CN202676281U - Test analytical apparatus for friction noise - Google Patents
Test analytical apparatus for friction noise Download PDFInfo
- Publication number
- CN202676281U CN202676281U CN201220271734XU CN201220271734U CN202676281U CN 202676281 U CN202676281 U CN 202676281U CN 201220271734X U CN201220271734X U CN 201220271734XU CN 201220271734 U CN201220271734 U CN 201220271734U CN 202676281 U CN202676281 U CN 202676281U
- Authority
- CN
- China
- Prior art keywords
- sensor
- support
- friction
- vertical
- fixed
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to a test analytical apparatus for friction noise. A base plate is fixedly provided with a support pedestal; two ends of a horizontal support are fixedly arranged on the support pedestal through piezoelectric force transducers; a lower clamp clamping a lower friction piece is fixedly arranged on a reciprocating motion apparatus; an upper clamp clamping an upper friction piece traverses the horizontal support to be contacted to a strain type force sensor; the strain type force sensor is fixedly arranged at the bottom of a two dimensional mobile station; the upper clamp is provided with a three dimensional acceleration transducer; an acoustic sensor is positioned near to the contact interface of the upper and lower friction pieces; the two dimensional mobile station, the strain type force sensor and the reciprocating motion apparatus are electrically connected with a control system; and the piezoelectric force transducers, the three dimensional acceleration transducer and the acoustic sensor are electrically connected with a signal test analysis system. According to the utility model, friction vibration, frictional force and noise signals can be acquired synchronously and dynamically, the mutual relation and influence rules among friction noise, the interface and the system characteristic can be accurately analyzed, and test base is provided for noise reduction design of mechanical equipment, and performance and life enhancement.
Description
Technical field
The utility model belongs to frictional noise technical field in the mechanical engineering.
Background technology
Air, water and noise pollution are called as the environmentally hazardous three major source of pollution of industrial civilization.High speed development along with modern industrial technology, when offering convenience with high benefit to society, the industry that radiates and traffic noise have also brought serious harm and loss, and the frictional noise problem that a large amount of rubbing contact positions produce in industry and the traffic plant equipment is the most serious.Frictional noise refers to all irregular sound of a kind of frequency of sending because of friction and sound pressure level, all be the high frequency noise more than the 1kH usually.It is not only very large to human auditory system and surrounding enviroment hurt evil, but also have a strong impact on and hinder many friction systems, such as the wheel rail system of brake system, track transport, cutting system of lathe, turbine blade joint, joint of robot, motor driven systems, marine water lubricating bearings etc. in industrial normal use.
Vibration and noise that friction causes are very complicated spontaneous phenomenons, the relation of frictional noise and frictional vibration is very close, and the size of its generation and sound pressure level is relevant with the many factors such as material property, interfacial characteristics, lubricating condition and environmental baseline of the rigidity of friction system, friction pair.At present overwhelming majority research all is the relation that driven mechanics angle is come analytic system instability and noise.And the tribology correlative study shows, tribological property and the generation of noise have very large related, and the tribological property of friction material and contact interface thereof changes again very greatly.Therefore, the means such as dynamics and finite element simulation calculation all can't be predicted generation and the characteristic of frictional noise accurately.How accurately to carry out the frictional noise experimental study, the inner link of system's further investigation various factors and frictional noise is the key of understanding all kinds of frictional noise mechanisms of production.But the many factors at present less from the work of Tribological Test angle research frictional noise, that this mainly relates to owing to the frictional noise test, manual control reproduce or the simulation difficulty, and test repeatability and measuring accuracy require high.
The utility model content
The purpose of this utility model provides a kind of analysis of experiments device of frictional noise; this device can synchronous dynamic gather frictional vibration, friction force, noise signal; thereby analyze more exactly the mutual relationship of frictional noise and interface and system performance and affect rule; to disclose the mechanism of production of frictional noise; be vibration noise, the protection of the environment that occurs in control and the reduction friction process; improve the relevant design of plant equipment, usability and the life-span of improving equipment and apparatus provide more unfailing test foundation.
The utility model realizes that the technical scheme that its goal of the invention adopts is: a kind of analysis of experiments device of frictional noise, comprise support, and the two-dimensional movement platform that install the seat top plate bottom, the reciprocator of installing on the frame bottom plate is characterized in that:
Fixed support pedestal on the base plate of described support, the two ends of horizontal stand are fixed on the stand base by piezoelectric force transducer;
The lower clamp of friction member is fixed on the reciprocator under the clamping;
The upper anchor clamps of friction member pass horizontal stand and contact with the bottom surface of strain force sensor in the clamping, and strain force sensor is fixed on the bottom of two-dimensional movement platform, and three dimension acceleration sensor is installed in the side of upper anchor clamps.
Acoustic sensor is fixed on the support by mounting bracket, and its induction end is positioned near the upper and lower friction member contact interface;
Two-dimensional movement platform, strain force sensor, reciprocator are electrically connected with control system; Piezoelectric force transducer, three dimension acceleration sensor, acoustic sensor are electrically connected with the signal testing analytic system.
Using method of the present utility model and the course of work are:
Upper friction member is fixed on the upper anchor clamps, and lower friction member is fixed on the lower clamp.Strain force sensor on upper anchor clamps pass horizontal stand and are fixed on the two-dimensional movement platform contacts; By about the control system control two-dimensional movement platform, move left and right, make strain force sensor compress upper anchor clamps and make upper and lower friction member contact after keep the normal load set.Control system control reciprocator moves back and forth with shift reciprocately and the speed of setting, and makes between upper and lower friction member and produces reciprocating friction.In the Tribological Test, normal load during the to-and-fro movement of 2 D force sensor Real-Time Monitoring, send data control system to, by control system real-time feedback control is carried out in the vertical position of two-dimensional movement platform, guarantee that the normal load between the upper and lower friction member is in constant set-point all the time.
When carrying out reciprocating friction, friction force finally passes to the piezoelectric force transducer that is fixed on the horizontal stand two ends through upper anchor clamps, horizontal stand.Simultaneously, be installed in three dimension acceleration sensor on the anchor clamps and can gather vibration acceleration signal on three directions of friction member, near the acoustic sensor the frictional interface gathers the frictional noise signal.Piezoelectric force transducer, three dimension acceleration sensor, acoustic sensor send the signal that collects to the signal testing analytic system and carry out analyzing and processing.
Given different parameter can be carried out the reciprocating sliding friction vibration noise test under the different operating modes.For the upper and lower friction member of difformity and size, adopt corresponding upper and lower anchor clamps can finish test.
Compared with prior art, the invention has the beneficial effects as follows:
The utility model makes strain force sensor compress upper anchor clamps by control system control two-dimensional movement platform, and the Real-time Feedback by strain force sensor, applies consistently the load of setting between upper and lower friction member.In addition, control system realizes accurately controlled to-and-fro movement by the lower friction member of reciprocator control, thereby the upper and lower friction member of realization friction pair is at the fricting movement of setting under load, shift reciprocately and the velocity conditions.In the fricting movement of realizing friction pair, piezoelectric force transducer is measured the friction force on the frictional interface simultaneously, vibration acceleration signal in the three dimension acceleration sensor collection on three directions of friction member, acoustic sensor then closely gathers the frictional noise signal.Realized the precise synchronization collection of friction force, frictional vibration, three kinds of signals of noise in the friction system; the signal of the friction force that gathers out and vibration acceleration and noise signal are compared, analyze; thereby study more exactly the mutual relationship of frictional noise and interface and system performance and affect rule; to disclose the mechanism of production of frictional noise; be vibration noise, the protection of the environment that occurs in control and the reduction friction process; improve the relevant design of plant equipment, usability and the life-span of improving equipment and apparatus provide more unfailing test foundation.
Adopt piezoelectric force transducer to have higher natural frequency than other power sensor, thereby can collect the radio-frequency component of friction force signal, can analyze well the high-frequency signal of friction force and the relation of vibration acceleration and noise signal, analyze accurately more comprehensively the relation of friction force and frictional noise and affect rule.
Use this device to carry out in the process of the test, the simulation of fricting movement is by the control system auto-controll operation, and the collection analysis of frictional vibration, friction force, frictional noise signal is carried out automatically by the signal testing analytic system.The simulation of whole test and analysis automated degree are high, and control is high with the precision of test, the favorable reproducibility of test figure.Also be convenient to simultaneously more conversion materials, adjust parameter different friction pairs is carried out frictional noise test and analysis under different working conditions.
The concrete formation of above-mentioned reciprocator is: vertical reciprocal drive motor is installed on the base plate of support, and back and forth the axle of drive motor links to each other with the slide block of level by toggle, and the chute of slider bottom cooperates with slide rail on the frame bottom plate; Lower clamp is fixed on the slide block, and vertical reciprocal drive motor is electrically connected with control system.
This toggle can the simple and effective to-and-fro movement that rotatablely moving of motor is changed into lower clamp.By the rotating speed and the eccentric throw of adjusting crank of control motor, can realize easily the up and down steady accurate controlled reciprocating friction motion between the friction member of different slide displacements, speed (frequency).
The two ends of above-mentioned horizontal stand by the concrete structure that piezoelectric force transducer is fixed on the stand base are: the installed surface of piezoelectric force transducer is connected with sensor installation seat by mounting screw, sensor installation seat is entrenched on the stand base, and is locked by lock-screw; The workplace of piezoelectric force transducer is threaded with web member, and the pin of the other end of web member inserts the hole of horizontal stand end downside; The piezoelectric force transducer side face is linked in the maintainance set, the end face of maintainance set also is fixed on the medial surface of stand base by the maintainance set mounting screw by the register pin location again, deep-slotted chip breaker is driven on maintainance set top, and this deep-slotted chip breaker cooperates with the little axle of support that is installed in horizontal stand end upside.
The installed surface of piezoelectric force transducer is connected on the stand base by sensor installation seat, makes its installation more convenient also more firm.The workplace of piezoelectric force transducer carries out pin-and-hole with horizontal stand and cooperates, and can transmit accurately the friction force of level, can effectively eliminate again the force and moment of other direction to the interference of sensor, guarantees its friction force that records more accurately and reliably.Deep-slotted chip breaker on the maintainance set of piezoelectric force transducer side face fit cooperates with the little axle of support on the support, make the center of horizontal stand and stand base, and guarantee that horizontal stand roll over offset neither can occur also can not be offset by occurred level, the center that has guaranteed piezoelectricity power transmission sensor overlaps with the direction of friction force, the accurate collection of friction force in the reciprocating friction process.
Consisting of of above-mentioned two-dimensional movement platform: vertical motor is fixed on the top board of support, and the axle of vertical motor connects with vertical screw mandrel, and vertical screw mandrel downwards and the screw-internal thread fit of vertical slipper; The guide groove at vertical slipper rear portion cooperates with vertical guide rail on the support, the horizontal guide rail of vertical slipper bottom cooperates with the guide groove on cross sliding clock top, horizontal motor is fixed on the vertical slipper right side, the axle of horizontal motor connects with horizontal lead screw, the screw-internal thread fit of horizontal lead screw and cross sliding clock, the bottom of cross sliding clock is threaded with strain force sensor.
Adopt motor-driven screw body and guide rail mechanism to come realization level and vertical motion.These mechanism constructions are simple, reliable; And the control of the controlled system of motor is so that its position adjustment is accurate, easy.In addition, measure in real time the instantaneous value of normal load by strain force sensor, feed back to control system, by control system vertical servomotor is regulated control in real time, guarantee that the normal load that applies is in constant set-point all the time in friction test.
The concrete mode that above-mentioned upper anchor clamps pass horizontal stand is: the tight chimeric copper sheathing in the middle part of horizontal stand, and the inner chamber of copper sheathing is cylindrical, outside surface is up big and down small taper shape; The middle part of upper anchor clamps and copper sheathing clearance fit, on horizontal stand, be pressed with two copper sheathing briquettings by housing screw, two copper sheathing briquettings all are pressed on horizontal stand and the copper sheathing simultaneously, one of them copper sheathing briquetting is equipped with clamp locating pin, and vertical locating slot of clamp locating pin and upper anchor clamps outside surface cooperates on this.
Upper anchor clamps are installed on the horizontal stand by copper sheathing, both have been convenient to the installation of anchor clamps, simultaneously by changing the copper sheathing of different size, the upper anchor clamps of conveniently replaced different size.Straight shape and supporting briquetting thereof in the copper sheathing outer cone are so that copper sheathing can be good at realizing and the wringing fit of horizontal stand and the clearance fit of upper anchor clamps that simultaneously its installation, dismounting are very convenient again.
Above-mentioned piezoelectric force transducer is one-way piezoelectric formula power sensor, and range is: 500lbf, sensitivity is: 9.94mV/lbf, natural frequency is 70kHz.
The range of above-mentioned three dimension acceleration sensor is ± 50g, and sensitivity is 100mV/g, and frequency response range is 1Hz-6kHz.
The dynamic range of above-mentioned acoustic sensor is 15dB-146dB, and sensitivity is 50mV/Pa, and frequency response range is 3.5Hz-20kHz.
Like this, so that the utility model device can be realized high-precision reciprocating sliding friction noise fest, and synchro measure goes out high-frequency friction force, frictional vibration, noise signal accurately, carries out analysis and the contrast of effective frictional noise.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of the test unit of the utility model embodiment.
Fig. 2 is the syndeton schematic top plan view of horizontal stand, piezoelectric force transducer, support support.
Fig. 3-the 18th, with the test unit of the utility model embodiment and using method to the reciprocatingly slide result of the frictional vibration noise fest that gathers under the condition of a concrete friction pair material.Wherein:
Fig. 3 is the friction force signal that left piezoelectric force transducer gathered a reciprocating friction period of motion;
Fig. 4 is the friction force signal that right piezoelectric force transducer collected in the same cycle;
Fig. 5 is the noise signal that same cycle acoustic sensor collects;
Fig. 6 is tangential direction (direction) vibration acceleration signal that same cycle acceleration transducer collects;
Fig. 7 is the normal orientation vibration acceleration signal that same cycle acceleration transducer collects;
Fig. 8 is the longitudinal direction vibration acceleration signal that same cycle acceleration transducer collects.
Fig. 9 is friction force signal (left piezoelectric force transducer) auto-power spectrum analysis;
Figure 10 is friction force signal (right piezoelectric force transducer) auto-power spectrum analysis;
Figure 11 sound pressure signal auto-power spectrum is analyzed, and Figure 12 is the analysis of tangential direction (direction) vibration acceleration signal auto-power spectrum;
Figure 13 is the analysis of normal orientation vibration acceleration signal auto-power spectrum;
Figure 14 is the analysis of horizontal direction vibration acceleration signal auto-power spectrum.
Figure 15 is friction force signal time domain details waveform.
Figure 16 is tangential direction (direction) vibration acceleration signal time domain details waveform.
Figure 17 does not also go out the at present polishing scratch optical microscope photograph of friction member of noise in the test.
Figure 18 goes out the at present polishing scratch optical microscope photograph of friction member of noise in the test.
Embodiment
Embodiment
Fig. 1, Fig. 2 illustrate, a kind of embodiment of the present utility model is: a kind of analysis of experiments device of frictional noise comprises support 4, the two-dimensional movement platform 5 that install the top board 4A bottom of support 4, the upper reciprocator 16 of installing of the base plate 4B of support 4 is characterized in that:
The upper fixed support pedestal 1 of the base plate 4B of described support 4, the two ends of horizontal stand 3 are fixed on the stand base 1 by piezoelectric force transducer 17;
The lower clamp 24 of friction member 23 is fixed on the reciprocator 16 under the clamping;
The upper anchor clamps 8 of friction member 22 pass horizontal stand 3 and contact with the bottom surface of strain force sensor 6 in the clamping, and strain force sensor 6 is fixed on the bottom of two-dimensional movement platform 5, and three dimension acceleration sensor 7 is installed in the side of upper anchor clamps 8.
Two-dimensional movement platform 5, strain force sensor 6, reciprocator 16 are electrically connected with control system; Piezoelectric force transducer 17, three dimension acceleration sensor 7, acoustic sensor 25 are electrically connected with the signal testing analytic system.
Fig. 1 illustrates, the concrete formation of this routine reciprocator 16 is: vertical reciprocal drive motor 16A is installed on the base plate 4B of support 4, back and forth the axle of drive motor 16A links to each other with the slide block 16C of level by toggle 16B, and the chute of slide block 16C bottom cooperates with the slide rail 16D on support 4 base plates; Lower clamp 24 is fixed on the slide block 16C, and vertical reciprocal drive motor 16A is electrically connected with control system.
Fig. 1,2 illustrates, the two ends of this routine horizontal stand 3 by the concrete structure that piezoelectric force transducer 17 is fixed on the stand base 1 are: the installed surface of piezoelectric forces formula sensor 17 is connected with sensor installation seat 13 by mounting screw 14, sensor installation seat 13 is entrenched on the stand base 1, and by lock-screw 12 lockings; The workplace of piezoelectric force transducer 17 is threaded with web member 19, and the pin of the other end of web member 19 inserts the hole of horizontal stand 3 end downsides; Piezoelectric force transducer 17 side faces are linked in the maintainance set 2, the end face of maintainance set 2 also is fixed on the medial surface of stand base 1 by maintainance set mounting screw 18 by register pin 15 location again, deep-slotted chip breaker is driven on maintainance set 2 tops, and this deep-slotted chip breaker cooperates with the little axle 11 of the support that is installed in horizontal stand 3 end upsides.
Consisting of of the two-dimensional movement platform 5 that this is routine: vertical motor 5F is fixed on the top board 4A of support 4, and the axle of vertical motor 5F connects with vertical screw mandrel 5E, and vertical screw mandrel 5E downwards and the screw-internal thread fit of vertical slipper 5A; The guide groove at vertical slipper 5A rear portion cooperates with vertical guide rail 5G on the support 4, the horizontal guide rail 5B of vertical slipper 5A bottom cooperates with the guide groove on cross sliding clock 5D top, horizontal motor 5H is fixed on vertical slipper 5A right side, the axle of horizontal motor 5H connects with horizontal lead screw 5C, the screw-internal thread fit of horizontal lead screw 5C and cross sliding clock 5D, the bottom of cross sliding clock 5D is threaded with strain force sensor 6.
The concrete mode that the upper anchor clamps 8 of this example pass horizontal stand 3 is: the tight chimeric copper sheathing 21 in the middle part of horizontal stand 3, and the inner chamber of copper sheathing 21 is cylindrical, outside surface is up big and down small taper shape; The middle part of upper anchor clamps 8 and copper sheathing 21 clearance fit; On horizontal stand 3, be pressed with two copper sheathing briquettings 10 by housing screw 9, two copper sheathing briquettings 10 all are pressed on horizontal stand 3 and the copper sheathing 21 simultaneously, one of them copper sheathing briquetting 10 is equipped with clamp locating pin 20, and vertical locating slot of clamp locating pin 20 and upper anchor clamps 8 outside surfaces cooperates on this.
This routine piezoelectric force transducer 17 is one-way piezoelectric formula power sensor, and range is that 500lbf, sensitivity are that 9.94mV/lbf, natural frequency are 70kHz.
The range of this routine three dimension acceleration sensor 7 is ± 50g, and sensitivity is 100mV/g, and frequency response range is 1Hz-6kHz.
The dynamic range of this routine acoustic sensor 25 is 15dB-146dB, and sensitivity is 50mV/Pa, and frequency response range is 3.5Hz-20kHz.
Fig. 1, Fig. 2 also illustrate, and use above-mentioned device to carry out the method for frictional noise analysis of experiments, and its practice is:
The lower friction member 23 of friction pair is clamped on the lower clamp 24, and lower clamp 24 is fixed on the reciprocator 16; Use the upper friction member 22 of anchor clamps 8 clamping friction pairs, upper anchor clamps 8 pass horizontal stand 3 and contact with the bottom surface of strain force sensor 6, three dimension acceleration sensor 7 is installed in the side of upper anchor clamps 8, the two ends of horizontal stand 3 are fixed on the stand base 1 by piezoelectric force transducer 17, and strain force sensor 6 is fixed on the bottom of two-dimensional movement platform 5; The induction end of acoustic sensor 25 is positioned near upper and lower friction member 22,23 contact interfaces;
By about the control system control two-dimensional movement platform 5, move left and right, the normal load that makes strain force sensor 6 compress upper anchor clamps 8 and make upper and lower friction member 22,23 contacts and keep setting; Then, control system control reciprocator 16 moves back and forth with the frequency of setting, and makes upper and lower friction member 22,23 generation reciprocating frictions;
When reciprocating friction occurs in upper and lower friction member 22,23, it is friction force that the piezoelectric force transducer 17 of horizontal stand 3 ends is measured tangential pressure, three dimension acceleration sensor 7 on the upper anchor clamps 8 gathers the vibration acceleration signal on upper 22 3 directions of friction member, near the frictional interface acoustic sensor 25 gathers the frictional noise signal, the signal of three kinds of sensors all is sent to the signal testing analytic system, realizes vibration acceleration on frictional noise, three directions and precise synchronization dynamic acquisition and the real-time analysis of friction force.
Fig. 3-the 18th, with the test unit of present embodiment and using method to the reciprocatingly slide result of the frictional vibration noise fest that gathers under the condition of a concrete friction pair material.Test material is: upper friction member is GCr 15 steel balls of Φ=10mm, the vermicular cast iron train brake disk material test block that lower friction member is 20mm * 10mm * 10mm.Test condition is: normal load Fn=20N, reciprocating frequence are f=1Hz, and the reciprocation cycle number of times is N=1500, and the sample frequency of friction force signal is 12.8kHz, 25 ℃ of environment temperatures, humidity 60%.
Fig. 3 is the friction force signal that left piezoelectric force transducer gathered a reciprocating friction period of motion; Fig. 4 is the friction force signal that right piezoelectric force transducer collected in the same cycle; Fig. 5 is the noise signal that same cycle acoustic sensor collects; Fig. 6 is tangential direction (direction) vibration acceleration signal that same cycle acceleration transducer collects; Fig. 7 is the normal orientation vibration acceleration signal that same cycle acceleration transducer collects; Fig. 8 is the longitudinal direction vibration acceleration signal that same cycle acceleration transducer collects.Can find out in conjunction with these time domain figures, the steel ball of test and vermicular cast iron train brake dish when change in friction force is violent, vibration acceleration also very strong, the sound pressure signal performance obviously.Friction force, vibration acceleration, the noise three has better consistance in time domain.
Fig. 9 is friction force signal (left piezoelectric force transducer) auto-power spectrum analysis, Figure 10 is friction force signal (right piezoelectric force transducer) auto-power spectrum analysis, Figure 11 sound pressure signal auto-power spectrum is analyzed, Figure 12 is the analysis of tangential direction (direction) vibration acceleration signal auto-power spectrum, Figure 13 is the analysis of normal orientation vibration acceleration signal auto-power spectrum, and Figure 14 is the analysis of horizontal direction vibration acceleration signal auto-power spectrum.Can find out that in conjunction with these frequency domain figures the steel ball of test is corresponding with the dominant frequency of each signal of vermicular cast iron train brake dish good.Friction force, vibration acceleration, the noise three has better consistance in frequency domain.
Figure 15 is friction force signal time domain details waveform.The time domain details waveform of friction force signal is smooth good, disturbs lessly, and measurement accurately and reliably.
Figure 16 is tangential direction (direction) vibration acceleration signal time domain details waveform.The time domain details waveform of acceleration signal is smooth good, disturbs lessly, and measurement accurately and reliably.
Figure 17 does not also go out the at present polishing scratch optical microscope photograph of friction member of noise in the test.Figure 18 goes out the at present polishing scratch optical microscope photograph of friction member of noise in the test.Contrast two figure as can be known, when noise appears in frictional interface in the test, the polishing scratch inside of lower friction member has obviously peels off and the rolling and pile up of abrasive dust, it is also comparatively serious to wear and tear, verify well the relevance of noise signal and grinding defect morphology, and helped to disclose the mechanism that frictional interface produces frictional noise.
Claims (8)
1. the analysis of experiments device of a frictional noise, comprise support (4), the two-dimensional movement platform (5) that install top board (4A) bottom of support (4), the upper reciprocator (16) of installing of the base plate (4B) of support (4) is characterized in that:
The upper fixed support pedestal (1) of the base plate (4B) of described support (4), the two ends of horizontal stand (3) are fixed on the stand base (1) by piezoelectric force transducer (17);
The lower clamp (24) of friction member under the clamping (23) is fixed on the reciprocator (16);
The upper anchor clamps (8) of friction member in the clamping (22) pass horizontal stand (3) and contact with the bottom surface of strain force sensor (6), strain force sensor (6) is fixed on the bottom of two-dimensional movement platform (5), and three dimension acceleration sensor (7) is installed in the side of upper anchor clamps (8);
Acoustic sensor (25) is fixed on by mounting bracket (26) on the base plate (4B) of support (4), and its induction end is positioned near upper and lower friction member (22, the 23) contact interface;
Two-dimensional movement platform (5), strain force sensor (6), reciprocator (16) are electrically connected with control system; Piezoelectric force transducer (17), three dimension acceleration sensor (7), acoustic sensor (25) are electrically connected with the signal testing analytic system.
2. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: the concrete formation of described reciprocator (16) is: vertical reciprocal drive motor (16A) is installed on the base plate (4B) of support (4), back and forth the axle of drive motor (16A) links to each other with the slide block (16C) of level by toggle (16B), and the chute of slide block (16C) bottom cooperates with the slide rail (16D) on support (4) base plate; Lower clamp (24) is fixed on the slide block (16C), and vertical reciprocal drive motor (16A) is electrically connected with control system.
3. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: the two ends of described horizontal stand (3) by the concrete structure that piezoelectric force transducer (17) is fixed on the stand base (1) are: the installed surface of piezoelectric forces formula sensor (17) is connected with sensor installation seat (13) by mounting screw (14), sensor installation seat (13) is entrenched on the stand base (1), and is locked by lock-screw (12); The workplace of piezoelectric force transducer (17) is threaded with web member (19), and the pin of the other end of web member (19) inserts the hole of horizontal stand (3) end downside; Piezoelectric force transducer (17) side face is linked in the maintainance set (2), the end face of maintainance set (2) also is fixed on the medial surface of stand base (1) by maintainance set mounting screw (18) by register pin (15) location again, deep-slotted chip breaker is driven on maintainance set (2) top, and this deep-slotted chip breaker cooperates with the little axle of support (11) that is installed in horizontal stand (3) end upside.
4. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: the consisting of of described two-dimensional movement platform (5): vertical motor (5F) is fixed on the top board (4A) of support (4), the axle of vertical motor (5F) connects with vertical screw mandrel (5E), and vertical screw mandrel (5E) downwards and the screw-internal thread fit of vertical slipper (5A); The guide groove at vertical slipper (5A) rear portion cooperates with vertical guide rail (5G) on the support (4), the horizontal guide rail (5B) of vertical slipper (5A) bottom cooperates with the guide groove on cross sliding clock (5D) top, horizontal motor (5H) is fixed on vertical slipper (5A) right side, the axle of horizontal motor (5H) connects with horizontal lead screw (5C), the screw-internal thread fit of horizontal lead screw (5C) and cross sliding clock (5D), the bottom of cross sliding clock (5D) is threaded with strain force sensor (6).
5. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: the concrete mode that described upper anchor clamps (8) pass horizontal stand (3) is: the tight chimeric copper sheathing in the middle part of horizontal stand (3) (21), the inner chamber of copper sheathing (21) is cylindrical, and outside surface is up big and down small taper shape; The middle part of upper anchor clamps (8) and copper sheathing (21) clearance fit; Be pressed with two copper sheathing briquettings (10) at horizontal stand (3) by housing screw (9), two copper sheathing briquettings (10) all are pressed on horizontal stand (3) and the copper sheathing (21) simultaneously, one of them copper sheathing briquetting (10) is equipped with clamp locating pin (20), and the vertical locating slot of clamp locating pin on this (20) and upper anchor clamps (8) outside surface cooperates.
6. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: described piezoelectric force transducer (17) is one-way piezoelectric formula power sensor, and range is that 500lbf, sensitivity are that 9.94mV/lbf, natural frequency are 70kHz.
7. the analysis of experiments device of a kind of frictional noise according to claim 1 is characterized in that: the range of described three dimension acceleration sensor (7) is ± 50g, and sensitivity is 100mV/g, and frequency response range is 1Hz-6kHz.
8. the analysis of experiments device of a kind of frictional noise according to claim 1, it is characterized in that: the dynamic range of described acoustic sensor (25) is 15dB-146dB, and sensitivity is 50mV/Pa, and frequency response range is 3.5Hz-20kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220271734XU CN202676281U (en) | 2012-06-11 | 2012-06-11 | Test analytical apparatus for friction noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220271734XU CN202676281U (en) | 2012-06-11 | 2012-06-11 | Test analytical apparatus for friction noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676281U true CN202676281U (en) | 2013-01-16 |
Family
ID=47497180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220271734XU Expired - Fee Related CN202676281U (en) | 2012-06-11 | 2012-06-11 | Test analytical apparatus for friction noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676281U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328538A (en) * | 2017-06-15 | 2017-11-07 | 上海工程技术大学 | A kind of pretension fixing device for vibration-testing |
| CN107991045A (en) * | 2017-11-13 | 2018-05-04 | 西北工业大学 | Line contact slide frictional vibration noise fest platform |
| CN108151992A (en) * | 2017-12-22 | 2018-06-12 | 武汉理工大学 | Disc type friction self-excited vibration experimental bench |
| CN108168689A (en) * | 2017-12-04 | 2018-06-15 | 西北工业大学 | A kind of line contact roll sliding friction vibration noise testing stand and test analysis method |
| CN108180977A (en) * | 2017-12-22 | 2018-06-19 | 武汉理工大学 | The device that vibration state and friction coefficient based on fiber grating measure simultaneously |
| CN112683780A (en) * | 2021-01-15 | 2021-04-20 | 中国汽车工程研究院股份有限公司 | Tension rubber type energy storage mechanism of material friction abnormal sound test bed |
| CN114397006A (en) * | 2022-02-15 | 2022-04-26 | 西南交通大学 | Propeller flow noise measurement system under oscillation and steering motion |
-
2012
- 2012-06-11 CN CN201220271734XU patent/CN202676281U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328538A (en) * | 2017-06-15 | 2017-11-07 | 上海工程技术大学 | A kind of pretension fixing device for vibration-testing |
| CN107328538B (en) * | 2017-06-15 | 2019-10-15 | 上海工程技术大学 | A kind of fixed device of preload for vibration-testing |
| CN107991045A (en) * | 2017-11-13 | 2018-05-04 | 西北工业大学 | Line contact slide frictional vibration noise fest platform |
| CN107991045B (en) * | 2017-11-13 | 2019-06-21 | 西北工业大学 | Line contact slide frictional vibration noise fest platform |
| CN108168689A (en) * | 2017-12-04 | 2018-06-15 | 西北工业大学 | A kind of line contact roll sliding friction vibration noise testing stand and test analysis method |
| CN108151992A (en) * | 2017-12-22 | 2018-06-12 | 武汉理工大学 | Disc type friction self-excited vibration experimental bench |
| CN108180977A (en) * | 2017-12-22 | 2018-06-19 | 武汉理工大学 | The device that vibration state and friction coefficient based on fiber grating measure simultaneously |
| CN108151992B (en) * | 2017-12-22 | 2019-11-26 | 武汉理工大学 | Disc type friction self-excited vibration experimental bench |
| CN112683780A (en) * | 2021-01-15 | 2021-04-20 | 中国汽车工程研究院股份有限公司 | Tension rubber type energy storage mechanism of material friction abnormal sound test bed |
| CN112683780B (en) * | 2021-01-15 | 2024-03-12 | 中国汽车工程研究院股份有限公司 | Tension rubber type energy storage mechanism of material friction abnormal sound test bed |
| CN114397006A (en) * | 2022-02-15 | 2022-04-26 | 西南交通大学 | Propeller flow noise measurement system under oscillation and steering motion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102680083B (en) | Method for testing and analyzing frictional noise and test device for method | |
| CN202676281U (en) | Test analytical apparatus for friction noise | |
| CN101339112B (en) | Machine tool guiding rail friction wear testing machine | |
| CN201133893Y (en) | Multifunctional material surface behaviour tester | |
| CN104142281B (en) | The tangential fretting abrasion test device that a kind of voice coil motor drives | |
| CN103048136A (en) | High and low temperature environment service life testing machine for joint bearing | |
| CN106895972B (en) | A kind of stick-slip experimental rig | |
| CN109443968B (en) | Guide rail friction and wear testing machine and testing method | |
| CN103817562B (en) | The detection method and its detection means of a kind of cutter parameters | |
| CN103994812A (en) | Inherent frequency comprehensive testing platform capable of applying pretightening force | |
| CN110320124A (en) | A kind of reciprocating corrosion fretting apparatus | |
| CN101949752B (en) | Triaxial adaptive dynamic-balance execution device for centrifuger | |
| CN203751831U (en) | Detection device for cutter parameters | |
| CN210173321U (en) | Compact active high-precision force and position compensation device | |
| CN109827899B (en) | Material surface property tester | |
| CN201047820Y (en) | Train air spring torsional pendulum fatigue testing machine | |
| CN208333395U (en) | A kind of groove profile laser planeness detector | |
| CN103557931A (en) | Ultrasound amplitude measuring device and method based on constant force control | |
| CN201259483Y (en) | Friction wear property test apparatus for machine tool guide rail | |
| CN109612864A (en) | A kind of sliding friction fatigue experimental device for rotary bending fatigue machine | |
| CN103115834B (en) | Friction signal acquisition system | |
| CN105115707A (en) | Testing device and testing method for dynamic characteristic of joint curved surface faying surface | |
| CN206369507U (en) | A kind of measurement apparatus for being used to measure revolving body circular runout | |
| CN212409585U (en) | Adjustable measuring head for axial clearance detector | |
| CN102322830B (en) | Fine regulating device for three coordinate measuring machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150611 |
|
| EXPY | Termination of patent right or utility model |