CN204691845U - A kind of valve group mechanism for bulldozer engine distribution - Google Patents
A kind of valve group mechanism for bulldozer engine distribution Download PDFInfo
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- CN204691845U CN204691845U CN201520220684.6U CN201520220684U CN204691845U CN 204691845 U CN204691845 U CN 204691845U CN 201520220684 U CN201520220684 U CN 201520220684U CN 204691845 U CN204691845 U CN 204691845U
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Abstract
The utility model discloses a kind of valve group mechanism for bulldozer engine distribution, comprise mounting base, valve seat, valve stem, valve guide bushing, valve spring, jump ring, spring seat and lock banking stop, cavity is provided with in mounting base, valve seat is positioned at the bottom of cavity, valve stem is arranged on directly over valve seat, valve guide bushing is socketed on valve stem, the top of valve seat is cone shape, the contacting point of valve guide bushing and valve seat is the inverted tubaeform shape matched with cone shape, the first half of valve guide bushing is nested in valve spring, valve spring extends mounting base, the top of valve spring is fixed on spring seat by jump ring, spring seat is positioned at the top of valve stem, lock banking stop is fixed on the top of spring seat, the top of valve seat of the present utility model is cone shape, the contacting point sealability of valve guide bushing and valve seat is high, valve stem adopts Silichrome Steel material to make, Wear-resistant, high-temperature resistant, long service life, have a good application prospect.
Description
Technical field
The utility model relates to a kind of valve group mechanism for bulldozer engine distribution, belongs to bulldozer machinery component technology field.
Background technique
Distribution device is the requirement according to the work cycle of carrying out in each cylinder of motor and ignition order, time opening enters with each cylinder of closedown, exhaust valve, fresh inflammable mixture (petrol engine) or air (diesel engine) is made to be entered cylinder in time, waste gas is able to discharge from cylinder in time, bulldozer needs to improve powerful power mechanism in the course of the work, therefore, important to the sealing requirements of engine chamber, valve group mechanism is the bubble-tight parts for ensureing engine chamber, existing valve group mechanism, valve needs bear high temperature and impact frequently, easy wearing and tearing, need often to change, bothersome effort, and, existing airtight conduit is drum, not good with valve seat contacting point sealing, affect the tightness of engine chamber, thus the power affecting bulldozer provides.
Model utility content
The technical problem that the utility model solves is the valve group of existing bulldozer engine distribution, and valve needs bear high temperature and impact frequently, easily weares and teares, and needs often to change, bothersome effort, the problem that sealing is not good.Valve group mechanism for bulldozer engine distribution of the present utility model, the top of valve seat is cone shape, and the contacting point of valve guide bushing and valve seat is the inverted tubaeform shape matched with cone shape, improves sealability, valve stem adopts Silichrome Steel material to make, Wear-resistant, high-temperature resistant, long service life, without the need to frequent replacing, easy to use, structure is simple, easily realizes, has a good application prospect.
To achieve the above object, the technological scheme that adopts of the utility model is as follows:
A kind of valve group mechanism for bulldozer engine distribution, it is characterized in that: comprise mounting base, valve seat, valve stem, valve guide bushing, valve spring, jump ring, spring seat and lock banking stop, cavity is provided with in described mounting base, described valve seat is positioned at the bottom of cavity, described valve stem is arranged on directly over valve seat, described valve guide bushing is socketed on valve stem, the top of described valve seat is cone shape, the contacting point of described valve guide bushing and valve seat is the inverted tubaeform shape matched with cone shape, the first half of described valve guide bushing is nested in valve spring, described valve spring extends mounting base, the top of described valve spring is fixed on spring seat by jump ring, described spring seat is positioned at the top of valve stem, described lock banking stop is fixed on the top of spring seat, described lock banking stop is connected with air distribution cylinder lid.
Aforesaid a kind of valve group mechanism for bulldozer engine distribution, is characterized in that: the conical taper angle on described valve seat top is 45 °.
Aforesaid a kind of valve group mechanism for bulldozer engine distribution, is characterized in that: the chamber wall of described mounting base inner cavity is provided with one deck rubber lamella.
Aforesaid a kind of valve group mechanism for bulldozer engine distribution, is characterized in that: described valve stem adopts Silichrome Steel material to make.
Aforesaid a kind of valve group mechanism for bulldozer engine distribution, is characterized in that: described valve stem upper air bore dia is greater than exhaust port diameter.
Aforesaid a kind of valve group mechanism for bulldozer engine distribution, is characterized in that: the caliber of the described valve guide bushing first half is greater than the caliber of Lower Half.
The beneficial effects of the utility model are: the valve group mechanism for bulldozer engine distribution of the present utility model, the top of valve seat is cone shape, the contacting point of valve guide bushing and valve seat is the inverted tubaeform shape matched with cone shape, improve sealability, valve stem adopts Silichrome Steel material to make, Wear-resistant, high-temperature resistant, long service life, without the need to frequent replacing, easy to use, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the valve group mechanism for bulldozer engine distribution of the present utility model.
The implication marked in accompanying drawing is as follows:
1: mounting base; 2: valve seat; 3: valve stem; 4: valve guide bushing; 5: valve spring; 6: jump ring; 7: spring seat; 8: lock banking stop; 9: rubber lamella.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, a kind of valve group mechanism for bulldozer engine distribution, comprise mounting base 1, valve seat 2, valve stem 3, valve guide bushing 4, valve spring 5, jump ring 6, spring seat 7 and lock banking stop 8, cavity is provided with in described mounting base 1, valve seat 2 is positioned at the bottom of cavity, valve stem 3 is arranged on directly over valve seat 2, valve stem 3 upper air bore dia is greater than exhaust port diameter, when ensureing inflation, enter the gas flow of firing chamber, ensure Thorough combustion, valve guide bushing 4 is socketed on valve stem 3, the top of valve seat 2 is cone shape, valve guide bushing 4 is the inverted tubaeform shape matched with cone shape with the contacting point of valve seat 2, the tightness that valve guide bushing 4 contacts with valve seat 2 is high, improve sealability, the conical taper angle on valve seat 2 top is 45 °, the chamber wall of mounting base 1 inner cavity is provided with one deck rubber lamella 9, valve guide bushing 4 can be protected, extruding valve guide bushing 4, ensure the tightness be socketed with valve stem 3, prevent gas leakage, the first half of valve guide bushing 4 is nested in valve spring 5, described valve spring 5 extends mounting base 1, the top of valve spring 5 is fixed on spring seat 7 by jump ring 6, described spring seat 7 is positioned at the top of valve stem 3, lock banking stop 8 is fixed on the top of spring seat 7, lock banking stop 8 is connected with air distribution cylinder lid,
Described valve stem 3 adopts Silichrome Steel material to make, Wear-resistant, high-temperature resistant, long service life, without the need to frequent replacing, the caliber of valve guide bushing 4 first half is greater than the caliber of Lower Half, is convenient to fixedly mount valve spring 5, valve spring 5 provides restoring force, ensures that valve stem 3 is pressed on valve seat 2.
Valve group mechanism for bulldozer engine distribution of the present utility model, in working principle, valve guide bushing 4 ensures that valve 3 bar moves up and down along the axis of itself, realizes the inflation of valve stem 3, exhaust, ensures sealability.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. the valve group mechanism for bulldozer engine distribution, it is characterized in that: comprise mounting base (1), valve seat (2), valve stem (3), valve guide bushing (4), valve spring (5), jump ring (6), spring seat (7) and lock banking stop (8), described mounting base is provided with cavity in (1), described valve seat (2) is positioned at the bottom of cavity, described valve stem (3) is arranged on directly over valve seat (2), described valve guide bushing (4) is socketed on valve stem (3), the top of described valve seat (2) is cone shape, described valve guide bushing (4) is the inverted tubaeform shape matched with cone shape with the contacting point of valve seat (2), the first half of described valve guide bushing (4) is nested in valve spring (5), described valve spring (5) extends mounting base (1), the top of described valve spring (5) is fixed on spring seat (7) by jump ring (6), described spring seat (7) is positioned at the top of valve stem (3), described lock banking stop (8) is fixed on the top of spring seat (7), described lock banking stop (8) is connected with air distribution cylinder lid.
2. a kind of valve group mechanism for bulldozer engine distribution according to claim 1, is characterized in that: the conical taper angle on described valve seat (2) top is 45 °.
3. a kind of valve group mechanism for bulldozer engine distribution according to claim 1, is characterized in that: the chamber wall of described mounting base (1) inner cavity is provided with one deck rubber lamella (9).
4. a kind of valve group mechanism for bulldozer engine distribution according to claim 1, is characterized in that: described valve stem (3) adopts Silichrome Steel material to make.
5. a kind of valve group mechanism for bulldozer engine distribution according to claim 1, is characterized in that: described valve stem (3) upper air bore dia is greater than exhaust port diameter.
6. a kind of valve group mechanism for bulldozer engine distribution according to claim 1, is characterized in that: the caliber of described valve guide bushing (4) first half is greater than the caliber of Lower Half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220684.6U CN204691845U (en) | 2015-04-13 | 2015-04-13 | A kind of valve group mechanism for bulldozer engine distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220684.6U CN204691845U (en) | 2015-04-13 | 2015-04-13 | A kind of valve group mechanism for bulldozer engine distribution |
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| Publication Number | Publication Date |
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| CN204691845U true CN204691845U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520220684.6U Active CN204691845U (en) | 2015-04-13 | 2015-04-13 | A kind of valve group mechanism for bulldozer engine distribution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775868A (en) * | 2015-04-13 | 2015-07-15 | 苏州建鑫建设集团有限公司 | Air door group mechanism for bulldozer engine air distribution |
-
2015
- 2015-04-13 CN CN201520220684.6U patent/CN204691845U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775868A (en) * | 2015-04-13 | 2015-07-15 | 苏州建鑫建设集团有限公司 | Air door group mechanism for bulldozer engine air distribution |
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