CN207396006U - The experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise - Google Patents
The experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise Download PDFInfo
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- CN207396006U CN207396006U CN201721504051.3U CN201721504051U CN207396006U CN 207396006 U CN207396006 U CN 207396006U CN 201721504051 U CN201721504051 U CN 201721504051U CN 207396006 U CN207396006 U CN 207396006U
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Abstract
The experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise, motor drive driven gear to rotate through transmission mechanism.Lower fixture is fixed on driven gear shaft successively and is pasted with sample under dish type.The left and right horizontal sliding box and the sliding slot of magnetic field pedestal for being built-in with magnet exciting coil are slidably matched；Two-dimensional movement structure is：It is screwed in the middle part of vertical movable block with vertical screw, vertical screw is connected with vertical motor shaft, and cross lead screw activity is erected on two cant boards of vertical movable block, is screwed on transverse shifting block, is connected with cross motor axis；Two-dimensional strain formula force snesor and vibration absorber are connected firmly successively below transverse shifting block, the first upper fixture and the second upper fixture are sequentially connected under the damping block of vibration absorber, and sample is fixed on the second upper fixture inner cavity in spherical shape, and eccentric with sample under underlying dish type.The present apparatus has a horizontal magnetic field more steady, evenly, frictional interface vibration, the features such as measure of noise is more accurate.
Description
Technical field
The utility model belongs to tribological test device, and in particular to a kind of research level direction magnetic field shakes to frictional interface
The experimental rig that moving noise influences.
Background technology
With industrial fast-developing and social demand increasingly promotion, people shake to unstable in production and living
Dynamic and noise problem is increasingly paid attention to.System generate unstable vibration not only can acceleration system parts wear out failure, contracting
The active time of short system can also influence the working performance of system, bring security risk；Noise can influence the production and living of people
Environment has great harm to the physical and mental health of people.And in friction duty, it is easy to the vibration of frictional interface be caused to be made an uproar
Sound.It can be seen that the mechanism of production of research frictional interface vibration noise, and vibration noise is avoided accordingly, controlled or is cut
It is weak, there is very big benefit to industrial production and social life.
Magnetic field constantly attracts the concern of people due to its unique magnetic function, and the friction means of many engineering goods are such as
Magnetic liner plate of ball mill, motor brush, magnetization cutting cutter etc. are all applied under various magnetic environments, and it is unique to play them
Magnetic property.It is also possible to evoke the unstable vibration of frictional interface and make an uproar for these friction means being under various magnetic environments
Sound.Friction means may be magnetized in view of magnetic environment, while can friction means be generated with macroscopical magnetic force, friction portion
Vibration noise characteristic of the part under magnetic environment is possible to different from the vibration noise characteristic not under magnetic environment.Although under magnetic environment
Friction means there has been the application of certain amount and species, but under magnetic environment the vibration noise characteristic of each friction means or
The research of influence of the person magnetic field to friction means vibration noise is rarely reported.Therefore, a kind of research magnetic field is designed to frictional interface
The experimental rig that vibration noise influences, and propose its test method, help to disclose shadow of the magnetic field to friction means vibration noise
Mechanism is rung, technology is provided to the demand for avoiding, controlling or weakening of unstable vibration noise in industrial production and social life
Foundation.
Utility model content
The purpose of this utility model is the blank for the research for influencing vibration noise on magnetic environment for current domestic and foreign scholars,
A kind of horizontal magnetic field more steady, evenly and addition is efficient is provided, frictional interface vibration, the measure of noise more accurately studies
The experimental rig that horizontal direction magnetic field influences frictional interface vibration noise.
What the purpose of this utility model was realized in：
The experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise, driving motor are mounted on bottom
The plate left side, the driving gear on driving motor axis engages through tooth band with the driven gear on driven gear shaft, and work is put down
Platform is arranged on through more root posts above bottom plate, and driven gear shaft is rotatably arranged on the right of bottom plate, and driven gear shaft is under
It is pierced by upwards from the perforate in the middle part of workbench, lower fixture, lower fixture top surface is fixed with through bolt on driven gear shaft top surface
On be pasted with sample under dish type, magnetic field pedestal is made of four cant boards enclosings all around, and magnetic field pedestal is connected using four L-types
Fitting is fixed on through bolt on workbench, left and right two horizontal sliding boxes respectively with the guide groove on the forward and backward cant board of magnetic field pedestal
It is slidably matched, two magnet exciting coils in left and right are separately mounted in the two horizontal sliding boxes in left and right；
Two-dimensional movement structure is：Vertical motor is mounted in top board undersurface, and vertical motor shaft is fixedly connected with vertical screw,
Crossbeam is fixed on testing machine, and left and right vertical guide rail is fixed on crossbeam bottom surface, and left and right vertical guide rail activity insertion is vertical
In two guide grooves on movable block, vertical movable block is made of a transverse slat and left and right side riser integration, with hanging down in the middle part of transverse slat
It is connected to screw spiral, cross lead screw is actively erected on the left and right cant board of vertical movable block, and is consolidated with cross motor axis
Fixed connection, cross lead screw are connected with transverse shifting block internal helicoid；
Transverse shifting block lower part connects firmly Two-dimensional strain formula force snesor and vibration damping frame successively, damping block and vibration damping frame it
Between be provided with multiple shock-absorbing springs, be fixedly connected with the first upper fixture through bolt below damping block, the be screwed with below the first upper fixture
Two upper fixtures, sample is mounted in the cavity of the second upper fixture in spherical shape, and under spherical upper sample and the dish type that is disposed below
Sample forms eccentric position, and three dimension acceleration sensor is mounted in the first upper fixture.
Also there is control panel；Described two magnet exciting coils in left and right are respectively through conducting wire stable connection power supply, and by control panel pair
Electric current is adjusted, and forms the application magnetic field structure of a horizontal magnetic field that can provide different size and direction；The vibration damping bullet
Spring is leaf spring, and at least two leaf springs, one the first from left is connected laterally at rightly between vibration damping frame and damping block.
Also there is sound transducer, sound transducer induction end is located near the frictional interface of upper and lower sample.
The sound transducer sensitivity is 50mV/g, and frequency response is 3.5Hz~20kHz, dynamic range for 15~
146dB；The Two-dimensional strain formula Force sensor measuring scope is 5~500N, precision 0.025N；The three-dimensional acceleration
Transducer range is ± 50g, and sensitivity 100mV/g, frequency response is 0.5Hz~5kHz.
Also there is data acquisition control system and signal sampler；The Two-dimensional strain formula force snesor and data acquisition
Control system connects；The three dimension acceleration sensor is connected with sound transducer by signal wire with signal sampler, shape
Into frictional interface vibration noise measuring system.
The present apparatus be intended to can systematically influence of the research level direction magnetic field to frictional interface vibration noise, be magnetic environment
The controllability of lower friction means vibration noise provides theory support.The experimental rig can more accurately simulate all kinds of in industrial production
The fricting movement of friction means under magnetic environment can easily test the vibration noise characteristic of frictional interface under magnetic environment, can be complete
Tribological test result and vibration noise result of the test are provided to face.And during testing, addition magnetic field process is via control
Plate operates, and is not in because manual operation causes the situation of magnetic field addition not in time, is also avoided that in the adding procedure of magnetic field because by mistake
It contacts friction means and influences the acquisition of vibration signal.
Compared with prior art, the beneficial effects of the utility model are：
First, magnetic part is added, provides magnetic field, truly simulates rubbing for the friction means that work under magnetic environment
Wipe movement.
2nd, the three dimension acceleration sensor in upper fixture and induction end can close to the sound transducer of frictional interface
It is vibrated caused by measure frictional interface exactly with the characteristic of noise to study shadow of the magnetic environment to frictional interface vibration noise
It rings.
3rd, since magnetic field module is in place before the test, need not artificially be moved during experiment, thus avoid it is artificial because
Plain (vibration or sound as caused by unintentionally encountering test parts) interference caused by vibration and sound signal collecting.
4th, since magnetic field environment can almost moment provides by control panel, the addition efficiency in magnetic field, which is compared, artificially to be slipped into
Mode it is more efficient.
5th, since magnetic part uses the design (including the two horizontal sliding boxes in left and right and magnet exciting coil) of symmetry,
More steady, uniform magnetic field are provided at frictional interface position.
In short, the experimental rig can easily carry out the friction test under magnetic environment, the stable magnetic field provided,
It is even, vibration and the voice signal of frictional interface can be measured, obtains the related data of frictional interface rattle characteristic, to study magnetic
Influence of the environment to frictional interface vibration noise provides foundation, and experimental data is accurately and reliably, favorable repeatability.
Above-mentioned sound transducer sensitivity is 50mV/g, and frequency response is 3.5Hz~20kHz, dynamic range for 15~
146dB；Above-mentioned Two-dimensional strain formula Force sensor measuring scope is 5~500N, precision 0.025N；Above-mentioned three-dimensional acceleration
Transducer range is ± 50g, and sensitivity 100mV/g, frequency response is 0.5Hz~5kHz.
It ensure that the data area that this experimental rig can measure is wider, the data of measurement are more accurate.
The conducting wire of above-mentioned magnet exciting coil is connected to stabilized power source, and electric current is adjusted by control panel, forms one
The application magnetic field structure of the horizontal magnetic field in different size and direction can be provided.
Above-mentioned Two-dimensional strain formula force snesor is connected with data acquisition control system；Above-mentioned three dimension acceleration sensor
It is connected with sound transducer by signal wire with signal sampler, forms frictional interface vibration noise measuring system.
Description of the drawings
Fig. 1 is the dress for the experimental rig that the research level direction magnetic field of the utility model influences frictional interface vibration noise
Figure；
Fig. 2 is to be shaken with the experimental rig and method of the utility model to a specific secondary normal direction tested of friction
Dynamic acceleration strength-duration curve.
Test material is：Upper sample is the steel ball of Φ 10mm；Lower sample is the forged steel disk of 25 × 3mm of Φ.Friction test is joined
Number is：Load is 60N；Rotating speed is 60rev/min.Vibration and noise signal acquisition friction by-product give birth to continuous unstable vibration and
During noise, amount to 250s, wherein, add magnetic field in 180s or so.
Fig. 3 is the sound time frequency spectrum for the friction pair that Fig. 2 experiments measure in the process.
Fig. 4 is the coefficient of friction-time graph for the friction pair that Fig. 2 experiments measure in the process.
In figure：1- (multifunction friction wear) testing machine, 1A- testing machine top plates, 1B- experiment machine bottom boards, 2- two-dimensional movements
Structure, the vertical motors of 2A-, 2B- crossbeams (are fixed on testing machine 1), the vertical screws of 2C-, the vertical guide rails of 2D-, the vertical movements of 2E-
Block, 2F- cross lead screws, 2G- transverse shifting blocks, 2H- cross motors, 3- drive mechanisms, 3A- driving motors, 3B- tooth bands, 3C- works
Make platform, 3D- columns, 3E- driven gear shafts, 3F- driven gears, 4A- magnet exciting coils, the horizontal sliding boxes of 4B-, 4C- magnetic fields pedestal,
4D-L type connectors, 5- Two-dimensional strain formula force snesors, 6A- vibration damping frames, 6B- damping blocks, 6C- shock-absorbing springs, 7- is three-dimensional to be added
Velocity sensor, the first upper fixtures of 8A-, the second upper fixtures of 8B-, the upper samples of 9-, sample under 10-, fixture under 11-.
Specific embodiment
Embodiment
Fig. 1 shows the experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise, driving motor
Driving gears of the 3A on the bottom plate 1B left sides, driving motor axis is driven on driven gear shaft 3E with being mounted on 3B through tooth
Gear 3F is engaged, and workbench 3C is arranged on through more root post 3D above bottom plate 1B, and driven gear shaft 3E is rotatably arranged in
On the right of bottom plate 1B, and driven gear shaft 3E is pierced by from the perforate in the middle part of workbench 3C from bottom to top, driven gear shaft 3E tops
Lower fixture 11 is fixed with through bolt on face, sample 10 under dish type are pasted on lower 11 top surface of fixture, magnetic field pedestal 4C is by a front and rear left side
Right four cant boards and a top plate composition, magnetic field pedestal 4C are fixed on workbench using four L-type connector 4D through bolt
On 3C, the two horizontal sliding box 4B in left and right are slidably matched with the guide groove on the pedestal 4C top plates of magnetic field, 4A points of the magnet exciting coil in left and right two
It An Zhuan not control in two horizontal sliding box 4B.
Two-dimensional movement structure 2 is：Vertical motor 2A is mounted on top plate 1A bottom surfaces, vertical motor 2A axis and vertical screw 2C
It is fixedly connected, crossbeam 2B is fixed on testing machine 1, and left and right vertical guide rail 2D is fixed on crossbeam 2B bottom surfaces, and left and right vertical
Guide rail activity is inserted into two guide grooves on vertical movable block 2E, and vertical movable block 2E is by a transverse slat and left and right side riser one
Change and form, be connected in the middle part of transverse slat with vertical screw 2C spirals, cross lead screw 2F is actively erected at a left side of vertical movable block 2E
It on the riser of right side, and is fixedly connected with cross motor 2H axis, cross lead screw 2F is connected with transverse shifting block 2G internal helicoids.
Transverse shifting block 2G lower parts connect firmly Two-dimensional strain formula force snesor 5 and vibration damping frame 6A successively, and damping block 6B is with subtracting
It shakes and multiple shock-absorbing spring 6C is provided between frame 6A, the first upper fixture 8A is fixedly connected with through bolt below damping block 6B, on first
The second upper fixture 8B is screwed with below fixture 8A, sample 9 is in the cavity of the second upper fixture 8B in spherical shape, and is tried in spherical shape
Sample 9 forms eccentric position with sample 10 under the dish type being disposed below, and three dimension acceleration sensor 7 is mounted on the first upper fixture 8A
On.
The two-dimensional movement structure 2 of installation below the top plate 1A of multifunction friction wear testing machine 1, under two-dimensional movement structure 2
Side is sequentially installed with Two-dimensional strain formula force snesor 5, damping device (including vibration damping frame 6A, damping block 6B and shock-absorbing spring
6C), described two magnet exciting coil 4A in left and right are respectively adjusted electric current through conducting wire stable connection power supply, and by control panel, group
The application magnetic field structure for the horizontal magnetic field that can provide different size and direction into one；The shock-absorbing spring be leaf spring, at least two
It is connected laterally at vibration damping a one the first from left of leaf spring right (4 leaf springs, each two panels in left and right can be used, which is set above and below as schemed)
Between frame and damping block.It is mounted below damping block 6B to clamp the first upper fixture 8A of upper sample 9, second by bolt
Upper fixture 8B and the three dimension acceleration sensor 7 on the first upper fixture 8A；The bottom of multifunction friction wear testing machine 1
Drive mechanism 3 is installed on plate 1B, workbench 3C be up sequentially equipped with two magnetic field pedestal 4C, left and right horizontal sliding box 4B and
The magnet exciting coil 4A of left and right two being respectively placed in the two horizontal sliding boxes in left and right；Driven gear shaft 3E tops are up sequentially equipped with
Lower fixture 11 and lower sample 10.
Upper sample 9 is in the cavity of the second upper fixture 8B, and then the second upper fixture is screwed on simultaneously with the first upper fixture 8A
It is fixed.
Workbench 3C is fixed on by more root post 3D on the pedestal of workbench 3C, and driving motor 3A passes through tooth band 3B
Driven gear 3F is driven to rotate, driven gear shaft 3E actively passes through the circular hole at workbench 3C centers upwards.
Magnetic field pedestal 4C is fixed by four L-type connector 4D and workbench 3C using bolt, and left and right two is horizontal sliding
Box 4B is slidably matched with the guide groove at the top of the pedestal 4C of magnetic field, and it is horizontal sliding that the two magnet exciting coil 4A in left and right are separately mounted to left and right two
In box 4B.
Lower fixture 11 is mounted on through bolt on driven gear shaft 3E, and lower sample 10 is pasted onto on lower fixture 11.
Also there is sound transducer, induction end is located near the frictional interface of upper and lower sample.
Sound transducer sensitivity in this example is 50mV/g, and frequency response is 3.5Hz~20kHz, dynamic range for 15~
146dB；5 measurement range of Two-dimensional strain formula force snesor is 5~500N, precision 0.025N；7 range of three dimension acceleration sensor
For ± 50g, sensitivity 100mV/g, frequency response is 0.5Hz~5kHz.
The conducting wire of magnet exciting coil 4A in this example is connected to stabilized power source, and electric current is adjusted by control panel, composition
The application magnetic field structure of one horizontal magnetic field that different size and direction can be provided.
Two-dimensional strain formula force snesor 5 in this example is connected with data acquisition control system；Three dimension acceleration sensor 7 with
Sound transducer is connected by signal wire with signal sampler, forms frictional interface vibration noise measuring system.
The test method influenced using the experimental rig progress research level magnetic field of this example on frictional interface vibration noise,
Way is：
A, the installation of sample
By sample in spherical shape 9 in the cavity of the second upper fixture 8B, then the second upper fixture 8B with being pressed from both sides on first
Tool 8A spirals are accessed and fixed；Sample under dish type 10 is fastened with glue on lower fixture 11；
B, friction test
Moving up and down for two-dimensional movement structure 2 is controlled by data acquisition control system so that upper sample 9 and lower examination
Sample 10 carries out eccentric contact and applies the load F of settingz, while the lower fixture 11 of data acquisition control system control and its clamping
Lower sample 10 is rotated with the rotating speed of setting relative to upper sample 9, in whole process, data acquisition control system dynamic acquisition two dimension
The data of strain force sensor simultaneously adjust two-dimensional movement structure 2 accordingly so that load FzDynamic stability is kept, is carried with realizing
The fixed friction test of lotus, rotating speed；
C, the addition of horizontal magnetic field
Before on-test, first magnetic field pedestal 4C is fixed on by four L-type connector 4D on workbench 3C, it will
The two horizontal sliding box 4B in left and right load onto magnet exciting coil 4A in advance, are slid horizontally into through prolonging guide groove at the top of the pedestal 4C of magnetic field from both sides, lead to
Two positioning bolts crossed at the top of the pedestal 4C of magnetic field fix its position, keep magnet exciting coil 4A with rubbing the distance between pair no
Become；When needing magnetic field, the electric current in control panel control magnet exciting coil 4A changes or is kept fixed on request, when magnetic field is not required
When, control panel control magnet exciting coil 4A no currents pass through；Entire magnetic field applies process and friction test independence, therefore can be in office
Apply at the time of meaning needs and remove magnetic field；
D, the acquisition of tribological test data
While above-mentioned b step ball-disc spins are carried out to friction test, Two-dimensional strain formula force snesor 5 measures friction
Direction and the power F of loading directionx、Fz, and the data such as rotary speed fraction time are returned to data acquisition control system, then lead to
It crosses data acquisition control system analysis data and draws tribological test result；
E, the acquisition of vibration and noise signals data
While above-mentioned b step ball-disc spins are carried out to mill experiment, the sample frequency and three of signal sampler is adjusted
Dimension acceleration transducer 7 and sound transducer are matched, and the vibration acceleration that frictional interface is obtained by signal sampler is believed
Number and voice signal, then the signal to collecting analyzes, and draws the vibration noise characterization result of frictional interface.
The tribology experiments result that the example method is drawn in d steps with data acquisition control system analysis has：Normal load
Force-time curve, friction force-time curve and coefficient of friction-time graph.
The signal that the example method is gathered in e steps with signal sampler is analyzed, the frictional interface vibration noise characteristic drawn
Result of the test have：Three directions (normal direction, tangentially and radially) vibration acceleration strength-duration curve, sound time frequency spectrum,
Three direction vibration acceleration auto-power spectrums and sound auto-power spectrum.
With reference to d step and e walk data, can by influence of the magnetic environment to frictional interface tribological property with magnetic environment to rubbing
The influence for wiping interface vibration noise is combined, and the influence to tribological property is as ancillary test as a result, disclosing magnetic environment to rubbing
The influence of interface vibration noise characteristic is wiped, to which vibration noise in industrial production and social life is avoided, controls or weakened
Demand provide technical basis.
The result once specifically tested carried out using the experimental rig and its test method of more than this example is as follows：
Test material is：Upper sample is the steel ball of Φ 10mm；Lower sample is the forged steel disk of 25 × 3mm of Φ.Friction test is joined
Number is：Load is 60N；Rotating speed is 60rev/min.Vibration and noise signal acquisition friction by-product give birth to continuous unstable vibration and
During noise, amount to 250s, wherein, add magnetic field in 180s or so.
Fig. 2 is the vibration acceleration strength-duration curve of the secondary normal direction of friction.As can be seen that after 180s adds magnetic field,
Influence of the magnetic environment to the secondary vibration signal of friction is apparent, illustrates that magnetic field has a certain impact to vibration signal.
Fig. 3 is the secondary sound time frequency spectrum of friction.As can be seen that after 180s adds magnetic field, frequency in noise spectrum
The influence in magnetic field is received for the dominant frequency and its frequency multiplication of 2300Hz or so, its intensity of sound reduces after 180s.
Fig. 4 is the secondary coefficient of friction-time graph of friction.As can be seen that with the addition in magnetic field, rub secondary friction system
Number is also changed after 180s, this has also confirmed influence of the magnetic environment to frictional vibration and noise can be with secondary rub of rubbing
The influence for wiping performance is combined, and is affected after 180s because of the addition in magnetic field.It demonstrates simultaneously, combined magnetic field pair
The influence of frictional vibration noise and the influence of tribological property are analyzed jointly, help to disclose magnetic field to friction means vibration
The Influencing Mechanism of noise provides skill to the demand for avoiding, controlling or weakening of vibration noise in industrial production and social life
Art foundation.
Those of ordinary skill in the art can do in experimental rig and test method enlightenment according to disclosed in the utility model
Go out it is various do not depart from the deformation of other various specific devices of the utility model in essence and the combination of test method, these deformation and
Combination is still within the protection scope of the present utility model.
Claims (5)
1. the experimental rig that a kind of research level direction magnetic field influences frictional interface vibration noise, it is characterized in that, driving motor
The driving gear of (3A) on bottom plate (1B) left side, driving motor axis is through tooth band (3B) with being mounted on driven gear shaft (3E)
On driven gear (3F) engagement, workbench (3C) is arranged on through more root posts (3D) above bottom plate (1B), driven gear shaft
(3E) is rotatably arranged on the right of bottom plate (1B), and driven gear shaft (3E) opening in the middle part of workbench (3C) from bottom to top
It is pierced by hole, is fixed with lower fixture (11) through bolt on driven gear shaft (3E) top surface, disk is pasted on lower fixture (11) top surface
Sample (10) under shape, magnetic field pedestal (4C) are made of four cant board enclosings all around, and magnetic field pedestal (4C) uses four L-types
Connector (4D) is fixed on through bolt on workbench (3C), left and right two horizontal sliding boxes (4B) respectively with magnetic field pedestal (4C)
Guide groove on forward and backward cant board is slidably matched, and two magnet exciting coils (4A) are separately mounted in the horizontal sliding box (4B) in left and right two；
Two-dimensional movement structure (2) is：Vertical motor (2A) axis is fixedly connected with vertical screw (2C), left and right vertical guide rail (2D)
It is fixed on crossbeam (2B) bottom surface, and left and right vertical guide rail activity is inserted into two guide grooves on vertical movable block (2E), it is vertical
Movable block (2E) is made of a transverse slat and left and right side riser integration, is connected in the middle part of transverse slat with vertical screw (2C) spiral, horizontal
It is actively erected on the left and right cant board of vertical movable block (2E) to screw (2F), and fixes and join with cross motor (2H) axis
It connects, cross lead screw (2F) is connected with transverse shifting block (2G) internal helicoid；
Transverse shifting block (2G) lower part connects firmly Two-dimensional strain formula force snesor (5) and vibration damping frame (6A), damping block (6B) successively
Multiple shock-absorbing springs (6C) are provided between vibration damping frame (6A), damping block (6B) is fixedly connected with the first upper fixture through bolt below
(8A), the first upper fixture (8A) lower section are screwed with the second upper fixture (8B), and sample (9) is mounted on the second upper fixture (8B) in spherical shape
Cavity in, and sample (10) forms eccentric position under spherical upper sample (9) and the dish type that is disposed below, and three-dimensional acceleration passes
Sensor (7) is mounted in the first upper fixture (8A).
2. a kind of research level direction magnetic field according to claim 1 fills the experiment that frictional interface vibration noise influences
It puts, it is characterized in that, also with control panel；Described two magnet exciting coils (4A) in left and right respectively through conducting wire stable connection power supply, and by
Electric current is adjusted in control panel, forms the application magnetic field structure of a horizontal magnetic field that can provide different size and direction；Institute
Shock-absorbing spring is stated as leaf spring, at least two leaf springs, one the first from left is connected laterally at rightly between vibration damping frame and damping block.
3. the experiment that a kind of research level direction magnetic field according to claim 1 or 2 influences frictional interface vibration noise
Device, it is characterized in that, also with sound transducer, sound transducer induction end is located near the frictional interface of upper and lower sample.
4. a kind of research level direction magnetic field according to claim 3 fills the experiment that frictional interface vibration noise influences
Put, it is characterized in that, the sound transducer sensitivity is 50mV/g, and frequency response is 3.5Hz~20kHz, dynamic range for 15~
146dB；Described Two-dimensional strain formula force snesor (5) measurement range is 5~500N, precision 0.025N；The three-dimensional adds
Velocity sensor (7) range is ± 50g, and sensitivity 100mV/g, frequency response is 0.5Hz~5kHz.
5. a kind of research level direction magnetic field according to claim 4 fills the experiment that frictional interface vibration noise influences
It puts, it is characterized in that, also with data acquisition control system and signal sampler；The Two-dimensional strain formula force snesor (5) and
Data acquisition control system connects；The three dimension acceleration sensor (7) and sound transducer are adopted by signal wire and signal
Collect instrument connection, form frictional interface vibration noise measuring system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109030267A (en) * | 2018-09-07 | 2018-12-18 | 长沙学院 | A kind of friction test device and its test method |
| CN109655401A (en) * | 2019-01-04 | 2019-04-19 | 西安交通大学 | A kind of pressure changeable planar friction kinetic damping characteristic test device of metal material |
| CN109682462A (en) * | 2019-02-11 | 2019-04-26 | 西南交通大学 | It is a kind of for studying the experimental rig of elastomeric material frictional vibration noise |
| CN112747881A (en) * | 2020-12-29 | 2021-05-04 | 武汉理工大学 | Friction coupling vibration experiment table and measuring method thereof |
| CN112781814A (en) * | 2020-12-29 | 2021-05-11 | 武汉理工大学 | Two-degree-of-freedom friction coupling vibration experiment table |
| CN113310787A (en) * | 2021-07-08 | 2021-08-27 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN114659739A (en) * | 2022-03-21 | 2022-06-24 | 浙江大学 | Self-powered structure vibration monitoring device based on magnetic force and triboelectric effect |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030267A (en) * | 2018-09-07 | 2018-12-18 | 长沙学院 | A kind of friction test device and its test method |
| CN109030267B (en) * | 2018-09-07 | 2024-03-29 | 长沙学院 | Friction test device and test method thereof |
| CN109655401A (en) * | 2019-01-04 | 2019-04-19 | 西安交通大学 | A kind of pressure changeable planar friction kinetic damping characteristic test device of metal material |
| CN109682462A (en) * | 2019-02-11 | 2019-04-26 | 西南交通大学 | It is a kind of for studying the experimental rig of elastomeric material frictional vibration noise |
| CN109682462B (en) * | 2019-02-11 | 2023-12-12 | 西南交通大学 | Test device for researching friction vibration noise of elastomer material |
| CN112747881A (en) * | 2020-12-29 | 2021-05-04 | 武汉理工大学 | Friction coupling vibration experiment table and measuring method thereof |
| CN112781814A (en) * | 2020-12-29 | 2021-05-11 | 武汉理工大学 | Two-degree-of-freedom friction coupling vibration experiment table |
| CN112781814B (en) * | 2020-12-29 | 2023-03-28 | 武汉理工大学 | Two-degree-of-freedom friction coupling vibration experiment table |
| CN112747881B (en) * | 2020-12-29 | 2023-03-31 | 武汉理工大学 | Friction coupling vibration experiment table and measuring method thereof |
| CN113310787A (en) * | 2021-07-08 | 2021-08-27 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN113310787B (en) * | 2021-07-08 | 2022-11-01 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN114659739A (en) * | 2022-03-21 | 2022-06-24 | 浙江大学 | Self-powered structure vibration monitoring device based on magnetic force and triboelectric effect |
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