CN203813041U - Electric locomotive grounding device - Google Patents
Electric locomotive grounding device Download PDFInfo
- Publication number
- CN203813041U CN203813041U CN201420109572.9U CN201420109572U CN203813041U CN 203813041 U CN203813041 U CN 203813041U CN 201420109572 U CN201420109572 U CN 201420109572U CN 203813041 U CN203813041 U CN 203813041U
- Authority
- CN
- China
- Prior art keywords
- brush
- carbon brush
- grounding
- brush holder
- carbon brushes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 151
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 151
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 71
- 229910052802 copper Inorganic materials 0.000 claims abstract description 71
- 239000010949 copper Substances 0.000 claims abstract description 71
- 244000185238 Lophostemon confertus Species 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 description 12
- 238000010891 electric arc Methods 0.000 description 5
- 238000002679 ablation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model relates to the field of grounding devices, and especially relates to a grounding device used on an electric locomotive. The electric locomotive grounding device comprises a brush box, a brush holder fixed in the brush box, and carbon brushes disposed on the brush holder; the tail end of each carbon brush is connected with the brush holder through a flexible wire; the brush holder is provided with cable connecting terminals used for conduction; the carbon brushes disposed on the brush holder comprise grounding carbon brushes and arc extinguishing carbon brushes; and springs used for enabling carbon brush heads to be tightly contacted with a circular friction copper disc are disposed between the brush holder and the bottom portions of the grounding carbon brushes and the arc extinguishing carbon brushes. According to the electric locomotive grounding device, the grounding carbon brushes and the arc extinguishing carbon brushes are disposed at different areas of the brush holder, different pressure is respectively applied between the grounding carbon brushes and the friction copper disc and between the arc extinguishing carbon brushes and the friction copper disc, so that the grounding carbon brushes have longer service lifetimes, and arc striking and burning which are caused by high voltage between the grounding carbon brushes and the friction copper disc due to the fact that the grounding carbon brushes are separated from the friction copper disc when the grounding device is under a severe vibration condition can be prevented.
Description
Technical field
The utility model relates to earthing device field, relates in particular to the earthing device using in a kind of electric locomotive.
Background technology
Rail electric locomotive is imported electric locomotive by earthing device electric current by receiving end, imports the earth through axletree, wheel, rail, and the electric locomotive of guarantee rail is normally worked.The operation principle of rail electric locomotive earthing device is to contact with the friction copper dish on rotation axletree by the fixing carbon brush of relative position, and electric current is flowed through, and the two forms loop.In order to ensure close contact between the friction copper dish on the fixing carbon brush of relative position and rotation axletree, generally by spring, carbon brush is applied to thrust and be achieved.
Carbon brush with the useful life (abrasion loss) of friction copper dish except outside the Pass having with the selection attribute of the two, the relative shift also and between the two, and guarantee the two close contact and the thrust that applies is closely related.When thrust one timing, relative shift between the two larger (carbon brush walk on friction copper dish end face path longer), in the unit interval, carbon brush is larger with the abrasion loss of the copper dish that rubs, and useful life is shorter; When carbon brush and relative shift one timing of friction copper dish, the thrust applying is larger, and in the unit interval, carbon brush is larger with the abrasion loss of friction copper dish, and useful life is shorter; Otherwise, when thrust one timing, larger the closer to the outer edge abrasion loss of friction copper card; When carbon brush and relative shift one timing of friction copper dish, the thrust applying is less, and in the unit interval, carbon brush is less with the abrasion loss of friction copper dish, and useful life is longer.In order to ensure rail electric locomotive can be during certain in the normal work maintenance of not stopping transport, require carbon brush and the copper dish that rubs has sufficiently long useful life, this is difficult for excessive with regard to the thrust that requires to apply on carbon brush, in certain zone of reasonableness.
The operating voltage of rail electric locomotive is extremely tens of kilovolts of thousands of volts, and operating current is that tens of amperes are to hundreds of amperes.While normally work in order to ensure earthing device, can not flow through and produce a large amount of thermal conductances and cause sharply temperature rise generation ablation due to tens of ampere to the electric current of hundreds of amperes, cause the lubricating status between carbon brush and friction copper dish to worsen rapidly, significantly reduce the useful life of earthing device, require earthing device should there is less resistance and contact resistance, the total resistance value of the earthing device of normal work generally only has several milliohms, and the voltage drop of generation is only also three ten-day period of hot season spy.Resistance and the contact resistance of the earthing device under static state, using at present meet the requirement of working under above-mentioned large electric current operating mode completely.But, rail electric locomotive unavoidably can jolt and produce vibration at running, because the thrust applying on carbon brush is a determined value, if oscillation intensity is enough large, still can cause carbon brush to separate with friction copper dish, now contact the circuit being communicated with just in off state by carbon brush with friction copper dish, voltage between carbon brush and friction copper dish can transit to thousands of volts at once to tens of kilovolts, and the operating voltage of namely rail electric locomotive is all loaded between the carbon brush and friction copper dish of earthing device.Distance between the carbon brush separating under judder state and friction copper dish is very little, between the two, there is again so high voltage, very easily produce with this understanding electric arc generation ablation, cause the lubricating status between carbon brush and friction copper dish to worsen rapidly, significantly reduce the useful life of earthing device.Therefore, for reduce carbon brush and friction copper dish vibrational state issue estranged from, need to strengthen the thrust between the two, and the abrasion that strengthen thrust and can increase carbon brush and friction copper dish, shorten the useful life of earthing device.As can be seen here, extend the useful life of carbon brush and friction copper dish, and eliminate between the two and produce the often contradiction face in mutual opposition of electric arc, although reducing thrust can increase the service life, but can increase the possibility that produces electric arc, otherwise increase pressure and can reduce the possibility that produces electric arc, but can reduction of service life.
utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and a kind of long service life is provided, and conducts electricity very well, and can also under judder operating mode, avoid producing the electric locomotive earthing device that draws electric ablation.
For achieving the above object, the utility model provides following technical scheme:
A kind of electric locomotive earthing device, comprise brush box, be fixed on the brush holder in brush box and be arranged on the carbon brush on brush holder, carbon brush end is connected with brush holder by flexible cord, brush holder is provided with the cable connecting terminal for conducting electricity, the carbon brush being arranged on brush holder comprises grounding carbon brush and extinguishing arc carbon brush, is all provided with the spring that makes carbon brush head and circular friction copper dish close contact between the bottom of grounding carbon brush and extinguishing arc carbon brush and brush holder.
In above-mentioned electric locomotive earthing device, the center of described brush holder is porose, and extinguishing arc carbon brush is arranged in the hole at brush holder center, and multiple grounding carbon brushs are evenly arranged on the circumference taking brush holder center as the center of circle.Extinguishing arc carbon brush is arranged on the center of brush holder, can reduce the relative shift of extinguishing arc carbon brush and friction copper dish as far as possible, reduces abrasion loss, strengthens useful life, and extinguishing arc carbon brush also can be installed on other position of brush holder in addition.
In above-mentioned electric locomotive earthing device, described grounding carbon brush at least arranges two, and is evenly arranged on the circumference taking brush holder center as the center of circle.
In above-mentioned electric locomotive earthing device, between described grounding carbon brush bottom and brush holder, be provided with the stainless steel constant force spring that makes grounding carbon brush head and circular friction copper dish close contact; Between extinguishing arc carbon brush bottom and brush holder, be provided with the Compress Spring that makes extinguishing arc carbon brush head and circular friction copper dish close contact.
In above-mentioned electric locomotive earthing device, the end of described grounding carbon brush and extinguishing arc carbon brush is connected with brush holder by flexible cord respectively, and grounding carbon brush provides the first path for earth current, and extinguishing arc carbon brush provides alternate path for earth current.
The arc extinguishing method of above-mentioned electric locomotive earthing device, between grounding carbon brush and friction copper dish, between extinguishing arc carbon brush and friction copper dish, apply respectively different pressure, the pressure between described grounding carbon brush and friction copper dish is less than the pressure between extinguishing arc carbon brush and friction copper dish.
In the arc extinguishing method of above-mentioned electric locomotive earthing device, the conductivity of described grounding carbon brush is higher than extinguishing arc carbon brush, and electric conductivity relatively better grounding carbon brush is conducive to control the flow through caloric value of carbon brush of operating current, avoids occurring scaling loss.
In the arc extinguishing method of above-mentioned electric locomotive earthing device, the resistance to wear of described extinguishing arc carbon brush is higher than grounding carbon brush, and anti-wear performance relatively better extinguishing arc carbon brush is conducive to be controlled at the abrasion loss of concurrent raw caused by relative motion of contacting with friction copper dish under relatively larger pressure.
Because the relative motion amount between grounding carbon brush and friction copper dish is greater than the relative motion amount between extinguishing arc carbon brush and friction copper dish, the utility model in use, the pressure being applied between grounding carbon brush and friction copper dish is less than the pressure being applied between extinguishing arc carbon brush and friction copper dish, between grounding carbon brush and friction copper dish, apply like this when less thrust can be guaranteed grounding carbon brush with the raw relatively large relative motion of friction copper hair updo and also only produce less abrasion loss, the useful life that strengthens grounding carbon brush; Between extinguishing arc carbon brush and friction copper dish, apply larger thrust and can guarantee that extinguishing arc carbon brush also can not separate with friction copper dish under judder operating mode.Even if so grounding carbon brush, with friction copper dish because moment loose contact occurs the reasons such as vibration, also can pass through extinguishing arc carbon brush to its arc extinguishing, avoid earthing device produce electric arc and ablation phenomen occurs.
compared with prior art, the beneficial effects of the utility model:the utility model is by arranging grounding carbon brush and extinguishing arc carbon brush in the zones of different of brush holder, simultaneously between grounding carbon brush and friction copper dish, between extinguishing arc carbon brush and friction copper dish, apply respectively the pressure varying in size, thereby being grounded carbon brush both had compared with the long life, can avoid again earthing device under judder operating mode due to after grounding carbon brush separates with friction copper dish, between the two, produce high voltage generation starting the arc scaling loss, thereby the situation that causes rubbing surface to worsen significantly shortening the two useful life occurs.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the end view of Fig. 1.
Mark in figure: 1-brush box, 2-brush holder, 31-grounding carbon brush, 32-extinguishing arc carbon brush, 41-stainless steel constant force spring, 42-Compress Spring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In order to make object, technical scheme and the advantage of utility model clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
embodiment 1
As accompanying drawing 1, shown in accompanying drawing 2, the present embodiment electric locomotive earthing device comprises brush box 1, be fixed on the brush holder 2 in brush box 1 and be arranged on grounding carbon brush 31 and the extinguishing arc carbon brush 32 on brush holder, the end of grounding carbon brush 31 and extinguishing arc carbon brush 32 is connected with brush holder 2 by flexible cord, described brush holder 2 is provided with the cable connecting terminal for conducting electricity, the center of brush holder 2 arranges porose, extinguishing arc carbon brush 32 is arranged in the hole at brush holder center, three grounding carbon brushs 31 are evenly arranged on taking brush holder 2 centers on the circumference in the center of circle, between described grounding carbon brush 31 bottoms and brush holder 2, be provided with the stainless steel constant force spring 41 that makes grounding carbon brush 31 heads and circular friction copper dish close contact, between extinguishing arc carbon brush 32 bottoms and brush holder 2, be provided with the Compress Spring 42 that makes extinguishing arc carbon brush 32 heads and circular friction copper dish close contact.
The arc extinguishing method of electric locomotive earthing device, between grounding carbon brush 31 in above-mentioned earthing device and friction copper dish, between extinguishing arc carbon brush 32 and friction copper dish, apply respectively different pressure, the pressure between described grounding carbon brush 31 and friction copper dish is less than the pressure between extinguishing arc carbon brush 32 and friction copper dish.The pressure that is applied to particularly grounding carbon brush 31 and rub between copper dish is greater than 10kPa and is less than 40kPa, be applied to pressure between extinguishing arc carbon brush 32 and friction copper dish and be greater than 10kPa and be less than that 40kPa(is above-mentioned to be applied between grounding carbon brush 31 and friction copper dish, extinguishing arc carbon brush 32 and the pressure that rubs between copper dish are with reference to machinery industry standard JB/T4003-2001 " brush for electromachine ").The conductivity of grounding carbon brush 31 is higher than extinguishing arc carbon brush 32 in addition, and electric conductivity relatively better grounding carbon brush 31 is conducive to control the flow through caloric value of carbon brush of operating current, avoids occurring scaling loss; The resistance to wear of extinguishing arc carbon brush 32 is higher than grounding carbon brush 31, and anti-wear performance relatively better extinguishing arc carbon brush 32 is conducive to be controlled at the abrasion loss of concurrent raw caused by relative motion of contacting with friction copper dish under relatively larger pressure.
Owing to taking brush holder 2 centers, three grounding carbon brushs 31 being evenly set on the circumference in the center of circle, extinguishing arc carbon brush 32 is installed in addition in the centre bore of brush holder 2, in the time that earthing device is worked, the pressure being applied between grounding carbon brush 31 and friction copper dish is less than the pressure being applied between extinguishing arc carbon brush 32 and friction copper dish.Also only produce less abrasion loss, the useful life that strengthens grounding carbon brush applying between grounding carbon brush 31 and friction copper dish when less thrust can be guaranteed grounding carbon brush 31 with the raw relatively large relative motion of friction copper hair updo; Guarantee under judder operating mode applying larger thrust between extinguishing arc carbon brush 32 and friction copper dish, even if after grounding carbon brush 31 separates with friction copper dish, extinguishing arc carbon brush 32 does not also separate with friction copper dish, can normally conduct electricity.Large for thrust between extinguishing arc carbon brush 32 and friction copper dish in addition, cause thus extinguishing arc carbon brush 32 high with respect to the wear extent of grounding carbon brush 31, extinguishing arc carbon brush 32 can adopt the material manufacture that resistance to wear is high, simultaneously because the relative motion in a small amount between extinguishing arc carbon brush 32 and friction copper dish also only produces less abrasion loss, so can be grounded carbon brush 31 and extinguishing arc carbon brush 32 all had compared with the long life, the existence of extinguishing arc carbon brush 32 can avoid earthing device under judder operating mode due to after grounding carbon brush 31 separates with friction copper dish, between the two, produce high voltage generation starting the arc scaling loss, thereby the situation that causes rubbing surface to worsen significantly shortening the two useful life occurs.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. an electric locomotive earthing device, comprise brush box (1), be fixed on the brush holder (2) in brush box (1) and be arranged on the carbon brush on brush holder, carbon brush end is connected with brush holder (2) by flexible cord, brush holder (2) is provided with the cable connecting terminal for conducting electricity, it is characterized in that: the carbon brush being arranged on brush holder comprises grounding carbon brush (31) and extinguishing arc carbon brush (32), between the bottom of grounding carbon brush (31) and extinguishing arc carbon brush (32) and brush holder (2), be all provided with the spring that makes carbon brush head and circular friction copper dish close contact.
2. electric locomotive earthing device according to claim 1, it is characterized in that: the center of described brush holder (2) is porose, extinguishing arc carbon brush (32) is arranged in the hole at brush holder center, and multiple grounding carbon brushs (31) are evenly arranged on taking brush holder (2) center on the circumference in the center of circle.
3. electric locomotive earthing device according to claim 2, is characterized in that: described grounding carbon brush (31) at least arranges two, and is evenly arranged on taking brush holder (2) center on the circumference in the center of circle.
4. electric locomotive earthing device according to claim 1 and 2, is characterized in that: between described grounding carbon brush (31) bottom and brush holder (2), be provided with the stainless steel constant force spring (41) that makes grounding carbon brush (31) head and circular friction copper dish close contact; Between extinguishing arc carbon brush (32) bottom and brush holder (2), be provided with the Compress Spring (42) that makes extinguishing arc carbon brush (32) head and circular friction copper dish close contact.
5. electric locomotive earthing device according to claim 1, is characterized in that: the end of described grounding carbon brush (31) and extinguishing arc carbon brush (32) is connected with brush holder (2) by flexible cord respectively.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109572.9U CN203813041U (en) | 2014-03-12 | 2014-03-12 | Electric locomotive grounding device |
| PCT/CN2014/075366 WO2015135235A1 (en) | 2014-03-12 | 2014-04-15 | Electric locomotive grounding device and arc suppression method |
| RU2016139982U RU170593U1 (en) | 2014-03-12 | 2014-04-15 | ELECTRIC TRUCK EARTHING DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109572.9U CN203813041U (en) | 2014-03-12 | 2014-03-12 | Electric locomotive grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813041U true CN203813041U (en) | 2014-09-03 |
Family
ID=51451757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109572.9U Expired - Lifetime CN203813041U (en) | 2014-03-12 | 2014-03-12 | Electric locomotive grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104338A (en) * | 2017-05-19 | 2017-08-29 | 北京中航路通科技有限公司 | The frictional disk that a kind of earthing or grounding means is used |
| CN107453060A (en) * | 2017-07-28 | 2017-12-08 | 中车株洲电力机车研究所有限公司 | A kind of track earthing or grounding means |
| CN113103930A (en) * | 2021-04-15 | 2021-07-13 | 四川城际轨道交通材料有限责任公司 | End cover for rail train grounding device and preparation method thereof |
-
2014
- 2014-03-12 CN CN201420109572.9U patent/CN203813041U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104338A (en) * | 2017-05-19 | 2017-08-29 | 北京中航路通科技有限公司 | The frictional disk that a kind of earthing or grounding means is used |
| CN107453060A (en) * | 2017-07-28 | 2017-12-08 | 中车株洲电力机车研究所有限公司 | A kind of track earthing or grounding means |
| CN113103930A (en) * | 2021-04-15 | 2021-07-13 | 四川城际轨道交通材料有限责任公司 | End cover for rail train grounding device and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |