CN201334964Y - Diesel engine crankshaft oil seal - Google Patents
Diesel engine crankshaft oil seal Download PDFInfo
- Publication number
- CN201334964Y CN201334964Y CNU2008202333409U CN200820233340U CN201334964Y CN 201334964 Y CN201334964 Y CN 201334964Y CN U2008202333409 U CNU2008202333409 U CN U2008202333409U CN 200820233340 U CN200820233340 U CN 200820233340U CN 201334964 Y CN201334964 Y CN 201334964Y
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- crankshaft
- fixed
- shaft housing
- positioning bushing
- 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
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a diesel engine crankshaft oil seal, which comprises a shaft housing, an internal positioning bushing, an external positioning bushing and a framework, wherein the inner side of the shaft housing is the internal positioning bushing which is fixed on a crankshaft; the framework is fixed on a diesel engine body or a gear chamber; a seal lip is arranged between the shaft housing and the framework; the internal positioning bushing is matched with the crankshaft in an interference fit manner; the framework is fixed in the oil seal-mounting hole of the diesel engine body or the gear chamber through the external positioning bushing; and the external positioning bushing is matched with the oil seal-mounting hole in an interference fit manner. The utility model has the following advantages: since the shaft housing is fixed on the crankshaft through the internal positioning bushing and the seal lip is arranged between the shaft housing and the framework, when a diesel engine operates, only the shaft housing is abraded, while the crankshaft cannot be abraded, consequently, the crankshaft does not need to be replaced even after the diesel engine operates for a long time, and thereby the replacement and maintenance costs of the diesel engine crankshaft are greatly reduced.
Description
Technical field
The utility model relates to a kind of oil sealing, particularly a kind of Oil Seals in Crankshafts.
Background technique
For preventing the leakage of oil vertically of bent axle front end and back end, oil-sealing arrangement is housed all during diesel engine work.The front and rear oil seals of present diesel engine all is to adopt the outside framework oil seal form, the bent axle surface directly with the sealing lip contact friction of oil sealing, oil sealing and bent axle relatively rotate, bent axle is easy to wear after long-time the use, and replacing bent axle not only cost height but also troublesome poeration.
Summary of the invention
Problem to be solved in the utility model is: a kind of Oil Seals in Crankshafts is provided, and this oil sealing is in the diesel engine operation, and axle sleeve only can wear and tear, and can not cause wearing and tearing to bent axle, therefore behind the long-play, need not change bent axle, greatly reduce the replacing and the maintenance cost of crankshaft of diesel engine.
In order to solve the problems of the technologies described above, Oil Seals in Crankshafts of the present utility model, comprise axle sleeve, positioned internal cover, outside setting sleeve and skeleton, the inboard of described axle sleeve is the positioned internal cover, described positioned internal cover is fixed on the bent axle, described skeletal fixation is on diesel-engine body or gear chamber, and described sealing lip is located between axle sleeve and the skeleton.
Oil Seals in Crankshafts of the present utility model, described positioned internal cover is an interference fit with bent axle.
Oil Seals in Crankshafts of the present utility model, described skeleton are fixed on by outside setting sleeve on the seal mounting hole of diesel-engine body or gear chamber, and described outside setting sleeve and seal mounting hole are interference fit.
The beneficial effect that the utility model is obtained is: axle sleeve is fixed on the bent axle by the positioned internal cover, sealing lip is located between axle sleeve and the skeleton, in the diesel engine operation, axle sleeve only can wear and tear, and can not cause wearing and tearing to bent axle, therefore behind the diesel engine long-play, need not change bent axle, thereby greatly reduce the replacing and the maintenance cost of crankshaft of diesel engine.
Description of drawings
Fig. 1 is the structural representation of oil sealing on the bent axle front axle.
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Fig. 3 is the structural representation of oil sealing on the bent axle rear axle.
Fig. 4 is the partial enlarged drawing at B place among Fig. 3.
