CN208578602U - General-purpose engine rocker arm mounting structure - Google Patents
General-purpose engine rocker arm mounting structure Download PDFInfo
- Publication number
- CN208578602U CN208578602U CN201821133062.XU CN201821133062U CN208578602U CN 208578602 U CN208578602 U CN 208578602U CN 201821133062 U CN201821133062 U CN 201821133062U CN 208578602 U CN208578602 U CN 208578602U
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- arm shaft
- cylinder head
- shaft
- general
- 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
- 238000009434 installation Methods 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a kind of general-purpose engine rocker arm mounting structures, including cylinder head and rocker arm, the cylinder head upper end has the installation cavity to lower recess, there is rocker arm support protruding upward in the installation cavity, the rocker arm is movably arranged on rocker arm support by rocker arm shaft, and rocker arm support is equipped with rocker arm shaft mounting hole in respective rocker arm shaft position, and the cylinder head is equipped with fixing bolt, the fixing bolt, radially across the rocker arm shaft, rocker arm shaft and rocker arm support is fixed by rocker arm shaft.The advantages that the utility model is fixed rocker arm shaft and rocker arm support using fixing bolt, can be effectively improved the stress condition of rocker arm support, prevents from being broken, and has structure simple, easy for installation, good reliability.
Description
Technical field
The utility model relates to technical field of internal combustion engines, and in particular to a kind of general-purpose engine rocker arm mounting structure.
Background technique
Rocker arm is the important process component of internal combustion engine, for pushing valve motion in the case where camshaft acts on, to realize internal combustion
The opening and closing of inlet and exhaust valve in machine work process.
In general-purpose engine, rocker arm is mounted in cylinder head generally by rocker arm shaft, and part type is by rocker arm, rocker arm
Axis and for installing rocker arm shaft rocker arm support assembly be an assembly after again integral installation also there is part type to be to cylinder head
Rocker arm support and cylinder head are integrally formed, and drilled on rocker arm support to install rocker arm shaft.
For rocker arm support and the integrally formed type of cylinder head, in internal combustion engine working process, rocker arm high-speed motion,
Rocker arm shaft needs to bear biggish radial impact load, and after working long hours, it is corresponding on rocker arm support to may cause rocker arm shaft
Fit clearance between mounting hole increases, and generates unbalance loading, or even rocker arm support is caused to be broken, seriously affects the reliability of internal combustion engine
And safety, there are great hidden danger of quality, cause huge economic loss to user and manufacturing enterprise.
Utility model content
In view of this, the present invention provides a kind of general-purpose engine rocker arm mounting structures, can effectively solve the problem that in existing
Rocker arm support there is technical issues that in combustion engine.
To achieve the above object, technical solutions of the utility model are as follows:
A kind of general-purpose engine rocker arm mounting structure, including cylinder head and rocker arm, the cylinder head upper end have to recessed
Sunken installation cavity, the installation cavity is interior to have rocker arm support protruding upward, and the rocker arm is movably arranged on rocker arm by rocker arm shaft
On support, rocker arm support is equipped with rocker arm shaft mounting hole in respective rocker arm shaft position, and key is: the cylinder head is equipped with solid
Determine bolt, which, radially across the rocker arm shaft, rocker arm shaft and rocker arm support are fixed by rocker arm shaft.
Above structure is anchored to rocker arm shaft on rocker arm support using fixing bolt, is reduced on rocker arm shaft and rocker arm support
The fit clearance of rocker arm shaft mounting hole, radial load suffered by rocker arm shaft are transmitted in cylinder head through fixing bolt, effectively change
The stress condition of rocker arm support has been apt to it, rocker arm support is prevented to be broken, has improved the reliability and safety of internal combustion engine.
In order to realize the fixation to rocker arm shaft with relatively simple structure, and it is convenient for assembly, and the fixing bolt is by rocker arm
Support upper surface penetrates, and rocker arm shaft is equipped with the bolt through-hole being adapted with the fixing bolt, rocker arm at the middle part of its length direction
Support penetrates position equipped with fixation hole in fixing bolt, which is equipped with spiral shell in its lower end position for passing through rocker arm shaft mounting hole
Rocker arm support on rocker arm shaft and cylinder head after fixing bolt penetrates, can be linked to be an entirety, thus by original structure by line section
The impact for concentrating on rocker arm support top is distributed in entire cylinder head, to improve the reliability of rocker arm shaft installation.
Preferably, the middle part of the rocker arm length direction is equipped with the installation window for penetrating through its upper and lower surface, to facilitate fixation
It the screw-in of bolt and tightens.
The rocker arm two sides have the installation trunnion extended downwardly, and installation trunnion is equipped with rocker arm shaft matching hole, rocker arm shaft
Both ends end respectively penetrates in corresponding rocker arm shaft matching hole, which can facilitate the cooperation of rocker arm and rocker arm shaft, it is ensured that shake
The reliable installation of arm.
To prevent in internal combustion engine working process, installation trunnion and rocker arm support are interfered, and the rocker arm support outer is in correspondence
Trunnion position is installed and is equipped with evacuation step.
The one end end is equipped with the auxiliary section of globoidal structure, the convenient movement that rocker arm is realized with mandril cooperation.
For convenience of installation cylinder head cover, the cylinder head is equipped with cylinder head cover connecting hole on the outer end face of installation cavity.
The utility model has the advantages that
Using the general-purpose engine rocker arm mounting structure of above technical scheme, using fixing bolt by rocker arm shaft and rocker arm branch
Seat is fixed, can be effectively improved the stress condition of rocker arm support, prevent from being broken, and has structure simple, easy for installation, good reliability
The advantages that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of the line A-A along Fig. 1；
Fig. 3 is the cross-sectional view of the line B-B along Fig. 1；
Fig. 4 is the structural schematic diagram of cylinder head；
Fig. 5 is the cross-sectional view of cylinder head；
Fig. 6 is the structural schematic diagram of rocker arm；
Fig. 7 is the structural schematic diagram of rocker arm shaft.
Specific embodiment
The utility model is described in further detail with attached drawing with reference to embodiments.
General-purpose engine rocker arm mounting structure as shown in Figure 1, including cylinder head 1 and rocker arm 2,1 upper end of cylinder head are equipped with
To the installation cavity 11 of lower recess, rocker arm 2 is movably arranged in installation cavity 11 by rocker arm shaft 3, and rocker arm 2 is two altogether in the present embodiment
It is a, it is symmetricly set in installation cavity 11, cylinder head cover connecting hole 15 is distributed on the outer end face of installation cavity 11 in cylinder head 1,
To install cylinder head cover.
Fig. 4 and Fig. 5 shows the specific structure of cylinder head 1, symmetrically set in the installation cavity 11 of upper end there are two to
The rocker arm support 12 protruded above, be adapted to two rocker arms 2 installation, two generally rectangular shaped block structures of rocker arm support 12, and
It is integrally formed with cylinder head 1.
There is the rocker arm shaft mounting hole 13 being arranged radially along the rocker arm support 12 in the position close to 12 upper end of rocker arm support,
To install rocker arm shaft 2, rocker arm shaft mounting hole 13 runs through the both sides of the face of rocker arm support 12.
The upper surface of rocker arm support 12 is configured to generally planar structure, have on rocker arm support 12 along the upper end towards
The fixation hole 14 of lower extension after bolt hole 14 is passed down through rocker arm shaft mounting hole 13, is provided with below rocker arm shaft mounting hole 13
Thread segment 14a.
Fig. 6 is please referred to, rocker arm 2 includes the rocker arm ontology 2a of a generally rectangular shaped plate structure, the rocker arm ontology 2a length
The middle part in direction is equipped with the installation window 21 for penetrating through its upper and lower surface, and two sides long side outer rim has the installation trunnion extended downwardly
22, installation trunnion 22 is equipped with rocker arm shaft matching hole 23.
The rocker arm one end ontology 2a end is equipped with the auxiliary section 24 of globoidal structure, to facilitate and mandril (not shown) end
Cooperation, rocker arm ontology 2a are equipped with adjustment bolt 25 far from the other end of auxiliary section 24, to cooperate with valve end.
Fig. 7 is the structural schematic diagram of rocker arm shaft 3, has in the medium position of rocker arm shaft 3 length direction and is disposed radially
Bolt through-hole 31.
It can be seen that two rocker arms 2 in conjunction with Fig. 2 and Fig. 3 and corresponding in installation cavity 11 shake be mounted on by rocker arm shaft 3 respectively
12 position of arm support, rocker arm shaft 3 are threaded through in rocker arm shaft mounting hole 13, and both ends are pierced by outside rocker arm shaft mounting hole 13, and with can
Rotating manner protrudes into the rocker arm shaft matching hole 23 on 2 two sides of respective rocker arm installation trunnion 22, to realize the installation of rocker arm 2,
Under mandril pushes, rocker arm 2 can be generated suitably using 3 center of rocker arm shaft as rotation axis relative to rocker arm support 12 and rocker arm shaft 3
Rotation realizes the opening and closing of valve in each stroke of internal combustion engine to push valve motion.
After rocker arm 2 is installed to rocker arm support 12, a fixing bolt 4 is worn again on rocker arm support 12, this is fixed
Bolt 4 is penetrated by 12 upper end fixation hole 14 of rocker arm support, and is passed through by the bolt through-hole 31 at 3 middle part of rocker arm shaft, is protruded into be located at and be shaken
It is in the thread segment 14a of 13 lower part of arm axle mounting hole and fixed.Such structure can anchor rocker arm shaft 3 using fixing bolt 4
Cut down the fit clearance between rocker arm shaft 3 and rocker arm shaft mounting hole 13 on rocker arm support 12, and through fixing bolt 4.
Fixing bolt 4 can further ensure that the reliable installation of rocker arm 2, simultaneously as rocker arm shaft 3 and rocker arm shaft mounting hole
Fit clearance between 13 is smaller, can delay the abrasion of rocker arm shaft 3, extends the service life of internal combustion engine.Rocker arm shaft 3 is born
Radial load 12 lower part of rocker arm support is transmitted to by fixing bolt 4, i.e., rocker arm shaft 3 is connected with cylinder head 1 it is integral, from
And the non-deformability of rocker arm support 12 is improved, when preventing internal combustion engine long-term work, the case where unexpected fracture of rocker arm support 12, is sent out
It is raw.
Two rocker arm supports 12 are obliquely installed along 1 short transverse of cylinder head, i.e. two rocker arm supports 12 are along 1 height of cylinder head
There is an angle less than 90 °, so that rocker arm shaft 3 is installed on installation cavity 11 with lateral attitude between the downward extended line in direction
In, and inner side end is exposed to 11 upper space of installation cavity, so that 1 top of cylinder head is obtained bigger operating space, is repairing
When can be convenient disassembly.
Two rocker arm supports 12 are additionally provided with evacuation step 12a in the side outer that it mutually deviates from, and avoid step 12a and shake
22 position of installation trunnion in 2 outside of arm is corresponding.
Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this field
Art personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make
Multiple similar expressions, such transformation are each fallen within the protection scope of the utility model.
Claims (7)
1. a kind of general-purpose engine rocker arm mounting structure, including cylinder head (1) and rocker arm (2), cylinder head (1) upper end has
To the installation cavity (11) of lower recess, there is rocker arm support (12) protruding upward in the installation cavity (11), the rocker arm (2) passes through
Rocker arm shaft (3) is movably arranged on rocker arm support (12), and rocker arm support (12) is pacified in respective rocker arm axis (3) position equipped with rocker arm shaft
It fills hole (13), it is characterised in that: the cylinder head (1) is equipped with fixing bolt (4), and the fixing bolt (4) is by rocker arm shaft (3) diameter
To the rocker arm shaft (3) is passed through, rocker arm shaft (3) and rocker arm support (12) are fixed.
2. general-purpose engine rocker arm mounting structure according to claim 1, it is characterised in that: the fixing bolt (4) by
Rocker arm support (12) upper surface penetrates, rocker arm shaft (3) the middle part of its length direction be equipped with the fixing bolt (4) be adapted
Bolt through-hole (31), rocker arm support (12) penetrate position equipped with fixation hole (14) in fixing bolt (4), and the fixation hole (14) is at it
Lower end position across rocker arm shaft mounting hole (13) is equipped with thread segment (14a).
3. general-purpose engine rocker arm mounting structure according to claim 2, it is characterised in that: rocker arm (2) the length side
To middle part be equipped with penetrate through its upper and lower surface installation window (21).
4. general-purpose engine rocker arm mounting structure according to claim 1 or 2 or 3, it is characterised in that: the rocker arm (2)
Two sides have the installation trunnion (22) extended downwardly, and installation trunnion (22) is equipped with rocker arm shaft matching hole (23), rocker arm shaft (3) two
End end respectively penetrates in corresponding rocker arm shaft matching hole (23).
5. general-purpose engine rocker arm mounting structure according to claim 4, it is characterised in that: the rocker arm support (12) is outside
Evacuation step (12a) is equipped with along in corresponding installation trunnion (22) position.
6. general-purpose engine rocker arm mounting structure according to claim 1 or 2 or 3, it is characterised in that: the rocker arm (2)
One end end is equipped with the auxiliary section (24) of globoidal structure.
7. general-purpose engine rocker arm mounting structure according to claim 1, it is characterised in that: the cylinder head (1) is being pacified
Behave affectedly (11) outer end face be equipped with cylinder head cover connecting hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821133062.XU CN208578602U (en) | 2018-07-17 | 2018-07-17 | General-purpose engine rocker arm mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821133062.XU CN208578602U (en) | 2018-07-17 | 2018-07-17 | General-purpose engine rocker arm mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208578602U true CN208578602U (en) | 2019-03-05 |
Family
ID=65510699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821133062.XU Active CN208578602U (en) | 2018-07-17 | 2018-07-17 | General-purpose engine rocker arm mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208578602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843420A (en) * | 2018-07-17 | 2018-11-20 | 力帆实业(集团)股份有限公司 | Rocker arm mounting structure suitable for general-purpose engine |
-
2018
- 2018-07-17 CN CN201821133062.XU patent/CN208578602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843420A (en) * | 2018-07-17 | 2018-11-20 | 力帆实业(集团)股份有限公司 | Rocker arm mounting structure suitable for general-purpose engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208578602U (en) | General-purpose engine rocker arm mounting structure | |
| AU2014101535A4 (en) | Four-valve cylinder head of diesel engines | |
| CN220336965U (en) | Gap compensation mechanism of engine rocker arm | |
| CN108999876A (en) | Freezer compressor link assembly | |
| CN108843420A (en) | Rocker arm mounting structure suitable for general-purpose engine | |
| CN205918458U (en) | There is buffer function zero clearance internal -combustion engine mechanical type valve tappet | |
| CN202431318U (en) | Engine valve rocker | |
| CN214887276U (en) | Rotary variable gas distribution phase structure for VVS motorcycle | |
| CN201843697U (en) | Timing chain cover of automobile engine | |
| CN113795656B (en) | Variable compression ratio mechanism, engine and automobile | |
| CN211550255U (en) | Hinge bolt | |
| CN203962063U (en) | A kind of valve actuating mechanism | |
| CN209324606U (en) | A kind of corona formula air compressor | |
| CN111396165B (en) | Distance piece and valve timing mechanism | |
| US4694788A (en) | Internal combustion engine rocker arm | |
| CN219754667U (en) | Petrol engine cylinder | |
| CN102226417A (en) | Engine camshaft assembly and motorcycle | |
| CN105443183B (en) | A kind of valve rocker component of motorcycle engine | |
| CN111322167A (en) | Design method and structure of cylinder sleeve with abdicating window | |
| CN221169684U (en) | Trailer cam | |
| CN219344790U (en) | Starting pressure reducing device of motorcycle engine | |
| CN118375501B (en) | Engine rocker arm braking device and engine | |
| CN215595674U (en) | Engine rocker arm mounting structure | |
| CN212536554U (en) | Guide rail integrated tensioner | |
| CN221921096U (en) | Single-cylinder four-valve rocker arm structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: 401120 No. 2 Huanghuan North Road, Jinshan Avenue, Beibu New Area, Yubei District, Chongqing Patentee after: Chongqing.lifan POWER Co.,Ltd. Address before: 400707 No. 16, Feng Qi Road, Tongxing Industrial Park, Cai Jia Gang, Beibei District, Chongqing Patentee before: Lifan Industry (Group) Co.,Ltd. |
|
| TR01 | Transfer of patent right |