CN113904188B - Railway wagon bearing grounding device - Google Patents
Railway wagon bearing grounding device Download PDFInfo
- Publication number
- CN113904188B CN113904188B CN202111064649.6A CN202111064649A CN113904188B CN 113904188 B CN113904188 B CN 113904188B CN 202111064649 A CN202111064649 A CN 202111064649A CN 113904188 B CN113904188 B CN 113904188B
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- China
- Prior art keywords
- hole
- end cover
- sealing seat
- grounding
- groove
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000005299 abrasion Methods 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 125000003003 spiro group Chemical group 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/64—Devices for uninterrupted current collection
- H01R39/643—Devices for uninterrupted current collection through ball or roller bearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F15/00—Axle-boxes
- B61F15/20—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F15/00—Axle-boxes
- B61F15/20—Details
- B61F15/22—Sealing means preventing entrance of dust or leakage of oil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/58—Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a bearing grounding device of a railway wagon, which comprises: one side of the shaft end flow guide end cover is connected with the end part of the axle penetrating through the bearing inner ring, the middle part of the shaft end flow guide end cover is provided with a conductive column, and the other side of the shaft end flow guide end cover is provided with a first cylindrical flange; the mounting seat body comprises a base sleeved on the outer side of the first cylindrical flange and connected with the axle box, a sealing seat is connected to the outer side of the base, a sealing ring is arranged between the sealing seat and the base, a first through hole is formed in the middle of the sealing seat, a conductive column penetrates through the first through hole and is not in contact with the first through hole, a cylindrical connector is arranged on the outer side of the sealing seat, and an insulating plate is arranged between the connector and the sealing seat; the guide mechanism comprises a grounding end cover connected to the connector, a second through hole is formed in the middle of the grounding end cover, a wear indicating column is slidably arranged in the second through hole, the wear indicating column is arranged on a tensioning disc located inside the connector, an elastic component is arranged between the tensioning disc and the grounding end cover, and a carbon brush is arranged between the tensioning disc and the conductive column.
Description
Technical Field
The invention belongs to the technical field of bearing lands, and particularly relates to a railway wagon bearing grounding device.
Background
The existing railway freight car adopts self-sealing bearings, maintenance work such as filling lubricating grease is not needed in the whole press fitting and use process, and in order to simplify the process, an axle box with a larger gap with the bearings is mostly adopted for direct sleeving, so that larger displacement movement exists between the bearings and the axle box in the vertical direction and the axial direction in the running process of the vehicle. The existing grounding device mostly requires that a larger displacement movement cannot be achieved between the bearing and the axle box, is difficult to be suitable for the bearing and the axle box of the railway wagon, and can check the abrasion degree of the carbon brush only after the end cover is opened, and has no indicating device capable of displaying the abrasion degree of the carbon brush in real time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a railway wagon axle bearing device which is suitable for the working condition of large fit clearance between a railway wagon bearing and an axle box and can display the abrasion degree of a carbon brush in real time.
In order to achieve the above object, the present invention provides a railroad freight car axle receiving place apparatus comprising:
the shaft end flow guide end cover is characterized in that one side of the shaft end flow guide end cover is connected with the end part of an axle penetrating through the bearing inner ring, a conductive column is arranged in the middle of the shaft end flow guide end cover, and a first cylindrical flange is arranged on the other side of the shaft end flow guide end cover;
the mounting seat body comprises a base which is sleeved on the outer side of the first cylindrical flange and connected with the axle box, a sealing seat is connected to the outer side of the base, a sealing ring is arranged between the sealing seat and the base, the inner periphery of the sealing ring is in sealing fit with the first cylindrical flange, a first through hole is formed in the middle of the sealing seat, the conductive column penetrates through the first through hole and is not in contact with the hole wall of the first through hole, a cylindrical connecting body is arranged on the outer side of the sealing seat, and an insulating plate is arranged between the connecting body and the sealing seat;
the guide mechanism comprises a grounding end cover connected to the connector, a second through hole is formed in the middle of the grounding end cover, a wear indicating column is slidably arranged in the second through hole, the wear indicating column is arranged on a tensioning disc located inside the connector, an elastic component is arranged between the tensioning disc and the grounding end cover, and a carbon brush is arranged between the tensioning disc and the conductive column.
