CN109029892A - A kind of working condition simulation experiment system of spring - Google Patents
A kind of working condition simulation experiment system of spring Download PDFInfo
- Publication number
- CN109029892A CN109029892A CN201811128230.0A CN201811128230A CN109029892A CN 109029892 A CN109029892 A CN 109029892A CN 201811128230 A CN201811128230 A CN 201811128230A CN 109029892 A CN109029892 A CN 109029892A
- Authority
- CN
- China
- Prior art keywords
- spring
- working condition
- simulation experiment
- supporting plate
- experiment system
- 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.)
- Pending
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 30
- 230000001133 acceleration Effects 0.000 claims abstract description 51
- 230000014759 maintenance of location Effects 0.000 claims abstract description 16
- 230000004044 response Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 239000011888 foil Substances 0.000 abstract description 8
- 230000005284 excitation Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- ZAKOWWREFLAJOT-CEFNRUSXSA-N D-alpha-tocopherylacetate Chemical compound CC(=O)OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C ZAKOWWREFLAJOT-CEFNRUSXSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of working condition simulation experiment system of spring, including electromagnetic vibration platform (11), the top of the electromagnetic vibration platform (11) is connected by connection table top (10) with a Spring retention features；The Spring retention features are for the fixed spring (6) tested；The electromagnetic vibration platform (11) is used to provide exciting force for the vibration of spring (6).A kind of working condition simulation experiment system of spring disclosed by the invention, it can simulate working condition of the spring in the case where vibrating use environment, spring application excitation reliably small to surface area, that acceleration transducer or foil gauge can not be pasted, and it obtains for measuring data required for spring resonance frequency, to allow user that can further measure the resonant frequency of spring, it is suitble to promote and apply, is of great practical significance.
Description
Technical field
The present invention relates to spring performance verification test technical fields, simulate examination more particularly to a kind of working condition of spring
Check system.
Background technique
Currently, spring generally as the resilient element or vibration damping and vibration isolation element of product come using.Utilize the rebound function of spring
Can, it can play the role of making switch to automatically reset or valve seal；Meanwhile using the vibration damping and vibration isolation function of spring, can subtract
Small dynamic excitation source is transmitted to the vibration on product, or reduces product vibration and be transmitted on surrounding devices.
In the occasion of static environment, the static characteristics of spring are generally only concerned, as static rigidity, compression (or stretching) become
Shape；And under the use environment that there is vibration, what is be typically concerned about is spring composed quality and spring system together with product
Vibration damping and vibration isolation vibration characteristics, such as resonant frequency, effective isolation frequency of system or the vibration isolation efficiency of system of system.
It should be noted that for spring, under the incentive environment with wider vibration frequency band and larger vibration magnitude,
Spring itself can also generate resonance.When spring itself resonates, the vibration of spring can amplify, stability decline, thus shadow
Ring all various service performances such as rebound, sealing, vibration damping, the vibration isolation of product.
Currently, the side of acceleration transducer or foil gauge can be pasted directly on spring for larger-size spring
Formula, then by applying external drive to spring, to obtain the resonant frequency of spring itself.But relatively for size
Small spring, surface area is small, can not paste acceleration transducer or foil gauge, therefore, it is impossible to be accelerated by surface mount
Sensor or foil gauge are spent, and by applying external drive to spring, to obtain the resonant frequency of spring itself.
Therefore, at present there is an urgent need to develop a kind of technology out, can it is reliably small to surface area, acceleration can not be pasted
The spring for spending sensor or foil gauge applies excitation, and obtains for measuring data required for spring resonance frequency, to allow
User can further measure the resonant frequency of spring.
Summary of the invention
In view of this, can be simulated the object of the present invention is to provide a kind of working condition simulation experiment system of spring
Working condition of the spring in the case where vibrating use environment is reliably small to surface area, can not paste acceleration transducer or strain
The spring of piece applies excitation, and obtains for measuring data required for spring resonance frequency, to make user further
The resonant frequency of spring is measured, is suitble to promote and apply, be of great practical significance.
For this purpose, the present invention provides a kind of working condition simulation experiment system of spring, including electromagnetic vibration platform, it is described
The top of electromagnetic vibration platform is connected by connection table top with a Spring retention features；
The Spring retention features are for the fixed spring tested；
The electromagnetic vibration platform is used to provide exciting force for the vibration of spring.
Wherein, the Spring retention features include bottom plate, cylinder, upper flange, adjust bolt, lower supporting plate and upper support
Plate, in which:
The bottom plate is fixedly connected with the top surface of the connection table top；
The end face center position of the bottom plate is provided with a hollow cylinder；
Upper flange is fixedly connected at the top of the cylinder；
The center of the upper flange is threaded with the adjusting bolt of vertical distribution；
Upper flange described in the adjusting bolt-through；
The screw top of the bottom end for adjusting bolt and upper backup pad connects；
Lower supporting plate is arranged at intervals with immediately below the upper backup pad；
The lower supporting plate is connected by a fastening bolt with the bottom plate；
The upper backup pad and lower supporting plate are located at the inside of the cylinder；
The spring is provided between the bottom surface of the upper backup pad and the top surface of lower supporting plate.
Wherein, the top surface of the upper backup pad has recessed tapped blind hole, the tapped blind hole and the bottom for adjusting bolt
End is threadedly coupled；
The bottom center position of the upper backup pad has circular first spring retainer groove, the top position of the spring
Inside the first spring retainer groove；
The end face center position of the lower supporting plate has circular second spring limiting groove, the bottom position of the spring
Inside the second spring limiting groove.
Wherein, the middle part of the lower supporting plate has a counter sink, and the top of the counter sink and second spring limit
The bottom surface of groove is connected；
The counter sink is used to be screwed into the bolt head of the fastening bolt；
When fastening bolt is screwed into the counter sink, the top surface of the bolt head of the fastening bolt is limited lower than second spring
The bottom surface of groove.
Wherein, the side of the cylinder has the operational observations mouth being axially distributed along cylinder.
Wherein, the operational observations mouth is elongated, and plan view shape is sector.
It wherein, further include dynamic force snesor and acceleration transducer, in which:
The dynamic force snesor is located at the underface of the lower supporting plate, for measuring the vibratory response data of spring；
The fastening bolt is connected after sequentially passing through lower supporting plate and dynamic force snesor from top to bottom with the bottom plate；
The top surface of the connection table top is fixedly installed the acceleration transducer, and the acceleration transducer is for obtaining
The acceleration of electromagnetic vibration platform output.
Wherein, further include data collecting instrument, be connected respectively with dynamic force snesor and acceleration transducer, for acquiring
The vibratory response data for the spring that dynamic force sensor measuring obtains, and electromagnetic type vibration acquired in acquisition acceleration transducer
The acceleration of dynamic platform output.
It wherein, further include controller and power amplifier, in which:
Controller is connected with power amplifier, and for the control according to user, output is shaken for drive control electromagnetic type
The driving signal of dynamic platform is to power amplifier；
Power amplifier is connected with electromagnetic vibration platform, for that will be used for the driving of drive control electromagnetic vibration platform
After signal amplification, it is sent to electromagnetic vibration platform；
Accordingly, electromagnetic vibration platform is connect with power amplifier, defeated for receiving the driving signal of power amplifier
Exciting force out.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the invention proposes a kind of springs
Working condition simulation experiment system, working condition of the spring in the case where vibrating use environment can be simulated, reliably to surface
Area is small, can not paste acceleration transducer or the spring of foil gauge applies excitation, and obtains for measuring spring resonance frequency
Required data are suitble to promote and apply, have great life to allow user that can further measure the resonant frequency of spring
Produce practice significance.
Detailed description of the invention
Fig. 1 is a kind of overall structure simplified schematic diagram of the working condition simulation experiment system of spring provided by the invention；
Fig. 2 is the three-dimensional knot of Spring retention features in a kind of working condition simulation experiment system of spring provided by the invention
Structure enlarged diagram；
Fig. 3 is the cross-section structure of the upper backup pad in a kind of working condition simulation experiment system of spring provided by the invention
Schematic diagram；
Fig. 4 is the stereochemical structure of the lower supporting plate in a kind of working condition simulation experiment system of spring provided by the invention
Schematic diagram；
Fig. 5 is the cross-section structure of the lower supporting plate in a kind of working condition simulation experiment system of spring provided by the invention
Schematic diagram；
In figure, 1 it is upper flange, 2 is cylinder, 3 is bottom plate, 4 adjusting bolts, 5 is upper backup pad, 6 is spring, 7 is lower branch
Fagging, 8 be dynamic force snesor, 9 be data collecting instrument, 10 be connection table top, 11 be electromagnetic vibration platform, 12 be acceleration pass
Sensor, 13 be controller, 14 be power amplifier.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to Fig. 1 to Fig. 5, a kind of working condition simulation experiment system of spring provided by the invention, including electromagnetic type vibration
The top of dynamic platform 11, the electromagnetic vibration platform 11 is connected by connection table top 10 with a Spring retention features；
The Spring retention features are for the fixed spring 6 tested；
The electromagnetic vibration platform 11 is used to provide exciting force (specially wide band exciting force) for the vibration of spring 6.
