CN203603998U - Engine valve rod - Google Patents
Engine valve rod Download PDFInfo
- Publication number
- CN203603998U CN203603998U CN201320737349.4U CN201320737349U CN203603998U CN 203603998 U CN203603998 U CN 203603998U CN 201320737349 U CN201320737349 U CN 201320737349U CN 203603998 U CN203603998 U CN 203603998U
- Authority
- CN
- China
- Prior art keywords
- rod
- valve
- valve rod
- end surface
- groove
- 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
Links
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910000531 Co alloy Inorganic materials 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 10
- 229910001347 Stellite Inorganic materials 0.000 description 9
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 7
- 238000010304 firing Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model provides an engine valve rod, and belongs to the technical field of engines. The engine valve rod solves the technical problem that the strength of the end portion of an existing engine valve rod is low. The engine valve rod comprises a rod body and a valve retainer which is arranged at the lower end of the rod body and can abut against the inner wall of an engine combustion chamber. The lower end of the rod body is fixedly connected with the valve retainer, a semi-spherical groove is formed in the upper end surface of the rod body, and an abrasion-resistant alloy layer is arranged in the groove in an overlay welding mode. The engine valve rod has the advantages of being high in strength of the end surface, long in service life and the like.
Description
Technical field
The utility model belongs to technical field of engines, relates to a kind of engine air valve rod.
Background technique
Valve is the constituent element of firing chamber, forms the passage of gas into and out of firing chamber again with cylinder body.Valve will bear washing away and corrosive action of great alternation and impulsive load and high temperature, high-speed fuel gas at work, and working environment is very severe: one, directly contact the hot environment of cylinder combustion burning gas, be heated serious, and heat radiation difficulty; Head is passed to cylinder head by valve seat by heat through the moment of taking a seat; Valve stem is by conduit a part of heat that sheds.Especially exhaust valve is subject to washing away of high-temp waste gas, and operating temperature can reach 800-1100 ℃.Two, due to the effect of valve spring, the valve head clan seat power that is hit.Three, the lubricating condition of valve is very poor, exists the contradiction of valve lubricated and cylinder oil-feed and conduit gas leakage.Four, it is operated in the environment of aggressive medium and can be corroded.It is whether reasonable not only relevant with the technical-economic index of motor, also closely related with the working life of valve and the reliability of complete machine that valve designs.
Engine valve comprises intake valve and exhaust valve, its structure comprises the valve retainer of valve stem and valve stem lower end, valve retainer is in firing chamber, for closing and open air inlet or the relief opening of firing chamber, the upper end of valve stem and a locker are fixed, locker is for installing the spring-leaf retainer (for the reset of valve) of valve spring, and valve stem is for the guiding of valve retainer.
Stellite alloy is the cemented carbide of a kind of ability all kinds abrasion and corrosion and high temperature oxidation, translates into stellite in China, i.e. usually said cobalt base alloy, and Stellite alloy is invented in 1907 by American Elwood Hayness.Stellite alloy is using cobalt as main component, contains the alloying elements such as a considerable amount of nickel, chromium, tungsten and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, yet contains once in a while a class alloy of iron.According to composition difference in alloy, they can make welding wire, and powder is for hard-face overlaying welding, and the techniques such as thermal spraying, surfacing, also can make forge piece and metallic sintered products; Stellite alloy has following performance: 1, excellent weldability, is applicable to built-up welding; 2, high strength, good fatigue resistance, good heat resistent property and corrosion resistance, particularly has higher intensity during higher than 980 ℃ in temperature, better thermal fatigue resistance, corrosion and heat resistant and wear-corrosion resistance meets the demand of engine valve working environment very much.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for existing technology, and a kind of engine air valve rod is provided, and technical problem to be solved in the utility model is how to improve the intensity of valve end.
The purpose of this utility model can realize by following technical proposal: a kind of engine air valve rod, comprise the body of rod and be positioned at body of rod lower end and can with engine combustion chamber interior walls against valve retainer, lower end and the valve retainer of the described body of rod are connected, it is characterized in that, the upper-end surface of the described body of rod is provided with a hemispherical groove, and in described groove, heap is welded with wear-resistant alloy layer.
Working principle of the present utility model is: due to the body of rod move up and down frequency generally all several thousand times per minute more than, the upper-end surface of the body of rod is high-frequency clashes into engine rocker, make body of rod upper-end surface serious wear, and due to the existence of valve clearance, the body of rod and the collision of rocking arm belong to and contact, wearing and tearing to central position, body of rod upper-end surface are more serious, whether valve clearance directly affects valve-closing tight, and valve-closing time is had a great impact, traditional valve stem body of rod upper-end surface intensity is poor, serious wear, need frequent valve gap adjustment, very trouble, have a strong impact on the performance of motor, the body of rod upper end surface of this valve stem is provided with a hemispherical groove, in groove, heap is welded with wear-resistant alloy layer, can make up the poor problem of traditional valve stem body of rod upper-end surface intensity, can improve stability and the combination property of motor.
In above-mentioned a kind of engine air valve rod, on the described body of rod, offer annular groove.This annular groove is located at the spring seat on valve stem for fixed cover, is provided with a Returnning spring on spring seat, and in the time that rocking arm leaves the upper-end surface of the body of rod, valve stem automatically resets.
In above-mentioned a kind of engine air valve rod, the radius of described groove is 1.5mm～2.5mm.The diameter of body of rod upper-end surface is generally between 3.5mm～6mm, and the diameter of groove is slightly less than the diameter of body of rod upper-end surface, can make wear-resistant alloy layer weld more firmly.
In above-mentioned a kind of engine air valve rod, the described body of rod and valve retainer are made one.Can strengthen the bulk strength of this valve stem, and be easy to manufacture and produce.
In above-mentioned a kind of engine air valve rod, described wear-resistant alloy layer is cobalt alloy or zinc base alloy.As preferably, the cobalt alloy in this programme is stellite, and stellite has excellent weldability, is applicable to built-up welding; And its high strength, there is good fatigue resistance, good heat resistent property and corrosion resistance, particularly have higher intensity during higher than 980 ℃ in temperature, better thermal fatigue resistance, corrosion and heat resistant and wear-corrosion resistance meets the demand of engine valve working environment very much; Zinc base alloy is the alloy that adds other element compositions take zinc as base, and the alloying element often adding has aluminium, copper, magnesium, cadmium, lead, titanium etc.Zinc base alloy fusing point is low, good fluidity, and easily melting welding, can meet the demand of the independent anti-friction wear-resistant part service condition such as bearing shell, valve stem head.
Compared with prior art, the utlity model has following advantage:
1, on the upper-end surface of the valve stem body of rod, heap is welded with wear-resistant alloy layer, can be good at preventing from waving while shock with the body of rod upper-end surface valve clearance is changed.
2, the groove radius on this valve stem is 1.5mm～2.5mm, and the diameter of body of rod upper-end surface is generally between 3.5mm～6mm, and the diameter of groove is slightly less than the diameter of body of rod upper-end surface, can make wear-resistant alloy layer weld more firmly
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this valve stem.
Fig. 2 is the enlarged view of local A in Fig. 1.
In figure, 1, the body of rod; 2, valve retainer; 3, groove; 4, wear-resistant alloy layer; 5, annular groove.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, a kind of engine valve 2 bars, comprise the body of rod 1 and be positioned at the body of rod 1 lower end and can with engine combustion chamber interior walls against valve 2 coil, the lower end of the body of rod 1 is coiled and is connected with valve 2, the upper-end surface of the body of rod 1 is provided with a hemispherical groove 3, the interior heap of groove 3 is welded with wear-resistant alloy layer 4, wear-resistant alloy layer 4 is cobalt alloy or zinc base alloy, and as preferably, this wear-resistant alloy layer 4 is stellite, stellite has excellent weldability, is applicable to built-up welding; And its high strength, there is good fatigue resistance, good heat resistent property and corrosion resistance, particularly have higher intensity during higher than 980 ℃ in temperature, better thermal fatigue resistance, corrosion and heat resistant and wear-corrosion resistance meets the demand of engine valve 2 working environments very much; Zinc base alloy is the alloy that adds other element compositions take zinc as base, and the alloying element often adding has aluminium, copper, magnesium, cadmium, lead, titanium etc.Zinc base alloy fusing point is low, good fluidity, and easily melting welding, can meet the demand of the independent anti-friction wear-resistant part service condition such as bearing shell, valve stem head.
On the body of rod 1, offer annular groove 5, this annular groove 5 is located at the spring seat on valve 2 bars for fixed cover, on spring seat, be provided with a Returnning spring, in the time that rocking arm leaves the upper-end surface of the body of rod 1, valve 2 bars automatically reset, the radius of groove 3 is 1.5mm～2.5mm, the diameter of the body of rod 1 upper-end surface is generally between 3.5mm～6mm, the diameter of groove 3 is slightly less than the diameter of the body of rod 1 upper-end surface, can make wear-resistant alloy layer 4 weld more firmly, the body of rod 1 and valve 2 dishes are made one, can strengthen the bulk strength of this valve 2 bars, and are easy to manufacture and produce.
Working principle of the present utility model is: due to the body of rod 1 move up and down frequency generally all several thousand times per minute more than, the upper-end surface of the body of rod 1 is high-frequency clashes into engine rocker, make the body of rod 1 upper-end surface serious wear, and due to the existence in valve 2 gaps, the body of rod 1 and the collision of rocking arm belong to and contact, wearing and tearing to the body of rod 1 central position, upper-end surface are more serious, whether valve 2 gaps directly affect valve 2 and close tight, and 2 shut-in times of valve are had a great impact, traditional valve 2 club shaft 1 upper-end surface intensity are poor, serious wear, need often to regulate valve 2 gaps, very trouble, have a strong impact on the performance of motor, the body of rod 1 upper end surface of this valve 2 bars is provided with a hemispherical groove 3, the interior heap of groove 3 is welded with wear-resistant alloy layer 4, can make up the poor problem of traditional valve 2 club shaft 1 upper-end surface intensity, can improve stability and the combination property of motor.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. an engine air valve rod, comprise the body of rod (1) and be positioned at the body of rod (1) lower end and can with engine combustion chamber interior walls against valve retainer (2), the lower end of the described body of rod (1) and valve retainer (2) are connected, it is characterized in that, the upper-end surface of the described body of rod (1) is provided with a hemispherical groove (3), and in described groove (3), heap is welded with wear-resistant alloy layer (4).
2. a kind of engine air valve rod according to claim 1, is characterized in that, on the described body of rod (1), offers annular groove (5).
3. a kind of engine air valve rod according to claim 1 and 2, is characterized in that, the radius of described groove (3) is 1.5mm～2.5mm.
4. a kind of engine air valve rod according to claim 1 and 2, is characterized in that, the described body of rod (1) and valve retainer (2) are made one.
5. a kind of engine air valve rod according to claim 1 and 2, is characterized in that, described wear-resistant alloy layer (4) is cobalt alloy or zinc base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737349.4U CN203603998U (en) | 2013-11-19 | 2013-11-19 | Engine valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737349.4U CN203603998U (en) | 2013-11-19 | 2013-11-19 | Engine valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603998U true CN203603998U (en) | 2014-05-21 |
Family
ID=50716675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320737349.4U Expired - Fee Related CN203603998U (en) | 2013-11-19 | 2013-11-19 | Engine valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089349A (en) * | 2016-07-29 | 2016-11-09 | 中国北方发动机研究所(天津) | A kind of electromotor light titanium alloy material valve |
| CN113606010A (en) * | 2021-08-26 | 2021-11-05 | 重庆宗申发动机制造有限公司 | Fuel engine valve |
-
2013
- 2013-11-19 CN CN201320737349.4U patent/CN203603998U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089349A (en) * | 2016-07-29 | 2016-11-09 | 中国北方发动机研究所(天津) | A kind of electromotor light titanium alloy material valve |
| CN113606010A (en) * | 2021-08-26 | 2021-11-05 | 重庆宗申发动机制造有限公司 | Fuel engine valve |
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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 |
Granted publication date: 20140521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |