CN104033579B - A kind of power transmission shaft dynamic sealing device - Google Patents
A kind of power transmission shaft dynamic sealing device Download PDFInfo
- Publication number
- CN104033579B CN104033579B CN201410127023.9A CN201410127023A CN104033579B CN 104033579 B CN104033579 B CN 104033579B CN 201410127023 A CN201410127023 A CN 201410127023A CN 104033579 B CN104033579 B CN 104033579B
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- CN
- China
- Prior art keywords
- oil
- power transmission
- transmission shaft
- oil return
- spill port
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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
- 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
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a kind of power transmission shaft dynamic sealing device, during use, power transmission shaft driven gear operates, when there being lubricating oil to enter from oil-feed gap, it is partly into the first spill port, then realizing oil return through upper oil return line, during the first spill port oil return scarce capacity, parts of lubricating oil enters in oil circuit, then enter in lower oil return line through the second spill port and realize oil return, achieving shunting oil return, will not freely not causing oil leak due to lubricating oil return, thus avoiding motor mudhole leakage of oil. Secondly, by power transmission shaft dynamic sealing device is reasonably designed, bearing inner race back-up ring is optimized design, by bearing inner race retainer-ring press mounting on power transmission shaft, forming oil-feed gap between the boss of sealing gland and bearing inner race back-up ring so that the height reduction in oil-feed gap, gear engagement anallobar is avoided in oil-feed gap, gear lubricant can being reduced to greatest extent and scurry into motor-driven end labyrinth by oil-feed gap, avoiding motor mudhole leakage of oil thus avoiding.
Description
Technical field
The present invention relates to power transmission shaft dynamic sealing technology field, particularly relate to a kind of power transmission shaft dynamic sealing device.
Background technology
It is varied that the difference that engine truck driving device lubrication system is arranged causes that engine truck driving device motor driving end seals structure, engine truck driving device for motor-driven end bearing and driving gear independent lubricating, it is simpler that its traditional motor-driven end seals structure, and there is motor mudhole oil leakage phenomenon in actual operation, along with the novel locomotive motor speed of subsequent design further improves, adopt the motor mudhole oil leakage phenomenon that traditional motor-driven end sealing structure causes serious all the more.
Therefore, how to provide a kind of power transmission shaft dynamic sealing device, to avoid motor mudhole leakage of oil, be current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of power transmission shaft dynamic sealing device, to avoid motor mudhole leakage of oil.
In order to achieve the above object, the present invention provides following technical scheme:
A kind of power transmission shaft dynamic sealing device, including bearing inner race back-up ring, sealing gland and oil return pipe, wherein, described bearing inner race retainer-ring press mounting is on power transmission shaft, described bearing inner race back-up ring includes boss, the outside of described boss flushes with the outside of described power transmission shaft, described sealing gland forms oil-feed gap with described boss, gear engagement anallobar is avoided in described oil-feed gap, the left side of described sealing gland and described bearing inner race back-up ring forms oil circuit, described oil-feed gap and described oil communication, described sealing gland is respectively arranged with the first spill port and the second spill port, described oil return pipe is divided into upper oil return line and lower oil return line by dividing plate, described first spill port is by described oil-feed gap and oil communication described last time, described second spill port is by described oil circuit and described oil communication next time.
Preferably, above-mentioned first spill port includes two sub-drainback passages of ladder U-type groove, and described sealing gland and described bearing inner race back-up ring formation labyrinth and described labyrinth connects with described second spill port.
Preferably, the bottom of above-mentioned sealing gland contacts with gear-box eckband static seal, and the bottom of described oil return pipe has bending part, and described bending part dodges out the junction of described sealing gland and described gear-box eckband.
Preferably, above-mentioned oil return pipe and described sealing gland are by being welded to connect.
Power transmission shaft dynamic sealing device provided by the invention, including bearing inner race back-up ring, sealing gland and oil return pipe, wherein, described bearing inner race retainer-ring press mounting is on power transmission shaft, described bearing inner race back-up ring includes boss, the outside of described boss flushes with the outside of described power transmission shaft, described sealing gland forms oil-feed gap with described boss, gear engagement anallobar is avoided in described oil-feed gap, the left side of described sealing gland and described bearing inner race back-up ring forms oil circuit, described oil-feed gap and described oil communication, described sealing gland is respectively arranged with the first spill port and the second spill port, described oil return pipe is divided into upper oil return line and lower oil return line by dividing plate, described first spill port is by described oil-feed gap and oil communication described last time, described second spill port is by described oil circuit and described oil communication next time.
First, power transmission shaft driven gear operates, when there being lubricating oil to enter from oil-feed gap, it is partly in the first spill port, then realizes oil return through upper oil return line, during the first spill port oil return scarce capacity, parts of lubricating oil enters in oil circuit, is then passed through the second spill port and enters in lower oil return line and realize oil return, it is achieved thereby that shunting oil return, oil leak will not freely be caused, thus avoiding motor mudhole leakage of oil due to lubricating oil return.
Secondly, by power transmission shaft dynamic sealing device is reasonably designed, bearing inner race back-up ring is optimized design, by bearing inner race retainer-ring press mounting on power transmission shaft, forming oil-feed gap between the boss of sealing gland and bearing inner race back-up ring so that the height reduction in oil-feed gap, gear engagement anallobar is avoided in oil-feed gap, gear lubricant can being reduced to greatest extent and scurry into motor-driven end labyrinth by oil-feed gap, avoiding motor mudhole leakage of oil thus avoiding.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The sectional structure schematic diagram of the power transmission shaft dynamic sealing device that Fig. 1 provides for the embodiment of the present invention.
In figure 1 above:
Bearing inner race back-up ring 1, boss 11, power transmission shaft 2, oil-feed gap 3, oil circuit 4, oil return pipe 5, upper oil return line 51, lower oil return line 52, bending part 53, gear-box eckband 6, sealing gland the 7, first spill port the 71, second spill port 72, gear engagement nodel line 8, motor mudhole 9.
Detailed description of the invention
Embodiments provide a kind of power transmission shaft dynamic sealing device, to avoid motor mudhole leakage of oil.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to the sectional structure schematic diagram of the power transmission shaft dynamic sealing device that Fig. 1, Fig. 1 provide for the embodiment of the present invention.
The power transmission shaft dynamic sealing device that the embodiment of the present invention provides, including bearing inner race back-up ring 1, sealing gland 7 and oil return pipe 5, wherein, bearing inner race back-up ring 1 is fitted on power transmission shaft 2, bearing inner race back-up ring 1 includes boss 11, the outside of boss 11 flushes with the outside of power transmission shaft 2, sealing gland 7 and boss 11 form oil-feed gap 3, gear engagement anallobar is avoided in oil-feed gap 3, region such as Fig. 1 middle gear engagement nodel line more than 8 is engagement anallobar, the left side of sealing gland 7 and bearing inner race back-up ring 1 forms oil circuit 4, oil-feed gap 3 connects with oil circuit 4, sealing gland 7 is respectively arranged with the first spill port 71 and the second spill port 72, oil return pipe 5 is divided into upper oil return line 51 and lower oil return line 52 by dividing plate, oil-feed gap 3 is connected by the first spill port 71 with upper oil return line 51, oil circuit 4 is connected by the second spill port 72 with lower oil return line 52.
First, power transmission shaft 2 driven gear operates, when there being lubricating oil to enter from oil-feed gap 3, it is partly in the first spill port 71, then realizes oil return through upper oil return line 51, during the first spill port 71 oil return scarce capacity, parts of lubricating oil enters in oil circuit 4, is then passed through the second spill port 72 and enters in lower oil return line 52 and realize oil return, it is achieved thereby that shunting oil return, oil leak will not freely be caused, thus avoiding motor mudhole 9 leakage of oil due to lubricating oil return.
Secondly, by power transmission shaft dynamic sealing device is reasonably designed, bearing inner race back-up ring 1 is optimized design, bearing inner race back-up ring 1 is fitted on power transmission shaft 2, forming oil-feed gap 3 between the boss of sealing gland 7 and bearing inner race back-up ring 1 so that the height reduction in oil-feed gap 3, gear engagement anallobar is avoided in oil-feed gap 3, gear lubricant can being reduced to greatest extent and scurry into motor-driven end labyrinth by oil-feed gap 3, avoiding motor mudhole leakage of oil thus avoiding.
Wherein, first spill port 71 includes two sub-drainback passages of ladder U-type groove, can stop that more lubricating oil enters in oil circuit 4, sealing gland 7 forms labyrinth and labyrinth and connects with the second spill port 72 with bearing inner race back-up ring 1, can guarantee that lubricating oil all refluxes, thus avoiding motor mudhole 9 leakage of oil.
Wherein, the bottom of sealing gland 7 contacts with gear-box eckband 6 static seal, and the bottom of oil return pipe 5 has bending part 53, and bending part 53 dodges out the junction of sealing gland 7 and gear-box eckband 6. Sealing gland 7 and the gluing blocking in gear-box eckband 6 installation process are avoided in oil return pipe 5 bending design, have feature easy to assembly.
Concrete, oil return pipe 5 and sealing gland 7 can pass through to be welded to connect, the good airproof performance of welding, and relatively firm, and service life is longer.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (4)
1. a power transmission shaft dynamic sealing device, it is characterised in that include bearing inner race back-up ring, sealing gland and oil return pipe,
Wherein, described bearing inner race retainer-ring press mounting is on power transmission shaft, described bearing inner race back-up ring includes boss, the outside of described boss flushes with the outside of described power transmission shaft, described sealing gland forms oil-feed gap with described boss, and gear engagement anallobar is avoided in described oil-feed gap, and the left side of described sealing gland and described bearing inner race back-up ring forms oil circuit, described oil-feed gap and described oil communication
Being respectively arranged with the first spill port and the second spill port on described sealing gland, described oil return pipe is divided into upper oil return line and lower oil return line by dividing plate,
Described first spill port is by described oil-feed gap and oil communication described last time, and described second spill port is by described oil circuit and described oil communication next time.
2. power transmission shaft dynamic sealing device according to claim 1, it is characterized in that, described first spill port includes two sub-drainback passages of ladder U-type groove, and described sealing gland and described bearing inner race back-up ring formation labyrinth and described labyrinth connects with described second spill port.
3. power transmission shaft dynamic sealing device according to claim 1, it is characterized in that, the bottom of described sealing gland contacts with gear-box eckband static seal, and the bottom of described oil return pipe has bending part, and described bending part dodges out the junction of described sealing gland and described gear-box eckband.
4. power transmission shaft dynamic sealing device according to claim 1, it is characterised in that described oil return pipe and described sealing gland are by being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127023.9A CN104033579B (en) | 2014-03-31 | 2014-03-31 | A kind of power transmission shaft dynamic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127023.9A CN104033579B (en) | 2014-03-31 | 2014-03-31 | A kind of power transmission shaft dynamic sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104033579A CN104033579A (en) | 2014-09-10 |
| CN104033579B true CN104033579B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410127023.9A Active CN104033579B (en) | 2014-03-31 | 2014-03-31 | A kind of power transmission shaft dynamic sealing device |
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| CN (1) | CN104033579B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673817B (en) * | 2016-03-17 | 2018-07-13 | 重庆望江工业有限公司 | A kind of wind turbine gearbox output shaft seal structure |
| JP6610780B2 (en) * | 2016-05-27 | 2019-11-27 | 日本電産株式会社 | Actuator |
| CN109468765B (en) * | 2017-09-07 | 2024-07-09 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN113339408B (en) * | 2021-07-08 | 2022-05-31 | 哈电风能有限公司 | Generator single bearing lubrication sealing structure and generator set |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02173458A (en) * | 1988-12-23 | 1990-07-04 | Aisin Aw Co Ltd | Shaft structure in automatic transmission |
| US6338285B2 (en) * | 1996-06-17 | 2002-01-15 | Nsk Ltd. | Feed screw device |
| CN202215736U (en) * | 2011-08-30 | 2012-05-09 | 常州市瑞泰工程机械有限公司 | Sealing structure for traveling gearbox of railway vehicle |
| CN102691783A (en) * | 2012-06-06 | 2012-09-26 | 浙江通力重型齿轮股份有限公司 | Planet bearing lubricating device in gear box |
| CN202833989U (en) * | 2012-07-27 | 2013-03-27 | 江苏泰隆减速机股份有限公司 | Sealing device for transmission shaft |
| CN203892532U (en) * | 2014-03-31 | 2014-10-22 | 南车株洲电力机车有限公司 | Movable sealing device for transmission shaft |
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2014
- 2014-03-31 CN CN201410127023.9A patent/CN104033579B/en active Active
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| CN104033579A (en) | 2014-09-10 |
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