CN2929257Y - Internal cycloidal rotor type machine oil pump - Google Patents
Internal cycloidal rotor type machine oil pump Download PDFInfo
- Publication number
- CN2929257Y CN2929257Y CN 200620075345 CN200620075345U CN2929257Y CN 2929257 Y CN2929257 Y CN 2929257Y CN 200620075345 CN200620075345 CN 200620075345 CN 200620075345 U CN200620075345 U CN 200620075345U CN 2929257 Y CN2929257 Y CN 2929257Y
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- CN
- China
- Prior art keywords
- pump
- oil
- oil pump
- cover
- pump cover
- 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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Abstract
This utility model relates to a hypocycloid rotor-type engine oil pump, comprising a pump body, a pump cover and a seal between the pump body and the pump cover, characterized in that the seal employs an O-shaped seal ring, the thickness of the pump body is attenuated while the thickness of the pump cover is thickened, the two are bolt fastened, an engine oil pump shaft support hole is arranged on the inboard of the pump cover. To guarantee oil supply of the oil-feed tank, the dimension of the pump body oil-feed tank is enlarged. The seal surface of the pump body is provided with the O-shaped seal ring locating slot.
Description
Technical field
The utility model relates to diesel engine oil pump, particularly a kind of hypocycloid rotor-type oil pump.
Background technique
Existing S195, S1110 diesel engine oil pump, a kind of is paper washer sealed type oil pump in the middle of the pump housing, the pump cover dual-supporting axis hole, another kind is the pump housing, pump cover, O RunddichtringO type pump housing list support shaft holes structure, there is structural quality problem in these two kinds of form oil pump, preceding a kind of dual-supporting axis hole structure, its defective is a poor sealing performance, oil leakage phenomenon appears when easily causing oil pump work, this is Diesel Engine Complete Machine three leakages: leakage of oil, the quality examination important indicator of leaking, leak gas have a strong impact on the Diesel Engine Complete Machine quality.The latter is the pump housing, pump cover, O RunddichtringO type pump housing list support shaft holes structure, though solved oil pump leakage of oil quality problems, but prolongation along with service time, the serious eccentric wear of oil pump zone of high pressure internal rotor appears, the pump cover premature wear, support shaft holes premature wear pump shaft aperture increases, pump shaft hole oil impregnate is serious, cause oil pump engine oil pressure deficiency, working flow to reduce, do not reach declared working condition, cause crankshaft of diesel engine, connecting rod bearing shell to sting the vara cylinder because of insufficient lubrication causes, even Diesel Engine Complete Machine scraps, have a strong impact on the Diesel Engine Complete Machine quality.
Summary of the invention
The purpose of this utility model provides a kind of hypocycloid rotor-type oil pump, increases to solve the leakage of oil of above-mentioned existing diesel oil pump, early stage eccentric wear and pump shaft hole premature wear axis hole, causes fuel delivery deficiency, pressure loss problem.
The purpose of this utility model is achieved in that a kind of hypocycloid rotor-type oil pump, comprise that the pump housing, pump cover are provided with sealing between reaching, it is characterized in that said sealing employing O RunddichtringO, pump housing reduced thickness, the corresponding thickening of pump cover thickness, bolt connects between the two, and the pump cover inboard is provided with oil pump pump shaft bearing hole.For guaranteeing the oil-feed tank fuel delivery, pump housing oil-feed tank size strengthens.The sealing surface of the pump housing is provided with O RunddichtringO locating slot.
Advantage of the present utility model and effect: (1) pump housing reduces 3mm thickness, reserves 3mm space thickening pump cover thickness, has improved the pump cover shock strength, avoids because the too thin vibrations cracking of pump cover wall thickness; On pump cover, increase the pump shaft bearing hole, become the pump housing, pump cover double supporting structure, inside oil return and the leakage of pump housing axis hole premature wear of having avoided pump cover serious eccentric wear in single support structure oil pump zone of high pressure to cause seriously cause fuel delivery minimizing under the oil pump declared working condition, the charge oil pressure deficiency, avoid crankshaft of diesel engine, connecting rod bearing shell to sting vara cylinder phenomenon because of insufficient lubrication causes, improved Diesel Engine Complete Machine quality and complete machine functional reliability.(2) attenuate of pump housing thickness reduces the pump housing oil-feed tank degree of depth, influences fuel delivery.Reduce problem for solving the oil-feed tank fuel delivery, oil-feed tank has been done processing improved, size h changes 9mm into by original 7mm, has guaranteed the oil-feed tank fuel delivery.(3) between the pump housing and pump cover, seal, replace existing paper washer sealing with mechanical O RunddichtringO.Because the paper washer sealing compensation is not enough, the easy seepage of oil pump efficiently solves an oil pump oil impregnate difficult problem.(4) oil pump has realized oil pump ne-leakage, stable, reliable, the long service life of working pressure under the constant situation of Diesel Engine Complete Machine space fitted position.
Description of drawings
Figure 1A, B are embodiments of the present utility model (S1110 oil pump);
Fig. 2 A, B are another embodiment of the present utility model (S195 oil pump).
Embodiment
Referring to Fig. 1, Fig. 2, mechanical O RunddichtringO 2 is set in the middle of the pump housing 1 and pump cover 3 junction planes, can play the favorable mechanical seal action with the bolt 4 locking pump housings 1 and pump cover 3.In the pump housing 1 reduced thickness, the corresponding thickening of pump cover 3 thickness also increases oil pump pump shaft bearing hole 5 in the inboard, change pump housing pump cover dual-supporting into by original pump housing list supporting, having solved zone of high pressure pump cover eccentric wear and pump housing axis hole premature wear causes pump housing axis hole to leak seriously, fuel delivery occurring reduces, underpressure causes crankshaft of diesel engine, connecting rod bearing shell to sting vara cylinder phenomenon because of insufficient lubrication causes, and has improved Diesel Engine Complete Machine quality and complete machine functional reliability.
Claims (3)
1, a kind of hypocycloid rotor-type oil pump comprises that the pump housing, pump cover are provided with sealing between reaching, and it is characterized in that said sealing employing O RunddichtringO, pump housing reduced thickness, the corresponding thickening of pump cover thickness, and the pump cover inboard is provided with oil pump pump shaft bearing hole.
2, hypocycloid rotor-type oil pump according to claim 1 is characterized in that pump housing oil-feed tank strengthens.
3, hypocycloid rotor-type oil pump according to claim 1 and 2 is characterized in that the sealing surface of the pump housing is provided with O RunddichtringO locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075345 CN2929257Y (en) | 2006-07-25 | 2006-07-25 | Internal cycloidal rotor type machine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075345 CN2929257Y (en) | 2006-07-25 | 2006-07-25 | Internal cycloidal rotor type machine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929257Y true CN2929257Y (en) | 2007-08-01 |
Family
ID=38307640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620075345 Expired - Lifetime CN2929257Y (en) | 2006-07-25 | 2006-07-25 | Internal cycloidal rotor type machine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929257Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953980A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump assembly |
| CN106014965A (en) * | 2016-07-20 | 2016-10-12 | 常州市恒泰源盛减速机配件厂 | Oil pump steady in structure |
-
2006
- 2006-07-25 CN CN 200620075345 patent/CN2929257Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953980A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump assembly |
| CN106014965A (en) * | 2016-07-20 | 2016-10-12 | 常州市恒泰源盛减速机配件厂 | Oil pump steady in structure |
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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 |
Granted publication date: 20070801 |
|
| EXPY | Termination of patent right or utility model |