CN104931259A - Method for testing thermal-elastic coupled vibration characteristics in friction and sliding process of variable speed friction plate - Google Patents
Method for testing thermal-elastic coupled vibration characteristics in friction and sliding process of variable speed friction plate Download PDFInfo
- Publication number
- CN104931259A CN104931259A CN201510366815.6A CN201510366815A CN104931259A CN 104931259 A CN104931259 A CN 104931259A CN 201510366815 A CN201510366815 A CN 201510366815A CN 104931259 A CN104931259 A CN 104931259A
- Authority
- CN
- China
- Prior art keywords
- steel sheet
- pressing plate
- vibration
- friction
- acceleration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention belongs to the field of experimental simulation technologies, in particular to a method for testing thermal-elastic coupled vibration characteristics in a friction and sliding process of a variable speed friction plate. The method specifically comprises the steps of testing friction moment characteristics, rotational speed variation characteristics and thermosetting coupling characteristics in the friction and sliding process of a friction element, and then acquiring vibration characteristics. The method can provide theoretical support for the structural strength simulating calculation and optimization design of the friction element, obtains thermal-elastic coupled vibration characteristics of a friction pair during the combination/separation process through a special real-time data processing technology, can remove strong interference signals, can obtain the relation between the moment characteristics and rotational speed variation through accurate circular frequency vector and quadratic integral calculation, further synthesizes results of temperature field analysis and vibration vector spectral analysis, and can obtain the thermal-elastic coupled vibration characteristics. The experimental testing method provided by the invention is simple, practical, and high in precision of test results.
Description
Technical field
The invention belongs to experiment simulation technical field, be specifically related to a kind of speed change friction disc and rub and slip over journey Thermoelastic Vibration characteristic test method.
Background technology
Kinematic train is as the important component part of special vehicle, and its performance directly affects the maneuverability (as braking, by property, acceleration) of vehicle, reliability and serviceable life, and the inefficacy of kinematic train, cannot use directly causing special vehicle.
Clutch friction pair is one of important basic components of kinematic train.In Practical Project, during friction pair power transmission, often there is frictional heat in friction disc, and then produce thermal bending deformation, crackle and even to rupture equivalent damage.Be out of shape to probe into friction pair heat structure the vibration caused, and occur the reason of above-mentioned damage, this rubs and slips over axial, circumference in journey and coupled relation between radial vibration characteristic and temperature in coupled/separated to need to study friction pair.Obtain above characteristic parameter, friction pair must be carried out and to rub sliding process temperature and vibration characteristics experiment test.If and rubbed by friction pair and slip over the direct method of testing of journey vibration displacement, as on the surface of 405 friction pair pairing steel sheets, symmetry is pasted several micro-displacement sensors and is embedded into thermopair, not only be subject to testing equipment condition limit, such as install and measure in scope at limited sensor, accurately cannot find maximum temperature point position, and there will be the vibration signal that micrometric displacement vibration signal that thermoelastic deformation causes causes much smaller than experiment table system, as lubricating oil sprays, the signals such as electric rotating machine interference, if without alternate manner special processing, the vibration signal obtained can not reflect that friction pair that thermoelastic deformation causes rubs exactly and slip over journey Thermoelastic Vibration characteristic.Therefore, need a kind of other by certain measuring technology means to obtain friction pair in the Thermoelastic Vibration characteristic test method of testing slipped in journey of rubbing.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: how by a kind of special real time data processing means, obtain the experimental test procedures of the Thermoelastic Vibration characteristic of friction pair in coupled/separated process, for the Strength Simulation of friction element and Optimal Structure Designing provide theories integration, require that the program also can carry out moment of torsion in friction element coupled/separated process and measurement of rotating speed simultaneously.(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of speed change friction disc to rub and slip over journey Thermoelastic Vibration characteristic test method, the method is implemented based on clutch coupling experiment test platform, and this clutch coupling experiment test platform comprises: input end motor 1, axial pressure power end 2, terminal pad 3, groove pressing plate 4, cruciform anti-slop serrations 5, first pairing steel sheet 6, friction disc 7, second pairing steel sheet 8, outer hub 9, support casing 10, rotary drive input 11, rotary input motor 12, interior hub 13, thermopair 15 and acceleration transducer 16; Wherein, axial pressure power end 2 is provided with pressure transducer; Rotary drive input 11 is provided with speed probe;
The structure & working mechanism of this clutch coupling experiment test platform is as follows:
This clutch coupling experiment test platform power is input as two ends input mode: one end is for from left to right, power is entered by the input end motor 1 being in high order end, the start cylinder of input end motor 1 right-hand member and axial pressure power end 2 is rigidly connected, axial pressure power end 2 right-hand member and terminal pad 3 are bolted, and terminal pad 3 right-hand member and groove pressing plate 4 are rigidly connected by hexagon socket head cap screw, like this, terminal pad 3 and groove pressing plate 4 are under the effect of axial pressure power end 2, together along with axial pressure power end 2 carries out axial feed motion, and be end contact mode between groove pressing plate 4 right-hand member and the first pairing steel sheet 6, final dynamic action is on the end face of the first pairing steel sheet 6, first pairing steel sheet 6, friction disc 7 and the second pairing steel sheet 8 are end-face friction from left to right each other and contact mounting means, and be the state that is connected with a joggle by spline tooth between the second pairing steel sheet 8 external tooth and outer hub 9 internal tooth being placed in outside, for being rigidly connected between outer hub 9 right-hand member and support casing 10, other end power from right to left, power is entered by rotary input motor 12, the rotary drive input 11 of driven rotary input end motor 12 left end carries out high speed rotary motion, rotary drive input 11 high order end is rigidly connected by bolt and interior hub 13, support and connection are carried out with support casing 10 by bearing in the middle part of rotary drive input 11, and for spline tooth is connected with a joggle state between interior hub 13 external tooth and friction disc 7 internal tooth, like this, when rotary drive input 11 carries out High Rotation Speed, movable friction plate 7 will be with to be rotated together,
The method comprises the steps:
Step S1: in the combination of clutch coupling experiment test platform friction pair and detachment process, for preventing producing relative sliding between groove pressing plate 4 and the first pairing steel sheet 6, contact end face at groove pressing plate 4 and be machined to a few cross groove, and a cruciform anti-slop serrations 5 is installed in this cross groove, its teeth portion shape is identical with the first pairing steel sheet 6 external tooth form, and by rotating gravure pressing plate 4, make the internal tooth of itself and outer hub 9 be in engagement;
Step S2: adjustment axial pressure power end 2, after groove pressing plate 4 and the first pairing steel sheet 6 are compressed, retreats 0.8mm ~ 1.5mm;
Three acceleration transducers 16 and three thermopairs 15 are arranged on the outside of the first pairing steel sheet 6, on the face that namely the first pairing steel sheet 6 combines with groove pressing plate 4 by step S3: according to the actual conditions of friction pair in testing table work; Wherein, three thermopairs 15 are embedded on the first pairing steel sheet 6 by 120 ° of equally distributed three groups of blind holes in interval; The outside of the pre-buried position of thermopair 15 is the position of acceleration transducer 16, and namely thermopair 15 and acceleration transducer 16 are arranged on same position, to ensure that measured temperature and vibration acceleration value are for same position dot characteristics;
Step S4: the position contacting corresponding three acceleration transducers 16 on end face at groove pressing plate 4, respective machined grooves, three grooves are each other in 120 ° of distributions, to make in pressurization cohesive process, groove pressing plate 4 can be made to avoid acceleration transducer 16, avoid damaging sensor, the inner cavity size of groove is greater than the physical dimension of acceleration transducer;
Step S5: be connected to by the torque sensor that the pressure transducer of clutch coupling experiment test platform, speed probe and platform carry in controller and computing machine, is connected to thermopair 15 and acceleration transducer 16 in data collecting instrument and corresponding computing machine;
According to by the actual service condition of test specimen, experiment table is carried out respectively to the moment of torsion under different lubrication flow, different pressures, different rotating speeds coupled/separated operating mode, rotation speed change characteristic, temperature and vibration acceleration characteristic test;
Step S6: for the external interference signal of lubricating oil and motor, carrying out real time data processing to measuring the vibration acceleration signal obtained, converting effective vibration displacement signal to, and in conjunction with temperature signal, through Data Management Analysis, obtain Thermoelastic Vibration characteristic.
Wherein, described three acceleration transducers are three axial acceleration sensors, sensitivity 500mV/g, frequency response 1000Hz.
Wherein, the X positive dirction of described three acceleration transducers all points to axle center, and Y-direction is that circumference is tangential, and Z positive dirction points to pressing plate.
Wherein, described three groups of blind holes, often organize blind hole and comprise three blind holes, these three blind hole positions distribute along radial direction, thus three groups of each self-corresponding thermopairs of blind hole, each position is divided into the downward temperature field test of Different Diameter of external diameter, central diameter and internal diameter, three position totally 9 measuring points.
Wherein, the depth of groove of described groove pressing plate 4 is set to the height being greater than acceleration transducer.
Wherein, the blind hole depth on described first pairing steel sheet 6 is set to 2.8mm ~ 3.2mm.
Wherein, in described step S5, degree of will speed up signal converts vibration displacement data to, and obtains the method for vibration characteristics, comprises the steps:
Step S501: for the external interference signal of lubricating oil and motor, to the acceleration signal of test, Hamming window function is adopted to be weighted process, and for making signal amplitude versus frequency characte comparatively steady in high order of frequency section performance, reduce amplitude fluctuations as far as possible, adopt 400 rank lowpass digital filters to carry out filtering, this wave filter complex frequency RESPONSE CALCULATION is counted and is selected 1024, and sample frequency is 1000H; After filtering, valid data amplitude is greater than undesired signal;
Step S502: to filtered signal, carries out circular frequency vector sum quadratic integral and calculates, obtain vibration displacement signal, and adopt AR autoregressive model to carry out power spectrumanalysis, integrated temperature field analysis result, obtain Thermoelastic Vibration characteristic.
(3) beneficial effect
Compared with prior art, the present invention possesses following beneficial effect:
(1) provided by the invention by a kind of special real time data processing means, obtain the experimental test procedures of the Thermoelastic Vibration characteristic of friction pair in coupled/separated process, not only solve and be difficult to obtain friction pair and rub and slip over a difficult problem for micro-vibration signal in journey, but also in experimentation, pass through real time data processing, directly obtain micrometric displacement vibration time domain and frequency-region signal, and and then obtain vibration characteristics, improve the efficiency of experiment test.
(2) testing method provided by the invention is simple, practical, test result precision is high, by the result that the present invention obtains, can reflect comprehensive actuator speed change friction pair characteristic in actual use completely, and to rub the various performances (as intensity, thermal deformation damage etc.) slipped in journey for deeply probing into friction disc further, provide good method and use for reference.
Accompanying drawing explanation
Fig. 1 is the experiment table structural plan that technical solution of the present invention is set up.
Fig. 2 is Thermoelastic Vibration experimental results figure.
Embodiment
For making object of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Clutch friction pair is one of important basic components of kinematic train.In Practical Project, during friction pair power transmission, often there is frictional heat in friction pair, and and then produce high vibration, crackle and even to rupture equivalent damage.There is the reason of above-mentioned damage in order to probe into friction pair power transmission, needing research friction pair in the Thermoelastic Vibration feature slipped in journey of rubbing.Obtain above characteristic parameter, must corresponding experiment test be carried out.
According to the ultimate value that gearing requires the change of speed change friction pair coupled/separated hourly velocity, tachometer value is set as test maximal value, by the experimental bench device of design, at the power intake of experiment table, be just set as that fixed step size rises in value by test specimen rotating speed loaded value.The situation of change of the pressure in record loading procedure, rotating speed, moment of torsion, acceleration, temperature equivalence, and by these parameters input in the data processor finished, by computation and analysis, obtain Thermoelastic Vibration feature.
As shown in Figure 1, speed change friction disc provided by the present invention rubs and slips over journey Thermoelastic Vibration characteristic test method, for the Thermoelastic Vibration characteristic of friction pair in coupled/separated process, in the specific location of clutch coupling experiment test platform, high precision measurement instrument is installed, and realized by a kind of real time data processing means.The method is implemented based on clutch coupling experiment test platform, and this clutch coupling experiment test platform comprises: input end motor 1, axial pressure power end 2, terminal pad 3, groove pressing plate 4, cruciform anti-slop serrations 5, band blind hole and the first pairing steel sheet 6 of threaded hole, large radius arrowband friction disc 7, second pairing steel sheet 8, outer hub 9, support casing 10, rotary drive input 11, rotary input motor 12, interior hub 13, adjusting play steel disc 14, thermopair 15 and high sensitivity acceleration transducer 16; Wherein, axial pressure power end 2 is provided with pressure transducer; Rotary drive input 11 is provided with speed probe;
The structure & working mechanism of this clutch coupling experiment test platform is as follows:
This clutch coupling experiment test platform power is input as two ends input mode: one end is for from left to right, power is entered by the input end motor 1 being in high order end, the start cylinder of input end motor 1 right-hand member and axial pressure power end 2 is rigidly connected, axial pressure power end 2 right-hand member and terminal pad 3 are bolted, and terminal pad 3 right-hand member and groove pressing plate 4 are rigidly connected by hexagon socket head cap screw, like this, terminal pad 3 and groove pressing plate 4 are under the effect of axial pressure power end 2, together along with axial pressure power end 2 carries out axial feed motion, and be end contact mode between groove pressing plate 4 right-hand member and the first pairing steel sheet 6, final dynamic action is on the end face of the first pairing steel sheet 6, first pairing steel sheet 6, friction disc 7 and the second pairing steel sheet 8 are end-face friction from left to right each other and contact mounting means, and be the state that is connected with a joggle by spline tooth between the second pairing steel sheet 8 external tooth and outer hub 9 internal tooth being placed in outside, for being rigidly connected between outer hub 9 right-hand member and support casing 10, other end power from right to left, power is entered by rotary input motor 12, the rotary drive input 11 of driven rotary input end motor 12 left end carries out high speed rotary motion, rotary drive input 11 high order end is rigidly connected by bolt and interior hub 13, excessive for preventing input shaft amount of deflection, support and connection are carried out with support casing 10 by bearing in the middle part of rotary drive input 11, and for spline tooth is connected with a joggle state between interior hub 13 external tooth and friction disc 7 internal tooth, like this, when rotary drive input 11 carries out High Rotation Speed, movable friction plate 7 will be with to be rotated together,
Provided by the invention by real time data processing means, obtain the experimental test procedures of friction pair Thermoelastic Vibration characteristic in coupled/separated process, the method comprises the steps:
Step S1: in the combination of clutch coupling experiment test platform friction pair and detachment process, for preventing producing relative sliding between groove pressing plate 4 and the first pairing steel sheet 6, contact end face at groove pressing plate 4 and be machined to a few cruciform particular groove, and a cruciform anti-slop serrations 5 is installed in this cross groove, its teeth portion shape is identical with the first pairing steel sheet 6 external tooth form, and by rotating gravure pressing plate 4, make the internal tooth of itself and outer hub 9 be in engagement;
Step S2: the real-time temperature values recorded according to thermopair 15 and the heat distortion amount of calculating obtain the advance and retreat distance adding groove pressing plate 4, the distance that groove pressing plate 4 is exited should meet and is greater than heat distortion amount and friction pair and normally dallies required distance, distance can not be made again too large, friction pair spacing is excessive, pairing steel sheet can be made to depart from due to the adhesion of lubricating oil and the engaging of outer hub 9, through repeated measurement, when each friction pair gap is 0.5mm, for best clearance distance, for this experiment test, adjustment axial pressure power end 2, after groove pressing plate 4 and the first pairing steel sheet 6 are compressed, retreat 0.8mm ~ 1.5mm, preferred 1mm,
Three high sensitivity acceleration transducers 16 and three thermopairs 15 are arranged on the outside of the first pairing steel sheet 6, on the face that namely the first pairing steel sheet 6 combines with groove pressing plate 4 by step S3: according to the actual conditions of friction pair in testing table work; Wherein, paste by high-temp glue and be embedded in thermopair 15 by 120 degree of equally distributed three groups of blind holes in interval on first pairing steel sheet 6 in advance, blind hole diameter is 3mm; The outside of the pre-buried position of thermopair 15 is the position of acceleration transducer 16, and namely thermopair 15 and acceleration transducer 16 are arranged on same position, to ensure that measured temperature and vibration acceleration value are for same position dot characteristics;
For ease of installation and the cabling of thermopair 15, at thermopair 15 installed position, remove corresponding steel disc external toothing tooth, and at distance steel disc 6 and 2mm place, pressing plate 4 faying face position, on the axial direction of steel disc 6, process the through hole that a diameter is 2mm, the other end of through hole is communicated with blind hole, meanwhile, axial direction respectively uniform processing three ellipse holes of outer hub 9 will be corresponded, hole dimension size with acceleration transducer physical dimension for foundation;
Step S4: the position contacting corresponding three acceleration transducers 16 on end face at groove pressing plate 4, respective machined grooves, three grooves are each other in 120 ° of distributions, to make in pressurization cohesive process, groove pressing plate 4 can be made to avoid acceleration transducer 16, avoid damaging sensor, the inner cavity size of groove is greater than the physical dimension of acceleration transducer;
Step S5: be connected to by the torque sensor that the pressure transducer of clutch coupling experiment test platform, speed probe and platform carry in controller and computing machine, is connected to thermopair 15 and acceleration transducer 16 in data collecting instrument and corresponding computing machine;
According to by the actual service condition of test specimen, experiment table is carried out respectively to the moment of torsion under different lubrication flow, different pressures, different rotating speeds coupled/separated operating mode, rotation speed change characteristic, temperature and vibration acceleration characteristic test;
Step S6: for the external interference signal of lubricating oil and motor etc., carrying out real time data processing to measuring the vibration acceleration signal obtained, converting effective vibration displacement signal to, and in conjunction with temperature signal, through Data Management Analysis, obtain Thermoelastic Vibration characteristic.
Wherein, described three acceleration transducers are three axial acceleration sensors, sensitivity 500mV/g, frequency response 1000Hz.
Wherein, the X positive dirction of described three acceleration transducers all points to axle center, and Y-direction is that circumference is tangential, and Z positive dirction points to pressing plate.
Wherein, described three groups of blind holes, often organize blind hole and comprise three blind holes, these three blind hole positions distribute along radial direction, thus three groups of each self-corresponding thermopairs of blind hole, each position is divided into the downward temperature field test of Different Diameter of external diameter, central diameter and internal diameter, therefore three position totally 9 measuring points.
Wherein, in described step S5, degree of will speed up signal converts vibration displacement data to, and obtains the method for vibration characteristics, comprises the steps:
Step S501: for the external interference signal of lubricating oil and motor etc., to the acceleration signal of test, Hamming window function is adopted to be weighted process, and for making signal amplitude versus frequency characte comparatively steady in high order of frequency section performance, reduce amplitude fluctuations as far as possible, adopt 400 rank lowpass digital filters to carry out filtering, this wave filter complex frequency RESPONSE CALCULATION is counted and is selected 1024, and sample frequency is 1000H.After filtering, valid data amplitude is greater than undesired signal;
Step S502: to filtered signal, carries out circular frequency vector sum quadratic integral and calculates, obtain vibration displacement signal, and adopt AR autoregressive model to carry out power spectrumanalysis, integrated temperature field analysis result, obtain Thermoelastic Vibration characteristic.
Wherein, the depth of groove of described groove pressing plate 4 is set to the height being greater than acceleration transducer.
Wherein, the blind hole depth on described first pairing steel sheet 6 is set to 2.8mm ~ 3.2mm, preferred 3mm, and namely thermopair and rubbing surface spacing are 1mm.
In order to adjust
Principle in technical solution of the present invention implementation process:
Under the effect of dynamic rotation input end motor 12 and interior hub 13, friction disc is in high-velocity zone row rotation status, under the axial pressure load effect of power intake motor 1, groove pressing plate 4 compresses pairing steel sheet rapidly, steel disc and friction disc is made to be in bonding state, now electric rotating machine 12 cuts off power rapidly, the rotating speed of friction disc and pairing steel sheet declines rapidly, until be zero to stop operating, cut off the power of input end motor 1, and this hold-down mechanism is retreated, friction pair exits impaction state, completes a coupled/separated process.Initially be combined from groove pressing plate 4 with steel disc 6, combine completely during this period of time to friction pair, as shown in the displacement vibration time-domain signal schematic diagram of the acceleration time domain signal schematic representation of Fig. 2 (a), Fig. 2 (b), the AR autoregressive spectrum estimation of Fig. 2 (c) estimate, the friction disc between friction pair and pairing steel sheet are in rub and slip over journey.Frictional heat, can make friction disc occur thermoelastic deformation, under high rotating speed effect, will produce Thermoelastic Vibration phenomenon.Therefore, this patent, namely for this phenomenon, utilizes high precision acceleration transducer test vibration characteristic, the temperature of the corresponding point of thermocouple assay, and by special data processing means, the friction pair obtained under high linear speed rubs and slips over journey Thermoelastic Vibration characteristic.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (7)
1. a speed change friction disc rubs and slips over journey Thermoelastic Vibration characteristic test method, it is characterized in that, the method is implemented based on clutch coupling experiment test platform, this clutch coupling experiment test platform comprises: input end motor (1), axial pressure power end (2), terminal pad (3), groove pressing plate (4), cruciform anti-slop serrations (5), first pairing steel sheet (6), friction disc (7), second pairing steel sheet (8), outer hub (9), support casing (10), rotary drive input (11), rotary input motor (12), interior hub (13), thermopair (15) and acceleration transducer (16), wherein, axial pressure power end (2) is provided with pressure transducer, (11) are provided with speed probe to rotary drive input,
The structure & working mechanism of this clutch coupling experiment test platform is as follows:
This clutch coupling experiment test platform power is input as two ends input mode: one end is for from left to right, power is entered by the input end motor (1) being in high order end, the start cylinder of input end motor (1) right-hand member and axial pressure power end (2) is rigidly connected, axial pressure power end (2) right-hand member and terminal pad (3) are bolted, and terminal pad (3) right-hand member and groove pressing plate (4) are rigidly connected by hexagon socket head cap screw, like this, terminal pad (3) and groove pressing plate (4) are under the effect of axial pressure power end (2), together along with axial pressure power end (2) carries out axial feed motion, and be end contact mode between groove pressing plate (4) right-hand member and the first pairing steel sheet (6), final dynamic action is on the end face of the first pairing steel sheet (6), first pairing steel sheet (6), friction disc (7) and the second pairing steel sheet (8) are end-face friction from left to right each other and contact mounting means, and be the state that is connected with a joggle by spline tooth between the second pairing steel sheet (8) external tooth and outer hub (9) internal tooth being placed in outside, for being rigidly connected between outer hub (9) right-hand member and support casing (10), other end power from right to left, power is entered by rotary input motor (12), the rotary drive input (11) of driven rotary input end motor (12) left end carries out high speed rotary motion, rotary drive input (11) high order end is rigidly connected by bolt and interior hub (13), rotary drive input (11) middle part carries out support and connection with support casing (10) by bearing, and for spline tooth is connected with a joggle state between interior hub (13) external tooth and friction disc (7) internal tooth, like this, when rotary drive input (11) carries out High Rotation Speed, movable friction plate (7) will be with to be rotated together,
The method comprises the steps:
Step S1: in the combination of clutch coupling experiment test platform friction pair and detachment process, for preventing producing relative sliding between groove pressing plate (4) and the first pairing steel sheet (6), a few cross groove is machined at groove pressing plate (4) contact end face, and a cruciform anti-slop serrations (5) is installed in this cross groove, its teeth portion shape is identical with the first pairing steel sheet (6) external tooth form, and by rotating gravure pressing plate (4), make the internal tooth of itself and outer hub (9) be in engagement;
Step S2: adjustment axial pressure power end (2), after groove pressing plate (4) and the first pairing steel sheet (6) are compressed, retreats 0.8mm ~ 1.5mm;
Step S3: according to the actual conditions of friction pair in testing table work, three acceleration transducers (16) and three thermopairs (15) are arranged on the outside of the first pairing steel sheet (6), on the face that namely the first pairing steel sheet (6) combines with groove pressing plate (4); Wherein, three thermopairs (15) are embedded in the first pairing steel sheet (6) upper by 120 ° of equally distributed three groups of blind holes in interval; The outside of thermopair (15) pre-buried position is the position of acceleration transducer (16), namely thermopair (15) and acceleration transducer (16) are arranged on same position, to ensure that measured temperature and vibration acceleration value are for same position dot characteristics;
Step S4: the position of corresponding three acceleration transducers (16) on groove pressing plate (4) contact end face, respective machined grooves, three grooves are each other in 120 ° of distributions, to make in pressurization cohesive process, groove pressing plate (4) can be made to avoid acceleration transducer (16), avoid damaging sensor, the inner cavity size of groove is greater than the physical dimension of acceleration transducer;
Step S5: be connected to by the torque sensor that the pressure transducer of clutch coupling experiment test platform, speed probe and platform carry in controller and computing machine, is connected in data collecting instrument and corresponding computing machine by thermopair (15) and acceleration transducer (16);
According to by the actual service condition of test specimen, experiment table is carried out respectively to the moment of torsion under different lubrication flow, different pressures, different rotating speeds coupled/separated operating mode, rotation speed change characteristic, temperature and vibration acceleration characteristic test;
Step S6: for the external interference signal of lubricating oil and motor, carrying out real time data processing to measuring the vibration acceleration signal obtained, converting effective vibration displacement signal to, and in conjunction with temperature signal, through Data Management Analysis, obtain Thermoelastic Vibration characteristic.
2. speed change friction disc as claimed in claim 1 rubs and slips over journey Thermoelastic Vibration characteristic test method, and it is characterized in that, described three acceleration transducers are three axial acceleration sensors, sensitivity 500mV/g, frequency response 1000Hz.
3. speed change friction disc as claimed in claim 2 rubs and slips over journey Thermoelastic Vibration characteristic test method, and it is characterized in that, the X positive dirction of described three acceleration transducers all points to axle center, and Y-direction is that circumference is tangential, and Z positive dirction points to pressing plate.
4. speed change friction disc as claimed in claim 1 rubs and slips over journey Thermoelastic Vibration characteristic test method, it is characterized in that, described three groups of blind holes, often organize blind hole and comprise three blind holes, these three blind hole positions distribute along radial direction, thus three groups of each self-corresponding thermopairs of blind hole, each position is divided into the downward temperature field test of Different Diameter of external diameter, central diameter and internal diameter, three position totally 9 measuring points.
5. speed change friction disc as claimed in claim 1 rubs and slips over journey Thermoelastic Vibration characteristic test method, and it is characterized in that, the depth of groove of described groove pressing plate (4) is set to the height being greater than acceleration transducer.
6. speed change friction disc as claimed in claim 1 rubs and slips over journey Thermoelastic Vibration characteristic test method, and it is characterized in that, the blind hole depth on described first pairing steel sheet (6) is set to 2.8mm ~ 3.2mm.
7. speed change friction disc as claimed in claim 1 rubs and slips over journey Thermoelastic Vibration characteristic test method, and it is characterized in that, in described step S5, degree of will speed up signal converts vibration displacement data to, and obtains the method for vibration characteristics, comprises the steps:
Step S501: for the external interference signal of lubricating oil and motor, to the acceleration signal of test, Hamming window function is adopted to be weighted process, and for making signal amplitude versus frequency characte comparatively steady in high order of frequency section performance, reduce amplitude fluctuations as far as possible, adopt 400 rank lowpass digital filters to carry out filtering, this wave filter complex frequency RESPONSE CALCULATION is counted and is selected 1024, and sample frequency is 1000H; After filtering, valid data amplitude is greater than undesired signal;
Step S502: to filtered signal, carries out circular frequency vector sum quadratic integral and calculates, obtain vibration displacement signal, and adopt AR autoregressive model to carry out power spectrumanalysis, integrated temperature field analysis result, obtain Thermoelastic Vibration characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366815.6A CN104931259B (en) | 2015-06-29 | 2015-06-29 | A kind of speed change friction plate rubs and slips over journey Thermoelastic Vibration characteristic test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366815.6A CN104931259B (en) | 2015-06-29 | 2015-06-29 | A kind of speed change friction plate rubs and slips over journey Thermoelastic Vibration characteristic test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104931259A true CN104931259A (en) | 2015-09-23 |
| CN104931259B CN104931259B (en) | 2017-06-09 |
Family
ID=54118532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510366815.6A Expired - Fee Related CN104931259B (en) | 2015-06-29 | 2015-06-29 | A kind of speed change friction plate rubs and slips over journey Thermoelastic Vibration characteristic test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104931259B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402395A (en) * | 2016-06-28 | 2017-02-15 | 四川大学 | Dry gas seal structure suitable for vibration detection |
| CN108229088A (en) * | 2016-12-22 | 2018-06-29 | 通用电气公司 | Modelling and visualization of the vibrating mechanism in remaining space |
| CN109211332A (en) * | 2018-11-05 | 2019-01-15 | 北京理工大学 | A kind of dry clutch friction plate real time temperature torque-measuring apparatus |
| CN109297706A (en) * | 2018-06-26 | 2019-02-01 | 北京信息科技大学 | The experimental rig and method of the interface topography characteristic influence that rubs sliding on wet clutch |
| CN110220700A (en) * | 2019-07-12 | 2019-09-10 | 吉孚动力技术(中国)有限公司 | A kind of clutch friction plate test bench for performance |
| CN110701473A (en) * | 2019-11-27 | 2020-01-17 | 安徽江淮汽车集团股份有限公司 | Cooling oil flow measuring system of clutch |
| CN111828437A (en) * | 2020-06-19 | 2020-10-27 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN112393815A (en) * | 2020-12-09 | 2021-02-23 | 太原理工大学 | Method for testing transient temperature field of friction surface of large-diameter fluid viscous clutch |
| CN116481797A (en) * | 2023-04-17 | 2023-07-25 | 中国北方车辆研究所 | Friction and torsional vibration coupling working condition test system and method for gear shifting control element |
| CN116754220A (en) * | 2023-06-21 | 2023-09-15 | 北京理工大学 | High-speed friction motion gesture measuring device for wet clutch friction pair |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011053029A (en) * | 2009-08-31 | 2011-03-17 | Honda Motor Co Ltd | Clutch torque transmission capacity analysis device of automatic transmission |
| CN102564756A (en) * | 2010-12-31 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Automobile transmission vibration analysis testing method and device |
| CN102620931A (en) * | 2012-03-28 | 2012-08-01 | 天津市优耐特汽车电控技术服务有限公司 | Device and method for testing performance of automatic transmission |
| JP2013167549A (en) * | 2012-02-16 | 2013-08-29 | Kayaba System Machinery Kk | Slip load test method of rotational inertia mass damer and rotational inertia mass damper |
| CN103759940A (en) * | 2014-01-17 | 2014-04-30 | 雪龙集团股份有限公司 | Test bed and method for testing damping of silicone oil clutch of engine cooling fan |
| CN103837341A (en) * | 2014-01-24 | 2014-06-04 | 中国北方车辆研究所 | Method for obtaining circumferential load distribution of friction plate tooth part through variable-contact-rigidity testing |
-
2015
- 2015-06-29 CN CN201510366815.6A patent/CN104931259B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011053029A (en) * | 2009-08-31 | 2011-03-17 | Honda Motor Co Ltd | Clutch torque transmission capacity analysis device of automatic transmission |
| CN102564756A (en) * | 2010-12-31 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Automobile transmission vibration analysis testing method and device |
| JP2013167549A (en) * | 2012-02-16 | 2013-08-29 | Kayaba System Machinery Kk | Slip load test method of rotational inertia mass damer and rotational inertia mass damper |
| CN102620931A (en) * | 2012-03-28 | 2012-08-01 | 天津市优耐特汽车电控技术服务有限公司 | Device and method for testing performance of automatic transmission |
| CN103759940A (en) * | 2014-01-17 | 2014-04-30 | 雪龙集团股份有限公司 | Test bed and method for testing damping of silicone oil clutch of engine cooling fan |
| CN103837341A (en) * | 2014-01-24 | 2014-06-04 | 中国北方车辆研究所 | Method for obtaining circumferential load distribution of friction plate tooth part through variable-contact-rigidity testing |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402395A (en) * | 2016-06-28 | 2017-02-15 | 四川大学 | Dry gas seal structure suitable for vibration detection |
| CN108229088B (en) * | 2016-12-22 | 2021-11-30 | 通用电气公司 | Modeling and visualization of vibration mechanisms in residual space |
| CN108229088A (en) * | 2016-12-22 | 2018-06-29 | 通用电气公司 | Modelling and visualization of the vibrating mechanism in remaining space |
| CN109297706A (en) * | 2018-06-26 | 2019-02-01 | 北京信息科技大学 | The experimental rig and method of the interface topography characteristic influence that rubs sliding on wet clutch |
| CN109297706B (en) * | 2018-06-26 | 2023-09-15 | 北京信息科技大学 | Device and method for testing influence of interface morphology on slip and friction characteristics of wet clutch |
| CN109211332A (en) * | 2018-11-05 | 2019-01-15 | 北京理工大学 | A kind of dry clutch friction plate real time temperature torque-measuring apparatus |
| CN110220700A (en) * | 2019-07-12 | 2019-09-10 | 吉孚动力技术(中国)有限公司 | A kind of clutch friction plate test bench for performance |
| CN110701473A (en) * | 2019-11-27 | 2020-01-17 | 安徽江淮汽车集团股份有限公司 | Cooling oil flow measuring system of clutch |
| CN111828437A (en) * | 2020-06-19 | 2020-10-27 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN111828437B (en) * | 2020-06-19 | 2022-10-28 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN112393815A (en) * | 2020-12-09 | 2021-02-23 | 太原理工大学 | Method for testing transient temperature field of friction surface of large-diameter fluid viscous clutch |
| CN116481797A (en) * | 2023-04-17 | 2023-07-25 | 中国北方车辆研究所 | Friction and torsional vibration coupling working condition test system and method for gear shifting control element |
| CN116754220A (en) * | 2023-06-21 | 2023-09-15 | 北京理工大学 | High-speed friction motion gesture measuring device for wet clutch friction pair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104931259B (en) | 2017-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104931259A (en) | Method for testing thermal-elastic coupled vibration characteristics in friction and sliding process of variable speed friction plate | |
| CN108398262B (en) | Wet friction pair belt row torque test bed and test method | |
| CN104697787A (en) | Gearbox test bed based on multi-information fusion and detection method thereof | |
| CN101329220B (en) | Dynamics characteristic experimental apparatus of heavy type gas turbine pull rod rotor | |
| EP1743157B1 (en) | Structurally tuned vibration based component checking method | |
| AU2009313070A1 (en) | Method and device for vibration analyses and sample database therefor and use of a sample database | |
| CN105372064A (en) | Performance detection and analysis test stand of engineering machinery transmission assembly and test method thereof | |
| CN111551363B (en) | System and method for measuring friction of gear transmission tooth surface | |
| CN103837341A (en) | Method for obtaining circumferential load distribution of friction plate tooth part through variable-contact-rigidity testing | |
| CN204439348U (en) | A kind of wheel box test-bed based on Multi-information acquisition | |
| CN102865929B (en) | Measurement and test device for transient surface temperature of friction plate of dry clutch | |
| CN104483053A (en) | Torque measuring device of small engine | |
| CN208155590U (en) | A kind of electro spindle comprehensive performance testing system | |
| Ulus et al. | An experimental study on gear diagnosis by using acoustic emission technique | |
| CN205384141U (en) | Engineering machine tool transmission assembly performance detection and analysis test bench | |
| CN111458016A (en) | Method for rapidly detecting vibration of drive axle assembly | |
| Donmez et al. | Experimental and theoretical investigation of vibro-impact motions of a gear pair subjected to torque fluctuations to define a rattle noise severity index | |
| CN109894925B (en) | Thin-wall part milling vibration monitoring method based on embedded piezoelectric sensor | |
| CN104568431A (en) | Hydro-viscous transmission testing device for measuring dynamic parameter of oil film | |
| CN110529201B (en) | Turbine blade rotating dynamic airflow exciting force measuring device | |
| CN203929765U (en) | Oil film reliability test | |
| CN103630278B (en) | A kind of current vortex retarder torque measuring method | |
| TW201729917A (en) | Status detection method of rolling apparatus | |
| CN201974345U (en) | Friction property test flume | |
| CN204314071U (en) | A kind of liquid for measuring oil film dynamic parameter glues transmission test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20200629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |