CN202756118U - Centrifugal seal structure of diesel engine crankshaft - Google Patents
Centrifugal seal structure of diesel engine crankshaft Download PDFInfo
- Publication number
- CN202756118U CN202756118U CN 201220345040 CN201220345040U CN202756118U CN 202756118 U CN202756118 U CN 202756118U CN 201220345040 CN201220345040 CN 201220345040 CN 201220345040 U CN201220345040 U CN 201220345040U CN 202756118 U CN202756118 U CN 202756118U
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- CN
- China
- Prior art keywords
- crankshaft
- diesel engine
- oil
- flange
- seal structure
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a centrifugal seal structure of a diesel engine crankshaft. The centrifugal seal structure of the diesel engine crankshaft is simple in structure, and can carry out reliable sealing to the lubricating oil inside a crankcase of a diesel engine, and prevents the lubricating oil from leaking. The centrifugal seal structure of the diesel engine crankshaft comprises a diesel engine crankshaft component and an oil slinger, wherein the crankshaft component is connected with a flywheel shell through a crankshaft flange. The centrifugal seal structure of the diesel engine crankshaft is characterized in that the oil slinger is sleeved on the shaft neck of the crankshaft flange, the oil slinger is matched with the shaft neck of the crankshaft flange in interference fit, and the oil slinger is axially located through a locating step surface of the crankshaft flange.
Description
Technical field
The utility model relates to the diesel engine technical field of sealing technology, is specially a kind of centrifugal sealing structure of crankshaft of diesel engine.
Background technique
Existing crankshaft of diesel engine sealing configuration normally adopts disc and oil sealing that lubricant oil is sealed, because oil sealing is easily aging, aging crank shaft oil seal can directly cause leakage of oil, also can consume lubricant oil simultaneously, cause lack of lubrication power to descend, occur high temperature axis tile phenomenon when serious; In addition, if the crank shaft oil seal leakage of oil also can make motor dirty, affect outward appearance.
Summary of the invention
For the problems referred to above, the utility model provides a kind of centrifugal sealing structure of crankshaft of diesel engine, and it is simple in structure, can carry out reliable sealing to the lubricant oil in the diesel engine crankcase, prevents oil leakage.
Its technological scheme is such, it comprises crankshaft of diesel engine assembly and oil thrower ring, described crankshaft group is connected with flywheel casing by crankshaft flange, it is characterized in that: described oil thrower ring is set on the axle journal of described crankshaft flange, the axle journal interference fit of described oil thrower ring and described crankshaft flange, and described oil thrower ring passes through the positioning step over glaze of described crankshaft flange to the location.
It is further characterized in that: the oil guide slot that has annular on the described flywheel casing; The outer circumferential face of the joining section of described crankshaft flange and described flywheel casing has annular oil-return groove; Described annular oil-return groove is provided with four or five.
Adopt the utility model centrifugal sealing structure, its beneficial effect is: thus oil thrower ring is installed on the axle journal of crankshaft flange and is connected with the crankshaft of diesel engine assembly, the oil thrower ring that rotarily drives of crankshaft group rotates simultaneously, a lubricant oil part of falling on the oil thrower ring during diesel engine work is dumped in the crankcase under the centrifugal action of High Rotation Speed, and other a part of lubricant oil is thrown on the flywheel casing by oil thrower ring simultaneously, under the leading role of flywheel casing surface annular oil guide groove, flow to the crankshaft flange surface, and be back to oil sump along the annular oil-return groove of crankshaft flange outer circumferential face, because the outer circumferential face of crankshaft flange and flywheel casing joining section has the oil-return groove of annular, the lubricant oil of falling in the oil-return groove can't be crossed the interface of sharp sudden change on the annular groove, thereby lubricant oil can't be along the outer circumferential flywheel casing end seepage of crankshaft flange, thereby the lubricant oil that effectively prevents from falling on the flywheel casing oozes out from the gap of flywheel casing and crankshaft flange, has guaranteed reliable sealing effect.
Description of drawings
Fig. 1 is the centrifugal sealing structure schematic representation of the utility model crankshaft of diesel engine;
Fig. 2 is the structure for amplifying schematic representation of crankshaft flange in the utility model.
Embodiment
See Fig. 1 and Fig. 2, the utility model comprises crankshaft of diesel engine assembly 3 and oil thrower ring 1, crankshaft group 3 is connected with flywheel casing 4 by crankshaft flange 2, oil thrower ring 1 is set on the axle journal of crankshaft flange 2, the axle journal interference fit of oil thrower ring 1 and crankshaft flange 2, and oil thrower ring 1 is by positioning table terrace 5 axially locating of crankshaft flange.Have the oil guide slot 6 of annular on the flywheel casing 4; Crankshaft flange 2 has annular oil-return groove 7 with the outer circumferential face of the joining section of flywheel casing 4; The annular oil-return groove arranges 7 and is provided with four or five, and annular oil-return groove 7 is provided with five in the present embodiment.
Claims (3)
1. the centrifugal sealing structure of a crankshaft of diesel engine, it comprises crankshaft of diesel engine assembly and oil thrower ring, described crankshaft group is connected with flywheel casing by crankshaft flange, it is characterized in that: described oil thrower ring is set on the axle journal of described crankshaft flange, the axle journal interference fit of described oil thrower ring and described crankshaft flange, and described oil thrower ring passes through the positioning step over glaze of described crankshaft flange to the location.
2. the centrifugal sealing structure of a kind of crankshaft of diesel engine according to claim 1 is characterized in that: have the oil guide slot of annular on the described flywheel casing, the outer circumferential face of the joining section of described crankshaft flange and described flywheel casing has annular oil-return groove.
3. the centrifugal sealing structure of a kind of crankshaft of diesel engine according to claim 2, it is characterized in that: described annular oil-return groove is provided with four or five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345040 CN202756118U (en) | 2012-07-17 | 2012-07-17 | Centrifugal seal structure of diesel engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345040 CN202756118U (en) | 2012-07-17 | 2012-07-17 | Centrifugal seal structure of diesel engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756118U true CN202756118U (en) | 2013-02-27 |
Family
ID=47735305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220345040 Expired - Fee Related CN202756118U (en) | 2012-07-17 | 2012-07-17 | Centrifugal seal structure of diesel engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756118U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748158A (en) * | 2012-07-17 | 2012-10-24 | 无锡动力工程股份有限公司 | Centrifugal sealing structure of crankshaft of diesel engine |
| CN109826720A (en) * | 2018-04-19 | 2019-05-31 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
| CN110925084A (en) * | 2019-11-26 | 2020-03-27 | 河北华北柴油机有限责任公司 | Double-end power take-off diesel generator set |
-
2012
- 2012-07-17 CN CN 201220345040 patent/CN202756118U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748158A (en) * | 2012-07-17 | 2012-10-24 | 无锡动力工程股份有限公司 | Centrifugal sealing structure of crankshaft of diesel engine |
| CN109826720A (en) * | 2018-04-19 | 2019-05-31 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
| CN109826720B (en) * | 2018-04-19 | 2020-07-21 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
| CN110925084A (en) * | 2019-11-26 | 2020-03-27 | 河北华北柴油机有限责任公司 | Double-end power take-off diesel generator set |
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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: 20130227 Termination date: 20180717 |