CN205120279U - Premolding magnetic induced shrinkage or elongation force transducer - Google Patents
Premolding magnetic induced shrinkage or elongation force transducer Download PDFInfo
- Publication number
- CN205120279U CN205120279U CN201520919330.0U CN201520919330U CN205120279U CN 205120279 U CN205120279 U CN 205120279U CN 201520919330 U CN201520919330 U CN 201520919330U CN 205120279 U CN205120279 U CN 205120279U
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- output shaft
- permanent magnet
- base
- magnetostrictive rod
- spring
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Abstract
The utility model discloses a premolding magnetic induced shrinkage or elongation force transducer, include the base and install the shell on the base, enclose between shell inner wall and the base and close the formation installation cavity, its characterized in that: be provided with lower part permanent magnet, spring, output shaft, upper portion permanent magnet, magnetic induced shrinkage or elongation stick in the installation cavity, the lower extreme of magnetic induced shrinkage or elongation stick is connected with the base, and the upper end links to each other with the output shaft, spring suit is outside the magnetic induced shrinkage or elongation stick to the butt is between lower part permanent magnet and output shaft, the upper portion permanent magnet sets up between output shaft and shell, is equipped with induction coil, resistance strain gauge, hall sensor on the magnetic induced shrinkage or elongation stick, and wherein, the polarity of upper portion permanent magnet and lower part permanent magnet opposite face is opposite to provide the bias magnetic field. The utility model discloses simple structure, the equipment of being convenient for can be done all can to static state, developments power detects, especially can carry out continuous measurement to the die mould load of drawing of orientation reversal, big or small variation with time, can also realize the synchronous sampling of multivariable.
Description
Technical field
The utility model belongs to magnetostriction pull pressure sensor technical field, particularly a kind of pre-profiling magnetostriction force sensor.
Background technology
Magnetostriction materials are done to be one of 3 categorles materials (piezoelectric, marmem, magnetostriction materials) manufacturing force snesor.
The measurement of piezoelectric force transducer carries out based on the piezoelectric effect of piezoelectric, and namely when piezoelectric is subject to the effect of stress, heterocharge can be assembled in the both sides of piezoelectric board, just can be learnt the size of compelling force by the voltage difference measuring piezoelectric board both sides.Therefore piezoelectric can be measured dynamic load, cannot measure static and quasi-static load.Meanwhile, piezoelectric is more crisp, cannot bear larger load, cannot be used for the occasion that power is very large.This limits the application of piezoelectric greatly.
Marmem has the feature of recoverable force.Marmem can present two kinds of different phase structures at heated condition.And this process can be obtained repeatedly by the circulation of temperature, the simple thermal expansion of strain ratio obtained with these two kinds of SMEs is much bigger.Marmem has remarkable advantage in low frequency and Long Distances driving, because it controls by temperature, this greatly limits its application.
The utility model is for existing deficiency, and proposing a kind of take magnetostriction materials as the magneto strictive sensor of sensitive element.
Utility model content
Technical problem to be solved in the utility model is that the deficiency existed for above-mentioned prior art provides that a kind of structure is simple, reliable operation, can realize the pre-profiling magnetostriction force sensor of the measurement to static, quasistatic and alternate load preferably.
The technical scheme that the utility model adopts is: a kind of pre-profiling magnetostriction force sensor, comprise base and be arranged on the shell on base, formation installation cavity is enclosed between described outer casing inner wall and base, it is characterized in that: in installation cavity, be provided with bottom permanent magnet, spring, output shaft, upper permanent magnets, magnetostrictive rod, the lower end of magnetostrictive rod is connected with base, upper end is connected with output shaft, described spring housing is contained in outside magnetostrictive rod, and be connected between bottom permanent magnet and output shaft, described upper permanent magnets is arranged between output shaft and shell, magnetostrictive rod is provided with inductive coil, resistance strain gage, Hall element, wherein, the polarity of upper permanent magnets and bottom permanent magnet opposite face is contrary, to provide bias magnetic field.
By technique scheme, the outer wall of described spring is close to installation cavity inwall, and in original state, spring is in compressive state, for total applies certain prestress.
By technique scheme, the lower end of output shaft is provided with flange, described upper permanent magnets is sleeved on output shaft, and is connected between installation cavity and flange.
By technique scheme, the two ends of described magnetostrictive rod are connected with output shaft and whorl of base respectively.
By technique scheme, the aperture of the center pit of spring is greater than the external diameter of magnetostrictive rod, makes to there is gap between spring and magnetostrictive rod, utilizes this gap on magnetostrictive rod, be pasted with Hall element, resistance strain gage and be wound with inductive coil.
Beneficial effect acquired by the utility model is: the utility model structure is simple, be convenient to assembling, can detect static force, dynamic force, especially continuous print measurement can be carried out to direction alternation, the load of size time dependent tension and compression type, multivariable synchronous acquisition can also be realized, simultaneously, magnetostriction materials have higher Curie temperature, effectively can avoid the impact that temperature produces measurement result.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Wherein: 1, base, 2, bottom permanent magnet, 3, spring, 4, output shaft, 5, upper permanent magnets, 6, shell, 7, magnetostrictive rod, 8, Hall element, 9, inductive coil, 10, resistance strain gage.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, present embodiments provide a kind of pre-profiling magnetostriction force sensor, comprise base 1 and the shell 6 on base with bolts, base 1 and shell 6 define an enclosed installation cavity, effectively can reduce the magnetic dispersion that total produces.Meanwhile, base 1 and shell 6 all adopt the good electrical pure iron manufacture of magnetic property to form, thus can realize the conduction in magnetic field.Bottom permanent magnet 2 is provided with in installation cavity, spring 3, output shaft 4, upper permanent magnets 5, magnetostrictive rod 7, the two ends of magnetostrictive rod 7 are threaded with output shaft 4 and base 1 respectively, spring 3 is set with outside magnetostrictive rod 7, the outer wall of spring 3 is close to installation cavity inwall, wherein, upper permanent magnets 5 and bottom permanent magnet 2 are all in the form of a ring, bottom permanent magnet 2 is sleeved on the center mount pad of base 1, spring 3 is arranged between bottom permanent magnet 2 and output shaft 4, at initial time, spring 3 is in compressive state, its all to apply a certain size power to bottom permanent magnet 2 and output shaft 4, thus ensure that the position of bottom permanent magnet 2 does not change.The lower end of output shaft 4 is provided with flange, and described upper permanent magnets 5 is sleeved on output shaft 4, and is connected between installation cavity and flange.Wherein, the polarity of upper permanent magnets 5 and bottom permanent magnet 2 is contrary, thus applies bias magnetic field to total, and base, magnetostrictive rod, output shaft and shell define a complete magnetic loop, are convenient to the conduction in magnetic field.The aperture of the center pit of spring 3 is greater than the external diameter of magnetostrictive rod 7, makes to there is gap between spring 3 and magnetostrictive rod 7, utilizes this gap on magnetostrictive rod, be pasted with Hall element 8, resistance strain gage 10 and be wound with inductive coil 9.
In installation cavity, magnetostrictive rod 7 serves as the core of total, because magnetostrictive rod 7 two ends are fixedly connected with output shaft 4 with base 1 respectively.Plus load just can be delivered on magnetostrictive rod 7 preferably by output shaft 4.Simultaneously in measuring process, because base 1 is fixing, like this, load just can act on magnetostrictive rod 7 preferably, and this force snesor can be measured static state, quasistatic and alternate load.
In the present embodiment, inductive coil 9 two ends directly can be connected into NI data collecting card, measure the induced voltage that inductive coil 9 two ends produce; By inductive coil 9 two ends access fluxmeter, finally can also be connected into NI data collecting card, thus measure the size of the magnetic induction density on magnetostrictive rod 7.By the lead-in wire at resistance strain gage 10 two ends is linked into strainmeter, after tap into NI data collecting card, thus the measurement to the strain on magnetostrictive rod 7 can be realized.The lead-in wire of Hall element 8 a part of connection with power supply is energized to it, and a part is connected into NI data collecting card in addition, the size of the bias magnetic field that collection upper permanent magnets 5 and bottom permanent magnet 2 apply to total.Finally, all signals measured by NI data collecting card are input to PC computer, thus realize the reading to experimental data, thus obtain size and the direction of applied load.
The utility model structure is simple, and processing cost is low, easy installation and reliable, and is convenient to carrying, can carry out continuous coverage, have good application prospect to static state, quasistatic and alternate load.
Claims (5)
1. a pre-profiling magnetostriction force sensor, comprise base and be arranged on the shell on base, formation installation cavity is enclosed between described outer casing inner wall and base, it is characterized in that: in installation cavity, be provided with bottom permanent magnet, spring, output shaft, upper permanent magnets, magnetostrictive rod, the lower end of magnetostrictive rod is connected with base, upper end is connected with output shaft, described spring housing is contained in outside magnetostrictive rod, and be connected between bottom permanent magnet and output shaft, described upper permanent magnets is arranged between output shaft and shell, magnetostrictive rod is provided with inductive coil, resistance strain gage, Hall element, wherein, the polarity of upper permanent magnets and bottom permanent magnet opposite face is contrary, to provide bias magnetic field.
2. a kind of pre-profiling magnetostriction force sensor according to claim 1, is characterized in that, the outer wall of described spring is close to installation cavity inwall, and in original state, spring is in compressive state, for total applies certain prestress.
3. a kind of pre-profiling magnetostriction force sensor according to claim 1 and 2, is characterized in that, the lower end of output shaft is provided with flange, and described upper permanent magnets is sleeved on output shaft, and is connected between installation cavity and flange.
4. a kind of pre-profiling magnetostriction force sensor according to claim 1 and 2, is characterized in that, the two ends of described magnetostrictive rod are connected with output shaft and whorl of base respectively.
5. a kind of pre-profiling magnetostriction force sensor according to claim 1 and 2, it is characterized in that, the aperture of the center pit of spring is greater than the external diameter of magnetostrictive rod, make to there is gap between spring and magnetostrictive rod, utilize this gap on magnetostrictive rod, be pasted with Hall element, resistance strain gage and be wound with inductive coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919330.0U CN205120279U (en) | 2015-11-18 | 2015-11-18 | Premolding magnetic induced shrinkage or elongation force transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919330.0U CN205120279U (en) | 2015-11-18 | 2015-11-18 | Premolding magnetic induced shrinkage or elongation force transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205120279U true CN205120279U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520919330.0U Expired - Fee Related CN205120279U (en) | 2015-11-18 | 2015-11-18 | Premolding magnetic induced shrinkage or elongation force transducer |
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| Country | Link |
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| CN (1) | CN205120279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
| CN112051528A (en) * | 2020-08-06 | 2020-12-08 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
-
2015
- 2015-11-18 CN CN201520919330.0U patent/CN205120279U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
| CN112051528A (en) * | 2020-08-06 | 2020-12-08 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
| CN112051528B (en) * | 2020-08-06 | 2021-11-02 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20161118 |