CN204255782U - A kind of simple wire dynamic fatigue test device - Google Patents

A kind of simple wire dynamic fatigue test device Download PDF

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Publication number
CN204255782U
CN204255782U CN201420719662.XU CN201420719662U CN204255782U CN 204255782 U CN204255782 U CN 204255782U CN 201420719662 U CN201420719662 U CN 201420719662U CN 204255782 U CN204255782 U CN 204255782U
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CN
China
Prior art keywords
chuck
fixture block
fatigue test
dynamic fatigue
sample
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
Application number
CN201420719662.XU
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Chinese (zh)
Inventor
倪娟丽
李莉
刘强
杨安志
吴成明
冯擎峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
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Priority to CN201420719662.XU priority Critical patent/CN204255782U/en
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Publication of CN204255782U publication Critical patent/CN204255782U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides simple wire dynamic fatigue test device, belongs to field of metal material detection.It solves metal material pick-up unit complexity in prior art and detects inconvenient problem.This simple wire dynamic fatigue test device, comprise support, also comprise for clamped sample two ends and the chuck one arranged in opposite directions, chuck two, and the elevating mechanism for driving chuck two to move up and down relative to chuck one, described chuck one is fixedly installed on the upper end of described support, described chuck two is fixedly installed on elevating mechanism, described chuck one and chuck two are equipped with the metal probe contacted with test specimen, are serially connected with by wire between described metal probe and change and the computer recording test period for detecting sample resistance.This simple wire dynamic fatigue test device is simple and convenient, workable.

Description

A kind of simple wire dynamic fatigue test device
Technical field
The utility model belongs to field of metal material detection, relates to a kind of metal fatigue proving installation, particularly a kind of simple wire dynamic fatigue test device.
Background technology
Common metal material, the fatigue test method of employing routine just can its fatigue behaviour of effectively acquisition.But adopt conventional fatigue tester to be difficult to accurately record its fatigue behaviour data for the material such as tinsel of electronic apparatus system switching, often make the data error that records very large because clamping aspect problem also has equipment load displacement excessive.Low-frequency fatigue test machine [application number: CN91222487.8 as a kind of in Chinese patent, notification number: CN2148959], be made up of testing machine main body, propulsion system, aligning counter weight device and control system four major parts, it is characterized in that: the fuselage of main body is tower structure, and the conciliation stud of aligning counter weight device outputting power and chuck link together; Be provided with upper and lower two counterweight springs in the counterweight pipe box of aligning counter weight device, the end platform of trace is in the middle of upper and lower counterweight spring.Although this technical scheme can detect the fatigue strength of sample, cannot fatigue lifetime of accurate recording sample, and use comparatively complicated.
Prior art is compared, and this simple wire dynamic fatigue test device has the following advantages:
1, utilize the principle of elevating mechanism, analog sample is as actual loading pattern during switching material, simple and convenient, workable;
2, possess counting simultaneously, measure the function of displacement, coordinate sample copy body length, the convenient maximum strain obtaining sample root, the i.e. fatigue strength of sample;
3, by computer record sample change in resistance and corresponding test period, the fatigue lifetime of sample can conveniently be obtained.
Summary of the invention
There are the problems referred to above for existing technology in the utility model, propose a kind of simple wire dynamic fatigue test device, this test unit can detect the fatigue lifetime of tinsel sample easily, and the simple structure of this device, easy to use.
The utility model is realized by following technical proposal: a kind of simple wire dynamic fatigue test device, comprise support, it is characterized in that, also comprise for clamped sample two ends and the chuck one arranged in opposite directions, chuck two, and the elevating mechanism for driving chuck two to move up and down relative to chuck one, described chuck one is fixedly installed on the upper end of described support, described chuck two is fixedly installed on elevating mechanism, described chuck one and chuck two are equipped with the metal probe contacted with test specimen, be serially connected with by wire between described metal probe and change and the computer recording test period for detecting sample resistance.
This simple wire dynamic fatigue experimental provision analog sample is as actual loading pattern during switching material, utilize elevating mechanism rising and decline to drive one end of sample to swing up and down and do semi-girder dynamic fatigue test, and judge whether fracture by the change of computer detection sample resistance, structure is simple, workable.
In above-mentioned a kind of simple wire dynamic fatigue test device, described elevating mechanism comprises driving stem, electromagnetic driver, signal amplifier and signal generator, the signal input part of described signal generator signal output part connection signal amplifier, the signal output part of described signal amplifier connects electromagnetic driver, described electromagnetic driver and described driving stem lower end are connected, and described driving stem upper end is fixedly installed described chuck two.Electromagnetic driver drives driving stem to pump according to the signal with certain waveform and frequency that signal generator is carried.
In above-mentioned a kind of simple wire dynamic fatigue test device, described elevating mechanism comprises motor, speed reduction unit, eccentric wheel, rocking bar and driving stem, described speed reduction unit is located between described motor and described eccentric wheel, connecting eccentric wheel side, described rocking bar one end and depart from home position, the other end connects the lower end of driving stem, and described driving stem upper end is fixedly installed described chuck two.Rotated by speed reduction unit band movable eccentric wheel during electric machine rotation, eccentric wheel drives connected rocking bar to move reciprocatingly while rotating, and rocking bar drives connected driving stem to pump then.
In above-mentioned a kind of simple wire dynamic fatigue test device, also comprise the laser range finder for measuring displacement data when described chuck two moves up and down.The displacement moved up and down by laser range finder measurement driving stem can obtain sample bending situation in test, is convenient to the follow-up analysis to the sample life-span.
In above-mentioned a kind of simple wire dynamic fatigue test device, described chuck one is identical chuck with chuck two, include fixture block, lower fixture block, for the screw rod of fixing upper fixture block and lower fixture block and the nut that coordinates with described screw rod, described screw rod is through upper fixture block and lower fixture block and match with nut and make upper fixture block and lower fixture block clamp sample.Regulating by cooperatively interacting between screw rod and nut to make chuck not only adapt with the thickness of sample and firmly can clamp sample.
In above-mentioned a kind of simple wire dynamic fatigue test device, the surfaces be clad of described chuck one and chuck two has insulation course.By insulating to chuck one and chuck two, avoiding the situation measuring the survey of sample resistance change mistiming to occur, maximizing and reducing measuring error.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the utility model embodiment one.
Fig. 2 is the structural principle schematic diagram of the utility model embodiment two.
In figure, 1, support; 21, upper fixture block; 22, lower fixture block; 23, screw rod; 24, nut; 3, computer; 4, driving stem; 5, laser range finder; 6a, electromagnetic brake; 6b, rocking bar; 7a, signal amplifier; 7b, eccentric wheel; 8a, signal generator; 8b, motor; 9, speed reduction unit.
Embodiment
Be below specific embodiment of the utility model, and by reference to the accompanying drawings technical scheme of the present invention be further described, but the present invention is not limited to these embodiments.
Embodiment one:
As shown in Figure 1, this simple wire dynamic fatigue test device, comprise support 1, also comprise for clamped sample two ends and the chuck one arranged in opposite directions, chuck two, and the elevating mechanism for driving the relative chuck one of chuck two to move up and down, chuck one is fixedly installed on the upper end of support 1, support 1 lower end fixes on the ground, chuck two is fixedly installed on elevating mechanism, chuck one and chuck two are equipped with the metal probe contacted with test specimen when grips lives sample, be serially connected with by wire between metal probe and change and the computer 3 recording test period for detecting sample resistance, elevating mechanism is also provided with the laser range finder 5 for measuring the displacement that chuck two moves up and down.
More specifically, chuck one is identical chuck with chuck two, include fixture block 21, lower fixture block 22, for the screw rod 23 of fixing upper fixture block 21 and lower fixture block 22 and the nut 24 that coordinates with described screw rod 23, screw rod 23 passes upper fixture block 21 and lower fixture block 22 and matches with nut 24 and makes upper fixture block 21 and lower fixture block 22 clamp sample.Elevating mechanism comprises driving stem 4, electromagnetic driver 6a, signal amplifier 7a and signal generator 8a, the signal input part of signal generator 8a signal output part connection signal amplifier 7a, the signal output part of signal amplifier 7a connects the input end of electromagnetic driver 6a by signal wire, electromagnetic driver 6a and driving stem 4 lower end are connected, and driving stem 4 upper end is fixedly installed chuck two.
In order to avoid chuck has an impact to sample resistance measurement, the surfaces be clad of chuck one and chuck two there is insulation course.Like this, as long as be placed on sample two ends by probe, then after being clamped by chuck, just by computer detection sample, whether resistance variations is to determine whether sample ruptures in process of the test.
This simple wire dynamic fatigue test device is by fixing sample one end, the other end pumps under the effect of electromagnetic driver 6a, then the degree of strain of moving displacement determination sample root is measured by laser range finder 5, detect according to computer 3 time that the change of sample resistance value obtains sample breakage again, the fatigue lifetime of the maximum strain of sample root and sample can be determined.In this simple wire dynamic fatigue test device, except making except sample pumps, can also according to test condition, the Power output direction resetting electromagnetic driver 6a is that sample does side-to-side movement, with the needs of adequacy test place or environment.
Embodiment two:
As shown in Figure 2, this is the another kind of scheme of this simple wire dynamic fatigue test device, wherein the structure of fixed sample is all less than too large change, larger change is revised by elevating mechanism, in this programme, elevating mechanism comprises motor 8b, speed reduction unit 9, eccentric wheel 7b, rocking bar 6b and driving stem 4, speed reduction unit 9 is located between motor 8b and eccentric wheel 7b, connecting eccentric wheel 7b side, rocking bar 6b one end and depart from home position, the other end connects the lower end of driving stem 4, and driving stem 4 upper end is fixedly installed described chuck two.When electric machine rotation, the output shaft of motor 8b is slowed down by speed reduction unit 9 and is with movable eccentric wheel 7b to rotate, link position due to rocking bar 6b and eccentric wheel 7b is in eccentric wheel 7b side and departs from center of circle part, when eccentric wheel rotates, the rhythm that rocking bar 6b just can rotate along with eccentric wheel 7b pumps, thus driving driving stem 4 to pump, the other end making chuck two clip sample moves up and down.
In order to the displacement that chuck two moves up and down can be controlled, the rocking bar 6b of many different lengths can be equipped with, also or adopt and can to stretch and can the rocking bar 6b of regular length.Different rocking bar 6b can be adopted like this, to ensure the demand that different sample fatigue test intensity is different to different samples.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Claims (6)

1. a simple wire dynamic fatigue test device, comprise support (1), it is characterized in that, also comprise for clamped sample two ends and the chuck one arranged in opposite directions, chuck two, and the elevating mechanism for driving chuck two to move up and down relative to chuck one, described chuck one is fixedly installed on the upper end of described support (1), described chuck two is fixedly installed on elevating mechanism, described chuck one and chuck two are equipped with the metal probe contacted with test specimen, be serially connected with by wire between described metal probe and change and the computer (3) recording test period for detecting sample resistance.
2. simple wire dynamic fatigue test device according to claim 1, it is characterized in that, described elevating mechanism comprises driving stem (4), electromagnetic driver, signal amplifier (7a) and signal generator (8a), the signal input part of described signal generator (8a) signal output part connection signal amplifier (7a), the signal output part of described signal amplifier (7a) connects electromagnetic driver, described electromagnetic driver and described driving stem (4) lower end are connected, and described driving stem (4) upper end is fixedly installed described chuck two.
3. simple wire dynamic fatigue test device according to claim 1, it is characterized in that, described elevating mechanism comprises motor (8b), speed reduction unit (9), eccentric wheel (7b), rocking bar (6b) and driving stem (4), described speed reduction unit (9) is located between described motor (8b) and described eccentric wheel (7b), connecting eccentric wheel (7b) side, described rocking bar (6b) one end and depart from home position, the other end connects the lower end of driving stem (4), and described driving stem (4) upper end is fixedly installed described chuck two.
4. the simple wire dynamic fatigue test device according to claim 1 or 2 or 3, is characterized in that, also comprises the laser range finder (5) for measuring displacement data when described chuck two moves up and down.
5. the simple wire dynamic fatigue test device according to claim 1 or 2 or 3, it is characterized in that, described chuck one is identical chuck with chuck two, include fixture block (21), lower fixture block (22), for the fixing screw rod (23) going up fixture block (21) and lower fixture block (22) and the nut (24) coordinated with described screw rod (23), described screw rod (23) matches through upper fixture block (21) and lower fixture block (22) and with nut (24) and makes upper fixture block (21) and lower fixture block (22) clamp sample.
6. simple wire dynamic fatigue test device according to claim 5, is characterized in that, the surfaces be clad of described chuck one and chuck two has insulation course.
CN201420719662.XU 2014-11-26 2014-11-26 A kind of simple wire dynamic fatigue test device Expired - Fee Related CN204255782U (en)

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Application Number Priority Date Filing Date Title
CN201420719662.XU CN204255782U (en) 2014-11-26 2014-11-26 A kind of simple wire dynamic fatigue test device

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105004620A (en) * 2015-07-16 2015-10-28 浙江工业大学 High-frequency fatigue testing machine dynamic load error compensation method
CN105092398A (en) * 2015-07-01 2015-11-25 河海大学 Asphalt concrete electromagnetic type multiaxial fatigue testing machine
CN105675396A (en) * 2016-02-01 2016-06-15 上海交通大学 Multifunctional uniaxial tensile test device for microstructure in-situ online observation
CN106092788A (en) * 2016-08-23 2016-11-09 成都慧信实验设备有限公司 Swing type data wire durability degree test device
CN106353077A (en) * 2016-08-23 2017-01-25 成都慧信实验设备有限公司 Durability test device of rotary data cable connector
CN108051316A (en) * 2017-12-14 2018-05-18 辽宁工程技术大学 Electromagnetic field induces ferrimagnet dynamic bending fatigue test device and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092398A (en) * 2015-07-01 2015-11-25 河海大学 Asphalt concrete electromagnetic type multiaxial fatigue testing machine
CN105092398B (en) * 2015-07-01 2017-08-15 河海大学 Bituminous concrete electromagnetic type multiaxle fatigue experimental machine
CN105004620A (en) * 2015-07-16 2015-10-28 浙江工业大学 High-frequency fatigue testing machine dynamic load error compensation method
CN105004620B (en) * 2015-07-16 2017-09-26 浙江工业大学 A kind of dynamic load error compensating method of HF fatigue testing machine
CN105675396A (en) * 2016-02-01 2016-06-15 上海交通大学 Multifunctional uniaxial tensile test device for microstructure in-situ online observation
CN105675396B (en) * 2016-02-01 2018-04-24 上海交通大学 Multi-functional single shaft tensile test apparatus for microstructure original position online observation
CN106092788A (en) * 2016-08-23 2016-11-09 成都慧信实验设备有限公司 Swing type data wire durability degree test device
CN106353077A (en) * 2016-08-23 2017-01-25 成都慧信实验设备有限公司 Durability test device of rotary data cable connector
CN108051316A (en) * 2017-12-14 2018-05-18 辽宁工程技术大学 Electromagnetic field induces ferrimagnet dynamic bending fatigue test device and method

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150408

Termination date: 20191126