CN104155468A - Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment - Google Patents
Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment Download PDFInfo
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- CN104155468A CN104155468A CN201410401898.3A CN201410401898A CN104155468A CN 104155468 A CN104155468 A CN 104155468A CN 201410401898 A CN201410401898 A CN 201410401898A CN 104155468 A CN104155468 A CN 104155468A
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- magnet steel
- rotating shaft
- mechanical equipment
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- flat boards
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Abstract
The invention provides a magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment. The magnet induction lantern ring is characterized by comprising a circular base and a plurality of neodymium iron boron magnet units, wherein the plurality of neodymium iron boron magnet units are uniformly embedded into the base along the circumference. According to the magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment, the structure in which the neodymium iron boron magnet units are embedded into the circular base is used as the induction object of a magneto-electric speed sensor, and the base has a round and smooth outer wall different from the sharp edge of a fluted disc wheel and does not generate severe vibration or pose a threat to surrounding equipment when rotating with a rotating shaft at high speed, so that the data acquisition sensitivity and accuracy of the magneto-electric speed sensor are greatly improved. In addition, the magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment has a simple and ingenious structure and small size, is easy to process, and is applicable to early and later mechanical equipment assembly.
Description
Technical field
The present invention relates to rotating shaft velocity measuring technique field, relate in particular to a kind of induction of the magnet steel for measurement mechanical equipment rotating shaft speed collar.
Background technology
In order to measure the slewing rate of rotating shaft, generally can on the measured axis of plant equipment running, magnetoelectric tachometric transducer be installed, magnetoelectric tachometric transducer is mainly comprised of permanent-magnet steel, iron core, inductive coil etc., it is to cause flux change according to magnetic resistance change rate in magnetic circuit, thereby in coil, produces the principle work of induced potential.Fluted disc wheel (halved irony fluted disc wheel has been installed on measured axis, there is multiple tooth or hypodontia above), the inductive coil of magnetoelectric tachometric transducer keeps spacing relative static with fluted disc wheel, when measured axis driven gear rotates, gap generating period between iron core and the tooth of gear changes, make magnetic resistance in magnetic circuit also produce respective change, thereby cause that the magnetic flux by coil changes, in inductive coil, just produce alternation induced potential.Specifically, when the tooth root of fluted disc wheel is during over against inductive coil, the magnetic line of force of generation comparatively disperses, magnetic field relatively a little less than, when the tooth top of fluted disc wheel is during over against inductive coil, the magnetic line of force of generation is comparatively concentrated, magnetic field is just relatively strong.Magnetoelectric tachometric transducer is exactly the variation by density of line of magnetic force, when passing the sensing element on sensor, the magnetic line of force produces Hall voltage, and can convert thereof into as alternate electrical signal, the built-in circuit of last magnetoelectric tachometric transducer can be by signal adjustment and amplification, output matrix pulse signal, by calculating rotating speed.
Be not difficult thus to find, while using magnetoelectric tachometric transducer to measure, must utilize the variation in magnetic field, therefore when measuring the equipment of non-ferromagnetic material, need to install in advance special magnet material, in order to change sensor magnetic field around, magnetoelectric tachometric transducer could capture the motion state of rotating shaft exactly like this.Although fluted disc wheel can be used as the induction object of magnetoelectric tachometric transducer, but fluted disc wheel is only applicable to the equipment of middle and slow speed of revolution, because when rotating speed afterwards to be measured is very high, the fluted disc wheel of rotation cans be compared to an electric saw, exist serious potential safety hazard, and the fluted disc of high-speed rotation wheel can produce strong vibration and gross distortion, cause the data that sensor collects to have very large error, affected the accuracy of final data.In addition, fluted disc size of wheel is larger, installs and is also subject to space and rotating shaft position restriction.
Summary of the invention
The technical problem to be solved in the present invention is: in order to use fluted disc wheel to have major defect as the induction object of magnetoelectric tachometric transducer in security and measuring error in prior art, the invention provides a kind of magnet steel for the measurement mechanical equipment rotating shaft speed induction collar, adopt and there is the annular matrix of mellow and full outer rim and solve the problems referred to above as the unitized construction of the Nd-Fe-B magnet steel unit of the induction object of magnetoelectric tachometric transducer.
The technical solution adopted for the present invention to solve the technical problems is: a kind of induction of the magnet steel for measurement mechanical equipment rotating shaft speed collar, matrix and several Nd-Fe-B magnet steel unit of comprising annular, described several Nd-Fe-B magnet steel unit are along being circumferentially evenly embedded in described matrix.
Concrete, described Nd-Fe-B magnet steel unit is cylindrical, described matrix is along circumferentially evenly offering several through holes that quantity is identical with described Nd-Fe-B magnet steel unit, described several Nd-Fe-B magnet steel unit are embedded respectively in described several through holes, and described in each, the axis of Nd-Fe-B magnet steel unit is all vertical also passes the center of described matrix with the axis of described matrix.
As preferably, described through hole is divided into the first cylindrical hole and the second cylindrical hole successively from inwall to the outer wall of described matrix, the diameter of described the first cylindrical hole is than the large 0.2 ~ 0.5mm of diameter of described Nd-Fe-B magnet steel unit, axial length is more than or equal to the axial length of described Nd-Fe-B magnet steel unit, and the diameter of described the second cylindrical hole is less than the diameter of described Nd-Fe-B magnet steel unit.
As preferably, between described the first cylindrical hole and described Nd-Fe-B magnet steel unit, be also coated with silica gel.
As preferably, described matrix is radially divided into first and the second portion connecting, and described first and second portion are detachable fixing.
Concrete, described first and second portion are shape, the semicircle annular that size is consistent, there is the first flat board being parallel to radially one end of described first along circumferential projection, there are two the second flat boards that are parallel to radially one end along circumferential projection in addition, described two second flat boards and described first form the first groove, corresponding described first dull and stereotyped and the first groove, the two ends of described second portion have respectively two the 3rd dull and stereotyped He Siping City plates, described two the 3rd flat boards and described second portion form the second groove, the spacing of described two the second flat boards is slightly larger than the thickness of described Siping City plate, the spacing of described two the 3rd flat boards is slightly larger than the thickness of described the first flat board, on described the first flat board and two the 3rd flat boards, offer respectively accordingly first axially extending bore, described the first flat board stretches into the second groove fastening by screw bolt and nut and described two the 3rd flat boards, on described Siping City plate and two the second flat boards, offer respectively accordingly second axially extending bore, described Siping City plate stretches into the first groove fastening by screw bolt and nut and described two second flat boards.
Concrete, the material of described matrix is aluminium.
The invention has the beneficial effects as follows, this induction of the magnet steel for the measurement mechanical equipment rotating shaft speed collar is used as the induction object of magnetoelectric tachometric transducer with the structure of the embedded Nd-Fe-B magnet steel of the matrix at annular unit, matrix has and is different from the mellow and full level and smooth outer wall that fluted disc is taken turns sharp outer rim, when with rotating shaft High Rotation Speed, neither can produce serious vibration, can surrounding devices not produced and be threatened yet, sensitivity and the accuracy of magnetoelectric tachometric transducer image data are improved greatly, in addition, this induction of the magnet steel for measurement mechanical equipment rotating shaft speed thimble structure is simply ingenious, volume is small and exquisite, easily processing, being applicable to various front and back phase plant equipment assemblings uses.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is that the present invention is for the structural representation of the optimum embodiment of the magnet steel induction collar of measurement mechanical equipment rotating shaft speed.
Fig. 2 is that the present invention is for the longitudinal section view of the magnet steel induction collar of measurement mechanical equipment rotating shaft speed.
Fig. 3 is that the present invention is for the assembling schematic diagram of the magnet steel induction collar of measurement mechanical equipment rotating shaft speed.
In figure 1, matrix, 2, Nd-Fe-B magnet steel unit, 3, bolt, 4, magnetoelectric tachometric transducer, 5, rotating shaft, the 6, first cylindrical hole, the 7, second cylindrical hole.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1 and 2, the invention provides a kind of induction of the magnet steel for measurement mechanical equipment rotating shaft speed collar, aluminum matrix 1 and several Nd-Fe-B magnet steel unit 2 of comprising annular, Nd-Fe-B magnet steel unit 2 is cylindrical, matrix 1 is along circumferentially evenly offering several through holes that quantity is identical with Nd-Fe-B magnet steel unit 2, several Nd-Fe-B magnet steel unit 2 are embedded respectively in several through holes, the axis of each Nd-Fe-B magnet steel unit 2 all axis vertical and matrix 1 also passes the center of matrix 1, Nd-Fe-B magnet steel magnetic force magnetic force is of a specified duration by force, magnetic stability, volume is little, be suitable as very much the induction object of magnetoelectric tachometric transducer 4, the quantity of Nd-Fe-B magnet steel unit 2 is not restriction in design, but in actual conditions, when rotating shaft 5 runs up may there is trickle vibration in the magnet steel induction collar, cause the measurement data of Nd-Fe-B magnet steel unit 2 to be lost, can exert an influence to the accuracy of measurement result, in order to guarantee measuring accuracy and stability, those skilled in the art can be according to the physical size of rotating shaft 5, determine the quantity of Nd-Fe-B magnet steel unit 2.
Through hole is divided into the first cylindrical hole 6 and the second cylindrical hole 7 successively from inwall to the outer wall of matrix 1, the diameter of the first cylindrical hole 6 is than the large 0.3mm of the diameter of Nd-Fe-B magnet steel unit 2, Nd-Fe-B magnet steel unit 2 can be embedded in the first cylindrical hole 6 smoothly, axial length is more than or equal to the axial length of Nd-Fe-B magnet steel unit 2, the diameter of the second cylindrical hole 7 is less than the diameter of Nd-Fe-B magnet steel unit 2, matrix 1 is when with rotating shaft 5 rotation, centrifugal force can make Nd-Fe-B magnet steel unit 2 have radial outward movement tendency, the second cylindrical hole 7 can prevent that Nd-Fe-B magnet steel unit 2 is thrown out of, also can not affect the inductive effects of the magnetic head of magnetoelectric tachometric transducer 4 to it.
Owing to thering is trickle gap between the first cylindrical hole 6 and Nd-Fe-B magnet steel unit 2, therefore, when loading, first at a little silica gel of the interior coating of the first cylindrical hole 6, then Nd-Fe-B magnet steel unit 2 is embedded, prevent its disengaging.
In order to facilitate the installation of the magnet steel induction collar, matrix 1 is radially divided into first and the second portion connecting, first and second portion are detachable fixing, first and second portion are shape, the semicircle annular that size is consistent, there is the first flat board being parallel to radially one end of first along circumferential projection, there are two the second flat boards that are parallel to radially one end along circumferential projection in addition, two the second flat boards and first form the first groove, corresponding first dull and stereotyped and the first groove, the two ends of second portion have respectively two the 3rd dull and stereotyped He Siping City plates, two the 3rd flat boards and second portion form the second groove, the spacing of two the second flat boards is slightly larger than the thickness of Siping City's plate, the spacing of two the 3rd flat boards is slightly larger than the thickness of the first flat board, on the first flat board and two the 3rd flat boards, offer respectively accordingly first axially extending bore, the first flat board stretches into the second groove fastening with two the 3rd flat boards by bolt 3 and nut, on Siping City's plate and two the second flat boards, offer respectively accordingly second axially extending bore, Siping City's plate stretches into the first groove fastening with two second flat boards by bolt 3 and nut.
As shown in Figure 3, when assembling, first one end of the first of matrix 1 and second portion is connected and is not first tightened the bolt 3 of this one end with bolt 3, make transmission relatively between first and second portion, facilitate first and second portion outwards to open to be sleeved in rotating shaft 5, and then with bolt 3, first and the other one end of second portion are connected and fixed, finally again the bolt at two ends 3 is tightened; The internal diameter of matrix 1 is identical with the outside dimension of rotating shaft 5, makes it precision and is assemblied in rotating shaft 5, and to guarantee rotating shaft 5, when running up, the magnet steel induction collar can loose or dislocation.Magnetoelectric tachometric transducer 4 can select mounting points to install according to actual environment, make its magnetic head and Nd-Fe-B magnet steel unit 2 keep right alignment, and magnetic head and matrix 1 outer wall must not surpass 6mm, spacing is crossed conference and is caused magnetic head induction less than Nd-Fe-B magnet steel unit 2, affect the accuracy of measurement data, but spacing can not be too small, otherwise in the process running up in rotating shaft 5, matrix 1 may be encountered the magnetic head of Hall revolution speed transducer, causes unnecessary loss.
When rotating shaft 5 is rotated, the magnet steel induction collar can be through the front end of magnetic head, cause the respective change in magnetic field, when Nd-Fe-B magnet steel unit 2 is during over against magnetic head, the magnetic line of force producing through magnetic head is comparatively concentrated, and magnetic field is relatively strong, when 2 pairs of Nd-Fe-B magnet steel unit magnetic head departs from magnetic head, the magnetic line of force producing through magnetic head comparatively disperses, magnetic field just relatively a little less than.Magnetoelectric tachometric transducer 4 is by the variation of density of line of magnetic force, produce Hall voltage, and convert thereof into as alternate electrical signal, the built-in circuit of last magnetoelectric tachometric transducer 4 can be by signal adjustment and amplification, output matrix pulse signal, by calculating rotating speed.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to claim scope.
Claims (7)
1. for a magnet steel induction collar for measurement mechanical equipment rotating shaft speed, it is characterized in that: comprise matrix and several Nd-Fe-B magnet steel unit of annular, described several Nd-Fe-B magnet steel unit are along being circumferentially evenly embedded in described matrix.
2. the magnet steel for measurement mechanical equipment rotating shaft speed as claimed in claim 1 is responded to the collar, it is characterized in that: described Nd-Fe-B magnet steel unit is cylindrical, described matrix is along circumferentially evenly offering several through holes that quantity is identical with described Nd-Fe-B magnet steel unit, described several Nd-Fe-B magnet steel unit are embedded respectively in described several through holes, and described in each, the axis of Nd-Fe-B magnet steel unit is all vertical also passes the center of described matrix with the axis of described matrix.
3. the magnet steel for measurement mechanical equipment rotating shaft speed as claimed in claim 2 is responded to the collar, it is characterized in that: described through hole is divided into the first cylindrical hole and the second cylindrical hole successively from inwall to the outer wall of described matrix, the diameter of described the first cylindrical hole is than the large 0.2 ~ 0.5mm of diameter of described Nd-Fe-B magnet steel unit, axial length is more than or equal to the axial length of described Nd-Fe-B magnet steel unit, and the diameter of described the second cylindrical hole is less than the diameter of described Nd-Fe-B magnet steel unit.
4. the induction of the magnet steel for the measurement mechanical equipment rotating shaft speed collar as claimed in claim 3, is characterized in that: between described the first cylindrical hole and described Nd-Fe-B magnet steel unit, be also coated with silica gel.
5. the induction of the magnet steel for the measurement mechanical equipment rotating shaft speed collar as claimed in claim 1, is characterized in that: described matrix is radially divided into first and the second portion connecting, and described first and second portion are detachable fixing.
6. the magnet steel for measurement mechanical equipment rotating shaft speed as claimed in claim 5 is responded to the collar, it is characterized in that: described first and second portion are shape, the semicircle annular that size is consistent, there is the first flat board being parallel to radially one end of described first along circumferential projection, there are two the second flat boards that are parallel to radially one end along circumferential projection in addition, described two second flat boards and described first form the first groove, corresponding described first dull and stereotyped and the first groove, the two ends of described second portion have respectively two the 3rd dull and stereotyped He Siping City plates, described two the 3rd flat boards and described second portion form the second groove, the spacing of described two the second flat boards is slightly larger than the thickness of described Siping City plate, the spacing of described two the 3rd flat boards is slightly larger than the thickness of described the first flat board, on described the first flat board and two the 3rd flat boards, offer respectively accordingly first axially extending bore, described the first flat board stretches into the second groove fastening by screw bolt and nut and described two the 3rd flat boards, on described Siping City plate and two the second flat boards, offer respectively accordingly second axially extending bore, described Siping City plate stretches into the first groove fastening by screw bolt and nut and described two second flat boards.
7. the induction of the magnet steel for the measurement mechanical equipment rotating shaft speed collar as claimed in claim 1, is characterized in that: the material of described matrix is aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401898.3A CN104155468B (en) | 2014-08-14 | 2014-08-14 | For measuring the magnet steel sensing collar of machinery equipment rotating shaft speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401898.3A CN104155468B (en) | 2014-08-14 | 2014-08-14 | For measuring the magnet steel sensing collar of machinery equipment rotating shaft speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104155468A true CN104155468A (en) | 2014-11-19 |
| CN104155468B CN104155468B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410401898.3A Active CN104155468B (en) | 2014-08-14 | 2014-08-14 | For measuring the magnet steel sensing collar of machinery equipment rotating shaft speed |
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| Country | Link |
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| CN (1) | CN104155468B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357833A (en) * | 2018-11-12 | 2019-02-19 | 广西科技大学 | A kind of installation device of sensor of suspended span pipeline vortex-induced vibration test |
| CN110261639A (en) * | 2019-06-05 | 2019-09-20 | 广州文冲船厂有限责任公司 | It is a kind of for measuring the device and its working method of axis revolving speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003097582A (en) * | 2001-09-27 | 2003-04-03 | Nsk Ltd | Bearing device with sensor |
| CN2864680Y (en) * | 2005-12-02 | 2007-01-31 | 包头稀土研究院 | Iron-matrix block amorphous rotation speed sensor |
| CN202676729U (en) * | 2012-03-17 | 2013-01-16 | 佛山市顺德区海伦宝电器有限公司 | Magnetic induction rotation speed measuring device |
| US20130149175A1 (en) * | 2011-12-08 | 2013-06-13 | Chun-Chao WANG | Involute Jet Pump |
| CN203572836U (en) * | 2013-08-27 | 2014-04-30 | 朱寿康 | Magnetoelectric revolution meter |
-
2014
- 2014-08-14 CN CN201410401898.3A patent/CN104155468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097582A (en) * | 2001-09-27 | 2003-04-03 | Nsk Ltd | Bearing device with sensor |
| CN2864680Y (en) * | 2005-12-02 | 2007-01-31 | 包头稀土研究院 | Iron-matrix block amorphous rotation speed sensor |
| US20130149175A1 (en) * | 2011-12-08 | 2013-06-13 | Chun-Chao WANG | Involute Jet Pump |
| CN202676729U (en) * | 2012-03-17 | 2013-01-16 | 佛山市顺德区海伦宝电器有限公司 | Magnetic induction rotation speed measuring device |
| CN203572836U (en) * | 2013-08-27 | 2014-04-30 | 朱寿康 | Magnetoelectric revolution meter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357833A (en) * | 2018-11-12 | 2019-02-19 | 广西科技大学 | A kind of installation device of sensor of suspended span pipeline vortex-induced vibration test |
| CN109357833B (en) * | 2018-11-12 | 2024-02-23 | 广西科技大学 | Sensor mounting device for vortex-induced vibration test of suspended span pipeline |
| CN110261639A (en) * | 2019-06-05 | 2019-09-20 | 广州文冲船厂有限责任公司 | It is a kind of for measuring the device and its working method of axis revolving speed |
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| Publication number | Publication date |
|---|---|
| CN104155468B (en) | 2016-08-24 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment Effective date of registration: 20200312 Granted publication date: 20160824 Pledgee: NEW UNITED RAIL TRANSIT TECHNOLOGY Co.,Ltd. Pledgor: XIN YU GROUP Co.,Ltd. Registration number: Y2020980000649 |
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Date of cancellation: 20211119 Granted publication date: 20160824 Pledgee: NEW UNITED RAIL TRANSIT TECHNOLOGY Co.,Ltd. Pledgor: NEW UNITED GROUP Co.,Ltd. Registration number: Y2020980000649 |
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