CN107747596B - Four-fold sealed axle box assembly of railway passenger car - Google Patents
Four-fold sealed axle box assembly of railway passenger car Download PDFInfo
- Publication number
- CN107747596B CN107747596B CN201710633832.0A CN201710633832A CN107747596B CN 107747596 B CN107747596 B CN 107747596B CN 201710633832 A CN201710633832 A CN 201710633832A CN 107747596 B CN107747596 B CN 107747596B
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- China
- Prior art keywords
- seal
- axle box
- gasket
- bearing
- ring
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000004519 grease Substances 0.000 claims abstract description 9
- 230000001050 lubricating effect Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 5
- 231100000719 pollutant Toxicity 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 2
- 238000005552 hardfacing Methods 0.000 claims description 2
- 230000009545 invasion Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 238000011109 contamination Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a quadruple-sealed railway passenger car axle box assembly, which comprises an axle box bearing, a gasket, an axle box body, an axle box rear cover, a sealing assembly and other axle box assemblies, and is characterized in that the axle box rear cover and a labyrinth groove and a labyrinth bulge of the gasket are matched to form labyrinth seal to form first resealing; the axle box rear cover and the gasket are subjected to supplementary sealing through a V-ring sealing piece to form second resealing; the planar portion of the gasket seal contacts the seal lip of the low friction seal to form a third reseal; the low friction seal forms a fourth seal with the slit of the bearing inner race flange guide surface. The first heavy seal and the second heavy seal are external seals, and the purpose is to resist external pollutants from entering the axle box body; the third and fourth seals are double-inner seals, and the purpose is to prevent the lubricating grease inside the bearing from leaking. The invention relates to a railway passenger train axle box assembly which has simple structure and excellent sealing effect and prolongs the service life of the railway passenger train axle box.
Description
Technical Field
The present invention relates to a passenger train axlebox assembly and, more particularly, to a quad-sealed passenger train axlebox assembly.
Background
Current passenger car axlebox assembly sealing schemes are single metal labyrinth seals or felt seals. The single metal labyrinth sealing performance is general, the sealing piece can be better attached in radial direction and axial direction, but the attaching degree is limited by the machining error of the sealing piece and the size of a sealing gap, once the sealing gap is overlarge, external pollution can invade the interior of the axle box, and the normal use of the internal bearing is influenced by the pollution. The single felt sealing structure is simple, and is influenced by various environmental factors, so that the applicability is not strong, the friction is large, and the sealing effect is general.
Disclosure of Invention
The invention aims to provide a quadruple-sealed axle box assembly of a railway passenger car, which solves the problems existing in the sealing of the existing axle box assembly of the railway passenger car.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a four sealed passenger train axle box subassemblies, includes axle box bearing, packing ring, axle box back cover, seal assembly and other axle box subassemblies, its characterized in that:
the axle box bearing is a double-row cylindrical roller bearing with a retainer, the outer ring of the bearing is of an integrated structure, a groove is processed on the outer surface of the outer ring of the bearing near the end part, and a low-friction sealing element is installed. The double-row cylindrical rollers are respectively separated by a first retainer and a second retainer, the bearing inner ring is composed of a flange inner ring and a flange-free inner ring, and the flange-free inner ring is axially positioned by a movable retainer ring.
The low friction seal is composed of a steel low friction seal body and a rubber low friction seal lip.
The gasket is a step-shaped gasket, the gasket is abutted against the axle box axle, a labyrinth bulge is machined on the upper part of the left end of the gasket, and the end face of the right end is abutted against the end face of the bearing outer ring to axially position. The contact area between the right end face of the gasket and the end face of the bearing outer ring is a surface hardening layer, so that friction influence caused by shearing force is reduced.
The upper part of the right end of the gasket is provided with a gasket sealing piece which is made of stamping steel.
The axle box body and the axle box back cover joint surface are sealed by the O-shaped ring, so that external pollutants are prevented from entering the axle box from the joint surface gap.
And a labyrinth groove and a V-shaped ring groove are formed in one end of the rear cover of the axle box, and the end face of the other end is axially positioned on the outer ring of the bearing of the axle box and is connected with the end part of the axle box body through bolts.
The other axle box components comprise an axle box front cover, a baffle, baffle bolts and anti-loose gaskets.
And the axle box rear cover, the labyrinth grooves and the labyrinth bulges of the gasket are matched to form labyrinth seal to form first heavy seal.
The axle box rear cover and the gasket are subjected to supplementary sealing through a V-ring sealing piece, and the V-ring opening faces to the outer side and is used for resisting pollution invasion caused by failure of the first resealing to form a second resealing.
The planar portion of the gasket seal is a surface hardened layer that forms a lip seal in contact with the low friction seal lip to form a third reseal.
The low friction seal forms a fourth seal with the slit of the bearing inner race flange guide surface.
The first and second heavy seals are external seals, and are aimed at resisting external pollutants, such as dust, particles and moisture, from entering the interior of the axle box, and causing lubrication failure and abrasion influence on the axle box, particularly the axle box bearing.
The third seal and the fourth seal are opposite inner seals, and the purpose is to prevent lubricating grease in the bearing from leaking and polluting the interior of the axle box.
The four-seal railway passenger car axial assembly is designed by considering the problem that when an axle box wheel pair turns along a path with a large curvature or runs on an uneven road, a small amount of internal axial displacement of a cylindrical roller bearing is caused to possibly cause leakage of lubricating grease in the bearing.
And second low-friction sealing elements are symmetrically arranged on the outer surface of the outer ring of the axle box bearing, and each second low-friction sealing element consists of a steel second low-friction sealing element main body and a rubber second low-friction sealing element sealing lip.
The baffle sealing piece is arranged on the outer circumferential surface of the baffle, the baffle sealing piece is made of stamping steel, and is contacted with the sealing lip of the second low-friction sealing piece to form a contact lip seal, so that lubricating grease in the bearing is prevented from leaking to the outside of the axle box body.
The movable retainer ring axially positions the inner ring without the flange of the axle box bearing, and the second low-friction sealing piece and the slit of the guide surface of the movable retainer ring form slit sealing.
The bearing front cover is connected with the longitudinal joint surface of the end part of the axle box body through a connecting bolt, and a second O-shaped ring is arranged on the transverse joint surface, so that the bearing front cover is sealed and pollution-proof.
The shoulder of the baffle plate protrudes to abut against the movable check ring, and the end part abuts against the end part of the axle shaft of the axle box and is connected through the baffle plate bolt. In order to prevent the bolt from slipping, a locking gasket is arranged between the bolt and the nut and the baffle.
Drawings
Fig. 1 shows a railway carriage axlebox assembly according to a first embodiment of the present invention.
Fig. 2 shows a schematic structural view of an axlebox bearing and seal according to a first embodiment of the present invention.
Fig. 3 shows a schematic structural view of the pedestal bearing assembly of the first embodiment of the present invention with a small amount of internal displacement.
FIG. 4 shows an enlarged schematic view of a labyrinth seal structure of a first embodiment of the present invention
Fig. 5 shows a second embodiment of the invention.
Fig. 6 shows an enlarged schematic view of the seal structure of the second embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings:
embodiment one:
in this embodiment, and referring to fig. 1-3, a four seal railway car axlebox assembly includes axlebox bearings 7, washers 2, axleboxes 8, axlebox rear cover 1, seal assemblies, and other axlebox assemblies. The axle box bearing 7 is a double-row cylindrical roller bearing with a retainer, the bearing outer ring 71 is of an integrated structure, a groove is processed at the position, close to the end, of the outer surface of the bearing outer ring, and the low-friction sealing element 6 is installed. The double-row cylindrical rollers 72 are separated by a first retainer 731 and a second retainer 732, respectively, and the bearing inner race is constituted by a flanged inner race 743 and a non-flanged inner race 744, the non-flanged inner race 744 being axially positioned by the movable retainer 12.
In the present embodiment, referring to fig. 1 to 3, the low friction seal 6 is composed of a steel low friction seal body 62 and a rubber low friction seal lip 61.
