CN205744317U - A kind of suspension self-excitation runner piezoelectric beam energy accumulator - Google Patents
A kind of suspension self-excitation runner piezoelectric beam energy accumulator Download PDFInfo
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- CN205744317U CN205744317U CN201620625476.9U CN201620625476U CN205744317U CN 205744317 U CN205744317 U CN 205744317U CN 201620625476 U CN201620625476 U CN 201620625476U CN 205744317 U CN205744317 U CN 205744317U
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- end cap
- disk body
- piezoelectric vibrator
- activator
- side plate
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Abstract
This utility model relates to a kind of suspension self-excitation runner piezoelectric beam energy accumulator, belongs to field of piezoelectric generation.Left end cap, disk body, side plate and right end cap are sequentially connected and are enclosed within cantilevered axle；The cantilever beam of metal basal board and bonding piezoelectric chip constitute piezoelectric vibrator between left end cap with disk body and between side plate with right end cap, and piezoelectric vibrator is equipped with excited magnet；The slideway that cantilevered axle and disk body ring cavity are constituted, built with activator, is embedded with ball in activator, both sides are embedded with exciting magnet in outer rim；Activator both sides piezoelectric vibrator quantity is equal and is symmetrically installed；Side adjacent with piezoelectric vibrator on left end cap, disk body, side plate and right end cap is designed with shape yardstick and the identical confined planes of quantity and deep gouge.Advantage characteristic: little without rotatory force suffered by fixing support, simple in construction and activator；Piezoelectric vibrator rational in infrastructure and deformation after each point stress identical, generated energy is big, reliability is high, effective band width；Can be as building block for cantilevered axle gear and the coaxial occasion of multi-gear.
Description
Technical field
This utility model belongs to new forms of energy and technical field of power generation, is specifically related to a kind of suspension self-excitation runner piezoelectric beam prisoner's energy
Device, the health monitoring systems being relatively fixed support rotary structure for inconvenience installations such as gear of wind driven generator axles is 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 need to be by gear-box speedup to improve generating capacity and efficiency.Due to
Wind turbine gearbox is operated under speed change varying load environment, therefore easily breaks down；Additionally, maintenance is tired when wind turbine gearbox breaks down
Difficulty and cost are high, and wind turbine gearbox runs 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 of various ways and method, to obtaining each relevant parameter of gear-box in real time, sending out in time
Now and solve problem, thus reduce device damage degree and maintenance cost.At present, the key element of wind turbine gearbox monitoring includes tooth
All many-sides such as the load of moving component, vibration and temperature such as wheel, bearing and wheel shaft.
For the monitoring of gear and axle, preferable method is to be arranged on gear or axle by all kinds of sensing and monitoring systems
Or install near gear or axle, thus realize the direct-on-line monitoring of its running status；But this monitoring scheme is because being biography
Reliable, the sufficient supply of electric power that provides of sense monitoring system is difficult to popularization and application, and reason is: 1. gear and axle are in rotation
Kinestate, it is impossible to pass through cable power supply；2. as used battery to power, need to often change because battery is limited, when
Battery electric quantity is not enough and will be unable to realize effectively monitoring when changing the most in time；3. away from cantilevered axle and the end tooth thereof of bearing block
When wheel and multiple gear are coaxial, all cannot be sent out by relative motion structure microminiature between swing pinion or axle and securing supports
Motor.It is limited to the monitoring system energy supply problem of wind turbine gearbox gear, axle and bearing etc., current reality also cannot realize
Real time on-line monitoring truly.
Summary of the invention
For the problem existing for wind turbine gearbox monitoring system power supply aspect, the utility model proposes a kind of suspension self-excitation
Runner piezoelectric beam energy accumulator.This utility model adopted implementation scheme is that left end cap, disk body, side plate and right end cap pass sequentially through
Screw is connected, and left end cap, disk body and side plate are enclosed within the cantilevered axle of gear, and right end cap is connected with cantilevered axle；Cantilevered axle and dish
It is equipped with sealing ring between body and the center of side plate；Gold all it is crimped with between left end cap and disk body and between side plate and right end cap
Belonging to substrate, the cantilever beam on metal basal board constitutes piezoelectric vibrator with bonding piezoelectric chip；Piezoelectric vibrator free end is provided with
Excited magnet, excited magnet is installed near disk body or side plate and is placed in the rectangle guide groove of disk body side or side plate side；Outstanding
Arm axle and disk body ring cavity constitute slideway, be filled with lubricating oil, be provided with the activator of nonferromugnetic material, in activator in slideway
It is inlaid with the ball for Structure deformation in outer rim, is inlaid with exciting magnet to lateral symmetry；Activator both sides piezoelectric vibrator number
Measure equal and be symmetrically installed；When activator side piezoelectric vibrator and exciting magnet quantity are both greater than 1, two adjacent piezoelectric vibrators are symmetrical
Can not integral multiple each other between angle between the angle of centreline space and two adjacent exciting magnet centers and the disk body line of centres；Swash
The configuration direction, pole encouraging adjacent excited magnet magnetic on the circumference of device the same side two is identical, the opposite sex of the coaxial excited magnet in activator both sides
Magnetic pole is mounted opposite；On the circumference of activator the same side two, the pole configuration of adjacent actuators Magnet is in opposite direction, and activator both sides are same
The opposite pole of axle exciting magnet is mounted opposite, to guarantee that activator is not by responsive to axial force；Left end cap, disk body, side plate and the right side
Side adjacent with piezoelectric vibrator on end cap is designed with shape yardstick and the identical confined planes of quantity and deep gouge；Deep gouge is used for accommodating
Piezoelectric chip, its planar dimension is more than piezoelectric chip, less than metal cantilever beams；Confined planes is for limiting the deformation of piezoelectric vibrator
Amount, confined planes is arc surface and its rational radius of curvature depends on metal basal board and piezoelectric chip parameter.
In this utility model, for improving piezoelectric vibrator generating capacity and reliability, piezoelectric chip is 0.2～0.3mm
PZT4, metal basal board are beryllium-bronze, metal basal board is 1～2.5 with the ratio scope of the thickness of piezoelectric chip, now piezoelectric vibrator
Generating capacity compared with strong, energy comparison is big；Energy is more produced than the piezoelectric vibrator first order buckling referring to variant thickness ratio deforms
Electric energy is bigger with maximum therein；PZT4 and the piezoelectric vibrator of beryllium-bronze substrate composition are utilized for this utility model,
The reasonable radius of curvature of confined planes isWherein α=hm/hpFor thickness ratio,
hmAnd hpIt is respectively metal basal board and piezoelectric chip thickness.
In work process, gear cantilevered axle drives left end cap, disk body, side plate, right end cap, piezoelectric vibrator and excited magnet to turn
Dynamic；In disk body rotation process, activator is in the bottom of slideway under the effect of its inertia force, so that exciting magnet and being subject to
Relative motion is produced between excitatory ferrum.When piezoelectric vibrator and excited magnet go to exciting magnet close to time, excited magnet with swash
Axial force between field core is gradually increased, and piezoelectric vibrator produces axial bending deformation；When excited magnet and exciting magnet
During the overlap of center, the exciting force suffered by piezoelectric vibrator is maximum, deflection is maximum, and metal cantilever beams will abut on confined planes completely；
Hereafter, the deflection of piezoelectric vibrator is gradually reduced along with rotating further of disk body and is gradually brought to original state；Above-mentioned
During being gradually distance from again after excited magnet is close to each other with exciting magnet, piezoelectric vibrator completes and once generates electricity.
Advantage and characteristic: this utility model utilizes the relative motion between the inertia force realization of activator and runner and encourages pressure
Electric tachometer indicator axial bending, it is not necessary to extraneous fixing support, rotatory force suffered by simple in construction and activator little；Piezoelectric vibrator deflection by
Confined planes radius determines, deform after each point stress identical, therefore generated energy is big, reliability is high, effective band width；Can be as standard portion
Part is used for cantilevered axle gear and the coaxial occasion of multi-gear, it is achieved the gear on-line monitoring of real meaning.
Accompanying drawing explanation
Fig. 1 is the structural representation of energy accumulator in one preferred embodiment of this utility model；
The A-A sectional view of Fig. 2 Fig. 1；
Fig. 3 is the structural representation after runner and side plate combine in one preferred embodiment of this utility model；
Fig. 4 is the left view of Fig. 4；
Fig. 5 is the structural representation of right end cap in one preferred embodiment of this utility model；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the structural representation after piezoelectric vibrator and excited magnet assemble in one preferred embodiment of this utility model；
Fig. 8 is that in one preferred embodiment of this utility model, the ratio of piezoelectric vibrator generated energy compares relation curve with thickness.
Detailed description of the invention
Left end cap b, disk body a, side plate j and right end cap c pass sequentially through screw and are connected, left end cap b, disk body a and side plate j set
In cantilevered axle f of gear e, right end cap c is connected with cantilevered axle f by screw；The centre bore a2 of cantilevered axle f and disk body a and side
It is equipped with sealing ring o between the centre bore j2 of plate j；All crimp between left end cap b with disk body a and between side plate j with right end cap c
Having metal basal board h1, the cantilever beam h11 on metal basal board h1 and bonding piezoelectric chip h2 constitutes piezoelectric vibrator h；Piezoelectricity shakes
Sub-h free end is provided with excited magnet g, excited magnet g through screw and installs near disk body a or side plate j and be placed in disk body a side
In rectangle guide groove a1 or in the rectangle guide groove j1 of side plate j side；Cantilevered axle f constitutes slideway D with the ring cavity a3 of disk body a, sliding
Be filled with lubricating oil in road D, the activator d of nonferromugnetic material be installed, the inner edge of activator d and outer rim are inlaid with for
The ball k of Structure deformation, it is inlaid with exciting magnet i to lateral symmetry；The quantity of the piezoelectric vibrator h of activator d both sides equal and
It is symmetrically installed relative to activator d；When the quantity of activator d side piezoelectric vibrator h and exciting magnet i is both greater than 1, two adjacent pressures
Angle Q1 between the symmetrical center line of electric tachometer indicator h and the angle between two adjacent exciting magnet i centers and disk body a centre of gyration line
Can not integral multiple each other between Q2；On the circumference of activator d the same side two, the configuration direction, pole of adjacent excited magnet magnetic g is identical, swashs
The opposite pole encouraging device d both sides coaxial excited magnet g is mounted opposite；Adjacent actuators Magnet i on the circumference of activator d the same side two
Pole configuration is in opposite direction, and the opposite pole of activator d both sides coaxial excitation Magnet i is mounted opposite, to guarantee that activator d is not subject to
Responsive to axial force；On left end cap b, disk body a, side plate j and right end cap c, the side adjacent with piezoelectric vibrator h is designed with shape yardstick
And the identical confined planes M of quantity and deep gouge C；Deep gouge C is used for accommodating piezoelectric chip h2, its planar dimension more than piezoelectric chip h2,
Less than metal cantilever beams h11；Confined planes M is for limiting the deflection of piezoelectric vibrator h, and confined planes M is arc surface and it is rational
Radius of curvature depends on metal basal board h1 and the parameter of piezoelectric chip h2.
In this utility model, for improving generating capacity and the reliability of piezoelectric vibrator h, piezoelectric chip is 0.2～0.3mm
PZT4, metal basal board are beryllium-bronze, and the ratio of the thickness of metal basal board h1 and piezoelectric chip h2 is 1～2.5, now piezoelectric vibrator h
Generating capacity compared with strong, energy comparison is big；Energy is produced than the piezoelectric vibrator h first order buckling deformation referring to variant thickness ratio
Electric energy and maximum therein bigger；The piezoelectricity utilizing PZT4 and beryllium-bronze substrate to constitute for this utility model shakes
Son, the reasonable radius of curvature of confined planes M isWherein α=hm/hpFor thickness
Degree ratio, hmAnd hpIt is respectively metal basal board h1 and the thickness of piezoelectric chip h2.
In work process, cantilevered axle f of gear e drive left end cap b, disk body a, side plate j, right end cap c, piezoelectric vibrator h and
Excited magnet g rotates；In disk body a rotation process, activator d is in the bottom of slideway D under the effect of its inertia force, thus
Make to produce between exciting magnet i and excited magnet g relative motion.When piezoelectric vibrator h and excited magnet g goes to and exciting magnet i
Close to time, the axial force between excited magnet g and exciting magnet i is gradually increased, piezoelectric vibrator h produce axial bending deformation；
When excited magnet g is overlapping with the center of exciting magnet i, the exciting force suffered by piezoelectric vibrator h is maximum, deflection is maximum, and metal hangs
Arm beam h11 will abut on confined planes M completely；Hereafter, the deflection of piezoelectric vibrator h along with rotating further of disk body a by
The least and be gradually brought to original state；The mistake being gradually distance from again after above-mentioned excited magnet g and exciting magnet i is close to each other
Cheng Zhong, piezoelectric vibrator h complete and once generate electricity.
Obviously, this utility model utilizes the relative motion between the inertia force realization of activator d and disk body a and encourages piezoelectricity
Oscillator h axial bending, it is not necessary to extraneous fixing support, rotatory force suffered by simple in construction and activator little；The deflection of piezoelectric vibrator h
After being determined by the radius of confined planes M, deformed, each point stress is identical, therefore generated energy is big, reliability is high, effective band width；Can be used for
Cantilevered axle gear and the coaxial occasion of multi-gear, it is achieved the gear of real meaning and the on-line monitoring of axle system.
Claims (1)
1. a suspension self-excitation runner piezoelectric beam energy accumulator, it is characterised in that: left end cap, disk body, side plate and right end cap lead to successively
Crossing screw to be connected, left end cap, disk body and side plate are enclosed within the cantilevered axle of gear, and right end cap is connected with cantilevered axle；Cantilevered axle and dish
It is equipped with sealing ring between body and the center of side plate；Gold all it is crimped with between left end cap and disk body and between side plate and right end cap
Belonging to substrate, the cantilever beam on metal basal board constitutes piezoelectric vibrator with bonding piezoelectric chip；Piezoelectric vibrator free end is provided with
Excited magnet, excited magnet is installed near disk body or side plate and is placed in the rectangle guide groove of disk body or side plate side；Cantilevered axle
With disk body ring cavity constitute slideway, be filled with lubricating oil in slideway, activator be installed, be inlaid with in outer rim in activator ball,
It is inlaid with exciting magnet to lateral symmetry；Activator both sides piezoelectric vibrator quantity is equal and is symmetrically installed；Activator side piezoelectricity
When oscillator and exciting magnet quantity are both greater than 1, the angle between two adjacent piezoelectric vibrator symmetrical center line and two adjacent exciting magnets
Can not integral multiple each other between angle between center and the disk body line of centres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625476.9U CN205744317U (en) | 2016-06-15 | 2016-06-15 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625476.9U CN205744317U (en) | 2016-06-15 | 2016-06-15 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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| Publication Number | Publication Date |
|---|---|
| CN205744317U true CN205744317U (en) | 2016-11-30 |
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|---|---|---|---|
| CN201620625476.9U Expired - Fee Related CN205744317U (en) | 2016-06-15 | 2016-06-15 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856382A (en) * | 2017-01-12 | 2017-06-16 | 合肥工业大学 | A kind of rotatable movement and the piezoelectric energy collecting device being axially moved |
| CN107395050A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of high ferro rotor string monitoring device |
-
2016
- 2016-06-15 CN CN201620625476.9U patent/CN205744317U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856382A (en) * | 2017-01-12 | 2017-06-16 | 合肥工业大学 | A kind of rotatable movement and the piezoelectric energy collecting device being axially moved |
| CN107395050A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of high ferro rotor string monitoring device |
| CN107395050B (en) * | 2017-08-17 | 2023-05-16 | 浙江师范大学 | High-speed railway shafting monitoring devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |