CN211391288U - Engineering vehicle axle head earthing device - Google Patents
Engineering vehicle axle head earthing device Download PDFInfo
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- CN211391288U CN211391288U CN201922363995.9U CN201922363995U CN211391288U CN 211391288 U CN211391288 U CN 211391288U CN 201922363995 U CN201922363995 U CN 201922363995U CN 211391288 U CN211391288 U CN 211391288U
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Abstract
The utility model provides an engineering vehicle axle head earthing device, including carbon brush, brush box, spring, enclosing cover, contact disc and insulating part, the carbon brush sets up in the brush box, and the copper pigtail line of carbon brush passes through the bolt to be connected with the brush box, the enclosing cover passes through the bolt to be connected with the brush box and is equipped with sealed the pad between the two, the spring mounting is in the cavity that is formed by enclosing cover and brush box, the enclosing cover is connected to the one end of spring and the other end passes through the spring housing to be connected with the carbon brush, the carbon brush links to each other with the contact disc, the brush box covers through locking bolted connection in the outer end of shaft, insulating part sets up between locking bolt and brush box and the outer end cover of shaft, is equipped with O type sealing washer between insulating part and the outer end cover of. The engineering vehicle axle end grounding device can meet the requirements of narrow axle box space of an engineering vehicle and installation of a smaller axle end part; meanwhile, the device has the characteristics of compact structure, convenience in installation, large rated working current, adaptation to different axial play amounts and the like.
Description
Technical Field
The utility model relates to a transportation machinery technical field especially relates to an engineering truck axle head earthing device.
Background
Vehicle electrical control systems are typically affected by high voltage surges. The occurrence of high voltage surges directly affects the electrical control devices, even causing damage to critical components such as the switchboard, and also poses a safety threat to the personnel on board the vehicle.
The axle end grounding device is arranged at the axle end of the bogie and is used for improving the conductive performance of the vehicle, preventing the axle box and the bearing from electric corrosion and improving the reliability of the vehicle.
At present, the axle end of the rail engineering locomotive is grounded by a simple grounding rod, the resistivity is high, the contact is unreliable, and the bearing in the axle box cannot be effectively protected from electric corrosion. In order to meet the higher and higher safety requirements of rail transit and the requirements of narrow installation space and larger working current of a rail engineering locomotive axle end, a compact and efficient grounding device for the rail engineering locomotive axle end is developed.
Therefore, a novel technology of the engineering vehicle axle end grounding device is urgently needed in the industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compact structure, simple to operate, can adapt to the axle head earthing device of different axial displacement volume.
In order to realize the above-mentioned purpose, the utility model provides an engineering truck axle head earthing device, including carbon brush, brush box, spring, enclosing cover, contact disc and insulating part, the carbon brush sets up in the brush box, and the copper pigtail line of carbon brush passes through the bolt to be connected with the brush box, the enclosing cover passes through the bolt to be connected with the brush box and is equipped with sealed the pad between the two, the spring mounting is in the cavity that is formed by enclosing cover and brush box, the enclosing cover is connected to the one end of spring and the other end passes through the spring housing to be connected with the carbon brush, the carbon brush links to each other with the contact disc, the brush box covers at the outer end of shaft through locking bolted connection, insulating part sets up between locking bolt and brush box and the outer end cover of shaft, is equipped with O type sealing washer between insulating part and.
Furthermore, the spring is a special-shaped spring, one end of the special-shaped spring, which is connected with the outer cover, is cylindrical, and one end of the special-shaped spring, which is connected with the carbon brush through the spring sleeve, is in a cone shape with the diameter gradually reduced.
Furthermore, key grooves matched with keys in the brush box are formed in two sides of the carbon brush.
Furthermore, a cutting groove is arranged between the carbon brush and the contact disc.
Furthermore, the contact disc is installed in a square hole at the end part of an axle of the engineering truck through a square column body.
Further, the current density of the carbon brush is 30-35A/cm2。
Furthermore, an insulating sleeve is arranged between the locking bolt and the brush box, and an insulating pad is arranged between the brush box and the outer end cover of the wheel shaft.
The utility model discloses following beneficial effect has:
1. the utility model provides an engineering vehicle axle head grounding device, which adopts a special-shaped cylindrical spring to provide a carbon brush pressing force to satisfy the large axial movement of the engineering vehicle; using a high current densityCarbon brush (current density 30-35A/cm)2) The problem of narrow installation space of the engineering wheel shaft is solved; the contact disc is connected to the end part of the shaft end by adopting a novel structure (namely a convex square column), so that the occupied space is small, the installation is convenient and reliable, and the requirement of small installation space of the end part of the wheel shaft is met.
2. The utility model provides a pair of spring that adopts among the engineering truck axle head earthing device is special-shaped cylinder spring, special-shaped cylinder spring is cylindrical with the one end of enclosing cover contact, is round platform shape with the one end of carbon brush contact. When the axial movement of the wheel shaft is large, the axial movement amount of the carbon brush of the grounding device needs to meet requirements and needs to be reliably contacted with the contact disc, so that the special-shaped cylindrical spring is designed to be arranged in the outer cover and connected with the carbon brush through the spring sleeve, a pressing force is provided for the contact of the carbon brush and the contact disc, the reliable contact of the carbon brush and the contact disc is ensured, the spring can bear the impact load of a vehicle in the running process, and the grounding device has the characteristic of large axial movement.
3. The utility model provides a pair of both sides of carbon brush among engineering truck axle head earthing device are equipped with the keyway that matches with the key in the brush box, and the direction of motion of carbon brush can be restricted with the key in the brush box 7 to the both sides keyway of carbon brush like this, prevents that the carbon brush from being rotary motion. And a row cutting groove is arranged between the brush box and the contact disc. Therefore, dust generated by abrasion of the carbon brush and the contact disc is discharged through the scraping grooves, and the dust is prevented from being accumulated between the carbon brush and the contact disc to influence the resistance.
4. The utility model provides a grounding device for the axle end of a engineering truck, which can not only meet the installation of the narrow axle box space and the smaller axle end part of the engineering truck; meanwhile, the device has the characteristics of compact structure, convenience in installation, large rated working current, adaptation to different axial play amounts and the like.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
the device comprises an insulating sleeve 1, an insulating sleeve 2, an outer cover 3, a spring 4, a spring sleeve 5, a carbon brush 6, a sealing gasket 7, a brush box 8, an insulating gasket 9, an O-shaped sealing ring 10, a contact disc 11, a key 12 and a row cutting groove.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1, an engineering vehicle axle head earthing device, including carbon brush 5, brush box 7, spring 3, enclosing cover 2, contact disc 10 and insulating part, carbon brush 5 sets up in brush box 7, and the copper pigtail line of carbon brush 5 passes through the bolt to be connected with brush box 7, spring 3 installs in enclosing cover 2, is connected with carbon brush 5 through 3 covers of spring, carbon brush 5 links to each other with contact disc 10, and enclosing cover 2 passes through the bolt and fastens with brush box 7, is equipped with sealed 6 between enclosing cover 2 and the brush box 7, can prevent effectively that rainwater and dust from getting into and influencing the earthing device performance. The brush box 7 is fastened on the outer end cover of the wheel shaft through a locking bolt, an insulating part is arranged between the locking bolt and the brush box 7, the insulating part is preferably an insulating sleeve 1, and current can be prevented from passing through the bolt. An insulating part is arranged between the brush box 7 and the outer end cover of the wheel shaft, and the insulating part is preferably an insulating pad 8 which can prevent current from passing through the outer end cover of the wheel shaft; an O-shaped sealing ring 9 is arranged between the insulating pad and the outer end cover of the wheel shaft, so that rainwater and dust are prevented from entering to influence the performance of the grounding device.
In one embodiment, the spring 3 is a special-shaped cylindrical spring, one end of the special-shaped cylindrical spring 3 connected with the outer cover 2 is cylindrical, and one end connected with the carbon brush 5 through the spring sleeve 4 is in a truncated cone shape with gradually reduced diameter (i.e., the large diameter end of the special-shaped spring is connected with the outer cover, and the small diameter end is connected with the carbon brush). When the axial movement of the wheel shaft is large, the axial movement amount of the carbon brush 5 in the grounding device needs to meet requirements and needs to be reliably contacted with the contact disc 10, so that the special-shaped cylindrical spring 3 is designed to be arranged in the outer cover 2 and connected with the carbon brush 5 through the spring sleeve 4, pressing force is provided for the contact between the carbon brush 5 and the contact disc 10, the reliable contact between the carbon brush 5 and the contact disc 10 is ensured, the spring can bear the impact load of a vehicle in the running process, and the grounding device has the characteristic of large axial movement.
In one embodiment, the carbon brush 5 is provided with key grooves on both sides thereof to match the keys in the brush box 7. Thus, the key grooves on the two sides of the carbon brush 5 and the keys 11 in the brush box 7 limit the moving direction of the carbon brush 5 and prevent the carbon brush 5 from rotating.
In one embodiment, a row of cutting grooves is provided between the carbon brush 5 and the contact disc 10. The dust abraded by the carbon brush 5 and the contact disc 10 is discharged through the discharge groove 12, and the dust is prevented from forming accumulation between the carbon brush 5 and the contact disc 10 to influence the resistance.
In one embodiment, the contact disc 10 is mounted in a square hole in the end of the axle by means of a square cylinder which ensures that the contact disc follows the rotation of the axle when it is turned. Therefore, the contact disc is connected to the end part of the shaft end by adopting a novel structure (namely a convex square column), the occupied space is small, the installation is convenient and reliable, and the requirement of small installation space of the end part of the wheel shaft can be met.
In one embodiment, the carbon brush 5 is a high current density carbon brush having a current density of 30 to 35A/cm2. The problem of narrow and small installation space of the engineering wheel shaft is solved by adopting a high-current density carbon brush.
When the automobile is in work, current generated by the automobile body in thunderstorm weather or in running flows into the contact disc through the carbon brush in the grounding device, the contact disc flows into the axle and further flows into the wheels and the steel rail, the grounding backflow is realized, the bogie bearing is prevented from being corroded by electricity, and the reliability of the running of the automobile is improved.
The utility model provides a grounding device for the axle end of a engineering truck, which can not only meet the installation of the narrow axle box space and the smaller axle end part of the engineering truck; meanwhile, the device has the characteristics of compact structure, convenience in installation, large rated working current, adaptation to different axial play amounts and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an engineering vehicle axle head earthing device, its characterized in that, includes carbon brush, brush box, spring, enclosing cover, contact disc and insulating part, the carbon brush sets up in the brush box, and the copper pigtail line of carbon brush passes through the bolt to be connected with the brush box, the enclosing cover passes through the bolt to be connected with the brush box and is equipped with sealed the pad between the two, the spring is installed in the cavity that is formed by enclosing cover and brush box, the enclosing cover is connected and the other end passes through the spring housing to be connected with the carbon brush to the one end of spring, the carbon brush links to each other with the contact disc, the brush box covers at the outer end of shaft through locking bolted connection, insulating part sets up between locking bolt and brush box and the outer end cover of shaft, is equipped with O type sealing washer between insulating part.
2. The grounding device for the end of a engineering truck as claimed in claim 1, wherein the spring is a special-shaped spring, one end of the special-shaped spring connected with the outer cover is cylindrical, and one end of the special-shaped spring connected with the carbon brush through the spring sleeve is in a truncated cone shape with a gradually reduced diameter.
3. The grounding device for the end of a engineering truck as claimed in claim 1, wherein key grooves matched with the keys in the brush box are formed on two sides of the carbon brush.
4. The grounding device for the end of a working truck according to claim 1, wherein a cutting groove is formed between the carbon brush and the contact disc.
5. The stub grounding device of a machineshop truck as claimed in claim 1, wherein the contact disc is installed in a square hole at the end of the axle of the machineshop truck through a square column.
6. The end grounding device for engineering truck of claim 1, wherein the current density of the carbon brush is 30-35A/cm2。
7. The grounding device for the axle end of the engineering truck as claimed in claim 1, wherein an insulating sleeve is arranged between the locking bolt and the brush box, and an insulating pad is arranged between the brush box and the outer end cover of the axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922363995.9U CN211391288U (en) | 2019-12-25 | 2019-12-25 | Engineering vehicle axle head earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922363995.9U CN211391288U (en) | 2019-12-25 | 2019-12-25 | Engineering vehicle axle head earthing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211391288U true CN211391288U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922363995.9U Active CN211391288U (en) | 2019-12-25 | 2019-12-25 | Engineering vehicle axle head earthing device |
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| Country | Link |
|---|---|
| CN (1) | CN211391288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920661A (en) * | 2019-12-25 | 2020-03-27 | 湖南联诚轨道装备有限公司 | Engineering vehicle axle head earthing device |
-
2019
- 2019-12-25 CN CN201922363995.9U patent/CN211391288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920661A (en) * | 2019-12-25 | 2020-03-27 | 湖南联诚轨道装备有限公司 | Engineering vehicle axle head earthing device |
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