Optionally, the axle end water conservancy diversion end cover includes circular shape end cover body, one side of end cover body is provided with the ring channel, the ring channel with the tip cooperation of bearing inner race, the center of end cover body is provided with the screw hole, the one end of electrically conductive post with the screw hole spiro union, the end cover body passes through bolted connection the tip of axletree.
Optionally, the conductive column includes connecting portion and contact portion, the one end of connecting portion with the water conservancy diversion end cover can dismantle the connection, the other end of connecting portion is connected with the contact portion, the diameter of contact portion is greater than the diameter of connecting portion.
Optionally, a groove is formed in one side of the base, a portion of the shaft end flow guiding end cover located at the outer side of the first cylindrical flange is arranged in the groove and is not in contact with the groove bottom and the groove wall of the groove, a third through hole is formed in the middle of the base, the first cylindrical flange penetrates through the third through hole and is not in contact with the hole wall of the third through hole, and the base is connected with the axle box through bolts.
Optionally, the sealing seat through the engaging lug on all around with the base spiro union, one side of sealing seat is the echelonment and has set gradually first holding tank and second holding tank, the cell wall of first holding tank with be provided with first clearance between the periphery of first tube-shape flange, the sealing washer sets up in the second holding tank and is in through the bolt fastening on the sealing seat, the pore wall of first through-hole with be provided with the second clearance between the periphery of conducting column.
Optionally, a connection flange is arranged on the periphery of one end of the connection body, a bolt hole is arranged on the connection flange, an insulating bush is arranged in the bolt hole, and one end of the insulating bush is penetrated in the insulating plate.
Optionally, the wear indicator post integrated into one piece is in on the tensioning disc, the tensioning disc keep away from one side of wear indicator post is provided with the carbon brush holding tank, be provided with annular portion on the periphery of carbon brush holding tank, be provided with a plurality of first guide posts on the annular portion, the cover is equipped with the spring on the first guide post.
Optionally, one side of the ground connection end cover is provided with the location arch, the location arch with the connector is matched with, the ground connection end cover spiro union is in on the connector, the ground connection end cover is close to one side of the connector is provided with the second guide post, the second guide post with first guide post cooperatees, one end cover of spring is established on the first guide post, the other end cover of spring is established on the second guide post.
Optionally, a grounding stud is disposed on the grounding end cap.
Optionally, the rail wagon further comprises a wire, wherein grounding rings are arranged at two ends of the wire, and the two grounding rings are respectively connected to the grounding stud and the rail wagon.
The invention provides a railway freight car axle bearing device, which has the beneficial effects that:
1. the device is provided with obvious vertical and axial gaps between the mounting seat body and the shaft end flow guide end cover, allows larger displacement movement between the bearing and the axle box, prevents interference between all parts in vehicle operation, and is applicable to working conditions with larger fit gap between the bearing and the axle box of a railway wagon;
2. the device is internally provided with a sealing ring, the inner side surface, the outer side surface and the inner ring surface of the sealing ring are respectively closely attached to the end cover, the base and the sealing seat, so that water, dust and the like are prevented from entering the axle box and the bearing;
3. the labyrinth-shaped gap between the conductive copper column and the sealing seat of the device can prevent graphite dust generated after the carbon brush is worn from entering the axle box and the bearing, prolong the service life and reduce maintenance work;
4. the end part of the device is provided with the abrasion indicating column, so that the abrasion degree of the carbon brush can be reflected in real time, the observation is simple and convenient, and the use safety is improved;
5. the device adopts the bolt and thread connection mode, and only the end guide mechanism needs to be removed entirely and then replaced when the carbon brush is replaced, so that the device is simple and convenient to assemble and disassemble, and has no requirement on a maintenance site.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic cross-sectional structural view of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 2 shows a three-dimensional overall structural schematic of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 3 shows a schematic three-dimensional sectional structure of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 4 shows a schematic view of an axle end deflector end cap mounting structure of a rail wagon bearing grounding device according to one embodiment of the present invention.
Fig. 5 shows a schematic cross-sectional structural view of an axial end cap of a rail wagon bearing grounding device according to one embodiment of the present invention.
Fig. 6 shows a schematic view of a mounting base mounting structure of a rail wagon bearing grounding device according to an embodiment of the present invention.
Fig. 7 shows a schematic view of the base structure of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 8 shows a schematic view of the seal housing structure of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 9 shows a schematic diagram of a connection body structure of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 10 shows a schematic view of a diversion mechanism installation structure of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 11 shows a schematic overall structure of a diversion mechanism of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 12 shows a schematic structural view of a tension disc of a railway wagon bearing grounding device according to an embodiment of the present invention.
Fig. 13 shows a schematic structural view of a ground end cap of a railway wagon bearing grounding device according to one embodiment of the present invention.
Fig. 14 shows a schematic structural view of a wire of a railway wagon bearing grounding device according to an embodiment of the present invention.
Reference numerals illustrate:
1. a shaft end flow guiding end cover; 2. a bearing inner ring; 3. an axle; 4. a conductive post; 5. a first cylindrical flange; 6. a mounting base body; 7. an axle box; 8. a base; 9. a sealing seat; 10. a seal ring; 11. a first through hole; 12. a connecting body; 13. an insulating plate; 14. a diversion mechanism; 15. a grounding end cover; 16. a second through hole; 17. a wear indicator post; 18. a tension disc; 19. an elastic member; 20. a carbon brush; 21. an end cap body; 22. an annular groove; 23. a threaded hole; 24. a groove; 25. a third through hole; 26. a first accommodation groove; 27. a second accommodation groove; 28. a first gap; 29. a ground ring; 30. a second gap; 31. a connecting flange; 32. an insulating bush; 33. a carbon brush accommodating groove; 34. an annular portion; 35. a first guide post; 36. positioning the bulge; 37. a second guide post; 38. a grounding stud; 39. and (5) conducting wires.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1 to 14, the present invention provides a railroad car axle receiving area apparatus comprising:
the shaft end guide end cover 1, one side of the shaft end guide end cover 1 is connected with the end part of the shaft 3 penetrating through the bearing inner ring 2, the middle part of the shaft end guide end cover 1 is provided with a conductive column 4, and the other side of the shaft end guide end cover 1 is provided with a first cylindrical flange 5;
the installation seat body 6 comprises a base 8 which is sleeved on the outer side of the first cylindrical flange 5 and is connected with the axle box 7, a sealing seat 9 is connected to the outer side of the base 8, a sealing ring 10 is arranged between the sealing seat 9 and the base 8, the inner periphery of the sealing ring 10 is in sealing fit with the first cylindrical flange 5, a first through hole 11 is arranged in the middle of the sealing seat 9, the conductive column 4 is arranged in the first through hole 11 in a penetrating manner and is not in contact with the hole wall of the first through hole 11, a cylindrical connecting body 12 is arranged on the outer side of the sealing seat 9, and an insulating plate 13 is arranged between the connecting body 12 and the sealing seat 9;
the guide mechanism 14, the guide mechanism 14 includes the earth end cover 15 of connecting on the connector 12, and earth end cover 15 middle part is provided with second through-hole 16, and the second through-hole 16 is slided and is provided with wear indicator post 17, and wear indicator post 17 sets up on being in the inside tensioning disc 18 of connector 12, is provided with elastomeric element 19 between tensioning disc 18 and the earth end cover 15, is provided with carbon brush 20 between tensioning disc 18 and the conductive column 4.
Specifically, the shaft end guide end cover 1 is rigidly connected to the axle 3 and the bearing inner ring 2 and fixes the conductive column 4, the base 8 of the mounting base 6 is sleeved outside the first cylindrical flange 5 of the shaft end guide end cover 1 and forms clearance fit with the first cylindrical flange 5, the base 8 is rigidly connected with the axle box 7, and the clearance fit can adapt to the relative displacement when the relative displacement is sent between the bearing and the axle box 7, so that the device can be used under the working condition that the mounting fit clearance between the bearing and the axle box 7 is larger; the sealing seat 9 is rigidly connected to the base 8, and the sealing ring 10 can prevent powder generated by abrasion of the carbon brush 20 or external dust from entering the bearing or the axle box 7; a cavity is formed in the connector 12 between the sealing seat 9 and the grounding end cover 15, a flow guide mechanism 14 such as a carbon brush 20 is arranged in the cavity, and the insulating plate 13 is arranged to enable the conductive column 4 to conduct electricity only through the carbon brush 20 and to conduct electricity to the grounding end cover 15, so that safety is improved; in the diversion mechanism 14, due to the existence of the elastic component 19, the carbon brush 20 is always in close contact with the conductive column 4, the carbon brush 20 is worn along with the rotation of the conductive column 4, the tension disc 18 and the abrasion indicating column 17 move towards the direction close to the axle 3 under the action of the elastic component 19, and meanwhile, the abrasion amount of the carbon brush 20 can be judged according to the retraction of the abrasion indicating column 17 relative to the grounding end cover 15; the ground cap 15 is used for grounding.
In this embodiment, the shaft end diversion end cover 1 includes a circular end cover body 21, one side of the end cover body 21 is provided with an annular groove 22, the annular groove 22 is matched with the end part of the bearing inner ring 2, the center of the end cover body 21 is provided with a threaded hole 23, one end of the conductive column 4 is in threaded connection with the threaded hole 23, and the end cover body 21 is connected with the end part of the axle 3 through a bolt.
Specifically, the arrangement of the annular groove 22 enables the relative positions of the shaft end diversion end cover 1 and the bearing inner ring 2 to be stable and unchanged, and the conductive column 4 is in threaded connection with the end cover body 21, so that the disassembly and replacement are convenient.
In this embodiment, the conductive column 4 includes a connection portion and a contact portion, one end of the connection portion is detachably connected to the flow guiding end cap, the other end of the connection portion is connected to the contact portion, and the diameter of the contact portion is larger than that of the connection portion.
Specifically, the conductive post 4 is a copper conductive post 4, and the contact portion is used for contacting with the carbon brush 20.
In this embodiment, a groove 24 is disposed on one side of the base 8, a portion of the shaft end guide end cover 1 located outside the first cylindrical flange 5 is disposed in the groove 24 and is not in contact with the bottom and the wall of the groove 24, a third through hole 25 is formed in the middle of the base 8, the first cylindrical flange 5 is disposed in the third through hole 25 in a penetrating manner and is not in contact with the wall of the third through hole 25, and the base 8 is connected to the axle box 7 through a bolt.
Specifically, a vertical gap is formed between the bottom and the wall of the groove 24 and the shaft end guide end cover 1, and a vertical gap is also formed between the wall of the third through hole 25 and the periphery of the first cylindrical flange 5.
In this embodiment, the sealing seat 9 is screwed with the base 8 through the connecting lugs on the periphery, one side of the sealing seat 9 is provided with a first accommodating groove 26 and a second accommodating groove 27 in a step shape in sequence, a first gap 28 is arranged between the groove wall of the first accommodating groove 26 and the periphery of the first cylindrical flange 5, the sealing ring 10 is arranged in the second accommodating groove 27 and is fixed on the sealing seat 9 through bolts, and a second gap 30 is arranged between the hole wall of the first through hole 11 and the periphery of the conductive column 4.
Specifically, a first gap 28 between the groove wall of the first accommodating groove 26 and the outer periphery of the first cylindrical flange 5 is a vertical gap, a second gap 30 between the hole wall of the first through hole 11 and the outer periphery of the conductive post 4 is a vertical gap, and a third gap is provided between the seal ring 10 and the groove wall of the second accommodating groove 27, and the third gap is also a vertical gap.
In the present embodiment, a connection flange 31 is provided on the outer periphery of one end of the connection body 12, a bolt hole is provided on the connection flange 31, an insulating bush 32 is provided in the bolt hole, and one end of the insulating bush 32 is inserted into the insulating plate 13.
Specifically, the connection body 12 spiro union is convenient to dismantle on sealing seat 9 and overhauls, is provided with annular backing plate on the periphery of insulating bush 32 one end, prevents to install and electrically conducts between the bolt of connection body 12 and the connection body 12, prevents that the electric current from getting into the bearing roller through axle box 7, improves the security.
In this embodiment, the wear indicating column 17 is integrally formed on the tension disc 18, a carbon brush accommodating groove 33 is provided on one side of the tension disc 18 away from the wear indicating column 17, an annular portion 34 is provided on the outer periphery of the carbon brush accommodating groove 33, a plurality of first guide columns 35 are provided on the annular portion 34, and springs are sleeved on the first guide columns 35.
Specifically, the elastic member 19 is a spring, and the first guide post 35 provides a guide function for the spring.
In this embodiment, a positioning protrusion 36 is disposed on one side of the grounding end cover 15, the positioning protrusion 36 is matched with the connector 12, the grounding end cover 15 is screwed on the connector 12, a second guide post 37 is disposed on one side of the grounding end cover 15 close to the connector 12, the second guide post 37 is matched with the first guide post 35, one end of the spring is sleeved on the first guide post 35, and the other end of the spring is sleeved on the second guide post 37.
Specifically, the grounding end cover 15 is rigidly connected to the connecting body 12, a gap is provided between the first guide post 35 and the second guide post 37, the spring is a compression spring, and the spring always applies a force to the carbon brush 20 close to the conductive post 4 through the carbon brush accommodating groove 33.
In this embodiment, the ground cap 15 is provided with a ground stud 38.
Specifically, the grounding stud 38 is welded to the grounding end cap 15, and a grounding nut is disposed on the grounding stud 38.
In this embodiment, the guide wire 39 is also provided with a grounding ring 40 at both ends of the guide wire, and the two grounding rings 40 are used for connection to the grounding stud 38 and to the railway wagon, respectively.
Specifically, a wire 39 is assembled between the grounding stud 38 on the grounding end cover 15 and the tensioning disc 18 and at the grounding nut, and the wire 39 can be connected with the vehicle body to realize grounding; the grounding device has the function of preventing the roller from generating electric erosion caused by current passing through the bearing roller, and when the grounding device is assembled and the vehicle body generates current, the current is led into the ground through the route of the vehicle body-wire 39-grounding stud 38-tensioning disc 18-carbon brush 20-conductive column 4-shaft end diversion end cover 1-shaft 3-wheel-rail so as to prevent the current from passing through the bearing roller; the insulating plate 13 and the insulating bush 32 are arranged to isolate the sealing seat 9 from being connected with the connecting body 12 through metal, so that current is prevented from entering the bearing roller through the axle box 7.
In summary, when the railway wagon axle bearing device is used, in the running process of a vehicle, as the fit clearance between the bearing and the axle box of the existing railway wagon is larger, the bearing and the axle end guide end cover 1 can move vertically and axially, so that larger vertical and axial clearances are arranged between the mounting seat body 6 of the device and the axle end guide end cover 1, and interference among all parts in the running process of the vehicle is prevented; the inner side surface, the outer side surface and the inner ring surface of the sealing ring 10 are respectively closely adhered to the end cover, the base 8 and the sealing seat 9, so that water, dust and the like are prevented from entering the axle box 7 and the bearing; the labyrinth-shaped gap formed between the conductive copper column and the sealing seat 9 can prevent graphite dust generated after the carbon brush 20 is worn from entering the axle box 7 and the bearing; the tensioning disc 18 in the flow guiding device can axially move under the action of spring force, so that the carbon brush 20 is ensured to be in close contact all the time when the conductive copper column moves left and right; the right abrasion indicating column 17 of the tensioning disc 18 extends out of the grounding end cover 15, the abrasion degree of the carbon brush 20 can be judged by observing the extending amount of the abrasion indicating column 17, and when the abrasion indicating column 17 completely enters into the center hole of the grounding end cover 15, the carbon brush 20 is abraded to the limit and should be replaced.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (7)
1. A railway wagon bearing grounding device, characterized in that the device comprises:
the shaft end flow guide end cover is characterized in that one side of the shaft end flow guide end cover is connected with the end part of an axle penetrating through the bearing inner ring, a conductive column is arranged in the middle of the shaft end flow guide end cover, and a first cylindrical flange is arranged on the other side of the shaft end flow guide end cover;
the mounting seat body comprises a base which is sleeved on the outer side of the first cylindrical flange and connected with the axle box, a sealing seat is connected to the outer side of the base, a sealing ring is arranged between the sealing seat and the base, the inner periphery of the sealing ring is in sealing fit with the first cylindrical flange, a first through hole is formed in the middle of the sealing seat, the conductive column penetrates through the first through hole and is not in contact with the hole wall of the first through hole, a cylindrical connecting body is arranged on the outer side of the sealing seat, and an insulating plate is arranged between the connecting body and the sealing seat;
the guide mechanism comprises a grounding end cover connected to the connector, a second through hole is formed in the middle of the grounding end cover, a wear indication column is slidably arranged in the second through hole, the wear indication column is arranged on a tensioning disc positioned in the connector, an elastic part is arranged between the tensioning disc and the grounding end cover, and a carbon brush is arranged between the tensioning disc and the conductive column;
the shaft end flow guide end cover comprises a circular end cover body, one side of the end cover body is provided with an annular groove, the annular groove is matched with the end part of the bearing inner ring, the center of the end cover body is provided with a threaded hole, one end of the conductive column is in threaded connection with the threaded hole, and the end cover body is connected with the end part of the axle through a bolt;
a groove is formed in one side of the base, the part of the shaft end flow guide end cover, which is positioned at the outer side of the first cylindrical flange, is arranged in the groove and is not in contact with the groove bottom and the groove wall of the groove, a third through hole is formed in the middle of the base, the first cylindrical flange is arranged in the third through hole in a penetrating manner and is not in contact with the wall of the third through hole, and the base is connected with the axle box through a bolt;
the sealing seat is in threaded connection with the base through connecting lugs on the periphery, a first accommodating groove and a second accommodating groove are sequentially formed in one side of the sealing seat in a step shape, a first gap is formed between the groove wall of the first accommodating groove and the periphery of the first cylindrical flange, the sealing ring is arranged in the second accommodating groove and is fixed on the sealing seat through bolts, and a second gap is formed between the hole wall of the first through hole and the periphery of the conductive column.
2. The railroad car axle receiving arrangement of claim 1, wherein the conductive post includes a connecting portion and a contact portion, one end of the connecting portion being detachably connected to the deflector end cap, the other end of the connecting portion being connected to the contact portion, the contact portion having a diameter greater than a diameter of the connecting portion.
3. The railway freight car axle receiving ground device according to claim 1, wherein a connecting flange is provided on an outer periphery of one end of the connecting body, a bolt hole is provided on the connecting flange, an insulating bush is provided in the bolt hole, and one end of the insulating bush is penetrated in the insulating plate.
4. The railway freight car axle receiving ground device according to claim 1, wherein the wear indication column is integrally formed on the tension disc, a carbon brush accommodating groove is formed in one side, far away from the wear indication column, of the tension disc, an annular portion is formed in the periphery of the carbon brush accommodating groove, a plurality of first guide columns are arranged on the annular portion, and springs are sleeved on the first guide columns.
5. The railroad car axle receiving ground device of claim 4, wherein a positioning protrusion is provided on one side of the ground end cap, the positioning protrusion mates with the connector, the ground end cap is screwed on the connector, a second guide post is provided on one side of the ground end cap near the connector, the second guide post mates with the first guide post, one end of the spring is sleeved on the first guide post, and the other end of the spring is sleeved on the second guide post.
6. The railroad car axle receiving ground apparatus of claim 1, wherein the ground end cap has a ground stud disposed thereon.
7. The railroad car axle receiving ground apparatus of claim 6, further comprising a wire having ground rings at both ends, two of said ground rings being adapted to be connected to said ground stud and to a railroad car, respectively.
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| CN202111064649.6A CN113904188B (en) | 2021-09-09 | 2021-09-09 | Railway wagon bearing grounding device |
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| CN202111064649.6A CN113904188B (en) | 2021-09-09 | 2021-09-09 | Railway wagon bearing grounding device |
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| CN113904188A (en) | 2022-01-07 |
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