CN107565849A - A kind of new high ferro rotor string monitoring device - Google Patents
A kind of new high ferro rotor string monitoring device Download PDFInfo
- Publication number
- CN107565849A CN107565849A CN201710732498.4A CN201710732498A CN107565849A CN 107565849 A CN107565849 A CN 107565849A CN 201710732498 A CN201710732498 A CN 201710732498A CN 107565849 A CN107565849 A CN 107565849A
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- piezoelectric vibrator
- reed
- vehicle frame
- rolling element
- substrate
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction 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
- 238000012545 processing 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
- 238000005516 engineering process Methods 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
- 238000011160 research Methods 0.000 description 1
Abstract
The present invention relates to a kind of new 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, for reed free end in the groove of driver, driver is provided with 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, which is provided with, is suspended magnet；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 new high ferro rotor string monitoring
Device.
Background technology
The often work of track column vehicle wheel alignment is to ensure that the key of rail vehicle safe operation.In the past, rail vehicle train was closed
The health status of key member is ensured with periodic maintenance, maintenance；Continuous improvement and people with running velocity
Awareness of safety lifting, vehicle run during wheel pair real time on-line monitoring technical research receive the extensive of domestic and foreign scholars
Concern, required monitoring key element include all many-sides such as temperature, rotating speed, dynamic rate, abrasion and the vibration of axle and bearing.For wheel
For monitoring system, preferable method is that all kinds of sensing and monitoring systems are arranged on into wheel to upper or close wheel to installing, so as to
Realize the direct-on-line monitoring of its running status；But this monitoring scheme is reliable, sufficient because that can not be provided for sensing and monitoring system
Supply of electric power and be difficult to popularization and application because：Train, which is kept in motion and high frequency between train and compartment be present and jolt, shakes
It is dynamic, it is low using reliability during cable power supply；Battery powered is such as used, need to often be changed because battery is limited, work as electricity
Pond not enough power supply and will be unable to realize effective monitoring, even cause serious potential safety hazard when not changing in time.It is limited to electric power
The restriction of supply problem, non real-time, indirect measuring method is still generally used at present, i.e., sensing and monitoring system is placed in road
On base, do not rotate not with car body movement or with wheel shaft.To solve the powerup issue of train shafting real-time monitoring system, both at home and abroad
Scholar proposes the microminiature piezoelectric generator that can be integrated with monitoring system, but existing piezoelectric generator is excitation cycle and pressed
Electric piece bears the tension and compression stress of alternation, therefore reliability is relatively low, effective bandwidth is narrow.
The content of the invention
The present invention proposes a kind of new high ferro rotor string monitoring device, and the embodiment that the present invention uses is：Wheel shaft is through bearing
On vehicle frame, the shell end of vehicle frame is provided with end cap through screw；Axle ends are provided with cam through pressing plate and screw
The cylindrical cam of groove, one end of cylindrical cam are enclosed on wheel shaft and acted against on the inner ring of bearing；On the boss of the housing of vehicle frame
Piezoelectric vibrator and reed are installed through briquetting and screw, reed free end is in the groove of driver；Driver left and right ends
Suspension magnet is housed on face, is bolted to connection between suspension magnet, driver and reed；Driver is provided with 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 and piezoelectricity
Piece bonding forms, and piezoelectric vibrator is symmetrically mounted at reed both sides and substrate is installed close to reed, is crimped between substrate and reed
There is pad, the free end of piezoelectric vibrator is provided with by bolt is suspended magnet；Circuit board and sensor are installed on vehicle frame, pressed
Electric tachometer indicator is connected through wire with circuit board, and circuit board is connected through wire with sensor.
Be flat construction before piezoelectric vibrator installation, after installation because suspension magnet and the repulsive force being suspended between magnet act on
It is changed into warp architecture；When reed does not occur bending and deformation, the deformation of reed both sides piezoelectric vibrator and stress difference are identical；Rolling
The summit in the left cam face of kinetoplast and cam path or the summit in right cam face contact with each other and reach reed flexural deformation
When maximum, now the free end of piezoelectric vibrator is not acted against on end cap or circuit board adjacent thereto；When making piezoelectricity using external force
When the free end of oscillator end cap adjacent thereto or circuit board are in contact, the deflection of the free end of piezoelectric vibrator is permitted no more than it
It is not more than its allowable value with the maximum crushing stress on deflection, piezoelectric patches, that is, 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, hmAnd H
Not to be the thickness of substrate and the gross thickness of piezoelectric vibrator, EmAnd EpThe respectively Young's modulus of substrate and piezoelectric patches, k31WithPoint
Not Wei piezoceramic material electromechanical coupling factor and permissible compression stress, L be piezoelectric vibrator length.
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
Electric tachometer indicator is made its deflection gradually increase by suspension magnet and the active force being suspended between magnet, piezoelectric patches institute compression chord is gradual
Increase but unlikely it is more than allowable value；Opposite side piezoelectric vibrator gradually resets in the presence of its own elastic force, suffered by piezoelectric patches
Compression gradually reduces but unlikely tension occurs；The electric energy that piezoelectric vibrator is generated is after the change-over circuit processing on circuit board
Powered for sensor, sensor obtains temperature, rotating speed or the vibration information of bearing and launched through wireless transmitting system in real time
Go.
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 in driver j groove；Suspension magnet q is housed on the face of driver j left and right ends, suspension magnet q, swashed
Encourage and be bolted to connection between device j and reed i；Driver j is provided with guide pillar j1, and rolling element k is cased with guide pillar j1, rolls
Body k is cylindrical or spherical, and rolling element k is placed in cam path f1；Piezoelectric vibrator h is formed by substrate h1 and piezoelectric patches h2 bondings,
Piezoelectric vibrator h is symmetrically mounted at reed i both sides and substrate h1 installs close to reed i, is crimped between substrate h1 and reed i
Pad m, piezoelectric vibrator h free end are provided with by bolt is suspended magnet o, is suspended magnet o and suspension magnet the q same sex
Magnetic pole is mounted opposite；Circuit board n and sensor p are installed, piezoelectric vibrator h is connected through wire with circuit board n, circuit on vehicle frame c
Plate n is connected through wire with sensor p.
Piezoelectric vibrator h installation before for flat construction, installation after due to suspension magnet q and the repulsive force being suspended between magnet o
Effect is changed into warp architecture；When reed i does not occur bending and deformation, reed i both sides piezoelectric vibrator h deformation and stress difference
It is identical；Rolling element k and cam path f1 the summit Z in left cam face or the summit Y in right cam face contact with each other and make reed i
When flexural deformation reaches maximum, now piezoelectric vibrator h free end is not acted against on end cap d or circuit board n adjacent thereto；When
When the piezoelectric vibrator h free end end cap d adjacent thereto or circuit board n is in contact using external force, piezoelectric vibrator h free end
Deflection be not more than its allowable value no more than the maximum crushing stress on its deflection allowable, piezoelectric patches h2, that is, be 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, hmAnd H
Respectively substrate h1 thickness and piezoelectric vibrator h gross thickness, EmAnd EpRespectively substrate h1 and piezoelectric patches h2 Young's modulus,
k31WithThe respectively electromechanical coupling factor and permissible compression stress of piezoceramic material, L are piezoelectric vibrator 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, the piezoelectric vibrator h of side is made its deflection gradually increase by suspension magnet q and the active force being suspended between magnet o, piezoelectricity
Piece h2 institutes compression chord gradually increase but unlikely is more than allowable value；Opposite side piezoelectric vibrator h is in the presence of its own elastic force
Gradually reset, piezoelectric patches h2 institutes compression chord gradually reduces but unlikely tension occurs；The electric energy that piezoelectric vibrator h is generated is through electricity
Powered after change-over circuit processing on the plate n of road for sensor p, sensor p obtains temperature, rotating speed or the vibration letter of bearing in real time
Cease and launch through wireless transmitting system.
Claims (1)
- A kind of 1. new high ferro rotor string monitoring device, it is characterised in that：Wheel shaft warp beam is housed on vehicle frame, the shell end of vehicle frame End cap is installed through screw；Axle ends are provided with the cylindrical cam of cam path, one end of cylindrical cam through pressing plate and screw It is enclosed on wheel shaft and acts against on the inner ring of bearing；On the boss of the housing of vehicle frame through briquetting and screw be provided with piezoelectric vibrator and Reed, for reed free end in the groove of driver, driver is provided with guide pillar, is cased with rolling element on guide pillar, rolling element is Cylindrical or spherical, rolling element is placed in cam path；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, and piezoelectric vibrator is symmetrically Installed installed in reed both sides and substrate close to reed, pad, the free end peace of piezoelectric vibrator are crimped between substrate and reed Equipped with being suspended magnet；Piezoelectric vibrator installation before for flat construction, installation after due to suspension magnet and the row being suspended between magnet Repulsion effect is changed into warp architecture；Circuit board and sensor are installed, piezoelectric vibrator is connected through wire with circuit board, electricity on vehicle frame Road plate is connected through wire with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732498.4A CN107565849B (en) | 2017-08-17 | 2017-08-17 | A kind of high-speed rail rotor string monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732498.4A CN107565849B (en) | 2017-08-17 | 2017-08-17 | A kind of high-speed rail rotor string monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107565849A true CN107565849A (en) | 2018-01-09 |
| CN107565849B CN107565849B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710732498.4A Active CN107565849B (en) | 2017-08-17 | 2017-08-17 | A kind of high-speed rail rotor string monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912453A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Wind-induced rotary piezoelectric energy harvester |
| CN112187104A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | Rotary piezoelectric-friction composite generator |
| CN112332700A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Self-generating power supply for monitoring wind driven generator blade |
Citations (4)
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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 |
| CN102801357A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system |
| CN202721622U (en) * | 2012-09-01 | 2013-02-06 | 浙江师范大学 | Disc cam excitation and limit type high power rotation type piezoelectric wind generator |
| CN103259452A (en) * | 2013-05-31 | 2013-08-21 | 浙江师范大学 | Shaft-end overhung piezoelectric cantilever beam electric generator |
-
2017
- 2017-08-17 CN CN201710732498.4A patent/CN107565849B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684550A (en) * | 2012-05-09 | 2012-09-19 | 南京航空航天大学 | Y-type composite vibration generator |
| CN102801357A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system |
| CN202721622U (en) * | 2012-09-01 | 2013-02-06 | 浙江师范大学 | Disc cam excitation and limit type high power rotation type piezoelectric wind generator |
| CN103259452A (en) * | 2013-05-31 | 2013-08-21 | 浙江师范大学 | Shaft-end overhung piezoelectric cantilever beam electric generator |
Non-Patent Citations (1)
| Title |
|---|
| 张存娥: "基于压电材料的风能装换装置理论研究与创新设计", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912453A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Wind-induced rotary piezoelectric energy harvester |
| CN110912453B (en) * | 2019-05-18 | 2021-10-01 | 浙江师范大学 | Wind-induced rotary piezoelectric energy harvester |
| CN112187104A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | Rotary piezoelectric-friction composite generator |
| CN112332700A (en) * | 2020-11-15 | 2021-02-05 | 浙江师范大学 | Self-generating power supply for monitoring wind driven generator blade |
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| Publication number | Publication date |
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| CN107565849B (en) | 2019-03-05 |
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Effective date of registration: 20231129 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
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