CN102252594A - Draw bar displacement sensor - Google Patents
Draw bar displacement sensor Download PDFInfo
- Publication number
- CN102252594A CN102252594A CN2011101854195A CN201110185419A CN102252594A CN 102252594 A CN102252594 A CN 102252594A CN 2011101854195 A CN2011101854195 A CN 2011101854195A CN 201110185419 A CN201110185419 A CN 201110185419A CN 102252594 A CN102252594 A CN 102252594A
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- China
- Prior art keywords
- shell
- pull bar
- casing
- slide block
- draw bar
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Abstract
The invention provides a draw bar displacement sensor, relating to the technical filed of sensors and disclosed for meeting requirements of different measurement environments and prolonging the service life of slide blocks. The sensor comprises a casing, a waveguide tube, a draw bar and a circuit board; the casing is a straight tube with openings at the front end and the rear end, the openings at the front end and the rear end are respectively sealed by an end cover; the waveguide tube is inserted in the casing, the circuit board is fixed in the casing and is provided with a measurement circuit connected with the waveguide tube, the casing is internally provided with a liner guide rail parallel to the axis of the waveguide tube, and the guide rail is provided with a slide block on which a magnet is fixedly arranged; the draw bar is slidably inserted in the casing, the front end of the draw bar is fixedly connected with the slide block, and the rear end of the draw bar extends backwards to the exterior of the casing; and the cover end at the rear end of the casing is internally and fixedly provided with a guide sleeve for guiding the sliding of the draw bar, and the body of the draw bar penetrates through the guide sleeve in a movable connection mode. The sensor provided by the invention has high measurement accuracy and the slide block has long service life.
Description
Technical field
The present invention relates to sensor technology, particularly relate to a kind of technology of pull bar displacement transducer.
Background technology
Magnetostrictive displacement sensor is a kind ofly accurately to measure the non-cpntact measurement utensil of the actual displacement value of detected product in the absolute position of detected activity magnet by the contactless observation and control technology in inside, has high resolving power, high linearity, output of absolute magnitude position signalling and degree of protection height remarkable advantages such as (IP69) can satisfy the demand of most production scenes.
All be provided with waveguide and metering circuit in the shell of existing magnetostrictive displacement sensor, its shell is provided with the slide block in axial sliding along waveguide, and magnet is housed on slide block, and is fixed with a pull bar on slide block.When having the magnetostrictive displacement sensor Displacement Measurement now, the shell of magnetostrictive displacement sensor is fixed, measured object and pull bar is affixed, when moving, measured object draws slide block moving axially along waveguide by pull bar, metering circuit is by the magnet positions on the waveguide induction slide block, and then calculates the displacement of measured object.
The defective of existing magnetostrictive displacement sensor is: the pull bar that the guide rail that slide block and guide slides move, traction slide block move all is positioned at the outside of shell, and slide block, guide rail and pull bar are impaired because of colliding with easily on the one hand; The traction less stable of slide block on the other hand, pull bar traction slide block also causes the traction angle deviation easily when moving, thereby have influence on the sliding speed and the measuring accuracy of slide block, and be partial to an angle for a long time and can make slide block stressed irregular, serious wear, thereby have influence on the serviceable life of slide block, moreover, can't satisfy the measurement requirement of occasions such as liquid environment, small space environment because the slide block right and wrong are enclosed.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical matters to be solved by this invention provides a kind of measuring accuracy height, the slide block long service life, and the traction of slide block stability is high, can satisfy the pull bar displacement transducer of the measurement requirement of occasions such as liquid environment, small space environment.
In order to solve the problems of the technologies described above, a kind of pull bar displacement transducer provided by the present invention comprises shell, waveguide, pull bar and circuit board; Described shell is the straight tube of a rear and front end opening, and each is sealed its rear and front end peristome by an end cap; Described waveguide is inserted in the shell, and its parallel axes is in the central axis of shell; Described circuit board is fixing in the enclosure, and is provided with the metering circuit that connects waveguide, and the front end end cap of described shell is provided with the connector that connects metering circuit; It is characterized in that: be provided with the linear guide rail that is parallel to the waveguide axis in the described shell, described guide rail is provided with one along the slide block of its rail to slip, is installed with a magnet on the described slide block;
Described pull bar slides and is inserted in the shell, the guide rail of its parallel axes in shell, and the front end and the slide block of pull bar are affixed, and its rear end extends the outside of shell backward;
Be installed with an orienting sleeve that is used for the pull bar slide-and-guide in the rear end end cap of described shell, the shaft of described pull bar passes orienting sleeve with movable connection method.
Further, the junction surface between each end cap and the shell all seals with waterproof grommet.
Pull bar displacement transducer provided by the invention, the guide rail that slide block and guide slides move all is positioned at shell, can be not impaired because of colliding with, and can satisfy the measurement requirement of occasions such as liquid environment, small space environment, and in the end cap of the rear end of shell, be provided with the orienting sleeve that is used for the pull bar slide-and-guide, can effectively reduce the traction angle deviation, thereby effectively improve the traction stability of slide block, and then improve the serviceable life of measuring accuracy and slide block.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the pull bar displacement transducer of the embodiment of the invention;
Fig. 2 is that the master of the pull bar displacement transducer of the embodiment of the invention looks cut away view;
Fig. 3 is the stereographic map of the pull bar displacement transducer of the embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1-Figure 3, a kind of pull bar displacement transducer that the embodiment of the invention provided comprises shell 4, waveguide 1, pull bar 8 and circuit board 3;
Described shell 4 is straight tubes of a rear and front end opening, and each is sealed its rear and front end peristome by an end cap 2, and the junction surface between each end cap 2 and the shell 4 is all with waterproof grommet 6 sealings;
Described waveguide 1 is inserted in the shell 4, and its parallel axes is in the central axis of shell 4;
Described circuit board 3 is fixed in the shell 4, and is provided with the metering circuit that connects waveguide 1, and the front end end cap 2 of described shell 4 is provided with the connector 13 that connects metering circuit;
It is characterized in that: be provided with the linear guide rail 11 that is parallel to the waveguide axis in the described shell 4, described guide rail 11 is provided with one along the slide block 5 of its rail to slip, is installed with a magnet 7 on the described slide block 5;
Described pull bar 8 slides and is inserted in the shell 4, the guide rail 11 of its parallel axes in shell 4, and the front end of pull bar 8 and slide block 5 are affixed, and its rear end extends the outside of shell 4 backward;
Be installed with an orienting sleeve 10 that is used for pull bar 8 slide-and-guides in the rear end end cap 2 of described shell 4, the shaft of described pull bar 8 passes orienting sleeve 10 with movable connection method, and the rear end of pull bar 8 is provided with a spherical plain bearing rod end 9.
In the embodiment of the invention, described metering circuit is a prior art.
During the displacement of embodiment of the invention Measuring Object, shell is fixed on lands on the thing, the spherical plain bearing rod end of measured object and back end of tie rod is affixed; When moving, measured object draws slide block moving axially along waveguide by pull bar, magnet on the slide block also moves thereupon, along with moving of magnet, magnetic field around the waveguide changes, metering circuit induces magnet positions by the changes of magnetic field around the waveguide, and calculates the displacement of measured object by the displacement meter that calculates magnet.
Claims (2)
1. a pull bar displacement transducer comprises shell, waveguide, pull bar and circuit board; Described shell is the straight tube of a rear and front end opening, and each is sealed its rear and front end peristome by an end cap; Described waveguide is inserted in the shell, and its parallel axes is in the central axis of shell; Described circuit board is fixing in the enclosure, and is provided with the metering circuit that connects waveguide, and the front end end cap of described shell is provided with the connector that connects metering circuit; It is characterized in that: be provided with the linear guide rail that is parallel to the waveguide axis in the described shell, described guide rail is provided with one along the slide block of its rail to slip, is installed with a magnet on the described slide block;
Described pull bar slides and is inserted in the shell, the guide rail of its parallel axes in shell, and the front end and the slide block of pull bar are affixed, and its rear end extends the outside of shell backward;
Be installed with an orienting sleeve that is used for the pull bar slide-and-guide in the rear end end cap of described shell, the shaft of described pull bar passes orienting sleeve with movable connection method.
2. pull bar displacement transducer according to claim 1 is characterized in that: the junction surface between each end cap and the shell all seals with waterproof grommet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101854195A CN102252594A (en) | 2011-07-04 | 2011-07-04 | Draw bar displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101854195A CN102252594A (en) | 2011-07-04 | 2011-07-04 | Draw bar displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252594A true CN102252594A (en) | 2011-11-23 |
Family
ID=44980022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101854195A Pending CN102252594A (en) | 2011-07-04 | 2011-07-04 | Draw bar displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252594A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162608A (en) * | 2011-12-09 | 2013-06-19 | 上海球栅测量系统有限公司 | Displacement measuring device |
| CN106979754A (en) * | 2017-05-17 | 2017-07-25 | 浙江工业大学 | A kind of waterproof rock displacement measurement apparatus |
| CN108020149A (en) * | 2017-03-13 | 2018-05-11 | 湖南科技大学 | The accurate gage in inner space |
| CN108868738A (en) * | 2018-07-20 | 2018-11-23 | 杭州电子科技大学 | A kind of subglacial base rock boring TT&C system |
| CN112344839A (en) * | 2020-10-13 | 2021-02-09 | 同济大学 | Dustproof self-absorption pull rod type displacement sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101467019A (en) * | 2006-01-19 | 2009-06-24 | 特拉华资本组成公司 | Line leak detector |
| CN201322600Y (en) * | 2008-12-23 | 2009-10-07 | 深圳市米朗科技有限公司 | Combined magnetostriction displacement sensor |
| CN101922908A (en) * | 2009-02-13 | 2010-12-22 | Asm自动化传感器测量技术有限公司 | Has the flat package that groove is installed |
-
2011
- 2011-07-04 CN CN2011101854195A patent/CN102252594A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101467019A (en) * | 2006-01-19 | 2009-06-24 | 特拉华资本组成公司 | Line leak detector |
| CN201322600Y (en) * | 2008-12-23 | 2009-10-07 | 深圳市米朗科技有限公司 | Combined magnetostriction displacement sensor |
| CN101922908A (en) * | 2009-02-13 | 2010-12-22 | Asm自动化传感器测量技术有限公司 | Has the flat package that groove is installed |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162608A (en) * | 2011-12-09 | 2013-06-19 | 上海球栅测量系统有限公司 | Displacement measuring device |
| CN108020149A (en) * | 2017-03-13 | 2018-05-11 | 湖南科技大学 | The accurate gage in inner space |
| CN106979754A (en) * | 2017-05-17 | 2017-07-25 | 浙江工业大学 | A kind of waterproof rock displacement measurement apparatus |
| CN108868738A (en) * | 2018-07-20 | 2018-11-23 | 杭州电子科技大学 | A kind of subglacial base rock boring TT&C system |
| CN112344839A (en) * | 2020-10-13 | 2021-02-09 | 同济大学 | Dustproof self-absorption pull rod type displacement sensor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |