CN107588183A - A kind of gear case sealing structure - Google Patents
A kind of gear case sealing structure Download PDFInfo
- Publication number
- CN107588183A CN107588183A CN201710893874.8A CN201710893874A CN107588183A CN 107588183 A CN107588183 A CN 107588183A CN 201710893874 A CN201710893874 A CN 201710893874A CN 107588183 A CN107588183 A CN 107588183A
- Authority
- CN
- China
- Prior art keywords
- ring
- chamber
- drain chamber
- waterproof
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 24
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 239000000839 emulsion Substances 0.000 abstract description 3
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of gear case sealing structure, including sealing ring, end cap, waterproof back-up ring, end cap form drain chamber with waterproof back-up ring, and end cap forms oil back chamber with sealing ring, it is characterised in that：Some water stopping troughs are set in waterproof back-up ring horizontal component and positioned at drain chamber position, dentation sealing ring is set in the waterproof back-up ring plane between drain chamber and oil back chamber.The present invention combines traditional labyrinth seal structure, in drain chamber position, water stopping trough is set, drain chamber internal moisture can be avoided to go successively to oil back chamber under siphonage, moisture can splash to waterproof cavity wall in the presence of axletree rotary centrifugal force, discharged from osculum, avoid gear box lubricating oil emulsion from occurring；Increase gently contacts dentation sealing ring between drain chamber and oil back chamber, prevents the oil vapour in oil back chamber from entering drain chamber, realizes strict sealing, makes rail vehicle safe for operation.
Description
Technical field
The invention belongs to rail vehicle uni-drive gear box field, and in particular to a kind of novel non-contact labyrinth seal knot
Structure.
Background technology
Current track vehicles gear-box internal bearings, the working media of gear are dedicated version gear lubricant, are
Oil leakage in the course of work is prevented, introduced contaminants is carried out inside gear-box, and gear-box typically sets sealing structure to make gear
Isolated inside case with outside.Conventional gear case sealing structure has two kinds：Contactless labyrinth structure, contact labyrinth knot
Structure.
So-called contactless labyrinth structure, be substantially exactly revolving part axletree 5, labyrinth ring 3, waterproof back-up ring 6 with it is non-rotating
Do not contacted at work between part gear box end cover 8, bearing block 1, but the labyrinth formed by minim gap 4 between the two
Structure realizes sealing function.Drain chamber 7 is generally comprised in contactless labyrinth structure, when its function is that outside moisture enters casing
It can in time discharge, prevent moisture from entering oil back chamber 2, the function of oil back chamber 2 is lubricating oil is returned to box house in time, is prevented
Lubricating oil enters drain chamber 7, and concrete structure is as shown in Figure 1.
Currently used contactless labyrinth structure, the design structure of waterproof back-up ring is generally traditional annular shape, when outer
When boundary's moisture enters drain chamber, due to pressure differential be present inside and outside gear-box, in the case where axletree rotates at a high speed, labyrinth clearance portion
Position easily produces siphonage, causes the moisture of drain chamber to enter oil back chamber by labyrinth clearance, gear box lubricating oil water content arrives
Up to emulsification whiting can occur afterwards to a certain degree, lubricating ability fails when serious.
The content of the invention
It is an object of the invention to provide a kind of new contactless labyrinth structure, drain chamber internal moisture can be prevented in rainbow
Oil back chamber is gone successively under suction effect, avoids gear box lubricating oil emulsion from occurring；The oil vapour in oil back chamber is prevented simultaneously
Into drain chamber.
For achieving the above object, the present invention provides a kind of gear case sealing structure, including sealing ring, end cap, waterproof
Back-up ring, end cap form drain chamber with waterproof back-up ring, and end cap forms oil back chamber with sealing ring, it is characterised in that：In waterproof back-up ring water
Put down part and some water stopping troughs are set positioned at drain chamber position, set in the waterproof back-up ring plane between drain chamber and oil back chamber
Dentation sealing ring.
Described sealing slot length is 3mm, depth 2mm.
Described water stopping trough is apart from labyrinth clearance at least in more than 5mm.
The described dentation sealing ring number of teeth is no less than 3, and single tooth sealed width is not more than 0.5mm, and the lower gap of static state is not
More than 0.2mm.
The present invention combines traditional labyrinth seal structure, sets water stopping trough in drain chamber position, can avoid in drain chamber
Portion's moisture goes successively to oil back chamber under siphonage, and moisture can splash to waterproof intracavitary in the presence of axletree rotary centrifugal force
Wall, discharged from osculum, avoid gear box lubricating oil emulsion from occurring；Increase light Contact Tooth between drain chamber and oil back chamber
Shape sealing ring, prevent the oil vapour in oil back chamber from entering drain chamber, realize strict sealing, make rail vehicle safe for operation.
Brief description of the drawings
Fig. 1 is the schematic diagram of current contactless labyrinth structure；
Fig. 2 is the structural representation of the specific embodiment of the invention.
Embodiment
Reference picture 1, Fig. 2, the specific embodiment of the invention include sealing ring 3, end cap 8, waterproof back-up ring 9, end cap and waterproof
Back-up ring forms drain chamber 7, and end cap forms oil back chamber 2 with sealing ring, set in waterproof back-up ring horizontal component and positioned at drain chamber position
Two water stopping troughs 10 are put, the water stopping trough can avoid drain chamber internal moisture from going successively to oil back chamber, moisture under siphonage
Waterproof cavity wall can be splashed in the presence of axletree rotary centrifugal force, is discharged from osculum, avoids gear box lubricating oil from emulsifying
Phenomenon occurs；Dentation sealing ring 11 is set in the waterproof back-up ring plane between drain chamber and oil back chamber, and the dentation sealing ring is quiet
State does not contact, and dynamic gently contacts initial stage, prevents the oil vapour in oil back chamber from entering drain chamber.
By calculating and flow field analysis, to make water stopping trough not influence the cooperation intensity of waterproof back-up ring and axletree, while can
Meet water resistance, the suitable dimension of such water stopping trough：Length is 3mm, depth 2mm；For the moisture for preventing water stopping trough from throwing away
Into labyrinth clearance, water stopping trough is apart from labyrinth clearance at least in more than 5mm；The dentation sealing number of teeth is typically no less than 3, single tooth
Shape gently contacts unsuitable excessive, the generally no greater than 0.5mm of sealed width, lower unsuitable excessive, the generally no greater than 0.2mm in gap of static state,
Determined with specific reference to practical structures.
Claims (4)
1. a kind of gear case sealing structure, including sealing ring, end cap, waterproof back-up ring, end cap forms drain chamber, end with waterproof back-up ring
Lid forms oil back chamber with sealing ring, it is characterised in that：In waterproof back-up ring horizontal component and positioned at drain chamber position, some stop is set
Tank, dentation sealing ring is set in the waterproof back-up ring plane between drain chamber and oil back chamber.
A kind of 2. gear case sealing structure according to claim 1, it is characterised in that：Described sealing slot length is 3mm,
Depth is 2mm.
A kind of 3. gear case sealing structure according to claim 1, it is characterised in that：Described water stopping trough is between labyrinth
Gap is at least in more than 5mm.
A kind of 4. gear case sealing structure according to claim 1, it is characterised in that：The described dentation sealing ring number of teeth is not
Less than 3, single tooth sealed width is not more than 0.5mm, and the lower gap of static state is not more than 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893874.8A CN107588183A (en) | 2017-09-28 | 2017-09-28 | A kind of gear case sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893874.8A CN107588183A (en) | 2017-09-28 | 2017-09-28 | A kind of gear case sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107588183A true CN107588183A (en) | 2018-01-16 |
Family
ID=61047286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710893874.8A Withdrawn CN107588183A (en) | 2017-09-28 | 2017-09-28 | A kind of gear case sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588183A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547937A (en) * | 2018-07-09 | 2018-09-18 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of gear train assembly and low-floor light rail vehicle |
| CN109442028A (en) * | 2018-12-20 | 2019-03-08 | 浙江三星机电股份有限公司 | A kind of sealing structure of novel shoe washing machine driving device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205639569U (en) * | 2016-04-07 | 2016-10-12 | 北京康为重工机械制造有限公司 | Output shaft end seal structure , high -speed gear box and use its rail vehicle |
| CN207454727U (en) * | 2017-09-28 | 2018-06-05 | 中车长春轨道客车股份有限公司 | A kind of gear case sealing structure |
-
2017
- 2017-09-28 CN CN201710893874.8A patent/CN107588183A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205639569U (en) * | 2016-04-07 | 2016-10-12 | 北京康为重工机械制造有限公司 | Output shaft end seal structure , high -speed gear box and use its rail vehicle |
| CN207454727U (en) * | 2017-09-28 | 2018-06-05 | 中车长春轨道客车股份有限公司 | A kind of gear case sealing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547937A (en) * | 2018-07-09 | 2018-09-18 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of gear train assembly and low-floor light rail vehicle |
| CN108547937B (en) * | 2018-07-09 | 2024-03-19 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Gear transmission system and low-floor light rail vehicle |
| CN109442028A (en) * | 2018-12-20 | 2019-03-08 | 浙江三星机电股份有限公司 | A kind of sealing structure of novel shoe washing machine driving device |
| CN109442028B (en) * | 2018-12-20 | 2023-09-26 | 浙江三星机电股份有限公司 | Novel shoe washer driving device sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180116 |
|
| WW01 | Invention patent application withdrawn after publication |