CN109519479B - Rail vehicle and traction motor thereof - Google Patents

Rail vehicle and traction motor thereof Download PDF

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Publication number
CN109519479B
CN109519479B CN201710842849.7A CN201710842849A CN109519479B CN 109519479 B CN109519479 B CN 109519479B CN 201710842849 A CN201710842849 A CN 201710842849A CN 109519479 B CN109519479 B CN 109519479B
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China
Prior art keywords
bearing
grease
storage chamber
traction motor
annular groove
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CN201710842849.7A
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CN109519479A (en
Inventor
冯守智
罗英露
王健
李伟业
刘雄
盛振强
何思源
刘春秀
李坤
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CRRC Zhuzhou Institute Co Ltd
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CRRC Zhuzhou Institute Co Ltd
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Priority to CN201710842849.7A priority Critical patent/CN109519479B/en
Publication of CN109519479A publication Critical patent/CN109519479A/en
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6622—Details of supply and/or removal of the grease, e.g. purging grease
    • 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
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention discloses a traction motor, which comprises an outer bearing oil seal, a bearing and an inner bearing oil seal which are sequentially arranged along the axial direction, wherein an outer oil seal oil storage chamber is arranged in the outer bearing oil seal, an inner oil seal oil storage chamber is arranged in the inner bearing oil seal, the traction motor also comprises an annular grease pocket, the annular grease pocket comprises an annular groove and a control piece, the annular groove is coaxially arranged with the bearing, the control piece is used for driving the annular groove to move to contact with the bearing along the axial direction or to be away from the bearing along the axial direction, the annular groove is arranged in the outer oil seal oil storage chamber or the inner oil seal oil storage chamber, one end of the annular groove, which is close to the bearing in the axial direction. Old grease in the bearing of the traction motor can be completely replaced during grease supplementing maintenance. The invention also discloses a railway vehicle comprising the traction motor, wherein old lubricating grease in a bearing of the traction motor can be completely replaced during grease supplementing maintenance.

Description

Rail vehicle and traction motor thereof
Technical Field
The invention relates to the technical field of motors, in particular to a traction motor. The invention further relates to a rail vehicle comprising the traction motor.
Background
Generally, a rolling bearing is used for a rotor of a traction motor for a rail transit vehicle, and grease lubrication is mainly used.
The grease supplementing maintenance of the traction motor bearing 02 for the rail transit vehicle is a key link for guaranteeing the service life of the traction motor bearing 02. Referring to fig. 1, fig. 1 is a schematic structural diagram of a traction motor in the prior art, oil storage chambers are respectively disposed at two sides of a bearing 02, lubricating grease is disposed in both the oil storage chambers in the bearing 02, and an injection port for injecting or supplementing grease is disposed on an end cover 06 of a motor, and the injection port is correspondingly disposed in one of the oil storage chambers. When the bearing 02 is maintained and added with grease, new grease 08 is added into the oil storage chamber through the oil injection pipeline in the end cover 06, and old grease 07 in the oil storage chamber and the bearing 02 is replaced, so that the old grease 07 is extruded out from the oil storage chamber and the bearing 02.
However, a part of the grease may be aged and hardened in the oil storage chamber to block the bearing 02, and in the grease supply process, the old grease 07 in the oil storage chamber and the bearing 02 may not be discharged and directly discharged after the new grease 08 enters the oil storage chamber due to the shielding of the aged old grease 07, so that the old grease 07 in the bearing 02 may not be replaced at all. In the bearing 02, if the old grease 07 cannot be completely replaced with the new grease 08, the lubrication effect cannot be ensured, and the reliable operation of the bearing 02 and the service life of the bearing 02 cannot be ensured.
Therefore, how to completely replace old grease in the bearing is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention aims to provide a traction motor, wherein old grease in a bearing can be completely replaced during grease filling maintenance. Another object of the present invention is to provide a railway vehicle comprising the traction motor described above, the old grease in the bearings of the traction motor of which can be completely replaced at the time of grease replenishment maintenance.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a traction motor, includes the outer oil blanket of bearing, bearing and the interior oil blanket of bearing that sets gradually along the axial, be equipped with outer oil blanket oil storage chamber in the outer oil blanket of bearing, be equipped with interior oil blanket oil storage chamber in the bearing, still include cyclic annular fat pocket, cyclic annular fat pocket include with the ring channel of the coaxial setting of bearing with be used for driving the ring channel is along axial displacement to contact the bearing or keep away from along the axial the control of bearing, the ring channel is located outer oil blanket oil storage chamber or in the interior oil blanket oil storage chamber, the ring channel is close to in the axial the one end opening of bearing is just kept away from the one end of bearing is sealed, the bearing is close to one side of cyclic annular fat pocket is equipped with the benefit fat mouth.
Preferably, the annular groove is arranged in the outer oil seal oil storage chamber, the bearing outer oil seal upper cover is provided with a bearing outer cover, and a control cavity communicated with the outer oil seal oil storage chamber is arranged in the bearing outer cover; the control piece comprises an annular grease pocket positioning bolt penetrating through the outer bearing cover and extending into the control cavity and a fixing plate fixedly arranged on the periphery of the annular groove, the fixing plate is arranged in the control cavity, a threaded hole corresponding to the annular grease pocket positioning bolt is formed in the fixing plate, and the annular grease pocket positioning bolt drives the fixing plate to axially move in the control cavity when rotating.
Preferably, the fixing plate is an annular plate disposed around a central axis of the annular groove, and the control chamber is correspondingly an annular chamber.
Preferably, the annular grease pocket positioning bolts are at least two, and all of the annular grease pocket positioning bolts are arranged at equal intervals along the circumferential direction.
Preferably, an end cover is arranged on the upper cover of the oil seal in the bearing, a grease supplementing inlet is arranged on the end cover, the grease supplementing inlet is communicated with the grease supplementing port through a grease supplementing passage, and the grease supplementing port is arranged on the inner circumferential surface of the oil seal outside the bearing; when the annular groove is far away from the bearing along the axial direction and moves to a preset position, the outer oil seal oil storage chamber is communicated with the grease supplementing passage, and when the annular groove moves to contact the bearing along the axial direction, the peripheral surface of the annular groove seals the grease supplementing port.
Preferably, when the annular groove is far away from the bearing along the axial direction and moves to a preset position, the grease supplementing passage is communicated with the outer oil seal oil storage chamber, and the peripheral surface of the annular groove separates the outer oil seal oil storage chamber and the control cavity.
Preferably, the fat supplementing openings are at least two, and all the fat supplementing openings are sequentially arranged along the circumferential direction.
A rail vehicle comprising a traction motor, the traction motor being as claimed in any one of the preceding claims.
According to the traction motor provided by the invention, the annular grease pocket is additionally arranged in the traction motor, so that lubricating grease aged and blocked on the bearing can be removed during grease supplementing maintenance, a grease supplementing port can be directly supplemented towards the bearing, and the lubricating grease in the bearing can be completely extruded and replaced, so that the complete replacement of the lubricating grease in the bearing can be realized, the replacement effect of new and old lubricating grease in an oil storage chamber and the bearing is ensured, the grease supplementing amount can be reasonably controlled, the reasonable grease supplementing can be realized, the phenomenon that redundant lubricating grease in the bearing cannot be completely extruded into the oil storage chamber is avoided, and the poor lubricating effect caused by insufficient grease supplementing amount is avoided. In addition, because the grease supplementing operation is convenient, a certain amount of new lubricating grease can be supplemented frequently, so that a stable lubricating effect can be achieved under the condition of not disassembling the bearing.
The invention provides a railway vehicle comprising the traction motor, wherein old grease in a bearing of the traction motor can be completely replaced during grease supplementing maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a traction motor of the prior art;
FIG. 2 is a schematic structural diagram of a traction motor provided by the present invention before grease replenishment;
FIG. 3 is a schematic structural diagram of a traction motor in grease filling according to the present invention;
fig. 4 is a schematic structural diagram of the traction motor provided by the invention after being filled with grease.
In fig. 1:
02-bearing, 06-end cover, 07-old lubricating grease and 08-new lubricating grease;
in fig. 2 to 4:
1-rotating shaft, 2-bearing, 3-bearing outer oil seal, 4-bearing inner oil seal, 5-bearing outer cover, 6-end cover, 7-old lubricating grease, 8-new lubricating grease, 9-annular grease pocket positioning bolt, 10-annular grease pocket, 11-control cavity, 12-outer oil seal oil storage chamber, 13-grease supplementing port, 14-grease supplementing passage, 15-inner oil seal oil storage chamber, 16-annular groove and 17-fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a traction motor, wherein old lubricating grease in a bearing can be completely replaced during grease supplementing maintenance. Another core of the invention is to provide a rail vehicle comprising the traction motor described above, wherein old grease in the bearings of the traction motor can be completely replaced during greasing maintenance.
The traction motor comprises an outer bearing oil seal 3, a bearing 2 and an inner bearing oil seal 4 which are sequentially arranged along the axial direction, wherein an outer oil seal oil storage chamber 12 is arranged in the outer bearing oil seal 3, and an inner oil seal oil storage chamber 15 is arranged in the inner bearing oil seal 4. The traction motor further comprises an annular grease pocket 10, wherein the annular grease pocket 10 comprises an annular groove 16 which is coaxially arranged with the bearing 2 and a control piece which is used for driving the annular groove 16 to move along the axial direction to be in contact with the bearing 2 or to be far away from the bearing 2 along the axial direction. The annular groove 16 is provided in the outer oil seal oil storage chamber 12 or the inner oil seal oil storage chamber 15, one end of the annular groove 16 close to the bearing 2 in the axial direction is open and one end of the annular groove 16 far from the bearing 2 is sealed, the annular groove 16 can store lubricating grease, which is equivalent to a movable oil storage chamber, in the state that the annular groove 16 contacts the bearing 2, the lubricating grease stored in the annular groove 16 can maintain a good lubricating state near the bearing 2, and the old lubricating grease 7 in the annular groove 16 is separated from the bearing 2 by being far from the bearing 2 and the annular groove 16. One side of the bearing 2 close to the annular grease pocket 10 is provided with a grease supplementing port 13.
The bearing 2 is sleeved on the rotating shaft 1, and the rotating shaft 1 bears a rotating part of the motor; the bearing 2 bears the rotating shaft 1; the bearing outer oil seal 3 is a housing having a substantially cylindrical shape with an axial or radial seal groove against the bearing inner race; the in-bearing oil seal 4 is a housing having a substantially cylindrical shape with an axial or radial seal groove against the bearing inner race.
The grease replenishment process will be described by taking as an example that the annular grease pocket 10 is provided in the outer oil-sealed oil storage chamber 12:
referring to fig. 2, before the grease is replenished, the open end face of the annular groove 16 is in contact with the bearing 2, the annular groove 16 is filled with grease, and during a long period of operation, a part of the grease may be aged in the annular groove 16, and at the same time, since the annular groove 16 is in contact with the bearing 2 before the grease is replenished, it is ensured that the aged grease can be completely retained in the annular groove 16 on the side of the bearing 2 where the annular groove 16 is provided.
Referring to fig. 3, in the grease supplying process, the control member controls the annular groove 16 to stop at a preset position axially away from the bearing 2, the aged grease in the annular groove 16 moves synchronously with the annular groove 16, at this time, a certain space is left in the outer oil seal oil storage chamber 12 close to the bearing 2, because the side of the bearing 2 axially close to the annular grease pocket 10 is not obstructed by other components and aged grease, the grease supplying port 13 can supply grease directly towards the bearing 2, specifically, new grease can be transferred to the bearing 2 through the space left in the outer oil seal oil storage chamber 12 and enter the inner oil seal oil storage chamber 15 through the bearing 2 until old grease 7 in the bearing 2 and in the inner oil seal oil storage chamber 15 is extruded out, and when a certain amount of new grease 8 is supplied, the control member controls the annular groove 16 to move towards the bearing 2, so that new grease 8 in the cavity of the outer oil seal oil storage chamber 12 can be further extruded into the bearing 2, complete replacement of new and old grease in the bearing 2 is reliably achieved, and even if the internal state of the bearing 2 cannot be confirmed, it is ensured that a certain amount of new grease 8 is replenished in the bearing 2.
Wherein, the grease supplementing quantity can be calculated according to the sizes of the annular grease pocket 10 and the oil storage chamber so as to realize the complete replacement of the new grease and the old grease.
Referring to fig. 4, after the grease is replenished, the open end face of the annular groove 16 is in contact with the bearing 2, and a certain amount of old grease 7 that has not been replaced may remain in the annular groove 16.
Of course, when the annular grease pocket 10 is provided in the inner oil-sealed oil storage chamber 15, the grease replenishment process can be referred to the above process.
It can be seen that, in this embodiment, through add cyclic annular fat pocket 10 in traction motor, can will age and keep off the lubricating grease on bearing 2 when mending that fat is maintained and remove, mend fat mouth 13 can directly mend fat towards bearing 2, the change can be extruded completely to the lubricating grease in the bearing 2, thereby can realize the complete change to the lubricating grease in the bearing 2, guarantee in the oil storage chamber, the replacement effect of new and old lubricating grease in the bearing 2, and mend the fat volume and can carry out reasonable control, can realize reasonable mend fat, avoid unnecessary lubricating grease can not be extruded the oil storage chamber completely in the bearing 2, and it is not good to avoid mending that the fat volume is not enough lubricated effect. In addition, since the grease replenishment operation is convenient, a certain amount of new grease 8 can be frequently replenished to obtain a stable lubrication effect under the condition of not disassembling the bearing 2.
On the basis of the above embodiment, the annular groove 16 may be specifically provided in the outer oil-sealed oil storage chamber 12, the bearing outer oil seal 3 is covered by the bearing outer cover 5, and the bearing outer cover 5 is provided with the control cavity 11 communicated with the outer oil-sealed oil storage chamber 12. Wherein the bearing outer cover 5 is a housing having a substantially cylindrical shape with an axial or radial sealing groove against the bearing outer ring. The control piece can comprise an annular grease pocket positioning bolt 9 which penetrates through the bearing outer cover 5 and extends into the control cavity 11 and a fixing plate 17 fixedly arranged on the periphery of the annular groove 16, the fixing plate 17 is arranged in the control cavity 11, a threaded hole corresponding to the annular grease pocket positioning bolt 9 is formed in the fixing plate 17, and the annular grease pocket positioning bolt 9 drives the fixing plate 17 to axially move in the control cavity 11 when rotating.
In this embodiment, the annular groove 16 is disposed in the outer oil seal oil storage chamber 12, accordingly, the bearing outer cover 5 is correspondingly provided with the annular grease pocket positioning bolt 9, the annular grease pocket positioning bolt 9 is matched with the threaded hole on the fixing plate 17, and the fixing plate 17 and the annular groove 16 are driven to synchronously move axially when the annular grease pocket positioning bolt 9 rotates. Since the bearing outer cover 5 is positioned outside the motor, the rotation operation of the annular grease pocket positioning bolt 9 is facilitated.
In particular, the fixing plate 17 may be an annular plate disposed around the central axis of the annular groove 16, and the control chamber 11 corresponds to an annular chamber. Further, the radial cross section of the fixing plate 17 and the annular groove 16 may be F-shaped, and accordingly, the outer oil-sealed oil storage chamber 12 communicates with the control chamber 11 to form a chamber with an L-shaped radial cross section. The fixed plate 17 is an annular plate, which is beneficial to reducing the installation difficulty and enables the fixed plate 17 to better adapt to the installation environment.
Furthermore, the number of the annular grease pocket positioning bolts 9 can be at least two, and all the annular grease pocket positioning bolts 9 are arranged at equal intervals along the circumferential direction so as to ensure that all the annular grease pockets 10 are stressed more evenly.
In addition to the above embodiments, the bearing inner oil seal 4 is covered with the end cover 6, the end cover 6 may be provided with a grease supply inlet, the grease supply inlet is communicated with the grease supply port 13 through the grease supply passage 14, and the grease supply port 13 is provided on the inner circumferential surface of the bearing outer oil seal 3. When the annular groove 16 moves away from the bearing 2 in the axial direction to a preset position, the outer oil seal oil storage chamber 12 is communicated with the grease supplementing passage 14, and when the annular groove 16 moves in the axial direction to contact the bearing 2, the outer peripheral surface of the annular groove 16 seals the grease supplementing port 13. The end cap 6 is a housing having a substantially cylindrical shape, is fixed to the motor base and the support bearing 2, and has an axial or radial sealing groove against the outer ring of the bearing.
The specific extension shape of the fat filling path 14 may be set according to the actual situation. Through the inlet and outlet arrangement of the grease supply passage 14 in the embodiment, grease supply is convenient, and when the bearing 2 normally operates, the grease supply port 13 is sealed by the annular groove 16, and lubricating grease cannot leak out from the grease supply port 13, so that the operation reliability can be ensured.
On the basis of the above-described embodiments, when the annular groove 16 is moved away from the bearing 2 in the axial direction to a predetermined position, the grease replenishment passage 14 communicates with the outer oil seal oil storage chamber 12, and the outer peripheral surface of the annular groove 16 can block the outer oil seal oil storage chamber 12 and the control chamber 11.
Taking the example that the control cavity 11 is communicated with the outer oil seal oil storage chamber 12 to form an L-shaped cavity, and the annular groove 16 and the fixing plate 17 form an F-shaped structure with a radial cross section, in the radial direction, the control cavity 11 is located at the outer side, the outer oil seal oil storage chamber 12 is located at the inner side, and the axial length of the control cavity 11 is smaller than that of the outer oil seal oil storage chamber 12, the axial length of the interface of the control cavity 11 and the outer oil seal oil storage chamber 12 can be smaller than that of the annular groove 16, when the annular groove 16 moves away from the bearing 2 in the axial direction to the farthest position and stops, the peripheral surface of the annular groove 16 covers the interface of the control cavity 11 and the outer oil seal oil storage chamber 12, so that.
Through the setting of this embodiment, can avoid in mending the new lubricating grease 8 of fat in-process through outer oil blanket oil storage chamber 12 entering control chamber 11, improve the reliability of mending fat, and the clearance of the control chamber 11 of being convenient for.
On the basis of the above embodiments, at least two grease filling ports 13 may be provided, and all the grease filling ports 13 are sequentially arranged along the circumferential direction, and may be specifically arranged at equal intervals. By arranging the plurality of grease supplementing ports 13 along the circumferential direction, uniform grease supplementing can be performed on the bearing inner ring without a conventional method of reducing the rotation speed of the traction motor during grease supplementing.
In addition to the traction motor, the invention also provides a railway vehicle comprising the traction motor disclosed in the embodiment, and the railway vehicle adopts the traction motor, so that old grease in a bearing of the traction motor can be completely replaced during grease filling maintenance. The structure of other parts of the electric traction motor refers to the prior art, and is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The rail vehicle and the traction motor thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a traction motor, includes along the outer oil blanket of bearing (3), bearing (2) and the interior oil blanket of bearing (4) that the axial set gradually, be equipped with outer oil blanket oil storage chamber (12) in the outer oil blanket of bearing (3), be equipped with interior oil blanket oil storage chamber (15) in the oil blanket (4) in the bearing, its characterized in that still includes cyclic annular fat pocket (10), cyclic annular fat pocket (10) include with ring channel (16) of bearing (2) coaxial setting with be used for driving ring channel (16) are along axial displacement to the contact bearing (2) or keep away from along the axial the control of bearing (2), ring channel (16) are located outer oil blanket oil storage chamber (12) or in interior oil blanket oil storage chamber (15), ring channel (16) are close to in the axial the one end opening of bearing (2) and keep away from the one end of bearing (2) is sealed, a grease supplementing opening (13) is formed in one side, close to the annular grease pocket (10), of the bearing (2); after the grease is supplemented, the opening end surface of the annular groove (16) is contacted with the bearing (2).
2. The traction motor according to claim 1, wherein the annular groove (16) is arranged in the outer oil seal oil storage chamber (12), the bearing outer oil seal (3) is covered by a bearing outer cover (5), and a control cavity (11) communicated with the outer oil seal oil storage chamber (12) is arranged in the bearing outer cover (5); the control piece is including running through bearing enclosing cover (5) and stretching into cyclic annular fat pocket positioning bolt (9) in control chamber (11) and fixed locating ring channel (16) outlying fixed plate (17), fixed plate (17) are located in control chamber (11), be equipped with on fixed plate (17) with the corresponding screw hole of cyclic annular fat pocket positioning bolt (9), cyclic annular fat pocket positioning bolt (9) drive when rotating fixed plate (17) are in axial displacement in control chamber (11).
3. A traction motor according to claim 2, characterized in that the fixing plate (17) is an annular plate arranged around the central axis of the annular groove (16) and the control chamber (11) corresponds to an annular chamber.
4. The traction motor according to claim 3, wherein the number of the ring-shaped grease pocket positioning bolts (9) is at least two, and all the ring-shaped grease pocket positioning bolts (9) are arranged at equal intervals in the circumferential direction.
5. The traction motor according to claim 4, wherein an end cover (6) is arranged on the upper cover of the bearing inner oil seal (4), a grease supplementing inlet is arranged on the end cover (6), the grease supplementing inlet is communicated with the grease supplementing port (13) through a grease supplementing passage (14), and the grease supplementing port (13) is arranged on the inner circumferential surface of the bearing outer oil seal (3); the annular groove (16) is far away from along the axial direction when the bearing (2) moves to a preset position, the outer oil seal oil storage chamber (12) is communicated with the grease supplementing passage (14), the annular groove (16) moves to contact along the axial direction when the bearing (2) is moved, the peripheral surface of the annular groove (16) is sealed, and the grease supplementing port (13) is formed.
6. The traction motor according to claim 5, wherein when the annular groove (16) moves away from the bearing (2) in the axial direction to a preset position, the grease supply passage (14) communicates with the outer oil seal oil storage chamber (12), and the outer peripheral surface of the annular groove (16) partitions the outer oil seal oil storage chamber (12) and the control chamber (11).
7. The traction motor according to claim 6, wherein there are at least two grease supply ports (13), and all the grease supply ports (13) are arranged in sequence in the circumferential direction.
8. A rail vehicle comprising a traction motor, characterized in that the traction motor is according to any one of claims 1 to 7.
CN201710842849.7A 2017-09-18 2017-09-18 Rail vehicle and traction motor thereof Active CN109519479B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710842849.7A CN109519479B (en) 2017-09-18 2017-09-18 Rail vehicle and traction motor thereof

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Application Number Priority Date Filing Date Title
CN201710842849.7A CN109519479B (en) 2017-09-18 2017-09-18 Rail vehicle and traction motor thereof

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CN109519479A CN109519479A (en) 2019-03-26
CN109519479B true CN109519479B (en) 2020-05-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113659758A (en) * 2021-06-30 2021-11-16 中车株洲电机有限公司 Permanent magnet traction motor bearing configuration structure and sealing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007285517A (en) * 2006-03-24 2007-11-01 Railway Technical Res Inst Lubricating structure of bearing
CN101338851A (en) * 2008-08-06 2009-01-07 永济新时速电机电器有限责任公司 Pulling motor for locomotive
JP2010230025A (en) * 2009-03-26 2010-10-14 Railway Technical Res Inst Lubricating structure of bearing
CN203115457U (en) * 2013-01-22 2013-08-07 西安正麒电气有限公司 Motor bearing oil lubrication structure
CN204013030U (en) * 2014-08-21 2014-12-10 永济新时速电机电器有限责任公司 A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007285517A (en) * 2006-03-24 2007-11-01 Railway Technical Res Inst Lubricating structure of bearing
CN101338851A (en) * 2008-08-06 2009-01-07 永济新时速电机电器有限责任公司 Pulling motor for locomotive
JP2010230025A (en) * 2009-03-26 2010-10-14 Railway Technical Res Inst Lubricating structure of bearing
CN203115457U (en) * 2013-01-22 2013-08-07 西安正麒电气有限公司 Motor bearing oil lubrication structure
CN204013030U (en) * 2014-08-21 2014-12-10 永济新时速电机电器有限责任公司 A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system

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