In this embodiment, referring to fig. 1-3, the washer 2 is a stepped washer, and abuts against the axle box axle 21, the labyrinth protrusion 22 is machined on the upper portion of the left end of the washer 2, and the end face of the right end abuts against the end face of the bearing outer ring 71 for axial positioning. The contact area 23 between the right end face of the washer 2 and the end face of the bearing outer race 71 is a surface hardening layer to reduce the friction effect caused by the shearing force. The upper part of the right end of the gasket 2 is provided with a gasket sealing piece 5, and the gasket sealing piece 5 is made of stamping steel.
In this embodiment, referring to fig. 1-4, the joint surface of the axle box body 8 and the axle box back cover 1 is sealed by the O-ring 4, so as to prevent external pollutants from entering the interior of the axle box through the joint surface gap. The rear axle box cover 1 is internally provided with a labyrinth groove 25 and a V-ring groove at one end, and the other end is axially positioned on the outer axle box bearing ring 71 and is connected with the end of the axle box body 8 through bolts. The washer 2 is a stepped washer and is abutted against the axle box axle 21, the labyrinth projection 22 is processed on the upper part of the left end of the washer 2, and the end face of the right end is abutted against the end face of the bearing outer ring 71 for axial positioning. The contact area 23 between the right end face of the washer 2 and the end face of the bearing outer race 71 is a surface hardening layer to reduce the friction effect caused by the shearing force.
In this embodiment, referring to fig. 1 to 4, a gasket seal 5 is installed at the upper right end of the gasket 2, and the gasket seal 5 is made of stamped steel. The labyrinth grooves 25 and the labyrinth protrusions 22 of the pedestal rear cover 1 and the gasket 2 cooperate with each other to form a labyrinth seal 24, constituting a first heavy seal.
In this embodiment, referring to fig. 1, gasket 2 is complementarily sealed by V-ring seal 3, with V-ring seal 3 opening outwardly for resisting contamination intrusion caused by failure of the first resealing to form the second resealing.
In this embodiment, referring to fig. 3, the planar portion 26 of the gasket seal 5 is a hard-facing layer, and contacts the seal lip 61 of the low friction seal 6 to form a third reseal.
In this embodiment, referring to fig. 1-3, the low friction seal 6 forms a fourth seal with the slit of the bearing having the flange guide surface of the flange inner ring 743.
In this embodiment, referring to fig. 1, the first and second heavy seals are external seals, so as to resist external contaminants, such as dust, particles and moisture, from entering the interior of the axle housing 8, and to create a lubrication failure and wear effect on the axle housing 8, and in particular the axle housing bearing 7.
In the present embodiment, referring to fig. 1, the third and fourth seals are double inner seals for the purpose of preventing the lubricating grease inside the pedestal bearing 7 from leaking and contaminating the inside of the pedestal bearing 7.
In this embodiment, referring to fig. 1-3, when designing the four-seal railway passenger car axle box assembly, considering the problem that when the axle box wheel pair (not shown) turns along a path with a larger curvature or runs on an uneven road, a small amount of internal axial displacement of the axle box bearing 7 may cause grease leakage in the bearing, in the invention, the low friction seal 6 and the gasket seal 5 positioned on the outer surface of the axle box bearing outer ring 71 are always contacted with each other, and keep a non-separated state, so that grease leakage outside the axle box 8 is avoided.
In the present embodiment, referring to fig. 1-3, the second low friction seal 9 is symmetrically mounted on the outer surface of the axle box bearing outer ring 71, and the second low friction seal 9 is composed of a steel second low friction seal body 92 and a rubber second low friction seal lip 91.
In this embodiment, referring to fig. 1, the baffle seal 11 is mounted on the outer circumferential surface of the baffle 13, and the baffle seal 11 is made of stamped steel, and contacts with the second low friction seal lip 91 to form a lip seal, so that lubricating grease inside the axle box bearing 7 is prevented from leaking to the outside of the axle box body 8.
In this embodiment, referring to fig. 1, the circlip 12 axially locates the non-flanged inner race 744 of the housing bearing and the second low friction seal 9 forms a slit seal with the slit of the guiding surface of the circlip 12.
In this embodiment, referring to fig. 1, the bearing front cover 14 and the axle box end 8 are connected by a connecting bolt (not shown), and the second O-ring 10 is mounted on the lateral joint surface, so as to seal against contamination.
In this embodiment, see fig. 1, the shoulder of the baffle 13 projects against the circlip 12, the end against the end of the pedestal axle 21, and is connected by the baffle bolt 15. To prevent the baffle bolts 15 from slipping, a lockwasher 16 is disposed between the bolt nuts and the baffle 13.
Embodiment two:
this embodiment is substantially the same as the first embodiment, and is characterized in that:
in this embodiment, referring to fig. 5-6, the horizontal portion 28 of the gasket 2 is provided with a groove, the third gasket seal 17 is fixed on the gasket 2 through the groove, the third gasket seal body 172 of the steel skeleton, the rubber seal lip upper protrusion 173, the rubber seal lip lower protrusion 174, one end of the elastic sleeve 192 is fixed at the position of the third low friction seal 19 near the guiding surface of the pedestal bearing non-flange inner ring 743, the other end of the elastic sleeve 192 is provided with a seal lip 193, the seal lip 193 is located between the two rubber seal lips of the third gasket seal 17, and the point contact is always maintained during the operation of the axle 21.
The outer surface of the axle box bearing outer ring 71 is symmetrically provided with a fourth low friction seal 20, and the fourth low friction seal 20 is composed of a steel fourth seal main body and a rubber fourth seal lip.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above, and various changes can be made according to the purposes of the present invention, so any simple modification, variation, and modification made according to the technical spirit and principles of the technical scheme of the present invention should be regarded as equivalent substitution, and still fall within the protection scope of the technical scheme of the present invention.
Claims (2)
1. The utility model provides a four-fold sealed axle box assembly of a railway passenger car, includes axle box bearing, packing ring, seal assembly, axle box back cover and other axle box assemblies, its characterized in that, the axle box bearing is the biserial cylindrical roller bearing of taking the holder, and the bearing outer lane is an integral type structure, and a recess is processed to the place that the bearing outer lane surface is close to the tip, installs low friction seal, and the bearing inner circle comprises with flange inner circle and no flange inner circle, and no flange inner circle carries out axial positioning to the inner circle by movable retaining ring; the gasket is a stepped gasket, the gasket is abutted against the axle box axle, a labyrinth bulge is machined at the upper part of the left end of the gasket, the end face of the right end is abutted against the end face of the inner ring of the flange, the axial positioning is carried out, a gasket sealing piece is installed at the upper part of the right end of the gasket, and the gasket sealing piece is made of stamping steel;
the joint surface of the axle box body and the axle box rear cover is sealed by a first O-shaped ring to prevent external pollutants from entering the axle box from a joint surface gap,
The other axle box components comprise an axle box front cover, a baffle bolt and an anti-loose gasket;
the bearing front cover is connected with the longitudinal joint surface of the end part of the axle box body through a connecting bolt, and the transverse joint surface is provided with a second O-shaped ring for sealing and pollution prevention; the shoulder part of the baffle plate protrudes to abut against the movable check ring, the end part of the baffle plate abuts against the end part of the axle shaft of the axle box and is connected through a baffle plate bolt, and a locking gasket is arranged between the bolt nut and the baffle plate;
a labyrinth groove and a V-shaped ring groove are processed in one end of the axle box rear cover, and the end face of the other end is axially positioned on the outer ring of the axle box bearing and is connected with the end part of the axle box body through bolts; a V-ring sealing piece is arranged in the V-ring groove;
The sealing assembly is a quadruple seal, and the first double seal is a labyrinth seal formed by the mutual matching of a shaft box rear cover, a labyrinth bulge of the gasket and a labyrinth groove; the second heavy seal is a V-ring seal, the axle box back cover and the gasket are subjected to complementary seal through the V-ring seal, the V-ring seal is arranged close to the inner side of the axle box relative to the labyrinth seal, and an opening of the V-ring seal faces the outer side of the axle box and is used for resisting pollution invasion caused by failure of the first heavy seal; the third seal is a lip seal formed by the contact of a gasket seal and a sealing lip of the low friction seal; the fourth seal is a slit seal formed by the low-friction sealing element and the flange guide surface of the bearing inner ring;
The contact area between the low-friction sealing element and the outer surface of the bearing outer ring is a surface hardening layer so as to reduce friction influence caused by shearing force; the planar portion of the gasket seal is a hard facing layer to reduce friction thereon by the low friction seal lip due to small internal displacement of the bearing.
2. A quad-sealed passenger car axlebox assembly as claimed in claim 1 wherein the first and second seals are external seals for the purpose of resisting external contaminants from entering the axlebox interior and providing lubrication failure and wear effects to said bearings;
The third seal and the fourth seal are opposite inner seals, and the purpose is to prevent lubricating grease in the bearing from leaking and polluting the interior of the axle box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710633832.0A CN107747596B (en) | 2017-07-29 | 2017-07-29 | Four-fold sealed axle box assembly of railway passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710633832.0A CN107747596B (en) | 2017-07-29 | 2017-07-29 | Four-fold sealed axle box assembly of railway passenger car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107747596A CN107747596A (en) | 2018-03-02 |
| CN107747596B true CN107747596B (en) | 2024-10-15 |
Family
ID=61255317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710633832.0A Active CN107747596B (en) | 2017-07-29 | 2017-07-29 | Four-fold sealed axle box assembly of railway passenger car |
Country Status (1)
| Country | Link |
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| CN (1) | CN107747596B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345167A (en) * | 2019-08-20 | 2019-10-18 | 洛阳Lyc轴承有限公司 | Structure is kept off after a kind of novel high speed railway bearing |
| US11255380B2 (en) * | 2019-08-30 | 2022-02-22 | Delta Electronics, Inc. | Bearing assembly and rotary shaft apparatus employing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832511A (en) * | 1988-08-16 | 1989-05-23 | Reliance Electric Company | High efficiency seal devices for shaft bearings |
| JP2009138879A (en) * | 2007-12-07 | 2009-06-25 | Ntn Corp | Railroad vehicle axle bearing device |
| CN105317851A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Axle box bearing used for locomotive |
| CN207539204U (en) * | 2017-07-29 | 2018-06-26 | 山东吉恩纳机械工程技术有限公司 | A kind of passenger train axlebox assemblies of four resealings |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207685A (en) * | 2005-01-27 | 2006-08-10 | Nachi Fujikoshi Corp | Axle bearing device |
| US8790014B2 (en) * | 2010-04-08 | 2014-07-29 | Ntn Corporation | Bearing device for axle of railway vehicle |
| JP2016048078A (en) * | 2014-08-27 | 2016-04-07 | 株式会社不二越 | Bearing device for railway vehicle |
-
2017
- 2017-07-29 CN CN201710633832.0A patent/CN107747596B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832511A (en) * | 1988-08-16 | 1989-05-23 | Reliance Electric Company | High efficiency seal devices for shaft bearings |
| JP2009138879A (en) * | 2007-12-07 | 2009-06-25 | Ntn Corp | Railroad vehicle axle bearing device |
| CN105317851A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Axle box bearing used for locomotive |
| CN207539204U (en) * | 2017-07-29 | 2018-06-26 | 山东吉恩纳机械工程技术有限公司 | A kind of passenger train axlebox assemblies of four resealings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107747596A (en) | 2018-03-02 |
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Effective date of registration: 20240911 Address after: 252666 Tangyuan Industrial Park, Linqing City, Liaocheng City, Shandong Province (located in Tangyuan Town) Applicant after: SHANDONG CAMERY (KMR) BEARING SCIENCE & TECHNOLOGY CO.,LTD. Country or region after: China Applicant after: Shandong Kubo Bearing Technology Co.,Ltd. Address before: 252600 south of Xishou Road, Huamei Road, Linqing City, Liaocheng City, Shandong Province Applicant before: SHANDONG JI'ENNA MECHANICAL ENGINEERING TECHNOLOGY CO.,LTD. Country or region before: China Applicant before: SHANDONG CAMERY (KMR) BEARING SCIENCE & TECHNOLOGY CO.,LTD. |
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