CN108696037A - A kind of traction electric machine positioning end dual bearing structure - Google Patents
A kind of traction electric machine positioning end dual bearing structure Download PDFInfo
- Publication number
- CN108696037A CN108696037A CN201810434078.2A CN201810434078A CN108696037A CN 108696037 A CN108696037 A CN 108696037A CN 201810434078 A CN201810434078 A CN 201810434078A CN 108696037 A CN108696037 A CN 108696037A
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- Prior art keywords
- bearing
- outer ring
- face
- ring
- point contact
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
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- 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
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
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- 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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a kind of traction electric machine positioning end dual bearing structures, relate generally to traction electric machine field, specifically a kind of traction electric machine positioning end dual bearing structure.It adopts the following technical scheme that:Bearing block is provided with the stepped hole of single order tapered from inside to outside, the cascaded surface of the stepped hole is located at the middle part of the stepped hole, cylinder roller bearing and four-point contact ball are packed into from the both ends of bearing block respectively, cylinder roller bearing outer ring is compressed by inside cap, the influence that axial cumulative errors when being packed into from a direction can be reduced in this way, prevents covering ring surface pressure uneven.Present invention is mainly used on traction electric machine, provide a kind of dual bearing structure for the traction electric machine positioning end being sleeved in shaft.
Description
Technical field
The present invention relates to traction electric machine field, specifically a kind of traction electric machine positioning end dual bearing structure.
Background technology
Traction electric machine refers to trunk railway electric locomotive, industrial and mineral electric locomotive, diesel electric locomotive and various electronic
Vehicle(Such as battery car, city electric car, underground railway motor vehicle)The upper motor for traction.Traction electric machine generally corresponds to
The both ends of shaft are equipped with two sets of bearings, and a set of to position end bearing, another set of is floating end bearing, and so-called positioning end is arranged at
The anti-drive end of motor.Existing traction electric machine generally uses the cylinder roller bearing and four-point contact ball group of outer ring being provided with raised edge
To position a kind of classical configuration of end bearing, cylinder roller bearing is used for carrying radial load, four-point contact ball for cooperation
Bearing is used for carrying axial load.And in traction electric machine field, frequently with inner ring by the accurate four assembled point contacts of two halves
Ball bearing, this bearing have higher axial carrying capacity.Referring to Fig.1, the bearing block of existing dual bearing structure is used from interior
The stepped hole of the single order of outside flaring, the cascaded surface of the stepped hole are located at the inner end of the stepped hole, when mounted, first
Internal sealed ring 5 ', cylinder roller bearing outer ring, outer ring spacer 8 ' are sequentially loaded into from a direction in bearing block 2 ', then again should
Assembly set is installing axle sleeve 3 ', cylinder roller bearing inner ring 6 ', inner ring spacer 7 ' and four-point contact ball inner ring 9 '
In the shaft 4 ' of interior half-turn E, then four-point contact ball outer ring loading bearing block 2 ' is interior, by four-point contact ball inner ring 9 '
Outer half-turn F force fits shaft 4 ' on, finally by 10 ' axial compression four-point contact ball outer ring of outer seal ring, pass through survey
12 ' axial compression four-point contact ball inner ring 9 ' of fast fluted disc.Such structure may result in because of the influence of accumulated tolerance
Outer seal ring end face pressure is uneven.Furthermore four-point contact ball outer ring is compacted, without axial floating space so that four-point contact ball
Bearing can bear the additional load brought by shaft thermal expansion or small misalign of Internal and external cycle.Eventually lead to four-point contact ball
The degrading or even scaling loss of acknowledgement of consignment row.
Invention content
Present invention seek to address that existing traction electric machine positioning end dual bearing structure cumulative limit is excessive, covering ring surface pressure not
Flat technical problem.For this purpose, the present invention proposes a kind of traction electric machine positioning end dual bearing structure.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of traction electric machine positioning end dual bearing structure, includes the bearing block of fixed setting(Here so-called fixation is exactly opposite
Machine shaft is fixed, it is preferred that the bearing block is fixed on the end cap of motor), the bearing block is provided with from inside to outside gradually
The stepped hole of the single order of contracting, the cascaded surface of the stepped hole are located at the middle part of the stepped hole, and the stepped hole is by being located at ladder
The first cylindrical hole on the inside of face and the second cylindrical hole composition on the outside of cascaded surface;Be cased in first cylindrical hole outer ring every
Set, the outer end face of the outer ring spacer are connected on cascaded surface, and the inner face of the outer ring spacer has been disposed adjacent interference
Cylinder roller bearing outer ring on bearing block inner wall("inner" described here refers to internal towards motor, far from roller end
Position, the "outside" refer to towards outside motor, close to roller end position, back mention it is inside and outside be all such),
The inside cap being fixed on bearing block inner face is additionally provided on the bearing block, the inside cap abuts cylindrical roller axis
The inner face of bearing outer-ring abuts the inner face of cylinder roller bearing outer ring by inside cap, the outer end face of outer ring spacer supports
Connect the axially position for the component that cascaded surface is realized in the first cylindrical hole;It is cased with outside four-point contact ball in second cylindrical hole
It encloses, the outer seal ring being fixed on bearing block outer end face is additionally provided on the bearing block;The corresponding cylinder roller bearing outer ring,
In outer ring spacer and the cylinder roller bearing inner ring of four-point contact ball outer ring setting, inner ring spacer and four-point contact ball
In shaft, the cylinder roller bearing inner ring inner face has been disposed adjacent to be fixed on adjacent interference circle successively from inside to outside
Axle sleeve in shaft, the four-point contact ball inner ring is assembled by interior half-turn and outer half-turn, the outer end of the outer half-turn
Face is disposed adjacent the speed measuring fluted disc being fixed in shaft, i.e., realizes that the axial direction of each component of inner ring is fixed by axle sleeve and speed measuring fluted disc
Position.When work, cylinder roller bearing bears radial load, and four-point contact ball bears axial load, when installation, circle
Column roller bearing and four-point contact ball are packed into bearing block inside and outside bearing block respectively, and cylinder roller bearing outer ring is logical
Inside cap compression is crossed, the influence of axial cumulative errors when being packed into from a direction is greatly reduced.
Further, the width of the four-point contact ball outer ring is less than the axial length of the second cylindrical hole(Though here
So point out that the width of four-point contact ball outer ring is less than the axial length of the second cylindrical hole, but known in those skilled in the art, relatively
Size should cannot differ too big in rational range, be intended merely to ensure that four-point contact ball is not subject to additional load here
Lotus), four-point contact ball outer ring do not compress, and in the process of running, shaft can occur to thermally expand and axial deformation occurs motor,
Four-point contact ball outer ring will be moved axially with the thermal expansion of shaft and in the limited area, avoid bearing additional
Axial load.Further, the outer end face of the four-point contact ball outer ring is opened up there are two the locating slot for being mutually 180 °,
Locating slot is corresponded on the inner face of outer seal ring and offers blind hole at two, and every group of corresponding blind hole and locating slot are all interspersed with jointly
One positioning pin, positioning pin can prevent four-point contact ball outer ring from being rotated together with shaft.
Further, radially-inwardly protrusion forms annular partition at the outer ring spacer axial middle part, the outer ring spacer
The both sides of annular partition, which are all provided with, mends fat hole.Supplemental lubrication fat can be each served as by two, the fat hole pair of benefit bearing chamber
Effect, improves the lubricant effect of grease on the whole.
Further, the annular groove coaxial with shaft is provided on the outer end face of the bearing block, annular groove is embedded
Equipped with gasket, gasket is pressed on by outer seal ring in annular groove.When installation, outer seal ring is pressed in the outer end face of bearing block
On, belong to rigid contact, locating effect is more preferable, while the gasket in annular groove being compressed, lift-off seal performance.
The beneficial effects of the invention are as follows:The present invention provides a kind of traction electric machine positioning end dual bearing structure, bearing block setting
There are the stepped hole of single order tapered from inside to outside, the cascaded surface of the stepped hole to be located at the middle part of the stepped hole, cylindrical roller
Bearing and four-point contact ball are packed into bearing block inside and outside bearing block respectively, and cylinder roller bearing outer ring passes through inner shaft
It holds lid and cascaded surface realizes that axial compression, such structure and mounting means effectively reduce axial direction when being packed into from a direction
The influence of cumulative errors;In addition, four-point contact ball outer ring does not compress, in the process of running, it is swollen that heat can occur motor for shaft
Swollen and axial deformation occurs, four-point contact ball outer ring can be moved axially with the thermal expansion of shaft, avoid bearing additional
Axial load;The both sides of the annular partition of outer ring spacer, which are all provided with, mends fat hole, can pass through described two bearings in benefit fat hole pair
Room each serves as the effect of supplemental lubrication fat, improves the lubricant effect of grease on the whole;Sealing structure is improved, axis is optimized
Environment acknowledgement of consignment row and safeguarded, sound assurance is provided for the reliability service of motor.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram of the prior art of the present invention;
Fig. 2 is the mounting structure schematic diagram of the present invention.
Specific implementation mode
A kind of traction electric machine positioning end dual bearing structure includes the bearing block 2 of fixed setting(Here so-called fixation is exactly
Opposite machine shaft 4 is fixed, it is preferred that the bearing block 2 is fixed on the end cap 1 of motor), the bearing block 2 be provided with from
The stepped hole of tapered single order from inside to outside, the cascaded surface 18 of the stepped hole are located at the middle part of the stepped hole, the stepped hole
It is made of the first cylindrical hole positioned at 18 inside of cascaded surface and the second cylindrical hole positioned at 18 outside of cascaded surface;First cylinder
Outer ring spacer 17 is cased in hole, the outer end face of the outer ring spacer 17 is connected on the cascaded surface 18, the outer ring spacer 17
Inner face be disposed adjacent cylinder roller bearing outer ring 15 of the interference on 2 inner wall of bearing block("inner" described here
Refer to position internal towards motor, far from 4 end of shaft, the "outside" refers to towards outside motor, close to 4 end of shaft
Position, back mention it is inside and outside be all such), be additionally provided on the bearing block 2 be fixed on it is interior on 2 inner face of bearing block
Bearing cap 5, the inside cap 5 abut the inner face of cylinder roller bearing outer ring 15, i.e., abut cylinder rolling by inside cap 5
The inner face of sub- bearing outer ring 15, the outer end face of outer ring spacer 17 abut the axis for the component that cascaded surface 18 is realized in the first cylindrical hole
To positioning;It is cased with four-point contact ball outer ring 16 in second cylindrical hole, is additionally provided on the bearing block 2 and is fixed on axis
Outer seal ring 11 on 2 outer end face of bearing;The corresponding cylinder roller bearing outer ring 15, outer ring spacer 17 and four-point contact ball
Cylinder roller bearing inner ring 6, inner ring spacer 7 and the four-point contact ball inner ring 9 that outer ring 16 is arranged are adjacent successively from inside to outside
For interference in shaft 4,6 inner face of cylinder roller bearing inner ring is disposed adjacent the axle sleeve 3 being fixed in shaft 4,
The four-point contact ball inner ring 9 is assembled by interior half-turn and outer half-turn, and the outer end face of the outer half-turn has been disposed adjacent
The speed measuring fluted disc 13 being fixed in shaft 4 realizes the axially position of each component of inner ring by axle sleeve 3 and speed measuring fluted disc 13.Work
When making, cylinder roller bearing bears radial load, and four-point contact ball bears axial load, when installation, cylindrical roller
Bearing and four-point contact ball are packed into bearing block 2 inside and outside bearing block 2 respectively, and cylinder roller bearing outer ring 15 passes through
Inside cap 5 compresses, and greatly reduces the influence of axial cumulative errors when being packed into from a direction.
