CN110450639B - Carbon slide plate device of pantograph of electrified train - Google Patents
Carbon slide plate device of pantograph of electrified train Download PDFInfo
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- CN110450639B CN110450639B CN201910758800.2A CN201910758800A CN110450639B CN 110450639 B CN110450639 B CN 110450639B CN 201910758800 A CN201910758800 A CN 201910758800A CN 110450639 B CN110450639 B CN 110450639B
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- carbon slide
- slide plate
- pantograph
- carbon
- vibration
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 91
- 230000002159 abnormal effect Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 39
- 238000013016 damping Methods 0.000 claims description 36
- 238000005299 abrasion Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 5
- 239000003190 viscoelastic substance Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 241001125292 Balaena mysticetus Species 0.000 description 3
- 230000007123 defense Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention relates to a carbon slide plate device of an electrified train pantograph, which comprises a carbon slide plate, a fixed frame, a slide plate mounting seat, a balance support frame and a transverse bracket, wherein the carbon slide plate is mounted in the fixed frame to form a carbon slide plate module, two ends of the carbon slide plate module are mounted on the slide plate mounting seat, the slide plate mounting seat is mounted on the transverse bracket through the balance support frame, and the transverse bracket is connected with the pantograph and further comprises a vibration converter mounted along the length direction of the carbon slide plate module. Compared with the prior art, the invention can control the fluctuation of contact force of the pantograph net and the vibration amplitude of the carbon slide plate, realize the vibration energy transfer and conversion of the carbon slide plate structure, and control the relative abnormal dynamic vibration of the pantograph net, thereby reducing the contact friction loss of the carbon slide plate of the pantograph, improving the stability of the current receiving level and improving the current receiving quality.
Description
Technical Field
The invention relates to the field of pantographs of electrified trains, in particular to a carbon slide plate device of the pantograph of the electrified train.
Background
The power of the electrified railway transportation vehicle adopts a driving motor system, and a pantograph is a current collector of the railway transportation vehicle, is arranged on the top of a locomotive, and is one of key electrical equipment for the electrified railway to obtain electric energy from a contact net. The pantograph structure generally comprises a sliding slat, a balance support and a pantograph head system of a transverse bracket, a balance rod, an upper arm rod, a lower arm rod, a pull rod, a bottom frame and the like, and in order to meet the stability and continuity of current collector, the pantograph and a contact net (wire) are required to keep good following performance.
In the normal running process of the train, the vibration of different amplitudes and different frequencies of the train body is caused by the excitation of the rolling dynamics of the wheel rail such as the irregularity of the rail, the polygon of the wheels, the roughness of the wheel rail and the like, the excitation of the power system of the train system and the like, and the vibration is directly transmitted to the pantograph base through the train body, so that the vibration of the pantograph is caused. Meanwhile, the sliding and swinging of the pantograph and the contact net and the unavoidable impact excitation of the pantograph and the net also cause the vibration of the pantograph, and because the complex vibration and the dynamic characteristics of the sliding plate strips cause dynamic fluctuation of the contact force amplitude and the relative sliding amplitude of the pantograph and the net at different positions of the carbon sliding plate of the pantograph, the different dynamic fluctuation at different positions can generate uneven abrasion of the carbon sliding plate, and the dynamic contact force and the dynamic relative sliding displacement caused by the vibration also greatly accelerate the abrasion speed of the carbon sliding plate. Although the bow-shaped structure and the damping system of the pantograph can isolate and absorb and relieve the vibration with partial higher frequency, the vibration with middle and low frequency (lower than 200 HZ) cannot be effectively isolated and absorbed, so that the high-amplitude vibration of the carbon sliding plate and the contact wire is caused, the carbon sliding plate of the pantograph is abnormally worn, and even a pantograph net accident is caused; the carbon slide plate is worn abnormally, the service life of the carbon slide plate in a subway operation line is seriously reduced from normal 80 weeks (half a year of 1) to less than 1 week, a great deal of manpower and financial resources are required to be spent for frequent replacement, and the carbon slide plate is also a huge potential safety hazard.
At present, the underground line of urban rail transit widely adopts a rigid contact net, and as the rigid contact net has small elasticity compared with a flexible contact net, the following property of a bow net is poor, and compared with the flexible contact net, the damage caused when the rigid contact net vibrates a pantograph is larger. Currently, the phenomenon of superfinishing (abnormal abrasion) of carbon sliding plates in urban rail transit is common, and the phenomenon causes potential safety hazards and increased cost of rail transit operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the carbon slide plate device of the pantograph of the electrified train.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides an electrified train pantograph carbon slide device, includes carbon slide, mount, slide mount pad, balance support frame and horizontal bracket, carbon slide installs and forms the carbon slide module in the mount, and the both ends of carbon slide module are installed on the slide mount pad, the slide mount pad passes through the balance support frame and installs on horizontal bracket, horizontal bracket connect the pantograph, still include the vibration converter of installing along carbon slide module length direction.
Further, the vibration converter comprises at least one frequency modulation resonance vibration power damping unit, wherein each frequency modulation resonance vibration power damping unit comprises a resonance spring mechanism and a resonance mass mechanism, and the resonance spring mechanism wraps the resonance mass mechanism.
Further, the vibration converter comprises at least one frequency modulation resonance vibration power damping unit, wherein each frequency modulation resonance vibration power damping unit comprises a resonance spring mechanism and a resonance mass mechanism, and the resonance spring mechanism and the resonance mass mechanism are arranged in a stacked mode at intervals.
Further, the resonant spring mechanism is a viscoelastic material with complex stiffness damping characteristics.
Further, each frequency-modulated vibration force damping unit is arranged below the fixing frame; or an inner cavity is arranged in the fixing frame, and the frequency modulation resonance power damping unit is arranged in the inner cavity.
Further, the frequency modulation harmonic vibration force damping unit is a granular collision body, and each granular collision body is formed by wrapping a resonance quality mechanism by a resonance spring mechanism.
Further, the plurality of frequency modulation resonance power damping units are discretely arranged along the length direction of the carbon slide plate module according to the design requirement of correcting the abnormal abrasion shape of the carbon slide plate, wherein the abnormal abrasion shape of the carbon slide plate is that the abnormal abrasion shape of the upper surface of the carbon slide plate, which is abraded by a net wire, forms different abrasion amounts along the length direction and corresponds to the modal shape of the carbon slide plate, the modal shape of the carbon slide plate is the modal shape in the vertical direction, the transverse direction and the torsion under the constraint condition of the operation of the carbon slide plate, and the modal shape of the carbon slide plate corresponds to the corresponding resonance frequency of the carbon slide plate module.
Further, still include the installation module, the installation module include bottom plate and connecting piece, vibration converter install on the bottom plate, the bottom plate passes through the connecting piece and connects the mount.
Compared with the prior art, the invention has the following advantages:
1. According to the invention, the vibration converter is arranged on the fixed plate and is used for correcting the abnormal dynamic shape of the carbon sliding plate to control the fluctuation of contact force of the pantograph net and the vibration amplitude of the carbon sliding plate, the vibration converter adopts a specific structure and layout to realize the vibration energy transfer and conversion of the carbon sliding plate structure and control the relative abnormal dynamic vibration of the pantograph net, so that the contact friction loss of the carbon sliding plate of the pantograph is reduced, the stability of the current receiving level is improved, and the current receiving quality is improved.
2. The invention has simple structure and convenient implementation, can be directly applied to the existing pantograph carbon slide plate, and can be introduced into the newly designed pantograph carbon slide plate.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment.
Fig. 2 is a schematic structural diagram of a vibration transducer according to an embodiment.
Fig. 3 is a schematic side cross-sectional view of a vibration transducer according to an embodiment.
Fig. 4 is a schematic structural diagram of the second embodiment.
Fig. 5 is a schematic structural diagram of the third embodiment.
Fig. 6 is a schematic structural view of an abnormal wear shape.
FIG. 7 is a schematic structural view of a carbon sled modal shape.
Fig. 8 is a schematic structural diagram of the fourth embodiment.
Fig. 9 is a schematic structural diagram of a fifth embodiment.
Fig. 10 is a schematic structural diagram of a sixth embodiment.
Fig. 11 is a schematic structural diagram of a seventh embodiment.
Reference numerals: 1. the carbon slide plate module, 11, a carbon slide plate, 12, a fixed frame, 13, an inner cavity, 2, a slide plate mounting seat, 3, a balance support frame, 4, a transverse bracket, 5, a frequency modulation resonance power damping unit, 51, a resonance spring mechanism, 52, a resonance mass mechanism, 6, a mounting module, 61, a bottom plate, 62, a connecting piece, 7, an abnormal abrasion shape, 71 and a carbon slide plate modal shape.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Example 1
Some parts of different types of pantographs may be different, but the basic structure of the pantograph is very different, and the structure of the pantograph generally comprises a bow head system, a balance rod, an upper arm rod, a lower arm rod, a pull rod, a bottom frame and the like. As shown in fig. 1, the embodiment provides a carbon slide plate device of an electrified train pantograph, which comprises a carbon slide plate 11, a fixing frame 12, a slide plate mounting seat 2, a balance support frame 3, a vibration transducer and a transverse bracket 4, wherein the transverse bracket 4 is connected with a bow head system, the carbon slide plate 11 is mounted in the fixing frame 12 to form a carbon slide plate module 1, two ends of the carbon slide plate module 1 are mounted on the slide plate mounting seat 2, and the slide plate mounting seat 2 is mounted on the transverse bracket 4 through the balance support frame 3. The vibration transducer is installed below the fixing frame 12 along the length direction of the carbon sled module 1.
As shown in fig. 2, the vibration converter includes at least one frequency-modulated vibration force damping unit 5, and the present embodiment employs two frequency-modulated vibration force damping units 5 on the left and right. Wherein each tuned vibration force damping unit 5 comprises a resonant spring mechanism 51 and a resonant mass mechanism 52, the resonant spring mechanism 51 enveloping the resonant mass mechanism 52. As shown in fig. 3, a plurality of resonant mass mechanisms 52 are enclosed inside the resonant spring mechanism 51. The resonant spring mechanism 51 is a viscoelastic material with complex stiffness damping characteristics, and the damping loss factor range of the viscoelastic material with stiffness damping characteristics is 0-1, such as model SA-3 damping plate (from the national defense industry press, 2012, 165), or model PD-1 pouring damping material (from the national defense industry press, 2012, 139), which is developed by the national defense industry press, and the resonant mass mechanism 52 is made of national standard GB/T24511-2017 model 303 stainless steel. The ratio of the equivalent stiffness k e to the equivalent mass m e of the tuned vibration force damping unit 5 composed of the resonant spring mechanism 51 and the resonant mass mechanism 52 satisfies the resonance frequency f range 2-2000Hz, the resonance frequency f= (k e/me)0.5/(2pi).
The present embodiment further includes a mounting module 6, the mounting module 6 including a base plate 61 and a connection member 62, the vibration transducer being mounted on the base plate 61, the base plate 61 being connected to the fixing frame 12 through the connection member 62. The connector 62 may be an anchor bolt, or a resilient clip, or a high strength glue, or a weld. The bottom plate 61 is a special mounting plate for mounting the transition plate of the fm resonance power damping unit 5 or the external constraint plate of the fm resonance power damping unit 5.
Example two
As shown in fig. 4, this embodiment provides a carbon slide plate device for a pantograph of an electrified train, which has the same basic structure as that of the first embodiment, and is different in that: the vibration converter is a strip frequency modulation resonance power damping unit 5, and is arranged below the fixing frame 12 through the installation module 6, and the specific structure of the frequency modulation resonance power damping unit 5 is the same as that of the first embodiment.
Example III
As shown in fig. 5, this embodiment provides a carbon slide plate device for a pantograph of an electrified train, which has the same basic structure as that of the first embodiment, and is different in that: the vibration converter is formed by arranging a plurality of frequency-modulated harmonic vibration force damping units discretely along the length direction of the carbon slide module 1 according to the abnormal abrasion shape of the corrected carbon slide, wherein the abnormal abrasion shape 7 of the carbon slide is the abnormal abrasion shape 7 (shown in fig. 6) of which the upper surface of the carbon slide is abraded by a net wire to form different abrasion amounts along the length direction, the abnormal abrasion shape 7 corresponds to the carbon slide modal shape 71, the carbon slide modal shape 71 (shown in fig. 7, five possible modal shapes are 1 st-5 th) is the modal shape in the vertical direction, the transverse direction and the torsion under the constraint condition of the operation of the carbon slide, and the carbon slide modal shape 71 corresponds to the corresponding resonance frequency of the carbon slide module 1.
Example IV
As shown in fig. 8, this embodiment provides a carbon slide plate device for a pantograph of an electrified train, which has the same basic structure as that of the first embodiment, and differs from the first embodiment in that: the frequency modulation resonance vibration force damping unit 5 of the vibration converter is arranged below the fixed plate through the mounting module 6, and the frequency modulation resonance vibration force damping unit 5 is a spherical resonance spring mechanism 51 and wraps a spherical resonance mass mechanism 52. The bottom plate 61 of the installation module 6 is a spherical shell sleeved outside the resonant spring mechanism 51 and is connected with the bottom surface of the fixing frame 12 through bolts.
Example five
As shown in fig. 9, the embodiment provides a carbon slide plate device of an electrified train pantograph, which comprises a carbon slide plate 11, a fixing frame 12, a slide plate mounting seat, a balance support frame, a vibration transducer and a transverse bracket, wherein the transverse bracket is connected with a bow head system, the carbon slide plate is mounted in the fixing frame 12 to form a carbon slide plate module 1, two ends of the carbon slide plate module 1 are mounted on the slide plate mounting seat, and the slide plate mounting seat is mounted on the transverse bracket through the balance support frame. An inner cavity 13 is arranged in the fixing frame 12, and the vibration transducer is arranged in the inner cavity 13 along the length direction of the carbon slide plate module 1. The structure of the vibration transducer is the same as that of the first embodiment.
Example six
As shown in fig. 10, this embodiment provides a carbon slide plate device for a pantograph of an electrified train, which has the same basic structure as that of the fifth embodiment, and is different in that: the tuned vibration force damping unit 5 of the vibration transducer is a granular collision body, each granular collision body being formed by a resonant spring mechanism 51 enveloping a resonant mass mechanism 52.
Example seven
As shown in fig. 11, this embodiment provides a carbon slide plate device for a pantograph of an electrified train, which has the same basic structure as that of the fifth embodiment, and is different in that: the tuned vibration force damping unit 5 of the vibration converter includes a resonant spring mechanism 51 and a resonant mass mechanism 52, and the resonant spring mechanism 51 and the resonant mass mechanism 52 are mounted below the mount 12 in a spaced-apart stacked arrangement.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (4)
1. The utility model provides an electrified train pantograph carbon slide device, includes carbon slide (11), mount (12), slide mount pad (2), balance support frame (3) and horizontal bracket (4), carbon slide installs and forms carbon slide module (1) in mount pad (12), and the both ends of carbon slide module (1) are installed on slide mount pad (2), slide mount pad (2) are installed on horizontal bracket (4) through balance support frame (3), horizontal bracket (4) connect the pantograph, its characterized in that still includes along the vibration converter of carbon slide module (1) length direction installation;
the vibration converter comprises at least one frequency-modulated vibration force damping unit (5), wherein each frequency-modulated vibration force damping unit (5) comprises a resonant spring mechanism (51) and a resonant mass mechanism (52), and the resonant spring mechanism (51) wraps the resonant mass mechanism (52);
each frequency-modulated harmonic vibration force damping unit (5) is arranged below the fixing frame (12); or an inner cavity (13) is arranged in the fixing frame (12), and the frequency modulation resonance power damping unit (5) is arranged in the inner cavity (13);
The plurality of frequency modulation resonance power damping units (5) are arranged in a scattered mode along the length direction of the carbon slide module (1) according to the abnormal abrasion shape (7) of the corrected carbon slide, the abnormal abrasion shape (7) of the carbon slide is an abnormal abrasion shape (7) with different abrasion amounts formed by the abrasion of a net twine along the length direction of the upper surface of the carbon slide and corresponds to a carbon slide modal shape (71), the carbon slide modal shape (71) is a modal shape in the vertical direction, the transverse direction and the torsion under the constraint condition of the operation of the carbon slide, and the carbon slide modal shape (71) corresponds to the corresponding resonance frequency of the carbon slide module (1).
2. The electrified train pantograph carbon slide plate device of claim 1, wherein the resonant spring mechanism (51) is a viscoelastic material having a complex stiffness damping characteristic.
3. The carbon slide plate device of the pantograph of the electrified train according to claim 1, wherein the frequency modulation resonance power damping unit (5) is a granular collision body, and each granular collision body is formed by wrapping a resonance quality mechanism (52) by a resonance spring mechanism (51).
4. The carbon pantograph slide plate device of the electrified train according to claim 1, further comprising a mounting module (6), wherein the mounting module (6) comprises a base plate (61) and a connecting piece (62), the vibration transducer is mounted on the base plate (61), and the base plate (61) is connected with the fixing frame (12) through the connecting piece (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758800.2A CN110450639B (en) | 2019-08-16 | Carbon slide plate device of pantograph of electrified train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758800.2A CN110450639B (en) | 2019-08-16 | Carbon slide plate device of pantograph of electrified train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110450639A CN110450639A (en) | 2019-11-15 |
| CN110450639B true CN110450639B (en) | 2024-06-28 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248109A (en) * | 1997-03-06 | 1998-09-14 | Railway Technical Res Inst | Damping pantograph |
| CN101612895A (en) * | 2009-07-30 | 2009-12-30 | 西南交通大学 | A kind of streamlined high speed pantograph bow |
| CN103343496A (en) * | 2013-07-10 | 2013-10-09 | 铁道第三勘察设计院集团有限公司 | Rail vibration absorber |
| CN109826895A (en) * | 2019-02-26 | 2019-05-31 | 燕山大学 | A kind of granule damper for hollow shaft |
| CN110329080A (en) * | 2019-07-30 | 2019-10-15 | 上海工程技术大学 | A kind of damping pantograph for handing over train for rail |
| CN210970700U (en) * | 2019-08-16 | 2020-07-10 | 上海工程技术大学 | Pantograph carbon slide plate device of electrified train |
| CN211844097U (en) * | 2019-11-21 | 2020-11-03 | 洛阳双瑞橡塑科技有限公司 | Carbon sliding plate with damping vibration damper |
| CN113459816A (en) * | 2021-08-09 | 2021-10-01 | 上海工程技术大学 | Rail transit train carbon slide |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248109A (en) * | 1997-03-06 | 1998-09-14 | Railway Technical Res Inst | Damping pantograph |
| CN101612895A (en) * | 2009-07-30 | 2009-12-30 | 西南交通大学 | A kind of streamlined high speed pantograph bow |
| CN103343496A (en) * | 2013-07-10 | 2013-10-09 | 铁道第三勘察设计院集团有限公司 | Rail vibration absorber |
| CN109826895A (en) * | 2019-02-26 | 2019-05-31 | 燕山大学 | A kind of granule damper for hollow shaft |
| CN110329080A (en) * | 2019-07-30 | 2019-10-15 | 上海工程技术大学 | A kind of damping pantograph for handing over train for rail |
| CN210970700U (en) * | 2019-08-16 | 2020-07-10 | 上海工程技术大学 | Pantograph carbon slide plate device of electrified train |
| CN211844097U (en) * | 2019-11-21 | 2020-11-03 | 洛阳双瑞橡塑科技有限公司 | Carbon sliding plate with damping vibration damper |
| CN113459816A (en) * | 2021-08-09 | 2021-10-01 | 上海工程技术大学 | Rail transit train carbon slide |
Non-Patent Citations (2)
| Title |
|---|
| Experimental research on the non-uniform wear of the carbon strip of the metro pantograph;Luo, X; Cai, C; (...); Yang, DS;PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY;20230818;237(10);第1943-1952页 * |
| 受电弓碳滑板异常磨损与高频振动机理分析;黄超等;铁道标准设计;20210331;第65卷(第03期);全文 * |
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