CN204877572U - Put overhead valve valve timing mechanism of camshaft down - Google Patents
Put overhead valve valve timing mechanism of camshaft down Download PDFInfo
- Publication number
- CN204877572U CN204877572U CN201520680778.1U CN201520680778U CN204877572U CN 204877572 U CN204877572 U CN 204877572U CN 201520680778 U CN201520680778 U CN 201520680778U CN 204877572 U CN204877572 U CN 204877572U
- Authority
- CN
- China
- Prior art keywords
- valve
- seat
- rocking arm
- camshaft
- distribution device
- 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
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a put overhead valve valve timing mechanism of camshaft down, its characterized in that: valve timing mechanism comprises valve group, rocking arm, push rod, tappet and camshaft, valve group comprises valve, valve seat, valve spring, valve spring seat and valve guide, the pivoted cam promotes tappet drive push rod and uses the rocking arm swing of rocking arm axle as the center on the camshaft, the wobbling rocking arm is used in on the valve spring retainer, the rocking arm with there is the valve clearance between the valve spring retainer. The utility model discloses a structural design change the valve seat after can convenient wearing and tearing, valve and valve seat enable the valve with the valve seat is closely laminated through valve guide and cooperation itself in addition, valve spring enables the subsides of valve head gentleness gate seat tightly when being used for guaranteeing valve closure.
Description
Technical field
The utility model relates to a kind of technical field of internal combustion engines, particularly relates to a kind of distribution device of lower arranging cam axle Overhead valve.
Background technique
Distribution device is the mechanism of controlling combustion engine air inlet and exhaust.Internal-combustion engine, after completing a work cycle, by the discarded discharge cylinder after expansion work, and must suck fresh charge in time in order to work constantly.The each cylinder working order of internal-combustion engine pressed by distribution device, in time opens and closes inlet and outlet door or inlet and outlet doorway, to ensure abundant ventilation.Distribution device can be divided into L head and inhead type two class by the mode that valve is arranged on internal-combustion engine.
Model utility content
The utility model provides a kind of lower arranging cam axle Overhead valve distribution device, and the technical problem that solve is structural design and the installation of distribution device.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: the Overhead valve distribution device of lower arranging cam axle, it is characterized in that: described distribution device is made up of valve group, rocking arm, push rod, tappet and camshaft, described valve group is made up of valve, valve seat, valve spring, cotter seat and valve guide bushing, the cam that described camshaft rotates promotes tappet and drives push rod that the rocking arm centered by pitman arm shaft is swung, the rocking arm of described swing acts on cotter seat, has valve clearance between described rocking arm and described cotter seat.
Further, the conical surface of described head portion that and the inner conical surface of described valve seat fit tightly.
Further, described valve seat is that independent annular air valve seat ring made by heat-resisting alloy steel or alloy cast iron.
Further, described valve seat press-in cylinder head or body.
From the above-mentioned description to the utility model structure, compared to the prior art, the utility model tool has the following advantages: the structural design that the utility model adopts changes valve seat after conveniently wearing and tearing, and valve and valve seat are coordinated by valve guide bushing and itself valve and valve seat can be made to fit tightly, valve spring is used for head portion that and valve seat being made to be adjacent to when ensureing valve-closing.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the Overhead valve gas distribution structure of the utility model lower arranging cam axle.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
First embodiment
With reference to figure 1, the Overhead valve distribution device of lower arranging cam axle, it is characterized in that: distribution device is made up of valve group, rocking arm 1, push rod 2, tappet 3 and camshaft 4, valve group is made up of valve 5, valve seat 6, valve spring 7, cotter seat 8 and valve guide bushing 9, the cam 41 that camshaft 4 rotates promotes tappet 3 and drives push rod 2 that the rocking arm 1 centered by pitman arm shaft 11 is swung, the rocking arm 1 swung acts on cotter seat 8, has valve clearance 10 between rocking arm 1 and cotter seat 8.
The conical surface of valve 5 head and the inner conical surface of valve seat 6 fit tightly, and valve seat 6 is that independent annular air valve seat ring made by heat-resisting alloy steel or alloy cast iron, and valve seat 6 is pressed into cylinder head or body.
These are only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. the Overhead valve distribution device of lower arranging cam axle, it is characterized in that: described distribution device is by valve group, rocking arm (1), push rod (2), tappet (3) and camshaft (4) composition, described push rod (2) is connected by coupling band with tappet (3), described valve group is by valve (5), valve seat (6), valve spring (7), the cotter seat (8) of fixed air door spring and valve guide bushing (9) composition, described valve (5) is placed in valve guide bushing (9), the upper cam (41) rotated of described camshaft (4) promotes tappet (3) and drives push rod (2) that the rocking arm (1) centered by pitman arm shaft (11) is swung, the rocking arm (1) of described swing acts on cotter seat (8), valve clearance (10) is had between described rocking arm (1) and described cotter seat (8).
2. the Overhead valve distribution device of lower arranging cam axle according to claim 1, is characterized in that: the conical surface of described valve (5) head and the inner conical surface of described valve seat (6) fit tightly.
3. the Overhead valve distribution device of lower arranging cam axle according to claim 1, is characterized in that: described valve seat (6) makes independent annular air valve seat ring for heat-resisting alloy steel or alloy cast iron.
4. the Overhead valve distribution device of lower arranging cam axle according to claim 1, is characterized in that: described valve seat (6) press-in cylinder head or body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680778.1U CN204877572U (en) | 2015-09-06 | 2015-09-06 | Put overhead valve valve timing mechanism of camshaft down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680778.1U CN204877572U (en) | 2015-09-06 | 2015-09-06 | Put overhead valve valve timing mechanism of camshaft down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877572U true CN204877572U (en) | 2015-12-16 |
Family
ID=54821955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520680778.1U Expired - Fee Related CN204877572U (en) | 2015-09-06 | 2015-09-06 | Put overhead valve valve timing mechanism of camshaft down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204877572U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676139A (en) * | 2017-09-29 | 2018-02-09 | 利辛县雨若信息科技有限公司 | A kind of valve actuating mechanism of automobile engine |
| CN108757082A (en) * | 2018-05-22 | 2018-11-06 | 大连理工大学 | Camshaft continuous variable valve mechanism is set at a kind of bottom |
| CN108915815A (en) * | 2018-09-06 | 2018-11-30 | 广西玉柴机器股份有限公司 | In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism |
-
2015
- 2015-09-06 CN CN201520680778.1U patent/CN204877572U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676139A (en) * | 2017-09-29 | 2018-02-09 | 利辛县雨若信息科技有限公司 | A kind of valve actuating mechanism of automobile engine |
| CN108757082A (en) * | 2018-05-22 | 2018-11-06 | 大连理工大学 | Camshaft continuous variable valve mechanism is set at a kind of bottom |
| CN108915815A (en) * | 2018-09-06 | 2018-11-30 | 广西玉柴机器股份有限公司 | In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151216 Termination date: 20160906 |