CN206468471U - A kind of New Common Rail pump roll wheel assembly structure - Google Patents
A kind of New Common Rail pump roll wheel assembly structure Download PDFInfo
- Publication number
- CN206468471U CN206468471U CN201720115832.7U CN201720115832U CN206468471U CN 206468471 U CN206468471 U CN 206468471U CN 201720115832 U CN201720115832 U CN 201720115832U CN 206468471 U CN206468471 U CN 206468471U
- Authority
- CN
- China
- Prior art keywords
- roller
- tappet body
- wheel assembly
- roll wheel
- lubricating oil
- 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
Links
- 239000010687 lubricating oil Substances 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of New Common Rail pump roll wheel assembly structure, it is related to car combustion engine and parts technical field, including tappet body and roller, the tappet body and roller are coordinated by roller chamber arc surface to be contacted, the tappet body side is provided with lubricating oil duct, the roller chamber arc surface that lubricating oil can be entered by lubricating oil duct；Set raised in the middle of the tappet intracoelomic cavity, the projection is contacted with plunger bottom surface；The external disc of tappet has a flat structure of cutting at symmetrical two, described to cut flat structure and the cylinder guide finger of outside correspondence position assembling forms the component that anti-roll wheel assembly is rotated.The utility model is simple in construction, manufacturing cost is relatively low, with high bearing capacity, with the design of simple anti-rotation, is designed with anti-roller dropping structure and assembles simple.
Description
Technical field
The present invention relates to car combustion engine and parts technical field, more particularly to common rail pump in electronic control system
Use roll wheel assembly structure.
Background technology
Common rail pump is the critical component of modern diesel engine electronic control system, and it is quantitative that its effect is to provide high pressure
Fuel oil, roll wheel assembly is the important component for connecting common rail pump inner camshaft and plunger matching parts, typically by roller, roller pin and tappet
Body is constituted, and wherein roller forms the kinematic pair of relative rolling with cam, and tappet body moves up and down in pump housing hole, bears plunger biography
The side force for high pressure fuel and the camshaft feedback passed.
Publication number：CN103452789A, patent name：For the cam mechanism of internal combustion engine oil feed pump, eliminate traditional
Roller structure and use flat tappet body structure pattern instead, added outside camshaft reduce relative motion cam ring, this is special
Although profit can reduce manufacturing cost and bring installation convenience, contact stress is relatively large between cam and tappet body,
High pressure use demand can not be met；
Publication number：CN105840377A, patent name：Economical oil feed pump tappet body guide frame, to patent
" CN103452789A " is optimized, and split type flat roller is employed and body structure of holding out, by from the flat of high-mechanic
The a certain degree of pressure-resistant performance for improving tappet body of bottom roller, but integrated carrying and resistance to high speed capability are still than roller structure
Difference；
Publication number：CN104989572A, patent name：For the split type electronically controlled unit pump of diesel engine, roller is devised
The Combined roll modular construction of+roller chamber+tappet body, is connected between roller chamber and tappet body with pin, integral rigidity and peace
Dress property is poor；
Notification number：CN205779400U, patent name：A kind of high-pressure oil pump tappet with needle bearing, devises one kind
Roll wheel assembly structure with needle bearing, is effectively reduced the frictional force between roller and roller pin, it is adaptable to high velocity environment,
But limited by dimensional space, it is difficult to select suitable needle bearing, it is impossible to while meeting high pressure and limiting at a high speed；
Publication number：CN103343723A, devises the tappet body roller with self-lubricating；
Notification number：Roller is similar with patent publication No. CN104989572A with roller cavity configuration in CN205154472U；
Notification number：CN202867063U also has similar structural shape；
Notification number：This in CN203347978U devises the roller latch structure with lubrication groove.
It can see from above-mentioned patent structure, otherwise the patent structure applied is designed to roller-less knot to simplify structure
Configuration formula（CN103452789A）, but high-mechanic stress can not be born；Devise roller+roller chamber+tappet body+connecting pin
Complex Assembled Structure, high rotating speed and high pressure demand can be met, but manufacturing process is complicated, assembling is more difficult
（CN205154472U、CN104989572A、CN202867063U）.
Utility model content
The purpose of this utility model be design it is a kind of can be while meeting simple in construction, inexpensive and high-mechanic performance rolling
Wheel assembly, the need for meeting high pressure common rail pump.
A kind of New Common Rail pump roll wheel assembly structure, including tappet body and roller, the tappet body and roller pass through rolling
Take turns chamber arc surface and coordinate contact, the tappet body side is provided with lubricating oil duct, and lubricating oil can be entered by lubricating oil duct
Roller chamber arc surface；Set raised in the middle of the tappet intracoelomic cavity, the projection is contacted with plunger bottom surface；The tappet is external
Disc has a flat structure of cutting at symmetrical two, described to cut flat structure and the cylinder guide finger of outside correspondence position assembling forms anti-roller
The component that component is rotated.
Further, the radius of the roller chamber arc surface is more than the radius of roller.
Further, the tappet intracoelomic cavity be equipped with plunger spring, plunger spring it is cylindrical cylindrical with tappet body inner chamber
Face gap coordinates.
Further, the lubricating oil oil-feed direction of the lubricating oil duct is in face of the direction of rotation of roller.
The utility model is simple in construction, manufacturing cost is relatively low, with high bearing capacity, with the design of simple anti-rotation,
Designed with anti-roller dropping structure and assemble simple.
Brief description of the drawings
Fig. 1 common rail pumps roll wheel assembly structural representation；
Fig. 2 common rail pumps roll wheel assembly front view.
Embodiment
Such as Fig. 1 and 2, a kind of New Common Rail pump roll wheel assembly structure is made up of 1 two parts of roller 2 and tappet body, is rolled
Wheel coordinates between being inside and outside circular arc with tappet body to be contacted, and lubricating oil duct 3, the oil-feed side of lubricating oil are disposed with the side of tappet body 1
To lubrication need to be improved in face of the direction of rotation of roller；The internal chamber wall of tappet body 1 may be used as the guiding of plunger spring；Tappet
There is projection 4 to design in the middle of the inner chamber of body 1, contacted with plunger bottom surface, increased wall thickness is to meet the high pressure of roll wheel assembly herein
Bearing requirements；The periphery of tappet body 1 has cuts flat structure 7 at symmetrical two, and it is the cylinder assembled with outside correspondence position that it, which is acted on,
Pin-shaped makes roller be constantly in preferable roller with cam and contacted into anti-roll wheel assembly rotary action；Tappet body coordinates with roller
Roller chamber arc surface 6 radius be more than roller 2 radius, its act on be roller load tappet body after will not be come off from bottom,
The assembling of roll wheel assembly is preferable.
Claims (4)
1. a kind of New Common Rail pump roll wheel assembly structure, including tappet body（1）And roller（2）, the tappet body（1）And roller
（2）Pass through roller chamber arc surface（6）Coordinate contact, it is characterised in that：The tappet body（1）Side is provided with lubricating oil duct
（3）, lubricating oil can pass through lubricating oil duct（3）The roller chamber arc surface of entrance（6）；The tappet body（1）Set in the middle of inner chamber
It is raised（4）, the projection（4）Contacted with plunger bottom surface；The tappet body（1）Periphery has cuts flat structure at symmetrical two（7）,
It is described to cut flat structure（7）The cylinder guide finger assembled with outside correspondence position forms the component that anti-roll wheel assembly is rotated.
2. a kind of New Common Rail pump roll wheel assembly structure according to claim 1, it is characterised in that：The roller chamber circle
Cambered surface（6）Radius be more than roller（2）Radius.
3. a kind of New Common Rail pump roll wheel assembly structure according to claim 1, it is characterised in that：The tappet body
（1）Inner chamber is equipped with plunger spring, the cylindrical and tappet body of plunger spring（1）Inner chamber periphery（5）Gap coordinates.
4. a kind of New Common Rail pump roll wheel assembly structure according to claim 1, it is characterised in that：The Lubricating Oil
Road（3）Lubricating oil oil-feed direction be in face of the direction of rotation of roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720115832.7U CN206468471U (en) | 2017-02-08 | 2017-02-08 | A kind of New Common Rail pump roll wheel assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720115832.7U CN206468471U (en) | 2017-02-08 | 2017-02-08 | A kind of New Common Rail pump roll wheel assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206468471U true CN206468471U (en) | 2017-09-05 |
Family
ID=59703288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720115832.7U Expired - Fee Related CN206468471U (en) | 2017-02-08 | 2017-02-08 | A kind of New Common Rail pump roll wheel assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206468471U (en) |
-
2017
- 2017-02-08 CN CN201720115832.7U patent/CN206468471U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170905 |