CN201747422U - Circulating lubrication oil pump - Google Patents
Circulating lubrication oil pump Download PDFInfo
- Publication number
- CN201747422U CN201747422U CN2010202960949U CN201020296094U CN201747422U CN 201747422 U CN201747422 U CN 201747422U CN 2010202960949 U CN2010202960949 U CN 2010202960949U CN 201020296094 U CN201020296094 U CN 201020296094U CN 201747422 U CN201747422 U CN 201747422U
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- CN
- China
- Prior art keywords
- oil
- pump
- shaft
- oilhole
- gear
- 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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Abstract
The utility model relates to an oil pump, especially a circulating lubrication oil pump provided with an oil-returning channel. The circulating lubrication oil pump includes a pump body, a drive gear, a driving gear, a driving shaft, a driven gear, a driven shaft and a pump cover. The circulating lubrication oil pump is characterized in that the oil pump is provided with two lubricating oil channels for self lubrication, one is a drive gear lubricating oil channel, oil holes are axially and radially drilled in the driving shaft and are mutually communicated, the pump body is also provided with an oil hole which is communicated to the axial oil inlet hole in the driving shaft, the oil outlet hole is arranged at the front end of the pump body, the hole mouth faces to the tooth part of the drive gear; the other is a driven gear lubricating oil channel, the driven gear is radially provided with an oil hole, oil holes are also axially and radially drilled in the driven shaft and are mutually communicated, the outer diameter shaft hole of the driven shaft is provided with a ring groove, the shaft hole in the end surface of the driven shaft is communicated to the oil hole inlet of the oil pump forming into the circulating lubrication channels. Therefore, the problem of the self-lubrication of the oil pump is effectively solved, and the unnecessary failure of the oil pump is reduced, meanwhile, the shaft holding failure is prevented.
Description
Technical field
The utility model relates to oil pump, particularly a kind of circulating lubrication oil pump that the oil return oil duct is arranged.
Background technique
In the prior art, the principle of oil pump fuel feeding is to rotate the oil suction of finishing oil pump by the gear of a pair of cooperation or inner and outer rotors basically, press oily process, machine oil is sent into engine lubrication system, and the axle of oil pump self, the lubrication problem of rotating components such as gear then often is left in the basket, think that these rotating components work by mistake in oil, good lubricating condition is arranged, the problem that insufficient lubrication can not occur, but facts have proved, a lot of faults of oil pump all come from the lubrication problem of these rotating components: lubricated as driving shaft and the pump housing or pump cover supporting place, lubricated or the like between driven gear and the driven shaft.Oil pump driving gear fuses with driving shaft, and its friction position occurs in the place, hole that both ends of main drive shaft matches with the pump housing, pump cover, and its lubricating system is to have adopted the structure of opening oil groove on the pump housing, pump cover usually; Driven gear then rotates on driven shaft owing to it, what therefore will solve is lubricating between hole and the axle, the common practice is to make oil outlet on gear, and when gear was rotating, high pressure oil entered gear hole from oilhole and is lubricated, though this structure can play lubrication, but, promptly there is not the oil return oil duct, when powder that occurs when rubbing and impurity are trapped in rotation place owing to enter the not outlet of lubricant oil of oilhole, cause scuffing easily, thereby cause the generation of seize fault this place.
The model utility content
The purpose of this utility model is at above-mentioned defective, and a kind of circulating lubrication oil pump that the oil return oil duct is arranged is provided.
The technical solution of the utility model is the circulating lubrication oil pump, comprise the pump housing, driving gear, driving gear and driving shaft, driven gear and driven shaft, pump cover, it is characterized in that described oil pump self-lubrication is provided with two oil leabs: one is the driving gear oil leab, and one is the driven gear oil leab; Described driving gear oil leab be driving shaft axially with radially be drilled with oilhole and communicate, also being drilled with oilhole on the pump housing communicates with driving shaft axial fuel inlet hole, oil outlet is arranged on pump housing front end, and the oilhole spout is over against toothed drive gear portion, and this oil outlet communicates with driving shaft axial fuel inlet hole; Described driven gear oil leab is radially to be drilled with oilhole on driven gear, on driven shaft axially with radially all be drilled with oilhole and communicate, driven shaft axle external diameter axis hole place is shaped on annular groove, and the axis hole at driven shaft axial end position communicates with the oil inlet hole of oil pump, constitutes the lubrication oil circulation oil duct.
On the described driven shaft pressure-limit valve is installed, this pressure-limit valve is the steel ball type pressure-limit valve, and the steel ball on it props up driven shaft hollow oilhole oral area, and the oil inlet hole on the driven shaft communicates with axle hollow oilhole.
The utility model has the advantages that owing in oil pump, be provided with the circulating lubrication oil duct, preferably resolve oil pump self-lubrication problem, reduced many unnecessary faults in the oil pump.
Description of drawings
Fig. 1 is a driving gear oil leab structural representation of the present utility model.
Fig. 2 is oilhole distributed architecture figure in the driven gear.
Fig. 3 is a driven gear oil leab structural representation.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, the 1-pump housing, 2-driving shaft, 3-driving gear, 4-driving gear, 5-oil outlet, 6-driven shaft, 7-driven gear, 8-driven shaft oil inlet hole, 9-pressure-limit valve.As shown in Figure 1, show the oil leab structure of article one driving gear 4 of oil pump self-lubrication oil duct: respectively driving shaft 2 axially and radial bore, and it is communicated; Be drilled with oilhole and communicate with the axial fuel inlet hole of driving shaft 2 on the pump housing 1, oil outlet 5 is arranged on the front end of the pump housing 1, and the oilhole spout of oil outlet 5 is over against the tooth portion of driving gear 4, and oil outlet 5 communicates with driving shaft 2 axial fuel inlet holes.The second of oil pump self-lubrication oil duct is driven gear 7 oil leabs, shown in Fig. 2, Fig. 3, radially is drilled with oilhole on driven gear 7, as demonstrating 3 uniform structures of oilhole among the figure; As shown in Figure 3, on driven shaft 6 axially with radially also all be drilled with oilhole and communicate, the place is shaped on annular groove at 6 external diameter axis holes of driven shaft, the oilhole at driven shaft 6 axial end positions communicates with the oil inlet hole of oil pump, oil inlet hole 8 on the driven shaft 6 communicates with axial oilhole, more than two oil ducts constitute the self-lubrication oil circulation oil ducts of oil pump.As shown in Figure 3, pressure-limit valve 9 is installed on driven shaft 6, this pressure-limit valve 9 is steel ball type pressure-limit valves, and as seen from the figure, the steel ball on the pressure-limit valve props up driven shaft 6 hollow oilhole oral areas.
The oil leab of driving gear 4, see Fig. 1, be exactly respectively driving shaft 2 axially and radial bore it is communicated, communicate at the oilhole of holing on the pump housing 1 with on the driving shaft 2, oil outlet 5 is located at the diagram place, and during oil pump work, the high pressure oil that himself produces enters from driving shaft 2 oil inlet holes, from 5 ejections of the pump housing 1 oil outlet, the tooth portion that directly oil is sprayed on driving gear 4 is lubricated by runner.
The driven gear oil leab, see Fig. 2, Fig. 3, design the oil return oil duct, axially and radially make oil outlet and communicate at driven shaft 6, an axle external diameter axis hole place is shaped on annular groove, and the axis hole at axial end position communicates with the oil pump oil inlet hole during assembling, when oil pump is worked, high pressure oil enters the gear axis hole from three oilholes on the driven gear 7 and is lubricated, and the oilhole by axle flows back to low pressure area again, forms lubrication oil circulation.Pressure-limit valve among Fig. 3 plays pressure stabilization function to the input pressure of oil pump therein, to guarantee the stable working of pump.
Claims (2)
1. circulating lubrication oil pump, comprise the pump housing, driving gear, driving gear and driving shaft, driven gear and driven shaft, pump cover, it is characterized in that described oil pump self-lubrication is provided with two oil leabs: one is the driving gear oil leab, and one is the driven gear oil leab; Described driving gear oil leab be driving shaft axially with radially be drilled with oilhole and communicate, also being drilled with oilhole on the pump housing communicates with driving shaft axial fuel inlet hole, oil outlet is arranged on pump housing front end, and the oilhole spout is over against toothed drive gear portion, and this oil outlet communicates with driving shaft axial fuel inlet hole; Described driven gear oil leab is radially to be drilled with oilhole on driven gear, on driven shaft axially with radially all be drilled with oilhole and communicate, driven shaft axle external diameter axis hole place is shaped on annular groove, and the axis hole at driven shaft axial end position communicates with the oil inlet hole of oil pump, constitutes the lubrication oil circulation oil duct.
2. by the described circulating lubrication oil pump of claim 1, it is characterized in that on the described driven shaft pressure-limit valve being installed, this pressure-limit valve is the steel ball type pressure-limit valve, and the steel ball on it props up driven shaft hollow oilhole oral area, and the oil inlet hole on the driven shaft communicates with axle hollow oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202960949U CN201747422U (en) | 2010-08-16 | 2010-08-16 | Circulating lubrication oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202960949U CN201747422U (en) | 2010-08-16 | 2010-08-16 | Circulating lubrication oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747422U true CN201747422U (en) | 2011-02-16 |
Family
ID=43582105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202960949U Expired - Fee Related CN201747422U (en) | 2010-08-16 | 2010-08-16 | Circulating lubrication oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997022A (en) * | 2012-11-23 | 2013-03-27 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil pump |
| CN109268664A (en) * | 2018-11-29 | 2019-01-25 | 湖南机油泵股份有限公司 | A kind of pair of bushing carries out the gear type oil pump of circulation lubrication |
-
2010
- 2010-08-16 CN CN2010202960949U patent/CN201747422U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997022A (en) * | 2012-11-23 | 2013-03-27 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil pump |
| CN102997022B (en) * | 2012-11-23 | 2015-06-10 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil pump |
| CN109268664A (en) * | 2018-11-29 | 2019-01-25 | 湖南机油泵股份有限公司 | A kind of pair of bushing carries out the gear type oil pump of circulation lubrication |
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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 |
Granted publication date: 20110216 Termination date: 20150816 |
|
| EXPY | Termination of patent right or utility model |