CN201679579U - Sealing structure of the front end of diesel engine crankshaft - Google Patents
Sealing structure of the front end of diesel engine crankshaft Download PDFInfo
- Publication number
- CN201679579U CN201679579U CN2009202881200U CN200920288120U CN201679579U CN 201679579 U CN201679579 U CN 201679579U CN 2009202881200 U CN2009202881200 U CN 2009202881200U CN 200920288120 U CN200920288120 U CN 200920288120U CN 201679579 U CN201679579 U CN 201679579U
- Authority
- CN
- China
- Prior art keywords
- oil
- sealing cover
- crankcase
- oil groove
- crankcase wall
- 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)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a sealing structure of the front end of a diesel engine crankshaft. The sealing structure includes a crankcase wall, a rotary shaft is arranged in the bore of the crankcase wall, a sealing cover is disposed between the rotary shaft and the crankcase wall, the side wall of the bore of the sealing cover is provided with oil grooves. The sealing structure is characterized in that one end of the bore of the sealing cover, which is close to the inner side of the crankcase wall, is provided with a deep & wide oil groove the lower parts of the deep & wide oil groove and the oil grooves are communicated with an oil return hole which is axially arranged, and the oil return hole is communicated with the inner side of the crankcase wall. When crankshaft is running, the splashed oil enters into the deep & wide oil groove at first and then returns to the crankcase via the oil return hole, the oil quantity entering into the oil grooves can be greatly reduced; both sides of the communication part of the lower part of the oil grooves and the oil return hole are provided with slopes, which enable the oil in the oil grooves to smoothly enter into the oil return hole and return to the crankcase; the most external sealing ring takes an effect of further anti-leakage. Therefore, the sealing structure has the advantages of good sealing effect and being free of oil leakage.
Description
Technical field
The utility model relates to a kind of sealing configuration, particularly a kind of crankshaft of diesel engine forward end seal structure.
Background technique
The front end of crankshaft of diesel engine also claims free end need carry out power output, so this end of bent axle need stretch out the crankcase body outside.In order to prevent the machine oil that splashes in the crankcase, and flow to lubricating oil leakage on the axle journal outside crankcase, must be provided with sealing cover at the front end of crankshaft of diesel engine.Sealing cover is at the endoporus place of crankcase wall and be sleeved on outside the turning axle, is processed with oil groove on the endoporus sidewall of sealing cover, is communicated with spill port near the oil groove of outside.The seal arrangement sealing effect of this structure is bad, always has oil leakage phenomenon to take place.Because crankcase pressure is greater than the outer atmospheric pressure of case, when crankshaft rotating, the machine oil that reaches in the crankcase attached to the bent axle surface flows to crankshaft end.At free end, machine oil can overflow whole oil groove, spills into the crankcase outside along the gap between sealing cover and the turning axle, causes leakage of oil.
Summary of the invention
The purpose of this utility model provides the crankshaft of diesel engine forward end seal structure that a kind of good sealing effect, crankshaft front end do not have the draining phenomenon, overcomes the deficiencies in the prior art.
Crankshaft of diesel engine forward end seal structure of the present utility model, comprise crankcase wall, there is turning axle at crankcase wall endoporus place, between turning axle and crankcase wall, sealing cover is arranged, on the endoporus sidewall of sealing cover, be processed with first oil groove, it is characterized in that: the endoporus of described sealing cover has second oil groove near inboard one end of crankcase wall, and the below of second oil groove and first oil groove is communicated with the spill port of axial setting, and spill port is connected with the inboard of crankcase wall.
Crankshaft of diesel engine forward end seal structure of the present utility model, the below bottom land of wherein said first oil groove be connected with spill port the place both sides the slope is arranged.
The outside one end that crankshaft of diesel engine forward end seal structure of the present utility model, the endoporus of wherein said sealing cover are positioned at crankcase wall has seal ring, and the outside of seal ring has baffle plate to fixedly connected with sealing cover.
Crankshaft of diesel engine forward end seal structure of the present utility model, wherein said seal ring are interior bag skeleton running shaft lip rubber seal circle.
Crankshaft of diesel engine forward end seal structure of the present utility model, because inboard one end at sealing cover endoporus place near crankcase wall has second oil groove that is communicated with spill port, the machine oil that splashes during work at first enters this groove and returns in the case by spill port, has significantly reduced the oil level that enters first oil groove; Because first oil groove below is communicated with the both sides, place with spill port the slope is arranged, the very well spill port that enters of machine oil that enters in first oil groove is returned in the case; Outermost seal ring has played further anti-leak effect; So this sealing configuration has the advantage of good sealing effect, no oil leakage phenomenon.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of sealing cover shown in Figure 1;
Fig. 3 is the perspective view of sealing cover.
Embodiment
As shown in Figure 1, 2, 3: 8 is crankcase wall, and there is turning axle 7 at crankcase wall 8 endoporus places, between turning axle 7 and crankcase wall 8 sealing cover 1 are arranged, and is processed with three first oil grooves 2 on the endoporus sidewall of sealing cover 1.
The below that the endoporus of sealing cover 1 is processed with second oil groove, 3, the second oil grooves 3 and first oil groove 2 near inboard one end of crankcase wall 8 is communicated with the spill port 4 of axial setting, and spill port 4 is connected with the inboard of crankcase wall 8.There is slope 9 be connected with spill port 4 both sides at place of the below bottom land of first oil groove 2, guarantee that the machine oil enter in first oil groove 2 can enter in the spill port 4 smoothly.The outside one end that is positioned at crankcase wall 8 at the endoporus of sealing cover 1 has seal ring 5, and seal ring 5 is interior bag skeleton running shaft lip rubber seal circle.The outside of seal ring 5 has baffle plate 6 to be connected with sealing cover 1 screw.
The machine oil that splashes during work at first enters second oil groove 3 and returns in the case by spill port 4, has significantly reduced the oil level that enters first oil groove 2; Because first oil groove, 2 belows are communicated with the both sides, place with spill port 4 slope 9 is arranged, the very well spill port 4 that enters of machine oil that enters in first oil groove is returned in the case; Outermost seal ring 5 has played further anti-leak effect.
Claims (4)
1. crankshaft of diesel engine forward end seal structure, comprise crankcase wall (8), there is turning axle (7) at crankcase wall (8) endoporus place, between turning axle (7) and crankcase wall (8), sealing cover (1) is arranged, on the endoporus sidewall of sealing cover (1), be processed with first oil groove (2), it is characterized in that: the endoporus of described sealing cover (1) has second oil groove (3) near inboard one end of crankcase wall (8), the below of second oil groove (3) and first oil groove (2) is communicated with the spill port (4) of axial setting, and spill port (4) is connected with the inboard of crankcase wall (8).
2. crankshaft of diesel engine forward end seal structure according to claim 1 is characterized in that: the below bottom land of described first oil groove (2) be connected with spill port (4) place both sides slope (9) is arranged.
3. crankshaft of diesel engine forward end seal structure according to claim 1 and 2, it is characterized in that: the outside one end that the endoporus of described sealing cover (1) is positioned at crankcase wall (8) has seal ring (5), and the outside of seal ring (5) has baffle plate (6) to fixedly connected with sealing cover (1).
4. crankshaft of diesel engine forward end seal structure according to claim 3 is characterized in that: described seal ring (5) is interior bag skeleton running shaft lip rubber seal circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202881200U CN201679579U (en) | 2009-12-15 | 2009-12-15 | Sealing structure of the front end of diesel engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202881200U CN201679579U (en) | 2009-12-15 | 2009-12-15 | Sealing structure of the front end of diesel engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679579U true CN201679579U (en) | 2010-12-22 |
Family
ID=43344625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202881200U Expired - Fee Related CN201679579U (en) | 2009-12-15 | 2009-12-15 | Sealing structure of the front end of diesel engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679579U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295402A (en) * | 2014-07-20 | 2015-01-21 | 中国北方发动机研究所(天津) | Crankshaft oil seal oil return structure suitable for internal combustion engine |
| CN104806659A (en) * | 2015-04-27 | 2015-07-29 | 无锡市神力齿轮冷挤有限公司 | Roller-type one-way clutch with dual-sealing structure |
| WO2021110353A1 (en) * | 2019-12-04 | 2021-06-10 | Siemens Energy Global GmbH & Co. KG | Shaft sealing ring, machine having such a shaft sealing ring and method for operating a machine |
-
2009
- 2009-12-15 CN CN2009202881200U patent/CN201679579U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295402A (en) * | 2014-07-20 | 2015-01-21 | 中国北方发动机研究所(天津) | Crankshaft oil seal oil return structure suitable for internal combustion engine |
| CN104806659A (en) * | 2015-04-27 | 2015-07-29 | 无锡市神力齿轮冷挤有限公司 | Roller-type one-way clutch with dual-sealing structure |
| WO2021110353A1 (en) * | 2019-12-04 | 2021-06-10 | Siemens Energy Global GmbH & Co. KG | Shaft sealing ring, machine having such a shaft sealing ring and method for operating a machine |
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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: 20101222 Termination date: 20161215 |