CN107465362A - A kind of symmetrical lever wind energy trap setting - Google Patents

A kind of symmetrical lever wind energy trap setting Download PDF

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Publication number
CN107465362A
CN107465362A CN201710862289.1A CN201710862289A CN107465362A CN 107465362 A CN107465362 A CN 107465362A CN 201710862289 A CN201710862289 A CN 201710862289A CN 107465362 A CN107465362 A CN 107465362A
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CN
China
Prior art keywords
lever
wind energy
driver plate
trap setting
rotating shaft
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CN201710862289.1A
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Chinese (zh)
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CN107465362B (en
Inventor
曹东兴
高彦辉
汪涛
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北京工业大学
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Priority to CN201710862289.1A priority Critical patent/CN107465362B/en
Publication of CN107465362A publication Critical patent/CN107465362A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezo-electric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/186Vibration harvesters

Abstract

The invention discloses a kind of symmetrical lever wind energy trap setting, the device is made up of tail vane, pylon, base, bearing block, support, wind wheel, rotating shaft, driver plate, shifting block, lever, spring and piezoelectric cantilever.The number of shifting block is three and is arranged circumferentially along driver plate that shifting block both sides are respectively symmetrically connected by a spring with driver plate;Lever is arranged symmetrically in rotating shaft both sides, and the length of lever moving arm is less than the length of resistance arm;A series of length different in width mechanical periodicity multistage ladder piezoelectric cantilevers and triangle piezoelectric cantilever are arranged on lever.Under wind-force effect, blade driving driver plate continuously rotates, and the shifting lever of the shifting block interval on driver plate, lever makees reciprocally swinging vibration near the equilbrium position of spring, and then each piezoelectric cantilever on lever produces significantly oscillation crosswise, produces electric energy.The present invention can be simple and easy to spread using the low-frequency vibration under low wind speed environments, vibration bandwidth, wind collecting efficiency high, mechanical structure.

Description

A kind of symmetrical lever wind energy trap setting

Technical field

The present invention relates to a kind of wind energy trap setting, and in particular to a kind of symmetrical lever wind energy trap setting, belongs to wind Power generating new energy field.

Background technology

In recent years, environmental pollution and energy shortage turn into an important problem of puzzlement countries in the world, thus caused ring Border deteriorates and energy crisis also begins to influence socio-economic development and the production and living of people.And utilize wind power generation green ring Guarantor, reserves are big, cheap, have good development prospect.Wind-power electricity generation is all to drive generator using blade mostly at present Generated electricity, it is present, and volume is big, and complicated, production cost is high, and energy conversion efficiency is more low scarce during small volume Point.Electric energy is produced because most of wind-driven generators are all based on electromagnetic induction principle, it is therefore desirable to seeks another energy conversion Form is used on wind power generation plant.

The power source of existing many TRTs uses wind energy now, using the direct piezoelectric effect of piezoelectric by vibration Mechanical energy is converted into electric energy.But current wind power piezoelectric generation device can not preferably utilize wind energy and vibrational energy, generated energy Small, energy conversion efficiency is low, complicated in mechanical structure.The A patents of invention of Publication No. CN 104426423 disclose a kind of energy and received Acquisition means and collection method, it is rotated using wind energy drive shaft, the periodically impact cantilever beam of the projection on axle, so as to cause to hang Arm beam periodically vibrates so that the piezoelectric patches deformation on cantilever beam produces electric energy.But the speed of the Nature apoplexy is continuous Change, therefore the invention, in the environment of low wind speed, cantilever beam is not likely to produce vibration, piezoelectric patches can not produce more energy. And the invention cantilever beam number is limited, although vibration frequency is adjustable, can not produce wideband effect.Publication No. CN 106050572 A patent of invention discloses a kind of broadband wind-induced vibration piezoelectric energy collector, and the invention passes through fan belt Dynamic planetary gear train speedup, then by cam disc by the linear motion of rotary motion slide bar, and then the vibration of piezoelectric cantilever group is driven, Produce electric energy.The invention can utilize the relatively low wind energy of speed, also widen vibration frequency band, but the gearratio mistake of planetary gear train When big, the requirement of the staring torque of the transmission device is big, thus when wind speed is too low the TRT generate electricity it is invalid.Its other structure is answered Miscellaneous, planetary gear train manufacture requires higher with installation accuracy, and production cost is higher.