Further, the width of the four-point contact ball outer ring 16 is less than the axial length of the second cylindrical hole(Here
Although pointing out axial length of the width less than the second cylindrical hole of four-point contact ball outer ring 16, known in those skilled in the art,
Relative size should cannot differ too big in rational range, be intended merely to ensure that four-point contact ball is not subject to add here
Load), four-point contact ball outer ring 16 do not compress, and in the process of running, shaft 4 can occur to thermally expand and occur axial motor
Deformation, four-point contact ball outer ring 16 will move axially in the limited area with the thermal expansion of shaft 4, avoid holding
By additional axial load.Further, the outer end face of the four-point contact ball outer ring 16 is opened up there are two being mutually
180 ° of locating slot corresponds to locating slot on the inner face of outer seal ring 11 and opens up there are two blind hole, every group of corresponding blind hole and fixed
Position slot is all interspersed with a positioning pin 10 jointly, and positioning pin 10 can prevent four-point contact ball outer ring 16 from being rotated together with shaft 4.
Here it opens up there are two the self structure that locating slot is bearing, is standard setting.
As a further improvement of the above technical scheme, radially-inwardly protrusion forms ring to the axial middle part of the outer ring spacer 8
Shape partition board 17, the both sides of the annular partition 17 of the outer ring spacer 8, which are all provided with, mends fat hole.Two, the benefit fat hole pair can be passed through
Bearing chamber each serves as the effect of supplemental lubrication fat, improves the lubricant effect of grease on the whole.
As a further improvement of the above technical scheme, it is provided on the outer end face of the bearing block 2 coaxial with shaft 4
Annular groove, annular groove is interior to be embedded with gasket 12, and gasket 12 is pressed on by outer seal ring 11 in annular groove.Installation
When, outer seal ring 11 is pressed on the outer end face of bearing block 2, belongs to rigid contact, and locating effect is more preferable, while will be in annular groove
Gasket 12 compresses, lift-off seal performance.Further, the outer end of shaft 4 is provided with outer bearing cover 14, the outer bearing cover
14 are fixed on end cap 1, are protected to entire dual bearing structure.
As a kind of preferred connection structure of bearing block 2 and outer seal ring 11, the annular groove inner circumferential is evenly equipped with several
Screw hole, the outer seal ring 11 correspond to screw hole and are provided with several through-holes, and bolt is screwed into screw hole across the through-hole and realizes outer seal ring 11
With the fixation of bearing block 2.
Preferably, 5 bolt of the inside cap is fixed on the inner face of bearing block 2.
Above-mentioned technical proposal is further limited, the inner wall of the four-point contact ball outer ring 16 and bearing block 2 it
Between formed and have the gap, four-point contact ball mainly to axially position, is easy so such structure is easier for installation.
The dual bearing structure of traction electric machine positioning end provided by the invention is installed with the following method:
A. by the interior half-turn interference set of axle sleeve 3, cylinder roller bearing inner ring 6, inner ring spacer 7 and four-point contact ball inner ring 9
In shaft 4,4 component of shaft is formed;
B. outer ring spacer 8 is packed into the first cylindrical hole, it is made to be against on the inner face of the shaft shoulder;
C. cylinder roller bearing outer ring 15 is pressed into the first cylindrical hole, its outer end face is made to be against on the inner face of outer ring spacer 8;
D., inside cap 5 is fixed on to the inner face of bearing block 2, so that it is against on the inner face of cylinder roller bearing 6, preferably adopts
It is fixed with bolt;
E. by 2 component of assembled bearing block in step d(Here 2 component of bearing block includes mainly bearing block 2 and step b-d
It is middle into bearing block 2 or end face installation component)It is inserted in 4 component of assembled shaft in step a(Here 4 component master of shaft
The component that include shaft 4 and be sleeved in shaft 4)On;
F. four-point contact ball outer ring 16 is packed into the second cylindrical hole, here four-point contact ball outer ring 16 and bearing block
It is formed with gap between 2 inner wall, so being inserted in outer ring finally;
It g. will be in the outer half-turn force fit shaft 4 of four-point contact ball inner ring 9;
H. outer seal ring 11 is fixed on the outer end face of bearing block 2;
I. speed measuring fluted disc 13 is fixed in shaft 4, its inner face is made to be against the outer of the outer half-turn of four-point contact ball inner ring 9
On end face.
Further, the rolling element of cylinder roller bearing 6 is mounted in cylindrical roller axis by holder between step d and e
On bearing outer-ring 15;The rolling element of four-point contact ball is mounted in by holder outside four-point contact ball between step f and g
On circle 16.Here holder is just carried when buying bearing, is not required to additionally be arranged.
The above concrete structure and dimension data are to be illustrated to presently preferred embodiments of the present invention, but the present invention creates
It makes and is not limited to the embodiment, those skilled in the art can also make kind under the premise of without prejudice to spirit of that invention
The equivalent variations or replacement, these equivalent deformations or replacement of kind are all contained in the application claim limited range.
Claims (8)
1. a kind of traction electric machine positioning end dual bearing structure, includes the bearing block of fixed setting(2), it is characterised in that:The axis
Bearing(2)It is provided with the stepped hole of single order tapered from inside to outside, the cascaded surface of the stepped hole(18)Positioned at the stepped hole
Middle part, the stepped hole is by being located at cascaded surface(18)First cylindrical hole of inside and be located at cascaded surface(18)Second circle in outside
Post holes forms;It is cased with outer ring spacer in first cylindrical hole(8), the outer ring spacer(8)Outer end face be connected to the rank
Tread(18)On, the outer ring spacer(8)Inner face be disposed adjacent interference in bearing block(2)Cylinder rolling on inner wall
Sub- bearing outer ring(15), the bearing block(2)On be additionally provided with and be fixed on bearing block(2)Inside cap on inner face(5), institute
State inside cap(5)Abut cylinder roller bearing outer ring(15)Inner face;It is cased with four-point contact ball in second cylindrical hole
Bearing outer ring(16), the bearing block(2)On be additionally provided with and be fixed on bearing block(2)Outer seal ring on outer end face(11);It is corresponding
The cylinder roller bearing outer ring(15), outer ring spacer(8)With four-point contact ball outer ring(16)The cylindrical roller axis of setting
Hold inner ring(6), inner ring spacer(7)With four-point contact ball inner ring(9)From inside to outside successively adjacent interference in shaft(4)
On, the cylinder roller bearing inner ring(6)Inner face, which has been disposed adjacent, is fixed on shaft(4)On axle sleeve(3), described 4 points connect
Touch ball bearing inner race(9)By interior half-turn(E)With outer half-turn(F)It is assembled, the outer half-turn(F)Outer end face be disposed adjacent
It is fixed on shaft(4)On speed measuring fluted disc(13).
2. a kind of traction electric machine positioning end dual bearing structure according to claim 1, it is characterised in that:Four point contact
Ball bearing outer ring(16)Width be less than the second cylindrical hole axial length, the four-point contact ball outer ring(16)Outer end
Face opens up that there are two be mutually 180 ° of locating slot, outer seal ring(11)Inner face on correspond to locating slot and offer blind hole at two, often
The corresponding blind hole of group and locating slot are all interspersed with a positioning pin jointly(10).
3. a kind of traction electric machine positioning end dual bearing structure according to claim 1 or 2, it is characterised in that:The outer ring
Spacer(8)Radially-inwardly protrusion forms annular partition at axial middle part(17), the outer ring spacer(8)Annular partition(17)Two
Side, which is all provided with, mends fat hole.
4. a kind of traction electric machine positioning end dual bearing structure according to claim 1, it is characterised in that:The bearing block
(2)Outer end face on be provided with and shaft(4)Coaxial annular groove, annular groove is interior to be embedded with gasket(12), gasket
(12)Pass through outer seal ring(11)It is pressed in annular groove.
5. a kind of traction electric machine positioning end dual bearing structure according to claim 4, it is characterised in that:The annular groove
Inner circumferential is evenly equipped with several screw holes, the outer seal ring(11)Corresponding screw hole is provided with several through-holes, and bolt is twisted across the through-hole
Enter screw hole and realizes outer seal ring(11)With bearing block(2)Fixation.
6. a kind of traction electric machine positioning end dual bearing structure according to claim 1, it is characterised in that:The inside cap
(5)Bolt is fixed on bearing block(2)Inner face.
7. a kind of traction electric machine positioning end dual bearing structure according to claim 1, it is characterised in that:Four point contact
Ball bearing outer ring(16)With bearing block(2)Inner wall between formed and have the gap.
8. a kind of traction electric machine positioning end dual bearing structure according to claim 7, which is characterized in that with the following method
It is installed:
A. by axle sleeve(3), cylinder roller bearing inner ring(6), inner ring spacer(7)With four-point contact ball inner ring(9)Interior half
Interference is enclosed in shaft(4)On;
B. by outer ring spacer(8)It is packed into the first cylindrical hole, it is made to be against cascaded surface(18)On;
C. by cylinder roller bearing outer ring(15)It is pressed into the first cylindrical hole, its outer end face is made to be against outer ring spacer(8)Inner face
On;
D. by inside cap(5)It is fixed on bearing block(2)Inner face, so that it is against cylinder roller bearing outer ring(15)Inner end
On face;
E. by assembled bearing block in step d(2)Component is inserted in assembled shaft in step a(4)On component;
F. by four-point contact ball outer ring(16)It is packed into the second cylindrical hole;
G. by four-point contact ball inner ring(9)Outer half-turn force fit shaft(4)On;
H. by outer seal ring(11)It is fixed on bearing block(2)Outer end face on;
I. by speed measuring fluted disc(13)It is fixed on shaft(4)On, so that its inner face is against four-point contact ball inner ring(9)Outer half
On the outer end face of circle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434078.2A CN108696037A (en) | 2018-05-08 | 2018-05-08 | A kind of traction electric machine positioning end dual bearing structure |
| PCT/CN2018/114165 WO2019214189A1 (en) | 2018-05-08 | 2018-11-06 | Double-bearing structure for positioning end of traction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434078.2A CN108696037A (en) | 2018-05-08 | 2018-05-08 | A kind of traction electric machine positioning end dual bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108696037A true CN108696037A (en) | 2018-10-23 |
Family
ID=63847316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810434078.2A Pending CN108696037A (en) | 2018-05-08 | 2018-05-08 | A kind of traction electric machine positioning end dual bearing structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108696037A (en) |
| WO (1) | WO2019214189A1 (en) |
Cited By (5)
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| CN109494923A (en) * | 2019-01-07 | 2019-03-19 | 中车大连机车研究所有限公司 | AC drive locomotive traction motor bearings non-transmision end mounting structure |
| WO2019214189A1 (en) * | 2018-05-08 | 2019-11-14 | 中车永济电机有限公司 | Double-bearing structure for positioning end of traction motor |
| CN112713726A (en) * | 2020-12-25 | 2021-04-27 | 中车永济电机有限公司 | Traction motor bearing transportation protection tool with shaft extension |
| CN113446322A (en) * | 2021-07-26 | 2021-09-28 | 太原重工股份有限公司 | End shield box cover device of oil film bearing |
| CN113460850A (en) * | 2021-07-28 | 2021-10-01 | 中车永济电机有限公司 | Hoisting assembly tool for split type cylindrical roller bearing outer ring of locomotive traction motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019214189A1 (en) * | 2018-05-08 | 2019-11-14 | 中车永济电机有限公司 | Double-bearing structure for positioning end of traction motor |
| CN109494923A (en) * | 2019-01-07 | 2019-03-19 | 中车大连机车研究所有限公司 | AC drive locomotive traction motor bearings non-transmision end mounting structure |
| CN109494923B (en) * | 2019-01-07 | 2024-04-16 | 中国国家铁路集团有限公司 | Non-transmission end mounting structure of traction motor bearing of alternating current transmission locomotive |
| CN112713726A (en) * | 2020-12-25 | 2021-04-27 | 中车永济电机有限公司 | Traction motor bearing transportation protection tool with shaft extension |
| CN113446322A (en) * | 2021-07-26 | 2021-09-28 | 太原重工股份有限公司 | End shield box cover device of oil film bearing |
| CN113446322B (en) * | 2021-07-26 | 2022-06-14 | 太原重工股份有限公司 | End shield box cover device of oil film bearing |
| CN113460850A (en) * | 2021-07-28 | 2021-10-01 | 中车永济电机有限公司 | Hoisting assembly tool for split type cylindrical roller bearing outer ring of locomotive traction motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019214189A1 (en) | 2019-11-14 |
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