CN203337486U - Fatigue test system - Google Patents
Fatigue test system Download PDFInfo
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- CN203337486U CN203337486U CN2013203169440U CN201320316944U CN203337486U CN 203337486 U CN203337486 U CN 203337486U CN 2013203169440 U CN2013203169440 U CN 2013203169440U CN 201320316944 U CN201320316944 U CN 201320316944U CN 203337486 U CN203337486 U CN 203337486U
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Abstract
The utility model discloses a fatigue test system which comprises a giant magnetostriction-based micro-displacement driver, an inner backflow area differential hydraulic stroke amplifier, a displacement sensor, a clamp and a data line, wherein the giant magnetostriction-based micro-displacement driver comprises a giant magnetostrictive material rod (GMM rod), a coil wound on the GMM rod, and an output rod installed inside the GMM rod, the inner backflow area differential hydraulic stroke amplifier comprises a driving piston, a liquid medium, an output piston rod and a backflow hole formed in the end part of the output piston rod, and a power amplifier, an A/D (Analogue to Digital) converter and a computer are sequentially connected between the giant magnetostriction-based micro-displacement driver and the displacement sensor. The fatigue test system disclosed by the utility model is short in response time, so that the test time is greatly shortened and the test efficiency is greatly improved. The inner backflow area differential hydraulic stroke amplifier is not provided with a pump and a control element, so that the manufacturing cost is greatly lowered, and the fatigue test system is simple in structure and convenient to maintain.
Description
Technical field
The utility model relates to a kind of test macro, is specifically related to a kind of fatigue test system.
Background technology
Economic fast development has driven burning the wind of the communications industry, and the series of factors such as the outward appearance of product, serviceable life, price have determined the competitive power of commodity.For example: the bending that the built-in data telecommunication line of notebook computer and mobile phone need to repeat, and the single line material is entwined by several fine rules usually, skin wraps up with insulated hull, data line is subject to high-cycle fatigue destruction and causes the fracture of internal single cable or many fine rules to produce and to have a strong impact on the reliability of signal transmission, therefore this class data line need to be used test fatigue lifetime that HF fatigue testing machine is carried out the high frequency short arc to it, guarantees the bend-resistance ability of product.The examination of the bend-resistance performance of data line routine is to adopt data tape weight to carry out the bending times test of 90 °, this test method and device can not be reflected in the fatigue behaviour under high frequency short arc application conditions comprehensively, simultaneously larger with the practical application condition difference, test figure can not be assessed by the sex work reliably and with long-term under high frequency short arc condition data line.
The fatigue tester that possession share proportion is larger on market at present mainly contains hydraulic servo type, electromagnetic type and mechanical type several types.Wherein the hydraulic servo type fatigue tester is a kind of more advanced proving installation, but price is high, and under the low frequency operation state, the large cost of power consumption is high.Electromagnetic type torture test unit frequency is high, is mainly used in the fatigue behaviour performance test of material preferably.Mechanical Fatigue Test Machine is applicable to the torture test not high to frequency requirement, and the little cost of power is low.But Mechanical Fatigue Test Machine, numerous and diverse for the decision condition of off-test in the past, for testing termination order reaction slowly, and export the deficiencies such as the load scope is less.
In the last few years, the Sytronix hybrid power system that BOSCH-REXROTH is released has also obtained application in the bending fatigue tester, and its system is on original type, and the design of hydraulic part is changed a little, change original pump into variable output pump, and be equipped with proportional controller and adjustable frequency motor.The characteristic that the bend-resistance fatigue tester that France produces mainly utilizes servomotor to respond fast in time, shorten the test duration.Domestic the bend-resistance fatigue tester has also been done to a series of research, the wire high-cycle fatigue proving installation of China Aerospace Science and Technology Corporation's development configures dissimilar linear electric motors by regulating hold-down ring and packing ring, thereby frequency and the Oscillation Amplitude of test can be changed along with the variation of input voltage and frequency.
