CN209444384U - Full floating roller tappet - Google Patents
Full floating roller tappet Download PDFInfo
- Publication number
- CN209444384U CN209444384U CN201822206458.9U CN201822206458U CN209444384U CN 209444384 U CN209444384 U CN 209444384U CN 201822206458 U CN201822206458 U CN 201822206458U CN 209444384 U CN209444384 U CN 209444384U
- Authority
- CN
- China
- Prior art keywords
- pin shaft
- tappet
- guide
- roller
- idler wheel
- 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.)
- Active
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a kind of full floating roller tappets, including tappet body and the roll wheel assembly being installed in tappet body bottom roller slot；The cell wall of roller groove is provided with pin shaft hole, and cell wall oil groove, the internal galleries for being internally provided with connection tappet intracoelomic cavity and roller groove of tappet body are provided on the inside of the cell wall of roller groove；Roll wheel assembly includes being provided with axial limit structure with the pin shaft, the guide that is sheathed on outside pin shaft and the idler wheel being sheathed on outside guide, the both ends of the surface of idler wheel of pin shaft hole interference installation, between pin shaft and guide, between guide and idler wheel be to be slidably matched；Pin shaft uses low-alloy steel material, and guide uses powder metallurgy material；The full floating roller tappet of the utility model improves the secondary greasy property of roller-coaster friction, improves tappet service life, improve engine reliability；And the manufacturing cost of roller tappet is reduced, the feature of environmental protection is good.
Description
Technical field
The utility model relates to engine component technical fields, and in particular to a kind of full floating roller tappet.
Background technique
Tappet is the important composition component in engine valve actuating mechanism, and driven member of the tappet as cam bears camshaft
The lateral force applied when rotation, effect is that the thrust of cam is passed to push rod or valve stem.Tappet is divided into common tappet
And hydraulic tappet, common tappet are divided into flat tappet and roller tappet.It wherein, is rolling friction between roller tappet and cam,
The more flat tappet of bearing capacity is high, is conducive to reduce tappet, cam wear, and application on the engine is further extensive.
Existing roller tappet includes tappet body, idler wheel and pin shaft, and idler wheel is installed in the roller groove of tappet body bottom, pin
It is interference fit between axis and tappet body, idler wheel is rotated around pin shaft and its cylinder and cam contact, tappet intracoelomic cavity are equipped with back
Oilhole falls cylinder cap oil return by oil return hole, to the sliding friction pair of cam and idler wheel contact surface and idler wheel and pin shaft into
Row lubrication.The roller tappet of the prior art has the disadvantage in that
(1) idler wheel is rotated around pin shaft, in axis direction without thrust, leads to idler wheel and tappet body bottom roller slot two sidewalls
Distance differs larger, and then the splashing for influencing sliding pair two sides lubricating oil between idler wheel and pin shaft is uneven, under extreme case, lubrication
Oil is fallen along side gap, and the friction pair is made to cannot get effectively lubricating, is eventually led to idler wheel and is unable to normal rotation, exacerbates
Abrasion between idler wheel and cam and between idler wheel and pin shaft influences the service life of each component.
It (2) is mostly the materials such as bearing bronzes, brass or Pot metal for installing the pin shaft of idler wheel, although being good
Antifriction material, but ordinary metallic material is more expensive than in price, and lead can be precipitated in Pot metal at high temperature, the feature of environmental protection is poor.
Summary of the invention
In view of this, improving rolling the technical problem to be solved by the utility model is to provide a kind of full floating roller tappet
The greasy property of skidding dynamic friction pair improves tappet service life, improves engine reliability.
In order to solve the above technical problems, the technical solution of the utility model is: full floating roller tappet, the full floating rolling
Taking turns tappet includes:
Tappet body, one end of the tappet body are provided with roller groove, and the cell wall of the roller groove is provided with and the idler wheel
The pin shaft hole that slot is connected；
Roll wheel assembly, the roll wheel assembly include idler wheel and pin shaft, and the idler wheel is located in the roller groove and is arranged
In outside the pin shaft, the pin shaft is installed on the pin shaft hole；
Guide is also arranged with outside the pin shaft, the guide positioned at the pin shaft and the idler wheel between, the pin shaft and
Between the guide, between the guide and the idler wheel be to be slidably matched.
Since the full floating roller tappet of the utility model includes tappet body and the idler wheel that is installed in tappet body roller groove
Component, roll wheel assembly include pin shaft, the guide being sheathed on pin shaft and the idler wheel being sheathed on guide, and pin shaft and guide it
Between, between guide and idler wheel be to be slidably matched；Lubricating oil can enter between pin shaft and guide and between guide and idler wheel,
Make pin shaft, guide, full floating connection formed by lubricating oil between idler wheel, good lubrication is carried out to each component, improves lubrication
Performance, guarantees idler wheel normal rotation, and pin shaft along the circumferential direction even wearing improves tappet service life.
It is that many places of the utility model full floating roller tappet are further improved below:
Wherein, cell wall oil groove is provided on the inside of the cell wall of the roller groove.
Wherein, the cell wall oil groove run through the pin shaft hole inner end, the setting direction of the cell wall oil groove with it is described
The axial direction of tappet body is consistent.It may insure that the lubricating oil in cell wall oil groove enters between pin shaft and guide, the two carried out good
Lubrication.
Wherein, the internal galleries for being internally provided with connection tappet intracoelomic cavity and the roller groove of the tappet body.It comes from
The lubricating oil of internal galleries corresponds to idler wheel and falls, and enters between idler wheel and guide and between guide and pin shaft from end, right
Each component of roll wheel assembly carries out good lubrication；Also ensure the good lubrication between idler wheel cylindrical surface and cam.
Wherein, the both ends of the surface of the idler wheel are provided with the axial limit structure for limiting the idler wheel axial displacement.
Wherein, the axial limit structure is the positive stop lug boss of annular；Alternatively, the axial limit structure is interval setting
Multiple limited blocks.The axial limit structure of idler wheel both ends of the surface, ensure that has certain side between idler wheel and roller groove two sidewalls
The splashing of gap, two sides lubricating oil is uniform, so that sliding friction pair obtains effectively lubricating, optimizes the flow direction of lubricating oil, ensure that
Idler wheel normal rotation.
Wherein, the pin shaft is equipped with annular groove, and the annular groove is equipped with the guide gear for limiting the guide axial movement
Circle.
Wherein, it is provided with cell wall platform on the outside of the cell wall of the roller groove, the outboard end of the pin shaft hole is located at the slot
Wall platform.Due to being provided with cell wall platform, the processing of pin shaft hole is facilitated.
Wherein, the pin shaft is the pin shaft of low-alloy steel material, and the guide is the guide of powder metallurgy material.Compared to
With the pin shaft of the materials such as the bearing bronzes, brass or Pot metal of the prior art, the pin shaft price of low-alloy steel material is low, and
The feature of environmental protection is good.
Wherein, the guide is the guide of ferrous based powder metallurgical material.So that guide has good self-lubrication.
In conclusion the full floating roller tappet of the utility model, improves the secondary greasy property of roller-coaster friction, mentions
High tappet service life, improves engine reliability；And the manufacturing cost of roller tappet is reduced, the feature of environmental protection is good.
Detailed description of the invention
Fig. 1 is the full floating roller tappet structural decomposition diagram of the utility model embodiment；
Fig. 2 is the schematic cross-sectional view after Fig. 1 assembly (along pin shaft axial direction longitudinal section)；
Fig. 3 is another schematic cross-sectional view after Fig. 1 assembly (along pin shaft cross section)；
Fig. 4 is another schematic cross-sectional view after Fig. 1 assembly (along the section for deviateing pin shaft cross section)；
Fig. 5 is the tappet body structure schematic diagram (visual angle) in Fig. 1；
Fig. 6 is the tappet body structure schematic diagram (another visual angle) in Fig. 1；
Fig. 7 is the end view of Fig. 6；
In figure: 1- tappet body；11- roller groove；111- cell wall oil groove；12- pin shaft hole；13- tappet intracoelomic cavity；Inside 14-
Oil duct；15- cell wall platform；2- pin shaft；21- annular groove；3- guide；4- idler wheel；41- positive stop lug boss；5- guide retaining ring.
Specific embodiment
Further details of non-limitative illustration is made to the utility model with reference to the accompanying drawings and examples.
Common shown as shown in Figure 1 to Figure 4, the full floating roller tappet of the utility model embodiment includes: tappet body 1 and installation
Roll wheel assembly in the roller groove 11 of tappet body 1.
As Fig. 1, Fig. 5 to Fig. 7 jointly shown in, wherein the upper end of tappet body 1 be tappet intracoelomic cavity 13.The bottom of tappet body 1
It is provided with above-mentioned rollers slot 11, the cell wall of roller groove 11 is provided with the pin shaft hole 12 being connected with roller groove 11.In roller groove 11
Cell wall on the inside of be provided with cell wall oil groove 111, wherein preferred embodiment be cell wall oil groove 111 run through pin shaft hole 12 inner end, slot
The setting direction of wall oil groove 111 is preferably axial consistent with tappet body 1.In being internally provided in connection tappet body for tappet body 1
The internal galleries 14 of chamber 13 and roller groove 11.Be provided with cell wall platform 15 on the outside of the cell wall of roller groove 11, pin shaft hole 12 it is outer
Side is located at cell wall platform 15.
As shown in Figure 1, wherein roll wheel assembly includes pin shaft 2, the guide 3 for being sheathed on 2 outer circle of pin shaft and is sheathed on guide 3
The idler wheel 4 of outer circle, also, between pin shaft 2 and guide 3, between guide 3 and idler wheel 4 be to be slidably matched.3 axis are covered for banking pin
To movement, it is equipped with annular groove 21 in pin shaft 2, annular groove 21 is equipped with guide retaining ring 5.
As depicted in figs. 1 and 2, wherein the both ends of the surface of idler wheel 4 are provided with the axial direction for limiting 4 axial displacement of idler wheel
Position limiting structure.It is illustrated in figure, axial limit structure is the positive stop lug boss 41 of annular.Obviously, it is not limited to annular stop boss
Form, axial limit structure can also use spaced multiple limited blocks form.
As Fig. 2 to Fig. 4 jointly shown in, wherein idler wheel 4 is located in roller groove 11, pin shaft 2 and pin shaft hole 12 interference fit pacify
Dress.
Wherein, pin shaft 2 is the pin shaft of low-alloy steel material, and guide 3 is the guide of powder metallurgy material, it is preferred to use iron-based
Powder metallurgy material.Compared to the pin shaft of the materials such as bearing bronzes, brass or Pot metal with the prior art, low-alloy steel product
The pin shaft divalent lattice of matter are low, and the feature of environmental protection is good；The guide 3 of powder metallurgy material have good self-lubrication, be conducive to improve with
Greasy property between pin shaft 2, idler wheel 4.
The full floating roller tappet of the utility model, since its roll wheel assembly includes forming full floating connection by lubricating oil
Pin shaft 2, the guide 3 being sheathed on pin shaft 2 and the idler wheel 4 being sheathed on guide 3, the both ends of the surface of idler wheel 4 be provided with axial direction
Position limiting structure improves roller-coaster friction lubricating performance, and each component can all obtain good lubrication, ensure that idler wheel 4 is normal
Rotation, the along the circumferential direction even wearing of pin shaft 2, improves tappet service life, improves engine reliability；Pin shaft 2, guide
3 select reasonable material, reduce the manufacturing cost of roller tappet, and the feature of environmental protection is good.
Claims (10)
1. full floating roller tappet, the full floating roller tappet include:
Tappet body, one end of the tappet body are provided with roller groove, and the cell wall of the roller groove is provided with and the roller groove phase
The pin shaft hole of connection；
Roll wheel assembly, the roll wheel assembly include idler wheel and pin shaft, and the idler wheel is located in the roller groove and is sheathed on institute
It states outside pin shaft, the pin shaft is installed on the pin shaft hole；It is characterized in that,
Guide is also arranged with outside the pin shaft, the guide between the pin shaft and the idler wheel, the pin shaft with it is described
Between guide, between the guide and the idler wheel be to be slidably matched.
2. full floating roller tappet as described in claim 1, which is characterized in that be provided with slot on the inside of the cell wall of the roller groove
Wall oil groove.
3. full floating roller tappet as claimed in claim 2, which is characterized in that the cell wall oil groove is through the pin shaft hole
Inner end, the setting direction of the cell wall oil groove are axial consistent with the tappet body.
4. full floating roller tappet as claimed in claim 2, which is characterized in that the connection that is internally provided with of the tappet body is endured
The internal galleries of cylinder intracavity and the roller groove.
5. full floating roller tappet as described in claim 1, which is characterized in that the both ends of the surface of the idler wheel, which are provided with, to be used for
Limit the axial limit structure of the idler wheel axial displacement.
6. full floating roller tappet as claimed in claim 5, which is characterized in that the axial limit structure is the limit of annular
Boss；Alternatively, the axial limit structure is spaced multiple limited blocks.
7. full floating roller tappet as described in claim 1, which is characterized in that the pin shaft is equipped with annular groove, the annular groove peace
Equipped with the guide retaining ring for limiting the guide axial movement.
8. full floating roller tappet as described in claim 1, which is characterized in that be provided with slot on the outside of the cell wall of the roller groove
The outboard end of wall platform, the pin shaft hole is located at the cell wall platform.
9. full floating roller tappet as described in claim 1, which is characterized in that the pin shaft is the pin of low-alloy steel material
Axis, the guide are the guide of powder metallurgy material.
10. full floating roller tappet as claimed in claim 9, which is characterized in that the guide is ferrous based powder metallurgical material
Guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206458.9U CN209444384U (en) | 2018-12-25 | 2018-12-25 | Full floating roller tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206458.9U CN209444384U (en) | 2018-12-25 | 2018-12-25 | Full floating roller tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209444384U true CN209444384U (en) | 2019-09-27 |
Family
ID=68015674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822206458.9U Active CN209444384U (en) | 2018-12-25 | 2018-12-25 | Full floating roller tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209444384U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365153A (en) * | 2020-03-26 | 2020-07-03 | 南通通力油泵有限公司 | Tappet body with lubricating structure |
| CN113931772A (en) * | 2021-11-09 | 2022-01-14 | 无锡锡州机械有限公司 | Tappet body part with long service life for high pressure common rail |
| CN114992022A (en) * | 2022-05-18 | 2022-09-02 | 无锡锡州机械有限公司 | Roller lubricating structure of marine engine |
-
2018
- 2018-12-25 CN CN201822206458.9U patent/CN209444384U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365153A (en) * | 2020-03-26 | 2020-07-03 | 南通通力油泵有限公司 | Tappet body with lubricating structure |
| CN113931772A (en) * | 2021-11-09 | 2022-01-14 | 无锡锡州机械有限公司 | Tappet body part with long service life for high pressure common rail |
| CN114992022A (en) * | 2022-05-18 | 2022-09-02 | 无锡锡州机械有限公司 | Roller lubricating structure of marine engine |
| CN114992022B (en) * | 2022-05-18 | 2024-02-09 | 无锡锡州机械有限公司 | Roller lubricating structure of marine engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209444384U (en) | Full floating roller tappet | |
| CN201953818U (en) | Self-lubricating sliding bearing | |
| CN102537061A (en) | Embedding type bearing assembly structure | |
| CN203146590U (en) | Sliding bearing for butterfly valve | |
| CN205780320U (en) | A kind of automatic compensation self-lubricating bearing | |
| CN205559555U (en) | Oil -free lubrication's slide bearing | |
| JP2009030467A (en) | Structure for tappet roller bearing | |
| CN204457906U (en) | Roller type tappet | |
| US9103236B2 (en) | Cam follower | |
| CN201137637Y (en) | Steel base abrasion-proof slide bearing | |
| CN203395019U (en) | Bearing bush applied to ship engine | |
| CN202158076U (en) | Thrust cylinder roller bearing | |
| CN105179129A (en) | Cam follower roller device, notably for a fuel injection pump | |
| CN204458840U (en) | A kind of high abrasion sliding bearing | |
| CN201083231Y (en) | Automatic aligning axial direction displacement precision bearing | |
| CN209369888U (en) | Roller rock arm | |
| CN202628786U (en) | Ultrahigh molecular weight polyethylene bearing | |
| CN208417276U (en) | A kind of high rigidity precision bearing inner ring | |
| CN207229580U (en) | A kind of agricultural machine supporting structure | |
| CN209083823U (en) | A kind of ball retainer | |
| CN205383187U (en) | Wear -resistant shaft sleeve | |
| JPWO2015163198A1 (en) | Roller type rocker arm | |
| CN202493588U (en) | Self-aligning bearing | |
| CN205780289U (en) | A kind of rounded channels oscillating bearing | |
| CN211900721U (en) | Novel diesel engine valve tappet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |