CN102654094A - Fixed roller pin for high-pressure oil pump - Google Patents
Fixed roller pin for high-pressure oil pump Download PDFInfo
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- CN102654094A CN102654094A CN2012101516282A CN201210151628A CN102654094A CN 102654094 A CN102654094 A CN 102654094A CN 2012101516282 A CN2012101516282 A CN 2012101516282A CN 201210151628 A CN201210151628 A CN 201210151628A CN 102654094 A CN102654094 A CN 102654094A
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- hole
- shank
- along
- lubrication
- roller pin
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- Reciprocating Pumps (AREA)
Abstract
The invention relates to a fixed roller pin for a high-pressure oil pump. The fixed roller pin comprises a cylindrical pin body; one end of the pin body is provided with a lug boss, and the other end of the pin body is provided with a positioning hole along an axial center line of the pin body. The fixed roller pin is characterized in that two grooves are symmetrically arranged on the outer surface of the pin body along the axial direction of the pin body; lubrication oil holes which radially pass through along the pin body are arranged in groove bodies of grooves; openings at the two ends of the lubrication oil hole are respectively arranged in the two grooves; a lubrication hole is arranged in the positioning hole along the axial center line of the pin body; the lubrication hole which is axially arranged along the pin body passes through the lubrication oil hole which is radially arranged along the pin body; a lubrication inclined hole is arranged on the pin body which is close to one end of the positioning hole along the pin body in a radially inclined manner; and the lubrication inclined hole is communicated with the lubrication hole which is axially arranged along the pin body. The fixed roller pin provided by the invention introduces lubrication oil into an oil storage groove; and lubrication oil is contained and distributed in the oil storage groove. When the fixed roller pin is in use, a roller forms a movement oil membrane with a roller pin when moving, so that the contact form is changed; the abrasion is improved; the service life is prolonged; and the bearing capability of the roller pin is improved.
Description
Technical field
The present invention relates to a kind of high pressure oil pump and use motionless roller pin, especially a kind of roller pin that is used for improving the bearing capacity of use for diesel engine high pressure oil pump roller.
Background technique
Along with development of times, technological continually develops and innovates, the continuous promotion of energy-conserving and environment-protective, and the fuel-injected high-pressure trend is the road of the development certainty of fuel oil supply system.During work, the rotation that roller plays in Injection Pump cam is converted into the running that plunger movement is accomplished pump, is one of important spare part of automobile work.Because roller often is in the state of high-speed rotation, also is one of workpiece easy to wear in the oil pump.In the tappet body component that uses in the past; It between roller and the roller pin Spielpassung; Lubricant oil can not get into very fully between roller and the roller pin and be lubricated, and along with the increase gradually of edge stress, makes that the contact stress between roller and the cam friction pair continues to increase; Aggravate the wearing and tearing between roller and the roller pin, reduced the working life of roller and roller pin.Thereby lubricated and the power oil film of pair roller pin have special requirement.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the existing technology, provide a kind of high pressure oil pump to use motionless roller pin, simple in structure, compact and reasonable, high, the anti-contact fatigue property of wear resistance are high, thereby have prolonged the working life of roller and roller pin.
According to technological scheme provided by the invention, said high pressure oil pump is used motionless roller pin, comprises cylindrical shank, is provided with boss at the end face of said shank one end, offers positioning hole at the end face of the shank the other end along the longitudinal center line of shank; Characteristic is: in the outer surface upper edge of said shank shank axially be symmetrical set two grooves, in the cell body of said groove, offer oilhole, said oilhole radially runs through along shank, the both ends open of oilhole is separately positioned in two grooves; Longitudinal center line along shank in said positioning hole is offered lubrication hole, the said oilhole of lubrication hole through radially being provided with along shank that axially is provided with along shank; Radial skew near the shank upper edge shank of positioning hole one end is offered lubricated inclined hole, and this lubricated inclined hole is communicated with the lubrication hole of axially offering along shank.
On the shank near boss one end, offer the positioning through hole that radially is provided with along shank, the positioning through hole openings at two ends is positioned on the external cylindrical surface of shank.
Said lubricated inclined hole is towards the positioning hole lopsidedness, and the opening that should lubricated inclined hole be positioned at opening and positioning through hole one side on the shank external cylindrical surface is on same vertical surface.
Offer the first trapped fuel hole and the second trapped fuel hole respectively in the both sides of said positioning hole, the length in the first trapped fuel hole is greater than the length in the second trapped fuel hole.
Said positioning hole, the first trapped fuel hole and the second trapped fuel hole are positioned on same the center line of shank end face.
High pressure oil pump of the present invention is simple in structure with motionless roller pin, compact and reasonable; The present invention guides to lubricant oil in the oil storage tank through the oil circuit design; Oil storage tank holds and distribution lubricant oil, and when roller pin and roller were used, the roller motion formed the motion oil film with roller pin; Change the contact form, improved wearing and tearing; Prolong working life, also improved the bearing capacity of roller pin simultaneously greatly, satisfied current high pressure, ultrahigh pressure demand.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with concrete accompanying drawing the present invention is described further.
Like Fig. 1 ~ shown in Figure 2: high pressure oil pump comprises shank 1, boss 2, groove 3, oilhole 4, lubricated inclined hole 5, positioning hole 6, lubrication hole 7, positioning through hole 8, the first trapped fuel hole 9, the second trapped fuel hole 10 etc. with motionless roller pin.
The present invention includes cylindrical shank 1, be provided with coniform boss 2 at the end face of said shank 1 one ends, this boss 2 is a false boss, and the clamping when being used for surface treatment is used; Offer step-like positioning hole 6 at the end face of said shank 1 the other end along the longitudinal center line of shank 1;
Near the shank 1 upper edge shank 1 of boss 2 one ends radially offer positioning through hole 8, positioning through hole 8 openings at two ends are positioned on the external cylindrical surface of shank 1, this positioning through hole 8 is used as the positioning hole of shank 1; In the outer surface upper edge of said shank 1 shank 1 axially be symmetrical set two grooves 3, this groove 3 is used for trapped fuel; In the cell body of said groove 3, offer oilhole 4, said oilhole 4 radially runs through along shank 1, and the both ends open of oilhole 4 is separately positioned in two grooves 3;
In said positioning hole 6, offer lubrication hole 7, the said oilhole 4 of lubrication hole 7 that axially is provided with along shank 1 through radially being provided with along shank 1 along the longitudinal center line of shank 1; Offering lubricated inclined hole 6 near the radial skew of the shank 1 upper edge shank 1 of positioning hole 6 one ends, this lubricated inclined hole 6 is communicated with the lubrication hole of axially offering along shank 17; Said lubricated inclined hole 6 is to positioning hole 6 lopsidedness, and the opening that should lubricated inclined hole 6 be positioned at opening and positioning through hole 8 one sides on shank 1 external cylindrical surface is on same vertical surface;
As shown in Figure 2, offer the length of the length in the first trapped fuel hole 9 and 10, the first trapped fuel holes 9, the second trapped fuel hole respectively greater than the second trapped fuel hole 10 in the both sides of said positioning hole 6; Said positioning hole 6, the first trapped fuel hole 9 and the second trapped fuel hole 10 are positioned on same the center line of shank 1 end face; Wherein, the said first trapped fuel hole 9 is except being used for trapped fuel, and also as the processing technology hole, the said second trapped fuel hole 10 is as the trapped fuel hole.
Roller pin of the present invention has formed unique lubricating oil path passage, meets the requirement of high pressure with roller pin for fuel pump (axle).During work, said roller pin (axle) is fixed in the tappet body, and lubricant oil gets into lubrication hole 7 from processing positioning hole 6, and lubrication hole 7 links to each other with lubricated inclined hole 5, and then lubricant oil gets into lubricated inclined hole 5, thereby through lubricated roller pin 1 periphery of lubricating oil path; Meanwhile, oilhole 4 communicates with lubrication hole 7, and then lubricant oil enters into roller pin 1 and enters in the trapped fuel groove 3 through oilhole 4, thus lubricated roller pin 1.
Roller pin novel structure of the present invention, superior performance, anti-wear raising greatly.Through roller pin specific lubricating oil road; Make the roller pin sufficient lubrication can between roller and roller pin, form one deck power oil film during work, effectively raise its bearing capacity; Strengthen the antiwear property of roller pin greatly, prolonged the working life of roller and roller pin.
Claims (5)
1. a high pressure oil pump is used motionless roller pin, comprises cylindrical shank (1), is provided with boss (2) at the end face of said shank (1) one end, offers positioning hole (6) at the end face of shank (1) the other end along the longitudinal center line of shank (1); It is characterized in that: axially be symmetrical set two grooves (3) at the outer surface upper edge of said shank (1) shank (1); In the cell body of said groove (3), offer oilhole (4); Said oilhole (4) radially runs through along shank (1), and the both ends open of oilhole (4) is separately positioned in two grooves (3); In said positioning hole (6), offer lubrication hole (7), the said oilhole (4) of lubrication hole (7) that axially is provided with along shank (1) through radially being provided with along shank (1) along the longitudinal center line of shank (1); Radial skew near shank (1) the upper edge shank (1) of positioning hole (6) one ends is offered lubricated inclined hole (6), and this lubricated inclined hole (6) is communicated with the lubrication hole of axially offering along shank (1) (7).
2. high pressure oil pump as claimed in claim 1 is used motionless roller pin; It is characterized in that: on the shank (1) near boss (2) one ends, offer the positioning through hole (8) that radially is provided with along shank (1), positioning through hole (8) openings at two ends is positioned on the external cylindrical surface of shank (1).
3. high pressure oil pump as claimed in claim 2 is used motionless roller pin; It is characterized in that: said lubricated inclined hole (6) is towards positioning hole (6) lopsidedness, and the opening that should lubricated inclined hole (6) be positioned at opening and positioning through hole (8) one sides on shank (1) external cylindrical surface is on same vertical surface.
4. high pressure oil pump as claimed in claim 1 is used motionless roller pin; It is characterized in that: offer the first trapped fuel hole (9) and the second trapped fuel hole (10) respectively in the both sides of said positioning hole (6), the length in the first trapped fuel hole (9) is greater than the length in the second trapped fuel hole (10).
5. high pressure oil pump as claimed in claim 4 is used motionless roller pin, it is characterized in that: said positioning hole (6), the first trapped fuel hole (9) and the second trapped fuel hole (10) are positioned on same the center line of shank (1) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101516282A CN102654094A (en) | 2012-05-15 | 2012-05-15 | Fixed roller pin for high-pressure oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101516282A CN102654094A (en) | 2012-05-15 | 2012-05-15 | Fixed roller pin for high-pressure oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102654094A true CN102654094A (en) | 2012-09-05 |
Family
ID=46729794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101516282A Pending CN102654094A (en) | 2012-05-15 | 2012-05-15 | Fixed roller pin for high-pressure oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102654094A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05332222A (en) * | 1992-05-27 | 1993-12-14 | Nippondenso Co Ltd | Fuel injection pump |
| JPH10220321A (en) * | 1997-01-28 | 1998-08-18 | Cummins Engine Co Inc | High pressure fuel pump unit and high pressure fuel pump assembly |
| WO1999002852A1 (en) * | 1997-07-11 | 1999-01-21 | Robert Bosch Gmbh | Piston pump for high pressure fuel supply |
| JPH11200989A (en) * | 1998-01-12 | 1999-07-27 | Mitsubishi Electric Corp | Fuel injection pump |
| JP2001317430A (en) * | 2000-05-09 | 2001-11-16 | Bosch Automotive Systems Corp | Tappet lubricating mechanism for fuel feed pump |
| CN101479466A (en) * | 2006-06-30 | 2009-07-08 | 卡特彼勒公司 | Tappet assembly |
| CN202645805U (en) * | 2012-05-15 | 2013-01-02 | 无锡锡州机械有限公司 | Fixed roller pin for high pressure oil pump |
-
2012
- 2012-05-15 CN CN2012101516282A patent/CN102654094A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05332222A (en) * | 1992-05-27 | 1993-12-14 | Nippondenso Co Ltd | Fuel injection pump |
| JPH10220321A (en) * | 1997-01-28 | 1998-08-18 | Cummins Engine Co Inc | High pressure fuel pump unit and high pressure fuel pump assembly |
| WO1999002852A1 (en) * | 1997-07-11 | 1999-01-21 | Robert Bosch Gmbh | Piston pump for high pressure fuel supply |
| JPH11200989A (en) * | 1998-01-12 | 1999-07-27 | Mitsubishi Electric Corp | Fuel injection pump |
| JP2001317430A (en) * | 2000-05-09 | 2001-11-16 | Bosch Automotive Systems Corp | Tappet lubricating mechanism for fuel feed pump |
| CN101479466A (en) * | 2006-06-30 | 2009-07-08 | 卡特彼勒公司 | Tappet assembly |
| CN202645805U (en) * | 2012-05-15 | 2013-01-02 | 无锡锡州机械有限公司 | Fixed roller pin for high pressure oil pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120905 |