CN103953721A - Dynamic sealing device of transmission shaft - Google Patents
Dynamic sealing device of transmission shaft Download PDFInfo
- Publication number
- CN103953721A CN103953721A CN201410125827.5A CN201410125827A CN103953721A CN 103953721 A CN103953721 A CN 103953721A CN 201410125827 A CN201410125827 A CN 201410125827A CN 103953721 A CN103953721 A CN 103953721A
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- oil return
- gap
- sealing cover
- oil
- 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
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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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- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0472—Seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- General Details Of Gearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a dynamic sealing device of a transmission shaft. The dynamic sealing device comprises a bearing inner ring check ring, a sealing cover, a pressing cover and an oil return pipe, wherein the bearing inner ring check ring is pressed and arranged on the transmission shaft, a first gap is formed between the sealing cover and the transmission shaft, a second gap is formed between the left side of the bearing inner ring check ring and the sealing cover, the sealing cover is provided with a first oil return hole, the pressing cover is provided with a second oil return hole, the oil return pipe is divided into an upper oil return way and a lower oil return way through a baffle plate, the first gap is communicated with the upper oil return way through the first oil return hole, and the second gap is communicated with the lower oil return way through the second oil return hole. The transmission shaft drives a gear to rotate, a part of lubricating oil enters into the first oil return hole when the lubricating oil enters into the first gap, and oil return is realized through the upper oil return way; when the oil return capacity of the first oil return hole is insufficient, a part of the lubricating oil enters into the second gap, and the oil return is realized as the lubricating oil enters into the lower oil return way through the second oil return hole; split-flow oil return is realized, the leakage of the lubricating oil due to unsmooth oil return of the lubricating oil cannot be caused, and thus the oil leakage of a sewage discharge hole of an electric motor is avoided.
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, for the engine truck drive unit of 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 cover, gland and return tube, wherein, described bearing inner race retainer-ring press mounting is on transmission shaft, between described sealing cover and described transmission shaft, form the first gap, between the left side of described bearing inner race back-up ring and described sealing cover, form the second gap, on described sealing cover, be provided with the first spill port, on described gland, be provided with 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 the first gap with described upper oil circuit, described the second spill port is communicated with described the second gap with described lower oil circuit.
Preferably, above-mentioned the first spill port comprises two sub-drainback passages.
Preferably, the bottom of above-mentioned gland contacts with gear-box eckband static seal, and the bottom of described return tube has first fold crook, and the joint of described sealing gland and described gear-box eckband is dodged out in described first fold crook.
Preferably, the top of above-mentioned return tube has the second bending part, and described the second bending part is dodged and opened the gear being positioned on described transmission shaft.
Preferably, above-mentioned sealing cover is connected by a circle rivet with described gland.
Preferably, above-mentioned return tube is connected by rivet with described gland.
Preferably, on above-mentioned gland, being provided with the U-shaped oil trap of twice is communicated with described the second spill port.
Transmission shaft dynamic seal apparatus provided by the invention, comprise bearing inner race back-up ring, sealing cover, gland and return tube, wherein, described bearing inner race retainer-ring press mounting is on transmission shaft, between described sealing cover and described transmission shaft, form the first gap, between the left side of described bearing inner race back-up ring and described sealing cover, form the second gap, on described sealing cover, be provided with the first spill port, on described gland, be provided with 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 the first gap with described upper oil circuit, described the second spill port is communicated with described the second gap with described lower oil circuit.
When use, transmission shaft driven gear rotates, in the time having lubricant oil to enter from the first gap, a part enters into the first spill port, then realizes oil return through upper oil circuit, when the first spill port oil return scarce capacity, parts of lubricating oil enters into the second gap, then enters into lower oil circuit through the second spill port and realizes oil return, thereby realized shunting oil return, can not cause oil leakage because lubricating oil return has some setbacks, thereby avoid the leakage of oil of motor pollutant exhaust hole.
Brief description of the drawings
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 skill in the art, 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, transmission shaft 2, gland 3, the second spill port 31, U-shaped oil trap 32, sealing cover 4, the first spill port 41, return tube 5, upper oil circuit 51, lower oil circuit 52, first fold crook 53, the second bending part 54, gear 6, gear-box eckband 7, the first gap 8, the second gap 9, motor pollutant exhaust hole 10.
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, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, 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 cover 4, gland 3 and return tube 5, wherein, bearing inner race back-up ring 1 is fitted on transmission shaft 2, between sealing cover 4 and transmission shaft 2, form the first gap 8, between the left side of bearing inner race back-up ring 1 and sealing cover 4, form the second gap 9, on sealing cover 4, be provided with the first spill port 41, on gland 3, be provided with the second spill port 31, return tube 5 is divided into upper oil circuit 51 and lower oil circuit 52 by dividing plate, the first spill port 41 is communicated with the first gap 8 with upper oil circuit 51, the second spill port 31 is communicated with the second gap 9 with lower oil circuit 52.
When use, transmission shaft 2 driven gears 6 rotate, in the time having lubricant oil to enter from the first gap 8, a part enters into the first spill port 41, then in upper oil circuit 51, realize oil return, when the first spill port oil return scarce capacity, parts of lubricating oil enters into the second gap 9, then enter into lower oil circuit 52 through the second spill port 31 and realize oil return, thereby realize shunting oil return, oil return better effects if, oil return speed is more unobstructed, can not cause oil leakage because lubricating oil return has some setbacks, thereby avoid 10 leakage of oils of motor pollutant exhaust hole.
In order to improve oil return effect, the first spill port 41 comprises two sub-drainback passages, can from the first gap 8, obtain more lubricant oil.
Wherein, the bottom of gland 3 contacts with gear-box eckband 7 static seals, and the bottom of return tube 5 has first fold crook 53, and the joint of gland 3 and gear-box eckband 7 is dodged out in first fold crook 53.Reflow pipe bending design avoids gland 3 and the gluing in gear-box eckband 7 installation processes to stop up, and has feature easy to assembly.Meanwhile, the top of return tube 5 also has the second bending part 54, the second bending parts 54 dodges and opens the gear 6 being positioned on transmission shaft 2, can not interfere with the normal work of gear 6.
Concrete, sealing cover 4 is connected by a circle rivet with gland 3, can improve join strength, and ensure sealing effect.Return tube 5 also can be connected by rivet with gland 3, easy to assembly.
Concrete, on gland 3, be provided with the U-shaped oil trap 32 of twice and be communicated with the second spill port 31, can ensure that lubricant oil all refluxes, thereby avoid the leakage of oil of motor pollutant exhaust hole 10.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to these embodiments' multiple amendment, 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 (7)
1. a transmission shaft dynamic seal apparatus, is characterized in that, comprises bearing inner race back-up ring, sealing cover, gland and return tube,
Wherein, described bearing inner race retainer-ring press mounting, on transmission shaft, forms the first gap between described sealing cover and described transmission shaft, between the left side of described bearing inner race back-up ring and described sealing cover, forms the second gap,
On described sealing cover, be provided with the first spill port, be provided with the second spill port on described gland, 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 the first gap with described upper oil circuit, described the second spill port is communicated with described the second gap with described lower oil circuit.
2. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, described the first spill port comprises two sub-drainback passages.
3. transmission shaft dynamic seal apparatus according to claim 1, it is characterized in that, the bottom of described gland contacts with gear-box eckband static seal, and the bottom of described return tube has first fold crook, and the joint of described sealing gland and described gear-box eckband is dodged out in described first fold crook.
4. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, the top of described return tube has the second bending part, and described the second bending part is dodged and opened the gear being positioned on described transmission shaft.
5. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, described sealing cover is connected by a circle rivet with described gland.
6. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, described return tube is connected by rivet with described gland.
7. transmission shaft dynamic seal apparatus according to claim 1, is characterized in that, is provided with the U-shaped oil trap of twice and is communicated with described the second spill port on described gland.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410125827.5A CN103953721B (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 |
---|---|---|---|
CN201410125827.5A CN103953721B (en) | 2014-03-31 | 2014-03-31 | A kind of power transmission shaft dynamic sealing device |
Publications (2)
Publication Number | Publication Date |
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CN103953721A true CN103953721A (en) | 2014-07-30 |
CN103953721B CN103953721B (en) | 2016-05-25 |
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CN201410125827.5A Active CN103953721B (en) | 2014-03-31 | 2014-03-31 | A kind of power transmission shaft dynamic sealing device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104455347A (en) * | 2014-11-28 | 2015-03-25 | 苏州市吴中区大陆电子设备厂 | Bearing sealing device |
CN108150615A (en) * | 2018-02-01 | 2018-06-12 | 西安航天动力研究所 | A kind of latent liquid type planetary reduction gear |
Citations (5)
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 |
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 |
CN203796911U (en) * | 2014-03-31 | 2014-08-27 | 南车株洲电力机车有限公司 | Dynamic sealing device for transmission shaft |
-
2014
- 2014-03-31 CN CN201410125827.5A patent/CN103953721B/en active Active
Patent Citations (5)
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 |
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 |
CN203796911U (en) * | 2014-03-31 | 2014-08-27 | 南车株洲电力机车有限公司 | Dynamic sealing device for transmission shaft |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104455347A (en) * | 2014-11-28 | 2015-03-25 | 苏州市吴中区大陆电子设备厂 | Bearing sealing device |
CN108150615A (en) * | 2018-02-01 | 2018-06-12 | 西安航天动力研究所 | A kind of latent liquid type planetary reduction gear |
CN108150615B (en) * | 2018-02-01 | 2020-06-30 | 西安航天动力研究所 | Submerged planetary reducer |
Also Published As
Publication number | Publication date |
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CN103953721B (en) | 2016-05-25 |
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