CN203275217U - High-precision dynamic-loading fatigue test device - Google Patents
High-precision dynamic-loading fatigue test device Download PDFInfo
- Publication number
- CN203275217U CN203275217U CN 201320180512 CN201320180512U CN203275217U CN 203275217 U CN203275217 U CN 203275217U CN 201320180512 CN201320180512 CN 201320180512 CN 201320180512 U CN201320180512 U CN 201320180512U CN 203275217 U CN203275217 U CN 203275217U
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- permanent magnet
- electromagnet
- mounting bracket
- measurement
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Abstract
The utility model relates to a high-precision dynamic-loading fatigue test device which comprises a permanent magnet, an electromagnet, a force sensor, a mounting bracket wall and a base, wherein a workpiece to be tested is fixed to the base through a clamping device; the mounting bracket wall is fixed with the base; the mounting bracket wall is provided with the force sensor; the electromagnet is rigidly connected with the force sensor; the permanent magnet is installed on the workpiece to be tested; the electromagnet and the permanent magnet are opposite to each other and are a set distance away from each other; and the set distance is greater than the vibration amplitude of the workpiece to be tested in the fatigue test. The high-precision dynamic-loading fatigue test device has the advantages of high measurement precision and simple structure, and is easy to operate; and the loading mechanism does not directly contact the workpiece to be tested.
Description
Technical field
The utility model relates to the torture test field.
Background technology
The essence of torture test is to provide stable cyclic load by loading equipemtn to the target test specimen, to measure the process of material or structural fatigue stress or number of strain cycles.
Fatigue tester can be divided into multiple according to the mode that loads and the difference of application, as hydraulic pressure, pneumatic equipment commonly used, bias-load equipment and regulations and parameters loading equipemtn etc., but because load maintainer directly contacts with workpiece for measurement, can produce on workpiece the impact of an impulsive force, moreover sensor moves with load maintainer, sensor self inertia power also can exert an influence to measuring accuracy, and under the running of fatigue tester high frequency, load maintainer being produced loss, the life-span is short.Electromagnetic resonance formula fatigue tester be with can obtain higher test frequency and measuring accuracy, but complicated operation comparatively speaking, and cost is high.
Summary of the invention
In order to overcome the impact that existing fatigue tester machinery produces, the deficiency of loss when loading, that the utility model provides is that a kind of load maintainer does not directly contact with workpiece for measurement, measuring accuracy is high, easy-operating Dynamic High-accuracy loading fatigue test device simple in structure.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of Dynamic High-accuracy loading fatigue test device, comprise permanent magnet, electromagnet, power sensor, mounting bracket wall and base, workpiece for measurement is fixed on base by clamp device, described mounting bracket wall and base are fixed, installing force sensor on described mounting bracket wall, described electromagnet and power sensor gun iron link, described permanent magnet is arranged on workpiece for measurement, between described electromagnet and permanent magnet, the position is relative and the distance of setting arranged, and the distance of described setting is the amplitude when the torture test greater than described workpiece for measurement.
Further, described power sensor can be arranged on described mounting bracket wall up or down, and described permanent magnet can be arranged on described workpiece for measurement up or down.
Technical conceive of the present utility model is: energising makes it produce magnetic field to electromagnet, magnetic field interaction between described electromagnet and permanent magnet, change the direction of current that magnet coil passes into, just can change the pole orientation of electromagnet, between electromagnet and permanent magnet, the force direction of power also can change thereupon, thereby bears an alternate load on workpiece for measurement; By controlling size and the inversion frequency of electric current input, in the time of can controlling torture test, workpiece for measurement shakes frequently and amplitude.
Because workpiece for measurement under the effect of power can produce a microdeformation, and the interaction force between magnet and Range-based between the two, therefore in order to obtain more accurate load, the numerical value that records by the power sensor control pass into electric current in electromagnet size to control the intensity of electromagnetic field, namely adopt closed-loop control.The utility model only is useful in the situation of less power and small deformation.
Advantage of the present utility model shows: because the power sensor is static, do not produce motion, reduced the impact of sensor self inertia power on measuring accuracy; Thereby can change by controlling electromagnetism iron wire bag direction of current the loading that both direction was drawn, pressed in the realization of electromagnet polarity, simple in structure, easy to operate, range of adjustment is wide, and precision is high; Charger and workpiece for measurement be not in contact with one another, without impacted, the impact of wearing and tearing, the life-span is long; By controlling size and the inversion frequency of electric current input, in the time of can controlling torture test, workpiece for measurement shakes frequently and amplitude.
Description of drawings
Fig. 1 is the schematic diagram of Dynamic High-accuracy loading fatigue test device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
With reference to Fig. 1, a kind of Dynamic High-accuracy loading fatigue test device comprises permanent magnet 5, electromagnet 4, power sensor 3, mounting bracket wall 2, base 1.Described workpiece 6 is fixed on base 1 by clamp device, described mounting bracket wall 2 is fixing with base 1, installing force sensor 3 on described mounting bracket wall 2, described electromagnet 4 and power sensor 3 gun iron links, described permanent magnet 5 is arranged on workpiece for measurement 6, between described electromagnet 4 and permanent magnet 5, the position is relative and the distance of setting arranged, and the distance of described setting is the amplitude when the torture test greater than described workpiece for measurement.
Further, described power sensor 3 and electromagnet 4 can be on mounting bracket wall 2 shift position, described permanent magnet 5 can move corresponding position on workpiece for measurement 6.
Claims (2)
1. Dynamic High-accuracy loading fatigue test device, it is characterized in that: described test unit comprises permanent magnet, electromagnet, the power sensor, mounting bracket wall and base, workpiece for measurement is fixed on base by clamp device, described mounting bracket wall and base are fixed, installing force sensor on described mounting bracket wall, described electromagnet and power sensor gun iron link, described permanent magnet is arranged on workpiece for measurement, between described electromagnet and permanent magnet, the position is relative and the distance of setting arranged, the distance of described setting is the amplitude when the torture test greater than described workpiece for measurement.
2. Dynamic High-accuracy loading fatigue test device as claimed in claim 1, it is characterized in that: described power sensor can be arranged on described mounting bracket wall up or down, and described permanent magnet can be arranged on described workpiece for measurement up or down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180512 CN203275217U (en) | 2013-04-10 | 2013-04-10 | High-precision dynamic-loading fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180512 CN203275217U (en) | 2013-04-10 | 2013-04-10 | High-precision dynamic-loading fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275217U true CN203275217U (en) | 2013-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180512 Expired - Fee Related CN203275217U (en) | 2013-04-10 | 2013-04-10 | High-precision dynamic-loading fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323354A (en) * | 2013-04-10 | 2013-09-25 | 浙江工业大学 | High-precision dynamic-loading fatigue test apparatus |
| CN106323630A (en) * | 2016-10-21 | 2017-01-11 | 济南大学 | Electromagnetic enclosed-type loading device |
| CN106546496A (en) * | 2017-01-23 | 2017-03-29 | 重庆科技学院 | The triaxial rheological experiment device of electromagnetism loading |
-
2013
- 2013-04-10 CN CN 201320180512 patent/CN203275217U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323354A (en) * | 2013-04-10 | 2013-09-25 | 浙江工业大学 | High-precision dynamic-loading fatigue test apparatus |
| CN106323630A (en) * | 2016-10-21 | 2017-01-11 | 济南大学 | Electromagnetic enclosed-type loading device |
| CN106546496A (en) * | 2017-01-23 | 2017-03-29 | 重庆科技学院 | The triaxial rheological experiment device of electromagnetism loading |
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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: 20131106 Termination date: 20160410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |