CN102735486A - Device for testing indicator characteristic of magnetorheological damper - Google Patents
Device for testing indicator characteristic of magnetorheological damper Download PDFInfo
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- CN102735486A CN102735486A CN2012102190459A CN201210219045A CN102735486A CN 102735486 A CN102735486 A CN 102735486A CN 2012102190459 A CN2012102190459 A CN 2012102190459A CN 201210219045 A CN201210219045 A CN 201210219045A CN 102735486 A CN102735486 A CN 102735486A
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Abstract
The invention discloses a device for testing the indicator characteristic of a magnetorheological damper. The device comprises a mechanical rack, a cam excitation unit, a magnetorheological damper power supply system and a sensor testing system. The testing device has a simple integral electromechanical structure, particularly a cam transmission mechanism is a combined integral flat-bottomed transmission mechanism, and compared with a rectangular frame structure in the traditional constant-breadth cam mechanism, the structure has the advantages that the device is convenient to assemble and disassemble and easy to process and manufacture; the cost of a variable frequency speed regulation system which is the common three-phase asynchronous motor is lower than that of a variable frequency speed regulation motor; and the device can test the indicator characteristic and speed characteristic of the magnetorheological damper, has stable and reliable working performance, and is simple and practical.
Description
Technical field
The present invention relates to a kind of dynamo-electric proving installation, relate in particular to a kind of MR damper and show the merit characteristic test device.
Background technology
MR damper is a kind of semi-active damper spare that adopts intelligent controlled fluid one magnetic flow liquid, and its damping force size is regulated and control by its drive current, is widely used in structural vibration reduction control fields such as automobile, bridge, building.Main contents of MR damper test are exactly that it shows the measurement of (claiming drag characteristic again) of merit characteristic, and promptly MR damper is under prescribed stroke and test frequency, and relative simple harmonic motion is done at two ends, and its resistance is with the variation characteristic of displacement.Show that the simple harmonic motion exciting mode in the merit feature measurement has electrodynamic type, electric-liquid type, mechanical cam/eccentric wheel type usually.Wherein mechanical cam/eccentric wheel exciting mode is than the above two, and simple in structure, easy mounting, cost are lower.On October 26th, 2011, disclosed Chinese invention patent CN101738329B disclosed a kind of eccentric wheel exciting agency (that is traditional equal width cam mechanism) that is used for the MR damper performance test, and the driving-chain that adopt frequency converter, motor and speed reduction unit, eccentric wheel, rectangular frame, constitutes with the sliding axle of rectangular frame one drives damper and does reciprocating linear motion.Eccentric wheel is a driving link, and rectangular frame is a driven member.Upper and lower two walls of the inside casing of rectangular frame contact with the eccentric wheel curved profile all the time, realize the linear reciprocating motion of both direction up and down, satisfy the damper characteristics test request.But the rectangular frame in this traditional equal width cam mechanism is the polyhedron of the whole box structure of hollow, the structure relative complex, and the higher and inconvenience relatively of processing and fabricating precision prescribed needs further improvement.Simultaneously, this patent does not explain that the motor of employing is frequency control motor or common threephase asynchronous machine.Other prior art of MR damper performance test often adopt frequency control motor to come driving cam, but the cost of frequency control motor is higher, and its price generally is 2～3 times with power ordinary three-phase synchronous price.
Summary of the invention
The technical matters that the present invention will solve provides a kind of MR damper and shows the merit characteristic test device; The simpler and more direct merit characteristic test system that effectively shows of the design one whole electromechanical structure of cover; Cam drive and the lower ordinary three-phase synchronous of cost that employing is easier than traditional equal width cam mechanism; That satisfies MR damper shows merit characteristic test demand, realizes not only simple and direct but also practical purpose.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of MR damper shows the merit characteristic test device, comprises mechanical stand, cam exciting unit, MR damper electric power system and sensor testing system.
Said mechanical stand is made up of base, framework and damper parts; Said framework comprises left back channel-section steel column, right back channel-section steel column, back web joint, crossbeam, preceding web joint, right front channel-section steel column, left front channel column; Four channel-section steel column lower ends perpendicular to base are welded on respectively on the base plate, and base plate is connected and fixed on the base through bolt; Back web joint is connected and fixed on the upper part of left back channel-section steel column, right back channel-section steel column through bolt, and preceding web joint is connected and fixed on the upper part of right front channel-section steel column, left front channel column through bolt; Crossbeam is connected and fixed between back web joint and the preceding web joint through screw; The damper parts comprise web member and stud bolt under MR damper, damper upper connector, the damper; Web member is connected with MR damper through straight pin respectively under damper upper connector, the damper, and stud bolt is connected between damper upper connector and the pull pressure sensor.
Said cam exciting unit is made up of frequency converter, ordinary three-phase synchronous, shaft coupling, camshaft, rolling bearing units, cam mechanism; Cam mechanism includes cam, cam upper plate, linear bearing, guiding polished rod, polished rod support member, coupling shaft, cam lower plate; Frequency converter links to each other with ordinary three-phase synchronous through cable; Shaft coupling one end connects the output shaft of ordinary three-phase synchronous, and the other end connects camshaft; Camshaft is supported by rolling bearing units, is connected transmission through key between camshaft and the cam; Cam upper end, lower end contact with cam upper plate, cam lower plate respectively, and cam upper plate, cam lower plate are connected to a flat gear train of combined integrate through coupling shaft, nut, spring washer; Linear bearing is screwed in the cam upper plate; Guiding polished rod one end is fixed in the polished rod support member, and the other end passes from the linear bearing endoporus.Be connected with bolt between the web member under cam upper plate and the damper.
Said MR damper electric power system includes D.C. regulated power supply, constant current source and alternating current-direct current amp gauge; D.C. regulated power supply connects constant current source through cable, for it provides WV; Constant current source connects MR damper through cable, is its power supply; The alternating current-direct current amp gauge is used to detect the electric current that is input to MR damper.
Said sensor testing system is made up of pull pressure sensor, displacement transducer, data collecting card, computing machine; Pull pressure sensor is fixed by bolts to crossbeam lower surface centre position, and displacement transducer is installed between crossbeam and the cam upper plate; One end of data collecting card connects pull pressure sensor and displacement transducer, and the other end is connected with computing machine.
The present invention compares with background technology, and the beneficial effect that has is: the MR damper of employing shows that the merit characteristic test device has succinct whole electromechanical structure, simple installation, and cost is lower, and is stable and reliable for performance, not only simple and direct but also practical.Wherein, the flat gear train of combined integrate that cam mechanism adopts cam upper plate, cam lower plate, coupling shaft to form, the rectangular frame structure in more traditional equal width cam mechanism, processing and fabricating is simpler, and installing/dismounting is more convenient, and structure is simpler and more direct nimble; Adopt ordinary three-phase synchronous to do power source, lower than the frequency control motor cost of the common employing of prior art.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the rectangular frame structure figure in the prior art equal width cam mechanism.
Fig. 2 is the vertical view that MR damper of the present invention shows the merit characteristic test device.
Fig. 3 is the cut-open view along A-A line among Fig. 2.
Fig. 4 is the cut-open view along B-B line among Fig. 2.
Fig. 5 is the Mechatronic Systems general illustration that MR damper of the present invention shows the merit characteristic test device.
Among the figure: base 1; Frequency converter 2; Threephase asynchronous machine 3; Shaft coupling 4; Camshaft 5; Rolling bearing units 6; Pull pressure sensor 7; Stud bolt 8; Damper upper connector 9; MR damper 10; Web member 11 under the damper; Displacement transducer 12; Cam 13; Left back channel-section steel column 14; Right back channel-section steel column 15; Back web joint 16; Crossbeam 17; Preceding web joint 18; Right front channel-section steel column 19; Left front channel column 20; Cam upper plate 21; Linear bearing 22; Guiding polished rod 23; Polished rod support member 24; Coupling shaft 25; Cam lower plate 26; Eccentric wheel 27; Sliding axle 28.
Embodiment
Shown in Figure 1 is the disclosed a kind of eccentric wheel exciting agency that can realize linear reciprocating motion of Chinese invention patent CN101738329B that front background technology part is mentioned, that is traditional equal width cam mechanism.Eccentric wheel 27 rotations drive driven member one sliding axle 28 and do reciprocating linear motion among Fig. 1, and upper and lower two walls of the rectangular frame inside casing on the sliding axle 28 contact tangent with the curved profile of eccentric wheel 27 all the time.Rectangular frame is the polyhedron of the box structure of hollow in this traditional equal width cam mechanism, structure relative complex, the higher and inconvenience relatively of the upper and lower two wall surface processing and fabricating precision prescribeies of the inside casing that contacts with the eccentric wheel profile.
Show the merit characteristic test device like Fig. 2, Fig. 3, Fig. 4, MR damper of the present invention shown in Figure 4; Comprise mechanical stand, cam exciting unit, MR damper electric power system and sensor testing system, also make improvement simultaneously to equal width cam mechanism, drive motor type selecting in the prior art.Wherein, said mechanical stand is made up of base 1, framework and damper parts.Said framework comprises left back channel-section steel column 14, right back channel-section steel column 15, back web joint 16, crossbeam 17, preceding web joint 18, right front channel-section steel column 19, left front channel column 20.Four channel- section steel columns 14,15,19,20 are perpendicular to base 1 and all be welded on respectively on the base plate, and base plate is fastened on the base 1 through bolt.Back web joint 16 is connected and fixed on the upper part of left back channel-section steel column 14, right back channel-section steel column 15 through bolt, and preceding web joint 18 is connected and fixed on the upper part of right front channel-section steel column 19, left front channel column 20 through bolt.Crossbeam 17 passes through screw retention between back web joint 16 and preceding web joint 18.The damper parts are made up of web member 11 and stud bolt 8 under MR damper 10, damper upper connector 9, the damper; MR damper 10 through straight pin respectively with damper upper connector 9, damper under web member 11 be connected, damper upper connector 9 connects pull pressure sensor 7 through stud bolt 8.Said cam exciting unit is made up of frequency converter 2, ordinary three-phase synchronous 3, shaft coupling 4, camshaft 5, rolling bearing units 6 and cam mechanism, and cam mechanism includes cam 13, cam upper plate 21, linear bearing 22, guiding polished rod 23, polished rod support member 24, coupling shaft 25, cam lower plate 26.Frequency converter 2 links to each other with ordinary three-phase synchronous 3 through cable.Shaft coupling 4 one ends connect the output shaft of ordinary three-phase synchronous 3, and the other end connects camshaft 5.Camshaft 5 is by rolling bearing units 6 supportings; Be connected transmission through key between camshaft 5 and the cam 13; Cam 13 upper ends, lower end contact with cam upper plate 21, cam lower plate 26 respectively; Cam upper plate 21, cam lower plate 26 are connected to a flat gear train of combined integrate through coupling shaft 25, nut, spring washer, and linear bearing 22 is screwed on cam upper plate 21, and web member 11 usefulness bolts are connected under cam upper plate 21 and the damper; Guiding polished rod 23 1 ends are fixed in polished rod support member 24, and the other end passes from linear bearing 22 endoporus.Said MR damper electric power system includes D.C. regulated power supply, constant current source and alternating current-direct current amp gauge; D.C. regulated power supply connects constant current source through cable; Constant current source connects MR damper through cable, and the alternating current-direct current amp gauge is used to detect the electric current that is input to MR damper.Said sensor testing system is made up of pull pressure sensor, displacement transducer, data collecting card, computing machine; Pull pressure sensor is fixed by bolts to crossbeam lower surface centre position; Displacement transducer is installed between crossbeam and the cam upper plate; One end of data collecting card connects pull pressure sensor, displacement transducer, and the other end is connected with computing machine.
