CN109756053B - Locomotive motor bearing lubricating structure - Google Patents
Locomotive motor bearing lubricating structure Download PDFInfo
- Publication number
- CN109756053B CN109756053B CN201711058033.1A CN201711058033A CN109756053B CN 109756053 B CN109756053 B CN 109756053B CN 201711058033 A CN201711058033 A CN 201711058033A CN 109756053 B CN109756053 B CN 109756053B
- Authority
- CN
- China
- Prior art keywords
- bearing
- oil
- motor
- hole
- vent hole
- 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
Images
Abstract
The invention discloses a locomotive motor bearing lubricating structure, wherein a motor comprises a rotating shaft, a bearing inner cover, a bearing, an end cover and a bearing outer cover, the rotating shaft is supported on the end cover through the bearing, the bearing inner cover and the bearing outer cover are respectively arranged on the inner side and the outer side of the bearing, the rotating shaft extends out of the motor and is matched with a gear box, the bearing inner cover is also provided with a first vent hole, the end cover is also provided with a second vent hole, the first vent hole is communicated with the interior of the motor, the second vent hole is communicated with the exterior of the motor, and the first vent hole and the second vent hole are matched for processing negative pressure generated by the motion of the motor, so that the internal pressure and the external pressure of the motor are balanced, and bearing lubricating oil only enters a motor bearing system when the motor operates and does not enter.
Description
Technical Field
The invention relates to the field of motors, in particular to a locomotive motor bearing lubricating structure.
Background
In the operation of a railway locomotive vehicle, a traction motor is one of key components for ensuring the safe operation of the traction motor, a motor bearing is an important component for ensuring the operation of the traction motor, and the reliability and the service life of the motor bearing are directly related to the quality and the safety of transportation.
With the large-scale introduction of railway speed-increasing and high-speed motor train units in China, higher requirements are put forward on the performance and reliability of bearings, and the requirements on bearing lubricating structures are higher and higher.
The bearing is used for supporting radial load caused by the action of the rotor shaft and the linkage shaft joint, and frequent operation is realized. Under normal conditions, lubricating oil enters the inner ring track, the outer ring track, the roller and the support surface of the retainer of the bearing to form a good lubricating film for lubricating and supporting the bearing to rotate.
Referring to fig. 1 and 2, in the prior art, a gear box 31 is provided with a large gear 32 and a small gear 33, an end cover 35 is provided with an oil injection box 34 and an oil storage chamber 36, lubricating oil which lubricates the large gear 32 and the small gear 33 flows into the oil storage chamber 36 through the oil injection box 34, the lower end of the oil storage chamber 36 is provided with an oil inlet 37, and the lubricating oil enters a motor bearing to realize oil lubrication. Although the same lubricant is adopted by the motor and the gear box, the gear box oil is not treated, if the gear box oil is polluted, the gear box oil can directly enter a motor bearing to pollute a bearing system, and the temperature of the motor bearing is overhigh or the motor bearing is abraded.
In actual manufacturing, the motor and the gear box cannot be completely sealed, so that a gap exists between the bearing and the interior of the motor. When the motor runs, negative pressure is formed between the rotor on the rotating shaft of the motor and the bearing chamber, lubricating oil which is not filtered in the gear box can be sucked into the bearing chamber through a gap and sucked into the motor by the negative pressure, an insulation system of the motor is damaged, faults such as grounding or turn-to-turn short circuit of the motor are caused, the motor cannot run normally, major safety accidents are caused seriously, and immeasurable economic loss is brought.
Disclosure of Invention
The invention mainly aims to provide a locomotive motor bearing lubricating structure capable of ensuring the balance of internal and external air pressures of a motor.
The invention provides a locomotive motor bearing lubricating structure, wherein a motor comprises a rotating shaft, a bearing inner cover, a bearing, an end cover and a bearing outer cover, the rotating shaft is supported on the end cover through the bearing, the bearing inner cover and the bearing outer cover are respectively arranged on the inner side and the outer side of the bearing, the rotating shaft extends out of the motor and is matched with a gear box, the bearing inner cover is also provided with a first vent hole, the end cover is also provided with a second vent hole, the first vent hole is communicated with the interior of the motor, the second vent hole is communicated with the exterior of the motor, and the first vent hole and the second vent hole are matched for processing negative pressure generated by the motion of the motor, so that the air pressure in the motor and the air in the motor are balanced.
Preferably, an oil storage chamber is arranged on the outer cover of the bearing, an oil inlet hole is formed in the oil storage chamber, and the oil inlet hole is communicated with the bearing to form an oil inlet channel; the bearing inner cover is provided with a radial seal groove, the radial seal groove is communicated with the bearing, the radial seal groove is provided with an oil return hole, the bearing inner cover is provided with an oil leakage hole, the oil return hole is communicated with the oil leakage hole, the end cover and the bearing outer cover are provided with a first oil discharge hole and a second oil discharge hole which are communicated with each other, the oil leakage hole is communicated with the first oil discharge hole, and the second oil discharge hole is communicated with the gear box to form an oil outlet channel.
Preferably, the first vent hole is located under the radial seal groove, the first vent hole avoids the oil return hole and the oil leakage hole, and the second vent hole avoids the second oil discharge hole.
Preferably, the second ventilation hole can be also connected with an air filter.
Preferably, the top of the oil injection box is provided with a filtering device, and lubricating oil enters the oil injection box after being filtered by the filtering device.
Preferably, the bottom of the oil storage chamber is provided with a magnetic plug.
Preferably, the radial seal groove is formed in the inner diameter of the bearing inner cover, and the oil return hole is formed in the bottom of the radial seal groove.
Preferably, the number of the radial seal grooves is at least 2, and the number of the oil return holes is the same as that of the radial seal grooves.
Preferably, a protective casing is arranged at the second oil drainage hole to prevent the lubricating oil drained from the interior of the motor from being polluted.
The embodiment of the invention provides a locomotive motor bearing lubricating structure, which is characterized in that a first vent hole and a second vent hole which are communicated with each other are arranged between the inside and the outside of a motor, so that the internal and external air pressures of the motor are balanced, bearing lubricating oil is ensured to only enter a motor bearing system and not enter a rotor and other parts when the motor runs, and meanwhile, the cleanness of air entering the motor is ensured through a filtering device arranged at the second vent hole, so that the service life and the safety of the motor are ensured.
Drawings
FIG. 1 is a sectional view of a conventional locomotive motor lubrication structure;
FIG. 2 is a schematic view of a conventional locomotive motor bearing lubrication structure;
FIG. 3 is a schematic view of a lubricating structure of a bearing of a locomotive motor according to an embodiment of the present invention;
FIG. 4 is a sectional view of a bearing lubrication structure of a locomotive motor according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of a lubricating structure for a bearing of a locomotive motor according to an embodiment of the present invention;
FIG. 6 is a schematic view of a motor and a gearbox combination according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Referring to fig. 3 to 6, in the lubricating structure for the bearing of the locomotive motor according to the embodiment of the present invention, the motor includes a bearing outer cover 18, a rotating shaft 19, a bearing inner cover 20, a bearing 21, and an end cover 5, the rotating shaft 19 is supported on the end cover 5 through the bearing 21, the bearing inner cover 20 and the bearing outer cover 18 are respectively installed on the inner side and the outer side of the bearing 21, and the rotating shaft 19 extends out of the motor 10 to be matched with the gear box 1.
The oil injection box 4 is arranged on the bearing outer cover 18, and in the specific implementation, the oil injection box 4 is fixed on the bearing outer cover 18 through casting or welding or bolts, so that the oil injection box 4 and the bearing outer cover 18 form a whole, and the volume of the oil injection box 4 is increased to the maximum extent due to the limitation of the surface size of the bearing outer cover 18 on the oil injection box 4, and the oil injection box 4 is designed into an unconventional shape.
The top of the oil injection box 4 is provided with a filtering device 17 for filtering the lubricating oil entering the oil injection box 4, so that the filtering device 17 can be a simple filter screen or a complex filtering system according to requirements under the condition of ensuring the cleanness of the lubricating oil.
An oil storage chamber 6 is further arranged on the bearing outer cover 18, the oil storage chamber 6 is communicated with the oil injection box 4, a magnetic plug 8 is arranged at the bottom of the oil storage chamber 6, and the magnetic plug 8 at the bottom of the oil storage chamber 6 adsorbs and filters iron pins in lubricating oil, so that the cleanliness of the lubricating oil is further improved.
The upper part of the oil storage chamber 6 is provided with an oil inlet hole 9 for allowing the lubricating oil passing through the hole to enter the bearing 21 to form an oil inlet channel, so that the lubricating oil enters the bearing 21 from the outside of the motor 10 for lubrication.
In other embodiments, the size and shape of the oil inlet hole 9 may be replaced as required without affecting the flow of the lubricating oil.
At least 2 radial seal grooves 13 are formed in the inner diameter of the inner bearing cover 20, and the radial seal grooves 13 are communicated with the bearing 21. The bottom of each radial seal groove 13 is provided with an oil return hole 14, the oil return holes 14 at the bottom of each radial seal groove 13 are communicated with each other, and the oil return holes 14 are communicated with the bearing 21 for self-sealing.
The bearing inner cover 20 is provided with an oil leakage hole 15 and a first vent hole 23, and the oil leakage hole 15 is communicated with an oil return hole 14 at the bottom of each radial seal groove 13; the first air vent 23 avoids the oil leakage hole 15, and one end of the first air vent 23 is connected with the inside of the motor 10.
In other embodiments, the size and shape of the radial seal groove 13 and oil return hole 14 may be replaced as desired without affecting the flow of oil and its lubrication.
The end cover 5 is provided with a first oil discharge hole 16 and a second vent hole 24, and the oil leakage hole 15 is communicated with the first oil discharge hole 16; the second ventilation hole 24 avoids the first oil discharge hole 16, and one end of the second ventilation hole 24 is connected with the atmosphere outside the motor 10.
The air filter 22 is disposed at the second vent 24 to ensure that the air entering the motor 10 from outside is clean air and does not pollute the lubricating oil and the bearing system of the motor 10.
In other embodiments, the air filter 22 at the second vent 24 may be of a different type as desired without affecting the air cleaning and its assembly.
A second oil discharge hole 12 is formed in the bearing outer cover 18, one end of the second oil discharge hole 12 is communicated with the first oil discharge hole 16, and the other end of the second oil discharge hole 12 is communicated with the gear box 1. The second oil discharge hole 12 is provided with a protective casing 11 for protecting the lubricating oil discharged from the inside of the motor 10 from being contaminated, and for preventing the second oil discharge hole 12 from being contaminated by dust or foreign matter.
The radial sealing groove 13, the oil return hole 14, the oil leakage hole 15, the first oil drainage hole 16 and the second oil drainage hole 12 form an oil outlet channel, so that lubricating oil on the bearing 21 flows into the gear box 1 through the radial sealing groove 13, the oil return hole 14, the oil leakage hole 15, the first oil drainage hole 16 and the second oil drainage hole 12, the bearing is well lubricated, the heat of the bearing is favorably taken away, the requirements of high speed and heavy load of a locomotive are effectively met, and the effect of recycling the lubricating oil is also achieved.
The first vent hole 23 is communicated with the second vent hole 24, and the air outside the motor 10 is used for compensating the negative pressure generated when the rotor on the rotating shaft 19 inside the motor 10 rotates, so that the pressure difference inside and outside the motor 10 is balanced, and the lubricating oil is prevented from entering the motor 10 due to the negative pressure.
In other embodiments, the size, shape, number, and angle of the vents may be replaced without affecting the equalization of the internal and external air pressures of the motor 10.
According to the bearing lubricating structure of the locomotive motor 10, lubricating oil flows into the oil injection box 4 after being injected into the filtering device 17, then enters the oil storage chamber 6, is adsorbed by the magnetic screwed iron pin at the bottom of the oil storage chamber 6, then enters the bearing 21 through the oil inlet hole 9 at the upper part of the oil storage chamber 6, splashes to the radial sealing groove 13 on the inner diameter of the bearing inner cover 20 due to the rotation of the bearing 21, then flows into the oil leakage hole 15 on the bearing inner cover 20 through the oil return hole 14 at the bottom of the radial sealing groove 13, then enters the first oil discharge hole 16 on the end cover 5, finally flows into the second oil discharge hole 12 on the bearing outer cover 18, and is discharged through the oil discharge hole 12 and then flows to the gear box 1 to lubricate the large gear 2.
The invention has the advantages of ingenious design and many advantages. The motor includes pivot, bearing inner cup, bearing, end cover, bearing enclosing cover, the pivot passes through the bearing support in on the end cover, the bearing inner cup of institute the bearing enclosing cover is installed respectively the inside and outside of bearing, the pivot stretches out the motor outside with the gear box cooperation, the bearing inner cup still is equipped with first air vent, and the end cover still is equipped with the second air vent, and first air vent communicates with each other with the motor is inside, and the second air vent communicates with each other with the motor is outside, and first air vent uses the negative pressure that produces the motor motion with the cooperation of second air vent to handle, makes the motor in, the external atmospheric pressure balanced, guarantees that the motor operation bearing lubricating oil only gets into motor bearing system, and does not get into rotor and other positions, has increased life-span and the security of motor use.
The air holes on the inner cover and the cover end of the bearing are mutually matched and the air holes and the oil holes are not interfered with each other, so that the air pressure inside the motor is the same as the air pressure outside the motor, the negative pressure cannot be formed inside the motor when the rotor operates and the oil cannot be absorbed from the bearing chamber, and the air holes and the oil holes are not interfered with each other to ensure the smoothness of the air holes and the oil holes, thereby ensuring the operation safety of the motor.
Through set up filter equipment at notes oil box top and second gas pocket department, reinforcing lubricating oil and the inside cleanliness of air admission motor, and set up the protection casing at the bearing enclosing cover and prevent that lubricating oil from polluting behind the inside outflow motor, guarantee the cleanliness of motor during operation lubricating oil, further increased life-span and the security of motor use.
Through setting up a plurality of radial seal grooves and making the communicating oil gallery of frequent seal groove can furthest collect the lubricating oil that the bearing splashes when rotating to can discharge in the shortest time, thereby guarantee can not leach into motor inside because lubricating oil is too much from the sealing washer, guaranteed the safety of the inside device of motor.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a locomotive motor bearing lubricating structure, motor (10) are including pivot (19), bearing inner cup (20), bearing (21), end cover (5), bearing enclosing cover (18) and gear box (1), pivot (19) pass through bearing (21) support in on end cover (5), bearing inner cup (20) bearing enclosing cover (18) are installed respectively the inboard and outboard of bearing (21), pivot (19) stretch out motor (10) outside with gear box (1) cooperation, a serial communication port, motor (10) outside with warp between bearing (21) bearing enclosing cover (18) are equipped with the oil feed passageway, bearing (21) with pass through between motor (10) outside bearing inner cup (20), bearing enclosing cover (18) are equipped with out the oil passageway, make lubricating oil follow motor (10) outside gets into bearing (21) flow out again motor (10) outside extremely gear box (1) The bearing inner cover (20) is further provided with a first vent hole (23) and is provided with a radial seal groove (13), the radial seal groove (13) is communicated with the bearing (21), the first vent hole (23) is positioned under the radial seal groove (13), the first vent hole (23) is communicated with the radial seal groove (13), the oil outlet channel comprises an oil return hole (14) which is arranged on the radial seal groove (13), the bearing inner cover (20) is provided with an oil leakage hole (15), and the end cover (5) and the bearing outer cover (18) are provided with a first oil drainage hole (16) and a second oil drainage hole (12) which are communicated with each other, the oil return hole (14) is communicated with the oil leakage hole (15), the oil leakage hole (15) is communicated with the first oil drainage hole (16), and the second oil drainage hole (12) is communicated with the gear box (1), the end cover (5) is further provided with a second vent hole (24), the first vent hole (23) is communicated with the interior of the motor (10), the second vent hole (24) is communicated with the exterior of the motor (10), and the internal and external air pressures of the motor (10) are balanced through the first vent hole (23) and the second vent hole (24).
2. A locomotive motor bearing lubrication structure according to claim 1, wherein an oil storage chamber (6) is provided on the bearing outer cover (18), the oil storage chamber (6) is provided with an oil inlet hole (9), and the oil inlet hole (9) is communicated with the bearing (21) to form an oil inlet channel.
3. The locomotive motor bearing lubricating structure according to claim 2, wherein the first vent hole (23) avoids an oil return hole (14) and the oil leakage hole (15), and the second vent hole (24) avoids the first oil discharge hole (16).
4. The locomotive motor bearing lubrication structure according to claim 3, wherein the second vent hole (24) is connected to an air filter (22).
5. A locomotive motor bearing lubrication structure as claimed in claim 2, wherein said bearing outer cover (18) is provided with an oil injection box (4) communicating with said oil storage chamber (6), a filter device (17) is provided on the top of said oil injection box (4), and the lubricating oil is filtered by said filter device (17) and then enters into said oil injection box (4).
6. A locomotive motor bearing lubrication structure as claimed in claim 2, characterized in that a magnetic plug (8) is provided at the bottom of said oil storage chamber (6).
7. A locomotive motor bearing lubrication structure as claimed in claim 2, characterized in that said radial seal groove (13) is opened on said inner diameter of said bearing inner cover (20), and said oil return hole (14) is opened at the bottom of said radial seal groove (13).
8. The locomotive motor bearing lubrication structure according to claim 7, wherein the number of the radial seal grooves (13) is at least 2, and the number of the oil return holes (14) is the same as the number of the radial seal grooves (13).
9. A locomotive motor bearing lubrication structure as claimed in claim 2, wherein said second oil discharge hole (12) is provided with a protection casing (11) for protecting the lubricant oil discharged from the interior of the motor from being contaminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058033.1A CN109756053B (en) | 2017-11-01 | 2017-11-01 | Locomotive motor bearing lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058033.1A CN109756053B (en) | 2017-11-01 | 2017-11-01 | Locomotive motor bearing lubricating structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109756053A CN109756053A (en) | 2019-05-14 |
| CN109756053B true CN109756053B (en) | 2021-04-02 |
Family
ID=66398875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711058033.1A Active CN109756053B (en) | 2017-11-01 | 2017-11-01 | Locomotive motor bearing lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109756053B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021007793A1 (en) * | 2019-07-17 | 2021-01-21 | 成都中车电机有限公司 | Bearing sealing structure of traction electric motor, and mounting method |
| CN111256012A (en) * | 2020-03-11 | 2020-06-09 | 淮南师范学院 | Motor oiling structure |
| CN111969765B (en) * | 2020-08-26 | 2021-08-03 | 六安华科电机有限公司 | Three-phase motor with good anti-shake performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106566A (en) * | 2000-09-27 | 2002-04-10 | Canon Inc | Hydrodynamic bearing device, rotary device and deflection scanning device |
| 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 |
| CN101552514A (en) * | 2009-05-14 | 2009-10-07 | 永济新时速电机电器有限责任公司 | High-rotating-speed pulling motor |
| CN201526664U (en) * | 2009-11-13 | 2010-07-14 | 中国北车集团大同电力机车有限责任公司 | Thin oil lubrication circuit of drive gearbox of railroad rolling stock |
-
2017
- 2017-11-01 CN CN201711058033.1A patent/CN109756053B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106566A (en) * | 2000-09-27 | 2002-04-10 | Canon Inc | Hydrodynamic bearing device, rotary device and deflection scanning device |
| 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 |
| CN101552514A (en) * | 2009-05-14 | 2009-10-07 | 永济新时速电机电器有限责任公司 | High-rotating-speed pulling motor |
| CN201526664U (en) * | 2009-11-13 | 2010-07-14 | 中国北车集团大同电力机车有限责任公司 | Thin oil lubrication circuit of drive gearbox of railroad rolling stock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109756053A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109756053B (en) | Locomotive motor bearing lubricating structure | |
| US7040811B2 (en) | Oil-damped sealed rolling bearing | |
| CN101235730B (en) | Gas turbine engine with a gearbox-mounted starter | |
| CN101552514B (en) | High-rotating-speed pulling motor | |
| CA2560633A1 (en) | Air/oil separation system and method | |
| WO2019218617A1 (en) | Multi-functional electric motor bearing sealing structure | |
| CN107869481A (en) | A kind of self-lubricating bearing case of photo-thermal power station pump for liquid salts | |
| CA2548051C (en) | Helicopter drive with air-oil separator | |
| CN205207250U (en) | Be applied to bearing mounting structure of high dust -laden occasion | |
| CN102361697B (en) | For the safety valve of whizzer | |
| CN104896291A (en) | Self-pumped water-turbine generator set bearing oil mist absorption device | |
| CN207111896U (en) | MPV axle gear box sealing structure | |
| DE4403776C2 (en) | Seal with labyrinthine sealing gap | |
| US3392804A (en) | Lubrication system | |
| CN204772051U (en) | Shaft seal system | |
| CN217108167U (en) | Oil sealing structure of gear box | |
| CA2801892A1 (en) | Venturi drain for self-pumping bearing rolling mills | |
| CN111957706B (en) | Special workshop for oil drainage of scraped vehicle and oil drainage process thereof | |
| DE102010038524B4 (en) | Turbo engine | |
| CN210287255U (en) | Lubricating oil self-circulation filtering and recovering device | |
| CN107763192A (en) | A kind of central reducer unit bearing lubrication structure | |
| CN210152960U (en) | Oil leakage prevention fan bearing box | |
| CN206190585U (en) | Water pump rotary shaft seal drainage structures | |
| CN113958693B (en) | Oil field horizontal speed reducer splash lubrication's sealing device | |
| CN104242550B (en) | High temperature resistant high sealing food oil blood circulation motor special |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |