CN203274670U - Transformer type displacement measurement apparatus - Google Patents
Transformer type displacement measurement apparatus Download PDFInfo
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- CN203274670U CN203274670U CN 201320323784 CN201320323784U CN203274670U CN 203274670 U CN203274670 U CN 203274670U CN 201320323784 CN201320323784 CN 201320323784 CN 201320323784 U CN201320323784 U CN 201320323784U CN 203274670 U CN203274670 U CN 203274670U
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- transformer type
- type displacement
- displacement measurement
- push rod
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Abstract
The utility model discloses a transformer type displacement measurement apparatus, comprising a front cover plate, a coil framework, a reset spring, a spring retainer ring, a mandril, a primary coil, and a secondary coil. A guiding hole for the mandril is positioned on the front cover plate; the mandril is connected to the reset spring by passing through the guiding hole for the mandril; the reset spring is positioned within a deep groove of the coil framework; the primary coil and the secondary coil are wound on the coil framework in an overlaying manner. The difference between the transformer type displacement measurement apparatus and the common linear differential transformer displacement transducer resides in the overlaying and winding modes of the two set coils. Reduction of one set coil and design of integrating a magnet core and the mandril into one piece greatly reduce volume of the transformer type displacement measurement apparatus, and are applicable to an occasion where the space is limited and measurement displacement is large. In particularly, the transformer type displacement measurement apparatus can reduce the influence upon the physical property and mechanical property of a structure by the measurement apparatus.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly a kind of transformer type displacement measurement mechanism.
Background technology
Linear variable difference transformer (LVDT) formula displacement meter is present widely used a kind of displacement transducer, and its feature is highly sensitive, and the good stability of measurement is operated in the range of linearity, is easy to demarcate.But by the linear variable difference transformer formula structure that 3 groups of coils form, belong to linear displacement transducer due to this kind displacement transducer, wherein one group is drive coil, and other two groups is inductive coil.This working sensor is limited by linear error at linearity range, the range of movement of magnetic core in inductive coil is limited, and movably the position utilization factor is lower in coil to cause magnetic core.So the size of linear variable difference transformer formula displacement transducer is generally all larger, the LVDT displacement transducer that range is 12cm, its push rod add more than the length dimension of agent structure under free state reach 80cm, and be comparatively heavy.In Practical Project and scientific research development test, often need displacement transducer is placed in inside configuration, measure the relative displacement of inside configuration, this just requires the size of sensor the smaller the better, make imbedding the physical and mechanical properties impact of structure of sensor enough little, to greatest extent the internal displacement of Measurement accuracy structure.
The utility model content
Goal of the invention: it is large that the purpose of this utility model is to solve existing displacement meter volume, comparatively heavy, and the problem that is unsuitable for being applied in the narrow and small place of outside installing space or is arranged on inside configuration.
Technical scheme: the utility model provides following technical scheme: a kind of transformer type displacement measurement mechanism, comprise front shroud, coil rack, back-moving spring, spring collar, and also comprised push rod, primary coil and secondary coil; Front shroud is provided with the push rod pilot hole, and push rod passes the push rod pilot hole and is connected with the interior back-moving spring of coil rack, and back-moving spring is positioned at the coil rack deep trouth, stack coiling primary coil and secondary coil on coil rack.
Principle of work: principle of work of the present utility model: in the raw the time, push rod is ejected under the effect of back-moving spring when the transformer type displacement measurement mechanism, and at this moment the induced voltage in secondary coil is minimum.Variation along with the insertion depth of push rod, magnetic flux in secondary coil is along with increase, its mutual voltage is also just followed increase, set up one-to-one relationship between induced voltage in push rod insertion depth and secondary coil by demarcation, like this by detecting the voltage in secondary coil, just can determine the insertion depth of displacement measuring device push rod, thereby also just measure the relative displacement between testee and transformer type displacement measurement mechanism.
Beneficial effect: the utility model compared with prior art: primary coil of the present utility model and secondary coil are pressed transformer wire coil winding stack coiling, reduced by one group of coil, and the design of adopting magnetic core and push rod to unite two into one, greatly dwindled the volume of transformer type displacement measurement mechanism, especially be fit to be arranged on limited location but want
Ask and measure the larger occasion of displacement, can reduce to greatest extent the impact on the Physical and mechanical properties of structure imbedded of transformer type displacement measurement mechanism.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is Standard figure of the present utility model.
Embodiment
A kind of transformer type displacement measurement mechanism, is characterized in that: comprise front shroud 1, coil rack 2, back-moving spring 3, spring collar 4, also comprised push rod 5, primary coil 6 and secondary coil 7 as shown in Figure 1; Front shroud 1 is provided with the push rod pilot hole, and push rod 5 passes the push rod pilot hole and is connected with coil rack 2 interior back-moving springs 3, and back-moving spring 3 is positioned at coil rack 2 deep trouths, presses certain turn ratio stack coiling primary coil 6 and secondary coil 7 on coil rack 2.Push rod 5 is provided with spring collar 4 with back-moving spring 3 junctions, be used for preventing that push rod 5 from skidding off the transformer type displacement measurement mechanism, select suitable aperture, make push rod 5 can be free to slide in the pilot hole of front shroud 1 and can not produce and rock, the lead-in wire of primary coil 6 and secondary coil 7 is drawn by wire lead slot 9, is provided with insulation film 10 between wire lead slot 9 and back shroud 8.Push rod 5 employings are made with the magnetic susceptibility metal material.Coil rack 2 skins are provided with shell 11.
In the raw the time, push rod 5 is ejected under the effect of back-moving spring 3 when the transformer type displacement measurement mechanism, and at this moment the induced voltage in secondary coil 7 is minimum.Insertion along with push rod 5, magnetic flux in two groups of coils is along with increase, its mutual voltage is also with regard to corresponding increase, set up one-to-one relationship between induced voltage in push rod 5 insertion depths and secondary coil 7 by demarcation, like this by detecting the voltage in secondary coil 7, just can determine the insertion depth of displacement measuring device push rod 5, thereby also just measure the relative displacement between testee and transformer type displacement measurement mechanism.
Compare with general LVDT displacement transducer, two groups of coils of the present utility model adopt the mode coiling of lap wound, reduced simultaneously by one group of secondary coil, and the design of adopting magnetic core and push rod to unite two into one, greatly dwindled the volume of transformer type displacement measurement mechanism, especially be fit to be arranged on limited location but require measure the larger occasion of displacement, can reduce to greatest extent the impact on the Physical and mechanical properties of structure imbedded of transformer type displacement measurement mechanism.
Claims (4)
1. transformer type displacement measurement mechanism, it is characterized in that: comprise front shroud (1), coil rack (2), back-moving spring (3), spring collar (4), it is characterized in that: also comprised push rod (5), primary coil (6) and secondary coil (7); Front shroud (1) is provided with the push rod pilot hole, push rod (5) passes the push rod pilot hole and is connected with the interior back-moving spring (3) of coil rack (2), back-moving spring (3) is positioned at coil rack (2) deep trouth, coil rack (2) upper stack coiling primary coil (6) and secondary coil (7).
2. transformer type displacement measurement mechanism according to claim 1 is characterized in that: described push rod (5) is provided with spring collar (4) with back-moving spring (3) junction.
3. transformer type displacement measurement mechanism according to claim 2 is characterized in that: described primary coil (6) and secondary coil (7) are upper by the coiling that superposes of transformer mode at coil rack (2).
4. transformer type displacement measurement mechanism according to claim 3 is characterized in that: described push rod (5) adopts to be made with the magnetic susceptibility metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320323784 CN203274670U (en) | 2013-06-06 | 2013-06-06 | Transformer type displacement measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320323784 CN203274670U (en) | 2013-06-06 | 2013-06-06 | Transformer type displacement measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203274670U true CN203274670U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320323784 Expired - Fee Related CN203274670U (en) | 2013-06-06 | 2013-06-06 | Transformer type displacement measurement apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203274670U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222696A (en) * | 2015-10-22 | 2016-01-06 | 成都理工大学 | The high and cold LVDT measurement mechanism of high temperature and measuring method |
| CN105588508A (en) * | 2016-03-16 | 2016-05-18 | 上海筑邦测控科技有限公司 | Method for performing displacement measurement by using LVDT and sensor iron core mounting structure |
| CN106500580A (en) * | 2016-09-26 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Eddy current displacement sensor and its probe and coil |
| RU169476U1 (en) * | 2016-10-06 | 2017-03-21 | Акционерное общество "Научно-технический центр "Диапром" | LINEAR MOVEMENT CONVERTER |
| CN109342186A (en) * | 2018-12-19 | 2019-02-15 | 中国科学院地球化学研究所 | A kind of LVDT displacement sensor under high temperature and pressure |
| CN110243327A (en) * | 2019-06-14 | 2019-09-17 | 上海交通大学 | The monodisplacement sensor and method of measurement soil and underground structure dynamic Relative sliding |
| CN114427824A (en) * | 2021-12-16 | 2022-05-03 | 洛阳轴承研究所有限公司 | Method for measuring axial displacement of magnetic bearing rotor |
-
2013
- 2013-06-06 CN CN 201320323784 patent/CN203274670U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222696A (en) * | 2015-10-22 | 2016-01-06 | 成都理工大学 | The high and cold LVDT measurement mechanism of high temperature and measuring method |
| CN105222696B (en) * | 2015-10-22 | 2018-07-24 | 成都理工大学 | The measurement method of the high and cold LVDT measuring devices of high temperature |
| CN105588508A (en) * | 2016-03-16 | 2016-05-18 | 上海筑邦测控科技有限公司 | Method for performing displacement measurement by using LVDT and sensor iron core mounting structure |
| CN106500580A (en) * | 2016-09-26 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Eddy current displacement sensor and its probe and coil |
| RU169476U1 (en) * | 2016-10-06 | 2017-03-21 | Акционерное общество "Научно-технический центр "Диапром" | LINEAR MOVEMENT CONVERTER |
| CN109342186A (en) * | 2018-12-19 | 2019-02-15 | 中国科学院地球化学研究所 | A kind of LVDT displacement sensor under high temperature and pressure |
| CN110243327A (en) * | 2019-06-14 | 2019-09-17 | 上海交通大学 | The monodisplacement sensor and method of measurement soil and underground structure dynamic Relative sliding |
| CN114427824A (en) * | 2021-12-16 | 2022-05-03 | 洛阳轴承研究所有限公司 | Method for measuring axial displacement of magnetic bearing rotor |
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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: 20131106 Termination date: 20160606 |