CN203796911U - Dynamic sealing device for transmission shaft - Google Patents
Dynamic sealing device for transmission shaft Download PDFInfo
- Publication number
- CN203796911U CN203796911U CN201420151456.3U CN201420151456U CN203796911U CN 203796911 U CN203796911 U CN 203796911U CN 201420151456 U CN201420151456 U CN 201420151456U CN 203796911 U CN203796911 U CN 203796911U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- gap
- oil returning
- oil
- gland
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 210000004907 gland Anatomy 0.000 claims abstract description 27
- 238000005452 bending Methods 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 64
- 239000010687 lubricating oil Substances 0.000 abstract description 9
- 238000005192 partition Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Abstract
The utility model discloses a dynamic sealing device for a transmission shaft. The dynamic sealing device for the transmission shaft comprises a bearing inner race retainer ring, a sealing cover, a gland and an oil returning pipe, wherein the bearing inner race retainer ring is arranged on the transmission shaft in a pressing manner; 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 race retainer ring and the sealing cover; a first oil returning hole is formed in the sealing cover; a second oil returning hole is formed in the gland; the oil returning pipe is divided into an upper oil returning channel and a lower oil returning channel through a partition; the first gap is connected with the upper oil returning channel by the first oil returning hole; and the second gap is connected with the lower oil returning channel by the second oil returning hole. The transmission shaft drives a gear to rotate; when lubricating oil enters the dynamic sealing device from the first gap, part of the lubricating oil enters the first oil returning hole and returns via the upper oil returning channel; when the oil returning capability of the first oil returning hole is insufficient, part of the lubricating oil enters the second gap, enters the lower oil returning channel via the second oil returning hole and then returns, so that distributed oil returning is realized; and a phenomenon that the lubricating oil leaks due to the fact that the lubricating oil does not return smoothly is avoided, so that oil is prevented against leaking from a blow-off hole of a motor.
Description
Technical field
The utility model relates to transmission shaft dynamic sealing technology field, relates 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.
Model utility content
In view of this, the purpose of this utility model 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 utility model 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.
The transmission shaft dynamic seal apparatus that the utility model provides, 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 utility model embodiment 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 embodiments more of the present utility model, 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 utility model embodiment.
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 utility model embodiment provides a kind of transmission shaft dynamic seal apparatus, to avoid the leakage of oil of motor pollutant exhaust hole.
For making the utility model embodiment's object, technological scheme and advantage clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the sectional structure schematic diagram of the transmission shaft dynamic seal apparatus that Fig. 1 provides for the utility model embodiment.
The transmission shaft dynamic seal apparatus that the utility model embodiment 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 utility model.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 spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model 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 |
|---|---|---|---|
| CN201420151456.3U CN203796911U (en) | 2014-03-31 | 2014-03-31 | Dynamic sealing device for transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151456.3U CN203796911U (en) | 2014-03-31 | 2014-03-31 | Dynamic sealing device for transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796911U true CN203796911U (en) | 2014-08-27 |
Family
ID=51379123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151456.3U Expired - Lifetime CN203796911U (en) | 2014-03-31 | 2014-03-31 | Dynamic sealing device for transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953721A (en) * | 2014-03-31 | 2014-07-30 | 南车株洲电力机车有限公司 | Dynamic sealing device of transmission shaft |
-
2014
- 2014-03-31 CN CN201420151456.3U patent/CN203796911U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953721A (en) * | 2014-03-31 | 2014-07-30 | 南车株洲电力机车有限公司 | Dynamic sealing device of transmission shaft |
| CN103953721B (en) * | 2014-03-31 | 2016-05-25 | 南车株洲电力机车有限公司 | A kind of power transmission shaft dynamic sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |