CN202274272U - Positioning structure for oil pump of engine - Google Patents
Positioning structure for oil pump of engine Download PDFInfo
- Publication number
- CN202274272U CN202274272U CN2011204098208U CN201120409820U CN202274272U CN 202274272 U CN202274272 U CN 202274272U CN 2011204098208 U CN2011204098208 U CN 2011204098208U CN 201120409820 U CN201120409820 U CN 201120409820U CN 202274272 U CN202274272 U CN 202274272U
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- China
- Prior art keywords
- oil pump
- pump body
- shaft
- concentric
- gear
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- Expired - Fee Related
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- Rotary Pumps (AREA)
Abstract
The utility model discloses a positioning structure for an oil pump of an engine. An oil pump body (1) is supported on a right crankcase (6) through a circular boss (1a) on the right side, a left shaft neck (3b) of an oil pump shaft (3) is supported on a left crankcase (7), a supporting hole (1b) is arranged in the oil pump body (1) and concentric with the circular boss (1a) on the right side, and a right shaft neck (3a) of the oil pump shaft (3) is supported in the supporting hole (1b) of the oil pump body (1). Furthermore, a cylindrical concave spigot (1c) concentric with the circular boss (1a) is arranged on the left end face of the oil pump body (1), and a circular convex spigot (2b) corresponding to the cylindrical concave spigot (1c) is arranged on an oil pump cover (2). The positioning structure for the oil pump of the engine reduces processing difficulty of the oil pump body and the oil pump cover, improves position accuracy of an oil pump gear, and solves problems of gear screaming and gear noise caused by low mesh accuracy of the gear.
Description
Technical field
The utility model belongs to technical field of engines, specifically, is a kind of position structure of engine oil pump.
Background technique
Engine oil pump position structure as shown in Figure 1, its oil pump is made up of oil pump body 1, oil pump cover 2, machine oil pump shaft 3, internal rotor 4, external rotor 5, stop pin 8, locating stud 10.Internal rotor 4, external rotor 5 are installed in the oil pump body 1, and the right side of oil pump body 1 is provided with round boss 1a, and oil pump body 1 is bearing on the right crankcase 6 through round boss 1a.The left axle journal 3b of machine oil pump shaft 3 is bearing on the left crankcase 7, and the right axle journal 3a of machine oil pump shaft 3 is bearing among the endoporus 2a of oil pump cover 2.Internal rotor 4 is sleeved on the right axle journal 3a of machine oil pump shaft 3, and machine oil pump shaft 3 passes through stop pin 8 axial restraints with internal rotor 4, and external rotor 5 is fitted with the endoporus of oil pump body 1.Oil pump is fastened on the right crankcase 6 by three screws 9.Oil pump gear 11 is fixedly mounted on the left end of machine oil pump shaft 3.
The very corn of a subject is: the right axle journal 3a of machine oil pump shaft 3 and the supporting of left diameter of axle 3b must be with one heart; The endoporus 2a of the endoporus 2a → oil pump cover 2 of right axle journal 3a through being bearing in oil pump cover 2 and the round boss 1a on oil pump body 1 right side be concentric → and the round boss 1a of oil pump body 1 is bearing on the right crankcase 6; Thereby false bearing is on right crankcase 6, and left diameter of axle 3b directly is bearing on the left crankcase 7.Therefore; The round boss 1a on oil pump body 1 right side and the endoporus 2a of oil pump cover 2 must be concentric; Could guarantee the centering problem of machine oil pump shaft 3; Promptly solve the accuracy of mesh of the oil pump gear 11 of machine oil pump shaft 3 left ends, avoid uttering long and high-pitched sounds and the gear noiose problem because of the low gear that produces of gear engagement precision.This concentric problem is guaranteed by corresponding two pairs of positioning pin holes and two locating studs 6 that are provided with on oil pump body 1 and the oil pump cover 2; The difficulty of processing of corresponding two pairs of positioning pin holes is high on oil pump body 1 and the oil pump cover 2; Guarantee the machining accuracy of two pairs of positioning pin holes; Must dispose machining center and the higher special plane of precision, machining center costs an arm and a leg, and high-precision special plane price is not low yet.
The model utility content
The purpose of the utility model provides the low engine oil pump position structure of a kind of difficulty of processing; Need not adopt machining center and highi degree of accuracy special plane just can solve the centering problem of oil pump; Promptly solve the accuracy of mesh problem of oil pump gear, avoid uttering long and high-pitched sounds and the gear noiose problem because of the low gear that produces of gear engagement precision.
For this reason; The technological scheme that the utility model adopted is: a kind of engine oil pump position structure; Comprise oil pump body (1), oil pump cover (2), machine oil pump shaft (3) and be installed in internal rotor (4) and the external rotor (5) in the oil pump body (1); Said oil pump body (1) is bearing on the right crankcase (6) through the round boss (1a) on right side; The left axle journal (3b) of said machine oil pump shaft (3) is bearing on the left crankcase (7); Said internal rotor (4) is sleeved on the right axle journal (3a) of machine oil pump shaft (3), and machine oil pump shaft (3) and internal rotor (4) be through stop pin (8) axial restraint, and key is: be provided with support holes (1b) in the said oil pump body (1); This support holes (1b) is concentric with round boss (1a), and the right axle journal (3a) of said machine oil pump shaft (3) is bearing in the support holes (1b) of oil pump body (1).
Two locating studs in this structure cancellation background technique; And corresponding two pairs of positioning pin holes on the oil pump body, oil pump cover; And in oil pump body, set up a support holes that is used to support the right axle journal of machine oil pump shaft; This support holes is concentric with the round boss on oil pump body right side, is equivalent to the right axle of machine oil pump shaft
NeckBe bearing on the right crankcase, thereby guaranteed the centering problem of oil pump.
The left side of the said engine oil pump housing (1) is provided with cylindrical recessed seam (1c); This cylindrical recessed seam (1c) is concentric with round boss (1a); Said oil pump cover (2) is provided with the circular male half coupling (2b) corresponding with cylindrical recessed seam (1c), and this circle male half coupling (2b) is concentric with the endoporus (2a) of oil pump cover (2).Round boss and circular groove constitute fixing structure, have guaranteed that the round boss of oil pump body is concentric with the endoporus of oil pump cover, and oil pump cover plays the intermediate support effect of machine oil pump shaft, have guaranteed that simultaneously the inside and outside rotor in the oil pump body goes slick.
Add man-hour; Only need to guarantee that the support holes of oil pump body is concentric with round boss with concentric, the cylindrical recessed seam of round boss; The circular male half coupling of oil pump cover gets final product with endoporus is concentric; Reduced greatly oil pump body with the difficulty of processing of oil pump cover, reduced processing cost, and reduced number of spare parts, simplified installation; Simultaneously,
GuaranteedThe internal rotor and the external rotor that are installed in the oil pump body go slick, and have improved the positional accuracy of oil pump gear, have guaranteed this gear meshing precision, avoid uttering long and high-pitched sounds and the gear noiose problem because of the low gear that produces of gear engagement precision.
Description of drawings
Fig. 1 is the schematic representation of the engine oil pump position structure before improving.
Fig. 2 is the schematic representation of the engine oil pump position structure after improving.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
As shown in Figure 2, engine oil pump is made up of oil pump body 1, oil pump cover 2, machine oil pump shaft 3, internal rotor 4, external rotor 5, stop pin 8.The engine oil pump position structure is made up of oil pump, right crankcase 6, left crankcase 7, screw 9, oil pump gear 11 etc.Internal rotor 4 is installed in the oil pump body 1 with external rotor 5, and the right side of oil pump body 1 is provided with round boss 1a, and oil pump body 1 is bearing on the right crankcase 6 through round boss 1a.
Be provided with support holes 1b in the oil pump body 1, this support holes 1b is concentric with right side round boss 1a, the right axle journal 3 of machine oil pump shaft 3
aBe bearing in the support holes 1b of oil pump body 1, as the right side supporting of machine oil pump shaft 3; The left axle journal 3b of machine oil pump shaft 3 is bearing on the left crankcase 7, as the left side supporting of machine oil pump shaft 3.
In addition; The left side of oil pump body 1 is provided with cylindrical recessed seam 1c; This cylindrical recessed seam 1c is concentric with round boss 1a, and oil pump cover 2 is provided with the circular male half coupling 2b corresponding with cylindrical recessed seam 1c, and cylindrical recessed seam 1c and circular male half coupling 2b constitute the seam adjective-centre structure.The right axle journal 3a of machine oil pump shaft 3 is bearing among the endoporus 2a of oil pump cover 2, as the intermediate support of machine oil pump shaft 3; Internal rotor 4 is sleeved on the right axle journal 3a of machine oil pump shaft 3, and between the intermediate support and right supporting of machine oil pump shaft 3, machine oil pump shaft 3 passes through stop pin 8 axial restraints with internal rotor 4, and external rotor 5 is fitted with the endoporus of oil pump body 1.Oil pump is fastened on the right crankcase 6 by three screws 9, and oil pump gear 11 is fixedly mounted on the left end of machine oil pump shaft 3.
Claims (2)
1. engine oil pump position structure; Comprise oil pump body (1), oil pump cover (2), machine oil pump shaft (3) and be installed in internal rotor (4) and the external rotor (5) in the oil pump body (1); Said oil pump body (1) is bearing on the right crankcase (6) through the round boss (1a) on right side; The left axle journal (3b) of said machine oil pump shaft (3) is bearing on the left crankcase (7); Said internal rotor (4) is sleeved on the right axle journal (3a) of machine oil pump shaft (3), and machine oil pump shaft (3) and internal rotor (4) is characterized in that: be provided with support holes (1b) in the said oil pump body (1) through stop pin (8) axial restraint; This support holes (1b) is concentric with round boss (1a), the right axle journal (3 of said machine oil pump shaft (3)
a) be bearing in the support holes (1b) of oil pump body (1).
2. according to the described engine oil pump position structure of claim 1; It is characterized in that: the left side of said oil pump body (1) is provided with cylindrical recessed seam (1c); This cylindrical recessed seam (1c) is concentric with round boss (1a); Said oil pump cover (2) is provided with the circular, cylindrical projection seam (2b) corresponding with cylindrical recessed seam (1c), and this circle male half coupling (2b) is concentric with the endoporus (2a) of oil pump cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204098208U CN202274272U (en) | 2011-10-25 | 2011-10-25 | Positioning structure for oil pump of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204098208U CN202274272U (en) | 2011-10-25 | 2011-10-25 | Positioning structure for oil pump of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202274272U true CN202274272U (en) | 2012-06-13 |
Family
ID=46194633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204098208U Expired - Fee Related CN202274272U (en) | 2011-10-25 | 2011-10-25 | Positioning structure for oil pump of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202274272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748575A (en) * | 2012-07-03 | 2012-10-24 | 中国南方航空工业(集团)有限公司 | Lubricating oil pump drive device |
-
2011
- 2011-10-25 CN CN2011204098208U patent/CN202274272U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748575A (en) * | 2012-07-03 | 2012-10-24 | 中国南方航空工业(集团)有限公司 | Lubricating oil pump drive device |
| CN102748575B (en) * | 2012-07-03 | 2016-01-06 | 中国南方航空工业(集团)有限公司 | Lubricating oil pump transmission device |
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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: 20120613 Termination date: 20191025 |