CN103022847A - Electric brush for direct current traction motor - Google Patents
Electric brush for direct current traction motor Download PDFInfo
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- CN103022847A CN103022847A CN201210574777XA CN201210574777A CN103022847A CN 103022847 A CN103022847 A CN 103022847A CN 201210574777X A CN201210574777X A CN 201210574777XA CN 201210574777 A CN201210574777 A CN 201210574777A CN 103022847 A CN103022847 A CN 103022847A
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- brush
- cushion block
- traction motor
- copper
- carbon brush
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Abstract
The invention discloses an electric brush for a direct current traction motor. The electric brush comprises two pieces of carbon brushes (1), four annealed copper braided wires (2) and a triangular cushion block (3). The triangular cushion block (3) is disposed above the two pieces of carbon brushes (1). The triangular cushion block (3) is provided with through holes (31) for the annealed copper braided wires which penetrate through the trough holes (31) respectively to be fixedly connected with carbon brushes (1). Due to the fact that the mechanism with two pieces of carbon brushes coordinating with the triangular cushion block is used, reversing of the motor is improved effectively, good afflux performance is provided, sparks are limited in an acceptable range, energy loss is low, a layer of uniform, appropriate and stable oxidation film can be formed on a commutator surface rapidly during operation, the service life of electric brush is further prolonged, the unhealthy phenomenon of an original integral-structured motor can be eliminated or reduced, and reliable and safe operation of the motor is guaranteed.
Description
Technical field
The present invention relates to the traction electric machine technical field, more particularly, particularly a kind of dc traction motor brush.
Background technology
Brush is the building block of direct current machine key, is the sliding contact body of other outer motor conduction currents of deratization dragon formula motor.In direct current machine, it is also being undertaken the alternating electromotive force of responding in the armature winding, the task of commutate (rectification).Practice shows, the motor reliability of operation is decided by the structural design of brush to a great extent.
The electric locomotive of bearing goods transportation on the railway, having many is that direct current machine provides traction power for it.At present, the brush that adopts is to be installed in four apertures at two carbon brush piece tops by the four soft litzendraht wire of copper bottoms, by filling glue, is fixed in the carbon brush, it extracts the regulation that pulling force is not less than the brush standard, and two carbon brush pieces are by gluing and rubber blanket and backing plate is bonding is integral.The brush of this structure, the initial stage and the environmental working condition (weather that surpass ten thousand tons of operations in load, line slope, when abnormal conditions on every side etc.) relatively quite a lot of, the commutation of motor, the performances such as spark meet the demands, but along with the lengthening (about 200,000 kilometers of locomotive operations) of cyclic loading and the arrival of hot weather, the working face abrasion of brush bottom are very fast, the frequent pigtail phenomenon of breaking that occurs of brush brush pigtail, horn mouth appears in the brush box square hole, and motor commutation and permission spark scope are unstable, there is the phenomenon of blackout on the surface of commutator, Service Life of Carbon Brush shortens, and changes frequent.The reason that causes this situation to occur is at first considered the mechanical instability that commutator causes under centrifugal force and thermal energy consumption effect, namely the commutator face profile is not round.In addition, such brush also can occur that there are 2～3 abrasion interfaces brightless dark face zone, carbon brush bottom surfaces, two carbon brush abrasions are unequal and cause two carbon brush bottom working faces can not arrive freely the suitable position of commutator face and the phenomenons such as contacting break-in with commutator face that can not fit like a glove at two carbon brush bottom working faces.On the other hand, the scroll spring pressure that carbon brush is subject to often focuses on local location, so that motor commutation is unstable, the electric current distribution is unbalanced, the brush local vibration is concentrated, and just shows above-mentioned bad phenomenon.
In sum, how to slow down the appearance of the undesirable condition of prior art, satisfy motor entrucking Operational requirements, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of dc traction motor brush, and this brush has improved the commutation of motor effectively, has good afflux performance, spark is suppressed in allowed limits, and energy consumption is little, safe and reliable to operation.
For solving the problems of the technologies described above, the invention provides a kind of dc traction motor brush, described brush comprises: two carbon brush, four soft litzendraht wires of copper and triangle cushion block, described triangle cushion block is arranged on the top of two described carbon brush, described triangle cushion block offers the soft litzendraht wire perforation of copper, and four soft litzendraht wires of described copper pass respectively the soft litzendraht wire perforation of described copper and are fixedly linked with described carbon brush.
Further, two described carbon brush are close to setting, and two described carbon brush are processed with rake to opposite side respectively, and positive wedge shape is processed in the lower end of described triangle cushion block, and described positive wedge shape and two described rakes be movable contact in consistent manner mutually.
Further, the inclined plane of described rake is in vertical direction with 60 ° of angles, and two lozenges angles of described positive wedge shape are 120 °.
Further, be processed with the soft litzendraht wire fixation holes of copper on the described carbon brush, the lower end of the soft litzendraht wire of described copper is fixed in the soft litzendraht wire fixation holes of described copper by the graphite powder filling, and uses the resin sealing.
Further, the exposed part of four soft litzendraht wires of described copper has wrapped sheath.
Further, described brush comprises insulating pad and rubber blanket, described rubber blanket is arranged on the upper surface of described triangle cushion block, and described insulating pad is arranged on the described rubber blanket, and described insulating pad, described rubber blanket and described triangle cushion block are integral by gluing is bonding.
Further, the both sides of described insulating pad are provided with block.
Further, be provided with the abrasion line on the lateral surface of described carbon brush, described abrasion line uses lacquer to apply and forms.
The invention has the beneficial effects as follows:
The mechanism that two carbon brush of employing of the present invention match with a triangle cushion block, after two divided opening of carbon brush of division, it can fully independently be moved, the bottom working face of every division carbon brush can freely be close to commutator face, abrasion evenly, the contact wearing course can reach more than 80%, and not affected by adjacent sheet, even two rates of wear that divide between the brush are different, under correct brush pressure effect, the electric current distributed uniform between two carbon brush can maintain in the reasonable limit value, commutator face temperature rise and brush temperature rise are constantly raise, just can keep all the time the life-span of brush.Even bad working environments causes commutator face profile distortion, brush bottom working face can not occur wearing away the interface more than two yet, all plays a part crucial to performances such as the commutation of motor, sparks.Like this, replace former integrally-built brush with the brush of this structure, can effectively improve the commutation of motor, have good afflux performance, spark is suppressed in allowed limits, and energy loss is little, in the running, can commutator face form quickly one deck evenly, appropriateness and stable oxide-film, further improve Service Life of Carbon Brush, stop or reduce the bad phenomenon that former overall structure motor shows occurs, thereby guarantee that motor moves reliable and securely.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation that the dc traction motor of the embodiment of the invention dissects with the brush side direction;
Fig. 2 is the dc traction motor of embodiment of the invention brush forward structure schematic diagram;
Fig. 3 is the structural representation that the dc traction motor of the embodiment of the invention dissects with the side direction of carbon brush in the brush;
Fig. 4 is the structural representation that the dc traction motor of the embodiment of the invention dissects with the side direction of brush intermediate cam cushion block;
Fig. 5 is the dc traction motor of the embodiment of the invention with the mounting structure schematic diagram of the soft litzendraht wire of copper in the brush and joint.
Respectively marking represented technical characterictic in the accompanying drawing is:
1, carbon brush, 11, rake, 12, the soft litzendraht wire fixation holes of copper, 13, the abrasion line, 2, the soft litzendraht wire of copper, 3, the triangle cushion block, 31, the soft litzendraht wire perforation of copper, 4, sheath, 5, insulating pad, 51, block, 6, rubber blanket.
Embodiment
Core of the present invention is for providing a kind of dc traction motor brush, and this brush has improved the commutation of motor effectively, has good afflux performance, spark is suppressed in allowed limits, and energy consumption is little, safe and reliable to operation.
In order to make those skilled in the art understand better technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The present embodiment provides a kind of dc traction motor brush, please in conjunction with referring to figs. 1 to Fig. 5, this brush comprises: two carbon brush 1, four soft litzendraht wires 2 of copper and triangle cushion block 3, triangle cushion block 3 is arranged on the top of two carbon brush 1, triangle cushion block 3 offers 31, four soft litzendraht wires 2 of copper of the soft litzendraht wire of copper perforation and passes respectively the soft litzendraht wire perforation 31 of copper and be fixedly linked with carbon brush 1.Preferably, be processed with accordingly four soft litzendraht wire fixation holes 12 of copper on the carbon brush 1, the lower end of the soft litzendraht wire 2 of each root copper is fixed in the soft litzendraht wire fixation holes 12 of copper by the graphite powder filling, and use the resin sealing, employed graphite powder is the import graphite powder, and employed resin is the import resin.After being fixedly connected with like this, extract the regulation that pulling force is not less than the brush standard.Preferably, the exposed part of four soft litzendraht wires 2 of copper has wrapped sheath 4.
Two carbon brush 1 are close to setting, and two carbon brush 1 are processed with rake 11 to opposite side respectively, and positive wedge shape is processed in the lower end of triangle cushion block 3, and triangle cushion block 3 and two rakes 11 be movable contact in consistent manner mutually.Preferably, the inclined plane of rake 11 is in vertical direction with 60 ° of angles, and two lozenges angles of triangle cushion block 3 lower ends are 120 °.The brush of this structure, can effectively improve the commutation of motor, has good afflux performance, spark is suppressed in allowed limits, and energy loss is little, in the running, can commutator face form quickly one deck evenly, appropriateness and stable oxide-film, further improve Service Life of Carbon Brush.
Brush also comprises insulating pad 5 and rubber blanket 6, and rubber blanket 6 is arranged on the upper surface of triangle cushion block 3, and insulating pad 5 is arranged on the rubber blanket 6, and insulating pad 5, rubber blanket 6 and triangle cushion block 3 are integral by gluing is bonding.Like this, be convenient to the transmission of pressure.
The both sides of insulating pad 5 are provided with block 51, make spring end finger off normal to prevent that motor is in operation to vibrate.Be provided with abrasion line 13 on the lateral surface of carbon brush 1, abrasion line 13 uses lacquer to apply and forms.
The effect principle of brush of the present invention is: after two divided opening of carbon brush of division, it can fully independently be moved, the bottom working face of every division carbon brush can freely be close to commutator face, abrasion evenly, the contact wearing course can reach more than 80%, and not affected by adjacent sheet, even two rates of wear that divide between the brush are different, under correct brush pressure effect, electric current distributed uniform between two carbon brush, can maintain in the reasonable limit value, commutator face temperature rise and brush temperature rise are constantly raise, just can keep all the time the life-span of brush.Even bad working environments causes commutator face profile distortion, brush bottom working face can not occur wearing away the interface more than two yet, all plays a part crucial to performances such as the commutation of motor, sparks.Like this, replace former integrally-built brush with the brush of this structure, can effectively improve the commutation of motor, have good afflux performance, spark is suppressed in allowed limits, and energy loss is little, in the running, can commutator face form quickly one deck evenly, appropriateness and stable oxide-film, further improve Service Life of Carbon Brush, stop or reduce the bad phenomenon that former overall structure motor shows occurs, thereby guarantee that motor moves reliable and securely.
Above a kind of dc traction motor provided by the present invention is described in detail with brush.Used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.
Claims (8)
1. dc traction motor brush, it is characterized in that, described brush comprises: two carbon brush (1), four soft litzendraht wires of copper (2) and triangle cushion block (3), described triangle cushion block (3) is arranged on the top of two described carbon brush (1), described triangle cushion block (3) offers the soft litzendraht wire perforation of copper (31), and four soft litzendraht wires of described copper (2) pass the soft litzendraht wire perforation of described copper (31) and are fixedly linked with described carbon brush (1).
2. dc traction motor brush according to claim 1, it is characterized in that, two described carbon brush (1) are fitted and are arranged, two described carbon brush (1) are processed with rake (11) to opposite side respectively, positive wedge shape is processed in the lower end of described triangle cushion block (3), and described triangle cushion block (3) lower end and two described rakes (11) are movable contact in consistent manner mutually.
3. dc traction motor brush according to claim 2 is characterized in that, the inclined plane of described rake (11) is in vertical direction with 60 ° of angles, and two lozenges angles of described triangle cushion block (3) are 120 °.
4. dc traction motor brush according to claim 3, it is characterized in that, be processed with the soft litzendraht wire fixation holes of copper (12) on the described carbon brush (1), the lower end of the soft litzendraht wire of described copper (2) is fixed in the soft litzendraht wire fixation holes of described copper (12) by the graphite powder filling, and uses the resin sealing.
5. dc traction motor brush according to claim 4 is characterized in that, the exposed part of four soft litzendraht wires of described copper (2) has wrapped sheath (4).
6. each described dc traction motor brush in 5 according to claim 1, it is characterized in that, described brush also comprises insulating pad (5) and rubber blanket (6), described rubber blanket (6) is arranged on the upper surface of described triangle cushion block (3), described insulating pad (5) is arranged on the described rubber blanket (6), and described insulating pad (5), described rubber blanket (6) and described triangle cushion block (3) are integral by gluing is bonding.
7. dc traction motor brush according to claim 6 is characterized in that, the both sides of described insulating pad (5) are provided with block (51).
8. each described dc traction motor brush in 5 according to claim 1 is characterized in that, be provided with abrasion line (13) on the lateral surface of described carbon brush (1), described abrasion line (13) uses lacquer to apply and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574777XA CN103022847A (en) | 2012-12-26 | 2012-12-26 | Electric brush for direct current traction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574777XA CN103022847A (en) | 2012-12-26 | 2012-12-26 | Electric brush for direct current traction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103022847A true CN103022847A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210574777XA Pending CN103022847A (en) | 2012-12-26 | 2012-12-26 | Electric brush for direct current traction motor |
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| Country | Link |
|---|---|
| CN (1) | CN103022847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038149A (en) * | 2018-08-16 | 2018-12-18 | 沧州华海风电设备科技技术开发有限公司 | Service life scale brush |
| CN110474495A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of anti-vibration dome armature structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565169Y (en) * | 2002-08-07 | 2003-08-06 | 林培松 | Electric machine carbon brush device with automatic unit for indicating brush wear |
| RU2274935C1 (en) * | 2004-07-22 | 2006-04-20 | Федеральное государственное унитарное предприятие "Научно-исследовательский и проектно-технологический институт электроугольных изделий" (ФГУП "НИИЭИ") | Electrical machine brush |
| CN201319465Y (en) * | 2008-12-11 | 2009-09-30 | 上海摩根碳制品有限公司 | Electric brush used for high-speed pulling motor |
| CN201319464Y (en) * | 2008-12-11 | 2009-09-30 | 上海摩根碳制品有限公司 | Electric brush used for pulling motor |
| CN201656212U (en) * | 2010-03-04 | 2010-11-24 | 上海摩根碳制品有限公司 | Electrical brush |
-
2012
- 2012-12-26 CN CN201210574777XA patent/CN103022847A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565169Y (en) * | 2002-08-07 | 2003-08-06 | 林培松 | Electric machine carbon brush device with automatic unit for indicating brush wear |
| RU2274935C1 (en) * | 2004-07-22 | 2006-04-20 | Федеральное государственное унитарное предприятие "Научно-исследовательский и проектно-технологический институт электроугольных изделий" (ФГУП "НИИЭИ") | Electrical machine brush |
| CN201319465Y (en) * | 2008-12-11 | 2009-09-30 | 上海摩根碳制品有限公司 | Electric brush used for high-speed pulling motor |
| CN201319464Y (en) * | 2008-12-11 | 2009-09-30 | 上海摩根碳制品有限公司 | Electric brush used for pulling motor |
| CN201656212U (en) * | 2010-03-04 | 2010-11-24 | 上海摩根碳制品有限公司 | Electrical brush |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038149A (en) * | 2018-08-16 | 2018-12-18 | 沧州华海风电设备科技技术开发有限公司 | Service life scale brush |
| CN110474495A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of anti-vibration dome armature structure |
| CN110474495B (en) * | 2019-09-24 | 2024-05-14 | 上海电气集团上海电机厂有限公司 | Vibration-proof arc-shaped top armature structure |
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Application publication date: 20130403 |