CN109373167A - A kind of lubricating oil pump of double oil road structures - Google Patents
A kind of lubricating oil pump of double oil road structures Download PDFInfo
- Publication number
- CN109373167A CN109373167A CN201811557443.5A CN201811557443A CN109373167A CN 109373167 A CN109373167 A CN 109373167A CN 201811557443 A CN201811557443 A CN 201811557443A CN 109373167 A CN109373167 A CN 109373167A
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- point
- rotor
- oil
- female surface
- oil pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a kind of lubricating oil pump of double oil road structures, are rotor-type oil pump.This lubricating oil pump is provided with two oil roads.Face shared by gap between internal rotor and the adjacent meshing point of outer rotor two is female surface.It first determines maximum female surface position and the meshing point at its both ends is successively determined as to a point and b point along rotor direction of rotation；The meshing point at female surface both ends is successively determined as c point and d point along rotor direction of rotation when the ratio of the area of the area of female surface and maximum female surface is identical to the ratio of the oil drain quantity and total oil drain quantity of the second oil road；It determines minimum female surface position and the meshing point at its both ends is successively determined as to f point and g point along rotor direction of rotation；The position of first oil road is between b point and c point, and the position of the second oil road is between d point and f point.Lubricating oil pump of the invention is provided with two oil roads, features simple structure, reliable performance, handling ease.The fuel-displaced ratio of two oil roads is arbitrarily set by the above method.
Description
Technical field
The invention belongs to flow rate of hydraulic system control technical field, specifically, being related to a kind of double oil road structures
Lubricating oil pump.
Background technique
Motorcycle and automobile engine oil pump fabricate industry, oil input channel and oil road in lubricating oil pump both at home and abroad at present
Structure type it is varied, but be substantially single channel, i.e. only one channel oil input channel and an oil road.To have
Multiple oil input channels and oil road, while providing the flow of each oil road, it is often necessary to it is designed as the combined type of multiple rotor sets
Lubricating oil pump；Each rotor set can have independent or common oil inlet passage, and oil drain passage is then independent.Combined type
Fuel pump structure is complicated, required precision is high, manufacture difficulty of processing is big, at high cost.Therefore, it is necessary to design a kind of structure letter
Just, the lubricating oil pump of the double oil channel structure of single-turn subgroup of the advantages that reliable performance, easy processing.
Summary of the invention
For deficiency above-mentioned in the prior art, the present invention provides a kind of lubricating oil pump of double oil road structures, this lubricating oil pump
An only group rotor group and two oil roads, and the fuel-displaced ratio of two oil roads can be set as needed.
In order to achieve the above object, the solution that the present invention uses is: a kind of lubricating oil pump of double oil road structures, described
Lubricating oil pump is rotor-type oil pump, and the lubricating oil pump includes the pump housing, internal rotor and outer rotor；The pump body, which is provided with, to be turned
Seed cell, the outer rotor are placed in the rotor chamber, and the internal rotor is placed in the outer rotor；The internal rotor and outer rotor
It is close to the rotor chamber end face；The pump housing is provided with oil input channel and oil road, the lubricating oil pump in the rotor chamber end face
There are two oil road, the position of the oil input channel of the lubricating oil pump and the positions of oil road to determine by the following method for setting:
Face shared by gap between internal rotor and the adjacent meshing point of outer rotor two is female surface, and the area of female surface is with described turn
Son rotation and change；The point of a selected outer rotor tooth profile the lowest point is M point, selectes an internal rotor tooth profile the lowest point
Point be N point；When M point, N point, internal rotor rotation center O1With the rotation center O of outer rotor2When collinear, between M point and N point
Female surface area it is maximum, the meshing point at the maximum female surface both ends is successively determined as a point and b along rotor direction of rotation
Point；
The area change situation for calculating female surface in rotor rotation process determines the area and maximum female surface of female surface
The ratio of area is identical to the position of the female surface when ratio of the oil drain quantity and total oil drain quantity of the second oil road；The containing
The meshing point at face both ends is successively determined as c point and d point along the direction that rotor rotates；
When M point rotates 180 °, i.e. M point rotates to for the first time and O1And O2When collinear, the engagement at female surface both ends where M point
Point is successively determined as f point and g point along the direction that rotor rotates；
By O1It puts line a point, b point, c point, d point, f point and g point respectively and extends to and internal rotor root circle and outer rotor
Root circle intersection；bO1、cO1, the position that encloses of internal rotor root circle and outer rotor root circle be the first oil road setting position
It sets；dO1、fO1, the position that encloses of internal rotor root circle and outer rotor root circle be the second oil road setting position；gO1、
aO1, the position that encloses of internal rotor root circle and outer rotor root circle be oil input channel setting position.
Further, the area change situation for calculating female surface in rotor rotation process, is inquired by mapping software
Tool is measured.
Further, the number of inner teeth of the lubricating oil pump is 10, and the outer teeth of the lubricating oil pump is 11, institute
State the rotation center O of the internal rotor of lubricating oil pump1With the rotation center O of outer rotor2An eccentric amount e apart is 1.89mm.
The beneficial effects of the present invention are: lubricating oil pump of the invention is traditional rotor-type oil pump, it is fuel-displaced provided with two
Road, features simple structure, reliable performance, handling ease.Meanwhile the position of two oil roads of lubricating oil pump of the invention is according to rotor
Female surface size variation situation in rotation process between internal rotor and outer rotor determines.That is, internal rotor and outer rotor rotate and lead to
After crossing two oil road positions, the area change size of the female surface between internal rotor and outer rotor is in equal proportions in two
The ratio of the respective oil pump capacity of a oil road.The position of two oil roads determined by this method can guarantee two oil roads
Fuel-displaced ratio.Since the female surface variation between internal rotor and outer rotor has continuity, we can be by this method
The arbitrarily fuel-displaced ratio of two oil roads of setting.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
The schematic diagram that Fig. 2 is female surface when being maximum female surface.
Fig. 3 is that the female surface between M point and N point is A0When schematic diagram.
The schematic diagram that Fig. 4 is female surface when being minimum female surface.
In attached drawing: 100, the pump housing；110, oil input channel；120, fuel feed hole；130, the first oil road；140, oil outlet；150,
Second oil road；200, outer rotor；300, internal rotor；400, transmission shaft.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described:
The present embodiment provides as Figure 1-Figure 4, a kind of lubricating oil pump of double oil road structures is common rotator type machine
Oil pump.This lubricating oil pump includes the pump housing 100, internal rotor 300, outer rotor 200 and transmission shaft 400；The pump housing 100, which is internally provided with, to be turned
Seed cell, rotor chamber are cylindrical cavity.Outer rotor 200 is placed in the rotor chamber.Outer rotor 200 is provided with internal tooth, number
Z2=11, internal rotor 300 is placed in outer rotor 200；Internal rotor 300 is provided with external tooth, number Z1=10, and interior turn
Son 300 and outer rotor 200 engage.The diameter and rotor chamber diameter of outer rotor 200 are suitable, and internal rotor 300 and outer rotor 200 accommodate
After rotor chamber, 200 side wall of outer rotor is close to rotor chamber side wall, i.e. outer rotor 200 and rotor chamber concentric O2；Meanwhile interior turn
Rotor chamber both ends of the surface are close on the two sides of son 300 and outer rotor 200.300 center of circle O of internal rotor1It is connected with transmission shaft 400, the biography
Moving axis 400 passes through the end face of rotor chamber and extends to outside the pump housing 100.300 center of circle O of internal rotor1In 200 center of circle O of outer rotor2It
Between an eccentric amount e apart be 1.89mm.300 tooth form of internal rotor is designed using short arc epicycloid equal space line, the sub- tooth form of unofficial biography
It is designed using three-arc modified line.When in running order, internal rotor 300 and each tooth of outer rotor 200 are in meshing state always,
And face shared by two gaps between adjacent meshing point is female surface.The common normal Heng Tong of internal rotor 300 and each meshing point of outer rotor 200
Cross node P.P point is pitch circle and O1、O2The intersection point of line, pitch radius R=Z1.e, the pitch circle center of circle is O1.The pump housing 100 is in rotor
One end face of room is provided with an oil input channel 110 and two oil roads, and oil input channel 110 and oil road respectively cover two rotor tooth roots
Position existing for each covering part female surface of area between circle, i.e. oil input channel 110 and oil road.The pump housing 100 is also set up
There are a fuel feed hole 120 and two oil outlets 140, fuel feed hole 120 connects oil input channel 110, the respectively connection one of two oil outlets 140
Oil road.
In use, transmission shaft 400 rotates under external world's driving, internal rotor 300 is driven to rotate, while outer rotor 200 also revolves
Turn, the angular velocity of rotation of inner and outer Rotator is inversely proportional than the transmission ratio with the two, i.e. φ1/φ2=Z2/Z1.Contain in rotary course
The area in face constantly changes.At this point, the area in partial tolerance face is gradually increased and forms negative pressure, referred to herein as oil input channel 110 is set
Seated position；Since negative pressure exists, machine oil constantly enters female surface herein from 120 suction passage of fuel feed hole and by oil input channel 110
It is interior.Meanwhile the area in partial tolerance face is gradually reduced, referred to herein as position is arranged in oil road；Machine oil is constantly squeezed out from female surface
And it is discharged by oil road and oil outlet 140.
Lubricating oil pump of the invention is that traditional rotor-type oil pump is provided with two oil roads, and features simple structure, performance can
It leans on, handling ease.
In order to make the fuel-displaced ratio of two oil roads meet preset ratio 7:13, i.e., the oil pump capacity of two oil roads is respectively
35% and 65%, the position of oil input channel 110 and two oil roads is determined with the following method.
The area of female surface between 200 liang of adjacent meshing points of rotor-type oil pump internal rotor 300 and outer rotor is with rotor
It rotates and changes.The point of a selected 200 tooth profile the lowest point of outer rotor is M point, selectes a 300 tooth profile paddy of internal rotor
The point at bottom is N point；Reference point when M point and N point are rotated as inner and outer Rotator by transmission ratio；When M point, N point, internal rotor 300
Rotation center O1With the rotation center O of outer rotor 2002When collinear, the area of the female surface between M point and N point is maximum, maximum packet
The meshing point at appearance face both ends is successively determined as a point and b point along rotor direction of rotation.
The maximum area Amax that female surface is calculated according to the setting parameter of lubricating oil pump will be accurately calculated between two adjacent meshing points
The specific value of containment area is very difficult, but can be used and draw 1 to 1 figure of engagement of inner and outer rotors 200, then pass through mapping software
Query facility is measured, i.e., is 48.85mm by the size that Amax is calculated in CAXA software2。
The area change situation for calculating female surface in rotor rotation process, determine between M point and N point the area of female surface with
The ratio of the area of maximum female surface is identical to the second oil road 150, oil drain quantity and total oil drain quantity ratio when the containing
The position in face；The meshing point at female surface both ends is successively determined as c point and d point along the direction that rotor rotates between M point and N point.
As containment area A between two meshing points between M point and N point0For 31.8mm2When, 31.8mm2With 48.85mm2Ratio
Be approximately equal to 0.65, according to CAXA software be calculated 300 rotational angle of internal rotor be 77 ° when, outer rotor 200 rotate angle be
70°.That is when N point rotational angle is 77 °, it is 70 ° that M point, which rotates angle,.At this point, the engagement at the female surface both ends between M point and N point
Point is successively determined as c point and d point along the direction that rotor rotates.
It is 198 ° when internal rotor 300 rotates angle, when M point rotates 180 °, i.e. when N point rotational angle is 198 °, the rotation of M point
When angle is 180 °, M point rotates to for the first time and O1And O2Collinear, the meshing point at the female surface both ends where M point is along rotor at this time
The direction of rotation is successively determined as f point and g point.At this point, containment area Amin is 0.76mm between two adjacent meshing points2。
By O1It puts line a point, b point, c point, d point, f point and g point respectively and extends to and inside and outside moon dental floss Ro1And Ro2Intersection,
Clipped formation oil input channel and two oil expulsion channels.Interior moon dental floss Ro1For the root circle of internal rotor, outer moon dental floss Ro2For the tooth of outer rotor
Root circle.bO1、cO1, the position that encloses of internal rotor root circle and outer rotor root circle be the first oil road setting position；dO1、
fO1, the position that encloses of internal rotor root circle and outer rotor root circle be the second oil road setting position；gO1、aO1, interior turn
The position that sub- root circle and outer rotor root circle enclose is the setting position of oil input channel.Meanwhile aO1And bO1Between form oil sealing
Face simultaneously separates oil input channel 110 and the first oil road 130；fO1And gO1Between form oil sealing surface and by 130 He of the first oil road
Second oil road 150, separates；cO1And dO1Between form oil sealing surface and by the second oil road 150, and oil input channel 110 separates
It opens.
The position of oil input channel 110 and two oil roads is determined by the above method.In machine oil pump work, gO1And aO1It
Between the continuous oil suction of oil input channel 110 and oil absorption reaches maximum at maximum female surface.As rotor rotates, when M point and N point it
Between female surface and maximum female surface be overlapped after, rotor rotation can squeeze out machine oil from the first oil road 130, until M point and N point
Between female surface area be A0.Since internal rotor 300 and 200 thickness of outer rotor are balanced, oil expulsion channel 1 and 2 flow of oil expulsion channel
It is more unrelated than with rotor height and machine oil revolution speed, and it is only related with two oil expulsion channel positions.At this point, the female surface between M point and N point
Area relative to maximum female surface area reduction be 48.85mm2-31.8mm2=17.05mm2.This reduction amount is
The oil pump capacity of one oil road 130, accounts for the ratio of total flow are as follows: 17.05mm2/48.85mm2=35%.First oil road 130 is fuel-displaced
After, rotor continues to rotate, the second oil road 150, and beginning is fuel-displaced, until the area of the female surface between M point and N point is
Amin.At this point, rotor had been rotated by lubricating oil pump can fuel-displaced region.Since Amin is minimum, going out for two oil roads is not influenced
Oily ratio.That is the second oil road 150, oil pump capacity be remaining 65%.Rotor continues to rotate, that is, repeats above-mentioned movement.
The present embodiment with the first oil road 130 and the second oil road 150, fuel-displaced ratio be 7:13 for illustrate oil inlet
The setting position in road 110 and two oil roads.In actual use, it can show that the first oil road 130 and second goes out according to the method
Oil duct 150, fuel-displaced ratio be any other ratio.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (3)
1. a kind of lubricating oil pump of double oil road structures, the lubricating oil pump is rotor-type oil pump, and the lubricating oil pump includes the pump housing
(100), internal rotor (300) and outer rotor (200)；The pump housing (100) is internally provided with rotor chamber, the outer rotor (200)
It is placed in the rotor chamber, the internal rotor (300) is placed in the outer rotor (200)；The internal rotor (300) and outer rotor
(200) it is close to the rotor chamber end face；The pump housing (100) is provided with oil input channel (110) in the rotor chamber end face and goes out
Oil duct, it is characterized in that: lubricating oil pump setting is there are two oil road, the position of the oil input channel (110) of the lubricating oil pump and fuel-displaced
The position in road determines by the following method:
Face shared by gap between internal rotor (300) and the adjacent meshing point of outer rotor (200) two is female surface, the area of female surface with
The rotation of the rotor and change；The point of selected outer rotor (200) tooth profile the lowest point is M point, selectes an internal rotor
(300) point of tooth profile the lowest point is N point；When M point, N point, internal rotor (300) rotation center O1With the rotation of outer rotor (200)
Turn center of circle O2When collinear, the area of the female surface between M point and N point is maximum, and the meshing point edge at the maximum female surface both ends turns
Sub- direction of rotation is successively determined as a point and b point；
The area change situation for calculating female surface in rotor rotation process determines the area of female surface and the area of maximum female surface
Ratio be identical to the second oil road (150) oil drain quantity and total oil drain quantity ratio when the female surface position；The packet
The meshing point at appearance face both ends is successively determined as c point and d point along the direction that rotor rotates；
When M point rotates 180 °, i.e. M point rotates to for the first time and O1And O2When collinear, the meshing point edge at female surface both ends where M point
The direction of rotor rotation is successively determined as f point and g point；
By O1It puts line a point, b point, c point, d point, f point and g point respectively and extends to and internal rotor root circle and outer rotor root circle
Intersection；bO1、cO1, the position that encloses of internal rotor root circle and outer rotor root circle be the first oil road (130) setting position
It sets；dO1、fO1, the position that encloses of internal rotor root circle and outer rotor root circle be the second oil road (150) setting position；
gO1、aO1, the position that encloses of internal rotor root circle and outer rotor root circle be oil input channel (110) setting position.
2. the lubricating oil pump of double oil road structures according to claim 1, it is characterized in that: in the calculating rotor rotation process
The area change situation of female surface, is measured by mapping software query facility.
3. the lubricating oil pump of double oil road structures according to claim 1, it is characterized in that: the internal rotor of the lubricating oil pump
(300) number of teeth is 10, and outer rotor (200) number of teeth of the lubricating oil pump is 11, the rotation of the internal rotor (300) of the lubricating oil pump
Turn center of circle O1With the rotation center O of outer rotor (200)2An eccentric amount e apart is 1.89mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557443.5A CN109373167B (en) | 2018-12-19 | 2018-12-19 | Oil pump with double oil outlet channel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557443.5A CN109373167B (en) | 2018-12-19 | 2018-12-19 | Oil pump with double oil outlet channel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109373167A true CN109373167A (en) | 2019-02-22 |
| CN109373167B CN109373167B (en) | 2020-06-09 |
Family
ID=65371103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811557443.5A Active CN109373167B (en) | 2018-12-19 | 2018-12-19 | Oil pump with double oil outlet channel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109373167B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220683A (en) * | 1985-07-19 | 1987-01-29 | Sumitomo Electric Ind Ltd | Rotary pump with low noise |
| EP0779432A1 (en) * | 1995-12-14 | 1997-06-18 | Mitsubishi Materials Corporation | Oil pump rotor |
| EP0785361A1 (en) * | 1996-01-19 | 1997-07-23 | Aisin Seiki Kabushiki Kaisha | Oil pump apparatus |
| JP2003328959A (en) * | 2003-06-13 | 2003-11-19 | Hitachi Unisia Automotive Ltd | Oil pump |
| CN1875189A (en) * | 2003-10-29 | 2006-12-06 | Gkn金属烧结有限公司 | Double or multiple pump |
| CN101268278A (en) * | 2005-09-22 | 2008-09-17 | 爱信精机株式会社 | Oil pump rotor |
| CN107110152A (en) * | 2014-11-03 | 2017-08-29 | 大陆汽车有限责任公司 | Positive displacement pump |
| CN107208627A (en) * | 2015-01-30 | 2017-09-26 | 爱信机工株式会社 | Gear pump and its manufacture method |
| CN107923390A (en) * | 2015-09-07 | 2018-04-17 | 爱信艾达株式会社 | Gear pump |
-
2018
- 2018-12-19 CN CN201811557443.5A patent/CN109373167B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220683A (en) * | 1985-07-19 | 1987-01-29 | Sumitomo Electric Ind Ltd | Rotary pump with low noise |
| EP0779432A1 (en) * | 1995-12-14 | 1997-06-18 | Mitsubishi Materials Corporation | Oil pump rotor |
| EP0785361A1 (en) * | 1996-01-19 | 1997-07-23 | Aisin Seiki Kabushiki Kaisha | Oil pump apparatus |
| JP2003328959A (en) * | 2003-06-13 | 2003-11-19 | Hitachi Unisia Automotive Ltd | Oil pump |
| CN1875189A (en) * | 2003-10-29 | 2006-12-06 | Gkn金属烧结有限公司 | Double or multiple pump |
| CN101268278A (en) * | 2005-09-22 | 2008-09-17 | 爱信精机株式会社 | Oil pump rotor |
| CN107110152A (en) * | 2014-11-03 | 2017-08-29 | 大陆汽车有限责任公司 | Positive displacement pump |
| CN107208627A (en) * | 2015-01-30 | 2017-09-26 | 爱信机工株式会社 | Gear pump and its manufacture method |
| CN107923390A (en) * | 2015-09-07 | 2018-04-17 | 爱信艾达株式会社 | Gear pump |
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| Publication number | Publication date |
|---|---|
| CN109373167B (en) | 2020-06-09 |
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