CN107100940A - A kind of lubrication system of motor - Google Patents
A kind of lubrication system of motor Download PDFInfo
- Publication number
- CN107100940A CN107100940A CN201710356996.3A CN201710356996A CN107100940A CN 107100940 A CN107100940 A CN 107100940A CN 201710356996 A CN201710356996 A CN 201710356996A CN 107100940 A CN107100940 A CN 107100940A
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- Prior art keywords
- oil
- bearing
- lubrication system
- passage
- groove
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Classifications
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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
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a kind of lubrication system of motor, belong to technical field of motor manufacture.It solves the technical problems such as existing motor manufacturing cost is high, lubricating oil is easily revealed.This motor includes end cap, bearing and the rotating shaft being located in bearing, lubrication system includes the oil inlet passage and oil discharge passage being opened in respectively on end cap, inner oil seal is arranged with rotating shaft, outer peripheral face and the inner oil seal and end cap of rotating shaft are collectively forming bearing chamber, and bearing is located in bearing chamber；One group of broach groove is offered on the inwall of inner oil seal, oil inlet passage and oil discharge passage are connected with bearing chamber, also there is the excessively oily passage for connecting broach groove and oil discharge passage between broach groove and oil discharge passage；Lubrication system is additionally included in the outside oil circuit that connection oil inlet passage and oil discharge passage outside end cap form it into circulation loop.Set in the present invention after broach slot structure, can effectively reduce the sealing parts at the leakage of greasing substance, motor bearings and reduce, reduce motor production cost.
Description
Technical field
The invention belongs to technical field of motors, it is related to a kind of lubrication system of motor.
Background technology
Motor is a kind of calutron that electric energy conversion or transmission are realized according to the law of electromagnetic induction, and its main function is
Driving torque is produced, as electrical equipment or various mechanical power sources, is also used widely in a vehicle now.In motor
Rotor is driven on rotating shaft high-speed rotation, the casing for the motor that rotating shaft is connected by bearing, needs injection to lubricate in the bearing of motor
Oil or lubricating grease are lubricated, so as to reduce friction and wear, improve the service life and moment of torsion of motor.The bearing of existing motor
It is typically that the grease in bearing can pass through axle by the way of grease is added in bearing by end cap holes drilled through when being lubricated
Hold the hole discharge covered outside.
Chinese patent (notification number：CN202260785U, the day for announcing：2012-05-30) disclose a kind of motor bearing lubrication
System, including end cap, seal ring, inside cap and outer bearing cover；Outer bearing cover is provided with row's fat mouthful；It is socketed with the inside of end cap
Bearing chamber, inside cap is installed on the inner side end of bearing chamber, and the end face outside and the inner side end of bearing chamber of inside cap
Between the first O-ring seal is installed；Bearing chamber end face outside is provided with oil scraper ring, the inner side end of oil scraper ring and bearing chamber
Second O-ring seal is installed between end face outside；Outer bearing cover is installed on the end face outside of oil scraper ring, and outer bearing cover is interior
3rd O-ring seal is installed between side end face and the end face outside of oil scraper ring；Seal ring is socketed on the inside of outer bearing cover, seal ring
Labyrinth seal is provided between end face outside and the inner side end of outer bearing cover；The axis of end cap, the axis of seal ring, inside cap
Axis, the axis of outer bearing cover, the axis of bearing chamber, the axis of the first O-ring seal, the axis of oil scraper ring, the second O-shaped sealing
The axis of circle, the axis of the 3rd O-ring seal are respectively positioned on same straight line.
Motor bearing lubrication system disclosed in above-mentioned patent document prevents oil leak, there is provided more to ensure sealing
Parts, its production mould is more, and the utilization rate of the effective material of motor is low, and the overall production cost of motor is high；And the skill
It is lubricated in art scheme using grease, when motor speed is higher, amount of heat, temperature rise, lubricating grease temperature is produced in bearing
Rise totally unfavorable to bearing lubrication after increasing；If using oil lubrication, lubricating oil can pass through bearing in above-mentioned technical proposal
Motor internal is flowed into inner oil seal, causes to leak and pollutes.
The content of the invention
The present invention is directed to the above mentioned problem of existing technology presence there is provided a kind of lubrication system of motor, and the present invention is wanted
The technical problem of solution is：How to ensure effectively to prevent the leakage of dynamo oil, and reduce motor while lubricant effect
Production cost.
The purpose of the present invention can be realized by following technical proposal：
A kind of lubrication system of motor, motor includes end cap, bearing and the rotating shaft being located in the bearing, the lubrication
Structure includes the oil inlet passage and oil discharge passage being opened in respectively on end cap, it is characterised in that interior oil is arranged with the rotating shaft
Envelope, outer peripheral face and the inner oil seal and end cap of the rotating shaft are collectively forming bearing chamber, and the bearing is located in the bearing chamber；Institute
State and one group of broach groove offered on the inwall of inner oil seal, the oil inlet passage and oil discharge passage are connected with the bearing chamber,
Also there is the excessively oily passage for connecting broach groove and oil discharge passage between the broach groove and the oil discharge passage；The lubrication system
It is additionally included in the outside oil circuit that connection oil inlet passage and oil discharge passage outside end cap form it into circulation loop.
Its operation principle is as follows：In use, being injected by oil inlet passage to bearing chamber after lubricating oil, lubricating oil is to bearing chamber
Interior bearing is lubricated effect, and inner oil seal plays lock oil effect, and most of lubricating oil directly flows without going past inner oil seal
Recycled to oil discharge passage, then by outside oil circuit；Whole oil circulation system can be provided by compressor, blower fan etc.
Power；Because inner oil seal and rotating shaft are relatively rotated, between the two with gap, least a portion of lubricating oil can permeate inner oil seal with turning
Inside gap flow direction motor between axle, by setting broach groove on inner oil seal in the technical program so that flow into inner oil seal
Lubricating oil when by broach groove, got off by stop in layer, and be back to by excessively oily passage in oil discharge passage, most
Also import eventually in oil circulation system.By being improved to inner oil seal in the present invention, set after broach slot structure, can be effective
The leakage of greasing substance is reduced, oil lubrication bearing can be used, it is ensured that lubricant effect；Improve the effective material of motor simultaneously
Sealing parts at the utilization rate of material, motor bearings can greatly reduce, and reduce the manufacturing cost of motor manufacturing.
In the lubrication system of above-mentioned motor, the broach groove includes the groove of at least three ring-types, fluted of institute
Every setting, the depth and width of other grooves are all higher than close to the depth and width of the groove of bearing chamber.Pass through multiple grooves one
The stop backflow of one layer of layer, can be substantially prevented from lubricating oil and flow into motor internal, realizing motor, stall cycles are not oily.
In the lubrication system of above-mentioned motor, between the inwall of the inner oil seal and the outer peripheral face of rotating shaft have gap and
The gap is 0.05mm~0.3mm.Preferably 0.15mm, inner oil seal can be relatively rotated with rotating shaft, set certain gap, to be prevented
Only interfere between the two and fretting wear, while also to prevent a large amount of leakages of lubricating oil, above-mentioned numerical value disclosure satisfy that this
One demand.
In the lubrication system of above-mentioned motor, offered on the outer peripheral face of the rotating shaft one-to-one with the groove
Annular groove, each annular groove and a groove are just to setting.By setting annular groove on the outer peripheral face of rotating shaft, when lubricating oil oozes
When thoroughly to the annular groove, path direction can be changed, and lubricating oil can only be moved to the direction of annular groove or groove, into simultaneously
It is accumulated in the lubricating oil in annular groove to be easily accessible under the centrifugal action of rotating shaft, also into its corresponding groove, and leads to
Oily passage be back in oil discharge passage, it is final to import in oil circulation system, so as to realize that the stop to lubricating oil is reclaimed；
It so reduce further the possibility that lubricating oil is leaked to motor internal.
In the lubrication system of above-mentioned motor, the excessively oily passage is the blind hole opened up on inner oil seal along its axial direction, often
The individual groove is connected by through hole with the excessively oily passage, the openend of the excessively oily passage and the oil discharge passage phase
Connection.Institute is fluted respectively to be connected with excessively oily passage, and the lubricating oil in each groove can individually flow into oily passage, prevent
Only interfere, improve efficiency and effect that lubricating oil stops and reclaimed.
In the lubrication system of above-mentioned motor, the oil-recovery tank of ring-type is further opened with the inwall of the inner oil seal, it is described
Oil-recovery tank is located remotely from one end of the bearing chamber；The oil-recovery tank is connected also by through hole with the excessively oily passage.Infiltration
Oil mass to oil-recovery tank is considerably less, the centrifugal force that oil-recovery tank is produced as last one of oil return bayonet socket, axis of rotation
Under effect, the lubricating oil that can make herein passes sequentially through oil-recovery tank, through hole and entered oily passage and oil discharge passage.
In the lubrication system of above-mentioned motor, the end face of the inner oil seal has annular boss, the annular boss
Diameter is less than the extension on the diameter of inner oil seal, the end cap with tubular, and the extension is overlapped on the annular boss
On.So be capable of fast accurate realizes the positioning and spacing, both assemblings of realization of inner oil seal and end cap, and ensures sealing
Property, prevent oil leak.
In the lubrication system of above-mentioned motor, the extension is close to the inwall of end face and the periphery of the annular boss
Face is mutually reclined, and sealing ring is provided between the end face of the end face of the extension and the inner oil seal.Further carried by sealing ring
The sealing that high inner oil seal is connected with end cap, prevents oil leak.
There is the pore for connecting both in the lubrication system of above-mentioned motor, between the oil inlet passage and bearing chamber,
The pore is located at the side of the bearing, and the junction of the bearing chamber and the oil discharge passage is located at the another of the bearing
Side.Lubricating oil has to pass through and could flowed back after bearing, so ensure that lubricant effect.
In the lubrication system of above-mentioned motor, the oil inlet passage and oil discharge passage set up separately in the both sides of the end cap and
Both are just to setting, and oil passage and all through holes excessively are respectively positioned on the same side of the oil discharge passage.Such arrangement was both protected
Lubricant effect has been demonstrate,proved, the backflow of the lubricating oil of infiltration is also convenient for.
Compared with prior art, the present invention has advantages below：
1st, oil lubrication axle can be used after broach slot structure is set by being improved to inner oil seal in the present invention
Hold, will not also be had adverse effect on even if lubricating oil temperature rise, it is ensured that lubricant effect.
2nd, by setting broach groove on inner oil seal in the present invention so that the lubricating oil for flowing into inner oil seal is passing through broach groove
When, got off by stop in layer, and be back to by excessively oily passage in oil discharge passage, finally also import oil circulation system
In, effectively prevent the phenomenon of oil leak so as to play.
3rd, the sealing parts that lubrication system is improved at the utilization rate of the effective material of motor, motor bearings in the present invention are big
It is big to reduce, reduce the manufacturing cost of motor manufacturing.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of this lubrication system.
Fig. 2 is the dimensional structure diagram of inner oil seal in this lubrication system.
In figure, 1, end cap；11st, oil inlet passage；12nd, oil discharge passage；13rd, extension；14th, pore；2nd, bearing；3rd, rotating shaft；
31st, annular groove；4th, inner oil seal；41st, broach groove；41a, groove；42nd, excessively oily passage；43rd, oil-recovery tank；44th, annular boss；45th, lead to
Hole；5th, bearing chamber；6th, outside oil circuit；7th, sealing ring.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, this motor includes end cap 1, bearing 2 and the rotating shaft 3 being located in bearing 2, this lubrication system
Including the oil inlet passage 11 and oil discharge passage 12 being opened in respectively on end cap 1, it is arranged with rotating shaft 3 outside inner oil seal 4, rotating shaft 3
Side face is collectively forming bearing chamber 5 with inner oil seal 4 and end cap 1, and bearing 2 is located in bearing chamber 5；Opened up on the inwall of inner oil seal 4
Have one group of broach groove 41, oil inlet passage 11 and oil discharge passage 12 are connected with bearing chamber 5, broach groove 41 and oil discharge passage 12 it
Between also there is the excessively oily passage 42 of connection broach groove 41 and oil discharge passage 12；Lubrication system is additionally included in the outer connection oil-feed of end cap 1
Passage 11 and oil discharge passage 12 form it into the outside oil circuit 6 of circulation loop；Further, oil inlet passage 11 and bearing chamber 5 it
Between there is both pore 14 of connection, pore 14 is located at the side of bearing 2, and the junction of bearing chamber 5 and oil discharge passage 12 is located at
The opposite side of bearing 2；Broach groove 41 includes the groove 41a of at least three ring-types, and the fluted 41a of institute is arranged at intervals, close to bearing
The groove 41a of room 5 depth and width be all higher than offering on other groove 41a depth and width, the outer peripheral face of rotating shaft 3 with
The one-to-one annular grooves 31 of groove 41a, each annular groove 31 and a groove 41a are just to setting.In use, logical by oil-feed
Road 11 is injected after lubricating oil to bearing chamber 5, and lubricating oil is lubricated effect to the bearing 2 in bearing chamber 5, and inner oil seal 4 plays lock
Oil effect, most of lubricating oil flows directly into oil discharge passage 12 without going past inner oil seal 4, then is carried out by outside oil circuit 6
Recycle；Whole oil circulation system can provide power by compressor, blower fan etc.；Due to inner oil seal 4 and relative turn of rotating shaft 3
Dynamic, between the two with gap, least a portion of lubricating oil can be permeated inside the gap flow direction motor between inner oil seal 4 and rotating shaft 3,
By setting broach groove 41 on inner oil seal 4 so that the lubricating oil of inner oil seal 4 is flowed into when by broach groove 41, by one layer one
The stop of layer is got off, and is back to by excessively oily passage 42 in oil discharge passage 12, is finally also imported in oil circulation system.Pass through
Inner oil seal 4 is improved, is set after the structure of broach groove 41, can effectively be reduced the leakage of greasing substance, lubrication can be used
Oil-lubricated bearing 2, it is ensured that lubricant effect；The sealing zero at the utilization rate of the effective material of motor, motor bearings 2 is improved simultaneously
Part can greatly reduce, and reduce the manufacturing cost of motor manufacturing.
Have in the present embodiment between the inwall of inner oil seal 4 and the outer peripheral face of rotating shaft 3 gap and the gap be 0.05mm~
0.3mm, preferably 0.15mm, inner oil seal 4 can be relatively rotated with rotating shaft 3, set certain gap, to be prevented mutual between the two
Interference and fretting wear, while also to prevent a large amount of leakages of lubricating oil, above-mentioned numerical value disclosure satisfy that this demand.
As shown in figure 1, excessively oily passage 42 is the blind hole opened up on inner oil seal 4 along its axial direction, each groove 41a is by logical
Hole 45 is connected with excessively oily passage 42, and the openend of excessively oily passage 42 is connected with oil discharge passage 12, and the fluted 41a of institute is respectively
Connected with excessively oily passage 42, the lubricating oil in each groove 41a can individually flow into oily passage 42, prevent from interfering,
Improve efficiency and effect that lubricating oil stops and reclaimed；The oil-recovery tank 43 of ring-type, oil-recovery tank are further opened with the inwall of inner oil seal 4
43 are located remotely from one end of bearing chamber 5；Oil-recovery tank 43 is connected also by through hole 45 with excessively oily passage 42.
As shown in figure 1, the end face of inner oil seal 4 has annular boss 44, the diameter of annular boss 44 is less than the straight of inner oil seal 4
There is the extension 13 of tubular, extension 13 is overlapped on annular boss 44, and extension 13 is in end face on footpath, end cap 1
The outer peripheral face of wall and annular boss 44 is mutually reclined, and sealing ring 7 is provided between the end face of extension 13 and the end face of inner oil seal 4；This
Sample is capable of the positioning for realizing inner oil seal 4 and end cap 1 of fast accurate and spacing, realizes both assemblings, and ensures sealing, prevents
Leak-stopping oil.
As shown in figure 1, oil inlet passage 11 and oil discharge passage 12 set up separately the both sides of end cap 1 and both just to set, it is excessively oily
Passage 42 and all through holes 45 are respectively positioned on the same side of oil discharge passage 12, and such arrangement both ensure that lubricant effect, be also convenient for
The backflow of the lubricating oil of infiltration.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more having used 1, end cap herein；11st, oil inlet passage；12nd, oil discharge passage；13rd, extension；14th, pore；
2nd, bearing；3rd, rotating shaft；31st, annular groove；4th, inner oil seal；41st, broach groove；41a, groove；42nd, excessively oily passage；43rd, oil-recovery tank；44、
Annular boss；45th, through hole；5th, bearing chamber；6th, outside oil circuit；7th, the term such as sealing ring, but be not precluded from using other terms
Possibility.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；It is construed as any
A kind of additional limitation is all disagreed with spirit of the present invention.
Claims (10)
1. a kind of lubrication system of motor, motor includes end cap (1), bearing (2) and the rotating shaft being located in the bearing (2)
(3), the lubrication system includes the oil inlet passage (11) and oil discharge passage (12) being opened in respectively on end cap (1), and its feature exists
In being arranged with inner oil seal (4) on the rotating shaft (3), the outer peripheral face and inner oil seal (4) and end cap (1) of the rotating shaft (3) are common
Bearing chamber (5) is formed, the bearing (2) is located in the bearing chamber (5)；One group is offered on the inwall of the inner oil seal (4)
Broach groove (41), the oil inlet passage (11) and oil discharge passage (12) are connected with the bearing chamber (5), the broach groove
(41) also there is the excessively oily passage (42) for connecting broach groove (41) and oil discharge passage (12) between the oil discharge passage (12)；Institute
State lubrication system and be additionally included in that end cap (1) connects oil inlet passage (11) outside and oil discharge passage (12) forms it into the outer of circulation loop
Portion's oil circuit (6).
2. the lubrication system of motor according to claim 1, it is characterised in that the broach groove (41) includes at least three
The groove (41a) of ring-type, institute fluted (41a) is arranged at intervals, and the depth and width close to the groove (41a) of bearing chamber (5) are equal
More than other grooves (41a) depth and width.
3. the lubrication system of motor according to claim 1 or 2, it is characterised in that the inwall of the inner oil seal (4) is with turning
It is 0.05mm~0.3mm to have gap and the gap between the outer peripheral face of axle (3).
4. the lubrication system of motor according to claim 2, it is characterised in that opened up on the outer peripheral face of the rotating shaft (3)
Have with the one-to-one annular groove (31) of the groove (41a), each annular groove (31) is with a groove (41a) just to setting.
5. the lubrication system of the motor according to claim 2 or 4, it is characterised in that the excessively oily passage (42) is interior oil
The blind hole opened up in envelope (4) along its axial direction, each groove (41a) passes through through hole (45) and described excessively oily passage (42) phase
Connection, the openend of the excessively oily passage (42) is connected with the oil discharge passage (12).
6. the lubrication system of motor according to claim 5, it is characterised in that also opened on the inwall of the inner oil seal (4)
Oil-recovery tank (43) provided with ring-type, the oil-recovery tank (43) is located remotely from one end of the bearing chamber (5)；The oil-recovery tank (43)
It is connected also by through hole (45) with the excessively oily passage (42).
7. the lubrication system of the motor according to claim 1 or 2 or 4, it is characterised in that the end face of the inner oil seal (4)
With annular boss (44), the diameter of the annular boss (44), which is less than on the diameter of inner oil seal (4), the end cap (1), to be had
The extension (13) of tubular, the extension (13) is overlapped on the annular boss (44).
8. the lubrication system of motor according to claim 7, it is characterised in that the extension (13) is interior close to end face
The outer peripheral face of wall and the annular boss (44) mutually reclines, the end face of the extension (13) and the end face of the inner oil seal (4)
Between be provided with sealing ring (7).
9. the lubrication system of the motor according to claim 1 or 2 or 4, it is characterised in that the oil inlet passage (11) and axle
The pore (14) with both connections between room (5) is held, the pore (14) is located at the side of the bearing (2), the bearing
Room (5) and the junction of the oil discharge passage (12) are located at the opposite side of the bearing (2).
10. the lubrication system of motor according to claim 6, it is characterised in that the oil inlet passage (11) and fuel-displaced logical
Road (12) set up separately the both sides of the end cap (1) and both just to setting, the excessively oily passage (42) and all through holes (45) are equal
The same side positioned at the oil discharge passage (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710356996.3A CN107100940A (en) | 2017-05-19 | 2017-05-19 | A kind of lubrication system of motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710356996.3A CN107100940A (en) | 2017-05-19 | 2017-05-19 | A kind of lubrication system of motor |
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| CN107100940A true CN107100940A (en) | 2017-08-29 |
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| CN201710356996.3A Pending CN107100940A (en) | 2017-05-19 | 2017-05-19 | A kind of lubrication system of motor |
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| CN110792588A (en) * | 2019-12-10 | 2020-02-14 | 力源液压系统（贵阳）有限公司 | Transmission lubricating device with pressure lubricating oil |
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| CN114123607A (en) * | 2021-11-29 | 2022-03-01 | 浙江义乌市自来水有限公司 | Insulation system for preventing shaft current of motor |
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| CN109185437A (en) * | 2018-11-22 | 2019-01-11 | 刘毓 | A kind of oil enveloping structure of marine gearbox |
| CN109185437B (en) * | 2018-11-22 | 2022-10-14 | 重庆渝硕重型机械有限公司 | Oil seal structure of marine gearbox |
| CN110375059B (en) * | 2019-07-17 | 2024-04-09 | 成都中车电机有限公司 | Traction motor bearing sealing structure and installation method |
| CN110375059A (en) * | 2019-07-17 | 2019-10-25 | 成都中车电机有限公司 | A kind of traction motor bearing seal structure and installation method |
| CN110792588A (en) * | 2019-12-10 | 2020-02-14 | 力源液压系统（贵阳）有限公司 | Transmission lubricating device with pressure lubricating oil |
| CN111706616A (en) * | 2020-05-19 | 2020-09-25 | 三联泵业股份有限公司 | Clean water pump dry oil lubricating structure and lubricating method thereof |
| CN112145659A (en) * | 2020-09-12 | 2020-12-29 | 中船重工电机科技股份有限公司 | Oil-lubricated sealing structure of semi-direct-drive wind driven generator rotor supporting bearing |
| CN113357369A (en) * | 2021-05-11 | 2021-09-07 | 中国船舶重工集团武汉船舶工业有限公司 | Sealing structure of speed reducer |
| CN113357369B (en) * | 2021-05-11 | 2024-05-28 | 中国船舶重工集团武汉船舶工业有限公司 | Sealing structure of speed reducer |
| CN114123607A (en) * | 2021-11-29 | 2022-03-01 | 浙江义乌市自来水有限公司 | Insulation system for preventing shaft current of motor |
| WO2023097987A1 (en) * | 2021-12-01 | 2023-06-08 | 青岛理工大学 | Three-dimensional comb-like groove array surface for bearing and preparation method therefor |
| CN114857177B (en) * | 2022-04-29 | 2023-10-10 | 大连日牵电机有限公司 | Air pressure balancing structure of rolling bearing for traction motor |
| CN114857177A (en) * | 2022-04-29 | 2022-08-05 | 大连日牵电机有限公司 | Air pressure equalization structure of rolling bearing for traction motor |
| CN116857191A (en) * | 2023-05-10 | 2023-10-10 | 上海汉钟精机股份有限公司 | Vapor screw compressor with non-contact sealing structure |
| CN116857191B (en) * | 2023-05-10 | 2024-03-19 | 上海汉钟精机股份有限公司 | Vapor screw compressor with non-contact sealing structure |
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