CN204538936U - A kind of low frequency permanent magnetic vibration generator - Google Patents
A kind of low frequency permanent magnetic vibration generator Download PDFInfo
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- CN204538936U CN204538936U CN201520220164.5U CN201520220164U CN204538936U CN 204538936 U CN204538936 U CN 204538936U CN 201520220164 U CN201520220164 U CN 201520220164U CN 204538936 U CN204538936 U CN 204538936U
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Abstract
The utility model relates to a kind of low frequency permanent magnetic vibration generator, it is characterized in that, the agent structure of this generator is four-prism, comprise four side plates, upper end cover and bottom end covers, four side plates are all fixedly connected with bottom end cover with upper end cover, upper end cover central aperture, hollow cylindrical hub is installed on bottom end cover top, and hub inner bottom part hollow parts places spring; Hub top is installed and the lower flange bearing of vibrating shaft same inner diameter, and lower flange bearing is connected and fixed by bolt and hollow cylindrical hub top, and lower flange bearing is passed in hub and spring contact in the bottom of vibrating shaft; The upper end of vibrating shaft through upper flange bearing and the upper end cover that is fixed together with it, and exceeds upper end cover.The utility model is at vibration frequency 1.25Hz, under the sinusoidal vibration excitation of peak value 150mm condition, lead-out wires of coil on the single side plate of vibrating electricity generator can produce the induced electromotive force of peak value 30V, shows that this vibrating electricity generator is provided with comparatively considerable output voltage at low frequency.
Description
Technical field
The utility model relates to the device mechanical energy of vibration being converted to electric energy, particularly permanent magnetic vibration Blast Furnace Top Gas Recovery Turbine Unit (TRT), and core is permanent magnetic vibration axle, yoke, hub and four-prism shell.This vibrating power-generation function forms closed magnetic circuit, leakage flux is significantly reduced, has higher power output at low frequency.
Background technology
Permanent magnetic vibration generator is the Blast Furnace Top Gas Recovery Turbine Unit (TRT) utilizing the law of electromagnetic induction to be electric energy by ambient vibration power conversion, its have generated output large, be easy to the advantages such as maintenance.
According to the difference of vibrating mass, can dynamic iron (magnet movement), moving-coil (coil movement) and iron ring be divided into dynamic (magnet coil associated movement) three types permanent magnetic vibration generator.It is motionless that moving iron is coil, and magnet opposed coil vibrates, and in coil, magnetic flux changes, thus produces induced electromotive force in coil.It is motionless that moving-coil type is magnet, and coil opposed magnet vibrates, and in coil, magnetic flux changes, thus produces induced electromotive force in coil; In order to the electric energy improved further under low-frequency vibration exports, there is the vibration energy collector of iron ring with the vibration shape.Iron ring is under extraneous inputted vibration with the vibration shape, and magnet and coil all produce vibration, but have relative motion between the two, in coil, produce induced electromotive force.
Existing permanent magnetic vibration generator is mostly small energy collector, and great majority do not utilize yoke to carry out magnetic conduction, causes the waste on a large scale in magnetic field; And when there is no a yoke, object can not be had, in a planned way set up magnetic conduction path, the rate of change by the magnetic flux in coil can not be improved according to Faraday's electromagnetic induction law better, thus improve and export induced electromotive force.Application number be 201310444325.4 Chinese patent disclose a kind of electromagnetic type vibration generator, this generator forms closed magnetic circuit by vibrating shaft and the left and right yoke of E type, coil winding is in yoke electrode seat, improve magnetic field utilance, but generator is left and right symmetrical structure, and the space not making full use of front and rear sides generates electricity.To sum up, the output induced electromotive force of permanent magnetic vibration generator, voltage volume ratio, magnetic structure also have and very large improve space.
Utility model content
For existing vibrating electricity generator Problems existing, consider the vibration under low frequency Large travel range condition, devise a kind of low frequency permanent magnetic vibration generator.This vibrating electricity generator core component is the design of yoke, vibrating shaft, propeller boss and shell.It may be used for low frequency Large travel range condition, and namely frequency is 1-5Hz, and vibration displacement peak value is the vibrating power-generation under 100-200mm condition.Curvature adopts DW465-50 type silicon steel plate stacking and is shaped as closed magnetic circuit, and leakage field is significantly reduced, and improves the utilance in magnetic field, and reduces the eddy current loss in yoke.The material of vibrating shaft structure permanent magnet is neodymium iron boron (Nd2Fe14B), and model is N45.The effect of hub structure prevents vibrating electricity generator moment of being rotated and bearing is rotated and causes magnetic circuit asymmetric in the process of vibration, improves generating efficiency, and increase the stability of system in vibration.Vibrating electricity generator uses linear bearing to carry out spacing to permanent magnet and yoke, reduces the impact that magneticaction produces Generator Vibration.Generator curvature is tied with coil, and for improving output voltage, the connecting mode of same yoke coil adopts the mode of adjacent coupled in series successively.Theoretical and experiment shows that vibrating electricity generator is 1.25Hz in frequency, and when amplitude is 150mm, on single side plate, lead-out wires of coil output voltage peak value is 30V.
The technical scheme that the utility model solve the technical problem employing is: a kind of low frequency permanent magnetic vibration generator, it is characterized in that, the agent structure of this generator is four-prism, comprise four side plates, upper end cover and bottom end covers, four side plates are all fixedly connected with bottom end cover with upper end cover, upper end cover central aperture, hollow cylindrical hub is installed on bottom end cover top, and hub inner bottom part hollow parts places spring; Hub top is installed and the lower flange bearing of vibrating shaft same inner diameter, and lower flange bearing is connected and fixed by bolt and hollow cylindrical hub top, and lower flange bearing is passed in hub and spring contact in the bottom of vibrating shaft; The upper end of vibrating shaft through upper flange bearing and the upper end cover that is fixed together with it, and exceeds upper end cover;
Described vibrating shaft is the symmetrical column structure that middle part is bonded with mover silicon steel sheet, and mover silicon steel sheet part is circumferentially evenly distributed with four grooves, is embedded with three pieces of arc magnetic shoe permanent magnets be close together in each mover silicon steel sheet groove from top to bottom; Three pieces of adjacent different arrangements of arc magnetic shoe permanent magnet polarity in each mover silicon steel sheet groove groove; Polarity and the arrangement mode of the arc magnetic shoe permanent magnet in four mover silicon steel sheet groove grooves are identical;
All be provided with at the middle part of each side plate by the pole shoe yoke of some identical silicon steel sheet vertical stackings of shape specification, each pole shoe yoke comprises three pole shoes, four mover silicon steel sheet grooves of the mover silicon steel sheet part in the middle part of vibrating shaft are right against the pole shoe yoke in respective side panels respectively, align with the upper and lower end face of side plate pole shoe yoke respectively in mover silicon steel sheet upper and lower end face in the middle part of vibrating shaft, and outside arc magnetic shoe permanent magnet on the outside pole shoe end face part of each pole shoe yoke and vibrating shaft between leave equidistant air gap respectively; The pole body of each pole shoe is tied with coil, the coiler part head and the tail adjacent coupled in series successively on three pole bodies of each yoke, each like this pole shoe yoke draws two lead-out wires of coil altogether; Each side plate leaves side plate through-hole to draw lead-out wires of coil.
Described upper end cover and bottom end cover are the cuboid plate of edge with square indentations, and the groove of upper and lower end cap is in order to embed four side plates.
Described hollow cylindrical hub inwall has square groove, and vibrating shaft bottom has square keyway, and square keyway is connected by flat key with the square groove of hub inwall, vibrating shaft and hollow cylindrical hub is fixed.
Described pole shoe yoke is formed by the 100-200 sheet silicon steel sheet vertical stacking that shape specification is identical.
Compared with prior art, the beneficial effects of the utility model are:
(1) air gap between permanent magnet and yoke is less, is 2.5mm, when ensureing to install simplification, considerably reducing the leakage field in air, improve the utilance in magnetic field;
(2) magnetic yoke structure is designed to pole shoe yoke, each pole shoe is right against permanent magnet, and the advantage of this structure is to obtain good linear distribution magnetic field, can reducing air-gap reluctance, improve main pole Distribution of Magnetic Field, and suitably can reduce the consumption of yoke material;
(3) the pole body part in yoke is narrower than pole shoe, coil winding is on pole body, make more easily to fix around the coil on pole body, and magnetic flux on pole body is larger, when moving, the different permanent magnet of polarity is placed and is made the flux change rate on pole body comparatively large, and flux value is comparatively large, is more conducive to produce high electromotive force;
(4) generator designs is four-prism structure, can use the magnetic field of four direction in space, further increases the utilance in space and magnetic field; Because generator is four-prism structure, the permanent magnet of middle vibrating shaft four side corresponds respectively to the yoke on four side plates, concerning vibrating shaft, cubic upwards each party is to the power equal and opposite in direction be subject to, thus making a concerted effort of the four direction that is subject to of vibrating shaft is 0, thus act on the active force of vibrating shaft when reducing vibration; In addition, groove and bolt can be used as the coupling part of upper and lower end cap and side plate simultaneously, both attractive in appearance, be beneficial to assembling, the stability of device can be improved again better;
(5) vibrating shaft of generator is the position that directly can apply vibrational excitation, the pole shoe yoke vibrated on axial permanent magnet and four side plates forms closed magnetic circuit respectively, four groups of permanent magnets on vibrating shaft often organize the permanent magnet having three polarity different successively from top to bottom, when vibrating shaft moves, this permanent magnet places the rate of change that can improve magnetic flux on yoke pole body, according to Faraday's electromagnetic induction law, coil is made to produce larger induced electromotive force;
(6) experimental data shows, the utility model is at vibration frequency 1.25Hz, under the sinusoidal vibration excitation of peak value 150mm condition, lead-out wires of coil on the single side plate of vibrating electricity generator can produce the induced electromotive force of peak value 30V, shows that this vibrating electricity generator is provided with comparatively considerable output voltage at low frequency.
Accompanying drawing explanation
Fig. 1 is the vertical section structural representation of a kind of embodiment of the utility model low frequency permanent magnetic vibration generator.
Fig. 2 is the perspective view of the vibrating shaft 1 of a kind of embodiment of the utility model low frequency permanent magnetic vibration generator.
Fig. 3 is the perspective view that the hollow cylinder hub 7 of a kind of embodiment of the utility model low frequency permanent magnetic vibration generator is arranged on bottom end cover 10.
Fig. 4 is the perspective view of the side plate 11 of a kind of embodiment of the utility model low frequency permanent magnetic vibration generator.
Fig. 5 is vibration frequency is 1.25Hz, and when amplitude is 150mm, the one-sided board coil lead-out wire of vibrating electricity generator exports EMF waveform figure.
Wherein, 1-vibrating shaft; 2-upper end cover; 3-pole tip; 4-upper flange bearing; 5-pole shoe yoke (or yoke); 6-lower flange bearing; 7-hollow cylindrical hub; 8-spring; 9-side plate through-hole; 10-bottom end cover; 11-side plate; 12-flat key; 13-square groove; 14-pole body; 15-coil; 16-electrode seat; 21-mover silicon steel sheet; 22-24 arc magnetic shoe permanent magnet (or permanent magnet); The square keyway of 25-; 26-mover silicon steel sheet groove.
Embodiment
Explain the utility model further below in conjunction with drawings and Examples, but with this, any restriction is not carried out to protection range of the present utility model.
The utility model low frequency permanent magnetic vibration generator (is called for short generator, see Fig. 1-4) its agent structure (as Fig. 1) is four-prism, comprise four side plates 11, upper end cover 2 and bottom end cover 10, four side plates 11 are all fixedly connected with bottom end cover 10 with upper end cover 2, upper end cover 2 central aperture, hollow cylindrical hub 7 is installed on bottom end cover 10 top, and hub inner bottom part hollow parts places spring 8; The lower flange bearing 6 with vibrating shaft 1 same inner diameter is installed at hub top, and lower flange bearing 6 is connected and fixed by bolt and hollow cylindrical hub 7 top, and the bottom of vibrating shaft 1 contacts with spring 8 in hub through lower flange bearing 6; The upper end of vibrating shaft 1 through upper flange bearing 4 and the upper end cover 2 that is fixed together with it, and exceeds upper end cover 2;
Described vibrating shaft 1 is bonded with the symmetrical column structure (as Fig. 2) of mover silicon steel sheet 21 for middle part, the mover silicon steel sheet part at middle part is circumferentially evenly distributed with 4 mover silicon steel sheet grooves 26, is embedded with three pieces of arc magnetic shoe permanent magnets (22-24) be close together in each mover silicon steel sheet groove 26 from top to bottom; Three pieces of adjacent different arrangements of arc magnetic shoe permanent magnet polarity in each mover silicon steel sheet groove groove; Polarity and the arrangement mode of the arc magnetic shoe permanent magnet in four mover silicon steel sheet groove grooves are identical;
All be provided with at the middle part of each side plate 11 by the pole shoe yoke 5 (as Fig. 4) of some identical silicon steel sheet vertical stackings of shape specification, each pole shoe yoke 5 comprises three pole shoes, four mover silicon steel sheet grooves 26 of mover silicon steel sheet 21 part in the middle part of vibrating shaft are right against the pole shoe yoke in respective side panels 11 respectively, align with the upper and lower end face of side plate pole shoe yoke respectively in mover silicon steel sheet 21 upper and lower end face in the middle part of vibrating shaft, and leave equidistant air gap respectively between arc magnetic shoe permanent magnet (22-24) outside on the outside pole shoe end face part of each pole shoe yoke 5 and vibrating shaft 1, the pole body 16 of each pole shoe is tied with coil 15, three coiler part head and the tail adjacent coupled in series successively on three pole bodies of each pole shoe yoke, each like this pole shoe yoke draws two lead-out wires of coil altogether, namely the stem of first coil leaves lead-out wires of coil, afterbody is connected with the stem of second coil, the afterbody of second coil is connected with the stem of the 3rd coil, the afterbody of the 3rd coil leaves lead-out wires of coil (first coil referred to here, second coil and the 3rd coil are relative concepts, can according to order from top to bottom, also can according to order from bottom to up, in four pole shoe yokes, the order of connection of coil is consistent), each side plate 11 leaves side plate through-hole 9 to draw lead-out wires of coil.
Of the present utility modelly be further characterized in that described hollow cylindrical hub 7 inwall has square groove 13, vibrating shaft 1 bottom has square keyway 25, and square keyway 25 is connected by flat key 12 with the square groove 13 of hub inwall, vibrating shaft 1 and hollow cylindrical hub 7 is fixed.
Of the present utility modelly be further characterized in that described upper end cover 2 and bottom end cover 10 are the cuboid plate of edge with square indentations, the groove of upper and lower end cap is in order to embed four side plates 11.Owing to having stronger suction between permanent magnet (22-24) and yoke 5, at this, both groove was set, and in groove, was bolted side plate and end cap simultaneously, is fixedly connected with relative to by means of only bolt, more easily can assemble, improve the stability of the rear generator of assembling.
Of the present utility modelly be further characterized in that described pole shoe yoke is formed by the 100-200 sheet silicon steel sheet vertical stacking that shape specification is identical.
Vibration under low frequency Large travel range condition described in the utility model refers to that frequency is 1-5Hz, vibration when vibration displacement peak value is 100-200mm.In the utility model, upper flange bearing 4 is identical with the structure of lower flange bearing 6, and the permanent magnet portion about centre is symmetrical; The structure of four side plates 11 is identical, and every two side plates 11 are contacted between place and are connected and fixed successively by screw.Each pole shoe yoke 5 structure is identical.The fixed form of four side plates and upper end cover and bottom end cover can be various structures mode, fixedly be as the criterion to facilitate to install and stablize, as covered at upper and lower side, groove is set, and then side plate is fixed in groove, be screwed again, also mortise structure can be set on upper and lower end cap and side plate, then be fixed.
Embodiment illustrated in fig. 1, the agent structure of generator is four-prism, bottom end cover 10 upper weld hollow cylindrical hub 7, and hub inwall has square groove 13 (as shown in Figure 3), and hub inner bottom part hollow parts places spring 8; The lower flange bearing 6 with vibrating shaft 1 same inner diameter is installed at hub 7 top, lower flange bearing 6 is connected and fixed by the top of screw and hollow cylindrical hub 7, the bottom of vibrating shaft 1 contacts with spring 8 in hollow cylindrical hub 7 through lower flange bearing 6, the upper end of vibrating shaft 1 through upper flange bearing 4 and the upper end cover 2 that is fixed together with it, and exceeds upper end cover 2.Upper end cover 2 and bottom end cover 10 are all connected and fixed with four side plates 11 by screw in corresponding groove, make generator form highly stable four-prism formula structure.
All be provided with at the middle part of each side plate 11 by the yoke 5 of 100 identical silicon steel sheet vertical stackings of shape specification, often organizing pole shoe yoke all has three pole shoes, and each side plate middle and upper part is divided and is equipped with through hole 9, to draw corresponding yoke coil lead-out wire.(four mover silicon steel sheet grooves 26 of mover silicon steel sheet 21 part namely in the middle part of vibrating shaft are right against the pole shoe yoke in respective side panels 11 respectively) is alignd respectively in three pole shoe centers of each pole shoe yoke 5 with three pieces of arc magnetic shoe permanent magnet 22,23,24 centers of longitudinal arrangement in vibrating shaft 1, aliging with the upper and lower end face of side plate pole shoe yoke respectively in mover silicon steel sheet 21 part upper and lower end face in the middle part of vibrating shaft, and often organizes between the arc magnetic shoe permanent magnet (22-24) on the outside pole shoe end face part of pole shoe yoke 5 and vibrating shaft 1 and leave equidistant air gap respectively; The pole body of each pole shoe yoke 5 is tied with coil 15, and the coiler part head and the tail adjacent coupled in series successively in each yoke, each yoke leaves altogether two lead-out wires of coil.
Embodiment illustrated in fig. 2ly to show, vibrating shaft 1 described in the utility model is bonded with the symmetrical column structure of the stacking mover silicon steel sheet 21 of level for middle part, middle part silicon steel sheet part surrounding is evenly provided with four silicon steel sheet grooves 26, each silicon steel sheet groove 26 is embedded with the arc magnetic shoe permanent magnet 22,23,24 of polarity out-phase arrangement from top to bottom, vibrating shaft 1 bottom has square keyway 25, is fixed in square keyway 25 by flat key 12 and forms an entirety with vibrating shaft.Whirling vibration axle 1, make its flat key 12 give prominence to vibrating shaft part and align with the square groove 13 of hollow cylindrical hub 7 inwall, vibrating shaft slips in hollow cylindrical hub 7 along square groove 13.
Embodiment illustrated in fig. 3ly show, generator bottom end cover 10 upper weld hollow cylindrical hub 7, spring 8 is built in hollow cylindrical hub 7 inner bottom part.Bottom end cover 10 is long and wide is 250mm, the thick cuboid aluminium alloy plate for 10mm, and the bottom edge of bottom end cover 10 is provided with square indentations, and the groove of bottom end cover is in order to embed four side plates 11; Hub internal diameter 26mm, external diameter 60mm, high 300mm, hub upper surface has M4 screw along surrounding, and pitch-row and the bearing flange pitch-row diameter that is consistent is 51mm, has assembled posterior end lid 10 and can steadily contact with ground.Screw is utilized to be fixedly connected with lower flange bearing 6 by hollow cylindrical hub 7.Have square groove 13 in hollow cylindrical hub 7, the vibrating shaft one end being provided with flat key 12 is slipped in hollow cylindrical hub 7, realize propeller boss and coordinate, prevent generator from deflecting in vibration processes.In hollow cylindrical hub 7, placing height is the spring 8 of 200mm, for vibrating shaft 1 provides restoring force.
Embodiment illustrated in fig. 4ly to show, side plate and pole shoe curvature: the pole shoe curvature on each side plate respectively adopts 100 thick silicon steel plate stackings of 0.5mm to form, and determines the size of yoke front end face according to the magnetic property of permanent magnetic material and the BH curve of silicon steel sheet.Pole shoe yoke and side plate coupling part are electrode seat 16, electrode seat is equidistantly distributed with three pole shoes, pole shoe comprises pole tip 3 and pole body 14, pole body is connected with pole tip, each pole body is wound with coil, each pole tip 3 is made up of rectangular segment and isosceles trapezoid part, the isosceles trapezoid part of pole tip 3 is between pole body 14 and the rectangular segment of pole tip, pole tip rectangular segment, isosceles trapezoid part and pole body 14 form a pole shoe jointly, the wherein long 40mm of pole body, wide 20mm, the length of electrode seat part is 150mm, and wide is 10mm; The long 46mm of rectangular segment of pole tip, wide 2mm, isosceles trapezoid part water table opening is wide identical with pole body 14, is 20mm, and the appearance of base square and pole tip 3 rectangular segment is same, and be 46mm, the height of isosceles trapezoid part is 5mm.Three pole shoes are to each other apart from 4mm.With seccotine by identical for shape specification 100 silicon steel sheet vertical stackings and together with being adhesively fixed with side plate.Side plate altogether long 876mm, wide 234mm, thick 13mm, middle side plate groove is dark 3mm, wide 50mm, and the wide of side side plate of side plate groove is 85.5mm, the wide 98.5mm of opposite side, pole shoe yoke with the long 213mm of epipleural, the long 150mm of pole shoe yoke.Pole shoe yoke has the square side plate through-hole 9 of 20mm × 20mm with epipleural center.The counterclockwise coiling of coil on top-down first pole body of pole shoe yoke, the clockwise coiling of coil on second pole body, the counterclockwise coiling of coil on the 3rd pole body; Coil end on first pole body is welded with coil head end on second pole body, on second pole body, coil end welds with coil head end on the 3rd pole body, and on first pole body, on coil head end and the 3rd pole body, the lead-out wires of coil of coil end is drawn by side plate through-hole 9; Then can as required by the lead-out wires of coil of four side plates or series connection or separately use.When the lead-out wires of coil on four side plates joins end to end successively, two lead-out wires of coil reserved are equivalent to four power sources in series together, make always to export electromotive force and strengthen.
Dynamic process: when Generator Vibration axle 1 is subject to the effect of the external force F of certain change, power F is passed to spring 8, pole shoe yoke 5 in this process on vibrating shaft 1 and four side plates 11 produces relative motion, there is deformation in spring 8, when external force disappears, due to the effect of spring 8, vibrating shaft 1 is returned to equilbrium position.In the process, along with the vibration of vibrating shaft 1, the magnetic circuit part intrinsic inductance B moment be made up of arc magnetic shoe permanent magnet 22-24 and yoke changes, according to Faraday's electromagnetic induction law, when magnetic induction density B changes, in coil, produce induced electromotive force.
Embodiment 1
The present embodiment adopts above-mentioned connected mode, and upper end cover and bottom end cover are the cuboid plate of edge with square indentations, and the groove of upper and lower end cap is in order to embed four side plates.Vibrating shaft part: select cylindrical austenitic stainless steel (non-magnet material) as vibrating shaft 1, avoid affecting magnetic circuit.Vibrating shaft total length 890mm, two ends diameter is 25mm, the installation length of the bonding mover silicon steel sheet part in middle part is 150mm, ring footpath 10mm, and surrounding evenly has four dark 5mm mover silicon steel sheet grooves 26 that radian is 60 °, the vibration axial length 370mm of mover silicon steel sheet 21 upper end, the vibration axial length 370mm of mover silicon steel sheet lower end.Each mover silicon steel sheet groove 26 respectively places the arc magnetic shoe permanent magnet (22-24) of three pieces of longitudinal arrangements, and the internal diameter of every block arc magnetic shoe permanent magnet is 17.5mm, and external diameter is 37.5mm, and height is 50mm, and radian is 60 °; N, S pole out-phase arrangement successively of three pieces of arc magnetic shoe permanent magnets, these three pieces of arc magnetic shoe permanent magnet centers are relative with three pole shoe centers of pole shoe yoke 5 respectively.Polarity and the arrangement mode of the arc magnetic shoe permanent magnet in four mover silicon steel sheet groove grooves are identical.Vibrating shaft end has square keyway 25, and be fixed on by flat key 12 in square keyway 25, object prevents generator in vibration processes, and vibrating shaft deflects.
Fig. 1 is the installation diagram of low frequency permanent magnetic vibration generator.During test, External Force Acting in vibrating shaft 1 upper surface, vibrating shaft end and spring contact, Compress Spring.For preventing vibrating shaft 1 from deflecting in vibration processes, have the square keyway 25 of 3.5 × 4 × 8mm at vibrating shaft end, square keyway built-in enter 4 × 4 × 8mm flat key, flat key placed-depth is that 2mm realizes tightly connecting with vibrating shaft.Hollow cylindrical hub 7 is of a size of 26mm × 60mm × 300mm, and hub inwall has 4.5 × 1.5 × 300mm square groove 13, and realize pine with flat key and connect, this propeller boss fit structure makes generator can not deflect in vibration processes.Yoke on four blocks of side plates 11 is pole shoe structure, pole shoe yoke and side plate coupling part are electrode seat 16, electrode seat is equidistantly distributed with three pole shoes, pole shoe comprises pole tip 3 and pole body 14, pole body is connected with pole tip, each pole body is wound with coil, each pole tip 3 is made up of rectangular segment and isosceles trapezoid part, the isosceles trapezoid part of pole tip 3 is between pole body 14 and the rectangular segment of pole tip, pole tip rectangular segment, isosceles trapezoid part and pole body 14 form a pole shoe jointly, the wherein long 40mm of pole body, wide 20mm, the long 46mm of rectangular segment of pole tip, wide 2mm, isosceles trapezoid part water table opening is wide identical with pole body 14, for 20mm, the appearance of base square and pole tip 3 rectangular segment is same, for 46mm, the height of isosceles trapezoid part is 5mm.Three pole shoes are to each other apart from 4mm.With seccotine by identical for shape specification 100 silicon steel sheet vertical stackings and together with being adhesively fixed with side plate.Pole shoe yoke on arc magnetic shoe permanent magnet in arc magnetic shoe permanent magnet 22-24 in the process on Generator Vibration axle and other three mover silicon steel sheet groove grooves and actionless pole shoe yoke 5 and other three side plates of generator produces relative motion, magnetic induction density B on three of yoke inside pole bodies is caused to change, pole shoe yoke pole body is tied with coil, according to Faraday's electromagnetic induction law, coil can produce induced electromotive force, the voltage waveform (see Fig. 5) of lead-out wires of coil on each side plate that emulation obtains.Vibrating shaft 1 lower end is through lower flange bearing 6, end flat key 12 is made to aim at square groove 13, vibrating shaft slips in hollow cylindrical hub 7 along square groove and connects with hub inner spring 8, and vibrating shaft upper end exceeds upper flange bearing 4 and upper end cover 2, and prestressing force can be loaded into vibrating shaft upper end surface.
Embodiment 2
In the present embodiment, vibrating shaft 1 is 25mm cylinder stainless steel, middle part silicon steel sheet sunk part is provided with arc magnetic shoe Nd-Fe-B permanent magnet 22-24 (Nd2Fe14B, model is N45), three pieces of permanent magnets are longitudinally close together, polarity is contrary successively, one week totally four groups, end has the square keyway 25 of 3.5 × 4 × 8mm.
Consider there is stronger attraction between permanent magnetism and yoke, therefore the round flange linear bearing (upper flange bearing 4 and lower flange bearing 6) being distributed in two ends is used to carry out spacing to vibrating shaft, gravitation between permanent magnet and yoke is converted into the force of rolling friction between vibrating shaft and bearing, significantly cuts down magneticaction to the impact of Generator Vibration.
The output EMF waveform figure that Fig. 5 is vibration frequency is 1.25Hz, amplitude is vibrating electricity generator under 150mm condition.In figure, abscissa T represents the time, and unit is second, and ordinate U represents output voltage, and unit is volt.The induced electromotive force peak value of the lead-out wires of coil as shown in Figure 5 on the single side plate of vibrating electricity generator is 30V, have compared with the permanent magnetic vibration generator being a few volt with currently marketed peak value and comparatively significantly promoted, its main cause is: 1, generator have employed the yoke of pole shoe structure, good linear distribution magnetic field can be obtained, reduce air-gap reluctance, improve main pole Distribution of Magnetic Field; 2, coil winding is in pole body part, and the magnetic flux that this part is passed through is yoke the best part; 3, between permanent magnet and yoke, air gap diminishes, and decreases leakage field, improves magnetic field utilance; 4, generator have employed closed four-prism structure, makes generator utilize magnetic field to produce induced electromotive force at four sides, space, improves the utilization ratio in magnetic field and space; Simultaneously because generator is four-prism structure, the permanent magnet of middle vibrating shaft four side corresponds respectively to the yoke on four side plates, thus concerning vibrating shaft, each party is to the power equal and opposite in direction be subject to, then the four direction that is subject to of vibrating shaft to make a concerted effort be 0, thus act on the active force of vibrating shaft when reducing vibration, on one-sided plate, lead-out wires of coil peak value is 30V, generator has four side plates, and the electric energy of four lead-out wires of coil outputs is larger; 5, this generator can apply to the occasion that peak swing is 150mm, improves the operation strategies of generator.Experiment shows, the vibrating electricity generator of development is provided with comparatively considerable output voltage at low frequency.
Embodiment 3
The present embodiment adopts above-mentioned connected mode, and upper end cover is closely fixedly connected with by the mortise structure matched each other with four side plates with bottom end cover.This generator is 1-5Hz in vibration frequency, can export larger output voltage when vibration displacement peak value is 100-200mm.
The utility model unaccomplished matter is known technology.
Claims (4)
1. a low frequency permanent magnetic vibration generator, it is characterized in that, the agent structure of this generator is four-prism, comprise four side plates, upper end cover and bottom end covers, four side plates are all fixedly connected with bottom end cover with upper end cover, upper end cover central aperture, hollow cylindrical hub is installed on bottom end cover top, and hub inner bottom part hollow parts places spring; Hub top is installed and the lower flange bearing of vibrating shaft same inner diameter, and lower flange bearing is connected and fixed by bolt and hollow cylindrical hub top, and lower flange bearing is passed in hub and spring contact in the bottom of vibrating shaft; The upper end of vibrating shaft through upper flange bearing and the upper end cover that is fixed together with it, and exceeds upper end cover;
Described vibrating shaft is the symmetrical column structure that middle part is bonded with mover silicon steel sheet, and mover silicon steel sheet part is circumferentially evenly distributed with four grooves, is embedded with three pieces of arc magnetic shoe permanent magnets be close together in each mover silicon steel sheet groove from top to bottom; Three pieces of adjacent different arrangements of arc magnetic shoe permanent magnet polarity in each mover silicon steel sheet groove groove; Polarity and the arrangement mode of the arc magnetic shoe permanent magnet in four mover silicon steel sheet groove grooves are identical;
All be provided with at the middle part of each side plate by the pole shoe yoke of some identical silicon steel sheet vertical stackings of shape specification, each pole shoe yoke comprises three pole shoes, four mover silicon steel sheet grooves of the mover silicon steel sheet part in the middle part of vibrating shaft are right against the pole shoe yoke in respective side panels respectively, align with the upper and lower end face of side plate pole shoe yoke respectively in mover silicon steel sheet upper and lower end face in the middle part of vibrating shaft, and outside arc magnetic shoe permanent magnet on the outside pole shoe end face part of each pole shoe yoke and vibrating shaft between leave equidistant air gap respectively; The pole body of each pole shoe is tied with coil, the coiler part head and the tail adjacent coupled in series successively on three pole bodies of each yoke, each like this pole shoe yoke draws two lead-out wires of coil altogether; Each side plate leaves side plate through-hole to draw lead-out wires of coil.
2. low frequency permanent magnetic vibration generator according to claim 1, is characterized in that, described upper end cover and bottom end cover are the cuboid plate of edge with square indentations, and the groove of upper and lower end cap is in order to embed four side plates.
3. low frequency permanent magnetic vibration generator according to claim 1, it is characterized in that, described hollow cylindrical hub inwall has square groove, and vibrating shaft bottom has square keyway, square keyway is connected by flat key with the square groove of hub inwall, vibrating shaft and hollow cylindrical hub is fixed.
4. low frequency permanent magnetic vibration generator according to claim 1, is characterized in that, described pole shoe yoke is formed by the 100-200 sheet silicon steel sheet vertical stacking that shape specification is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220164.5U CN204538936U (en) | 2015-04-12 | 2015-04-12 | A kind of low frequency permanent magnetic vibration generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520220164.5U CN204538936U (en) | 2015-04-12 | 2015-04-12 | A kind of low frequency permanent magnetic vibration generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734453A (en) * | 2015-04-12 | 2015-06-24 | 河北工业大学 | Low-frequency permanent magnet vibration generator |
| CN105591516A (en) * | 2015-09-18 | 2016-05-18 | 王宁宁 | Spontaneous power generation device based on vibration mechanical energy |
-
2015
- 2015-04-12 CN CN201520220164.5U patent/CN204538936U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734453A (en) * | 2015-04-12 | 2015-06-24 | 河北工业大学 | Low-frequency permanent magnet vibration generator |
| CN105591516A (en) * | 2015-09-18 | 2016-05-18 | 王宁宁 | Spontaneous power generation device based on vibration mechanical energy |
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