CN209623609U - A kind of direct current back springing type LVDT linear displacement transducer - Google Patents
A kind of direct current back springing type LVDT linear displacement transducer Download PDFInfo
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- CN209623609U CN209623609U CN201920712623.XU CN201920712623U CN209623609U CN 209623609 U CN209623609 U CN 209623609U CN 201920712623 U CN201920712623 U CN 201920712623U CN 209623609 U CN209623609 U CN 209623609U
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- direct current
- linear displacement
- displacement transducer
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Abstract
The utility model relates to a kind of direct current back springing type LVDT linear displacement transducers, shell, line packet and iron core including ecto-entad setting, the line, which is wrapped, is wound with coil, the coil includes the first secondary coil, primary coil and second subprime coil, and first secondary coil, primary coil and second subprime coil are successively wound to be wrapped online；In a tubular form, the both ends of shell are provided with capping to the shell；Resistance to crimp body is provided between the line packet and iron core, the resistance to crimp body is horizontally installed in shell, and resistance to crimp body is internally provided with iron core, and the iron core is push rod.The utility model makes iron core smooth motion in resistance to crimp body, improves measurement accuracy.
Description
Technical field
The utility model relates to sensor technical fields more particularly to a kind of direct current back springing type LVDT straight-line displacement to sense
Device.
Background technique
Linear variable difference transformer (Linear Variable Differential Transformer, LVDT) can
It is interpreted simply as the movable transformer of iron core.It is by a primary coil, two secondary coils, iron core, coil rack, shells etc.
Component composition.Iron core is the moving element of LVDT, when being moved freely in the coil in hollow molding, two of secondary coil
The difference of output voltage is displaced linear with iron core.Therefore, by measuring voltage difference, it can be obtained by iron core after calculating
Position.LVDT is applied in many industrial control systems, is mainly used for measuring linear displacement signal.LVDT displacement sensor
Using non-contact structure, high sensitivity, high duplication, high reliability, ambient adaptability is strong.Iron core is in the coil of hollow molding
When moving freely, since coil inside is the slightly larger hollow structure of diameter, the component that some is moved left and right without being suitable for iron core
Keep iron core mobile in coil inside, at this time can iron core can teetertotter or deviate in the process of moving, due to LVDT
Displacement sensor is suitable for measurement accuracy and with higher sensitivity occasion mostly, therefore the shaking of iron core will cause LVDT displacement sensing
The not high problem of device measurement accuracy.
Summary of the invention
The utility model will cause LVDT displacement sensor precision not for the shaking of iron core of the existing technology
High problem provides a kind of direct current back springing type LVDT linear displacement transducer, makes iron core smooth motion in resistance to crimp body, improves
Measurement accuracy.
In order to achieve the object, the technical scheme adopted by the utility model is
A kind of direct current back springing type LVDT linear displacement transducer, shell, line packet and iron core including ecto-entad setting, institute
It states line and wraps and be wound with coil, the coil includes the first secondary coil, primary coil and second subprime coil, the first time
Grade coil, primary coil and second subprime coil successively wind and wrap online；In a tubular form, the both ends of shell are provided with the shell
Capping；Resistance to crimp body is provided between the line packet and iron core, the resistance to crimp body is horizontally installed in shell, resistance to crimp body
It is internally provided with iron core, the iron core is push rod.
Further, the resistance to crimp body includes connector and guide sleeve, and the end of the connector is annular in shape, connector
The stepped distribution in outside, connector is internally provided with cavity, and the end of cavity is provided with step, and described lead is set on
It is fixedly connected on step and with connector；The outside of shell is arranged in the connector.
Further, the other end of the guide sleeve is provided with T shape plug；The central part of shell is arranged in the guide sleeve
Position, the plug of guide sleeve end are embedded in capping.
Further, one end of the push rod is hemispherical, and push rod outer wall is arranged with spring, and the spring is arranged in cavity
Interior, the other end of push rod is arranged in guide sleeve.
Further, the guide sleeve, plug and the junction of capping are provided with O-ring seals.
Further, hole for injecting glue is offered on the shell, from hole for injecting glue to injecting epoxy resin between shell and coil.
Further, the coil is reserved with lead-out wire, and the lead-out wire leads to hull outside.
Through the above technical solutions, the utility model has the following beneficial effects: by setting resistance to crimp body, be placed in iron core
It is moved in resistance to crimp body, extraneous interference when reducing mobile inside direct-on-line circle, using effect is more preferable, to improve survey
Accuracy of measurement and response speed；Resistance to crimp body is made of stainless steel magnetic separator simultaneously, plays the work of mechanical protection and radiation protection
With；By filling epoxy resin between shell and coil, there is certain capability of resistance to radiation, while the two is cured as one
Body will not generate the failures such as broken string or cracking.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of direct current back springing type LVDT linear displacement transducer of the utility model.
Fig. 2 is a kind of structural representation of the resistance to crimp body of direct current back springing type LVDT linear displacement transducer of the utility model
Figure.
Fig. 3 is a kind of cross-sectional view of Fig. 2 of direct current back springing type LVDT linear displacement transducer of the utility model.
Fig. 4 is a kind of schematic diagram of the lead-out wire of direct current back springing type LVDT linear displacement transducer of the utility model.
Numbering in the drawing are as follows: 1 is connector, and 2 be spring, and 3 be push rod, and 4 be line packet, and 5 be shell, and 6 be second subprime line
Circle, 7 be sealing ring, and 8 be the first secondary coil, and 9 be primary coil, and 10 be guide sleeve, and 11 be plug, and 12 be hole for injecting glue.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further detail the utility model:
As shown in Fig. 1 ~ 4, a kind of direct current back springing type LVDT linear displacement transducer, the shell 5 being arranged including ecto-entad,
Line packet 4 and iron core, are wound with coil on the line packet 4, and the coil includes the first secondary coil 8, primary coil 9 and second
Grade coil 6, first secondary coil 8, primary coil 9 and second subprime coil 6 are successively wound on online packet 4；The shell 5
In a tubular form, the both ends of shell 5 are provided with capping；Resistance to crimp body is provided between the line packet 4 and iron core, the resistance to crimp body is horizontal
To being arranged in shell 5, resistance to crimp body is internally provided with iron core, and the iron core is push rod 3.
It is preferably carried out mode as one kind, specifically, the resistance to crimp body includes connector 1 and leads as shown in Fig. 2 ~ 3
Set 10, the end of the connector 1 is annular in shape, and the stepped distribution in the outside of connector 1, connector 1 is internally provided with
Cavity, the end of cavity are provided with step, and the guide sleeve 10 is arranged on step and is fixedly connected with connector 1；The connection
The outside of shell 5 is arranged in body 1.It should be noted that the material of the connector 1 is all made of the production of stainless steel magnetic separator；
Connector 1, guide sleeve 10 and plug 11 should weld with one heart, and weld smooth, smooth.
The other end of the guide sleeve 10 is provided with T shape plug 11；The centre of shell 5 is arranged in the guide sleeve 10,
The plug 11 of 10 end of guide sleeve is embedded in capping.
It is preferably carried out mode as one kind, one end of the push rod 3 is hemispherical, and the end of push rod 3 is easier to and is tested
Object connection, is convenient for measuring；3 outer wall of push rod is arranged with spring 2, and the spring 2 is arranged in cavity, and the other end of push rod 3 is set
It sets in guide sleeve 10.
To advanced optimize product structure, the junction of the guide sleeve 10, plug 11 and capping is provided with O-ring seals
7。
To advanced optimize product structure, hole for injecting glue 12 is offered on the shell 5, from hole for injecting glue 12 to shell 5 and line
Epoxy resin is injected between circle, is solidified coil and shell 5 and is integrated.
To advanced optimize product structure, as shown in figure 4, the coil is reserved with lead-out wire, the lead-out wire is led to
Hull outside；Specifically, the lead-out wire of the primary coil 9 is electric signal input, respectively red and yellow line；First grade
The lead-out wire of coil 8 and second subprime coil 6 is electric signal output, respectively white and green, yellow and brown.
In use, the end of push rod 3 is connect with testee, at this point, the other end of push rod 3 is in primary coil 9
Center；When measured object generates displacement, the transverse shifting in guide sleeve 10 of push rod 3 is driven, deviate center and generates fortune
Dynamic displacement, the voltage difference that two secondary coils generate, and be converted into voltage signal and exported from lead-out wire；Push rod 3 is entirely moved through
Cheng Zhongjun is moved in resistance to crimp body, avoids the interference of outer bound pair push rod 3, and push rod 3 will not be generated and be teetertottered, and improves survey
Accuracy of measurement.
The parameter of the LVDT linear displacement transducer of the utility model design is respectively: linear route is ± 7.5mm, linearly
Degree control is within 0.5%, operating oil pressure 6.3Mp, and each section of 2200 circles of coil motivate resistance 150 ± 5%；The biography is substantially met
Use demand of the sensor in every profession and trade.
The embodiment of the above, the only preferred embodiment of the utility model not limit the utility model
Practical range, therefore all equivalent change or modifications done according to structure, feature and principle described in the utility model patent range,
It should be included in present utility model application the scope of the patents.
Claims (7)
1. a kind of direct current back springing type LVDT linear displacement transducer, shell (5), line packet (4) and iron including ecto-entad setting
Core, coil is wound on the line packet (4), and the coil includes the first secondary coil (8), primary coil (9) and second subprime
Coil (6), first secondary coil (8), primary coil (9) and second subprime coil (6) are successively wound on online packet (4)；
It is characterized in that, the shell (5) is in a tubular form, the both ends of shell (5) are provided with capping；It is set between the line packet (4) and iron core
It is equipped with resistance to crimp body, the resistance to crimp body is horizontally installed in shell (5), and resistance to crimp body is internally provided with iron core, the iron
Core is push rod (3).
2. a kind of direct current back springing type LVDT linear displacement transducer according to claim 1, which is characterized in that the pressure resistance
Junctor includes connector (1) and guide sleeve (10), and the end of the connector (1) is annular in shape, and the outside of connector (1) is in ladder
Shape distribution, connector (1) are internally provided with cavity, and the end of cavity is provided with step, and the guide sleeve (10) is arranged in step
Above and with connector (1) it is fixedly connected；Outside of connector (1) setting in shell (5).
3. a kind of direct current back springing type LVDT linear displacement transducer according to claim 2, which is characterized in that the guide sleeve
(10) the other end is provided with T shape plug (11)；The guide sleeve (10) is arranged in the centre of shell (5), guide sleeve (10)
The plug (11) of end is embedded in capping.
4. a kind of direct current back springing type LVDT linear displacement transducer according to claim 3, which is characterized in that the push rod
(3) one end is hemispherical, and push rod (3) outer wall is arranged with spring (2), and the spring (2) is arranged in cavity, push rod (3)
Other end setting is in guide sleeve (10).
5. a kind of direct current back springing type LVDT linear displacement transducer according to claim 3, which is characterized in that the guide sleeve
(10), the junction of plug (11) and capping is provided with O-ring seals (7).
6. a kind of direct current back springing type LVDT linear displacement transducer according to claim 1, which is characterized in that the shell
(5) hole for injecting glue (12) are offered on, inject epoxy resin from hole for injecting glue (12) between shell (5) and coil.
7. a kind of direct current back springing type LVDT linear displacement transducer according to claim 1, which is characterized in that the coil
It is reserved with lead-out wire, the lead-out wire leads to hull outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712623.XU CN209623609U (en) | 2019-05-17 | 2019-05-17 | A kind of direct current back springing type LVDT linear displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712623.XU CN209623609U (en) | 2019-05-17 | 2019-05-17 | A kind of direct current back springing type LVDT linear displacement transducer |
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| CN209623609U true CN209623609U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920712623.XU Active CN209623609U (en) | 2019-05-17 | 2019-05-17 | A kind of direct current back springing type LVDT linear displacement transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059995A (en) * | 2019-12-28 | 2020-04-24 | 浙江大学 | Self-driven displacement sensor based on friction nano generator |
| CN114184118A (en) * | 2021-12-13 | 2022-03-15 | 中国核动力研究设计院 | High-temperature-resistant strong-radiation LVDT sensor and assembly process thereof |
-
2019
- 2019-05-17 CN CN201920712623.XU patent/CN209623609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059995A (en) * | 2019-12-28 | 2020-04-24 | 浙江大学 | Self-driven displacement sensor based on friction nano generator |
| CN114184118A (en) * | 2021-12-13 | 2022-03-15 | 中国核动力研究设计院 | High-temperature-resistant strong-radiation LVDT sensor and assembly process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A DC rebound LVDT linear displacement sensor Effective date of registration: 20210305 Granted publication date: 20191112 Pledgee: Bank of China Limited Anyang Branch Pledgor: ANYANG HUAYANG ELECTRIC MAGNET MANUFACTURING Co.,Ltd. Registration number: Y2021980001448 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230327 Granted publication date: 20191112 Pledgee: Bank of China Limited Anyang Branch Pledgor: ANYANG HUAYANG ELECTRIC MAGNET MANUFACTURING CO.,LTD. Registration number: Y2021980001448 |