The course of work of the present invention is following:
Frequency converter 2 drives ordinary three-phase synchronous 3 and rotates; Drive camshaft 5 through shaft coupling 4; Camshaft 5 connects 13 rotations of transmission driving cam through key; The flat gear train of combined integrate that cam 13 driving cam upper plates 21, cam lower plate 26 are formed does reciprocating linear motion; The piston rod that drives web member 11, MR damper 10 lower ends under the damper does reciprocating linear motion; The upper end of MR damper 10 is connected with crossbeam 17 through damper upper connector 9, stud bolt 8, pull pressure sensor 7 and is fixed as one, thereby realizes that MR damper shows the relative motion at the desired damper of merit characteristic test two ends, and can obtain desired simple harmonic motion through the contour curve shape of design cam 13.Meanwhile, the MR damper electric power system is started working: D.C. regulated power supply is connected to constant current source through cable, for constant current source provides WV; Constant current source connects MR damper through cable, is the MR damper power supply; The alternating current-direct current amp gauge is used to detect the electric current that is input to MR damper.When MR damper is in the normal test operation state; Pull pressure sensor in the sensor testing system, displacement transducer are measured the damping force and the relative displacement of damper two ends of MR damper respectively; Send into computing machine through data collecting card then; In computing machine, carry out corresponding data processing and computing, what finally obtain MR damper shows merit family curve and corresponding data.
Above-mentioned embodiment is used for the present invention that explains; Rather than limit the invention; Under the premise without departing from the spirit and scope of the present invention, the present invention also can have various changes and modifications, and these variations and improvement all drop within protection scope of the present invention.
Claims (3)
1. a MR damper shows the merit characteristic test device; The sensor testing system that includes mechanical stand, cam exciting unit, MR damper electric power system and be made up of pull pressure sensor (7), displacement transducer (12), data collecting card, computing machine is characterized in that:
1) said mechanical stand is made up of base (1), framework and damper parts; Said framework comprises left back channel-section steel column (14), right back channel-section steel column (15), back web joint (16), crossbeam (17), preceding web joint (18), right front channel-section steel column (19), left front channel column (20); Four channel-section steel columns (14,15,19,20) lower end perpendicular to base (1) is welded on respectively on the base plate, and base plate is connected and fixed on the base (1) through bolt; Back web joint (16) is connected and fixed on the upper part of left back channel-section steel column (14), right back channel-section steel column (15) through bolt, and preceding web joint (18) is connected and fixed on the upper part of right front channel-section steel column (19), left front channel column (20) through bolt; Crossbeam (17) is screwed between back web joint (16) and preceding web joint (18); The damper parts comprise web member (11) and stud bolt (8) under MR damper (10), damper upper connector (9), the damper; Web member (11) is connected with MR damper (10) through straight pin respectively under damper upper connector (9), the damper, and stud bolt (8) is connected between damper upper connector (9) and the pull pressure sensor (7);
2) said cam exciting unit is made up of frequency converter (2), ordinary three-phase synchronous (3), shaft coupling (4), camshaft (5), rolling bearing units (6), cam mechanism; Cam mechanism includes cam (13), cam upper plate (21), linear bearing (22), guiding polished rod (23), polished rod support member (24), coupling shaft (25), cam lower plate (26); Frequency converter (2) links to each other with ordinary three-phase synchronous (3) through cable; Shaft coupling (4) one ends connect the output shaft of ordinary three-phase synchronous (3), and the other end connects camshaft (5); Camshaft (5) is by rolling bearing units (6) supportings, is connected transmission through key between camshaft (5) and the cam (13); Cam (13) upper end, lower end contact with cam upper plate (21), cam lower plate (26) respectively, and cam upper plate (21), cam lower plate (26) are connected to a flat gear train of combined integrate through coupling shaft (25), nut, spring washer; Linear bearing (22) is screwed on cam upper plate (21); Guiding polished rod (23) one ends are fixed in polished rod support member (24), and the other end passes from linear bearing (22) endoporus.Be connected with bolt between the web member (11) under cam upper plate (21) and the damper.
2. MR damper according to claim 1 shows the merit characteristic test device, it is characterized in that, said MR damper electric power system includes D.C. regulated power supply, constant current source and alternating current-direct current amp gauge; D.C. regulated power supply connects constant current source through cable, for it provides control voltage; Constant current source connects MR damper (10) through cable, is its power supply; The alternating current-direct current amp gauge is used for detecting the electric current that is input to MR damper (10).
3. MR damper according to claim 1 shows the merit characteristic test device, it is characterized in that, the concrete model of the ordinary three-phase synchronous (3) in the said cam exciting unit is the Y132M-8 in the y series motor, also can adopt Y2 series threephase asynchronous machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219045.9A CN102735486B (en) | 2012-06-29 | 2012-06-29 | Device for testing indicator characteristic of magnetorheological damper |
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| CN201210219045.9A CN102735486B (en) | 2012-06-29 | 2012-06-29 | Device for testing indicator characteristic of magnetorheological damper |
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| CN102735486A true CN102735486A (en) | 2012-10-17 |
| CN102735486B CN102735486B (en) | 2014-10-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103217244A (en) * | 2013-03-26 | 2013-07-24 | 山东科技大学 | Shock absorber tension and pressure measuring instrument and detection method thereof |
| CN103616176A (en) * | 2013-12-12 | 2014-03-05 | 上海瑞纽机械装备制造有限公司 | Damper valve-closing performance testing platform and testing method thereof |
| CN103674530A (en) * | 2013-12-06 | 2014-03-26 | 上海应用技术学院 | Device for testing performance of magnetorheological fluid damper |
| CN107024381A (en) * | 2017-06-02 | 2017-08-08 | 西南交通大学 | A kind of sinusoidal displacement excitation loading device and test equipment |
| CN107101797A (en) * | 2017-06-01 | 2017-08-29 | 南京理工大学 | A kind of tubular experimental provision for measuring buffer shock resistance |
| CN107228760A (en) * | 2017-06-02 | 2017-10-03 | 西南交通大学 | A kind of vertical power performance test equipment of rail fastener resilient sleeper-bearing and control device |
| CN110377008A (en) * | 2019-07-24 | 2019-10-25 | 芜湖双翼航空装备科技有限公司 | A kind of test fixture of rudder servo controller |
| CN114486569A (en) * | 2022-04-14 | 2022-05-13 | 安徽农业大学 | High-temperature impact tensile mechanical test platform and method based on cam crank-link mechanism |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217244A (en) * | 2013-03-26 | 2013-07-24 | 山东科技大学 | Shock absorber tension and pressure measuring instrument and detection method thereof |
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| CN103674530A (en) * | 2013-12-06 | 2014-03-26 | 上海应用技术学院 | Device for testing performance of magnetorheological fluid damper |
| CN103616176A (en) * | 2013-12-12 | 2014-03-05 | 上海瑞纽机械装备制造有限公司 | Damper valve-closing performance testing platform and testing method thereof |
| CN103616176B (en) * | 2013-12-12 | 2016-03-09 | 上海瑞纽机械股份有限公司 | Damper valves closes performance test stand and test method thereof |
| CN107101797A (en) * | 2017-06-01 | 2017-08-29 | 南京理工大学 | A kind of tubular experimental provision for measuring buffer shock resistance |
| CN107101797B (en) * | 2017-06-01 | 2023-08-04 | 南京理工大学 | Cylindrical experimental device for measuring shock resistance of buffer |
| CN107024381A (en) * | 2017-06-02 | 2017-08-08 | 西南交通大学 | A kind of sinusoidal displacement excitation loading device and test equipment |
| CN107228760A (en) * | 2017-06-02 | 2017-10-03 | 西南交通大学 | A kind of vertical power performance test equipment of rail fastener resilient sleeper-bearing and control device |
| CN110377008A (en) * | 2019-07-24 | 2019-10-25 | 芜湖双翼航空装备科技有限公司 | A kind of test fixture of rudder servo controller |
| CN114486569A (en) * | 2022-04-14 | 2022-05-13 | 安徽农业大学 | High-temperature impact tensile mechanical test platform and method based on cam crank-link mechanism |
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