CN203670067U - Engine fuel pump roller tappet - Google Patents
Engine fuel pump roller tappet Download PDFInfo
- Publication number
- CN203670067U CN203670067U CN201320799422.0U CN201320799422U CN203670067U CN 203670067 U CN203670067 U CN 203670067U CN 201320799422 U CN201320799422 U CN 201320799422U CN 203670067 U CN203670067 U CN 203670067U
- Authority
- CN
- China
- Prior art keywords
- tappet
- roller
- engine fuel
- fuel pump
- support plate
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract 3
- 239000000295 fuel oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an engine fuel pump roller tappet. The engine fuel pump roller tappet comprises a tappet body, a rotation-preventing key, a roller, a roller pin and a pin roll; the tappet body is composed of a tappet outer shell and a supporting board which is connected with the tappet outer shell in a riveted mode. According to the engine fuel pump roller tappet, the tappet outer shell is formed by a seamless steel tube in a contour machining mode, the supporting board of the roller tappet is formed by a steel board in a contour machining mode, and the tappet outer shell and the supporting board are connected with each other in a riveted or welded mode; the tappet outer shell and the supporting board are formed in the contour machining mode, and the weight is obviously reduced by 10%-30% compared with an original structure.
Description
Technical field
The utility model relates to engine art, particularly relates to a kind of engine fuel injection pump roller tappet.
Background technique
Available engine is for driving the roller tappet of fuel pump, and rotatablely moving of cam of injection pump is converted into straight reciprocating motion by roller tappet, promotes the plunger of fuel pump, and fuel oil is pressed into oily rail, thereby ensures that the fuel oil of high pressure directly sprays into firing chamber.The motion of roller tappet is determined by cam of injection pump molded line.Ensure that roller tappet has enough intensity, wear resistance and long-life.Roller tappet adopts cylindrical tappet body, antirotation keys, roller, needle roller and bearing pin at present.Roller tappet quality and acceleration are larger, and the contact force that tappet bears is larger.Product work efficiency is low, and manufacture cost is high.
Model utility content
The purpose of this utility model is to provide one more rational structure, adopts panel beating type roller tappet.Under equal external diameter and active length, use the roller tappet of less weight to realize product work characteristic.Reduce roller tappet quality and acceleration, the contact force that tappet bears is reduced.Improve product work efficiency, reduce roller tappet manufacture cost.
The utility model adopts following technological scheme: a kind of engine fuel injection pump roller tappet, comprises tappet body, antirotation keys, roller, needle roller and bearing pin; Described tappet body is made up of tappet shell and support plate, together with described tappet shell passes through riveting with support plate.
In technique scheme, described tappet shell adopts seamless steel pipe machine shaping.
In technique scheme, described support plate adopts steel plate machine shaping.
In technique scheme, described tappet shell and support plate are by riveting or being welded together.
The utility model has the advantage of: the tappet shell of roller tappet adopts seamless steel pipe shaping operation, the support plate of roller tappet adopts steel plate forming processing; Link together by riveted joint or (welding); Tappet shell and support plate are by shaping operation, and weight obviously reduces, and reduce 10%-30% compared with original structure.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view in Fig. 1;
Wherein: the 1st, tappet shell, the 2nd, support plate, the 3rd, antirotation keys, the 4th, roller, the 5th, needle roller, the 6th, bearing pin.
Embodiment
As shown in Figure 1 and Figure 2, the tappet shell 1 of roller tappet adopts seamless steel pipe impact briquetting processing, and the support plate 2 of roller tappet adopts steel plate punched moulding.The support plate of roller tappet is riveted to roller 4 together with (or welding), needle roller 5, bearing pin 6 with the tappet shell 1 of roller tappet and form roll wheel assembly, be riveted on tappet shell 1 by bearing pin two ends; Antirotation keys 2 is fixed on tappet shell 1.
Cam of injection pump rotation when engine operation, drive roller 4 and needle roller 5 to rotate, and be converted to upper and lower straight reciprocating motion by roll wheel assembly, promote tappet shell 1 and support plate 2 up, support plate 2 acts on fuel pump piston rod, by fuel pump plunger, fuel oil is pressed into oily rail, thereby ensures that the fuel oil of high pressure directly sprays into firing chamber.
Disclosed all features in this specification, except mutually exclusive feature, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. an engine fuel injection pump roller tappet, comprises tappet body, antirotation keys, roller, needle roller and bearing pin; It is characterized by described tappet body and formed by tappet shell and support plate, together with described tappet shell passes through riveting with support plate.
2. a kind of engine fuel injection pump roller tappet according to claim 1, is characterized by described tappet shell and adopts seamless steel pipe machine shaping.
3. a kind of engine fuel injection pump roller tappet according to claim 1, is characterized by described support plate and adopts steel plate machine shaping.
4. according to a kind of engine fuel injection pump roller tappet described in claim 1 or 2 or 3, it is characterized by described tappet shell and support plate by riveting or being welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799422.0U CN203670067U (en) | 2013-12-09 | 2013-12-09 | Engine fuel pump roller tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799422.0U CN203670067U (en) | 2013-12-09 | 2013-12-09 | Engine fuel pump roller tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670067U true CN203670067U (en) | 2014-06-25 |
Family
ID=50966375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320799422.0U Expired - Lifetime CN203670067U (en) | 2013-12-09 | 2013-12-09 | Engine fuel pump roller tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279014A (en) * | 2014-08-04 | 2015-01-14 | 武汉东方骏驰精密制造有限公司 | Novel anti-rotation rolling wheel ascending and descending tappet |
| CN108626047A (en) * | 2017-03-21 | 2018-10-09 | 舍弗勒技术股份两合公司 | Tappet |
-
2013
- 2013-12-09 CN CN201320799422.0U patent/CN203670067U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279014A (en) * | 2014-08-04 | 2015-01-14 | 武汉东方骏驰精密制造有限公司 | Novel anti-rotation rolling wheel ascending and descending tappet |
| CN104279014B (en) * | 2014-08-04 | 2018-04-27 | 武汉东方骏驰精密制造有限公司 | New anti-rotation roller lifts tappet |
| CN108626047A (en) * | 2017-03-21 | 2018-10-09 | 舍弗勒技术股份两合公司 | Tappet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |