CN104457659A - Magnetic transmission displacement sensor - Google Patents
Magnetic transmission displacement sensor Download PDFInfo
- Publication number
- CN104457659A CN104457659A CN201410775063.4A CN201410775063A CN104457659A CN 104457659 A CN104457659 A CN 104457659A CN 201410775063 A CN201410775063 A CN 201410775063A CN 104457659 A CN104457659 A CN 104457659A
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- CN
- China
- Prior art keywords
- rotating shaft
- magnet
- wheel
- displacement transducer
- slide block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a magnetic transmission displacement sensor which comprises a support, a magnetic wheel, a rotating shaft, slide blocks and angular displacement sensors. U-shaped slide grooves are formed in the two ends of the support respectively. The slide blocks are arranged in the slide grooves. The angular displacement sensors are fixed to the slide blocks. The rotating shaft and the magnetic wheel are connected into a whole and penetrate through the two slide blocks to be connected with the shaft input ends of the angular displacement sensors. In the use process, the magnetic wheel is attached to the surface of a measured moving body and rolls on the moving body. Through the magnetic force of a magnet, the magnetic wheel is tightly attached to a piston rod, the magnetic wheel can be reliably driven to rotate without sliding when the piston rod moves, and therefore the aim of measuring displacement is achieved after the angular displacement sensors connected with the magnetic wheel send out signals.
Description
Technical field
The present invention relates to a kind of magnetic drives displacement transducer.
Background technology
The displacement measurement of the moving component such as hydraulic cylinder or pneumatic linear actuator is the key it being implemented to control, current measuring method main exceptionally displacement sensor and inbuilt displacement sensor two class.Outer displacement sensor is generally be connected with linear displacement transducer by a pull bar, during piston rod movement, drives linear displacement transducer to send displacement signal; The use bracing wire joint angle displacement transducer also had, when component movement, bracing wire affects the angular displacement sensor be attached thereto to rotate and sends displacement signal.Inbuilt displacement sensor is generally make hollow by moving component (mostly being piston rod), in hollow interior installation position displacement sensor (being generally magnetostrictive displacement sensor), drives displacement transducer to send displacement signal when component movement.No matter be external or built-in displacement transducer, all have very strict requirement to the installation of sensor, and take the space of moving component, sometimes also will change the structure of unit under test, bring very large inconvenience to the use of sensor.
Summary of the invention
In order to solve the problem, the invention provides a kind of magnetic drives displacement transducer, transfer the rectilinear motion of moving component to rotation by a magnet-wheel, thus drive angular displacement sensor to send displacement signal, record the displacement of moving component motion.
The present invention realizes particular by following technical scheme:
A kind of magnetic drives displacement transducer, comprise support, magnet-wheel, rotating shaft, slide block and angular displacement sensor, described support two ends have " U " font chute, described chute inside is provided with slide block, fixed angles displacement transducer on described slide block, the inside that the two ends of described rotating shaft are each passed through two slide blocks is installed and the axle input end of rotating shaft joint angle displacement transducer; Described magnet-wheel is arranged in rotating shaft and both mechanical connections are integrated, and described magnet-wheel contacts with tested moving component by magnetic force and rolls thereon.
Further, the above and below of described slide block is plane and two sidewalls of described chute of fitting respectively, and the lowermost end of described chute is provided with spring assembly.
Further, described rotating shaft is non-magnet material.
Further, described angular displacement sensor is rotary encoder or potentiometer.
The beneficial effect that the present invention produces is: this sensor construction is simple, does not need reciprocity moving component to be measured carries out extra processing, easy for installation; Due to the effect of magnetic force, can not produce slip because of the oil stain of piston thick stick, reliability is high, is specially adapted to the displacement measurement that hydraulic cylinder or pneumatic linear actuator etc. have smooth piston rod.The present invention propose magnetic drives displacement sensor structure and install do not change because of the difference of the length of moving component, therefore can measure all size length moving component and without the need to increasing extra cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention;
Fig. 2 is A-A cross section structure schematic diagram in Fig. 1;
Fig. 3 is the scheme of installation of a kind of embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Fig. 1 ~ 3, a kind of magnetic drives displacement transducer, a kind of magnetic drives displacement transducer, comprise support 3, magnet-wheel 6, rotating shaft 5, slide block 4 and angular displacement sensor 7, described support 3 two ends have " U " font chute, described chute inside is provided with slide block 4, fixed angles displacement transducer 7 on described slide block 4, and the inside that the two ends of described rotating shaft 5 are each passed through two slide blocks 4 is installed and the axle input end of rotating shaft joint angle displacement transducer 7; Described magnet-wheel 6 is arranged in rotating shaft 5 and both mechanical connections are integrated, and described magnet-wheel 6 contacts with tested moving component by magnetic force and rolls thereon.In the application, slide block 4 is in chute, and chute be transverse opening towards moving component to be measured, facilitate fixed rotating shaft 5, ensure magnet-wheel 6 do not produce displacement when contacting with tested moving component and rolling.And the above and below of preferably slide block 4 is plane and two sidewalls of described chute of fitting respectively, described chute is in " U " font and lowermost end is provided with spring assembly 8, this design effectively can ensure that slide block is in chute inside and is in by the state clamped up and down, slide block can not produce upper and lower to displacement, slide block 4 can also realize the displacement of left and right horizontal direction simultaneously, to adjust the right position of slide block, as long as other structures certainly can also be arranged to reach this function, do not limit here.
Fixed angles displacement transducer 7 on one of them slide block 4 of the application, the two ends of rotating shaft 5 are each passed through the inside of two slide blocks 4 and the axle input end of rotating shaft 5 joint angle displacement transducer 7.Magnet-wheel 6 is installed in described rotating shaft 5, and mechanical connection is integrated, as long as both can rotate drive axis of rotation in conjunction with realizing magnet-wheel, and this technology is easy to realize not being described here.The runner that magnet-wheel 6 adopts magnetic material to make, the external diameter size of described rotating shaft 5 equal magnet-wheel 6 internal diameter size and just in time with the use of.Simultaneously can give slide block 4 one acting forces to chute opening at the spring assembly 8 of the lowermost end of chute, namely can allow magnet-wheel 6 towards moving component degree of being adjacent to be measured more by force, spring assembly 8 can be understood very well and also realizes very well here, is not therefore elaborated.And in the process to move left and right at slide block 4, can it be made to be in moving component to be measured by adjustment slide block magnet-wheel 6 and contact best position.
In order to avoid angular displacement sensor and rotating shaft magnetic influence, rotating shaft adopts non-magnet material, only have magnet-wheel 6 and moving component to be measured to be fitted tightly by magnetic force like this, and rotating shaft 5 can not be had influence on, also can not affect the normal work of angular displacement sensor because of rotating shaft magnetic conduction.
Preferably this angular displacement sensor can select rotary encoder or potentiometer.
Conveniently understand principle of work of the present invention, embodiment takes the mode of testing piston rod to be illustrated, and moving component to be measured here includes but not limited to the test of piston rod.Sensor of the present invention is in actual motion, support 3 is arranged on cylinder body 1, by adjusting the position on the left and right directions of slide block 4, magnet-wheel 6 is fitted tightly on the piston rod 2 on cylinder body, because magneticaction magnet-wheel 6 and piston rod 2 fit tightly, due to magnet-wheel 6 and rotating shaft 5 for mechanical erection and be connected as a single entity, magnet-wheel 6 is driven to rotate in the process of movement on the piston rod, because when ensureing work under the elastic force effect of spring assembly 8, slide block is not easy to produce displacement easily, magnet-wheel 6 is also more reliable with the laminating degree of rotating shaft 5.In magnet-wheel 6 rotary course, drive rotating shaft 5 to rotate, and then drive angular displacement sensor 7 to produce signal, finally draw the displacement of piston rod.This device, due to the magneticaction of magnet-wheel and piston rod, ensures that magnet-wheel is tightly fitted with it in the motion process of piston rod, thus reduces the requirement to installation accuracy, more realistic user demand.
The present invention with straight-line displacement as an example, utilizes principle of the present invention, slightly changes, and also the rotation axis of magnet-wheel and slewing is fitted and just be can be used for the measurement of measured angular displacement.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a magnetic drives displacement transducer, it is characterized in that, comprise support (3), magnet-wheel (6), rotating shaft (5), slide block (4) and angular displacement sensor (7), described support (3) two ends have " U " font chute, described chute inside is provided with slide block (4), the upper fixed angles displacement transducer (7) of described slide block (4), the inside that the two ends of described rotating shaft (5) are each passed through two slide blocks (4) is installed and the axle input end of rotating shaft joint angle displacement transducer (7); Described magnet-wheel (6) is arranged on upper and both mechanical connections of rotating shaft (5) and is integrated, and described magnet-wheel (6) to contact with tested moving component by magnetic force and rolls thereon.
2. magnetic drives displacement transducer as claimed in claim 1, it is characterized in that, the above and below of described slide block (4) is plane and described chute two sidewalls of fitting respectively, and the lowermost end of described chute is provided with spring assembly (8).
3. magnetic drives displacement transducer as claimed in claim 1, it is characterized in that, described rotating shaft (5) is non-magnet material.
4. magnetic drives displacement transducer as claimed in claim 1, it is characterized in that, described angular displacement sensor (7) is rotary encoder or potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775063.4A CN104457659A (en) | 2014-12-16 | 2014-12-16 | Magnetic transmission displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775063.4A CN104457659A (en) | 2014-12-16 | 2014-12-16 | Magnetic transmission displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104457659A true CN104457659A (en) | 2015-03-25 |
Family
ID=52904096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410775063.4A Pending CN104457659A (en) | 2014-12-16 | 2014-12-16 | Magnetic transmission displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104457659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301812A (en) * | 2018-04-08 | 2018-07-20 | 山东威马泵业股份有限公司 | The liquid drive beam pumping unit of liquid drive beam pumping unit and more well joint controls |
| CN114894079A (en) * | 2022-05-09 | 2022-08-12 | 石家庄开发区天远科技有限公司 | Hydraulic cylinder piston rod detection system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097062A (en) * | 1992-11-06 | 1995-01-04 | 弗罗劳杰克系统有限公司 | The method and apparatus that is used for dosing small amounts of liquid quantitatively |
| JP2002102343A (en) * | 2000-10-03 | 2002-04-09 | Nemoto Kyorindo:Kk | Automatic injector |
| CN201662376U (en) * | 2009-12-28 | 2010-12-01 | 武汉思威科技投资有限公司 | Linear and rotating dual-purpose switch testing sensor |
| CN102619899A (en) * | 2012-04-13 | 2012-08-01 | 潍柴动力股份有限公司 | Automatic clutch actuating mechanism and control method thereof |
| CN202994483U (en) * | 2012-07-12 | 2013-06-12 | 湖南师范大学 | Test device of automobile magneto-rheological suspension system |
| CN203375971U (en) * | 2013-06-19 | 2014-01-01 | 中国地质科学院勘探技术研究所 | Magnetic-type rotating disk displacement sensor |
-
2014
- 2014-12-16 CN CN201410775063.4A patent/CN104457659A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097062A (en) * | 1992-11-06 | 1995-01-04 | 弗罗劳杰克系统有限公司 | The method and apparatus that is used for dosing small amounts of liquid quantitatively |
| JP2002102343A (en) * | 2000-10-03 | 2002-04-09 | Nemoto Kyorindo:Kk | Automatic injector |
| CN201662376U (en) * | 2009-12-28 | 2010-12-01 | 武汉思威科技投资有限公司 | Linear and rotating dual-purpose switch testing sensor |
| CN102619899A (en) * | 2012-04-13 | 2012-08-01 | 潍柴动力股份有限公司 | Automatic clutch actuating mechanism and control method thereof |
| CN202994483U (en) * | 2012-07-12 | 2013-06-12 | 湖南师范大学 | Test device of automobile magneto-rheological suspension system |
| CN203375971U (en) * | 2013-06-19 | 2014-01-01 | 中国地质科学院勘探技术研究所 | Magnetic-type rotating disk displacement sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301812A (en) * | 2018-04-08 | 2018-07-20 | 山东威马泵业股份有限公司 | The liquid drive beam pumping unit of liquid drive beam pumping unit and more well joint controls |
| CN108301812B (en) * | 2018-04-08 | 2024-08-02 | 山东威马泵业股份有限公司 | Hydraulic drive beam pumping unit and multi-well combined control hydraulic drive beam pumping unit |
| CN114894079A (en) * | 2022-05-09 | 2022-08-12 | 石家庄开发区天远科技有限公司 | Hydraulic cylinder piston rod detection system and method |
| CN114894079B (en) * | 2022-05-09 | 2024-06-14 | 石家庄开发区天远科技有限公司 | Hydraulic cylinder piston rod detection system and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |