CN107395050A - A kind of high ferro rotor string monitoring device - Google Patents
A kind of high ferro rotor string monitoring device Download PDFInfo
- Publication number
- CN107395050A CN107395050A CN201710728642.7A CN201710728642A CN107395050A CN 107395050 A CN107395050 A CN 107395050A CN 201710728642 A CN201710728642 A CN 201710728642A CN 107395050 A CN107395050 A CN 107395050A
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- piezoelectric vibrator
- reed
- vehicle frame
- circuit board
- piezoelectric
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 7
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000222712 Kinetoplastida Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000737 periodic effect Effects 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
- H02N2/186—Vibration harvesters
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of high ferro rotor string monitoring device, the monitoring of category rail vehicle and field of piezoelectric generation.Wheel shaft warp beam is housed on vehicle frame, and the shell end of vehicle frame is equipped with end cap；Axle ends are equipped with the cylindrical cam of strap cam groove, and one end of cylindrical cam is enclosed on wheel shaft and acted against on the inner ring of bearing；Piezoelectric vibrator and reed are housed, reed free end is provided with driver through rivet, and driver is provided with jacking block and guide pillar, and rolling element is cased with guide pillar, and rolling element is cylindrical or spherical, and rolling element is placed in cam path on the boss of the housing of vehicle frame；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, and piezoelectric vibrator is symmetrically mounted at reed both sides and substrate is installed close to reed, pad is crimped between substrate and reed, the free end of piezoelectric vibrator is acted against on jacking block；Circuit board and sensor are installed, piezoelectric vibrator is connected through wire with circuit board, and circuit board is connected through wire with sensor on vehicle frame.
Description
Technical field
The invention belongs to track traffic monitoring and piezo-electric generating technical field, and in particular to a kind of high ferro rotor string monitoring dress
Put.
Background technology
The critical component to being rail vehicle is taken turns, its health status was ensured by periodic maintenance, maintenance in the past.
With the continuous improvement of running velocity and the lifting of people's awareness of safety, the real-time online prison of wheel pair during vehicle is run
Survey technology studies the extensive concern for receiving domestic and foreign scholars, and required monitoring key element includes temperature, rotating speed, the dynamic of axle and bearing
All many-sides such as rigidity, abrasion and vibration.For taking turns for monitoring system, preferable method is by all kinds of sensing and monitoring systems
Installed in wheel to upper or close wheel to installation, so as to realize that the direct-on-line of its running status monitors；But this monitoring scheme because
Reliable, sufficient supply of electric power can not be provided for sensing and monitoring system and be difficult to popularization and application, because：Train is in motion shape
High frequency pitch between state and train and compartment be present, it is low using reliability during cable power supply；Battery powered is such as used, because of electricity
Pond service life is limited and need to often change, will be unable to realize when battery electric quantity deficiency is not changed in time effective monitoring,
Even cause serious potential safety hazard.It is limited to the restriction of power supply problem, at present still generally using non real-time, indirect
Measuring method, i.e., sensing and monitoring system is placed on roadbed, do not rotated not with car body movement or with wheel shaft.To solve train axle
It is the powerup issue of real-time monitoring system, domestic and foreign scholars propose the microminiature piezoelectric generator that can be integrated with monitoring system,
But existing piezoelectric generator is the tension and compression stress that excitation cycle and piezoelectric patches bear alternation, therefore reliability is relatively low, effective bandwidth
It is narrow.
The content of the invention
The present invention proposes a kind of high ferro rotor string monitoring device, and the embodiment that the present invention uses is：Wheel shaft is installed through bearing
On vehicle frame, the shell end of vehicle frame is provided with end cap through screw；Axle ends are provided with cam path through pressing plate and screw
Cylindrical cam, one end of cylindrical cam are enclosed on wheel shaft and acted against on the inner ring of bearing；Through pressure on the boss of the housing of vehicle frame
Block and screw are provided with piezoelectric vibrator and reed, and reed free end is provided with driver through rivet, driver be provided with jacking block and
Guide pillar, rolling element is cased with guide pillar, rolling element is cylindrical or spherical, and rolling element is placed in cam path；Piezoelectric vibrator is by substrate
Formed with piezoelectric piece bonding, piezoelectric vibrator is symmetrically mounted at reed both sides and substrate is installed close to reed, substrate and reed it
Between be crimped with pad, the free end of piezoelectric vibrator is acted against on jacking block；Circuit board and sensor, piezoelectric vibrator are installed on vehicle frame
It is connected through wire with circuit board, circuit board is connected through wire with sensor.
Piezoelectric vibrator installation before be flat construction, install after be warp architecture；When reed does not occur bending and deformation, reed two
The deformation of side pressure electric tachometer indicator and stress difference are identical, and the maximum stress on piezoelectric patches is the half of its allowable value；Roll
When the left cam vertex of surface or right cam vertex of surface of body and cam path contact with each other and the reed flexural deformation is reached maximum,
Maximum crushing stress on piezoelectric patches is not more than its deflection allowable no more than its allowable value, the deflection of piezoelectric vibrator free end,
It is less thanWherein：B=1- α+α β, A=α4
(1-β)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep,
hmWith H be be not substrate thickness and piezoelectric vibrator gross thickness, EmAnd EpThe respectively Young's modulus of substrate and piezoelectric patches, k31WithThe respectively electromechanical coupling factor and permissible compression stress of piezoceramic material, L are the length of piezoelectric vibrator.
During work, wheel shaft drives cylindrical cam to rotate, and rolling element is reciprocating in cam path interior edge cylinder cam axle,
Encourage piezoelectric vibrator of reciprocating vibration through driver again, so as to convert mechanical energy into electric energy：During reed flexural deformation, the pressure of side
The active force and deflection of jacking block suffered by electric tachometer indicator gradually increase, piezoelectric patches institute compression chord gradually increases but unlikely more than allowable
Value；Opposite side piezoelectric vibrator in the presence of its own elastic force gradually reset, piezoelectric patches institute compression chord gradually reduce but not
To there is tension；The electric energy that piezoelectric vibrator is generated is powered after the change-over circuit processing on circuit board for sensor, sensing
Device obtains temperature, rotating speed or the vibration information of bearing and launched through wireless transmitting system in real time.
Advantage and characteristic：Piezoelectric vibrator is subjected only to compression by unidirectional excitation deformation, piezoelectric patches in work, is avoided because of tension
The excessive damage of stress, reliability are high；Piezoelectric vibrator deflection is the half of cam lift during any rotating speed, therefore reliability is high, has
It is strong to imitate bandwidth, generating and power supply capacity.
Brief description of the drawings
Fig. 1 is the section of structure of monitoring device in a preferred embodiment of the present invention；
Fig. 2 is the structural representation of a preferred embodiment of the present invention cam；
Fig. 3 is driver and the structural representation after rolling element assembling in a preferred embodiment of the present invention；
Fig. 4 is Fig. 3 left view；
Fig. 5 is Fig. 1 A-A sectional view；
Fig. 6 is the section of structure after wheel shaft rotation 180 degree in monitoring device shown in Fig. 1.
Embodiment
Wheel shaft a is arranged on vehicle frame c through bearing b, and the end of the housing c1 on vehicle frame c is provided with end cap d through screw；Wheel shaft
A end is provided with cam path f1 cylindrical cam f through pressing plate e and screw, and cylindrical cam f one end is enclosed on wheel shaft a simultaneously
On the inner ring for acting against bearing b；Piezoelectric vibrator h and reed i are installed through briquetting g and screw on vehicle frame c housing c1 boss,
Reed i free ends are provided with driver j through rivet, and driver j is provided with jacking block j1 and guide pillar j2, rolling element is cased with guide pillar j2
K, rolling element k are cylindrical or spherical, and rolling element k is placed in cam path f1；Piezoelectric vibrator h is bonded by substrate h1 and piezoelectric patches h2
Form, piezoelectric vibrator h is symmetrically mounted at reed i both sides and substrate h1 installs close to reed i, between substrate h1 and reed i
Pad m is crimped with, piezoelectric vibrator h free end is acted against on jacking block j1；Circuit board n and sensor p are installed on vehicle frame c, pressed
Electric tachometer indicator h is connected through wire with circuit board n, and circuit board n is connected through wire with sensor p.
Piezoelectric vibrator h installation before be flat construction, install after be warp architecture；When reed i does not occur bending and deformation, reed i
Both sides piezoelectric vibrator h deformation and stress difference are identical, and the maximum stress on piezoelectric patches h2 is the half of its allowable value；Rolling
The kinetoplast k and cam path f1 summit Z in left cam face or the summit Y in right cam face contacts with each other and becomes reed i bendings
When shape reaches maximum, the maximum crushing stress on piezoelectric patches h2 is little no more than its allowable value, the deflection of piezoelectric vibrator h free ends
In its deflection allowable, that is, it is less thanWherein：B
=1- α+α β, A=α4(1-β)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=
hm/ H, β=Em/Ep, hmIt is respectively substrate h1 thickness and piezoelectric vibrator h gross thickness with H, EmAnd EpRespectively substrate h1 and pressure
Electric piece h2 Young's modulus, k31WithRespectively the electromechanical coupling factor and permissible compression stress of piezoceramic material, L shake for piezoelectricity
Sub- h length.
During work, wheel shaft a drives cylindrical cam f to rotate, and rolling element k makees in cam path f1 interior edge cylindrical cams f axial direction
Move back and forth, then encourage piezoelectric vibrator h of reciprocating vibration through driver j, so as to convert mechanical energy into electric energy：Reed i bendings become
During shape, jacking block j1 active force and deflection suffered by the piezoelectric vibrator h of side gradually increase, piezoelectric patches h2 institutes compression chord is gradual
Increase but unlikely it is more than allowable value；Opposite side piezoelectric vibrator h gradually resets in the presence of its own elastic force, piezoelectric patches h2 institutes
Compression chord gradually reduces but unlikely tension occurs；The electric energy that piezoelectric vibrator h is generated through the change-over circuit on circuit board n at
Powered after reason for sensor p, sensor p obtains temperature, rotating speed or the vibration information of bearing and through wireless transmitting system in real time
Launch.
Claims (1)
- A kind of 1. high ferro rotor string monitoring device, it is characterised in that：Wheel shaft warp beam is housed on vehicle frame, and the shell end of vehicle frame is through spiral shell Nail is provided with end cap；Axle ends are provided with the cylindrical cam of cam path through pressing plate and screw, and one end of cylindrical cam is enclosed on On wheel shaft and act against on the inner ring of bearing；Piezoelectric vibrator and spring are installed through briquetting and screw on the boss of the housing of vehicle frame Piece, reed free end are provided with driver through rivet, and driver is provided with jacking block and guide pillar, rolling element is cased with guide pillar, roll Body is cylindrical or spherical, and rolling element is placed in cam path；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, piezoelectric vibrator pair Claim ground to be installed installed in reed both sides and substrate close to reed, pad, the freedom of piezoelectric vibrator are crimped between substrate and reed End is acted against on jacking block；Piezoelectric vibrator installation before be flat construction, install after be warp architecture；Be provided with vehicle frame circuit board and Sensor, piezoelectric vibrator are connected through wire with circuit board, and circuit board is connected through wire with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728642.7A CN107395050B (en) | 2017-08-17 | 2017-08-17 | High-speed railway shafting monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728642.7A CN107395050B (en) | 2017-08-17 | 2017-08-17 | High-speed railway shafting monitoring devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107395050A true CN107395050A (en) | 2017-11-24 |
| CN107395050B CN107395050B (en) | 2023-05-16 |
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ID=60354205
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728642.7A Active CN107395050B (en) | 2017-08-17 | 2017-08-17 | High-speed railway shafting monitoring devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN107395050B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940242A (en) * | 2017-12-13 | 2018-04-20 | 安徽理工大学 | A kind of self-powered Monitoring Pinpelines device |
| CN112187104A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | Rotary piezoelectric-friction composite generator |
| CN112202361A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Energy collecting device based on windmill toy |
| CN112311277A (en) * | 2020-11-15 | 2021-02-02 | 浙江师范大学 | Self-powered river monitoring device |
| CN112332703A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Miniature generator for river water monitoring system |
| CN112332700A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Self-generating power supply for monitoring wind driven generator blade |
| CN113131788A (en) * | 2021-04-22 | 2021-07-16 | 长春工业大学 | Indirect-excitation rotary cam type piezoelectric energy harvesting device |
| CN113364349A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | Train wheel set monitoring device |
| CN115276465A (en) * | 2022-07-11 | 2022-11-01 | 西安理工大学 | Human motion energy capture device |
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| CN102790550A (en) * | 2012-09-01 | 2012-11-21 | 浙江师范大学 | Power generation device following up spindle of propeller |
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| CN106130400A (en) * | 2016-06-15 | 2016-11-16 | 浙江师范大学 | A kind of scroll actuation circular piezoelectric vibrator energy accumulator |
| CN205744317U (en) * | 2016-06-15 | 2016-11-30 | 浙江师范大学 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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| CN102684550A (en) * | 2012-05-09 | 2012-09-19 | 南京航空航天大学 | Y-type composite vibration generator |
| CN102751907A (en) * | 2012-06-14 | 2012-10-24 | 广州市番禺奥迪威电子有限公司 | Cantilever beam type piezoelectric generator |
| CN102790550A (en) * | 2012-09-01 | 2012-11-21 | 浙江师范大学 | Power generation device following up spindle of propeller |
| CN102801360A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Disk cam excited and limited high-power rotary piezoelectric wind generator |
| CN103414377A (en) * | 2013-05-30 | 2013-11-27 | 大连理工大学 | Frequency-modulable rotary piezoelectric power generation device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940242A (en) * | 2017-12-13 | 2018-04-20 | 安徽理工大学 | A kind of self-powered Monitoring Pinpelines device |
| CN112202361A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Energy collecting device based on windmill toy |
| CN112187104A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | Rotary piezoelectric-friction composite generator |
| CN112311277A (en) * | 2020-11-15 | 2021-02-02 | 浙江师范大学 | Self-powered river monitoring device |
| CN112332703A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Miniature generator for river water monitoring system |
| CN112332700A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Self-generating power supply for monitoring wind driven generator blade |
| CN112311277B (en) * | 2020-11-15 | 2021-10-15 | 浙江师范大学 | Self-powered river monitoring device |
| CN113131788A (en) * | 2021-04-22 | 2021-07-16 | 长春工业大学 | Indirect-excitation rotary cam type piezoelectric energy harvesting device |
| CN113364349A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | Train wheel set monitoring device |
| CN115276465A (en) * | 2022-07-11 | 2022-11-01 | 西安理工大学 | Human motion energy capture device |
| CN115276465B (en) * | 2022-07-11 | 2024-05-10 | 西安理工大学 | Human motion energy capture device |
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| CN107395050B (en) | 2023-05-16 |
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Effective date of registration: 20240115 Address after: No. 9 Hisense Tianchen Road, High tech Zone, Jinan City, Shandong Province, 250000 Patentee after: Tianhong (Jinan) Intelligent Equipment Industry Research Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |