CN202721625U - Piezoelectric power generation apparatus used for supplying electric power for track vehicle bearing monitoring system - Google Patents
Piezoelectric power generation apparatus used for supplying electric power for track vehicle bearing monitoring system Download PDFInfo
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- CN202721625U CN202721625U CN 201220442496 CN201220442496U CN202721625U CN 202721625 U CN202721625 U CN 202721625U CN 201220442496 CN201220442496 CN 201220442496 CN 201220442496 U CN201220442496 U CN 201220442496U CN 202721625 U CN202721625 U CN 202721625U
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- piezoelectric transducer
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 238000010248 power generation Methods 0.000 title abstract 5
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 13
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model relates to a piezoelectric power generation apparatus used for supplying electric power for a track vehicle bearing monitoring system, belonging to the technical field of track traffic monitoring and piezoelectric power generation, wherein a wheel shaft is mounted on a vehicle frame through a bearing, moving magnets with magnetic poles configured in opposite directions are inlaid on the end face of a T-shaped stop block, a bearing cover is mounted on the vehicle frame through a screw, a piezoelectric transducer is connected inside the bearing cover in a manner of compression through a circular stop sheet and an annular stop sheet, the piezoelectric transducer is formed by a metal substrate and a piezoelectric wafer through bonding. a fixed magnet is mounted on the metal substrate of the piezoelectric transducer through a screw, and a sensor monitoring system located on the vehicle frame is connected with the piezoelectric transducer through a lead. The piezoelectric power generation apparatus has the advantages of integrating a power generation apparatus in the bearing cover, being excited in a non-contact through the magnetic coupling of the rotating wheel shaft, being free of contact impact and noise, and being capable of generate electric power in a uniform speed or a high speed.
Description
Technical field
The utility model belongs to track traffic monitoring and piezo-electric generating technical field, is specifically related to a kind of piezoelectric generating device for rail vehicle bearing monitoring system power supply.
Background technology
The rail vehicle transportation such as railroad train and subway system bearing lifelines of the national economy, and the wheel shaft of rail vehicle and bearing are the keys of guaranteeing the rail vehicle safe operation.In the past, the health status of the crucial running gear such as rail vehicle wheel shaft and bearing was ensured with periodic maintenance, maintenance; Along with improving constantly and the lifting of people's awareness of safety of running velocity, the real time on-line monitoring technical research of wheel shaft and bearing etc. has been subject to the extensive concern of Chinese scholars during the vehicle operating, and required monitoring key element comprises all many-sides such as temperature, rotating speed, dynamic rate, wearing and tearing and vibration of axle and bearing.
For wheel shaft and bearing monitoring system, desirable method is all kinds of sensing and monitoring systems to be installed on the rotating shaft or near bearing install, thereby realizes the direct-on-line monitoring of its running status; But this monitoring scheme is because being difficult to apply for reliable, the sufficient supply of electric power of providing of sensing and monitoring system, reason is: 1. train be kept in motion and train and compartment between have the high frequency vibration of jolting, the low and freight compartment of reliability itself is also without distribution system when adopting cable power supply; 2. as adopting powered battery, need because battery is limited often to change, can't not realize effective monitoring even cause serious potential safety hazard when in time changing when the battery electric quantity deficiency.
The energy supply problem that is limited to sensing and monitoring system, what generally adopt in the reality at present is non real-time, method of measurement indirectly, be about to sensing and monitoring system as on the roadbed, do not move with car body or do not rotate with wheel shaft, such as: the temperature monitoring system that Chinese patent CN101072985A, CN102278950A etc. provide, the axletree monitoring means that Chinese patent CN102120461A, CN102101484A, CN102101485A etc. provide, etc.As seen, because rail vehicle wheel shaft and bearing working environment particularity and the supply of electric power difficult problem that causes thus, real time on-line monitoring system truly, especially directly the real-time monitoring system of wheel axle and bearing state also is difficult to apply.
Summary of the invention
The utility model provides a kind of piezoelectric generating device for rail vehicle bearing monitoring system power supply, is used for rail vehicle bearing monitoring system power supply, to realize real-time, the direct online health monitoring of bearing.
The technical scheme that the utility model is taked is: wheel shaft is installed on the vehicle frame by bearing; The end of wheel shaft is equipped with T-shaped block by screw, and a side pressure of described T-shaped block is connected on the inner ring of bearing, is inlaid with the moving magnet of pole configuration opposite direction on the other end; Bearing cap is installed on the vehicle frame by screw, and the bottom of described bearing cap is provided with cannelure; On the end face of described bearing cap bottom annular recess, by screw PZT (piezoelectric transducer), rounded tabs and annular catch are installed; Described rounded tabs and annular catch are crimped on the center and peripheral position of PZT (piezoelectric transducer) on the end face of bearing cap bottom annular recess; Described PZT (piezoelectric transducer) is by metal substrate and piezoelectric chip is bonding forms; Fixed magnet is installed on the metal substrate of PZT (piezoelectric transducer) and is in the centre of piezoelectric chip by screw; Sensing and monitoring system is installed on the vehicle frame by screw and places the inside of bearing cap, and described sensing and monitoring system is connected with PZT (piezoelectric transducer) by the wire group.
In the utility model, the effect of moving magnet and fixed magnet is to produce repulsive force and attraction alternately by relatively rotating, and the function of PZT (piezoelectric transducer) is to convert mechanical energy to electric energy.
At the rail vehicle run duration, first, second moving magnet that is embedded on the T-shaped block rotates with wheel shaft, and be installed in the PZT (piezoelectric transducer) of bearing cap inside and the fixed magnet that is installed on the described transducer relatively static.When the first moving magnet rotates near the fixed magnet time, namely moving magnet and fixed magnet like pole are close, produce repulsive force; On the contrary, when the second moving magnet rotates near the fixed magnet time, namely moving magnet and fixed magnet opposite pole are close, produce attraction.Replacing of repulsive force and attraction changes so that PZT (piezoelectric transducer) produces the cyclic bending distortion between moving magnet and the fixed magnet, thereby converts mechanical energy to electric energy, and the electric energy that produces is directly used in the driving monitoring system after certain conversion process.
Characteristics of the present utility model are: the bending deformation quantity of PZT (piezoelectric transducer) and single activation energy output are to be determined by the magnetic field intensity between magnetic pole, wheel shaft speedup, deceleration, and the state variation such as speed height on it without directly affecting, therefore adaptable to the rotating speed of wheel shaft, stronger generating capacity is arranged under various rotary states; Simultaneously, can pass through the deflection of magnetic field intensity design limiting PZT (piezoelectric transducer), and then improve the reliability of Blast Furnace Top Gas Recovery Turbine Unit (TRT).
The utility model advantage is: 1. Blast Furnace Top Gas Recovery Turbine Unit (TRT) is integrated in the bearing cap, by wheel shaft and the magnetic couple noncontact excitation of rotation, the PZT (piezoelectric transducer) damage that contactless impact, noise and contact excitation may cause; 2. PZT (piezoelectric transducer) is out of shape along axle axial, and deflection and energy output are not affected by the wheel shaft rotary state, rotating speed adaptive capacity and generating capacity by force, all can generate electricity when at the uniform velocity reaching high speed, and reliability is high.
Description of drawings
Fig. 1 is the structure diagrammatic cross-sectional view of piezoelectric generating device in preferred embodiment of the utility model;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the I section enlarged drawing of Fig. 1;
Fig. 4 is the structural representation of the utility model PZT (piezoelectric transducer);
Fig. 5 is the B-B view of Fig. 4.
Embodiment
In the utility model, the effect of moving magnet 4 and fixed magnet 10 is to produce repulsive force and attraction alternately by relatively rotating, and the function of PZT (piezoelectric transducer) 7 is to convert mechanical energy to electric energy.
At the rail vehicle run duration, T-shaped block 4 and first group of moving magnet 5 and second group of moving magnet 5 ' of being embedded on the T-shaped block 4 rotate with wheel shaft 3, and be installed in the PZT (piezoelectric transducer) 7 of bearing cap 6 inside and the fixed magnet 10 that is installed on the described transducer 7 relatively static.When near rotating to the fixed magnet 10 time in first group of moving magnet 5, the N utmost point of moving magnet 5 and the N of fixed magnet are extremely close, produce repulsive force, thereby make PZT (piezoelectric transducer) 7 generation flexural deformations left; Repulsive force after first group of moving magnet 5 leaves fixed magnet 10, between magnetic pole fades away.Meanwhile, second group of moving magnet 5 ' is near fixed magnet 10, and the S utmost point of moving magnet 5 ' and the N of fixed magnet 10 are extremely close, produce attraction, thus the flexural deformation that PZT (piezoelectric transducer) 7 is produced to the right.First group of moving magnet 5 and second group of moving magnet 5 ' alternately near and away from fixed magnet 10, even PZT (piezoelectric transducer) 7 produces cyclic bending distortion alternately, thereby convert mechanical energy to electric energy; The electric energy that generates flows to the sensing and detecting system 12 that is positioned on the vehicle frame 1 by wire group 11.
Claims (1)
1. piezoelectric generating device that is used for rail vehicle bearing monitoring system power supply, it is characterized in that: wheel shaft is installed on the vehicle frame by bearing; The end of wheel shaft is equipped with T-shaped block by screw, and a side pressure of described T-shaped block is connected on the inner ring of bearing, is inlaid with the moving magnet of pole configuration opposite direction on the other end; Bearing cap is installed on the vehicle frame by screw, and the bottom of described bearing cap is provided with cannelure; On the end face of described bearing cap bottom annular recess, by screw PZT (piezoelectric transducer), rounded tabs and annular catch are installed; Described rounded tabs and annular catch are crimped on the center and peripheral position of PZT (piezoelectric transducer) on the end face of bearing cap bottom annular recess; Described PZT (piezoelectric transducer) is by metal substrate and piezoelectric chip is bonding forms; Fixed magnet is installed on the metal substrate of PZT (piezoelectric transducer) and is in the centre of piezoelectric chip by screw; Sensing and monitoring system is installed on the vehicle frame by screw and places the inside of described bearing cap, and described sensing and monitoring system is connected with PZT (piezoelectric transducer) by the wire group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442496 CN202721625U (en) | 2012-09-01 | 2012-09-01 | Piezoelectric power generation apparatus used for supplying electric power for track vehicle bearing monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442496 CN202721625U (en) | 2012-09-01 | 2012-09-01 | Piezoelectric power generation apparatus used for supplying electric power for track vehicle bearing monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN202721625U true CN202721625U (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220442496 Expired - Lifetime CN202721625U (en) | 2012-09-01 | 2012-09-01 | Piezoelectric power generation apparatus used for supplying electric power for track vehicle bearing monitoring system |
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| CN (1) | CN202721625U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103982540A (en) * | 2014-05-28 | 2014-08-13 | 浙江师范大学 | High-speed ball bearing with integrated monitoring device |
| CN109586616A (en) * | 2019-01-30 | 2019-04-05 | 浙江师范大学 | A kind of frequency modulation type magnetic coupling piezoelectric generator |
| CN109831120A (en) * | 2019-01-30 | 2019-05-31 | 浙江师范大学 | A kind of frequency conversion type magnetic encourages rotary piezoelectric generator |
| CN113464574A (en) * | 2021-07-05 | 2021-10-01 | 浙江师范大学 | Self-generating bearing monitoring device |
-
2012
- 2012-09-01 CN CN 201220442496 patent/CN202721625U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103982540A (en) * | 2014-05-28 | 2014-08-13 | 浙江师范大学 | High-speed ball bearing with integrated monitoring device |
| CN109586616A (en) * | 2019-01-30 | 2019-04-05 | 浙江师范大学 | A kind of frequency modulation type magnetic coupling piezoelectric generator |
| CN109831120A (en) * | 2019-01-30 | 2019-05-31 | 浙江师范大学 | A kind of frequency conversion type magnetic encourages rotary piezoelectric generator |
| CN109831120B (en) * | 2019-01-30 | 2020-04-10 | 浙江师范大学 | Frequency conversion type magnetic excitation rotating piezoelectric generator |
| CN113464574A (en) * | 2021-07-05 | 2021-10-01 | 浙江师范大学 | Self-generating bearing monitoring device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130206 Effective date of abandoning: 20150429 |