CN206246165U - A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment - Google Patents
A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment Download PDFInfo
- Publication number
- CN206246165U CN206246165U CN201621344310.6U CN201621344310U CN206246165U CN 206246165 U CN206246165 U CN 206246165U CN 201621344310 U CN201621344310 U CN 201621344310U CN 206246165 U CN206246165 U CN 206246165U
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- CN
- China
- Prior art keywords
- plunger
- tappet
- valve
- tappet body
- push rod
- 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.)
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Abstract
The utility model discloses a kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment, including tappet body, plunger, push rod, ball seat, check valve and plunger return spring, the very column body is provided with plunger, plunger is axially moved with respect to tappet body, and gap is left between plunger and tappet body, offer duct on tappet body and plunger sidewall；The plunger top is fixedly connected with the ball seat, and ball seat upside middle is fixedly connected with push rod, and push rod top offsets with valve；The plunger lower end offers hydraulic oil channel, and check valve is provided with hydraulic oil channel.Compared with prior art, the beneficial effects of the utility model are by the oil liquid leakage and supplement in high-voltage oil cavity, constantly automatically adjust the active length of tappet, so as to keep valve operation normal and the presence very close to each other of whole mechanism, the impact between part and noise are reduced, the disadvantage of old money engine valve clearance is eliminated.
Description
Technical field
The utility model is related to hydraulic tappet technical field, and in particular to a kind of for conditions of valve clearance ofthe diesel adjustment
Hydraulic tappet.
Background technology
In order to ensure that valve-closing is tight, in valve rod end and valve actuation part（Rocking arm, tappet or cam）Between leave
Appropriate gap, referred to as valve clearance.Valve clearance is smaller in hot car, in cold car than larger, because engine
During operation, valve stem expands elongation because temperature is raised, and causes gap shrinks.If valve clearance adjustment is improper will to make engine
Operation is abnormal, and crossing conference influences the open amount of valve, and valve stroke is reduced and caused into unsaturated vapor, is vented not thorough；Too small meeting
Cause valve-closing not cause gas leakage sternly, cause power dropping.In order to avoid valve clearance adjusts the improper trouble for causing, typically
The hydraulic tappet that can voluntarily adjust valve clearance is all used in high speed engine.One end of tappet and cam contact, the other end with
Valve contacts, its effect is that the thrust of cam is transmitted into valve.Tappet one end on old-fashioned engine equipped with adjusting screw and
Locking nut, for adjusting valve clearance, and hydraulic tappet eliminates adjusting screw and locking nut, is adjusted with liquid and instead of
The effect of these hard parts.Hydraulic tappet working effect of the prior art is poor, to the gap Adjustment effect of valve also compared with
Difference.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment, to solve
The problem proposed in certainly above-mentioned background technology.
To achieve the above object, the utility model provides following technical scheme：
A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment, including tappet body, plunger, push rod, ball seat, list
To valve and plunger return spring, the very column body is provided with plunger, and plunger is axially moved with respect to tappet body, and plunger and tappet
Gap is left between body, duct is offered on tappet body and plunger sidewall；The plunger top is fixedly connected with the ball seat,
Ball seat upside middle is fixedly connected with push rod, and push rod top offsets with valve；The plunger lower end offers hydraulic oil channel,
Check valve is provided with hydraulic oil channel, is high-voltage oil cavity between plunger bottom and tappet body bottom, in plunger bottom and tappet body
Bottom is connected by plunger return spring.
As further program of the utility model：The check valve is fixedly installed on plunger base by butterfly spring.
As the utility model further scheme：Gap between the plunger and tappet body is 0.1mm-0.4mm.
As the utility model further scheme：The channel diameter opened up on duct and plunger on the tappet body
It is equal.
Compared with prior art, the beneficial effects of the utility model be by the oil liquid leakage and supplement in high-voltage oil cavity,
The active length of tappet constantly is automatically adjusted, so as to keep valve operation normal and the presence very close to each other of whole mechanism, is reduced
Impact and noise between part, eliminate the disadvantage of old money engine valve clearance.Meanwhile, can be by using hydraulic tappet
Camshaft profile is made emptier, makes valve opening and closes faster, more conforms to the requirement of modern high-speed engines.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure：1- tappets body, 2- plungers, 3- ball seats, 4- push rods, 5- ducts, 6- hydraulic oil channels, 7- butterfly springs, 8-
Check valve, 9- plunger returns spring, 10- cams, 11- high-voltage oil cavities, 12- gaps.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1 is referred to, in the utility model embodiment, a kind of hydraulic pressure for conditions of valve clearance ofthe diesel adjustment is endured
Post, including tappet body 1, plunger 2, push rod 4, ball seat 3, check valve 8 and plunger return spring 9, post is provided with inside the tappet body 1
Plug 2, plunger 2 is axially moved with respect to tappet body 1, and gap 12 is left between plunger 2 and tappet body 1, tappet body 1 and the side of plunger 2
Duct 5 is offered on wall；The top of the plunger 2 is fixedly connected with the ball seat 3, and the upside middle of ball seat 3 is fixedly connected with
Push rod 4, the top of push rod 4 offsets with valve；The lower end of the plunger 2 offers hydraulic oil channel 6, and list is provided with hydraulic oil channel 6
It is high-voltage oil cavity 11 to valve 8, between the bottom of plunger 2 and the bottom of tappet body 1, the bottom of plunger 2 passes through plunger with the inner bottom part of tappet body 1
The spring of reset bullet 9 is connected.
The check valve 8 is fixedly installed on the bottom of plunger 2 by butterfly spring 7.
Gap 12 between the plunger 2 and tappet body 1 is 0.1mm-0.4mm.
The equal diameters of duct 5 opened up on duct 5 and plunger 2 on the tappet body 1.
Operation principle of the present utility model is：When engine works, work as valve-closing, machine oil is through tappet body 1 and plunger 2
Duct 5 enters inside plunger 2, pushes check valve 8 open and directly enters high-voltage oil cavity 11, and plunger 2 is just in the presence of the oil pressure of high-voltage oil cavity 11
Rise, compress valve, now the climbing power of plunger 2 is not enough to overcome the tension force of valve spring, and valve will not be opened and only be
Eliminate the gap in whole valve mechanism；Now high-voltage oil cavity 11 has been filled with oil, and check valve 8 is closed in the presence of oil pressure,
Oil circuit is cut off；When cam 10 goes to working face, tappet rises, and valve spring tension force acts on plunger by valve and push rod 4
On 2, but now check valve 8 is turned off making fluid to overflow, and the Incoercibility that fluid has is so that hydraulic tappet is as one
Individual entirety equally promotes valve opening；In the process, due in high-voltage oil cavity 11 oil pressure it is very high, have a little fluid pass through very
Let out and make hydraulic tappet active length " shortening " at cylinder 1 and the gap 12 of plunger 2, when cam 10 turns over working face
Hydraulic tappet declines, and valve-closing, the oil pressure in high-voltage oil cavity 11 also declines therewith, and then the machine oil of main oil gallery is pushed open once more
In the injection high-voltage oil cavity 11 of check valve 8, fluid is supplemented, more than repetitive cycling acted.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (4)
1. it is a kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment, including tappet body, plunger, push rod, ball seat, unidirectional
Valve and plunger return spring, it is characterised in that the very column body is provided with plunger, and plunger is axially moved with respect to tappet body, and
Gap is left between plunger and tappet body, duct is offered on tappet body and plunger sidewall；The plunger top is fixedly connected
There is the ball seat, ball seat upside middle is fixedly connected with push rod, and push rod top offsets with valve；The plunger lower end offers
Hydraulic oil channel, is provided with check valve at hydraulic oil channel, be high-voltage oil cavity, plunger bottom between plunger bottom and tappet body bottom
It is connected by plunger return spring with bottom in tappet body.
2. it is according to claim 1 it is a kind of for conditions of valve clearance ofthe diesel adjustment hydraulic tappet, it is characterised in that
The check valve is fixedly installed on plunger base by butterfly spring.
3. it is according to claim 1 it is a kind of for conditions of valve clearance ofthe diesel adjustment hydraulic tappet, it is characterised in that
Gap between the plunger and tappet body is 0.1mm-0.4mm.
4. it is according to claim 1 it is a kind of for conditions of valve clearance ofthe diesel adjustment hydraulic tappet, it is characterised in that
The channel diameter opened up on duct and plunger on the tappet body is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344310.6U CN206246165U (en) | 2016-12-08 | 2016-12-08 | A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344310.6U CN206246165U (en) | 2016-12-08 | 2016-12-08 | A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246165U true CN206246165U (en) | 2017-06-13 |
Family
ID=59005800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621344310.6U Expired - Fee Related CN206246165U (en) | 2016-12-08 | 2016-12-08 | A kind of hydraulic tappet for conditions of valve clearance ofthe diesel adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246165U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451448A (en) * | 2018-05-07 | 2019-11-15 | 成都安好精工机械股份有限公司 | A kind of automatic oil supply machine of hydraulic tappet |
| CN111472859A (en) * | 2020-05-26 | 2020-07-31 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN111894694A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Lift-controllable hydraulic tappet system |
| CN112554988A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Engine active multi-stage variable valve lift hydraulic tappet |
| CN112554987A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Stepless variable valve lift hydraulic tappet assembly |
| CN111472859B (en) * | 2020-05-26 | 2024-05-03 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
-
2016
- 2016-12-08 CN CN201621344310.6U patent/CN206246165U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451448A (en) * | 2018-05-07 | 2019-11-15 | 成都安好精工机械股份有限公司 | A kind of automatic oil supply machine of hydraulic tappet |
| CN111472859A (en) * | 2020-05-26 | 2020-07-31 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN111472859B (en) * | 2020-05-26 | 2024-05-03 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN111894694A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Lift-controllable hydraulic tappet system |
| CN112554988A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Engine active multi-stage variable valve lift hydraulic tappet |
| CN112554987A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Stepless variable valve lift hydraulic tappet assembly |
| CN112554988B (en) * | 2020-12-10 | 2023-11-10 | 伊萨智能电梯有限公司 | Engine active multi-stage variable valve lift hydraulic tappet |
| CN112554987B (en) * | 2020-12-10 | 2023-12-12 | 安徽东晟汽车部件科技有限公司 | Stepless variable valve lift hydraulic tappet assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170613 Termination date: 20191208 |