CN110375059A - A kind of traction motor bearing seal structure and installation method - Google Patents
A kind of traction motor bearing seal structure and installation method Download PDFInfo
- Publication number
- CN110375059A CN110375059A CN201910644878.1A CN201910644878A CN110375059A CN 110375059 A CN110375059 A CN 110375059A CN 201910644878 A CN201910644878 A CN 201910644878A CN 110375059 A CN110375059 A CN 110375059A
- Authority
- CN
- China
- Prior art keywords
- spacer
- traction motor
- drainback passage
- sealing structure
- shaft
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 125000006850 spacer group Chemical group 0.000 claims abstract description 50
- 239000003921 oil Substances 0.000 abstract description 67
- 239000010687 lubricating oil Substances 0.000 abstract description 20
- 230000005484 gravity Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of traction motor bearing seal structure and installation method, the traction motor sealing structure includes internal sealed ring (2), inner oil seal (3), end cap (5), spacer (6) and sealing ring (9), internal sealed ring (2) respectively with shaft (1), sealing ring (9) forms sealing structure, inner oil seal (3) respectively with shaft (1), sealing ring (9) forms sealing structure, the first drainback passage (61) communicated with gear-box (7) inner cavity is formed on the spacer (6), and clearance fit structure is formed between spacer (6) and inner oil seal (3).The present invention can make the lubricating oil for entering spacer and inner oil seal gap pass through the first drainback passage under gravity back in the inner cavity of gear-box, it effectively prevents the lubricating oil in gear-box from altering internal sealed ring and entered inside traction motor, there is outstanding advantages of sealing reliability that is easy for installation, improving traction motor driving end.
Description
Technical field
The present invention relates to traction motor Seal Design fields, more particularly, to a kind of traction motor bearing seal structure
And installation method.
Background technique
The transmission end bearing and transmission gear of traction motor are all made of the lubricating oil inside gear-box and are lubricated, and are leading
During drawing electric motor operation, if lubricating oil enters motor interior, the reliable operation of traction motor will be directly influenced
Property.
The lubricating oil inside gear-box enters motor interior in order to prevent, and it is close presently mainly to carry out oil using sealing ring
Envelope.But in the traction motor course of work, this design of Sealing Structure is easy that sealing is caused to be lost because of ring wear
Effect.In addition, the installation of sealing ring, fixation are also comparatively laborious, need matched with sealing ring location structure to design, not only increase into
This, and sealing reliability is not also high.
Summary of the invention
The technical problem to be solved by the present invention is in view of the problems of the existing technology, providing a kind of traction motor axis
Sealing structure and installation method are held, the sealing reliability of traction motor driving end is improved.
The technical problem to be solved in the present invention is realized using following technical scheme: a kind of traction motor sealing structure,
Including internal sealed ring, inner oil seal, end cap, spacer and sealing ring, the internal sealed ring forms sealing knot with shaft, sealing ring respectively
Structure, the inner oil seal form sealing structure with shaft, sealing ring respectively, and the end cap is solid with sealing ring, gear-box respectively
It is fixed to connect, the first drainback passage is formed on the spacer, first drainback passage is communicated with the inner cavity of gear-box, described
Spacer be fixedly connected with end cap and between spacer and inner oil seal formed clearance fit structure.
Preferably, the first oil return hole is formed on the spacer, and the second drainback passage is formed on the end cap, it is described
Second drainback passage is communicated with the inner cavity of gear-box, and first oil return hole is communicated with the second drainback passage.
Preferably, confluence oil duct is formed on the end cap, the confluence oil duct is connected to the second drainback passage；It is described
The first oil return hole be arranged several, and several the first oil return holes are connected to confluence oil duct.
Preferably, the second oil return hole is formed on the end cap, second oil return hole is connected to the second drainback passage.
Preferably, third oil return hole is formed on the sealing ring, the third oil return hole and the second drainback passage connect
It is logical.
Preferably, second drainback passage is arranged relative to axes of rotation skew.
Preferably, lug is formed on the spacer, location hole is opened up on lug；Lead between the spacer and end cap
Connection bolt-through location hole is crossed to form a fixed connection structure.
Preferably, the lug is arranged 2, and 2 lugs are respectively positioned on the same side of the installation vertical center line of spacer.
Preferably, the first drainback passage on the spacer is arranged relative to axes of rotation skew.
A kind of installation method of traction motor sealing structure, includes the following steps:
Internal sealed ring is fixedly installed in shaft by S1, and sealing structure is formed between internal sealed ring and shaft；
Sealing ring is fixedly connected with end cap, and forms sealing structure between sealing ring and internal sealed ring by S2；
Inner oil seal is fixedly installed in shaft by S3, and inner oil seal forms sealing structure with shaft, sealing ring respectively；
Spacer is fixedly installed on end cap by S4, and between spacer and inner oil seal formed clearance fit structure, it is described every
It puts on to form the first drainback passage, and communicates the first drainback passage with the inner cavity of gear-box.
Compared with prior art, the beneficial effects of the present invention are: being sealed since internal sealed ring is formed with shaft, sealing ring respectively
Structure, inner oil seal form sealing structure with shaft, sealing ring respectively, and the first drainback passage on spacer and gear-box is interior
Chamber communicates, and therefore, after the lubricating oil in gear box cavity enters the gap between spacer and inner oil seal, lubricating oil will be in gravity
Under the action of by the first drainback passage back to gear-box inner cavity in, effectively to prevent the lubricating oil in gear box cavity from altering
It crosses internal sealed ring and enters inside traction motor, improve the sealing reliability of traction motor driving end.
Detailed description of the invention
Fig. 1 is a kind of organigram of traction motor sealing structure of the present invention.
Fig. 2 is the partial enlarged view in Fig. 1 at A.
Fig. 3 is the main view of the spacer in Fig. 1.
Fig. 4 is the cross-sectional view of the spacer in Fig. 1.
Component token name claims in figure: 1- shaft, 2- internal sealed ring, 3- inner oil seal, 4- connection bolt, 5- end cap, 6- spacer, 7-
Gear-box, 8- transmission gear, 9- sealing ring, 10- bearing, the second drainback passage of 51-, 52- confluence oil duct, the second oil return hole of 53-,
The first drainback passage of 61-, the first oil return hole of 62-, 63- lug, 64- location hole, 91- third oil return hole.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Traction motor sealing structure as shown in Figure 1 and Figure 2 mainly includes shaft 1, internal sealed ring 2, inner oil seal 3, end cap
5, one end of spacer 6, gear-box 7 and sealing ring 9, the shaft 1 is connect with bearing 10, is fixedly connected with driving cog in shaft 1
Wheel 8, the transmission gear 8 is located in the hollow cavity of gear-box 7.To simplify assembly technology, raising bonding strength is described
Transmission gear 8, which can be, to be directly process in shaft 1, to make to form integrated molding between transmission gear 8 and shaft 1
Structure.The internal sealed ring 2 and shaft 1 is fixedly attached and forms sealing structure between internal sealed ring 2 and shaft 1.The interior oil
Envelope 3 and shaft 1 are fixedly attached and form sealing structure between inner oil seal 3 and shaft 1.The end cap 5 respectively with spacer 6, close
Seal ring 9, gear-box 7 are fixedly connected；In general, being formed a fixed connection knot between the spacer 6 and end cap 5 with interference fit type
Structure forms dismountable fixed connection structure, the sealing ring 9 by connecting bolt 4 between the end cap 5 and sealing ring 9
Opposite end respectively with internal sealed ring 2, inner oil seal 3 formed sealing structure.
Clearance fit structure is formed between the spacer 6 and inner oil seal 3, and the first drainback passage 61 is formed on spacer 6,
First drainback passage 61 is communicated with the inner cavity of gear-box 7.Therefore, the lubricating oil in 7 inner cavity of gear-box is entering
Behind gap between spacer 6 and inner oil seal 3, lubricating oil will return to gear along the first drainback passage 61 under gravity
In the inner cavity of case 7, to reach sealing effect of traction motor driving end, the profit in 7 inner cavity of gear-box is effectively prevented
Lubricating oil enters inside traction motor.
In order to further increase the sealing reliability of above-mentioned traction motor driving end, the internal sealed ring 2, sealing ring 9
On can be respectively formed several double wedges and groove, be intermeshed between the internal sealed ring 2 and sealing ring 9 by double wedge and groove
And labyrinth seal structure is formed, similarly, several double wedges and recessed can also be respectively formed on the inner oil seal 3, sealing ring 9
Slot forms labyrinth seal structure by double wedge and groove intermeshing between the inner oil seal 3 and sealing ring 9.It is described
End cap 5 on can be respectively formed the second drainback passage 51, confluence oil duct 52, the second oil return hole 53, second oil return is logical
Road 51 is communicated with the inner cavity of gear-box 7, and the confluence oil duct 52, the second oil return hole 53 connect with the second drainback passage 51 respectively
It is logical.The first oil return hole 62 can be formed on spacer 6, in general, several, and several articles are arranged in first oil return hole 62
One oil return hole 62 is connected to confluence oil duct 52, as shown in Figure 2, Figure 4 shows.Third oil return hole 91, institute can be formed on sealing ring 9
The first oil return hole 62, the third oil return hole 91 stated are connected with the second drainback passage 51 respectively.
After above-mentioned structure design, lubricating oil in 7 inner cavity of gear-box enter spacer 6 and inner oil seal 3 it
Between gap after, under gravity, a part therein will be along the first drainback passage 61 back to gear-box 7 for lubricating oil
In inner cavity, and another part will enter the second drainback passage 51 after followed by the first oil return hole 62, confluence oil duct 52, also
A part will enter the second drainback passage 51 after flowing separately through the second oil return hole 53, third oil return hole 91, further along second time
Oily channel 51 returns in the inner cavity of gear-box 7, to improve the sealing reliability of traction motor driving end.
It, can be on spacer 6 to guarantee that the lubricating oil for flowing through the first oil return hole 62 can be flowed in confluence oil duct 52
Lug 63 is formed, location hole 64 is opened up on lug 63, as shown in Figure 3, Figure 4；It can lead between the spacer 6 and end cap 5
Connection bolt 4 is crossed to form a fixed connection structure through location hole 64.In general, 2, and 2 lugs 63 are arranged in the lug 63
It is respectively positioned on the same side of the installation vertical center line of spacer 6；The lug 63 is preferably positioned at the transmission gear in gear-box 7
Secondary engagement side, and the other side of the installation vertical center line of spacer 6 does not set lug 63 and location hole 64 then.By the way that lug is arranged
63 pairs of spacers 6 carry out assembly positioning, it is ensured that the positioning reliability between spacer 6 and end cap 5, and then can ensure that and flow through first
The lubricating oil of oil return hole 62 can be drained into accurately in confluence oil duct 52.
When lubricating oil return under gravity the speed in 7 inner cavity of gear-box it is faster when, traction motor driving end
Sealing reliability it is higher.In order to improve the back-flow velocity in lubricating oil return 7 inner cavity of gear-box, the first oil return can be led to
Road 61 is obliquely installed relative to shaft 1, similarly, is also obliquely installed the second drainback passage 51 relative to shaft 1.The confluence
The cross sectional shape of oil duct 52 preferably uses T-shaped structure, and relatively small end is connected to the second drainback passage 51, second oil return
The cross sectional shape in hole 53 is it is also preferred that using T-shaped structure, and relatively small end is connected to the second drainback passage 51, as shown in Figure 2.
Above-mentioned traction motor sealing structure can be installed using vertical dress mode, and specific installation steps are such as
Under:
Internal sealed ring 2 is fixedly installed in shaft 1 by step 1, and forms sealing structure between internal sealed ring 2 and shaft 1.It is logical
It often, is that fixing seal structure is formed using interference fit type between the internal sealed ring 2 and shaft 1.
Sealing ring 9 is fixedly connected with end cap 5, and forms sealing structure between sealing ring 9 and internal sealed ring 2 by step 2.
Inner oil seal 3 is fixedly installed in shaft 1 by step 3, and inner oil seal 3 forms with shaft 1, sealing ring 9 seal respectively
Structure.In general, between the inner oil seal 3 and shaft 1 fixing seal structure can be formed using interference fit type.
Spacer 6 is fixedly installed on end cap 5 by step 4, and clearance fit structure is formed between spacer 6 and inner oil seal 3,
The first drainback passage 61 is formed on the spacer 6, and communicates the first drainback passage 61 with the inner cavity of gear-box 7.In general, institute
Can be formed a fixed connection structure between the spacer 6 stated and end cap 5 using interference fit type.
After above-mentioned traction motor sealing structure is installed, the bearing 10 of traction motor driving end and transmission
Gear 8 is all made of the oil lubrication in 7 inner cavity of gear-box, and the lubricating oil in 7 inner cavity of gear-box is entering spacer 6 and interior oil
Behind gap between envelope 3, lubricating oil will pass through the first drainback passage 61 under gravity, the second drainback passage 51 returns to
In the inner cavity of gear-box 7, enters and lead so as to effectively prevent the lubricating oil in 7 inner cavity of gear-box from altering internal sealed ring 2
Draw motor interior, improve the sealing reliability of traction motor driving end, and then the work for improving traction motor can
By property.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of traction motor sealing structure, including internal sealed ring (2), inner oil seal (3), end cap (5) and sealing ring (9), described
Internal sealed ring (2) respectively with shaft (1), sealing ring (9) formed sealing structure, the inner oil seal (3) respectively with shaft (1),
Sealing ring (9) forms sealing structure, and the end cap (5) is fixedly connected with sealing ring (9), gear-box (7) respectively, and feature exists
In: further include spacer (6), formed on the spacer (6) the first drainback passage (61), first drainback passage (61) with
The inner cavity of gear-box (7) communicates, and the spacer (6) is fixedly connected with end cap (5) and shape between spacer (6) and inner oil seal (3)
At clearance fit structure.
2. a kind of traction motor sealing structure according to claim 1, it is characterised in that: shape on the spacer (6)
At the first oil return hole (62), formed on the end cap (5) the second drainback passage (51), second drainback passage (51) with
The inner cavity of gear-box (7) communicates, and first oil return hole (62) is communicated with the second drainback passage (51).
3. a kind of traction motor sealing structure according to claim 2, it is characterised in that: shape on the end cap (5)
At confluence oil duct (52), the confluence oil duct (52) is connected to the second drainback passage (51)；First oil return hole (62)
It is arranged several, and several the first oil return holes (62) are connected to confluence oil duct (52).
4. a kind of traction motor sealing structure according to claim 2, it is characterised in that: shape on the end cap (5)
At the second oil return hole (53), second oil return hole (53) is connected to the second drainback passage (51).
5. a kind of traction motor sealing structure according to claim 2, it is characterised in that: on the sealing ring (9)
It is formed third oil return hole (91), the third oil return hole (91) is connected to the second drainback passage (51).
6. according to a kind of described in any item traction motor sealing structures of claim 2-5, it is characterised in that: described second
Drainback passage (51) is obliquely installed relative to shaft (1).
7. a kind of traction motor sealing structure according to claim 1-5, it is characterised in that: the spacer
(6) lug (63) are formed on, and location hole (64) are opened up on lug (63)；Pass through company between the spacer (6) and end cap (5)
Connecting bolt (4) forms a fixed connection structure through location hole (64).
8. a kind of traction motor sealing structure according to claim 7, it is characterised in that: lug (63) setting
2, and 2 lugs (63) are respectively positioned on the same side of the installation vertical center line of spacer (6).
9. a kind of traction motor sealing structure according to claim 1-5, it is characterised in that: the spacer
(6) the first drainback passage (61) on is obliquely installed relative to shaft (1).
10. a kind of installation method of traction motor sealing structure, characterized by the following steps:
Internal sealed ring (2) is fixedly installed on shaft (1) by S1, and forms sealing structure between internal sealed ring (2) and shaft (1)；
Sealing ring (9) is fixedly connected with end cap (5), and forms sealing structure between sealing ring (9) and internal sealed ring (2) by S2；
Inner oil seal (3) is fixedly installed on shaft (1) by S3, and inner oil seal (3) is formed with shaft (1), sealing ring (9) respectively
Sealing structure；
Spacer (6) is fixedly installed on end cap (5) by S4, and clearance fit structure is formed between spacer (6) and inner oil seal (3),
The first drainback passage (61) are formed on the spacer (6), and make the inner cavity phase of the first drainback passage (61) with gear-box (7)
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910644878.1A CN110375059B (en) | 2019-07-17 | 2019-07-17 | Traction motor bearing sealing structure and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910644878.1A CN110375059B (en) | 2019-07-17 | 2019-07-17 | Traction motor bearing sealing structure and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375059A true CN110375059A (en) | 2019-10-25 |
| CN110375059B CN110375059B (en) | 2024-04-09 |
Family
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| CN201910644878.1A Active CN110375059B (en) | 2019-07-17 | 2019-07-17 | Traction motor bearing sealing structure and installation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518736A (en) * | 2019-08-18 | 2019-11-29 | 中车永济电机有限公司 | A kind of traction electric machine oil lubrication sealing structure |
| CN113357271A (en) * | 2021-06-25 | 2021-09-07 | 珠海格力电器股份有限公司 | Electric spindle structure and processing equipment |
| WO2023019661A1 (en) * | 2021-08-20 | 2023-02-23 | 西安中车永电捷力风能有限公司 | Parallel oil path structure for single-ended dual bearings and application thereof |
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