CN104033579A - Transmission shaft sealing device - Google Patents
Transmission shaft sealing device Download PDFInfo
- Publication number
- CN104033579A CN104033579A CN201410127023.9A CN201410127023A CN104033579A CN 104033579 A CN104033579 A CN 104033579A CN 201410127023 A CN201410127023 A CN 201410127023A CN 104033579 A CN104033579 A CN 104033579A
- Authority
- CN
- China
- Prior art keywords
- oil
- transmission shaft
- sealing gland
- inner race
- bearing inner
- 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
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
Landscapes
- 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 transmission shaft sealing device. In use, a gear is driven by a transmission shaft to run; when a lubricating oil enters from an oil inlet gap, one part of the lubricating oil enters a first oil return hole and then oil return is returned via an upper oil return path; when the oil return capacity of the first oil return hole is insufficient, one part of lubricating oil goes into the oil path and then goes into a lower oil return path via a second oil return hole to be returned, and therefore, dividing oil return is realized, the leakage of the lubricating oil due to unsmooth lubricating oil return is avoided, and moreover, oil leakage of a blowdown hole of a motor is prevented. In the second place, the transmission shaft sealing device is reasonably designed and the design of a bearing inner race retainer ring is optimized, so that the bearing inner race retainer ring is held down on the transmission shaft, the oil inlet gap is formed between a sealing gland and a lug boss of the bearing inner race retainer ring, the height of the oil inlet gap is reduced and the oil inlet gap is kept away from a gear engagement pressurizing region, and as a result, the gear lubricating oil going into the driving-end labyrinth of the motor via the oil inlet gap is reduced to the utmost extent so that the oil leakage of the blowdown hole of the motor is prevented.
Description
Technical field
The present invention relates to transmission shaft dynamic sealing technology field, relate in particular to a kind of transmission shaft dynamic seal apparatus.
Background technique
The difference that engine truck drive unit lubricating structure is arranged causes engine truck driving device motor driving end sealing configuration varied, engine truck drive unit for motor-driven step bearing and driving gear independent lubricating, its traditional motor-driven end sealing configuration is simpler, and at the motor pollutant exhaust hole oil leakage phenomenon that exists in service of reality, along with the novel locomotive motor speed of subsequent design further improves, the motor pollutant exhaust hole oil leakage phenomenon that adopts traditional motor-driven end sealing configuration to cause is serious all the more.
Therefore, how providing a kind of transmission shaft dynamic seal apparatus, to avoid the leakage of oil of motor pollutant exhaust hole, is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of transmission shaft dynamic seal apparatus, to avoid the leakage of oil of motor pollutant exhaust hole.
In order to achieve the above object, the invention provides following technological scheme:
A kind of transmission shaft dynamic seal apparatus, comprise bearing inner race back-up ring, sealing gland and return tube, wherein, described bearing inner race retainer-ring press mounting is on transmission shaft, described bearing inner race back-up ring comprises boss, the outside of described boss flushes with the outside of described transmission shaft, described sealing gland and described boss form oil-feed gap, 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 is communicated with described oil circuit, on described sealing gland, be respectively arranged with the first spill port and the second spill port, described return tube is divided into upper oil circuit and lower oil circuit by dividing plate, described the first spill port is communicated with described oil-feed gap with described upper oil circuit, described the second spill port is communicated with described oil circuit with described lower oil circuit.
Preferably, above-mentioned the first spill port comprises two U-shaped trough drainback passages of ladder, and described sealing gland and described bearing inner race back-up ring form labyrinth and described labyrinth is communicated with described the second spill port.
Preferably, the bottom of above-mentioned sealing gland contacts with gear-box eckband static seal, and the bottom of described return tube has bending part, and described bending part is dodged out the joint of described sealing gland and described gear-box eckband.
Preferably, above-mentioned return tube and described sealing gland are by being welded to connect.
Transmission shaft dynamic seal apparatus provided by the invention, comprise bearing inner race back-up ring, sealing gland and return tube, wherein, described bearing inner race retainer-ring press mounting is on transmission shaft, described bearing inner race back-up ring comprises boss, the outside of described boss flushes with the outside of described transmission shaft, described sealing gland and described boss form oil-feed gap, 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 is communicated with described oil circuit, on described sealing gland, be respectively arranged with the first spill port and the second spill port, described return tube is divided into upper oil circuit and lower oil circuit by dividing plate, described the first spill port is communicated with described oil-feed gap with described upper oil circuit, described the second spill port is communicated with described oil circuit with described lower oil circuit.
First, the running of transmission shaft driven gear, when having lubricant oil to enter from oil-feed gap, a part enters into the first spill port, then through upper oil circuit, realizes oil return, during the first spill port oil return scarce capacity, parts of lubricating oil enters into oil circuit, then through the second spill port, enters into lower oil circuit and realizes oil return, thereby realized shunting oil return, can be because lubricating oil return does not freely cause oil leak, thus the leakage of oil of motor pollutant exhaust hole avoided.
Secondly, by transmission shaft dynamic seal apparatus is reasonably designed, bearing inner race back-up ring is optimized to design, by bearing inner race retainer-ring press mounting on transmission shaft, between sealing gland and the boss of bearing inner race back-up ring, form oil-feed gap, the height in oil-feed gap is reduced, gear engagement anallobar is avoided in oil-feed gap, can reduce to greatest extent gear lubricant and scurry into motor-driven end labyrinth by oil-feed gap, thereby avoid the leakage of oil of motor pollutant exhaust hole.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The sectional structure schematic diagram of the transmission shaft dynamic seal apparatus that Fig. 1 provides for the embodiment of the present invention.
In upper Fig. 1:
Bearing inner race back-up ring 1, boss 11, transmission shaft 2, oil-feed gap 3, oil circuit 4, return tube 5, upper oil circuit 51, lower oil circuit 52, bending part 53, gear-box eckband 6, sealing gland 7, the first spill port 71, the second spill port 72, gear engagement nodel line 8, motor pollutant exhaust hole 9.
Embodiment
The embodiment of the present invention provides a kind of transmission shaft dynamic seal apparatus, to avoid the leakage of oil of motor pollutant exhaust hole.
For making object, technological scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the sectional structure schematic diagram of the transmission shaft dynamic seal apparatus that Fig. 1 provides for the embodiment of the present invention.
The transmission shaft dynamic seal apparatus that the embodiment of the present invention provides, comprise bearing inner race back-up ring 1, sealing gland 7 and return tube 5, wherein, bearing inner race back-up ring 1 is fitted on transmission shaft 2, bearing inner race back-up ring 1 comprises boss 11, the outside of boss 11 flushes with the outside of transmission shaft 2, sealing gland 7 forms oil-feed gap 3 with boss 11, gear engagement anallobar is avoided in oil-feed gap 3, as more than 8 region of Fig. 1 middle gear engagement nodel line is engagement anallobar, sealing gland 7 forms oil circuit 4 with the left side of bearing inner race back-up ring 1, oil-feed gap 3 is communicated with oil circuit 4, on sealing gland 7, be respectively arranged with the first spill port 71 and the second spill port 72, return tube 5 is divided into upper oil circuit 51 and lower oil circuit 52 by dividing plate, the first spill port 71 is communicated with oil-feed gap 3 with upper oil circuit 51, the second spill port 72 is communicated with oil circuit 4 with lower oil circuit 52.
First, transmission shaft 2 driven gear runnings, when having lubricant oil to enter from oil-feed gap 3, a part enters into the first spill port 71, then through upper oil circuit 51, realizes oil return, during the first spill port 71 oil return scarce capacity, parts of lubricating oil enters into oil circuit 4, then through the second spill port 72, enters into lower oil circuit 52 and realizes oil return, thereby realized shunting oil return, can be because lubricating oil return does not freely cause oil leak, thus 9 leakage of oils of motor pollutant exhaust hole avoided.
Secondly, by transmission shaft dynamic seal apparatus is reasonably designed, bearing inner race back-up ring 1 is optimized to design, bearing inner race back-up ring 1 is fitted on transmission shaft 2, between sealing gland 7 and the boss of bearing inner race back-up ring 1, form oil-feed gap 3, the height in oil-feed gap 3 is reduced, gear engagement anallobar is avoided in oil-feed gap 3, can reduce to greatest extent gear lubricant and scurry into motor-driven end labyrinth by oil-feed gap 3, thereby avoid the leakage of oil of motor pollutant exhaust hole.
Wherein, the first spill port 71 comprises two U-shaped trough drainback passages of ladder, can stop that more lubricant oil enters in oil circuit 4, sealing gland 7 and bearing inner race back-up ring 1 formation labyrinth and labyrinth are communicated with the second spill port 72, can guarantee that lubricant oil all refluxes, thereby avoid 9 leakage of oils of motor pollutant exhaust hole.
Wherein, the bottom of sealing gland 7 contacts with gear-box eckband 6 static seals, and the bottom of return tube 5 has bending part 53, and bending part 53 is dodged out the joint of sealing gland 7 and gear-box eckband 6.Return tube 5 bending designs avoid sealing gland 7 and the gluing in gear-box eckband 6 installation processes to stop up, and have feature easy to assembly.
Concrete, return tube 5 can be by being welded to connect with sealing gland 7, the good airproof performance of welding, and more firm, working life is longer.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a transmission shaft dynamic seal apparatus, is characterized in that, comprises bearing inner race back-up ring, sealing gland and return tube,
Wherein, described bearing inner race retainer-ring press mounting is on transmission shaft, described bearing inner race back-up ring comprises boss, the outside of described boss flushes with the outside of described transmission shaft, described sealing gland and described boss form oil-feed gap, 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 is communicated with described oil circuit
On described sealing gland, be respectively arranged with the first spill port and the second spill port, described return tube is divided into upper oil circuit and lower oil circuit by dividing plate,
Described the first spill port is communicated with described oil-feed gap with described upper oil circuit, described the second spill port is communicated with described oil circuit with described lower oil circuit.
2. transmission shaft dynamic seal apparatus according to claim 1, it is characterized in that, described the first spill port comprises two U-shaped trough drainback passages of ladder, and described sealing gland and described bearing inner race back-up ring form labyrinth and described labyrinth is communicated with described the second spill port.
3. transmission shaft dynamic seal apparatus 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 return tube has bending part, and described bending part is dodged out the joint of described sealing gland and described gear-box eckband.
4. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, described return tube 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 true CN104033579A (en) | 2014-09-10 |
| CN104033579B CN104033579B (en) | 2016-06-15 |
Family
ID=51464488
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033579B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673817A (en) * | 2016-03-17 | 2016-06-15 | 重庆望江工业有限公司 | Sealing structure for output shaft of wind power gear box |
| CN109154380A (en) * | 2016-05-27 | 2019-01-04 | 日本电产株式会社 | actuator |
| CN109468765A (en) * | 2017-09-07 | 2019-03-15 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN113339408A (en) * | 2021-07-08 | 2021-09-03 | 哈电风能有限公司 | Generator single bearing lubrication sealing structure and generator set |
Citations (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 |
| US20010010176A1 (en) * | 1996-06-17 | 2001-08-02 | 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 |
-
2014
- 2014-03-31 CN CN201410127023.9A patent/CN104033579B/en active Active
Patent Citations (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 |
| US20010010176A1 (en) * | 1996-06-17 | 2001-08-02 | 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673817A (en) * | 2016-03-17 | 2016-06-15 | 重庆望江工业有限公司 | Sealing structure for output shaft of wind power gear box |
| 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 |
| CN109154380A (en) * | 2016-05-27 | 2019-01-04 | 日本电产株式会社 | actuator |
| CN109154380B (en) * | 2016-05-27 | 2021-11-09 | 日本电产株式会社 | Actuator |
| CN109468765A (en) * | 2017-09-07 | 2019-03-15 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN113339408A (en) * | 2021-07-08 | 2021-09-03 | 哈电风能有限公司 | Generator single bearing lubrication sealing structure and generator set |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104033579B (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102954194B (en) | Railway vehicle traveling gearbox sealing structure | |
| CN104033579A (en) | Transmission shaft sealing device | |
| CN103452897A (en) | Modified air seal structure | |
| CN203892532U (en) | Movable sealing device for transmission shaft | |
| CN203614449U (en) | Motor seawater pump | |
| CN202612582U (en) | Lubrication structure of transmission gear | |
| CN206439381U (en) | The lubricating structure of planetary gear train spring bearing in wind turbine gearbox | |
| US20160061265A1 (en) | Seal Arrangement for non-contact sealing of anti-friction bearings | |
| CN104747700A (en) | Gear box lubricating system | |
| CN103953721B (en) | A kind of power transmission shaft dynamic sealing device | |
| CN203796911U (en) | Dynamic sealing device for transmission shaft | |
| CN202955203U (en) | Idler device for speed changing box of loading machine | |
| CN102312995B (en) | Interaxial differential lubricating structure of through type drive axle and vehicle | |
| CN202732910U (en) | Mechanical gearbox bearing lubricating system | |
| CN204041438U (en) | Hoghead assembly | |
| CN103423423A (en) | Pumping unit reduction box sealing device | |
| CN202266675U (en) | Seal device for wire drawing machine | |
| CN104455357A (en) | Bearing lubricating device | |
| CN202220846U (en) | Interaxial differential lubricating structure of through type drive axle and vehicle provided with same | |
| CN106594250A (en) | Lubricating mechanism of planetary gear train supporting bearing in wind power gearbox | |
| CN204511916U (en) | A kind of liquid sewage pump | |
| CN104455347A (en) | Bearing sealing device | |
| CN204061836U (en) | Be installed on the bearing lubrication structure of speed reducer on building hoist | |
| CN203756941U (en) | Shaft-end seal oil returning structure of gear box | |
| CN105090457A (en) | Sealing mechanism for reduction gearbox |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |