CN104935147B - Permanent magnetic vibration generation apparatus with trapezoidal magnetic yokes - Google Patents
Permanent magnetic vibration generation apparatus with trapezoidal magnetic yokes Download PDFInfo
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- CN104935147B CN104935147B CN201510371757.6A CN201510371757A CN104935147B CN 104935147 B CN104935147 B CN 104935147B CN 201510371757 A CN201510371757 A CN 201510371757A CN 104935147 B CN104935147 B CN 104935147B
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Abstract
The invention relates to a permanent magnetic vibration generation apparatus with trapezoidal magnetic yokes. The permanent magnetic vibration generation apparatus is characterized in that a main body structure of the generation apparatus is a cylindrical structure and comprises a cylindrical housing, a top cover, a vibration shaft and a bottom cover; upper and lower ends of the housing are fixedly connected with the top cover and the bottom cover through bolts respectively; a cylindrical through hole is formed in the center of the top cover; a coil outlet through hole is formed in one side of the center of the top cover; a hollow cylindrical hub is mounted in the center of the upper part of the bottom cover; a spring is arranged in a bottom hollow part of the hub; the lower part of the vibration shaft is in contact with the spring in the hub; the upper end of the vibration shaft vertically penetrates through a linear bearing and the top cover fixed with the vibration shaft, and is higher than the top cover; a regular quadrangular prism body is arranged in the middle of the vibration shaft; both upper and lower parts of the vibration shaft adopt cylindrical structures; quadrangular prism grooves are formed in four side surfaces of the regular quadrangular prism body in the middle; a trapezoidal magnetic yoke is bonded in each quadrangular prism body; and the four trapezoidal magnetic yokes are identical in shape and structure.
Description
Technical field
The present invention relates to the vibrational energy in environment is converted to the vibration generating device of electric energy, more particularly to a kind of trapezoid magnet
Yoke permanent magnetic vibration TRT, core are vibrating shaft, trapezoidal yoke, hollow cylindrical shell.The permanent magnetic vibration generates electricity and fills
Put and closed magnetic circuit can be formed between trapezoidal yoke and permanent magnet, improve the utilization rate in magnetic field.
Background technology
Permanent magnetic vibration TRT is that ambient vibration energy is converted to sending out for electric energy using Faraday law of electromagnetic induction
Electric installation, which has the advantages that generated output is big, easy to maintain.
According to the difference of vibrating mass, permanent magnetic vibration TRT can be divided into dynamic ferrum (magnet movement), moving-coil (coil
Motion) and same dynamic (magnet coil associated movement) three types of iron ring.Moving iron as coil is motionless, and Magnet opposed coil shakes
Dynamic, in coil, magnetic flux changes, so as to produce induction electromotive force in coil.Moving-coil type as Magnet is motionless, coil phase
Magnet is vibrated, in coil, magnetic flux changes, so as to produce induction electromotive force in coil；In order to further improve low frequency
Electric energy output under vibration, occurs in that vibration energy collector of the iron ring with the vibration shape.Iron ring is with the vibration shape and shakes in extraneous input
Under dynamic, Magnet and coil all produce vibration, but have relative motion between the two, produce induction electromotive force in coil.
Existing permanent magnetic vibration TRT is mostly small energy harvester, and great majority do not utilize yoke to be led
Magnetic, causes the waste on a large scale in magnetic field；Preferably can not improve by coil according to Faraday law of electromagnetic induction
The rate of change of magnetic flux, so that improve output induction electromotive force." a kind of low frequency permanent magnetic vibration generating applied before this seminar
Device " be applied to low frequency big displacement under the conditions of energy acquisition, its agent structure be four-prism, including four side plates, on
End cap and bottom end cover, it is using pole shoe type yoke as magnetic conduction path, convenient to place coil and produce the magnetic field of linear change；It is not enough
Part is larger for volume, the vibration being unsuitable for more than frequency 10Hz.The present invention is column type vibration generating device, it is adaptable to vehicle
Vibrational energy collection under driving conditions, small volume, a diameter of 8.2cm, a height of 12cm, and used ladder type yoke conduct
Magnetism guiding access, in two adjacent ladder type magnetic poles can just form closed-loop path, improve magnetic field utilization rate, effectively alleviate
Mover weight, even if when the excitation of extraneous input power is less, it is also possible to produce vibration, so as to vibrational energy is converted to electric energy, carry
High electromechanical conversion efficiency.
The content of the invention
The present invention devises a kind of trapezoidal yoke permanent magnetic vibration TRT for the vibration under vehicle traveling.The vibration
TRT core component is vibrating shaft, trapezoidal yoke, hollow cylindrical shell, and the yoke design by vibration generating device
It is the magnetic yoke structure with four trapezoidal magnetic poles, the volume of yoke on the basis of high magnetic conduction is ensured, can be reduced as much as possible, and
And four magnetic poles and pole body vertical distribution so that when magnetic flux is through pole body there are 90 ° of changes in direction, so that being wound on pole body
On coil in variation rate of magnetic flux it is larger, produce bigger induction electromotive force；Additionally, main body of the TRT using cylinder type
Enclosed construction, improves stability when vibration generating device works, and can improve the utilization ratio in magnetic field and space；Most
Afterwards, due to the full symmetric structure of TRT so that the electromagnetism that vibrating shaft is subject to is 0 with joint efforts, act on when can reduce vibration
In the active force of vibrating shaft.The present invention is applied to the vibration under vehicle travel conditions, i.e. frequency 1-20Hz, vibration displacement peak value 1-
Vibrating power-generation under the conditions of 20mm.Theory shows that with experiment vibration generating device of the present invention is 10Hz, amplitude 10mm in frequency
When, each yoke coil output voltage peak value is 6.8V.
The present invention solve technical scheme that the technical problem adopts for：
A kind of trapezoidal yoke permanent magnetic vibration TRT, it is characterised in that the agent structure of the TRT is cylindric knot
Structure, including cylinder type shell, top cover, vibrating shaft and bottom, shell upper and lower ends are fixed with top cover, bottom by bolt respectively and are connected
Connect, top cap central is provided with cylindrical hole, the side at the center of top cover is provided with coil and goes out line three-way hole, and bottom central upper portion is provided with
Hollow cylindrical hub, hub inner bottom part hollow parts place spring；The bottom of vibrating shaft is contacted with spring in hub；Vibrating shaft it is upper
End passes perpendicularly through top cover of the linear bearing together with being secured to, and is higher by top cover；
The middle part of the vibrating shaft is four-prism, and the upper and lower two parts of vibrating shaft are cylindrical-shaped structure, and middle part is just
Four prisms cylinder is machined with quadrangular groove four sides, and in each quadrangular groove, equal bonding is placed with a trapezoidal yoke,
The identical trapezoidal yoke of totally four shape and structures, each trapezoidal yoke include four trapezoidal magnetic poles, two pole bodies and one
Electrode seat, two pole bodies are completely identical in structure cuboid, and the bottom surface of electrode seat is parallel four side that adjacent both sides angle is 45 °
Shape, the bottom surface of electrode seat are fixed in the quadrangular groove of vibrating shaft, and two pole body one end are respectively relative with the two of electrode seat
Long side is vertically fixed, and is vertically and fixedly provided with two trapezoidal magnetic poles respectively inwards in the other end of each pole body, and under trapezoidal magnetic pole
Bottom is vertical with corresponding pole body to be fixedly connected, and four trapezoidal magnetic poles on two pole bodies are staggered, and four trapezoidal magnetic poles exist
On same plane, between adjacent trapezoidal magnetic pole, there is gap, the polarity of four trapezoidal magnetic poles is different successively from top to bottom；In each pole
A coil be wound with it vertically, the coil winding direction all same of two in same electrode seat pole body, and
Two ends of two coils in same electrode seat are connected, and reserve two head ends as lead-out wires of coil, two coils
Lead-out wire is one group of lead-out wires of coil, four trapezoidal yokes totally eight lead-out wires of coil, is divided into into four groups of lead-out wires of coil, and this four
Group lead-out wires of coil goes out line three-way hole extraction from the coil of top cover, and the coiling direction of eight coils is all identical；
Four vertical table tops being symmetrically distributed with the inside of cylinder type shell, each table top process six at middle part respectively
Individual permanent magnet groove, six permanent magnet grooves embed set of permanent magnets for bonding, totally four set of permanent magnets, each set of permanent magnets
Include six tetragonal body permanent magnets, the equal axial charging of six tetragonal body permanent magnets, and along the permanent magnet groove of respective mesa
It is close to successively from top to bottom be embedded in corresponding permanent magnet groove, the polar orientation of six tetragonal body permanent magnets is level side
To, and adjacent tetragonal body permanent magnet polarity is different successively；The upper and lower ends face of four-prism during equilbrium position in the middle part of vibrating shaft
It is concordant with the upper and lower end face of four permanent magnets in centre of corresponding set of permanent magnets respectively；The end face outside of each trapezoidal yoke and phase
Equidistant air gap is respectively kept between the outer face of the set of permanent magnets answered.
The distance between above-mentioned trapezoidal yoke permanent magnetic vibration TRT, the trapezoidal magnetic pole of two on each pole body are trapezoidal
Magnetic pole goes to the bottom 1.1-1.5 times of length.
Above-mentioned trapezoidal yoke permanent magnetic vibration TRT, the hollow cylindrical hub inwall are provided with square groove, vibrating shaft bottom
The square groove for being provided with square keyway, square keyway and hub inwall is connected by flat key, and vibrating shaft is fixed with hollow cylindrical hub.
Above-mentioned trapezoidal yoke permanent magnetic vibration TRT, the top cover and bottom are the reeded column type aluminum of boundary zone
The groove of alloy sheets, top cover and bottom is to embed cylinder type shell.
Above-mentioned trapezoidal yoke permanent magnetic vibration TRT, the trapezoidal yoke are overall by No. 45 steel cuttings of permeability magnetic material
Into.
Beneficial effects of the present invention are：
(1) air gap between set of permanent magnets and yoke is less, is 1mm, considerably reduces the leakage field in air, improves
The utilization rate in magnetic field；
(2) magnetic yoke structure is designed as the structure of trapezoidal magnetic pole, each yoke totally four magnetic poles, and four magnetic poles constitute two pairs
Pole, four magnetic poles are corresponding in turn to the adjacent different set of permanent magnets of polarity on the inside of cylinder type shell, this magnetic yoke structure it is excellent
Point is, for the rate of change for obtaining double magnetic flux at the coil on pole body, to reduce air-gap reluctance, improves magnetic pole and magnetic field distribution,
So as to obtain larger induction electromotive force according to Faraday law of electromagnetic induction；
(3) coil is wound with each pole body of yoke, and pole body is vertical with trapezoidal magnetic pole is connected, make to be wound on
Coil on pole body is easily fixed, and in vibrating shaft up-down vibration, the adjacent different permanent magnet of polarity is placed and causes trapezoid magnet
The flux change rate for extremely going up is larger, and flux value is larger, more conducively produces high electromotive force；
(4) body design of TRT is cylindrical-shaped structure, the set of permanent magnets inside TRT and trapezoidal yoke edge
Even circumferential is distributed；The electromagnetic force that each upwards direction in four directions is subject to is equal in magnitude, the four direction that mover is subject to make a concerted effort be
0, so as to reduce the active force for acting on mover during vibration；
(5) experimental data shows, the present invention shakes under frequency of vibration 10Hz, the sinusoidal vibration excitation of peak value 10mm conditions
Lead-out wires of coil in the single trapezoidal yoke of dynamic TRT can produce the induction electromotive force of peak value 6.8V, show that the vibration is sent out
The electricity consumption of the low-power equipments such as 3V, 5V is disclosure satisfy that after the rectified filter regulator circuit of electric installation.
Description of the drawings
Fig. 1 is a kind of longitudinal section structural representation of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention.
Fig. 2 is the vertical of a kind of vibrating shaft 1 of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention and trapezoidal yoke 6
Body structural representation.
Fig. 3 is that a kind of hollow cylinder hub 8 of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention is arranged on bottom
Dimensional structure diagram on lid 9.
Fig. 4 is a kind of planar structure schematic diagram of the top cover 2 of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention.
Fig. 5 is a kind of stereochemical structure of the cylinder type shell 4 of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention
Schematic diagram.
Fig. 6 is that a kind of stereochemical structure of the trapezoidal yoke 6 of embodiment of trapezoidal yoke permanent magnetic vibration TRT of the invention is shown
It is intended to.
It is 10Hz that Fig. 7 is frequency of vibration, and when amplitude is 10mm, single trapezoid magnet yoke winding lead-out wire of vibration generating device is defeated
Go out EMF waveform figure.
Wherein, 1- vibrating shafts；2- top covers；3- linear bearings；4- shells；5- set of permanent magnets；The trapezoidal yokes of 6- (or yoke)；
7- coils；8- hollow cylindrical hubs；9- bottoms；10- springs；11- flat keys；12- electrode seats；13- pole bodies；The trapezoidal magnetic poles of 14-；15-
Square keyway；16- quadrangular grooves；21- square grooves；22- coils go out line three-way hole；31-36 tetragonal body permanent magnets (or permanent magnet)；
37- table tops.
Specific embodiment
The present invention is explained further with reference to the accompanying drawings and examples, but protection scope of the present invention is not carried out with this
Any restriction.
Trapezoidal yoke permanent magnetic vibration TRT (abbreviation TRT, referring to Fig. 1-5) its agent structure of the invention is (as schemed
1) be cylindrical-shaped structure, including cylinder type shell 4, top cover 2 and bottom 9,4 upper and lower ends of shell by bolt respectively with top cover 2,
Bottom 9 is fixedly connected, and 2 center of top cover is provided with cylindrical hole, and the side at the center of top cover 2 is provided with coil and goes out line three-way hole 22, bottom
9 central upper portion of lid is provided with hollow cylindrical hub 8, and hub inner bottom part hollow parts place spring 10；The bottom of vibrating shaft 1 is in hub
Contact with spring 10；The upper end of vibrating shaft 1 passes perpendicularly through top cover 2 of the linear bearing 3 together with being secured to, and is higher by top cover
2；
The middle part of the vibrating shaft 1 is four-prism, and upper and lower two parts are cylindrical-shaped structure (such as Fig. 2), middle part
Four-prism is machined with quadrangular groove 16 four sides, in each quadrangular groove 16 equal bonding be placed with one it is trapezoidal
Yoke 6, the identical trapezoidal yoke 6 of totally four shape and structures, each trapezoidal yoke 6 (such as Fig. 6) include four trapezoidal magnetic poles
14th, two pole bodies 13 and an electrode seat 12, two pole bodies 13 are completely identical in structure cuboid, and the bottom surface of electrode seat 12 is adjacent
Both sides angle is 45 ° of parallelogram, and the bottom surface of electrode seat 12 is fixed in the quadrangular groove 16 of vibrating shaft 1, two pole bodies
Respectively relative with two of the electrode seat 12 long side in 13 one end is vertical to be fixed, vertical respectively inwards in the other end of each pole body 13
Be fixed with two trapezoidal magnetic poles 14, and trapezoidal magnetic pole 14 go to the bottom it is vertical with corresponding pole body be fixedly connected, on two pole bodies 13
Four trapezoidal magnetic poles 14 be staggered, and four trapezoidal magnetic poles are at grade, have gap between adjacent trapezoidal magnetic pole 14,
The polarity of four trapezoidal magnetic poles 14 is different successively from top to bottom；A coil is wound with each pole body 13 vertically
7, the coil winding direction all same of two in same electrode seat pole body 13, and two ends of corresponding two coils are connected
Connect, reserve two head ends as lead-out wires of coil, two lead-out wires of coil be one group of lead-out wires of coil, four trapezoidal yokes 6
Totally eight lead-out wires of coil, are divided into into four groups of lead-out wires of coil, and the coil of four groups of lead-out wires of coil from top cover 2 goes out line three-way hole
22 draw, and the coiling direction of 8 coils is all identical；
Four vertical table tops 37 being symmetrically distributed with the inside of cylinder type shell 4, each table top 37 add at middle part respectively
Work goes out six permanent magnet grooves, and six permanent magnet grooves embed set of permanent magnets 5 for bonding, totally four set of permanent magnets 5, each
Set of permanent magnets 5 includes six tetragonal body permanent magnet 31-36, the equal axial charging of six tetragonal body permanent magnet 31-36, and along phase
The permanent magnet groove of table top is answered to be close to successively from top to bottom be embedded in corresponding permanent magnet groove, the pole of six tetragonal body permanent magnets
Property direction is horizontal direction, and adjacent tetragonal body permanent magnet polarity is different successively；During equilbrium position in the middle part of vibrating shaft 1 positive four
The upper and lower ends face of prism is concordant with the upper and lower end face of four permanent magnets in centre of corresponding set of permanent magnets 5 respectively；Each is trapezoidal
Equidistant air gap is respectively kept between the end face outside of yoke 6 and the outer face of corresponding set of permanent magnets 5.
It is trapezoidal magnetic pole that further characteristic of the invention is the distance between two trapezoidal magnetic poles 14 on each pole body
1.1-1.5 times of base length.
Further characteristic of the invention is that 8 inwall of hollow cylindrical hub is provided with square groove 21, and 1 bottom of vibrating shaft is provided with
The square groove 21 of square keyway 15, square keyway 11 and hub inwall is connected by flat key 11, by vibrating shaft 1 and hollow cylindrical hub 8
It is fixed.
Further characteristic of the invention is that the top cover 2 and bottom 9 are the reeded column type aluminium alloy of boundary zone
The groove of plate, top cover 2 and bottom 9 is to embed cylinder type shell 4.Due to having stronger between set of permanent magnets 5 and trapezoidal yoke 6
Suction, here had both arranged groove, while shell 4, top cover 2 and bottom 9 is bolted in groove, relative to only by spiral shell
Bolt is fixedly connected, and more easily can be assembled, and improves the stability of TRT after assembling.
Further characteristic of the invention is that the trapezoidal yoke 6 is overall to be formed by No. 45 steel cuttings of permeability magnetic material.
The vibration condition that heretofore described vibration generating device is suitable for refers to frequency for 1-20Hz, vibration displacement peak value
For 1-20mm when vibration.The structure of four table tops 37 being symmetrically and evenly distributed in cylinder type shell 4 in the present invention is identical,
Permanent magnet groove is processed in medium position.Each 6 structure of trapezoidal yoke is identical.Cylinder type shell 4 and top cover 2 and bottom
The fixed form of lid 9 can be various structures mode, to facilitate installation and stable fixation to be defined, such as can be on top cover, bottom
Groove is set, and then cylinder is fixed in groove, then be screwed, it is also possible to which tenon is set on top cover, bottom and shell
Fourth of the twelve Earthly Branches structure, then be fixed.
TRT of the present invention can export certain voltage, go out four groups of lines of the extraction of line three-way hole 22 from the coil of top cover 2
Circle lead-out wire is not directly and needs the device of power supply to be connected, but needs to add follow-up rectification, filtering, surely
The electric energy process circuit such as pressure, energy storage, for so-called series connection and parallel connection are the load for different rated voltages herein, leads to
Cross the electric energy that the TRT sends to be required for being stored through energy-storage module, with very big using value.
Embodiment illustrated in fig. 1 shows that the agent structure of trapezoidal yoke permanent magnetic vibration TRT of the invention is cylinder, is wrapped
Cylinder type shell 4, top cover 2, vibrating shaft 1 and bottom 9 is included, 2 center of top cover is provided with cylindrical hole, the side at the center of top cover 2
It is provided with coil and goes out line three-way hole 22,9 central upper portion of bottom is welded with hollow cylindrical hub 8, and hub inwall is provided with square groove 21 (such as Fig. 3 institutes
Show), hub inner bottom part hollow parts place spring 10；The bottom of vibrating shaft 1 is contacted with spring 10 in hollow cylindrical hub 8；Vibration
The upper end of axle 1 passes perpendicularly through top cover 2 of the linear bearing 3 together with being secured to, and is higher by top cover 2；Top cover 2 and bottom 9 are equal
It is connected in corresponding groove with the upper and lower ends of cylinder type shell 4 by screw, is formed TRT highly stable
Cylindrical-shaped structure.
Four vertical table tops 37 are distributed with the inside of shell 4 symmetrically and evenly, the middle part of each table top 37 is vertically placed with
The tetragonal body permanent magnet 31-36 of six pieces of axial chargings of geomery identical, adjacent permanent magnet polarity are different.In vibrating shaft 1
The upper and lower ends face of the four-prism in portion is concordant with the upper and lower end face of four permanent magnets in centre of corresponding set of permanent magnets 5 respectively,
Trapezoidal yoke 6 i.e. in the middle part of vibrating shaft is right against four pieces of the centre of six pieces of permanent magnets in respective mesa 37 respectively；Each trapezoid magnet
Equidistant air gap is respectively kept between the end face outside of yoke 6 and the outer face of corresponding set of permanent magnets 5, the two of each trapezoidal yoke 6
Be wound with coil 7 on individual pole body 13 respectively, two groups of coil winding directions are identical, and end is connected, two head ends are reserved as line
Circle lead-out wire.
Embodiment illustrated in fig. 2 shows, is four-prism structure in the middle part of vibrating shaft of the present invention 1, and upper and lower two parts are
Cylindrical-shaped structure, and four sides of the four-prism at middle part process a quadrangular groove 16 at middle part respectively, to place
One trapezoidal yoke 6, quadrangular groove 16 are connected with the electrode seat of trapezoidal yoke 6, and the shape of quadrangular groove 16 and electrode seat 12
Mating shapes, 1 bottom of vibrating shaft is provided with square keyway 15, flat key 11 is fixed in square keyway 15 and 1 shape of vibrating shaft
Into an entirety.Whirling vibration axle 1, is made flat key 11 project vibration shaft portion and is alignd with the square groove 21 of 8 inwall of hollow cylindrical hub,
Vibrating shaft is slipped in hollow cylindrical hub 8 along square groove 21；
Each trapezoidal yoke 6 (such as Fig. 6) includes four trapezoidal magnetic poles, 14, two pole bodies 13 and an electrode seat 12, two poles
Body 13 is completely identical in structure cuboid, and it is 45 ° of parallelogram that electrode seat 12 is adjacent both sides angle, the bottom of electrode seat 12
It is fixed in the quadrangular groove 16 of vibrating shaft 1, relative with two of the electrode seat 12 long side in two 13 one end of pole body is vertical solid
It is fixed, be vertically and fixedly provided with two trapezoidal magnetic poles 14 respectively inwards in the other end of each pole body 13, and trapezoidal magnetic pole 14 go to the bottom with
Corresponding pole body is vertically fixedly connected, and the distance between trapezoidal magnetic pole of two on each pole body 14 is trapezoidal magnetic pole bottom side length degree
1.5 times, four trapezoidal magnetic poles 14 on two pole bodies 13 are staggered, and four trapezoidal magnetic poles are at grade, adjacent
There is gap between trapezoidal magnetic pole 14, the polarity of four trapezoidal magnetic poles 14 is different successively from top to bottom, such as four trapezoidal magnetic poles 14
Outside respectively N poles, S poles, N poles and S poles or respectively S poles, N poles, S poles and N poles；The size of each trapezoidal magnetic pole 14 is upper bottom
4mm, the 10mm that goes to the bottom, high 10mm, the prismatoid of thickness 2mm；Vertical dimension between two pole bodies 13 be 10mm, two pole body sizes
Respectively long 30mm, width 15mm, the rectangular-shape structure of thickness 2mm, electrode seat 12 be long length of side 30mm, its corresponding a height of 10mm,
45 ° of both sides angle, the bottom surface of thick 2mm are the prism of parallelogram；One is wound with each pole body 13 vertically
Two of individual coil 7, the coil winding direction all same of two in same electrode seat pole body 13, and corresponding two groups of coils are last
End is connected, and reserves two head ends as lead-out wires of coil, goes out line three-way hole 22 from the coil of top cover 2 and draw, four trapezoidal yokes 6
Shape and structure is identical, four trapezoidal yokes 6 totally 8 coils, draws eight head ends altogether as lead-out wires of coil, 8 coils
Coiling direction it is all identical, and line three-way hole 22 gone out by the coil of top cover draw, two coils that each trapezoidal yoke 6 is drawn
Lead-out wire is one group, and totally four groups of lead-out wires of coil, then by four groups of lead-out wires of coil or series connection or can be used separately as needed.
When the lead-out wires of coil in four trapezoidal yokes 6 is joined end to end successively, two for reserving lead-out wires of coil is electric equivalent to four
Subject string is linked togather, and makes always to export electromotive force enhancing.In the present embodiment, each coil is 250 circles, and it is 0.5mm that coil is line footpath
Copper enamel-covered wire.
Embodiment illustrated in fig. 3 shows, 9 upper weld hollow cylindrical hub 8 of TRT bottom, and spring 10 is built in hollow
8 inner bottom part of column type hub.Bottom 9 is that radius is 42mm, the cylindrical aluminum alloy sheets of a height of 10mm, the top surface edge of bottom 9
The groove corresponding to shell 4 is provided with, the groove of bottom is to embed cylinder type shell 4；It is 8 internal diameter 4mm of hollow cylindrical hub, outer
Footpath 6mm, high 30mm, after the completion of assembling, bottom 9 steadily can be contacted with ground.Square groove 21 is provided with hollow cylindrical hub 8, will be installed
The vibrating shaft one end for having flat key 11 is slipped in hollow cylindrical hub 8, realizes that propeller boss coordinates, prevents TRT in vibration processes
Deflection.Spring 10 of the placing height for 25mm in hollow cylindrical hub 8, spring 10 are that vibrating shaft 1 provides restoring force.
Embodiment illustrated in fig. 4 shows that 2 center of TRT top cover is provided with the cylindrical hole of diameter 4mm, along the cylinder
Through hole is provided with four screw holes for one week for fixing linear bearing 3, and the side at 2 center of top cover is provided with the square coil of 10*10mm
Go out line three-way hole 22.
Embodiment illustrated in fig. 5 shows, symmetrical on the inside of the cylinder type shell 4 of trapezoidal yoke permanent magnetic vibration TRT of the invention
Four vertical table-boards 37 are evenly distributed with, the middle part of each table top 37 is equipped with six permanent magnet grooves, and six permanent magnets are recessed
Groove is used for embedding a set of permanent magnets 5, six piece tetragonal body permanent magnet 31-36s of each set of permanent magnets 5 by six axial chargings
Constitute, six pieces of tetragonal body permanent magnet 31-36 are close to be placed in corresponding permanent magnet groove from top to bottom successively, six pieces of tetragonal bodies
Permanent magnet 31-36 polar orientations are horizontal direction, and adjacent permanent magnet polarity is different successively, such as the same side permanent magnet from top to bottom
Polarity respectively be N poles, S poles, N poles, S poles, N poles and S poles or respectively be S poles, N poles, S poles, N poles, S poles and N poles.
The internal diameter of shell 4 is 32mm, and external diameter is 38mm, a height of 120mm, and on each table top 37, the overall dimensions of six permanent magnet grooves are
10*60*1mm, the size of single permanent magnet is 10*10*4mm.
Dynamic process：When the acting on of external force F necessarily changed by vibrating shaft 1, power F is passed to into spring 10, this
During trapezoidal yoke 6 on vibrating shaft 1 produce relative motion with the set of permanent magnets 5 on the inside of cylinder type shell 4, spring 10 occurs
Deformation, when external force disappears, due to the effect of spring 10, vibrating shaft 1 is returned to equilbrium position.In the process, with vibration
The vibration of axle 1, during magnetic circuit part intrinsic inductance B being made up of the set of permanent magnets 5 and trapezoidal yoke 6 on cylinder type shell 4
Quarter changes, and according to Faraday law of electromagnetic induction, when magnetic induction density B changes, produces induction electromotive force in coil.
Embodiment 1
It is cylindric with circle shape groove that the present embodiment adopts above-mentioned connected mode, top cover 2 and bottom 9 to be edge
Plate, top cover, the groove of bottom are to embed middle cylinder type shell 4.Six pieces on the inside of cylinder type shell 4 on each table top 37
Tetragonal body permanent magnet 31-36 (each tetragonal body permanent magnet is Nd-Fe-B permanent magnet (Nd2Fe14B, model N45)) longitudinal directions are tight
Stick together, polarity is successively conversely, be symmetrically and evenly distributed with four groups of set of permanent magnets 5 along shell.1 part of vibrating shaft：From in
Portion is four-prism, upper and lower two parts are the aluminium alloy (non-magnet material) of cylinder as vibrating shaft 1, it is to avoid affect magnetic
Road.Vibrating shaft total length 120mm, a diameter of 8mm in two ends, the quadrangular groove size of four sides of middle part four-prism is
16*1*40mm, wherein 1mm are the thickness fallen in the middle of quadrangular groove, and the four-prism size at middle part is 20*20*
40mm, top vibration axial length 50mm, vibration axial length 30mm of bottom.
Each trapezoidal yoke 6 totally four trapezoidal magnetic poles 14, the size of each trapezoidal magnetic pole 14 are gone to the bottom 10mm for upper bottom 4mm,
High 10mm, thick 2mm；Vertical dimension between two pole bodies 13 is 10mm, and two pole body sizes are long 30mm, wide 15mm, thick
The rectangular-shape structure of 2mm, electrode seat 12 be long length of side 30mm, its corresponding a height of 10mm, 45 ° of both sides angle, the bottom surface of thick 2mm
For the prism of parallelogram, a coil on each pole body, is wound with, each coil totally 250 circle, coil for line footpath is
The copper enamel-covered wire of 0.5mm；The upper and lower ends face of this trapezoidal yoke 6 corresponds to the upper of four permanent magnets in centre of set of permanent magnets 5 respectively
Lower surface.Four trapezoidal yokes 6 are identical.Vibration shaft end is provided with square keyway 15, and flat key 11 is fixed on square keyway
In 15, it is therefore an objective to prevent TRT in vibration processes, vibrating shaft deflects.1 lower end end flat key 11 of vibrating shaft is aligned
Square groove 21, vibrating shaft are slipped in hollow cylindrical hub 8 along square groove and are connected with hub inner spring 10, and vibrating shaft upper end is higher by linear axis
3 and top cover 2 is held, prestressing force can be loaded into vibrating shaft upper end surface.
Fig. 1 is the installation diagram of trapezoidal yoke permanent magnetic vibration TRT.During test, external force acts on 1 upper surface of vibrating shaft,
Vibration shaft end is contacted with spring, compression spring.For preventing vibrating shaft 1 from deflecting in vibration processes, in vibration shaft end
It is provided with the square keyways 15 of 1.5 × 2 × 4mm, square keyway is built into 3 × 2 × 4mm flat keys 11, flat key placed-depth is 2mm and shake
Moving axis realizes tight connection.The size of hollow cylindrical hub 8 is 4mm × 6mm × 20mm, and hub inwall is provided with 3 × 2 × 20mm square grooves
21, to realize coupling with flat key, this propeller boss fit structure causes TRT not deflect in vibration processes.Vibrating shaft
On four pieces of yokes be trapezoidal yoke, the part for connecting two pole bodies is electrode seat, and each trapezoidal yoke has four trapezoidal magnetic poles
14, trapezoidal magnetic pole 14 is vertical with pole body 13 so that flow direction occurs 90 degree of deflections on pole body, adjacent different via polarity
After permanent magnet magnetization, adjacent trapezoidal magnetic pole is geomagnetic into contrary polarity；It is wound with a coil on two pole bodies 13 respectively
7, when vibrating shaft occurs to vibrate, the polarity of same trapezoidal magnetic pole 14 can change, and cause to send out by the magnetic flux of coil
Changing, according to Faraday law of electromagnetic induction, can produce induction electromotive force, emulate in each the trapezoidal yoke for obtaining on coil
The voltage waveform (referring to Fig. 7) of lead-out wires of coil.
Fig. 7 is the output EMF waveform figure that frequency of vibration is 10Hz, amplitude is vibration generating device under the conditions of 10mm.Figure
Middle abscissa Time represents the time, and unit is the second, and vertical coordinate U represents output voltage, and unit is volt.Vibration is sent out as shown in Figure 7
The induction electromotive force peak value of the lead-out wires of coil in the single trapezoidal yoke of electric installation be 6.8V, energy after rectified filter regulator circuit
Enough meet the electricity consumption of the low-power equipments such as 3V, 5V, its main cause is：1st, TRT employs trapezoidal yoke as magnetic conduction road
Footpath, can greatly reduce leakage field, reduce air-gap reluctance, improve the Distribution of Magnetic Field in yoke；2nd, coil winding is in pole body
Part, the magnetic flux that this part passes through are 6 the best part of whole trapezoidal yoke, and are easy to fixed and coiling；3rd, permanent magnet with
Between yoke, air gap diminishes, and reduces leakage field, improves magnetic field utilization rate；4th, TRT employs the cylindric knot of closing
Structure, makes TRT produce induction electromotive force at space four sides using magnetic field, improves the utilization ratio in magnetic field and space；Simultaneously
Due to TRT in space be uniformly distributed structure for vibrating shaft, the power that each direction is received is equal in magnitude, then vibrate
The four direction that axle is subject to is 0 with joint efforts, so as to reduce the active force for acting on vibrating shaft during vibration, single trapezoidal yoke 6
Coil lead-out wire peak value is 6.8V, and TRT has four yokes, and eight lead-out wires of coil are divided into four groups of coils and draw
Line, the electric energy of four groups of lead-out wires of coil overall outputs are bigger.Experiment shows, the rectified filtering voltage regulation of vibration generating device of development
The electricity consumption of the low-power equipments such as 3V, 5V is disclosure satisfy that after circuit.
Embodiment 2
With embodiment 1, difference is that top cover 2 and bottom 9 pass through mutual with shell 4 to the connected mode of the present embodiment
The mortice and tenon joint close structure matched somebody with somebody is fixedly connected.The TRT is 1-20Hz in frequency of vibration, and vibration displacement peak value is 1-20mm
When can export larger output voltage.
Unaccomplished matter of the present invention is known technology.
Claims (5)
1. a kind of trapezoidal yoke permanent magnetic vibration TRT, it is characterised in that the agent structure of the TRT is cylindric knot
Structure, including cylinder type shell, top cover, vibrating shaft and bottom, shell upper and lower ends are fixed with top cover, bottom by bolt respectively and are connected
Connect, top cap central is provided with cylindrical hole, the side at the center of top cover is provided with coil and goes out line three-way hole, and bottom central upper portion is provided with
Hollow cylindrical hub, hub inner bottom part hollow parts place spring；The bottom of vibrating shaft is contacted with spring in hub；Vibrating shaft it is upper
End passes perpendicularly through top cover of the linear bearing together with being secured to, and is higher by top cover；
The middle part of the vibrating shaft is four-prism, and the upper and lower two parts of vibrating shaft are cylindrical-shaped structure, positive four rib at middle part
Cylinder is machined with quadrangular groove four sides, and in each quadrangular groove, equal bonding is placed with a trapezoidal yoke, and totally four
The identical trapezoidal yoke of individual shape and structure, each trapezoidal yoke include four trapezoidal magnetic poles, two pole bodies and an electrode seat,
Two pole bodies are completely identical in structure cuboid, and the bottom surface of electrode seat is the parallelogram that adjacent both sides angle is 45 °, electrode seat
Bottom surface be fixed in the quadrangular groove of vibrating shaft, respectively relative with the two of the electrode seat long side in two pole body one end is vertical
It is fixed, be vertically and fixedly provided with two trapezoidal magnetic poles respectively inwards in the other end of each pole body, and trapezoidal magnetic pole go to the bottom with it is corresponding
Pole body be vertically fixedly connected, four trapezoidal magnetic poles on two pole bodies are staggered, and four trapezoidal magnetic poles are in same plane
On, there is gap between adjacent trapezoidal magnetic pole, the polarity of four trapezoidal magnetic poles is different successively from top to bottom；Along perpendicular on each pole body
Nogata is to being wound with a coil, the coil winding direction all same of two in same electrode seat pole body, and same pole
Two ends of two coils on seat are connected, and reserve two head ends as lead-out wires of coil, and two lead-out wires of coil are
One group of lead-out wires of coil, four trapezoidal yokes totally eight lead-out wires of coil, is divided into into four groups of lead-out wires of coil, and four groups of coils draw
Outlet goes out line three-way hole extraction from the coil of top cover, and the coiling direction of eight coils is all identical；
Four vertical table tops being symmetrically distributed with the inside of cylinder type shell, each table top process six forever at middle part respectively
Magnet groove, six permanent magnet grooves embed set of permanent magnets for bonding, totally four set of permanent magnets, and each set of permanent magnets is wrapped
Include six tetragonal body permanent magnets, the equal axial charging of six tetragonal body permanent magnets, and along respective mesa permanent magnet groove from upper
It is close to successively be embedded in corresponding permanent magnet groove under, the polar orientation of six tetragonal body permanent magnets is horizontal direction, and
Adjacent tetragonal body permanent magnet polarity is different successively；The upper and lower ends face of four-prism during equilbrium position in the middle part of vibrating shaft respectively with
The upper and lower end face of four permanent magnets in centre of corresponding set of permanent magnets is concordant；The end face outside of each trapezoidal yoke with it is corresponding forever
Equidistant air gap is respectively kept between the outer face of magnet group.
2. trapezoidal yoke permanent magnetic vibration TRT according to claim 1, it is characterised in that two on each pole body
The distance between trapezoidal magnetic pole goes to the bottom 1.1-1.5 times of length for trapezoidal magnetic pole.
3. trapezoidal yoke permanent magnetic vibration TRT according to claim 1, it is characterised in that the hollow cylindrical hub
Inwall is provided with square groove, and vibrating shaft bottom is provided with the square groove of square keyway, square keyway and hub inwall and is connected by flat key, will vibration
Axle is fixed with hollow cylindrical hub.
4. trapezoidal yoke permanent magnetic vibration TRT according to claim 1, it is characterised in that the top cover and bottom are equal
For the reeded column type aluminium alloy plate of boundary zone, top cover and bottom groove to embed cylinder type shell.
5. trapezoidal yoke permanent magnetic vibration TRT according to claim 1, it is characterised in that the trapezoidal yoke entirety
Formed by No. 45 steel cuttings of permeability magnetic material.
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| CN111064340B (en) * | 2020-01-15 | 2022-04-19 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
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| CN102594082A (en) * | 2012-02-20 | 2012-07-18 | 何熊熊 | Vibration power generation device |
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