CN205013685U - Floating diesel engine bent axle oil blanket - Google Patents
Floating diesel engine bent axle oil blanket Download PDFInfo
- Publication number
- CN205013685U CN205013685U CN201520674094.0U CN201520674094U CN205013685U CN 205013685 U CN205013685 U CN 205013685U CN 201520674094 U CN201520674094 U CN 201520674094U CN 205013685 U CN205013685 U CN 205013685U
- Authority
- CN
- China
- Prior art keywords
- bent axle
- grip assembly
- lips
- cover plate
- 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.)
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Links
- 238000007667 floating Methods 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 35
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 5
- 239000010721 machine oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a floating diesel engine bent axle oil blanket, it is the rubber layer that its structure is the inboard of bent axle cover subassembly, the outside is the metal covering, and the rubber layer is fixed with bent axle interference fit. Main lip piece is laminated with the axial face of cylinder of metal covering, vice lip piece is laminated with the radial terminal surface of metal covering. Apron cover subassembly comprises rubber sleeve and support frame, and vice lip piece is inlayed in the front end of support frame, apron cover subassembly roof pressure owner lip piece, and apron cover subassembly is fixed by the diesel engine apron. Main lip piece forms first oil seal area with the metal covering axial face of cylinder, vice lip piece forms second oil seal area with the radial terminal surface of metal covering. Change the direct mode who contacts with the bent axle of traditional slidingtype oil blanket seal lip, formed the inside form sliding seal in order to float of oil blanket, avoided an oily lip and bent axle contact wear. Increase the terminal surface and sealed oily lip, obviously improved the sealed effect of oil blanket, improved the operational reliability of oil blanket to stop to arouse oil blanket early wear because the dust is intervene.
Description
Technical field
The utility model belongs to engine components, is specifically related to a kind of oil-sealing arrangement of diesel engine machine crankshaft.
Background technique
Current Large freight automobile adopts diesel engine as power mostly, and as everyone knows, bent axle is one of critical component in motor, and crankshaft seal performance is all vital for petrol engine and diesel engine.
In order to prevent the outside seepage from the bent axle rotated of the machine oil in crankcase, be all equipped with crank shaft oil seal.Under the prerequisite not increasing crank rotation resistance, its sealability is the stricter the better.The oil sealing of current conventional diesel machine crankshaft all adopts sliding type oil sealing, and namely oil sealing lip is directly adjacent to bent axle cylinder, forms sealing strip.Owing to contacting with slip form between bent axle cylinder with oil sealing lip, cause wearing and tearing by the cylinder of bent axle after friction over a long time, and this wearing and tearing are unrepairables.Namely oil sealing leak if because crankshaft wear caused by, so this bent axle even motor can only scrap process.On the other hand, this traditional type oil seal structure due to oil sealing lip and oily medium contact too much, sealing and anti-dust performance undesirable, easily there is oil leakage fault, maintenance cost increased.
The crank shaft oil seal structure that the utility model proposes, while guarantee sealing is good, can effectively alleviate the wearing and tearing caused between bent axle cylinder and oil sealing lip.
Summary of the invention
For solving the problem, the purpose of this utility model is, proposes a kind of floating type Oil Seals in Crankshafts structure, while avoiding engine oil leakage, reduces the wearing and tearing to bent axle.
The technical pattern that the utility model is taked is, floating type Oil Seals in Crankshafts comprises: bent axle, bent axle grip assembly, main lips, secondary lips, cover plate grip assembly and diesel engine cover plate etc.Bent axle grip assembly is made up of rubber layer and metallic sheath, and the inner side of assembly is rubber layer; Outside is metallic sheath, and rubber layer and bent axle interference fit are fixed together, and bent axle grip assembly rotates with bent axle simultaneously.The axial circular cylinder of main lips and metallic sheath fits together; The radial end face of secondary lips and metallic sheath fits together.Cover plate grip assembly is made up of rubber sleeve and supporting frame, and secondary lips is embedded in the front end of supporting frame.Main lips is pressed on cover plate grip assembly top, and the metallic sheath axial circular cylinder of main lips and bent axle grip assembly forms the first oil sealing sealing strip; The radial end face of secondary lips and bent axle grip assembly metallic sheath forms the second oil seal band.Axial circular cylinder and the diesel engine cover plate interference fit of cover plate grip assembly rubber sleeve are fixed together, and the metallic sheath of main lips and secondary lips and bent axle grip assembly relatively rotates, and forms floating type hermetical structure.
Theory structure of the present utility model is, crankshaft of diesel engine is provided with two cover oil sealing bands.Bent axle grip assembly and bent axle interference fit are fixed, and namely assembly and bent axle do not have relative movement, and bent axle grip assembly rotates with bent axle.Main lips and bent axle grip assembly external cylindrical surface form an oil sealing band, and are provided with oil drive back thread in this side of main lips, have pumping function in rotation process, make the direct blowback of very most of machine oil.Secondary lips and bent axle grip assembly end face also form an oil sealing band, and this oil sealing plays grease proofing, dust-proof effect.
The beneficial effect of advantage of the present utility model and generation is, changes the mode of operation that conventional slide type oil sealing sealing lip directly contacts with bent axle, defines oil sealing inner with the form slipper seal of floating, avoids oil sealing lip and bent axle contact wear.The utility model, while improvement traditional mode, adds end face oil sealing lip, significantly improves oil sealing sealing effect.Increase end face seal, significantly improve the performance of oil sealing.The enclosed construction that oil sealing unit is formed, improves the functional reliability of oil sealing, and stops to get involved due to dust to cause oil sealing premature wear.
Accompanying drawing explanation
Shown accompanying drawing is Principles and methods figure of the present utility model, and the sealing configuration of bent axle is symmetrical, so this figure is the half of oil seal structure.
Embodiment
Principles and methods of the present utility model to be further described by embodiment below in conjunction with accompanying drawing.The structure of floating type Oil Seals in Crankshafts is: bent axle grip assembly is made up of rubber layer 1-1 and metallic sheath 1-2, and the inner side of assembly is rubber layer; Outside is metallic sheath, and rubber layer and bent axle 2 interference fit are fixed together, and bent axle grip assembly rotates with bent axle simultaneously.Main lips 3 fits together with the axial circular cylinder of metallic sheath; Secondary lips 4 fits together with the radial end face of metallic sheath.Cover plate grip assembly is made up of rubber sleeve 5-1 and supporting frame 5-2, and secondary lips is embedded in the front end of supporting frame, and main lips is pressed on cover plate grip assembly top, and cover plate grip assembly is fixed by diesel engine cover plate.The metallic sheath axial circular cylinder of main lips and bent axle grip assembly forms the first oil sealing sealing strip; The radial end face of secondary lips and bent axle grip assembly metallic sheath forms the second oil seal band.Axial circular cylinder and diesel engine cover plate 6 interference fit of cover plate grip assembly rubber sleeve are fixed together, and the metallic sheath of main lips and secondary lips and bent axle grip assembly relatively rotates, and form floating type oil seal structure.
Bent axle is contacted with lips by bent axle grip assembly, avoids the contact wear of oil sealing lip and bent axle.Main lips adopts teflon material to make, and the inner side of main lips is provided with oil drive back thread.The supporting frame of cover plate grip assembly is metal frame.Cover plate grip assembly and diesel engine cover plate interference fit are fixed, support outer cladding rubber, and static seal is very good.
The main lips that teflon material is made is provided with oil drive back thread, and its principle is, main lips and metallic sheath axial circular cylinder are fitted to contact and had gap and exist, and the effect of oil drive back thread is exactly form an oil return path at the surface of contact of main lips and metallic sheath.The oil seal band that major and minor lips is formed in the both direction (in other words two surface of contact) of bent axle grip assembly metallic sheath, floats with crank rotation during work, so be called floating type oil seal structure.The main lips of teflon material has very strong Memorability, followability, automatically can hold oil-sealing mouth tightly, and dimensional stability is very strong.Thermostability is fabulous simultaneously, and+260 DEG C time, rupture strength remains on more than 5Mpa.
Claims (3)
1. floating type Oil Seals in Crankshafts, comprise: bent axle, bent axle grip assembly, main lips, secondary lips, cover plate grip assembly and diesel engine cover plate, it is characterized in that: bent axle grip assembly is made up of rubber layer (1-1) and metallic sheath (1-2), the inner side of assembly is rubber layer; Outside is metallic sheath, and rubber layer and bent axle (2) interference fit are fixed together, and bent axle grip assembly rotates with bent axle simultaneously, and main lips (3) fits together with the axial circular cylinder of metallic sheath; Secondary lips (4) fits together with the radial end face of metallic sheath, cover plate grip assembly is made up of rubber sleeve (5-1) and supporting frame (5-2), secondary lips is embedded in the front end of supporting frame, main lips is pressed on cover plate grip assembly top, and the metallic sheath axial circular cylinder of main lips and bent axle grip assembly forms the first oil sealing sealing strip; The radial end face of secondary lips and bent axle grip assembly metallic sheath forms the second oil seal band, axial circular cylinder and diesel engine cover plate (6) interference fit of cover plate grip assembly rubber sleeve are fixed together, the metallic sheath of main lips and secondary lips and bent axle grip assembly relatively rotates, and forms floating type oil seal structure.
2. according to floating type Oil Seals in Crankshafts according to claim 1, it is characterized in that: adopt teflon material to make in described main lips, the inner side of main lips is provided with oil drive back thread.
3. according to floating type Oil Seals in Crankshafts according to claim 1, it is characterized in that: the supporting frame of described cover plate grip assembly is metal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520674094.0U CN205013685U (en) | 2015-09-01 | 2015-09-01 | Floating diesel engine bent axle oil blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520674094.0U CN205013685U (en) | 2015-09-01 | 2015-09-01 | Floating diesel engine bent axle oil blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013685U true CN205013685U (en) | 2016-02-03 |
Family
ID=55212289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520674094.0U Active CN205013685U (en) | 2015-09-01 | 2015-09-01 | Floating diesel engine bent axle oil blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156677A (en) * | 2015-09-01 | 2015-12-16 | 东风朝阳朝柴动力有限公司 | Floating diesel engine crankshaft oil seal |
-
2015
- 2015-09-01 CN CN201520674094.0U patent/CN205013685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156677A (en) * | 2015-09-01 | 2015-12-16 | 东风朝阳朝柴动力有限公司 | Floating diesel engine crankshaft oil seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Floating diesel engine crankshaft oil seal Effective date of registration: 20190612 Granted publication date: 20160203 Pledgee: Lingyuan steel enterprise limited liability company Pledgor: Dongfeng Chaoyang Chaochai Power Co., Ltd. Registration number: 2019210000021 |