dynamic Data Acquiring, analyser calculate the friction torque of sliding bearing liquid film according to the moment that this acting force produces, and obtain friction torque for: the acting force measured by force snesor and threaded rod end are to the product of the spacing of bearing center.
Preferably, loading system is connected with the pulley be positioned at above bearing holder (housing, cover);
Around the two ends of the cable wire on pulley, correspondence is connected to the globular hinge of two connecting link ends, provides pulling force to measurement mechanism; Described connecting link lays respectively at the relative position of the bearing holder (housing, cover) left and right sides;
Described loading system by pulley, cable wire and connecting link for sliding bearing provides radial load.
Preferably, by arranging speed probe, the rotating speed of countershaft is monitored;
By described Dynamic Data Acquiring, analyser, real time record and analysis are carried out to liquid film friction torque and rotating shaft rotary speed data.
Preferably, on described bearing holder (housing, cover), distribution be provided with multiple for sliding bearing kinetic parameter measure and load loading passage and interface.
Preferably, rotating shaft place before and after sliding bearing is axial, is respectively arranged with driving side thrust bearing and non-drive side thrust bearing, for providing radial and axial support for a whole set of rotor-bearing system.
Another technical scheme of the present invention is to provide a kind of method measured for sliding bearing liquid film friction torque, wherein:
Variable-frequency motor drives the rotating shaft supported by sliding bearing to produce rotation by flexible clutch;
Liquid film between the dynamic and static ring of sliding bearing produces the friction torque hindering and rotate, and this friction torque drives bearing holder (housing, cover) to produce the trend relatively rotated by the stationary ring of sliding bearing;
In the threaded hole of bearing holder (housing, cover) lower end, be equipped with threaded rod, be applied with at threaded rod end and stop bearing holder (housing, cover) the acting force relatively rotated to occur, by the size of this acting force of force sensor measuring;
Dynamic Data Acquiring, analyser calculate the friction torque of sliding bearing liquid film according to the moment that this acting force produces, and obtain friction torque for: the acting force measured by force snesor and threaded rod end are to the product of the spacing of bearing center;
Monitored by the rotating speed of speed probe countershaft; By described Dynamic Data Acquiring, analyser, real time record and analysis are carried out to liquid film friction torque and rotating shaft rotary speed data;
Regulated the rotating speed of rotating shaft by variable-frequency motor, realize the measurement to different rotating speeds properties of journal bearing lubricated liquid film friction torque.
Preferably, loading system is connected with the pulley be positioned at above bearing holder (housing, cover);
Around the two ends of the cable wire on pulley, correspondence is connected to the globular hinge of two connecting link ends, provides pulling force to measurement mechanism; Described connecting link lays respectively at the relative position of the bearing holder (housing, cover) left and right sides;
Described loading system provides radial load by pulley, cable wire and connecting link for sliding bearing, and the friction torque of sliding bearing liquid film is carried by threaded rod completely;
By the adjustment of loading system, realize the measurement of different radial load properties of journal bearing lubricated liquid film friction torque.
Sliding bearing liquid film measurement of friction torque device of the present invention, effectively compensate for the deficiency of existing surveying instrument and method, can measure the friction torque of different load, different rotating speeds properties of journal bearing lubricated liquid film.This proving installation just can assemble without the need to being split by test cover rotating shaft system, takes up room little.Installation method is simple and easy, convenient, does not have too high technical requirement.This kind of measurement mechanism is also for the synchro measure of other dynamic parameters of sliding bearing has reserved interface, and technician can carry out loading and testing as required.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device for the measurement of sliding bearing liquid film friction torque of the present invention;
Fig. 2 be in Fig. 1 A-A to schematic cross-section.
Embodiment
The invention provides the method and device measured for sliding bearing liquid film friction torque.This measurement mechanism mainly comprises: drive system, flexible clutch, measured bearing and bearing holder (housing, cover), cable wire, pulley, load charger, rotating speed, torque-measuring apparatus, data acquisition, analytic system and other servicing units.
As shown in Figure 1 and Figure 2, main operational principle of the present invention is as described below:
Variable-frequency motor 1 is produced by the rotating shaft 3 that flexible clutch 2 drives sliding bearing 17 to support and rotates.Now, the liquid film between sliding bearing 17 dynamic and static ring can produce the friction torque hindering and rotate, and this moment of torsion can drive bearing holder (housing, cover) 5 to produce the trend rotated by the stationary ring of sliding bearing 17.Threaded rod 11 being assemblied in the threaded hole of bearing holder (housing, cover) 5 lower end, by applying acting force at threaded rod 11 end, can stoping bearing holder (housing, cover) 5 that relative rotation occurs.According to the principle of equalising torque, the moment that this acting force produces is equal with the friction torque of sliding bearing liquid film.Utilize force snesor 12 can accurately measure the size of this acting force, then the friction torque of tested sliding bearing liquid film is for: the acting force measured by force snesor 12 and threaded rod 11 end are to the product of bearing center spacing.Utilize Dynamic Data Acquiring, analyser 16 can carry out real time record and analysis to parameters such as the friction torque of sliding bearing liquid film and rotating speeds.
This proving installation, by the adjustment of variable-frequency motor 1, loading system 6, realizes the measurement of different rotating speeds, different radial load properties of journal bearing lubricated liquid film friction torque.
Wherein, variable-frequency motor 1, for regulating the rotating speed of rotating shaft 3, realizes the measurement to different rotating speeds properties of journal bearing lubricated liquid film friction torque; Use flexible clutch 2 can ensure that motor is from radial and axial load; Driving side thrust bearing 4 and non-drive side thrust bearing 10(lay respectively at rotating shaft 3 place of the axial front and back of sliding bearing 17), for providing radial and axial support for a whole set of rotor-bearing system; Loading system 6 for transverse bearing 17 provides radial load, thus realizes the measurement of different loads lower bearing oil drag moment of torsion by pulley 7, cable wire 8 and connecting link 9; The end of connecting link 9 is globular hinge, and cable wire 8 only can provide pulling force to bearing measuring system, this kind of design coordinates pulley 7 that loading system 6 pairs of measured bearings can be made only to have radial load, the effect not having moment of torsion produces, the friction torque of sliding bearing 17 liquid film is carried by threaded rod 11 completely, thus ensure that friction torque measures the accuracy of numerical value.Bearing 13 is for providing fixed support for force snesor 12; Base 14 is for ensureing the stability of a whole set of test macro; Speed probe 15 is monitored for the rotating speed of countershaft 3, to realize the investigation to relation between sliding bearing liquid film friction torque and rotating speed; Dynamic Data Acquiring, analyser 16 are for the real time record of liquid film friction torque and rotating shaft rotary speed data and analysis.This measurement mechanism be also reserved with multiple for other kinetic parameters of sliding bearing measure and load load passage and interface 18 so that this device follow-up test expand.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1., for the device that sliding bearing liquid film friction torque is measured, it is characterized in that,
Variable-frequency motor (1) drives the rotating shaft (3) supported by sliding bearing (17) to produce rotation by flexible clutch (2);
Liquid film between the dynamic and static ring of sliding bearing (17) produces the friction torque hindering and rotate, and this friction torque drives bearing holder (housing, cover) (5) to produce the trend relatively rotated by the stationary ring of sliding bearing (17);
In the threaded hole of bearing holder (housing, cover) (5) lower end, be equipped with threaded rod (11), be applied with at threaded rod (11) end and stop bearing holder (housing, cover) (5) that the acting force relatively rotated occurs, measured the size of this acting force by force snesor (12);
Dynamic Data Acquiring, analyser (16) calculate the friction torque of sliding bearing (17) liquid film according to the moment that this acting force produces, obtain friction torque for: the acting force measured by force snesor (12) and threaded rod (11) end are to the product of the spacing of bearing center.
2., as claimed in claim 1 for the device that sliding bearing liquid film friction torque is measured, it is characterized in that,
Loading system (6) is connected with the pulley (7) being positioned at bearing holder (housing, cover) (5) top;
Around the two ends of the cable wire (8) on pulley (7), correspondence is connected to the globular hinge of two connecting link (9) ends, provides pulling force to measurement mechanism; Described connecting link (9) lays respectively at the relative position of bearing holder (housing, cover) (5) left and right sides;
Described loading system (6) by pulley (7), cable wire (8) and connecting link (9) for sliding bearing (17) provides radial load.
3., as claimed in claim 1 for the device that sliding bearing liquid film friction torque is measured, it is characterized in that,
By arranging speed probe (15), the rotating speed of countershaft (3) is monitored;
By described Dynamic Data Acquiring, analyser (16), real time record and analysis are carried out to liquid film friction torque and rotating shaft rotary speed data.
4., as claimed in claim 1 for the device that sliding bearing liquid film friction torque is measured, it is characterized in that,
On described bearing holder (housing, cover) (5), distribution be provided with multiple for sliding bearing kinetic parameter measure and load loading passage and interface (18).
5., as claimed in claim 1 for the device that sliding bearing liquid film friction torque is measured, it is characterized in that,
Rotating shaft (3) place before and after sliding bearing (17) is axial, is respectively arranged with driving side thrust bearing (4) and non-drive side thrust bearing (10), for providing radial and axial support for a whole set of rotor-bearing system.
6., for the method that sliding bearing liquid film friction torque is measured, it is characterized in that,
Variable-frequency motor (1) drives the rotating shaft (3) supported by sliding bearing (17) to produce rotation by flexible clutch (2);
Liquid film between the dynamic and static ring of sliding bearing (17) produces the friction torque hindering and rotate, and this friction torque drives bearing holder (housing, cover) (5) to produce the trend relatively rotated by the stationary ring of sliding bearing (17);
In the threaded hole of bearing holder (housing, cover) (5) lower end, be equipped with threaded rod (11), be applied with at threaded rod (11) end and stop bearing holder (housing, cover) (5) that the acting force relatively rotated occurs, measured the size of this acting force by force snesor (12);
Dynamic Data Acquiring, analyser (16) calculate the friction torque of sliding bearing (17) liquid film according to the moment that this acting force produces, obtain friction torque for: the acting force measured by force snesor (12) and threaded rod (11) end are to the product of the spacing of bearing center;
Monitored by the rotating speed of speed probe (15) countershaft (3); By described Dynamic Data Acquiring, analyser (16), real time record and analysis are carried out to liquid film friction torque and rotating shaft rotary speed data;
Regulated the rotating speed of rotating shaft (3) by variable-frequency motor (1), realize the measurement to different rotating speeds properties of journal bearing lubricated liquid film friction torque.
7., as claimed in claim 6 for the method that sliding bearing liquid film friction torque is measured, it is characterized in that,
Loading system (6) is connected with the pulley (7) being positioned at bearing holder (housing, cover) (5) top;
Around the two ends of the cable wire (8) on pulley (7), correspondence is connected to the globular hinge of two connecting link (9) ends, provides pulling force to measurement mechanism; Described connecting link (9) lays respectively at the relative position of bearing holder (housing, cover) (5) left and right sides;
Described loading system (6) provides radial load by pulley (7), cable wire (8) and connecting link (9) for sliding bearing (17), and the friction torque of sliding bearing (17) liquid film is carried by threaded rod (11) completely;
By the adjustment of loading system (6), realize the measurement of different radial load properties of journal bearing lubricated liquid film friction torque.
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| CN201510843208.4A CN105258835B (en) | 2015-11-27 | 2015-11-27 | A kind of method and device measured for sliding bearing liquid film friction torque |
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| CN201510843208.4A CN105258835B (en) | 2015-11-27 | 2015-11-27 | A kind of method and device measured for sliding bearing liquid film friction torque |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969867A (en) * | 2017-05-12 | 2017-07-21 | 中国航天时代电子公司 | A kind of apparatus and method for measuring the maximum rolling static friction torque of rotor nacelle |
| CN115356025A (en) * | 2022-07-06 | 2022-11-18 | 宁波威孚天力增压技术股份有限公司 | System and method for testing friction power consumption of turbocharger |
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| JP2005069884A (en) * | 2003-08-25 | 2005-03-17 | Nsk Ltd | Dynamic torque measuring apparatus for ball bearing |
| CN1865878A (en) * | 2006-06-22 | 2006-11-22 | 慈兴集团有限公司 | Measuring for friction torque of bearing under micro-loading at different rotation rate and measuring apparatus therefor |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
| CN103439041A (en) * | 2013-09-03 | 2013-12-11 | 济钢集团有限公司 | Motor friction-torque automatic measurement device used for steel-belt production |
| CN105021338A (en) * | 2015-08-12 | 2015-11-04 | 天津大学 | Torque measurement apparatus and method for miniature tension-torsion fatigue testing machine |
| CN205175594U (en) * | 2015-11-27 | 2016-04-20 | 上海电气凯士比核电泵阀有限公司 | Be used for slide bearing liquid film friction torque measuring device |
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- 2015-11-27 CN CN201510843208.4A patent/CN105258835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069884A (en) * | 2003-08-25 | 2005-03-17 | Nsk Ltd | Dynamic torque measuring apparatus for ball bearing |
| CN1865878A (en) * | 2006-06-22 | 2006-11-22 | 慈兴集团有限公司 | Measuring for friction torque of bearing under micro-loading at different rotation rate and measuring apparatus therefor |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
| CN103439041A (en) * | 2013-09-03 | 2013-12-11 | 济钢集团有限公司 | Motor friction-torque automatic measurement device used for steel-belt production |
| CN105021338A (en) * | 2015-08-12 | 2015-11-04 | 天津大学 | Torque measurement apparatus and method for miniature tension-torsion fatigue testing machine |
| CN205175594U (en) * | 2015-11-27 | 2016-04-20 | 上海电气凯士比核电泵阀有限公司 | Be used for slide bearing liquid film friction torque measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969867A (en) * | 2017-05-12 | 2017-07-21 | 中国航天时代电子公司 | A kind of apparatus and method for measuring the maximum rolling static friction torque of rotor nacelle |
| CN106969867B (en) * | 2017-05-12 | 2019-09-13 | 中国航天时代电子公司 | A device and method for measuring maximum rolling static friction moment of rotor cabin |
| CN115356025A (en) * | 2022-07-06 | 2022-11-18 | 宁波威孚天力增压技术股份有限公司 | System and method for testing friction power consumption of turbocharger |
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