Among the figure: 1, diesel-engine body, 2, oil sealing, 3, bent axle, 4, outside setting sleeve, 5, skeleton, 6, the positioned internal cover, 7, axle sleeve, 8, sealing lip, 9, gear chamber.
Embodiment
As depicted in figs. 1 and 2, Oil Seals in Crankshafts 2 of the present utility model, be installed on the front axle of bent axle 3, comprise axle sleeve 7, positioned internal cover 6, outside setting sleeve 4, skeleton 5 and sealing lip 8, the inboard of described axle sleeve 7 is positioned internal cover 6, described positioned internal cover 6 is fixed on the bent axle 3, and described skeleton 5 is fixed on the diesel-engine body 1, and described sealing lip 8 is located between axle sleeve 7 and the skeleton 5; Described positioned internal cover 6 is an interference fit with bent axle 3; Described skeleton 5 is fixed on the seal mounting hole on the diesel-engine body 1 by outside setting sleeve 4, and described outside setting sleeve 4 is an interference fit with seal mounting hole.
Owing to have said structure, so during bent axle 3 rotations, axle sleeve 7 contacts with sealing lip 8 and can produce friction, bent axle 3 is not then tied with sealing lip 8 and is not touched, and does not have wearing and tearing.Therefore 8 wearing and tearing of oil sealing lip is axle sleeve 7, after long-time the use, can change oil sealing 2 when axle sleeve 7 wearing and tearing are relatively more severe, and need not change bent axle 3.
As shown in Figure 3 and Figure 4, Oil Seals in Crankshafts 2 of the present utility model is installed on the rear axle of bent axle 3, and described skeleton 5 is fixed on the seal mounting hole on the gear chamber 9 by outside setting sleeve 4, and described outside setting sleeve 4 is an interference fit with seal mounting hole.Other structure and usage are substantially the same manner as Example 1.
Claims (3)
1. Oil Seals in Crankshafts, it is characterized in that: comprise axle sleeve (7), positioned internal cover (6), outside setting sleeve (4), skeleton (5) and sealing lip (8), the inboard of described axle sleeve (7) is positioned internal cover (6), described positioned internal cover (6) is fixed on the bent axle (3), described skeleton (5) is fixed on diesel-engine body (1) or the gear chamber (9), and described sealing lip (8) is located between axle sleeve (7) and the skeleton (5).
2. crankshaft of diesel engine sealing according to claim 1 is characterized in that: described positioned internal cover (6) is interference fit with bent axle (3).
3. crankshaft of diesel engine sealing according to claim 1, it is characterized in that: described skeleton (5) is fixed on by outside setting sleeve (4) on the seal mounting hole of diesel-engine body (1) or gear chamber (9), and described outside setting sleeve (4) is an interference fit with seal mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202333409U CN201334964Y (en) | 2008-12-30 | 2008-12-30 | Diesel engine crankshaft oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202333409U CN201334964Y (en) | 2008-12-30 | 2008-12-30 | Diesel engine crankshaft oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334964Y true CN201334964Y (en) | 2009-10-28 |
Family
ID=41286613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202333409U Expired - Lifetime CN201334964Y (en) | 2008-12-30 | 2008-12-30 | Diesel engine crankshaft oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334964Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670783A (en) * | 2012-09-17 | 2014-03-26 | 广西玉柴机器股份有限公司 | Front oil seal carrier for diesel engines |
| 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 |
| CN105736705A (en) * | 2016-05-05 | 2016-07-06 | 青岛开世密封工业有限公司 | High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal |
-
2008
- 2008-12-30 CN CNU2008202333409U patent/CN201334964Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670783A (en) * | 2012-09-17 | 2014-03-26 | 广西玉柴机器股份有限公司 | Front oil seal carrier for diesel engines |
| 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 |
| CN105736705A (en) * | 2016-05-05 | 2016-07-06 | 青岛开世密封工业有限公司 | High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091028 |