It should be noted that connection table top 10, is fixed on electromagnetic vibration platform 11, thereon connecting spring fixed mechanism,
For the exciting force of electromagnetic vibration platform 11 to be passed to Spring retention features.Spring retention features are used for fixed spring, and mould
The real work operating condition of quasi- spring.
In the present invention, in specific implementation, the Spring retention features include bottom plate 3, cylinder 2, upper flange 1, adjust spiral shell
Bolt 4, lower supporting plate 7 and upper backup pad 5, in which:
The bottom plate 3 is fixedly connected with the top surface of the connection table top 10；
The end face center position of the bottom plate 3 is provided with a hollow cylinder 2；
The top of the cylinder 2 is fixedly connected with upper flange 1；
The center of the upper flange 1 is threaded with (the specially center of upper flange of adjusting bolt 4 of vertical distribution
Position is provided with a threaded hole, adjusts bolt 4 and is threadedly coupled the threaded hole)；
The adjusting bolt 4 runs through the upper flange 1；
The bottom end for adjusting bolt 4 is connect with the screw top of upper backup pad 5；
The underface of the upper backup pad 5 is arranged at intervals with lower supporting plate 7；
The lower supporting plate 7 is connected by a fastening bolt with the bottom plate 3；
The upper backup pad 5 and lower supporting plate 7 are located at the inside of the cylinder 2；
The spring 6 is provided between the bottom surface of the upper backup pad 5 and the top surface of lower supporting plate 7.
It should be noted that for the present invention, adjust bolt 4 by turning, can be moved up in vertical direction or
Upper backup pad 5 is moved down, so as to change the relative distance between upper backup pad 5 and lower support change 7, to play adjusting
The effect of the decrement (or amount of tension) of spring 6.
In specific implementation, the top surface of the upper backup pad 5 has recessed tapped blind hole 41, the tapped blind hole 41 and tune
The bottom end for saving bolt 4 is threadedly coupled；
The bottom center position of the upper backup pad 5 has circular first spring retainer groove 61, the top of the spring 6
Portion is located at 61 the inside of the first spring retainer groove；
The end face center position of the lower supporting plate 7 has circular second spring limiting groove 62, the bottom of the spring 6
Portion is located at 62 the inside of second spring limiting groove.
It should be noted that the first spring retainer groove 61 is matched with the top of spring 6, shape, size and spring 6
Shape, the corresponding matching of size；Second spring limiting groove 62 is matched with the bottom of spring 6, shape, size and spring
6 shape, the corresponding matching of size.Therefore, under the cooperation of the first spring retainer groove 61 and second spring limiting groove 62,
It is capable of the radial motion of limited spring 6.
In specific implementation, the side of the cylinder 2 has the operational observations mouth 20 being axially distributed along cylinder 2.The operation
The setting of observation panel 20, convenient for the observation of adjustment and spring vibration state to spring trystate.
In specific implementation, the operational observations mouth 20 is elongated, and plan view shape is sector.
In specific implementation, the top surface of the bottom plate 3 and the connection table top 10 is bolted to connection (i.e. rigid to connect
It connects)；
The end face center position of the bottom plate 3 is fixedly connected with the bottom of cylinder 2 by bolt and (is rigidly connected)；
The top of the cylinder 2 is bolted to connection upper flange 1.
In the present invention, in specific implementation, the working condition simulation experiment system of spring provided by the invention, further includes moving
State force snesor 8 and acceleration transducer 12, in which:
The dynamic force snesor 8 is located at the underface of the lower supporting plate 7, for measuring the vibratory response number of spring 6
According to (such as the parameters such as amplitude and vibration frequency)；
The fastening bolt is connected after sequentially passing through lower supporting plate 7 and dynamic force snesor 8 from top to bottom with the bottom plate 3
It connects；
The top surface of the connection table top 10 is fixedly installed the acceleration transducer 12, and the acceleration transducer 12 is used
In the acceleration for obtaining the output of electromagnetic vibration platform 11, to may further be used to vibrate closed-loop control and acceleration responsive
Measurement；Specific structure can be with are as follows: the bolt between the bottom plate 3 and the top surface of the connection table top 10 for connection, also simultaneously
It is fixedly connected with the acceleration transducer 12 (being rigidly connected), acceleration transducer 12 described in bolt-through.
In specific implementation, the middle part of the lower supporting plate 7 has a counter sink 42, the top of the counter sink 42 and the
The bottom surface of two spring retainer grooves 62 is connected；
The counter sink 42 is used to be screwed into the bolt head of the fastening bolt；
When fastening bolt is screwed into the counter sink 42, the top surface of the bolt head of the fastening bolt is limited lower than second spring
The bottom surface of position groove 62.Therefore, the bolt head that fastening bolt can be effectively prevented contacts and interferes with the generation of spring 6.
In the present invention, in specific implementation, the working condition simulation experiment system of spring provided by the invention further includes control
Instrument 13 and power amplifier 14 processed, in which:
Controller 13, is connected with power amplifier 14 and (passes through data line), for (specifically can be with according to the control of user
According to preset exciter test condition), driving signal of the output for drive control electromagnetic vibration platform 11 is (specially electric
Press signal) to power amplifier 14；
Power amplifier 14, is connected with electromagnetic vibration platform 11 and (passes through data line), for that will be used for drive control electricity
After driving signal (specially voltage signal) amplification of magnetic-type shake table 11, it is sent to electromagnetic vibration platform 11, to drive electricity
Magnetic-type shake table 11 generates exciting force；
Accordingly, electromagnetic vibration platform 11, connect with power amplifier 14 and (passes through data line), for receiving power amplification
The driving signal of device 14 exports exciting force.
In the present invention, in specific implementation, the working condition simulation experiment system of spring provided by the invention further includes number
According to Acquisition Instrument 9, it is connected respectively with dynamic force snesor 8 and acceleration transducer 12, is measured for acquiring dynamic force snesor 8
The vibratory response data of the spring 6 of acquisition, and the output of electromagnetic vibration platform 11 acquired in acquisition acceleration transducer 12
Then acceleration is analyzed, the resonant frequency of spring 6 is obtained.
For data collecting instrument 9, it should be noted that during the test, data collecting instrument 9 collects acceleration simultaneously
The time signal data (referred to as time domain data) of sensor 12 and dynamic force snesor 8 are denoted as T1 (corresponding acceleration sensing respectively
The time domain data of device 12) and T2 (time domain data of corresponding dynamic force snesor 8)；
Then, time domain data is carried out Fast Fourier Transform (FFT) by data collecting instrument 9, and time domain data is converted to frequency domain number
According to being denoted as G1 (f) (the auto-correlation frequency domain data of 12 signal of acceleration transducer) and G2 (f) (8 signal of dynamic force snesor respectively
Auto-correlation frequency domain data).
Then, data collecting instrument 9 calculates G1 (f)/G2 (f), obtains transfer curve,
Then, the difference of the phase of the calculating of data collecting instrument 9 T1 and the phase of T2 in frequency domain, obtains phase and frequency
Curve,
In specific implementation, data collecting instrument 9 can calculate according to the following formula coherent function:
R=G12 (f)2/G1(f)G2(f)；
Wherein: R is coherent function, and numerical value takes 0~1；G12 (f) is the number of acceleration transducer 12 and dynamic force snesor 8
According to cross-correlation frequency domain data；
It should be noted that working as the corresponding frequency of peak value of transfer curve, the corresponding phase difference in phase curve
Be 90 °, and simultaneously the value of coherent function R be greater than 0.9 when, determine this frequency for the resonant frequency of spring.
In specific implementation, above calculating process, data collecting instrument 9 can be arranged according to preparatory program, automatic to carry out.
It should be noted that acceleration transducer, controller 13 and power amplifier 14 form close together for the present invention
Ring control system.Wherein, controller 13 is according to prespecified exciter test condition, and (driving signal is output drive signal
Voltage signal is used for drive control electromagnetic vibration platform 11) to power amplifier 14, power amplifier 14 amplifies the signal
Afterwards, output is to electromagnetic vibration platform 11, so that electromagnetic vibration platform 11 be driven to generate vibration, acceleration transducer 12 passes through measurement
The acceleration signal that electromagnetic vibration platform 11 exports, and controller 14 is fed back to, controller 14 is by comparing feedback signal and drive
Dynamic signal, to correct exported driving signal, until the vibration that electromagnetic vibration platform 11 generates meets exciter test condition
Tolerances.
In the present invention, in specific implementation, the electromagnetic vibration platform 11 can be any one electromagnetic vibration platform, example
Such as can for Beijing Space Xi Er measuring technology Co., Ltd production model MPA409/M437A/GT800M shake table,
The shake table has direct coupled type electric vibration experiment.
In the present invention, in specific implementation, the data collecting instrument 9 can be any one data with above functions
Acquisition Instrument, such as can be the data acquisition of the model TST5912 of Jiangsu Stettlen electronic equipment manufacturing Co., Ltd production
Analyzer, with dynamic signalling analysis system
In the present invention, in specific implementation, the controller 13 can be the type of Hangzhou Yiheng Technologies Co., Ltd.'s production
Number be ECON VT-9016 vibration controller.
In the present invention, in specific implementation, the power amplifier 14 can be limited for Beijing Space Xi Er measuring technology
The power amplifier of the model MPA409 of company's production, is intelligent switch power amplifirer.
In the present invention, in specific implementation, the dynamic force snesor 8 can be any one dynamic force snesor, example
It can be such as Jiangsu Lianneng Electronic Technology Co., Ltd.'s production, model CL-YD-312A force snesor, be a kind of pressure
Electric-type force snesor.
In the present invention, in specific implementation, the acceleration transducer 12 can be any one acceleration transducer, example
It can be such as the acceleration transducer of the model BW13100 of Shanghai Biao Zhi Electronic Science and Technology Co., Ltd. production, i.e. IEPE low-resistance
Reactance voltage exports universal acceleration transducer.
For the present invention, it should be noted that by data collecting instrument, acceleration transducer and dynamic force snesor together group
At measuring system, the dynamic force-responsive that the acceleration responsive and spring vibration that can be used for measuring shake table generate, by dividing
Analyse the response data of measurement, the oscilating characteristic and resonant frequency of available spring；
It should be noted that by bottom plate 3, cylinder 2, upper flange 1, adjusting bolt 4,7 and of lower supporting plate for the present invention
Upper backup pad 5 etc. together constitutes Spring retention features, shown in Figure 2.Wherein, the underface of lower supporting plate is dynamic force biography
Lower supporting plate and dynamic force snesor are securely fixed in the center of bottom plate, spring using a fastening bolt by sensor together
It is fixed between upper backup pad and lower supporting plate, adjusts bolt and securely connect with upper backup pad by screw thread, adjust bolt and fix
On the tapped through hole of upper flange, rigid frame is made of together upper flange, cylinder and bottom plate, so that the fixation for spring mentions
For stable basis.
In addition, for the present invention, bolt 4 can be adjusted by turning, adjustable upper backup pad 5 and lower supporting plate 7 it
Between relative distance, and then the decrement (or amount of tension) of adjustable spring 6, spring is different so as to realizing simulation makes
Realize simulation spring in the case where vibrating use environment when electromagnetic vibration platform 11 is applied with vibrational excitation to spring with operating condition
Working condition.
Scientific and reasonable for structure based on above technical scheme it is found that for the present invention, function is reliable, can simulate spring
Real load operating condition in the case where vibrating use environment, for exploring vibration characteristics of the spring under applying working condition.Meanwhile it can be with
It is acted on by the mutual cooperation of electromagnetic vibration platform, data collecting instrument, dynamic force snesor and acceleration transducer, measures bullet
The vibratory response of spring can measure to obtain the oscilating characteristic and resonant frequency of the spring under regulation operating condition, measurement result
Accurately.The measurement for realizing spring resonance frequency, can solve the problems, such as that its resonant frequency can not be measured compared with small spring, while this is
System has both certain versatility, is applicable to various sizes of spring, also analog goes out the various real work operating conditions of spring.This
Invention can obtain oscilating characteristic and resonant frequency of the spring under regulation operating condition with precise measurement.
For the working condition simulation experiment system of spring provided by the invention, process is specifically tested, may include
Following steps:
1, dynamic force snesor 8 and lower supporting plate 7 are connected at 3 center of bottom plate；
2, cylinder 2 is fixed on bottom plate 3, and the lower end surface of spring 6 is placed in circular the of the top of lower supporting plate 7
In two spring retainer grooves 62；
3, bolt 4 being adjusted to be screwed into the screwed hole of centre of upper flange 1, upper backup pad 5 is screwed in the end for adjusting bolt 4,
Then upper flange 1 is fixed on cylinder 2, turns and adjust bolt 4, the upper surface of spring 6 is made to be located at the circular of upper backup pad
In first spring retainer groove 61；
4, it turns and adjusts bolt 4, adjust the relative distance between upper backup pad 5 and lower supporting plate 7, spring 6 is made to be in examination
Test defined compression (or stretching) size.So far, spring fitting device assembly is completed；
5, connection table top 10 is fixed on electromagnetic vibration platform 11, and connects electromagnetic vibration platform 11,13 and of controller
Power amplifier 14；
6, Spring retention features are fixed on connection table top 10 by bottom plate 3, in the bolt of bottom plate 3 and connecting platform 10
Paste acceleration transducer 12 in junction；
7, acceleration transducer 12 is connect with controller 13 and data collecting instrument 9, dynamic force snesor 8 is adopted with data
Collect instrument 9 to connect；
8, vibration test condition as defined in being arranged on controller 13, is arranged data acquisition parameters on data collecting instrument 9,
Commissioning device is to normal；
9, controller 13, power amplifier 14, monitoring vibration controlling curve, when vibration reaches rated condition and control are opened
After stabilization, turn-on data Acquisition Instrument 9 acquires the response signal of acceleration responsive signal and dynamic force snesor；
10, it according to the acceleration responsive signal of acquisition and dynamic force snesor response signal, obtains transfer curve and (rings
The ratio of induction signal and input signal), phase curve and coherent function (correlation of response signal and input signal) curve,
By analyzing the resonant frequency for determining spring in the case where providing operating condition of test.
It is and existing based on the above-mentioned technical proposal it is found that working condition simulation experiment system for spring provided by the invention
There is technology to compare, has the advantage that
1, pilot system provided by the invention, structure is simple, and assembly method is reliable, and there are fan-shaped operational observations for cylinder
Mouthful, facilitate the adjustment of spring trystate and the observation of spring vibration state；
2, pilot system provided by the invention, with preferable versatility, by adjusting the size of spring fitting device,
It is applicable to the resonant frequency measurement of various springs；
3, in pilot system provided by the invention, spring vibration response is measured using dynamic force snesor, is not needed
Be fixed on spring body, avoid influence of the quality of sensor to spring resonance frequency measurement result, at the same also solve compared with
Small-sized spring is unable to measure the problem of resonant frequency due to that can not paste acceleration transducer or foil gauge.
4, pilot system provided by the invention, in the fixation to spring, using adjustable apparatus, it can be achieved that spring
The adjustment of decrement (or amount of tension) provides effective method to simulate the various applying working conditions of spring.
5, for the present invention, it can use the time domain data that measurement obtains, processing obtains transfer curve (response letter
Ratio number with input signal), with reference to the correlation of response signal and input signal, the final resonance frequency for determining spring
Rate, so that the measurement result of resonant frequency is more acurrate.
In conclusion compared with prior art, a kind of working condition simulation experiment system of spring provided by the invention,
It can simulate working condition of the spring in the case where vibrating use environment, reliably small to surface area, can not paste acceleration biography
The spring of sensor or foil gauge applies excitation, and obtains for measuring data required for spring resonance frequency, to allow user
The resonant frequency of spring can be further measured, is suitble to promote and apply, be of great practical significance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of working condition simulation experiment system of spring, which is characterized in that including electromagnetic vibration platform (11), the electromagnetism
The top of formula shake table (11) is connected by connection table top (10) with a Spring retention features；
The Spring retention features are for the fixed spring (6) tested；
The electromagnetic vibration platform (11) is used to provide exciting force for the vibration of spring (6).
2. the working condition simulation experiment system of spring as described in claim 1, which is characterized in that the Spring retention features
Including bottom plate (3), cylinder (2), upper flange (1), adjust bolt (4), lower supporting plate (7) and upper backup pad (5), in which:
The bottom plate (3) is fixedly connected with the top surface of connection table top (10)；
The end face center position of the bottom plate (3) is provided with a hollow cylinder (2)；
Upper flange (1) is fixedly connected at the top of the cylinder (2)；
The center of the upper flange (1) is threaded with the adjusting bolt (4) of vertical distribution；
The adjusting bolt (4) runs through the upper flange (1)；
The bottom end for adjusting bolt (4) is connect with the screw top of upper backup pad (5)；
Lower supporting plate (7) are arranged at intervals with immediately below the upper backup pad (5)；
The lower supporting plate (7) is connected by a fastening bolt with the bottom plate (3)；
The upper backup pad (5) and lower supporting plate (7) are located at the inside of the cylinder (2)；
The spring (6) are provided between the bottom surface of the upper backup pad (5) and the top surface of lower supporting plate (7).
3. the working condition simulation experiment system of spring as claimed in claim 2, which is characterized in that the upper backup pad (5)
Top surface have recessed tapped blind hole (41), the tapped blind hole (41) with adjusting bolt (4) bottom end be threadedly coupled；
The bottom center position of the upper backup pad (5) has circular first spring retainer groove (61), the spring (6)
Top is located inside the first spring retainer groove (61)；
The end face center position of the lower supporting plate (7) has circular second spring limiting groove (62), the spring (6)
Bottom is located inside the second spring limiting groove (62).
4. the working condition simulation experiment system of spring as claimed in claim 3, which is characterized in that the lower supporting plate (7)
Middle part have a counter sink (42), the top of the counter sink (42) is connected with the bottom surface of second spring limiting groove (62)
It is logical；
The counter sink (42) is used to be screwed into the bolt head of the fastening bolt；
When fastening bolt is screwed into the counter sink (42), the top surface of the bolt head of the fastening bolt is limited lower than second spring
The bottom surface of groove (62).
5. the working condition simulation experiment system of spring as claimed in claim 2, which is characterized in that the side of the cylinder (2)
Face has the operational observations mouth (20) being axially distributed along cylinder (2).
6. the working condition simulation experiment system of spring as claimed in claim 5, which is characterized in that the operational observations mouth
(20) elongated, plan view shape is sector.
7. the working condition simulation experiment system of spring as claimed in claim 2, which is characterized in that further include dynamic force sensing
Device (8) and acceleration transducer (12), in which:
The dynamic force snesor (8) is located at the underface of the lower supporting plate (7), for measuring the vibratory response of spring (6)
Data；
The fastening bolt sequentially pass through from top to bottom lower supporting plate (7) and dynamic force snesor (8) afterwards with the bottom plate (3) phase
Connection；
The top surface of connection table top (10) is fixedly installed the acceleration transducer (12), the acceleration transducer (12)
For obtaining the acceleration of electromagnetic vibration platform (11) output.
8. the working condition simulation experiment system of spring as claimed in claim 7, which is characterized in that further include data collecting instrument
(9), it is connected respectively with dynamic force snesor (8) and acceleration transducer (12), for acquiring dynamic force snesor (8) measurement
The vibratory response data of the spring (6) of acquisition, and electromagnetic vibration platform (11) acquired in acquisition acceleration transducer (12)
The acceleration of output.
9. such as the working condition simulation experiment system of spring described in any item of the claim 1 to 8, which is characterized in that also wrap
Include controller (13) and power amplifier (14), in which:
Controller (13) is connected with power amplifier (14), and for the control according to user, output is used for drive control electromagnetism
The driving signal of formula shake table (11) gives power amplifier (14)；
Power amplifier (14) is connected with electromagnetic vibration platform (11), for that will be used for drive control electromagnetic vibration platform
(11) after driving signal amplification, electromagnetic vibration platform (11) are sent to；
Accordingly, electromagnetic vibration platform (11) are connect, for receiving the driving of power amplifier (14) with power amplifier (14)
Signal exports exciting force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128230.0A CN109029892A (en) | 2018-09-27 | 2018-09-27 | A kind of working condition simulation experiment system of spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128230.0A CN109029892A (en) | 2018-09-27 | 2018-09-27 | A kind of working condition simulation experiment system of spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109029892A true CN109029892A (en) | 2018-12-18 |
Family
ID=64618233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128230.0A Pending CN109029892A (en) | 2018-09-27 | 2018-09-27 | A kind of working condition simulation experiment system of spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109029892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504120A (en) * | 2021-06-09 | 2021-10-15 | 安徽珂洁日用品有限公司 | Stainless steel wire strength detection equipment based on elasticity test mechanism |
| CN114518222A (en) * | 2020-11-18 | 2022-05-20 | 西南交通大学 | Novel spring resonance test bed |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666730A (en) * | 2009-09-14 | 2010-03-10 | 中国人民解放军海军工程大学 | Equipment for testing vibration performance of air spring and method of using the same for testing |
| CN107421729A (en) * | 2017-08-11 | 2017-12-01 | 南京理工大学 | A kind of MR elastomer vibration isolator dynamic performance testing system |
| CN208953229U (en) * | 2018-09-27 | 2019-06-07 | 天津航天瑞莱科技有限公司 | A kind of working condition simulation experiment system of spring |
-
2018
- 2018-09-27 CN CN201811128230.0A patent/CN109029892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666730A (en) * | 2009-09-14 | 2010-03-10 | 中国人民解放军海军工程大学 | Equipment for testing vibration performance of air spring and method of using the same for testing |
| CN107421729A (en) * | 2017-08-11 | 2017-12-01 | 南京理工大学 | A kind of MR elastomer vibration isolator dynamic performance testing system |
| CN208953229U (en) * | 2018-09-27 | 2019-06-07 | 天津航天瑞莱科技有限公司 | A kind of working condition simulation experiment system of spring |
Non-Patent Citations (1)
| Title |
|---|
| 雷镭: "汽车悬架中凸形螺旋弹簧刚度计算与试验研究", 机械设计》, pages 15 - 17 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114518222A (en) * | 2020-11-18 | 2022-05-20 | 西南交通大学 | Novel spring resonance test bed |
| CN113504120A (en) * | 2021-06-09 | 2021-10-15 | 安徽珂洁日用品有限公司 | Stainless steel wire strength detection equipment based on elasticity test mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109029892A (en) | A kind of working condition simulation experiment system of spring | |
| US4928538A (en) | Monitoring tension in an elongate flexible member | |
| CN205902077U (en) | Loudspeaker body measuring device | |
| CN208953229U (en) | A kind of working condition simulation experiment system of spring | |
| CN103543012A (en) | Rolling bearing stiffness testing experiment device and experiment method thereof | |
| KR101403030B1 (en) | High frequency fatigue testing apparatus | |
| CN105445568B (en) | Piezoelectric membrane electromechanical properties experimental rig | |
| US20050183493A1 (en) | Apparatus and methods for dynamically pressure testing an article | |
| JP2017507785A (en) | Ultrasonic machining device with force sensor | |
| CN104568271A (en) | Detection device for elasticity of piston ring | |
| CN110849314B (en) | Dynamic strain calibration method with continuously adjustable frequency | |
| CN201680810U (en) | Comprehensive testing device for force and displacement | |
| CN105043696A (en) | Device for testing rigidity and damping of aircraft engine vibration isolator | |
| CN113155389B (en) | Device and method for measuring and evaluating vibration transmissivity of glove palm | |
| CN207423522U (en) | Button fatigue tester | |
| JPS57132036A (en) | Measuring device of dynamic spring constant | |
| CN210664960U (en) | Air spring static vertical rigidity testing device | |
| WO2023198219A1 (en) | Multi-frequency band synchronous amplification adjustable vibration amplification apparatus | |
| CN203414350U (en) | Fatigue compressive deformation performance tester for shoe sole | |
| CN108226289A (en) | The device and test specimen test method of acoustic emission probe and microseism probe are installed simultaneously | |
| CN107249164B (en) | Audition clamp device for electroacoustic transducer | |
| CN105547687A (en) | Damping coefficient measurement device of large-damping dynamic damper | |
| CN203629796U (en) | Waveform spring precompression tester | |
| CN112887889A (en) | Bone conduction type hearing aid testing device | |
| CN108254661B (en) | Hardware discharge voltage test system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181218 |
|
| WD01 | Invention patent application deemed withdrawn after publication |