This patent overcomes above patent shortcoming, is directed to proposing that one kind is applied to broadband, energy conversion efficiency height and machine Tool wind energy trap setting simple in construction.

The content of the invention

The purpose of the present invention is to propose to a kind of low-frequency vibration that can be utilized under low wind speed environments, frequency band is widened, improves energy Measure conversion efficiency and simple, the easy to spread wind energy trap setting of mechanical structure.

To achieve the above object, the technical solution adopted by the present invention is a kind of symmetrical lever wind energy trap setting, including Pylon, base is installed on pylon, bearing block, support, big spring and tail vane are fixed with base.Rotating shaft passes through rolling bearing B On bearing block, a wind wheel is housed on the spindle nose of rotating shaft one end, rotating shaft center section is equipped with driver plate, is equipped with and dials on driver plate Block.Fixing axle is installed, lever is arranged in fixing axle by rolling bearing A, and a series of piezoelectricity is arranged on lever on support Cantilever beam.The other end of big spring is arranged on lever.

Blade on wind wheel is converted to power source wind energy the mechanical movement that rotating shaft continuously rotates, and the driver plate in rotating shaft will be even Continuous rotary motion is converted to the motion of the shifting lever of interval, and lever shakes near the equilbrium position of big spring as reciprocally swinging Dynamic, under the reciprocally swinging vibration of lever significantly oscillation crosswise occurs for each piezoelectric cantilever on lever, and then hangs piezoelectricity Piezoelectric layer on arm beam deforms upon, and produces electric energy.The wind wheel of wind energy trap setting can be made windward by being swung with the wind by tail vane Face face direction of flow all the time.

Driver plate is connected in rotating shaft by interference fit.

The number of shifting block is three and is circumferentially evenly arranged that shifting block both sides respectively pass through a little spring and driver plate pair on driver plate Claim ground connection.

Lever is arranged symmetrically in rotating shaft both sides, and the length of lever moving arm is less than the length of resistance arm.

A series of length different in width mechanical periodicity multistage ladder piezoelectric cantilevers are arranged on three sides of lever resistance arm Beam and triangle piezoelectric cantilever.

Piezoelectric cantilever upper and lower surface lays electrode, and is connected to wire on piezoelectric layer and basal layer respectively, each piezoelectricity Wire on cantilever beam uses parallel way, and the positive and negative polarity wire of each piezoelectric cantilever finally is connected in parallel into energy storage again Cryopreservation device.

The material of piezoelectric cantilever basal layer is bronze or stainless steel.

The material of piezoelectric layer is piezoelectric ceramics or piezopolymer.

The elastic restoring force of big spring and little spring is appropriate.

Compared with prior art, the present invention has the advantages that:

1. the present invention uses the length of the power arm of lever to be less than the length of resistance arm, can make when wind speed is smaller Significant vibration occurs for lever, fully gathers low velocity wind energy in nature;

2. the shifting block number that the present invention is utilized is three, it can make to stagger and stir the lever on both sides, it is ensured that any time It can prevent that driver plate blocks motionless when wind speed is relatively low with shifting lever;The both sides of shifting block respectively pass through a little spring and driver plate pair Claim ground connection, impact can be reduced in shifting lever;

Exist 3. piezoelectric cantilever of the present invention is a series of length different in width mechanical periodicity multistage Stepped Beams and triangular beam Lever resistance end side surface arranges that this kind of piezoelectric cantilever energy density is high, has both widened vibration frequency band, increases output electricity again Energy;

4. mechanical structure of the present invention is simple, manufacturing cost is low, easy to spread.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of the present invention;

Fig. 2 is driver plate component structure diagram in the present invention;

Fig. 3 is that piezoelectric cantilever arranges schematic diagram in the present invention;

Fig. 4 is Piezoelectric Cantilever Beams schematic diagram in the present invention.

In figure:1- tail vanes, 2- levers, 3- fixing axles, 4- rolling bearings A, 5- rolling bearing B, 6- rotating shaft, 7- shifting blocks, 8- Driver plate, 9- bearing blocks, 10- supports, 11- piezoelectric cantilevers, 11.1- basal layers, 11.2- piezoelectric layers, 12- big springs, 13- bottoms Seat, 14- blades, 15- pylons, 16- block poking pins, 17- spring catch A, 18- little spring, 19- spring catch B, 20- wire.

Embodiment

In order to fully understand beneficial effects of the present invention, the present invention is done with reference to the accompanying drawings and detailed description into one Step is described in detail, and the embodiment is only used for explaining the present invention, and protection scope of the present invention is not formed and limited.

Embodiment:A kind of symmetrical lever wind energy trap setting, is formed such as shown in Figures 1 to 4, including pylon 15, tower Base 13 is installed on frame 15, bearing block 9, support 10, big spring 12 and tail vane 1 are fixed with base 13.Rotating shaft 6 passes through rolling Dynamic bearing B 5 is arranged on bearing block 9, a wind wheel is housed, the center section of rotating shaft 6 is equipped with driver plate on the spindle nose of the one end of rotating shaft 6 8, shifting block 7 is housed on driver plate 8.Fixing axle 3 is installed on support 10, lever 2 is arranged in fixing axle 3 by rolling bearing A4, A series of piezoelectric cantilever 11 is arranged on lever 2.The other end of big spring 12 is connected on lever.

This implementation driver plate 8 is connected in rotating shaft 6 by interference fit.

The number of shifting block 7 is three and to be circumferentially evenly arranged on this implementation driver plate 8, the one side of shifting block 7 with rotating disk 8 Block poking pin 16 be in clearance fit state, can be rotated around shifting block 16;On the other hand, both sides respectively pass through a little spring 18 Symmetrically it is connected with driver plate 8, the both ends of little spring 18 are connected with spring catch A17 and spring catch B19 respectively.

This implementation lever 2 is arranged symmetrically in the both sides of rotating shaft 6, and the length of the power arm of lever 2 is less than the length of resistance arm.

A series of length different in width mechanical periodicity multistage ranks are arranged on three sides of this implementation resistance arm of lever 2 Terraced piezoelectric cantilever and triangle piezoelectric cantilever.

This implementation upper and lower surface of the piezoelectric cantilever 11 laying electrode, and divide on piezoelectric layer 11.2 and basal layer 11.1 It is not connected to wire, the connection of the wire on each piezoelectric cantilever 11 uses parallel way, finally again by each piezoelectric cantilever Positive and negative polarity wire be connected in parallel to energy accumulating device.

The material of this implementation basal layer 11.1 of piezoelectric cantilever 11 for bronze or stainless steel, the material of piezoelectric layer 11.2 For piezoelectric ceramics or piezopolymer.

The elastic restoring force of this implementation big spring 12 and little spring 18 is appropriate.

In the present embodiment, power source wind energy is converted to the mechanical movement that rotating shaft 6 continuously rotates by the blade 14 on wind wheel, Driver plate 8 in rotating shaft 6 is converted to continuous rotary motion the motion of the shifting lever 2 of interval, and lever 2 is in big spring 12 Reciprocally swinging vibration is nearby made in equilbrium position, and each piezoelectric cantilever 11 on lever 2 issues in the reciprocally swinging vibration of lever 2 Raw significantly oscillation crosswise, and then deform upon the piezoelectric layer on piezoelectric cantilever 11, produces electric energy.Put with the wind by tail vane 1 The dynamic wind wheel windward side that can make wind energy trap setting face direction of flow all the time.

In summary, a kind of symmetrical lever wind energy trap setting of the present invention is compared with common wind energy trap setting, energy The low-frequency vibration under low wind speed environments is enough utilized, vibrates bandwidth, wind collecting efficiency high, mechanical structure is simple and is easy to push away Extensively.

This specific embodiment of the present invention embodiment is described above in association with accompanying drawing, but the present invention does not limit to In above-mentioned embodiment.Any any variation made within the thinking and principle of the present invention, replacement etc., are belonged to The claim protection category of the present invention.

Claims (8)

  1. A kind of 1. symmetrical lever wind energy trap setting, it is characterised in that:Including pylon, base is installed on pylon, on base Bearing block, support, big spring and tail vane are fixed with, rotating shaft is arranged on bearing block by rolling bearing B, the spindle nose of rotating shaft one end Upper that a wind wheel is housed, rotating shaft center section is equipped with driver plate, shifting block is housed on driver plate;Fixing axle is installed, lever leads on support Rolling bearing A is crossed in fixing axle, a series of piezoelectric cantilever is arranged on lever;The other end of big spring is arranged on thick stick On bar;
    Blade on wind wheel is converted to power source wind energy the mechanical movement that rotating shaft continuously rotates, and the shifting block in rotating shaft will be continuous Rotary motion is converted to the motion of the shifting lever of interval, and lever makees reciprocally swinging vibration near the equilbrium position of big spring, Under the reciprocally swinging vibration of lever significantly oscillation crosswise occurs for each piezoelectric cantilever on lever, and then makes piezoelectric cantilever On piezoelectric layer deform upon, produce electric energy;Being swung with the wind by tail vane can make the wind wheel windward side of wind energy trap setting begin Whole face direction of flow.
  2. A kind of 2. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Driver plate is matched somebody with somebody by interference Conjunction is connected in rotating shaft.
  3. A kind of 3. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Of shifting block on driver plate Number is three and is circumferentially evenly arranged that shifting block both sides are respectively symmetrically connected by a little spring with driver plate.
  4. A kind of 4. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Lever is arranged symmetrically in Rotating shaft both sides, the length of lever moving arm are less than the length of resistance arm.
  5. A kind of 5. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:The three of lever resistance arm A series of length different in width mechanical periodicity multistage ladder piezoelectric cantilevers and triangle piezoelectric cantilever are arranged on individual side.
  6. A kind of 6. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Above and below piezoelectric cantilever Electrode is laid on surface, and is connected to wire on piezoelectric layer and basal layer respectively, and the wire on each piezoelectric cantilever is using in parallel Mode, the positive and negative polarity wire of each piezoelectric cantilever is finally connected in parallel to energy accumulating device again.
  7. A kind of 7. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Piezoelectric cantilever basis The material of layer is bronze or stainless steel, and the material of piezoelectric layer is piezoelectric ceramics or piezopolymer.
  8. A kind of 8. symmetrical lever wind energy trap setting according to claim 1, it is characterised in that:Big spring and little spring Elastic restoring force it is appropriate.
CN201710862289.1A 2017-09-21 2017-09-21 A kind of symmetrical lever wind energy trap setting CN107465362B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109474203A (en) * 2018-11-17 2019-03-15 沈阳工业大学 Magnetostrictive thin film formula impacts the vibration collection and power generator that low frequency turns high frequency more

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
CN103956935A (en) * 2014-04-24 2014-07-30 南京航空航天大学 Piezoelectric power generation device and power generation method thereof
CN204041356U (en) * 2014-09-17 2014-12-24 扬州大学 Forced vibration formula wind generating unit
CN106050570A (en) * 2016-06-04 2016-10-26 上海大学 Wind energy collector based on flexible polymer piezoelectric material
CN106050572A (en) * 2016-07-16 2016-10-26 北京工业大学 Broadband wind-induced vibration piezoelectric energy collector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
CN103956935A (en) * 2014-04-24 2014-07-30 南京航空航天大学 Piezoelectric power generation device and power generation method thereof
CN204041356U (en) * 2014-09-17 2014-12-24 扬州大学 Forced vibration formula wind generating unit
CN106050570A (en) * 2016-06-04 2016-10-26 上海大学 Wind energy collector based on flexible polymer piezoelectric material
CN106050572A (en) * 2016-07-16 2016-10-26 北京工业大学 Broadband wind-induced vibration piezoelectric energy collector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109474203A (en) * 2018-11-17 2019-03-15 沈阳工业大学 Magnetostrictive thin film formula impacts the vibration collection and power generator that low frequency turns high frequency more

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