CN208294582U - A kind of engine prop column and valve actuating mechanism - Google Patents
A kind of engine prop column and valve actuating mechanism Download PDFInfo
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- CN208294582U CN208294582U CN201820659684.XU CN201820659684U CN208294582U CN 208294582 U CN208294582 U CN 208294582U CN 201820659684 U CN201820659684 U CN 201820659684U CN 208294582 U CN208294582 U CN 208294582U
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- oil
- tappet
- cam
- hole
- engine
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Abstract
The utility model belongs to the technical field of engine, discloses a kind of engine prop column and valve actuating mechanism.The engine prop column includes tappet ontology, the bottom surface energy and cam contact of the tappet ontology, the tappet body interior is to obliquely offering at least two oil-through-holes between the bottom surface, in described this body running of tappet, at least one described oil-through-hole is against the cam oil spout.The utility model is by opening up at least two oil-through-holes in tappet body interior, and make in this body running of tappet, at least one oil-through-hole is against cam oil spout, and then can guarantee to obtain good lubrication between tappet bottom surface and cam always, to solve the problems, such as that dry friction risk easily occur in existing tappet and cam.
Description
Technical field
The utility model relates to the technical field of engine more particularly to a kind of engine prop columns and valve actuating mechanism.
Background technique
Tappet is a key part in engine valve actuating mechanism, the function and working principle of tappet are as follows: below tappet
With cam contact, pumping for tappet is converted for the molded line profile of cam by the rotation of camshaft, passes through inserting
Push rod in tappet inner cavity, which pumps this, passes to rocker arm, eventually by rocker arm realize inlet and outlet door unlatching and
Closing motion.
Tappet-cam friction pair is one of friction pair mostly important in diesel engine, once insufficient lubrication, friction pair
Inordinate wear is likely to result in the catastrophe failures such as valve stroke is out of control or even valve can not be opened, and diesel engine is unable to run.
In order to reduce the weight of valve actuating mechanism movement parts, production cost is reduced, gradually uses disc type tappet on engine.But
It is because disk is blocked, machine oil is difficult to flow to the contact surface of tappet and cam, leads to cam (especially peach tip part) and endures
The poor lubrication of column, therefore there is the risk of dry friction between the two.
It would therefore be highly desirable to need a kind of new engine tappet to solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of engine prop column and valve actuating mechanisms, to solve existing tappet and cam
Easily there is the problem of dry friction risk.
For this purpose, the utility model uses following technical scheme:
A kind of engine prop column, including tappet ontology, the bottom surface energy and cam contact of the tappet ontology, the tappet sheet
Internal portion is to obliquely offering at least two oil-through-holes between the bottom surface, in described this body running of tappet, at least one
A oil-through-hole is against the cam oil spout.
Preferably, being equipped with the inner cavity for accommodating push rod in the tappet ontology, the bottom of the inner cavity is equipped with Oil Guide
Hole, the oil guiding hole are connected to the oil-through-hole.
Preferably, the first oil inlet passage is offered on the tappet ontology, first oil inlet passage and the Oil Guide
Hole connection.
Preferably, the oil-through-hole is three, and it is distributed in the tappet ontology.
Preferably, the cross sectional shape of the oil-through-hole is circle.
Preferably, the diameter of the oil-through-hole is 1~3mm.
Preferably, the oil-through-hole is formed by laser or tool sharpening.
Preferably, the bottom surface of the tappet ontology is contacted with cam for line.
A kind of valve actuating mechanism, including above-mentioned engine prop column.
Preferably, further including cam and the camshaft for driving the cam rotation, the cam axle, which is set to, to be started
On the body of machine.
Preferably, further including push rod, the second oil inlet passage, second oil inlet passage and the Oil Guide are equipped in push rod
Hole connection.
The utility model has the beneficial effects that
The utility model is made by opening up at least two oil-through-holes in tappet body interior in this body running of tappet
When, at least one oil-through-hole can guarantee to obtain always between tappet bottom surface and cam good against cam oil spout
Lubrication, to solve the problems, such as that dry friction risk easily occur in existing tappet and cam.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of engine prop column provided by the utility model；
Fig. 2 is the cross-sectional view that the first oil inlet passage is arranged on tappet ontology in Fig. 1；
Fig. 3 is that the second oil inlet passage and the main view with cam engagement is arranged in push rod in Fig. 1；
Fig. 4 is that the second oil inlet passage and the side view with cam engagement is arranged in push rod in Fig. 1.
In figure:
1, tappet ontology；11, inner cavity；12, oil-through-hole；13, oil guiding hole；14, the first oil inlet passage；
2, camshaft；21, cam；
3, push rod；31, the second oil inlet passage.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of engine prop column provided by the utility model, which includes tappet ontology 1, very
The bottom surface of column ontology 1 is contacted with cam 21 (referring to Fig. 3 and Fig. 4), inside tappet ontology 1 to obliquely offered between bottom surface to
Few two oil-through-holes 12, when tappet ontology 1 works, at least one oil-through-hole 12 can guarantee in this way against 21 oil spout of cam
Good lubrication is obtained always between the bottom surface of tappet ontology 1 and cam 21 (especially peach tip part), to solve existing
Easily there is the problem of dry friction risk in tappet and cam 21.
Specifically, the inner cavity 11 for accommodating push rod 3 (referring to Fig. 3 and Fig. 4), the bottom of inner cavity 11 are equipped with inside tappet ontology 1
Equipped with oil guiding hole 13, oil guiding hole 13 is connected to oil-through-hole 12, which, which can not only realize, is delivered to logical oil for lubricating oil
In hole 12, moreover it is possible to guarantee that the lubricating oil of oil guiding hole 13 is lubricated the contact surface of push rod 3 and inner cavity 11, to reduce by 3 He of push rod
Friction between inner cavity 11.
As shown in Fig. 2, the mode into lubricating oil of engine prop column can be by opened up on tappet ontology 1 first
Oil inlet passage 14, the first oil inlet passage 14 are connected to oil guiding hole 13, it should be noted that the oil inlet of the first oil inlet passage 14 is wanted
Higher than oil guiding hole 13, to facilitate oil inlet.
Specifically, the bottom surface of tappet ontology 1 is contacted with cam 21 for line, when tappet ontology 1 and the work of cam 21, cam
21 move in a circle, and tappet ontology 1, which is done, to be rotated and move up and down, and oil-through-hole 12 does not contact always with cam 21, therefore only
Guarantee in the course of work, oil-through-hole 12 can be able to achieve to tappet-cam friction pair lubrication against 21 oil spout of cam.By
Above-mentioned analysis is also possible to three or more, while oil-through-hole 12 is distributed in tappet it is found that the quantity of oil-through-hole 12 is preferably three
In ontology 1, which can guarantee that at least one oil-through-hole 12, and then can against cam 21 or camshaft 2 always
Guarantee to obtain good lubrication always between the bottom surface and cam 21 (especially peach tip part) of tappet ontology 1, and can take away convex
The heat of wheel 21 and tappet ontology 1, substantially reduces friction between the two, so as to improve tappet-cam friction pair building ring
Reliability is improved in border.
Specifically, the cross sectional shape of oil-through-hole 12 is circle, is also possible to other shapes, such as rectangular, triangle or ellipse
Shape, it is preferably circular in present embodiment.When the cross sectional shape of oil-through-hole 12 is round, the diameter of oil-through-hole 12 is 1
~3mm, by adjusting the specific setting value of 12 diameter of oil-through-hole, to adjust between 1 bottom surface of cam 21 and tappet ontology
Lubricants capacity.
Specifically, oil-through-hole 12 is formed by laser or tool sharpening, preferably by laser machining.
The utility model additionally provides a kind of valve actuating mechanism, which includes above-mentioned engine prop column, further includes
Cam 21 and the camshaft 2 rotated with moving cam 21, the rotation of camshaft 2 are set on the body of engine (not shown).It is logical
The frictional force reduced between 1 bottom surface of tappet ontology and cam 21 is crossed, is further ensured that the valve stroke of engine, and can effectively drop
Low engine fuel consumption, improves the economy of engine.
As shown in Figures 3 and 4, which further includes push rod 3, and the mode into lubricating oil of engine prop column can also be
Second oil inlet passage 31 is set in push rod 3, the second oil inlet passage 31 is connected to oil guiding hole 13, the second oil inlet passage 31 by with
The oil inlet passage connection being arranged in the rocker arm (not shown) that push rod 3 connects, not only acts as the contact to push rod 3 and inner cavity 11
Face is lubricated, additionally it is possible to be cooled down using lubricating oil to push rod 3 and rocker arm.
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For the ordinary skill user of fields, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (10)
1. the bottom surface of a kind of engine prop column, including tappet ontology (1), the tappet ontology (1) can be contacted with cam (21),
It is characterized in that, the tappet ontology (1) is internal at least two oil-through-holes (12) are obliquely offered between the bottom surface, in institute
When stating tappet ontology (1) work, the opposite cam (21) oil spout of at least one described oil-through-hole (12).
2. engine prop column according to claim 1, which is characterized in that be equipped in the tappet ontology (1) for accommodating
The bottom of the inner cavity (11) of push rod (3), the inner cavity (11) is equipped with oil guiding hole (13), the oil guiding hole (13) and the oil-through-hole
(12) it is connected to.
3. engine prop column according to claim 2, which is characterized in that offered on the tappet ontology (1) first into
Oily channel (14), first oil inlet passage (14) are connected to the oil guiding hole (13).
4. engine prop column according to claim 2, which is characterized in that the oil-through-hole (12) is three, and it is uniformly distributed
In the tappet ontology (1).
5. engine prop column according to claim 2, which is characterized in that the cross sectional shape of the oil-through-hole (12) is circle
Shape.
6. engine prop column according to claim 5, which is characterized in that the diameter of the oil-through-hole (12) is 1~3mm.
7. engine prop column according to claim 2, which is characterized in that the oil-through-hole (12) is by laser or tool sharpening
It forms.
8. a kind of valve actuating mechanism, which is characterized in that including the engine prop column as described in any one of claim 2~7.
9. valve actuating mechanism according to claim 8, which is characterized in that further include cam (21) and the drive cam (21)
The camshaft (2) of rotation, camshaft (2) rotation are set on the body of engine.
10. valve actuating mechanism according to claim 8, which is characterized in that further include push rod (3), be equipped in the push rod (3)
Second oil inlet passage (31), second oil inlet passage (31) are connected to the oil guiding hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820659684.XU CN208294582U (en) | 2018-05-04 | 2018-05-04 | A kind of engine prop column and valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820659684.XU CN208294582U (en) | 2018-05-04 | 2018-05-04 | A kind of engine prop column and valve actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208294582U true CN208294582U (en) | 2018-12-28 |
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ID=64704142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820659684.XU Active CN208294582U (en) | 2018-05-04 | 2018-05-04 | A kind of engine prop column and valve actuating mechanism |
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| CN (1) | CN208294582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847994A (en) * | 2019-11-27 | 2020-02-28 | 重庆隆鑫机车有限公司 | Tappet with oil guide function, valve actuating mechanism and engine |
-
2018
- 2018-05-04 CN CN201820659684.XU patent/CN208294582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847994A (en) * | 2019-11-27 | 2020-02-28 | 重庆隆鑫机车有限公司 | Tappet with oil guide function, valve actuating mechanism and engine |
| CN110847994B (en) * | 2019-11-27 | 2021-09-28 | 重庆隆鑫机车有限公司 | Tappet with oil guide function, valve actuating mechanism and engine |
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