CN203756357U - Engine crankshaft oil seal sealing structure - Google Patents
Engine crankshaft oil seal sealing structure Download PDFInfo
- Publication number
- CN203756357U CN203756357U CN201420048613.8U CN201420048613U CN203756357U CN 203756357 U CN203756357 U CN 203756357U CN 201420048613 U CN201420048613 U CN 201420048613U CN 203756357 U CN203756357 U CN 203756357U
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- oil seal
- engine
- sealing
- seal
- 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 - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to the field of locomotive engine parts, in particular to a sealing structure between the crankshaft end portion on an engine and a crankshaft box. The engine crankshaft oil seal sealing structure comprises a crankshaft oil seal, a sealing ring, an air cylinder body, a fly wheel, a main shaft bushing, a fly wheel bolt and a crankshaft, wherein the air cylinder body is rigidly and fixedly connected with the main shaft bushing in an interference mode, and a crankshaft and the main shaft bushing form a revolute pair. The sealing ring is pressed and fixed between the fly wheel and the crankshaft in the radial direction of the crankshaft through the fly wheel bolt, and the crankshaft oil seal adheres to the outer circle face of the sealing ring to form a cylindrical sealing face. The engine crankshaft oil seal sealing structure enable the oil seal and the main bearing axial direction to be overlapped, and the total axial length of the engine is shortened. The sealing can be installed from the back side of an oil seal main lip mouth when being installed, and invalid sealing caused by an installing turnup of the main lip mouth is avoided. In addition, due to the fact that the sealing ring and the crankshaft are separated, the engine crankshaft is not required to be replaced in the using process, the sealing ring is singly replaced, and the using cost is low.
Description
Technical field
The utility model relates to locomotive engine field of components, relates in particular to the sealing configuration between crankshaft end and crankcase on a kind of motor.
Background technique
In prior art, engine oil seal lip and crankshaft end be sealed into the laminating of oil seal lip and crankshaft end cylindrical, form column sealed between the two; This seal form has following shortcoming:
1, oil sealing and engine crankshaft main bearing need to be arranged before and after axially, can not be overlapping, and cause motor axial length longer.
2, oil sealing is installed necessary special steering tool, otherwise the main lip of oil sealing there will be flange, causes seal failure.
3, when engine overhaul, due to the wearing and tearing of crank shaft oil seal sealing periphery, need to change bent axle, user's cost of use is high.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of oil seal for crankshaft of engine sealing configuration, sealing mechanism is provided with a seal ring separating with bent axle, shorten motor axial overall length, in use can be without changing engine crankshaft, change separately seal ring, user cost is low.
The utility model is achieved in that a kind of oil seal for crankshaft of engine sealing configuration, comprise crank shaft oil seal, seal ring, cylinder block, flywheel, main axle bush, bolt of flywheel and bent axle, described cylinder block rigidly fixes and is connected with main axle bush interference, and described bent axle and main axle bush form revolute pair; Described seal ring is radially pressed abd fixed between flywheel and bent axle by bolt of flywheel along bent axle, and the periphery laminating of described crank shaft oil seal and seal ring forms cylindrical seal face.
One end that described seal ring is positioned at bent axle is provided with flange, and seal ring utilizes flange and bent axle coaxial positioning.
Described seal ring adopts steel plate integrally formed.
The diameter of described crank shaft oil seal and seal ring is greater than the diameter of main axle bush.
Between described seal ring and flywheel, bolt of flywheel, bent axle, adopt rubber ring static sealing.
In the utility model oil seal for crankshaft of engine sealing configuration, be provided with a seal ring separating with bent axle, between the cylindrical of seal ring and oil sealing, laminating forms cylindrical seal circle, and oil sealing and main bearing axially can be overlapping like this, shorten motor axial overall length; Seal ring can be installed from the main lip of the oil sealing back side when mounted, avoids main lip that flange is installed and causes seal failure; Because seal ring separates with bent axle, in use can, without changing engine crankshaft, change separately seal ring in addition, user cost is low; Meanwhile, sealing ring and bent axle together rotate, and play the oil effect of getting rid of, and the oil level that arrives the main lip of oil sealing is little, strengthen oil sealing sealing function, and the utility model compact structure, simple installation can be applied at other as the sealing of the shaft end of gearbox etc.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model oil seal for crankshaft of engine sealing configuration;
Fig. 2 is the enlarged diagram in seal ring flange region in the utility model.
In figure: 1 crank shaft oil seal, 2 seal rings, 3 cylinder block, 4 flywheels, 5 main axle bushs, 6 bolts of flywheel, 7 bent axles, 21 flange.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model statement, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
A kind of oil seal for crankshaft of engine sealing configuration as shown in Figure 1, comprise crank shaft oil seal 1, seal ring 2, cylinder block 3, flywheel 4, main axle bush 5, bolt of flywheel 6 and bent axle 7, described cylinder block 3 rigidly fixes and is connected with main axle bush 5 interference, and described bent axle 7 forms revolute pair with main axle bush 5; Described seal ring 2 is radially pressed abd fixed between flywheel 4 and bent axle 7 by bolt of flywheel 6 along bent axle 7, making seal ring 2 follow bent axle 7 rotates together, described crank shaft oil seal 1 forms cylindrical seal face with the periphery laminating of seal ring 2, and the oil gas in canned motor crankcase does not drain to beyond motor.
In model utility, coaxality in order to ensure seal ring 2 with bent axle 7, makes seal ring 2 in coaxality, the vibration etc. of following bent axle 7 sealing ring surface while rotating, as shown in Figure 2, one end that described seal ring 2 is positioned at bent axle 7 is provided with flange 21, and seal ring 2 utilizes flange and bent axle 7 coaxial positioning; In the present embodiment, described seal ring 2 adopts steel plate integrally formed, and body and the flange of seal ring are as a whole.
In the present embodiment, the diameter of described crank shaft oil seal 1 and seal ring 2 is greater than the diameter of main axle bush 5.
In addition, in order to ensure sealability, between described seal ring 2 and flywheel 4, bolt of flywheel 6, bent axle 7, adopt rubber ring static sealing.
Claims (5)
1. an oil seal for crankshaft of engine sealing configuration, it is characterized in that: comprise crank shaft oil seal (1), seal ring (2), cylinder block (3), flywheel (4), main axle bush (5), bolt of flywheel (6) and bent axle (7), described cylinder block (3) rigidly fixes and is connected with main axle bush (5) interference, and described bent axle (7) forms revolute pair with main axle bush (5); Described seal ring (2) is radially pressed abd fixed between flywheel (4) and bent axle (7) by bolt of flywheel (6) along bent axle (7), and described crank shaft oil seal (1) forms cylindrical seal face with the periphery laminating of seal ring (2).
2. oil seal for crankshaft of engine sealing configuration as claimed in claim 1, it is characterized in that: one end that described seal ring (2) is positioned at bent axle (7) is provided with flange (21), seal ring (2) utilizes flange and bent axle (7) coaxial positioning.
3. oil seal for crankshaft of engine sealing configuration as claimed in claim 2, is characterized in that: described seal ring (2) adopts steel plate integrally formed.
4. oil seal for crankshaft of engine sealing configuration as claimed in claim 1, is characterized in that: the diameter of described crank shaft oil seal (1) and seal ring (2) is greater than the diameter of main axle bush (5).
5. oil seal for crankshaft of engine sealing configuration as claimed in claim 1, is characterized in that: described seal ring (2) and flywheel (4), bolt of flywheel (6), bent axle adopt rubber ring static sealing between (7).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420048613.8U CN203756357U (en) | 2014-01-26 | 2014-01-26 | Engine crankshaft oil seal sealing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420048613.8U CN203756357U (en) | 2014-01-26 | 2014-01-26 | Engine crankshaft oil seal sealing structure |
Publications (1)
Publication Number | Publication Date |
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CN203756357U true CN203756357U (en) | 2014-08-06 |
Family
ID=51251642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201420048613.8U Expired - Fee Related CN203756357U (en) | 2014-01-26 | 2014-01-26 | Engine crankshaft oil seal sealing structure |
Country Status (1)
Country | Link |
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CN (1) | CN203756357U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113944563A (en) * | 2020-07-16 | 2022-01-18 | 发动机引擎解决方案知识产权股份有限公司 | Multi-position crankshaft lip seal |
-
2014
- 2014-01-26 CN CN201420048613.8U patent/CN203756357U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113944563A (en) * | 2020-07-16 | 2022-01-18 | 发动机引擎解决方案知识产权股份有限公司 | Multi-position crankshaft lip seal |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20220126 |