CN205120024U - Iron gallium alloy displacement sensor - Google Patents
Iron gallium alloy displacement sensor Download PDFInfo
- Publication number
- CN205120024U CN205120024U CN201520921729.2U CN201520921729U CN205120024U CN 205120024 U CN205120024 U CN 205120024U CN 201520921729 U CN201520921729 U CN 201520921729U CN 205120024 U CN205120024 U CN 205120024U
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- CN
- China
- Prior art keywords
- gallium alloy
- iron gallium
- spring
- base
- displacement transducer
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Abstract
The utility model discloses an iron gallium alloy displacement sensor, include the base and install the shell on the base, enclosing between shell inner wall and the base and closing the formation installation cavity, be provided with coil skeleton in the installation cavity, coil skeleton's outer peripheral face is provided with center bore around being equipped with exciting coil on coil skeleton, be provided with indisputable gallium alloy bar in this center bore, and wind on the indisputable gallium alloy bar and be equipped with induction coil, resistance strain gauge, hall sensor, the lower extreme and the base threaded connection of indisputable gallium alloy bar, its coil skeleton 0: the upper end of iron gallium alloy bar is connected with the connecting axle, the upper portion of connecting axle sets up the spring mounting chamber, is provided with the spring at the spring mounting intracavity, is provided with the output shaft in the upper end of spring, the output shaft can be followed the downward axial of casing and slided. The utility model discloses simple structure, simple to operate, and can the true displacement to the outside of calibration measure.
Description
Technical field
The utility model relates to a kind of displacement transducer technology field, especially a kind of iron gallium alloy displacement transducer of good mechanical performance.
Background technology
Displacement transducer is the electric signal converts displacement of outside being become sensor internal, and it is outputted to the device on relevant device.The type of current displacement transducer has a lot, comprises conductive plastics displacement transducer, metallic glass axial translation sensor, Mageneto-sensitive type displacement transducer, optical displacement sensor and magnetostrictive displacement sensor etc.
Conductive plastics displacement transducer conventional in the market utilizes conductive plastics at the excellent properties of each side such as electric property, shop characteristic and mechanical property, substitute original carbon film and metalfilmresistor, sensor is improved all greatly in the performance of each side such as precision, life-span, output smoothness and resolution.But there is resolving power difference in it, the weak points such as high frequency characteristics difference.
The resistive element of metallic glass axial translation sensor can be made up of alloy film, metal oxide film, metal forming etc.Feature is that resolving power is high, high temperature resistant, temperature coefficient is little, moving noise is little, flatness is good.But it is very high to the requirement of metal film, the manufacturing defect of metallic film can produce considerable influence to measurement result.
Mageneto-sensitive type displacement transducer adopts contactless mode to carry out displacement measurement, and measuring process is very convenient, but Mageneto-sensitive type displacement transducer is higher to operating environment requirements, is not suitable for measuring when environment is poor.
Optical displacement sensor is the same with Mageneto-sensitive type displacement transducer, also adopt contactless mode to carry out displacement measurement, effectively can eliminate Mechanical Contact, measuring process is more simple and reliable, but the processing procedure of its digital signal exported is more loaded down with trivial details, needs the time of at substantial.
Utility model content
Technical problem to be solved in the utility model be the deficiency existed for above-mentioned prior art provide a kind of structure simple, environment can be overcome sensor is impacted, measurement performance good iron gallium alloy displacement transducer.
The technical scheme that the utility model adopts is: a kind of iron gallium alloy displacement transducer, comprise base and be arranged on the shell on base, formation installation cavity is enclosed between described outer casing inner wall and base, coil rack is provided with in installation cavity, the outer peripheral face of coil rack is arranged with drive coil, coil rack is provided with central shaft hole, iron gallium alloy rod is provided with in this central shaft hole, iron gallium alloy rod is arranged with inductive coil, resistance strain gage, Hall element, the lower end of iron gallium alloy rod is connected with whorl of base, it is characterized in that: the upper end of iron gallium alloy rod is connected with coupling shaft, the top of described coupling shaft arranges spring fitting chamber, spring is provided with in spring fitting chamber, the upper end of spring is provided with output shaft, described output shaft can along the downward axial slip of housing.
By technique scheme, the lower end of described output shaft is provided with backstop half the circumference of the sleeve where it joins the shoulder, and described backstop half the circumference of the sleeve where it joins the shoulder matches with the stepped hole of shell.
By technique scheme, the upper end in described spring fitting chamber is positioned at the center pit of shell, and lower end is positioned at the central shaft hole of coil rack.
By technique scheme, the lower end of described iron gallium alloy rod is connected with base by screw thread, and upper end is connected with coupling shaft by screw thread.
By technique scheme, described spring is in compressive state in original state, makes it give iron gallium alloy rod and applies certain prestress, make its working range larger.
By technique scheme, described spring and spring fitting chamber transition fit.
By technique scheme, described output shaft and spring fitting chamber adopt clearance fit, and coupling shaft adopts clearance fit to be connected with the center pit of coil rack.
Beneficial effect acquired by the utility model is: the utility model can bear the load of alternation, and its Curie temperature is higher, can use in rugged environment, the impact that environment causes sensor can be overcome, and iron gallium alloy rod club shaped structure, measurement performance is better, and measuring error is less, and measurement result is easier to read.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Wherein 1 is base, and 2 is coil rack, and 3 is drive coil, and 4 is iron gallium alloy rod, and 5 is coupling shaft, and 6 is spring, and 7 is output shaft, and 8 is shell, and 9 is spring fitting chamber, and 10 is Hall element, and 11 is inductive coil, and 12 is 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 iron gallium alloy displacement transducer, the shell 8 comprising base 1 and be arranged on base, formation installation cavity is enclosed between described shell 8 inwall and base 1, coil rack 2 is provided with in installation cavity, the outer peripheral face of coil rack 2 is arranged with drive coil 3, coil rack 2 is provided with central shaft hole, iron gallium alloy rod 4 is provided with in this central shaft hole, wherein, the aperture of the central shaft hole of coil rack 2 is greater than the external diameter of iron gallium alloy rod 4, make to there is gap between coil rack 2 and iron gallium alloy rod 4, this gap is utilized to be pasted with Hall element 10 on iron gallium alloy rod, resistance strain gage 12 and be wound with inductive coil 11.The lower end of iron gallium alloy rod 4 is threaded with base 1, the upper end of iron gallium alloy rod 4 is connected with coupling shaft 5, the top of described coupling shaft 5 arranges spring fitting chamber 9, wherein, the upper end in described spring fitting chamber 9 is positioned at the center pit of shell 8, lower end is positioned at the central shaft hole of coil rack 2, spring 6 is provided with in spring fitting chamber 9, wherein, spring 6 and spring fitting chamber 9 adopt transition fit to make both comparatively firm linking together, output shaft 6 is connected with in the upper end of spring 6, the lower end of described output shaft is provided with backstop half the circumference of the sleeve where it joins the shoulder, described backstop half the circumference of the sleeve where it joins the shoulder matches with the stepped hole of shell, and output shaft and spring fitting chamber 9 adopt clearance fit, coupling shaft 5 adopts clearance fit to be connected with the center pit of coil rack 2, total is enable to transmit motion and power preferably.
In the present embodiment, base 1 and shell 8 are connected to form the axisymmetric cylindrical structure in center, iron gallium alloy rod 4 is positioned at the center, described coil rack 2 is placed in installation cavity in " work " shape structure, two ends and the installation cavity inwall of its coil rack 2 are close to, and having between coil rack 2 two ends can for the space of drive coil 3 winding, and the upper end of coil rack 3 abuts installation cavity upper inside wall, the lower end of coil rack abuts base inner wall, forms compact installation cooperation structure.
In the present embodiment, because iron gallium alloy rod 4 has good mechanical property, in its two ends machining screw section, and can be connected with coupling shaft 5 and base 1 by thread segment, be convenient to installation and removal.
In the present embodiment, described spring 6 is in compressive state in original state, makes it give iron gallium alloy rod and applies certain prestress, make its working range larger.
By output shaft 7, displacement is passed to spring 6 when exterior object exists displacement, also power is created while spring 6 produces displacement, power is delivered to iron gallium alloy rod 4 by coupling shaft 5, just the power that spring 6 is subject to can be learnt by the power measured on iron gallium alloy rod 4, thus just can be learnt the displacement of spring 6 by Hooke's law, thus learn outside displacement.
While external displacement acts on displacement transducer, apply a certain size electric current to drive coil 3, thus produce certain magnetic field in the inside of sensor, be wrapped in inductive coil 11 on iron gallium alloy rod 4 and produce certain induced voltage.Meanwhile, resistance strain gage 12 is for measuring the strain that the iron gallium alloy rod 4 when applying displacement and bias current produces; The size of the magnetic field intensity of Hall element 10 survey sensor inside.Inductive coil 11 measures the induced voltage and magnetic induction density that displacement and bias current cause jointly.The utility model structure is simple, easy installation and reliable, and is convenient to carrying, goes for the measurement of a lot of occasion, has good application prospect.
Claims (7)
1. an iron gallium alloy displacement transducer, comprise base and be arranged on the shell on base, formation installation cavity is enclosed between described outer casing inner wall and base, coil rack is provided with in installation cavity, the outer peripheral face of coil rack is arranged with drive coil, coil rack is provided with central shaft hole, iron gallium alloy rod is provided with in this central shaft hole, iron gallium alloy rod is arranged with inductive coil, resistance strain gage, Hall element, the lower end of iron gallium alloy rod is connected with whorl of base, it is characterized in that: the upper end of iron gallium alloy rod is connected with coupling shaft, the top of described coupling shaft arranges spring fitting chamber, spring is provided with in spring fitting chamber, the upper end of spring is provided with output shaft, described output shaft can along the downward axial slip of housing.
2. a kind of iron gallium alloy displacement transducer according to claim 1, it is characterized in that, the lower end of described output shaft is provided with backstop half the circumference of the sleeve where it joins the shoulder, and described backstop half the circumference of the sleeve where it joins the shoulder matches with the stepped hole of shell.
3. a kind of iron gallium alloy displacement transducer according to claim 1 and 2, is characterized in that, the upper end in described spring fitting chamber is positioned at the center pit of shell, and lower end is positioned at the central shaft hole of coil rack.
4. a kind of iron gallium alloy displacement transducer according to claim 1 and 2, is characterized in that, the lower end of described iron gallium alloy rod is connected with base by screw thread, and upper end is connected with coupling shaft by screw thread.
5. a kind of iron gallium alloy displacement transducer according to claim 1 and 2, it is characterized in that, described spring is in compressive state in original state.
6. a kind of iron gallium alloy displacement transducer according to claim 1 and 2, is characterized in that, described spring and spring fitting chamber transition fit.
7. a kind of iron gallium alloy displacement transducer according to claim 1 or 2, it is characterized in that, described output shaft and spring fitting chamber adopt clearance fit, and coupling shaft adopts clearance fit to be connected with the center pit of coil rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921729.2U CN205120024U (en) | 2015-11-18 | 2015-11-18 | Iron gallium alloy displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921729.2U CN205120024U (en) | 2015-11-18 | 2015-11-18 | Iron gallium alloy displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205120024U true CN205120024U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520921729.2U Expired - Fee Related CN205120024U (en) | 2015-11-18 | 2015-11-18 | Iron gallium alloy displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205120024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152925A (en) * | 2016-08-29 | 2016-11-23 | 西安旭彤电子科技股份有限公司 | A kind of spring displacement transducer |
| CN112325757A (en) * | 2020-10-28 | 2021-02-05 | 东风汽车有限公司 | Differential transformer type elastomer sensor |
-
2015
- 2015-11-18 CN CN201520921729.2U patent/CN205120024U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152925A (en) * | 2016-08-29 | 2016-11-23 | 西安旭彤电子科技股份有限公司 | A kind of spring displacement transducer |
| CN112325757A (en) * | 2020-10-28 | 2021-02-05 | 东风汽车有限公司 | Differential transformer type elastomer sensor |
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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 |