CN105958868B - A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator - Google Patents
A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator Download PDFInfo
- Publication number
- CN105958868B CN105958868B CN201610459911.XA CN201610459911A CN105958868B CN 105958868 B CN105958868 B CN 105958868B CN 201610459911 A CN201610459911 A CN 201610459911A CN 105958868 B CN105958868 B CN 105958868B
- Authority
- CN
- China
- Prior art keywords
- runner
- end cap
- piezoelectric
- driver
- piezoelectric vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000002964 excitative effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004441 surface measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Abstract
Rotary-type piezoelectric beam energy accumulator is suspended the present invention relates to a kind of shaft end, belongs to field of piezoelectric generation.The runner left and right sides is respectively provided with left and right end cap, the metal substrate provided with cantilever beam is all crimped between left and right end cap and runner side wall, metal cantilever beams constitute piezoelectric vibrator be bonded piezoelectric chip, piezoelectric vibrator free end is equipped with excited magnet, and excited magnet is installed and is placed in the rectangle guide groove of runner side close to runner；The cantilevered axle of gear is placed in roller centre hole and end is connected with right end cap；Cantilevered axle constitutes the cylindrical driver that nonferromugnetic material is provided with slideway, slideway with the ring cavity on runner, and driver two ends are inlaid with exciting magnet.Advantage characteristic：It is small without rotatory force suffered by fixed support, simple in construction and driver；Piezoelectric vibrator it is rational in infrastructure and deformation after each point stress it is identical, generated energy is big, reliability is high, effective band is wide；Cantilever shaft gear and the coaxial occasion of multi-gear can be used for as standarized component.
Description
Technical field
The invention belongs to new energy and technical field of power generation, and in particular to a kind of shaft end suspends rotary-type piezoelectric beam prisoner energy
Device, the health monitoring systems for wind power gear axle box bearing, axle and gear etc. are powered.
Background technology
Gear-box is the critical component of wind power generating set, and its function is transmission power.When wind-driven generator runs well,
The rotating speed of wind wheel is relatively low, cause generator efficiency relatively low, therefore generating capacity and efficiency need to be improved by gear-box speedup.Due to
Wind turbine gearbox is operated under speed change varying load environment, therefore is easily broken down；In addition, maintenance is tired during wind turbine gearbox failure
Difficult and cost is high, and wind turbine gearbox operation and maintenance cost may be up to the 30% of overall operation cost.Therefore, there has been proposed
The gear-box real-time monitoring system for state and method of diversified forms, to obtain each relevant parameter of gear-box in real time, send out in time
Now and problem is solved, so as to reduce device damage degree and maintenance cost.At present, the key element of wind turbine gearbox monitoring includes tooth
All many-sides such as load, vibration and the temperature of moving component such as wheel, bearing and wheel shaft.
For the monitoring of gear and axle, preferable method is that all kinds of sensing and monitoring systems are arranged on gear or axle
Or installed close to gear or axle, so as to realize the direct-on-line monitoring of its running status；But this monitoring scheme is because that can not be biography
Feel monitoring system reliable, sufficient supply of electric power is provided and popularization and application are difficult to, reason is：1. gear and axle are in rotation
Motion state, it is impossible to pass through cable power supply；2. as powered using battery, need to often it be changed because battery is limited, when
Battery electric quantity is not enough and will be unable to realize effective monitoring when not changing in time；3. cantilevered axle and its end tooth away from bearing block
When wheel and multiple gears are coaxial, all microminiature can not be constructed by relative motion between swing pinion or axle and fixed support and generated electricity
Machine.It is limited to the monitoring system energy supply problem of wind turbine gearbox gear and axle, can not also realizes real meaning in practice at present
On real time on-line monitoring.
The content of the invention
The problems of in terms of being powered for wind turbine gearbox monitoring system, the present invention proposes a kind of shaft end suspension runner
Formula piezoelectric beam energy accumulator.The embodiment that the present invention is used is：The runner left and right sides is separately installed with left end cap and right end cap, left
The cantilever beam and be bonded piezoelectric chip structure on metal substrate, metal substrate are all crimped between end cap and right end cap and runner side wall
Into piezoelectric vibrator, piezoelectric vibrator free end is provided with excited magnet, and excited magnet is installed close to runner and is placed in runner side
In rectangle guide groove；The cantilevered axle of connector is placed in roller centre hole and end is connected with right end cap；In cantilevered axle and runner
Sealing ring is provided between heart hole, cantilevered axle constitutes with the ring cavity on runner and lubricating oil is filled with slideway, slideway, is provided with non-ferric
The cylindrical driver of magnetic material, driver two ends are inlaid with exciting magnet；When runner side piezoelectric vibrator and driver
When quantity is both greater than 1, angle and two adjacent actuators centers between the symmetrical center line of two adjacent piezoelectric vibrators are turned round with runner
Angle between the line of centres can not integral multiple each other, the pole configuration of the adjacent exciting magnet in driver the same side two is in opposite direction,
The pole configuration direction of two adjacent excited magnet magnetic is identical；The runner left and right sides and its adjacent left end cap and right end cap side are all set
There are shape, yardstick and quantity identical confined planes and deep gouge；Deep gouge is used to accommodate piezoelectric chip, and its planar dimension is more than piezo crystals
Piece, less than metal cantilever beams；Confined planes are used for the deflection for limiting piezoelectric vibrator, and confined planes are arc surface and its rational curvature
Radius depends on the material and thickness of metal substrate and piezoelectric chip.
In the present invention, for improve piezoelectric vibrator generating capacity and reliability, piezoelectric chip for 0.2~0.3mm PZT4,
Metal substrate is beryllium-bronze, and the ratio between thickness of metal substrate and piezoelectric chip scope is 1~2.5, the now generating of piezoelectric vibrator
Ability is larger compared with strong, energy ratio；Energy ratio refers to the electric energy produced by the piezoelectric vibrator first order buckling deformation of variant thickness ratio
It is larger with the ratio between maximum therein；The piezoelectric vibrator constituted for the present invention using PZT4 and beryllium-bronze substrate, confined planes
Rationally radius of curvature isWherein α=hm/hpFor thickness ratio, hmAnd hpRespectively
For metal substrate and the thickness of piezoelectric chip.
In the course of work, the cantilevered axle of connector drives runner, left end cap and right end cap, piezoelectric vibrator and excited magnet to turn
It is dynamic；In runner rotation process, driver is in slide bottom in the presence of its inertia force, so that driver and by excitatory
Relative motion is produced between iron.When piezoelectric vibrator and excited magnet are gone to it is close with exciting magnet when, excited magnet with excitation magnetic
Axial force between iron gradually increases, and piezoelectric vibrator produces axial bending deformation；When the center of excited magnet and exciting magnet
Exciting force when overlapping suffered by piezoelectric vibrator is maximum, and metal cantilever beams will abut in limit completely when the deflection of piezoelectric vibrator is maximum
On plane；Hereafter, the deflection of piezoelectric vibrator is gradually reduced with the further rotation of runner and is gradually brought to initial shape
State；Be gradually distance from after above-mentioned excited magnet and exciting magnet are close to each other again during, piezoelectric vibrator, which is completed, once to generate electricity
Process.
Advantage and characteristic：The present invention realizes the relative motion between runner using the inertia force of driver and encourages piezoelectricity to shake
Sub- axial bending is small without rotatory force suffered by the fixed support in the external world, simple in construction and driver；Piezoelectric vibrator deflection is by spacing
Each point stress is identical after radius surface determination, deformation, therefore generated energy is big, reliability is high, effective band is wide；It can be used as standarized component
In cantilever shaft gear and the coaxial occasion of multi-gear, the gear on-line monitoring of real meaning is realized.
Brief description of the drawings
Fig. 1 is the structural representation of energy accumulator in a preferred embodiment of the present invention；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is the structural representation of runner in a preferred embodiment of the present invention；
Fig. 4 is Fig. 3 left view；
Fig. 5 is the structural representation of right end cap in a preferred embodiment of the present invention；
Fig. 6 is Fig. 5 left view；
Fig. 7 is piezoelectric vibrator and the structural representation after excited magnet assembling in a preferred embodiment of the present invention；
Fig. 8 is the ratio between piezoelectric vibrator generated energy and thickness ratio relation curve in a preferred embodiment of the present invention.
Embodiment
The runner a left and right sides is provided with left end cap b and right end cap c by screw respectively, left end cap b and right end cap c with
The cantilever beam h11 and be bonded piezoelectric chip h2 structures on metal substrate h1, metal substrate h1 are all crimped between runner a side wall
Into piezoelectric vibrator h, piezoelectric vibrator h free ends are provided with excited magnet g through screw, and excited magnet g is installed and is placed in close to runner a
In the rectangle guide groove a1 of runner a sides；Connector e cantilevered axle f be placed in runner a centre bore a2 and end through screw with
Right end cap c connections；Provided with the ring cavity a3 on sealing ring o, cantilevered axle f and runner a between cantilevered axle f and runner a centre bore a2
Constitute and lubricating oil is filled with slideway D, slideway D, the cylindrical driver d of nonferromugnetic material, driver d two ends are installed
It is inlaid with exciting magnet i；When runner a sides piezoelectric vibrator h and driver d quantity is both greater than 1, two adjacent piezoelectric vibrator h
Symmetrical center line between angle Q1 and angle Q2 between two adjacent actuators d centers and runner a centre of gyration lines can not be mutual
For integral multiple, the adjacent exciting magnet i in driver d the same sides two pole configuration is in opposite direction, two adjacent excited magnet magnetic g pole
Configure direction identical；The runner a left and right sides and its adjacent left end cap b and right end cap c side be designed with shape, yardstick and
Quantity identical confined planes M and deep gouge C；Deep gouge C is used to accommodate piezoelectric chip h2, and its planar dimension is more than piezoelectric chip h2, small
In metal cantilever beams h11；Confined planes M is used for the deflection for limiting piezoelectric vibrator h, and confined planes M is arc surface and it is rational bent
Rate radius depends on metal substrate h1 and piezoelectric chip h2 material and thickness.
In the present invention, to improve piezoelectric vibrator h generating capacity and reliability, piezoelectric chip is 0.2~0.3mm's
PZT4, metal substrate are beryllium-bronze, and the ratio between metal substrate h1 and piezoelectric chip h2 thickness scope is 1~2.5, and now piezoelectricity shakes
Sub- h generating capacity is larger compared with strong, energy ratio；Energy ratio refers to the piezoelectric vibrator h first order bucklings deformation institute of variant thickness ratio
The electric energy of generation and the ratio between maximum therein are larger；Shaken for the piezoelectricity that the present invention is constituted using PZT4 and beryllium-bronze substrate
Son, confined planes M reasonable radius of curvature isWherein α=hm/hpFor thickness
Than hmAnd hpRespectively metal substrate h1 and piezoelectric chip h2 thickness.
In the course of work, connector e cantilevered axle f drives runner a, left end cap b, right end cap c, piezoelectric vibrator h and is excited
Magnet g is rotated；In runner a rotation processes, driver d is in slideway D bottom in the presence of its inertia force, so that swashing
Encourage and produce relative motion between device d and excited magnet g.When piezoelectric vibrator h and excited magnet g are gone to it is close with exciting magnet i when,
Axial force between excited magnet g and exciting magnet i gradually increases, and piezoelectric vibrator h produces axial bending deformation；When by excitatory
Exciting force when iron g is overlapping with exciting magnet i center suffered by piezoelectric vibrator h is maximum, gold when piezoelectric vibrator h deflection is maximum
Category cantilever beam h11 will be abutted on confined planes M completely；Hereafter, piezoelectric vibrator h deflection is with runner a further rotation
And be gradually reduced and be gradually brought to original state；It is gradually distance from again after above-mentioned excited magnet g and exciting magnet i is close to each other
During, piezoelectric vibrator h completes a power generation process.
Obviously, the present invention realizes the relative motion between runner a using driver d inertia force and encourages piezoelectric vibrator h
Axial bending is small without rotatory force suffered by the fixed support in the external world, simple in construction and driver；Piezoelectric vibrator h deflection is by limiting
Plane M radius is determined, each point stress is identical after deformation, therefore generated energy is big, reliability is high, effective band is wide；Available for cantilever
Shaft gear and the coaxial occasion of multi-gear, realize the gear of real meaning and the on-line monitoring of shafting.
Claims (1)
1. a kind of shaft end suspends rotary-type piezoelectric beam energy accumulator, it is characterised in that：The runner left and right sides be respectively provided with left end cap and
All it is crimped with the metal substrate provided with cantilever beam, metal substrate between right end cap, left end cap and right end cap and runner side wall
Cantilever beam constitutes piezoelectric vibrator be bonded piezoelectric chip, and piezoelectric vibrator free end is equipped with excited magnet, and excited magnet is close
Runner is installed and is placed in the rectangle guide groove of runner side；The cantilevered axle of connector is placed in roller centre hole and end and the right side
End cap is connected；Sealing ring is provided between cantilevered axle and roller centre hole, cantilevered axle is constituted in slideway, slideway with the ring cavity on runner
Filled with lubricating oil, the cylindrical driver of nonferromugnetic material is installed, driver two ends are inlaid with exciting magnet；Work as runner
When the quantity of side piezoelectric vibrator and driver is both greater than 1, the angle and two between two adjacent piezoelectric vibrator symmetrical center lines are adjacent
Angle between driver center and runner centre of gyration line can not integral multiple, the adjacent exciting magnet in driver the same side two each other
Pole configuration is in opposite direction, the pole configuration direction of excited magnet is identical on two adjacent piezoelectric vibrators；The runner left and right sides and
The side of its adjacent left end cap and right end cap is designed with shape, yardstick and quantity identical confined planes and deep gouge；Deep gouge plane
Size is more than piezoelectric chip, less than the cantilever beam on metal substrate；PZT4 that piezoelectric chip is 0.2~0.3mm, metal substrate are
The ratio between the thickness of beryllium-bronze, metal substrate and piezoelectric chip scope is 1~2.5；The reasonable radius of curvature of confined planes isWherein α=hm/hpFor thickness ratio, hmAnd hpRespectively metal substrate and pressure
The thickness of electric chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459911.XA CN105958868B (en) | 2016-06-15 | 2016-06-15 | A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459911.XA CN105958868B (en) | 2016-06-15 | 2016-06-15 | A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105958868A CN105958868A (en) | 2016-09-21 |
| CN105958868B true CN105958868B (en) | 2017-10-10 |
Family
ID=56903825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459911.XA Active CN105958868B (en) | 2016-06-15 | 2016-06-15 | A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958868B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395059B (en) * | 2017-08-17 | 2023-10-13 | 浙江师范大学 | Wind-driven vibration energy harvester |
| CN107395061B (en) * | 2017-08-17 | 2023-05-16 | 浙江师范大学 | Wind-induced piezoelectric energy harvester |
| CN107769613B (en) * | 2017-10-31 | 2019-08-27 | 长春工业大学 | A kind of rotary magnetic force multi-modal based on monostable-stirs piezoelectric harvester |
| CN107592031B (en) * | 2017-10-31 | 2019-05-10 | 长春工业大学 | Non-linear broadband piezoelectric energy harvesting device towards tire pressure monitoring sensor energy supply |
| CN112181178B (en) * | 2020-10-04 | 2022-06-17 | 长春工业大学 | Wireless mouse device with self-energy supply system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259452B (en) * | 2013-05-31 | 2015-06-10 | 浙江师范大学 | Shaft-end overhung piezoelectric cantilever beam electric generator |
| CN103259453B (en) * | 2013-05-31 | 2015-04-29 | 浙江师范大学 | Piezoelectric cantilever beam generator for wind driven generator blade monitoring system |
| CN103248269B (en) * | 2013-05-31 | 2015-04-29 | 浙江师范大学 | Wheel-type piezoelectric beam generator based on clamping limit |
| CN103269181B (en) * | 2013-05-31 | 2015-12-09 | 浙江师范大学 | A kind of suspending hammer self-excitation wheel-type electric generator |
| CN103269182B (en) * | 2013-05-31 | 2015-12-09 | 浙江师范大学 | Based on the hanging type rotary generator that piezoelectric cantilever mutual swashs |
| CN103259454B (en) * | 2013-05-31 | 2015-09-09 | 浙江师范大学 | Blade of wind-driven generator monitoring system generating device with round piezoelectric vibrators |
| CN104485850B (en) * | 2015-01-07 | 2017-01-25 | 浙江师范大学 | Piezoelectric generator excited by human motion |
-
2016
- 2016-06-15 CN CN201610459911.XA patent/CN105958868B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105958868A (en) | 2016-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105958868B (en) | A kind of shaft end suspends rotary-type piezoelectric beam energy accumulator | |
| CN105932907B (en) | A kind of wind turbine gearbox monitoring encourages piezoelectric harvester with eddy flow | |
| CN106014887B (en) | A kind of suspension self-excitation runner piezoelectric beam energy accumulator | |
| CN105958867B (en) | A kind of auto-excitation type pipeline fluid piezoelectric harvester | |
| CN102790550B (en) | Power generation device following up spindle of propeller | |
| CN102801358B (en) | Bi-directionally magnetically coupled and axially excited and limited rotating-shaft piezoelectric generator | |
| CN103986370A (en) | High-speed cylindrical roller bearing and integrated monitoring device thereof | |
| CN106100444B (en) | A kind of piezo fluid generator | |
| CN106059391B (en) | A kind of piezoelectric beam energy accumulator powered for wind turbine gearbox monitoring system | |
| CN202721624U (en) | Bidirectional magnetic force coupling axial excitation and limit type rotating shaft type piezoelectric generator | |
| CN106452175B (en) | A kind of circular piezoelectric vibrator generator for the power supply of wind turbine gearbox monitoring system | |
| CN103312215A (en) | Shaft end overhanging-type piezoelectric beam generator based on clamp limit | |
| CN205744317U (en) | A kind of suspension self-excitation runner piezoelectric beam energy accumulator | |
| CN106130400A (en) | A kind of scroll actuation circular piezoelectric vibrator energy accumulator | |
| CN202721626U (en) | Rotating disc type piezoelectric generator based on magnetic force coupling axial excitation | |
| CN103994144A (en) | High speed cylindrical roller bearing with self-generating monitoring device | |
| CN106411176B (en) | A kind of runner auto-excitation type circular piezoelectric vibrator generator | |
| CN203856889U (en) | Self-sensing tapered roller bearing of wind-driven generator | |
| CN107565849A (en) | A kind of new high ferro rotor string monitoring device | |
| CN205921540U (en) | Axle head suspension wheel style piezoelectricity roof beam energy accumulator | |
| CN109687767B (en) | Frequency-adjustable magnetic excitation rotating piezoelectric generator | |
| CN205792303U (en) | A kind of piezoelectric beam energy accumulator for wind turbine gearbox monitoring system power supply | |
| CN107332467A (en) | A kind of self-excited vibration generator for oil-gas pipeline monitoring system | |
| CN205681340U (en) | A kind of scroll actuation circular piezoelectric vibrator energy accumulator | |
| CN207234695U (en) | A kind of rotary piezoelectric energy accumulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190815 Address after: 213164 North Building of Huiyan Building, No. 18 Changwuzhong Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 321004 Zhejiang province Jinhua City Yingbin Road No. 688, Zhejiang Normal University Patentee before: Zhejiang Normal University |
|
| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 213164 room 2521, North Tower, Hui Yan building, Changzhou science and Education Town, 18 Wujin Road, Wujin, Changzhou. Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 213164 North Building of Huiyan Building, No. 18 Changwuzhong Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Changzhou angde Industrial Equipment Technology Co. Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213164 North Building 2523, Huiyan building, Changzhou science and Education City, No. 18, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 213164 room 2521, North Tower, Hui Yan building, Changzhou science and Education Town, 18 Wujin Road, Wujin, Changzhou. Patentee before: Changzhou angde Industrial Equipment Technology Co. Ltd. |
|
| CP02 | Change in the address of a patent holder |