The fatigue tester of Zhangjiagang, Jiangsu Province a company development, structure comprises support, be fixed with frame on support, frame comprises two columns, be provided with a cross bar between two columns, be fixed with actuator on cross bar, the bottom of actuator is provided with motion bar, the bottom of motion bar is connected with an end of lever, the other end of lever matches with test fixture, is provided with a fulcrum between the two ends of lever, utilizes lever principle, to test stroke and effectively zoom in or out, thereby make the test specification of fatigue tester wider.The fatigue tester of the method development can be regulated test specification, has made up the narrower shortcoming of traditional fatigue tester test specification.
The multi-parameter adjustable cable fretting fatigue device of Institutes Of Technology Of Changsha's development is mainly that the eccentric wheel by being arranged on motor has vibrated test with the excitement that is fixed on the mobile relative motion to cock wheel under suspension clamp.This research can make wire to be measured be controlled at micron dimension at the amplitude in wire clamp exit, during wire clamp generation fine motion, can carry out micro-positioning regulators to parameters such as amplitude, frequency, load, angles, make up in the past and can only carry out to wire rod the shortcoming of macroscopical violent oscillatory motion test.
The micro fatigue testing machine of Nanjing Aero-Space University's research and development is mainly used to analog conducting wire one end and fixes the periodically situation of reciprocally swinging of an end, for the swing fatigue behaviour of test lead.The mechanical driving device of testing machine is transformed into the reciprocally swinging of balance around dead axle by the rotation of motor, makes the distance between price fixing on the balance device and Moving plate can realize continuous adjusting within the specific limits.This device has been installed photoelectric counter and has been used for recording the wire number of oscillations simultaneously, the damage status of data acquisition system (DAS) Real-Time Monitoring test lead.This utility model experimental provision, structure is simpler, easy to process, can carry out many group tests simultaneously, realizes the stepless control to test frequency.
The fatigue tester of Hangzhou a company development needs manpower to pull script, artificial judgement, and the artificial detecting pattern calculated is changed into by count control device and is controlled and the analysis position stroke, thus the test performance of judgment means.This research has not only improved detection efficiency, and test result is clearer and more definite reliable.
The CF-20 molded line fatigue bending machine of Beijing Research & Design Institute of Rubber Industry's exploitation, drive system adopts MAT's AC servo motor, and adopts the synchronous belt transmission, and the rotating speed control accuracy is high, stable, and noise is little.The deflector roll that circumnutates rotates and moves back and forth up and down position and adopted rolling bearing and line slideway auxiliary, under suitable lubricating condition, goes slick.Simultaneously, every line counterweight all has an approach switch below, and in test, during certain root thread breakage, corresponding approach switch i.e. induction automatically, and the mean value of this group test wire fatigue period is preserved and calculated to every line fatigue period of computer recording automatically.
SCM Based automatic control system has also obtained application in fatigue tester, the fatigue tester of Changchun a company development mainly is divided into machinery and observing and controlling two large divisions, the observing and controlling part is mainly at sweep, resistance strain sensor to be installed to change the moment of flexure signal into electric signal, then send into A/D converter after amplifier amplifies, offer single-chip microcomputer after being converted to digital signal.Single-chip microcomputer compares data measured and the data of having inputted, and according to comparative result, by D/A converter, controls the rotating speed that frequency converter is regulated motor, changes corresponding parameter.Take single-chip microcomputer as control core has formed a closed loop measurement and control system that typical band feeds back, make whole adjustment process realize automatic control, met the requirement to the bending fatigue test.
According to current present Research, important indicator simple in structure, that the test duration is short, displacement control accurately becomes measurement data line bend-resistance fatigue tester.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of fatigue test system, of giant magnetostrictive material, make, there is high capacity usage ratio, the low leakage and noiseless, the output displacement of perception at any time control system in the computer system of fatigue test device, in adopting, the backflow stroke multiplier meets the testing requirement of large displacement simultaneously.
The apprizing system of sample treatment plant, for realizing above-mentioned technical purpose, reaches above-mentioned technique effect, and the utility model is achieved through the following technical solutions:
A kind of fatigue test system, comprise based on ultra-magnetostriction microdisplacement driver, interior backflow area difference hydrodynamic pressure stroke multiplier, displacement transducer, fixture and data line, describedly based on ultra-magnetostriction microdisplacement driver, comprise the GMM rod, be wrapped in the coil on described GMM rod and be arranged on the inner take-off lever of described GMM rod, described interior backflow area difference hydrodynamic pressure stroke multiplier comprises active piston, liquid medium, the output piston bar, be arranged on the return port of described output piston, described interior backflow area difference hydrodynamic pressure stroke multiplier inwall is equipped with back-moving spring, described take-off lever is connected with described active piston, described output piston bar end is equipped with described displacement transducer, described data line is connected with described output piston bar by described fixture, described based between ultra-magnetostriction microdisplacement driver and described displacement transducer, being connected with amplifirer in turn, A/D converter and computing machine.
Further, between the inboard wall of cylinder block of the large end of described output piston bar and described interior backflow area difference hydrodynamic pressure stroke multiplier without seal request.
Further, described output piston bar end also is equipped with counter.
For the utility model, by analyzing the GMM operating characteristic, if select the GMM rod of certain specification, as to choose GMM rod diameter be 11.8mm, length is 50mm, when giving the precompression that loads 150N based on ultra-magnetostriction microdisplacement driver, when coil passes to the electric current of 1.6A, there is the output of optimal linear displacement based on ultra-magnetostriction microdisplacement driver, and more than the output displacement scope can reach 40 um.Now getting output displacement is 200um, and the speed of the take-off lever based on ultra-magnetostriction microdisplacement driver can be calculated according to formula (1), and the output piston speed of interior backflow area difference hydrodynamic pressure stroke multiplier is calculated as formula (2-4):
Due to the application of technique scheme, the beneficial effects of the utility model are:
1, the test macro that the utility model drives based on GMM, the response time is short, and simultaneously interior backflow area difference hydrodynamic pressure stroke multiplier also plays accelerating function, has therefore greatly shortened the test duration, and testing efficiency is provided;
2, the interior backflow area difference hydrodynamic pressure stroke multiplier in the utility model does not need to be equipped with pump and control element, has greatly reduced manufacturing cost, simple in structure, is convenient to maintenance;
3, electromagnetic field is changed because of its machinery-free part, noiseless, pollution-free, volume is little, control the advantages such as flexible, is a kind of technology of real green.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the static output characteristic figure based on ultra-magnetostriction microdisplacement driver of the present utility model.
The number in the figure explanation:
1, based on ultra-magnetostriction microdisplacement driver, 2, interior backflow area difference hydrodynamic pressure stroke multiplier, 3, displacement transducer, 4, fixture, 5, data line, 6, amplifirer, 7, A/D converter, 8, computing machine, 9, coil, 10, GMM rod, 11, take-off lever, 12, active piston, 13, liquid medium, 14, return port, 15, back-moving spring, 16, the output piston bar.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Shown in Figure 1, a kind of fatigue test system, comprise based on ultra-magnetostriction microdisplacement driver 1, interior backflow area difference hydrodynamic pressure stroke multiplier 2, displacement transducer 3, fixture 4 and data line 5, describedly based on ultra-magnetostriction microdisplacement driver 1, comprise GMM rod 10, be wrapped in coil 9 and the take-off lever 11 that is arranged on described GMM rod 10 inside on described GMM rod 10, described interior backflow area difference hydrodynamic pressure stroke multiplier 2 comprises active piston 12, liquid medium 13, output piston bar 16, be arranged on the return port 14 of described output piston bar 16, described interior backflow area difference hydrodynamic pressure stroke multiplier 2 inwalls are equipped with back-moving spring 15, described take-off lever 11 is connected with described active piston 12, described output piston bar 16 ends are equipped with described displacement transducer 3, described data line 5 is connected with described output piston bar 16 by described fixture 4, describedly based on ultra-magnetostriction microdisplacement driver 1 and 3 of described displacement transducers, be connected with amplifirer 6 in turn, A/D converter 7 and computing machine 8.
Further, between the inboard wall of cylinder block of the large end of described output piston bar 16 and described interior backflow area difference hydrodynamic pressure stroke multiplier 2 without seal request.
Further, described output piston bar 16 ends also are equipped with counter.
The described principle of work based on ultra-magnetostriction microdisplacement driver 1 is:
Described GMM rod 10 is wound around by described coil 9, and when in coil, electric current raises, the length of described GMM rod 10 can change, and then is converted into the rectilinear motion of described take-off lever 11; Current reduction in coil, the length of described GMM rod 10 shortens, the counter motion again of described take-off lever 11.
Shown in Figure 2, can find out, under identical input current effect, different precompressions can produce different displacements.But experimental result shows describedly based on ultra-magnetostriction microdisplacement driver 1 electric current-displacement curve, linearity zone is preferably arranged, when practical application, add suitable bias magnetic field can make described based on ultra-magnetostriction microdisplacement driver 1 in the work of this range of linearity.
Principle of work of the present utility model is:
When aliving to described coil 9, to produce driving magnetic field by electromagnetic induction principle, thereby drive described GMM rod 10 to elongation, connect described active piston 12 by described take-off lever 11 and produce positive-displacement, now liquid flows in hydraulic cylinder, by interior backflow area differential principle, the output displacement of described output piston bar 16 is increased, thereby the described little displacement produced based on ultra-magnetostriction microdisplacement driver 1 is amplified, make described data line 5 produce bending; Otherwise described back-moving spring 15 will promote described output piston bar 16 counter motions, thereby make described data line 5 return to initial conditions.
The foregoing is only the preferred embodiment of utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a fatigue test system, it is characterized in that: comprise based on ultra-magnetostriction microdisplacement driver (1), interior backflow area difference hydrodynamic pressure stroke multiplier (2), displacement transducer (3), fixture (4) and data line (5), describedly based on ultra-magnetostriction microdisplacement driver (1), comprise GMM rod (10), be wrapped in the coil (9) on described GMM rod (10) and be arranged on the inner take-off lever (11) of described GMM rod (10), described interior backflow area difference hydrodynamic pressure stroke multiplier (2) comprises active piston (12), liquid medium (13), output piston bar (16), be arranged on the return port (14) of described output piston bar (16), described interior backflow area difference hydrodynamic pressure stroke multiplier (2) inwall is equipped with back-moving spring (15), described take-off lever (11) is connected with described active piston (12), described output piston bar (16) end is equipped with described displacement transducer (3), described data line (5) is connected with described output piston bar (16) by described fixture (4), described based between ultra-magnetostriction microdisplacement driver (1) and described displacement transducer (3), being connected with amplifirer (6) in turn, A/D converter (7) and computing machine (8).
2. fatigue test system according to claim 1 is characterized in that: between the inboard wall of cylinder block of the large end of described output piston (16) and described interior backflow area difference hydrodynamic pressure stroke multiplier (2) without seal request.
3. fatigue test system according to claim 1, it is characterized in that: described output piston bar (16) end also is equipped with counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203169440U CN203337486U (en) | 2013-06-04 | 2013-06-04 | Fatigue test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203169440U CN203337486U (en) | 2013-06-04 | 2013-06-04 | Fatigue test system |
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| CN203337486U true CN203337486U (en) | 2013-12-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278405A (en) * | 2013-06-04 | 2013-09-04 | 苏州大学 | Fatigue testing system |
| CN106053272A (en) * | 2016-08-16 | 2016-10-26 | 苏州东菱振动试验仪器有限公司 | Broadband fatigue testing machine |
| CN107063610A (en) * | 2017-06-02 | 2017-08-18 | 南方英特空调有限公司 | A kind of four axle electromagnetism torsional oscillation comprehensive test platforms |
| CN107228758A (en) * | 2017-05-27 | 2017-10-03 | 重庆腾毅兴精密电子有限公司 | A kind of USB data line method of testing |
-
2013
- 2013-06-04 CN CN2013203169440U patent/CN203337486U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278405A (en) * | 2013-06-04 | 2013-09-04 | 苏州大学 | Fatigue testing system |
| CN106053272A (en) * | 2016-08-16 | 2016-10-26 | 苏州东菱振动试验仪器有限公司 | Broadband fatigue testing machine |
| CN107228758A (en) * | 2017-05-27 | 2017-10-03 | 重庆腾毅兴精密电子有限公司 | A kind of USB data line method of testing |
| CN107063610A (en) * | 2017-06-02 | 2017-08-18 | 南方英特空调有限公司 | A kind of four axle electromagnetism torsional oscillation comprehensive test platforms |
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| Date | Code | Title | Description |
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| 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: 20131211 Termination date: 20150604 |
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| EXPY | Termination of patent right or utility model |