CN201393123Y - Grounding device of axle suspension bearing box of motor - Google Patents
Grounding device of axle suspension bearing box of motor Download PDFInfo
- Publication number
- CN201393123Y CN201393123Y CN200920063844U CN200920063844U CN201393123Y CN 201393123 Y CN201393123 Y CN 201393123Y CN 200920063844 U CN200920063844 U CN 200920063844U CN 200920063844 U CN200920063844 U CN 200920063844U CN 201393123 Y CN201393123 Y CN 201393123Y
- Authority
- CN
- China
- Prior art keywords
- suspension bearing
- axle suspension
- motor
- bearing box
- carbon brush
- 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
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Abstract
The utility model discloses a grounding device of an axle suspension bearing box of a motor; the axle suspension bearing box of the motor is provided with a thread hole on which a thread sleeve can be screwed; one end of the thread sleeve is screwed on a screw cap and the other end thereof is provided with a thread; the bottom of the thread sleeve is provided with a spring; the upper surface of the spring pushes against a pressing plate; the upper surface of the pressing plate is connected with a carbon brush; one end of the carbon brush extends out of the thread sleeve and pushes against the axle; and a clearance is reserved between the carbon brush and the thread sleeve. The grounding device has simple structure and low cost, can effectively avoid electric erosion of the axle suspension bearing and can improve the safety of the electric locomotive and reduce the maintenance cost.
Description
Technical field
The utility model relates to electric locomotive, particularly the motor axle suspension bearing box earthing device of electric locomotive.
Background technology
In electric locomotive, motor driven systems often adopts half mode that hangs.As shown in Figure 2, whole motor 10 1 ends adopt the motor suspension rod to be suspended on the bogie frame, and an other end adopts motor axle suspension bearing box 7 to be suspended on the axletree 11 by axle suspension bearing (8,9).Axletree 11 is rotatable parts, and axle suspension bearing (8,9) must have in addition lubrication protection of lubricant grease at work, forms an electric capacity like this between the lubricant grease of axle suspension bearing inner ring and outer ring.Motor in operation process since potential difference the electric capacity that the axle suspension bearing Internal and external cycle forms is constantly charged.When the voltage at electric capacity two ends just produces electric discharge phenomena during greater than the puncture voltage of lubricant grease, just have electric current to flow through axle suspension bearing this moment.Like this, motor has formed the current branch along motor axle suspension bearing box, axle suspension bearing, axletree, wheel, rail to the earth in the course of the work.When electric current flows through axle suspension bearing, the heat that electric current produces is easy to cause axle suspension bearing Internal and external cycle, roller or the fusing of raceway topical burn, cause lubricant grease rotten simultaneously, lubricant effect is descended and the useful life of reduction axle suspension bearing, have a strong impact on the safety of electric locomotive and increase maintenance cost.
Present scientific method can't be eliminated axle suspension bearing galvanic corrosion problem fully, and its basic reason is that the principle of electrical motor gearshift drive system generation bearing galvanic corrosion is not also understood fully.In order to prevent the axle suspension bearing galvanic corrosion, present method is that motor is connected with earth connection with locomotive car body, and car body is connected with axletree more then, forms the current branch from the motor to the earth.This motor earthing mode can only the part transfer current, can not solve the bearing galvanic corrosion fully.Perhaps can only take some preventative means to stop now or slow down the axle suspension bearing galvanic corrosion.Be coated with megohmite insulant such as connecting portion at motor and axle suspension bearing box; Internal and external cycle at axle suspension bearing sprays electrical insulating material or the like.Bearing producer has also developed insulation bearing and has prevented the bearing galvanic corrosion as precautionary measures now, but the insulation bearing effect is limited, and it costs an arm and a leg to compare plain bearing, and this brings great cost pressure for electric locomotive manufacturer.
Though also introduced multiple electric locomotive earthing device in the prior art document, these earthing device mainly are to avoid axle box bearing galvanic corrosion problem, do not relate to the research of motor axle suspension bearing box earthing device.
The utility model content
Technical problem to be solved in the utility model is at the prior art deficiency, to provide a kind of not only simple but also economic motor axle suspension bearing box earthing device that can avoid the axle suspension bearing galvanic corrosion.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of motor axle suspension bearing box earthing device, offer the screwed hole that can screw togather thread bush on this motor axle suspension bearing box, one end and the nut of this thread bush screw togather, and the other end is provided with screw thread, and the bottom of this thread bush is provided with spring, the top rest against pressure plate of spring, the top connection carbon brush of pressing plate, an end of this carbon brush stretches out thread bush and is resisted against on the axletree, and leaves certain space between carbon brush and the thread bush.
This spring is a steel spring.
Compared with prior art, the beneficial effect that the utility model had is: the utility model is by forming direct current path between motor axle suspension bearing box and axletree, thereby solved the galvanic corrosion problem of axle suspension bearing effectively, and the utility model simple economy very, improve the useful life of axle suspension bearing greatly, improved the security performance of electric locomotive.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation that the utility model applies to motor axle suspension bearing box drive system.
Embodiment
As shown in Figure 1, the utility model comprises thread bush 2, and an end and the nut 5 of this thread bush 2 screw togather, and an end is provided with the convenient screw thread of installing 6.The bottom of this thread bush 2 is provided with spring 4, and this spring 4 is steel springs preferably.The top rest against pressure plate 3 of spring 4, the top connection carbon brush 1 of pressing plate 3, an end of this carbon brush 1 stretches out thread bush 2, and leaves certain space between carbon brush 1 and the thread bush 2.The utility model integral body is an electrical conductor.
As shown in Figure 2, when the utility model uses, on motor axle suspension bearing box 7, offer a screwed hole 12, the utility model is screwed into this screwed hole 12, carbon brush 1 is resisted against on the axletree 11.When axletree 11 rotated, carbon brush 1 relied on the elastic force of spring 4 to contact with axletree 11 all the time like this.Because carbon brush 1 is a conductor, so just in motor 10 courses of work, has formed along motor axle suspension bearing box, axletree, wheel, rail to the minimum current path of the resistance of the earth.The capacitor discharge that can fully stop axle suspension bearing (8,9) Internal and external cycle to form like this, thereby in the galvanic corrosion problem that has fundamentally solved axle suspension bearing (8,9).
Claims (2)
1, a kind of motor axle suspension bearing box earthing device, it is characterized in that, offer the screwed hole that can screw togather thread bush on this motor axle suspension bearing box, one end and the nut of this thread bush screw togather, and the other end is provided with screw thread, and the bottom of this thread bush is provided with spring, the top rest against pressure plate of spring, the top connection carbon brush of pressing plate, an end of this carbon brush stretches out thread bush and is resisted against on the axletree, and leaves certain space between carbon brush and the thread bush.
2, motor axle suspension bearing box earthing device according to claim 1 is characterized in that this spring is a steel spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920063844U CN201393123Y (en) | 2009-03-27 | 2009-03-27 | Grounding device of axle suspension bearing box of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920063844U CN201393123Y (en) | 2009-03-27 | 2009-03-27 | Grounding device of axle suspension bearing box of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393123Y true CN201393123Y (en) | 2010-01-27 |
Family
ID=41599944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920063844U Expired - Lifetime CN201393123Y (en) | 2009-03-27 | 2009-03-27 | Grounding device of axle suspension bearing box of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201393123Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969578A (en) * | 2012-11-23 | 2013-03-13 | 保定天威集团有限公司 | Grounding method and device used for cylinder girth welding |
| CN108487746A (en) * | 2018-06-26 | 2018-09-04 | 陆建兴 | Lifting cross sliding type parking systems driving device |
| CN111137181A (en) * | 2020-01-02 | 2020-05-12 | 中车株洲电力机车有限公司 | Grounding device, bogie and rail transit rolling stock |
-
2009
- 2009-03-27 CN CN200920063844U patent/CN201393123Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969578A (en) * | 2012-11-23 | 2013-03-13 | 保定天威集团有限公司 | Grounding method and device used for cylinder girth welding |
| CN108487746A (en) * | 2018-06-26 | 2018-09-04 | 陆建兴 | Lifting cross sliding type parking systems driving device |
| CN111137181A (en) * | 2020-01-02 | 2020-05-12 | 中车株洲电力机车有限公司 | Grounding device, bogie and rail transit rolling stock |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |