CN201610774U - Assembly structure of rocker arm seat of diesel engine valve - Google Patents
Assembly structure of rocker arm seat of diesel engine valve Download PDFInfo
- Publication number
- CN201610774U CN201610774U CN2010201228262U CN201020122826U CN201610774U CN 201610774 U CN201610774 U CN 201610774U CN 2010201228262 U CN2010201228262 U CN 2010201228262U CN 201020122826 U CN201020122826 U CN 201020122826U CN 201610774 U CN201610774 U CN 201610774U
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- CN
- China
- Prior art keywords
- rocker arm
- diesel engine
- arm seat
- assembly structure
- arm bracket
- 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
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Abstract
The utility model discloses an assembly structure of a rocker arm seat of a diesel engine valve. Bolt holes of corresponding rocker arm seat fixing bolts of the rocker arm seat and a cylinder cover serving as a rocker arm seat assembly base are provided with cylindrical counter bores, and a positioning bush in contact fit with the counter bore is arranged corresponding to each fixing bolt. The assembly structure of the rocker arm seat of the diesel engine valve has stable and reliable structure so that the valve has longer service life.
Description
Technical field
The utility model relates to a kind of diesel engine spiracle rocker arm bracket assembly structure, especially is applied to the valve rocker seat assembly structure of four-valve diesel engine.
Background technique
Along with the carrying capacity of vehicle improves day by day, the requirement of diesel engine output power also constantly increases, and along with adding of Abgasgesetz is tight, the emission from vehicles standard also improves constantly.For reaching these requirements, four-valve diesel engine has substituted two original valve diesel gradually, and becomes development of diesel trend from now on.Rocking arm on the known two valve rocker seats contacts with single valve, and the rocking arm on the four valve rocker seats then contacts with air valve bridge, opens and closes in the time of by two valves of air valve bridge control.Hence one can see that, and the contact position of valve rocker seat and air valve bridge seems extremely important, and valve rocker seat and its installation matrix (referring to cylinder head here) just must have reliable and stable position relation so, open and close simultaneously so that air valve bridge is controlled two valves.But the rocker arm bracket in the existing valve rocker seat mechanism directly is fixed on rocker arm bracket on the cylinder head by bolt of long stem; rocker arm bracket is because the foozle of making; and make that with the matching gap of fixing bolt its assembly error often is difficult to guarantee; add the vibrations in the using process; be easy to cause the change of rocker arm bracket position; and then cause air valve bridge can not control two valves to open and close simultaneously, and then caused the eccentric wear of valve again, reduced the working life of valve.
Summary of the invention
Therefore, the purpose of this utility model is to provide a kind of assembly structure of diesel engine spiracle rocker arm bracket, and structural stability is reliable, makes valve have long working life.
The technical solution adopted in the utility model is:
The utility model diesel engine spiracle rocker arm bracket assembly structure; rocker arm bracket and be provided with the counterbore of cylinder as the bolt hole of the respective rocker arm seat fixing bolt of the cylinder head of this rocker arm bracket assembling matrix, and corresponding each fixing bolt is furnished with a positioning adapter with described counterbore contact matching.
Diesel engine spiracle rocker arm bracket assembly structure according to technical solutions of the utility model, satisfy with bolt spacing on the mating face normal direction, adopted tangential spacing of special mating face simultaneously, thereby can be so that the valve rocker seat obtains fixing reliably, and then the position relation between itself and cylinder head is maintained fixed, and make the control of valve that one reasonable basis be arranged.
And the assembling and positioning of valve rocker seat is convenient in the existence of positioning adapter, improves efficiency of assembling.
Above-mentioned diesel engine spiracle rocker arm bracket assembly structure, at least two of described bolts hole.
Description of drawings
Specify preferred implementation of the present utility model below in conjunction with Figure of description, wherein:
Fig. 1 is the utility model diesel engine spiracle rocker arm bracket assembly structure embodiment's a structural representation.
Fig. 2 is the decomposition texture schematic representation of diesel engine spiracle rocker arm bracket.
Among the figure: 1, bolt, 2, rocker arm bracket, 3, positioning adapter, 4, cylinder head, 5, bolt hole, 6, counterbore, 7, counterbore.
Embodiment
With reference to the attached Fig. 1 and 2 of explanation, it shows a kind of diesel engine spiracle rocker arm bracket assembly structure; rocker arm bracket 2 and be provided with the counterbore 6,7 of cylinder as the bolt hole 5 of the respective rocker arm seat fixing bolt of the cylinder head 4 of this rocker arm bracket assembling matrix, and corresponding each fixing bolt is furnished with a positioning adapter 3 with described counterbore contact matching.
About the matching relationship of positioning adapter in counterbore, the preferred gap fit system also can be selected interference or transition fit.Because relate to the location, so preferably select contact matching here for use, i.e. the matching relationship that guarantees with fit tolerance.
Nature, it should be that axis is identical with bolt that those skilled in the art also understands counterbore easily, is convenient to the cooperation of positioning adapter in fixing bolt.
Further, described bolt hole is at least two.Two bolts can satisfy the requirement fastening and location in principle, mainly are that the valve rocker pedestal is long-pending little, and the load that is carried is also little.
Claims (2)
1. diesel engine spiracle rocker arm bracket assembly structure, it is characterized in that: rocker arm bracket (2) and be provided with the counterbore (6,7) of cylinder as the bolt hole (5) of the respective rocker arm seat fixing bolt of the cylinder head (4) of this rocker arm bracket assembling matrix, and corresponding each fixing bolt is furnished with a positioning adapter (3) with described counterbore contact matching.
2. diesel engine spiracle rocker arm bracket assembly structure according to claim 1 is characterized in that: two of described bolts hole at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201228262U CN201610774U (en) | 2010-03-04 | 2010-03-04 | Assembly structure of rocker arm seat of diesel engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201228262U CN201610774U (en) | 2010-03-04 | 2010-03-04 | Assembly structure of rocker arm seat of diesel engine valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610774U true CN201610774U (en) | 2010-10-20 |
Family
ID=42961406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201228262U Expired - Lifetime CN201610774U (en) | 2010-03-04 | 2010-03-04 | Assembly structure of rocker arm seat of diesel engine valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356742A (en) * | 2018-12-12 | 2019-02-19 | 中国北方发动机研究所(天津) | A kind of engine cylinder cap with oil leab |
-
2010
- 2010-03-04 CN CN2010201228262U patent/CN201610774U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356742A (en) * | 2018-12-12 | 2019-02-19 | 中国北方发动机研究所(天津) | A kind of engine cylinder cap with oil leab |
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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 |
Granted publication date: 20101020 |
|
| CX01 | Expiry of patent term |