CN109882729A - A kind of gear type oil pump for the lubricating place being conveniently adjusted idle pulley neck bush - Google Patents
A kind of gear type oil pump for the lubricating place being conveniently adjusted idle pulley neck bush Download PDFInfo
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- CN109882729A CN109882729A CN201910274314.3A CN201910274314A CN109882729A CN 109882729 A CN109882729 A CN 109882729A CN 201910274314 A CN201910274314 A CN 201910274314A CN 109882729 A CN109882729 A CN 109882729A
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- Prior art keywords
- oil
- pump
- plunger
- idle pulley
- oil duct
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- 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.)
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- Lubrication Of Internal Combustion Engines (AREA)
- General Details Of Gearings (AREA)
Abstract
A kind of gear type oil pump for the lubricating place being conveniently adjusted idle pulley neck bush, including the pump housing, pump cover, idle pulley axis hole is provided on the pump housing, low pressure oil pocket, high-voltage oil cavity and pressure limiting valve, idle pulley axis hole internal pressure is equipped with bushing, bush inside is equipped with idler shaft, idle gear is installed on idler shaft, pressure limiting valve includes plunger, spring and plug screw, oil inlet and oil outlet are provided on pump cover, oil-through-hole is offered on the pump housing, the outer peripheral surface of idler shaft offers annular oil groove, the inside of idler shaft is equipped with oblique oil duct, one end of oblique oil duct is connected to annular oil groove, the other end is corresponding with the position of the bushing；Plunger offers arc-shaped oil scupper, and the cylindrical portion is equipped with chamfering close to one end of plug screw, and the second oil duct being arranged on the first oil duct and pump cover being arranged on the pump housing is connected to, and the second oil duct is connected to oil suction chamber.The gear type oil pump is convenient for being lubricated idle pulley neck bush, and the plunger type pressure limiting valve on the pump housing is not easy to suppress extremely, has extremely wide application prospect.
Description
Technical field
The present invention relates to engine lubrication system technical fields, are related specifically to a kind of profit for being conveniently adjusted idle pulley neck bush
The gear type oil pump of sliding position.
Background technique
The effect of lubricating oil pump is forcibly to be sent to engine each zero after machine oil is increased to certain pressure in lubricating system
On the moving surface of part, fuel pump structure form can be divided into gear type oil pump and rotor-type oil pump again.
Existing huge discharge gear type oil pump is typically mounted in the machine oil shell below engine crankcase, by starting
Gear on machine crankshaft drives transmission gear of engine oil pump, since engine crankcase is very big, in machine oil pump drive shaft and crankshaft
The heart is away from bigger, under the premise of transmission ratio determines, if simple by the tooth increased on transmission gear of engine oil pump and crankshaft
Wheel diameter matches center away from the gear being bound to cause on crankshaft is excessive with transmission gear of engine oil pump, will increase cost in this way, separately
The outer engine also gear very big without enough space layout diameters, so usually in transmission gear of engine oil pump and crankshaft toothed wheel
Between increase an idle gear gear driving force on crankshaft is transmitted on transmission gear of engine oil pump.In order to extend idle gear
Service life certainly will need to be lubricated the bushing installed on idler shaft.Currently, the machine oil in high-voltage oil cavity is introduced idle pulley
The bushing of axis needs that a perforative oil duct is arranged inside idler shaft, and then aperture makes the machine in high-voltage oil cavity on the pump housing
Oil can enter one end of oil duct by aperture, and flow into bushing by the inside of idler shaft.But it will so generate one
Idler shaft is then just put into axis hole, the oil duct of idler shaft by a problem since the idle pulley axis hole on the pump housing is held successfully in advance
One end and the aperture on the pump housing are smaller, it is difficult to be aligned, and such structure be also unfavorable for the direct lubricating place of bushing into
Row adjustment.
Continuing working for lubricating oil pump can make the inside of lubricating oil pump the excessively high phenomenon of oil pressure occur, will cause unnecessary effect
Consumption realizes the pressure of the inside of lubricating oil pump by pressure limiting valve so needing that pressure limiting valve is arranged on the outlet conduit of lubricating oil pump
Adjustment.In the prior art, plunger type pressure limiting valve is more commonly used pressure limiting valve, when oil pressure is excessively high, spring and pressure-releasing chamber
The stroke of interior adjustment of oil pressure plunger, lubricating oil are flowed out from drain tap, and then realize pressure release.So there is one to ask
Topic be easy to cause pressure limiting valve oil extraction to have some setbacks, so that valve be suppressed after valve unlatching after plunger is moved downwardly to and contacted with plug screw
Extremely.
Summary of the invention
The present invention is intended to provide a kind of gear type oil pump for the lubricating place for being conveniently adjusted idle pulley neck bush, the gear type
Lubricating oil pump pumps the plunger type pressure limiting valve of intracorporal installation with oil extraction is smooth, is not easy convenient for being lubricated to idle pulley neck bush
Suppress dead advantage.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of idle pulley neck bush of being conveniently adjusted
The gear type oil pump of lubricating place, including the pump housing, pump cover are provided with idle pulley axis hole, low pressure oil pocket, high pressure oil on the pump housing
Chamber and pressure limiting valve, the idle pulley axis hole internal pressure are equipped with bushing, and the bush inside is equipped with idler shaft, installs on the idler shaft
There is idle gear, the idle gear is engaged with transmission gear, and the transmission gear is installed on driving shaft, the centre of the driving shaft
Driving gear is installed, the driving gear is engaged with driven gear, and the driven gear is installed on driven shaft, the pressure limiting
Valve includes plunger, spring and plug screw, and oil inlet and oil outlet are provided on the pump cover, is offered on the pump housing for being connected to
The oil-through-hole of high-voltage oil cavity and idle pulley axis hole, the outer peripheral surface of the idler shaft offer annular oil groove, the inside of the idler shaft
Equipped with oblique oil duct, one end of the oblique oil duct is connected to annular oil groove, and the other end is corresponding with the position of the bushing；The column
Plug includes for pacifying spring-loaded cylindrical portion, and the cylindrical portion offers multiple arc-shaped oil scuppers close to one end of plug screw,
And junction of the outer peripheral surface and cylindrical portion of the cylindrical portion between the end face of plug screw is equipped with chamfering, so that the plunger
Cylindrical portion contacted with plug screw after the circumferential oil guide groove of a circle, the pump housing setting are formed between the cylindrical portion bottom end and plug screw
There is the first oil duct, first oil duct is located at oil scupper side, and the pump cover is provided with the second oil duct, first oil duct and institute
The connection of the second oil duct is stated, second oil duct is connected to the oil suction chamber, when the plunger moves down and connects with the plug screw
After touch, the lubricating oil of the plunger body is in oil scupper from flowing out in the oil guide groove formed between cylindrical portion bottom end and plug screw,
Enter the oil suction chamber after then flowing sequentially through the first oil duct, the second oil duct.
Preferably, the quantity of the oil scupper is four, and four oil scuppers are uniformly distributed in the bottom four of the plunger
Week.
Compared to the prior art, the invention has the following advantages: the present invention on the pump housing by opening up oil-through-hole, and
Oblique oil duct is offered in the idler shaft for being located at oil-through-hole side, oblique oil duct is close to one end of high-voltage oil cavity and the end position of oil-through-hole
It sets and matches, consequently facilitating alignment between the two, while it is logical for being connected to also along the circumferential direction to offer a circle in idler shaft
The end of oilhole and oblique oil duct close to one end of high-voltage oil cavity annular oil groove so that idler shaft is inserted into idle pulley axis hole
Afterwards, even if one end aperture of the end of oil-through-hole with oblique oil duct close to high-voltage oil cavity is not aligned completely, lubricating oil can also be by
Oil-through-hole enters the oblique oil duct inside idler shaft by annular oil groove, and is different from the prior art carrying out idle pulley neck bush
The case where position of lubrication can not change, the present invention also have the advantages that one it is significant are as follows: be conveniently adjusted to obtain lubricating oil in circle
The best supply position that circumferential direction is lubricated idle pulley neck bush.In addition, the pressure limiting valve in the present invention is opened in the bottom of plunger
Oil scupper equipped with arc, valve are opened after back-plunger moves downwardly to and contact with plug screw, and the lubricating oil in plunger still can be from
From being flowed out in oil scupper in the oil guide groove formed between cylindrical portion bottom end and plug screw, then flow sequentially through the first oil duct,
After second oil duct enter oil suction chamber, oil scupper outflow and followed by the first oil duct on the pump housing, the second oil duct on pump cover after
Into oil suction chamber, the case where oil extraction has some setbacks, valve is suffocated is effectively prevented, extends lubricating oil pump upper prop plug pressure limiting valve
Service life, have extremely wide application prospect.
Detailed description of the invention
Fig. 1 is the overall structure figure of middle gear formula lubricating oil pump of the present invention.
Fig. 2 is that middle gear formula lubricating oil pump of the present invention removes the structure chart after pump cover.
Fig. 3 is the sectional view of middle gear formula lubricating oil pump of the present invention.
Fig. 4 is the partial enlarged view at the position A in Fig. 3.
Fig. 5 is the sectional view of plunger type pressure limiting valve in the present invention.
Fig. 6 is the three-dimensional structure diagram of plunger in the present invention.
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- bushing
4 --- idler shaft 5 --- idle gear 6 --- transmission gears
7 --- driving shaft 8 --- driving gear 9 --- driven gears
10 --- driven shaft 11 --- oil inlet 12 --- oil outlets
13 --- oil-through-hole 14 --- oblique oil duct 15 --- annular oil grooves
16 --- high-voltage oil cavity 101 --- plunger 102 --- springs
103 --- plug screw 104 --- oil scupper 105 --- first oil ducts
106 --- the second oil duct 107 --- oil suction chambers.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
A kind of gear type oil pump for the lubricating place being conveniently adjusted idle pulley neck bush, as shown in figures 1 to 6, including the pump housing 1,
Pump cover 2, idle pulley axis hole, low pressure oil pocket, high-voltage oil cavity 16 and pressure limiting valve are provided on the pump housing 1, and idle pulley axis hole internal pressure is equipped with bushing
3, idler shaft 4 is installed inside bushing 3, idle gear 5 is installed, idle gear 5 is engaged with transmission gear 6, driving cog on idler shaft 4
Wheel 6 is installed on driving shaft 7, and the centre of driving shaft 7 is equipped with driving gear 8, and driving gear 8 is engaged with driven gear 9, driven
Gear 9 is installed on driven shaft 10, and pressure limiting valve includes plunger 101, spring 102 and plug screw 103, is provided with oil inlet on pump cover 2
11 and oil outlet 12, offer the oil-through-hole 13 for being connected to high-voltage oil cavity 16 Yu idle pulley axis hole on the pump housing 1, idler shaft 4 it is outer
Circumferential surface offers annular oil groove 15, and the inside of idler shaft 4 is equipped with oblique oil duct 14, one end of the oblique oil duct 14 and annular oil groove 15
Connection, the other end are corresponding with the position of bushing 3；Plunger 101 includes the cylindrical portion for installing spring 102, and cylindrical portion is close
One end of plug screw 103 offers multiple arc-shaped oil scuppers 104, and the outer peripheral surface of the cylindrical portion and cylindrical portion are close to plug screw
Junction between 103 end face is equipped with chamfering so that the cylindrical portion of plunger 101 contacted with plug screw 103 after cylindrical portion bottom
The circumferential oil guide groove of a circle is formed between end and plug screw 103, the pump housing 1 is provided with the first oil duct 105, and the first oil duct 105 is located at row
104 side of oil groove, pump cover 2 are provided with the second oil duct 106, and the first oil duct 105 is connected to the second oil duct 106, the second oil duct 106 with
Oil suction chamber 107 is connected to, and after plunger 101 moves down and contacts with plug screw 103, lubricating oil inside plunger 101 is from oil scupper
It is flowed out in 104 in the oil guide groove formed between cylindrical portion bottom end and plug screw 103, then flows sequentially through the first oil duct 105, second
Enter oil suction chamber 107 after oil duct 106.
The present invention offers tiltedly by opening up oil-through-hole 13 on the pump housing 1, and in the idler shaft 4 for being located at 13 side of oil-through-hole
Oil duct 14, oblique oil duct 14 match close to one end of high-voltage oil cavity 16 and the terminal position of oil-through-hole 13, consequently facilitating the two it
Between alignment, while also in idler shaft 4 along the circumferential direction offer a circle for be connected to oil-through-hole 13 end and oblique oil duct 14
Annular oil groove 15 close to one end of high-voltage oil cavity 16, so that after idler shaft 4 is inserted into idle pulley axis hole, even if oil-through-hole
One end aperture of 13 end with oblique oil duct 14 close to high-voltage oil cavity 16 is not aligned completely, and lubricating oil can also be by oil-through-hole 13
Enter the oblique oil duct 14 inside idler shaft 4 by annular oil groove 15, and is different from the prior art to the bushing 3 of idler shaft 4
The case where position being lubricated can not change, the present invention also have the advantages that one it is significant: it is conveniently adjusted to obtain lubricating oil
In the best supply position that bushing 3 of the circumferencial direction to idler shaft 4 is lubricated.In addition, the pressure limiting valve in the present invention is in plunger
101 bottom offers the oil scupper 104 of arc, and valve is opened after back-plunger moves downwardly to and contact with plug screw 103, plunger
Lubricating oil in 101 can still flow out in the oil guide groove formed between cylindrical portion bottom end and plug screw 103 from oil scupper 104, so
Afterwards followed by after the first oil duct 105, the second oil duct 106 enter the oil suction chamber 107, oil scupper 104 outflow and followed by
Enter oil suction chamber 107 after the second oil duct 106 on the first oil duct 105, pump cover 2 on the pump housing 1, effectively prevents oil extraction and have some setbacks
Freely, the case where valve is suffocated extends the service life of lubricating oil pump upper prop plug pressure limiting valve.
As a kind of preferred embodiment of the present invention, the quantity of oil scupper 104 is four, and four oil scuppers 104 are equal
The even bottom surrounding for being distributed in plunger 101.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.
Claims (2)
1. a kind of gear type oil pump for the lubricating place for being conveniently adjusted idle pulley neck bush, including the pump housing (1), pump cover (2), described
Idle pulley axis hole, low pressure oil pocket, high-voltage oil cavity (16) and pressure limiting valve are provided on the pump housing (1), the idle pulley axis hole internal pressure is equipped with lining
It covers (3), is equipped with idler shaft (4), is equipped with idle gear (5) on the idler shaft (4), the lazy tooth inside the bushing (3)
Wheel (5) is engaged with transmission gear (6), and the transmission gear (6) is installed on driving shaft (7), the intermediate peace of the driving shaft (7)
Equipped with driving gear (8), the driving gear (8) is engaged with driven gear (9), and the driven gear (9) is installed on driven shaft
(10) on, the pressure limiting valve includes plunger (101), spring (102) and plug screw (103), is provided with oil inlet on the pump cover (2)
(11) and oil outlet (12), it is characterised in that: offer on the pump housing (1) for being connected to high-voltage oil cavity (16) and idle pulley axis hole
Oil-through-hole (13), the outer peripheral surface of the idler shaft (4) offers annular oil groove (15), and the inside of the idler shaft (4) is equipped with
Oblique oil duct (14), one end of the oblique oil duct (14) are connected to annular oil groove (15), the position phase of the other end and the bushing (3)
It is corresponding；The plunger (101) includes the cylindrical portion for installing spring (102), the one end of the cylindrical portion close to plug screw (103)
Offer multiple arc-shaped oil scuppers (104), and the outer peripheral surface of the cylindrical portion and cylindrical portion close to the end face of plug screw (103) it
Between junction be equipped with chamfering so that the cylindrical portion of the plunger (101) cylindrical portion bottom after being contacted with plug screw (103)
The circumferential oil guide groove of a circle is formed between end and plug screw (103), the pump housing (1) is provided with the first oil duct (105), and described first
Oil duct (105) is located at oil scupper (104) side, and the pump cover (2) is provided with the second oil duct (106), first oil duct (105)
It is connected to second oil duct (106), second oil duct (106) is connected to the oil suction chamber (107), when the plunger
(101) after moving down and contacting with the plug screw (103), the internal lubricating oil of the plunger (101) is from oil scupper (104)
It flows out in the oil guide groove formed between cylindrical portion bottom end and plug screw (103), then flows sequentially through the first oil duct (105), second
Oil duct (106) enters the oil suction chamber (107) afterwards.
2. gear type oil pump according to claim 1, it is characterised in that: the quantity of the oil scupper (104) is four,
And four oil scuppers (104) are uniformly distributed in the bottom surrounding of the plunger (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274314.3A CN109882729B (en) | 2019-04-08 | 2019-04-08 | Gear type oil pump convenient for adjusting lubrication position of idler shaft bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274314.3A CN109882729B (en) | 2019-04-08 | 2019-04-08 | Gear type oil pump convenient for adjusting lubrication position of idler shaft bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882729A true CN109882729A (en) | 2019-06-14 |
| CN109882729B CN109882729B (en) | 2023-09-19 |
Family
ID=66936345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910274314.3A Active CN109882729B (en) | 2019-04-08 | 2019-04-08 | Gear type oil pump convenient for adjusting lubrication position of idler shaft bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109882729B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070062037A (en) * | 2005-12-12 | 2007-06-15 | 현대자동차주식회사 | Discrete type idler gear shaft assembly |
| CN102095069A (en) * | 2010-11-13 | 2011-06-15 | 湖南机油泵股份有限公司 | Oil pump with safety regulation integrated valve |
| CN103225736A (en) * | 2013-04-16 | 2013-07-31 | 湖南机油泵股份有限公司 | Engine oil pump with stable oil pressure |
| CN103574254A (en) * | 2013-10-17 | 2014-02-12 | 湖南机油泵股份有限公司 | Planar type pressure-limiting valve oil pump |
| CN103807478A (en) * | 2012-11-01 | 2014-05-21 | 现代自动车株式会社 | Oil relief valve |
| CN105627073A (en) * | 2016-03-21 | 2016-06-01 | 奇瑞汽车股份有限公司 | Rotor oil pump |
| CN106051443A (en) * | 2016-08-17 | 2016-10-26 | 湖南机油泵股份有限公司 | Machine oil pump with idle gear |
| CN106194317A (en) * | 2015-04-30 | 2016-12-07 | 内蒙古欧意德发动机有限公司 | Pressure limiting valve |
| JP2017067011A (en) * | 2015-09-30 | 2017-04-06 | 北越工業株式会社 | Oil injection type screw compressor |
| CN108488608A (en) * | 2018-05-24 | 2018-09-04 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plunger and improved engine oil pump pressure-limiting valve |
| CN108626417A (en) * | 2017-03-22 | 2018-10-09 | 东风汽车泵业有限公司 | A kind of pressure limiting valve plunger on lubricating pump of automobile |
| CN209782193U (en) * | 2019-04-08 | 2019-12-13 | 湖南机油泵股份有限公司 | Gear type oil pump convenient for adjusting lubricating position of idler shaft bushing |
-
2019
- 2019-04-08 CN CN201910274314.3A patent/CN109882729B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070062037A (en) * | 2005-12-12 | 2007-06-15 | 현대자동차주식회사 | Discrete type idler gear shaft assembly |
| CN102095069A (en) * | 2010-11-13 | 2011-06-15 | 湖南机油泵股份有限公司 | Oil pump with safety regulation integrated valve |
| CN103807478A (en) * | 2012-11-01 | 2014-05-21 | 现代自动车株式会社 | Oil relief valve |
| CN103225736A (en) * | 2013-04-16 | 2013-07-31 | 湖南机油泵股份有限公司 | Engine oil pump with stable oil pressure |
| CN103574254A (en) * | 2013-10-17 | 2014-02-12 | 湖南机油泵股份有限公司 | Planar type pressure-limiting valve oil pump |
| CN106194317A (en) * | 2015-04-30 | 2016-12-07 | 内蒙古欧意德发动机有限公司 | Pressure limiting valve |
| JP2017067011A (en) * | 2015-09-30 | 2017-04-06 | 北越工業株式会社 | Oil injection type screw compressor |
| CN105627073A (en) * | 2016-03-21 | 2016-06-01 | 奇瑞汽车股份有限公司 | Rotor oil pump |
| CN106051443A (en) * | 2016-08-17 | 2016-10-26 | 湖南机油泵股份有限公司 | Machine oil pump with idle gear |
| CN108626417A (en) * | 2017-03-22 | 2018-10-09 | 东风汽车泵业有限公司 | A kind of pressure limiting valve plunger on lubricating pump of automobile |
| CN108488608A (en) * | 2018-05-24 | 2018-09-04 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plunger and improved engine oil pump pressure-limiting valve |
| CN209782193U (en) * | 2019-04-08 | 2019-12-13 | 湖南机油泵股份有限公司 | Gear type oil pump convenient for adjusting lubricating position of idler shaft bushing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109882729B (en) | 2023-09-19 |
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