CN108457714A - A kind of rocking arm mounting structure - Google Patents
A kind of rocking arm mounting structure Download PDFInfo
- Publication number
- CN108457714A CN108457714A CN201810221002.1A CN201810221002A CN108457714A CN 108457714 A CN108457714 A CN 108457714A CN 201810221002 A CN201810221002 A CN 201810221002A CN 108457714 A CN108457714 A CN 108457714A
- Authority
- CN
- China
- Prior art keywords
- rocking arm
- arm shaft
- rocker arm
- hole
- shaft body
- 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.)
- Withdrawn
Links
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000013011 mating Effects 0.000 claims description 29
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000011900 installation process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a kind of rocking arm mounting structures, including rocker arm bracket, rocker arm shaft, rocker arm bracket is equipped with boss, rocker arm shaft is mounted on boss, rocker arm shaft includes rocking arm shaft body, the left and right ends of rocking arm shaft body are respectively connected with end axis, rocking arm is installed on the axis of end, boss is equipped with the first dowel hole, rocking arm shaft body is equipped with the second dowel hole corresponding with the first dowel hole, positioning pin is installed in first dowel hole, the upper end of positioning pin is inserted into the second dowel hole, rocking arm shaft body is equipped with bolt mounting hole, boss is equipped with threaded connection hole, it is coated with fixing bolt in bolt mounting hole, the lower end of fixing bolt is screwed into threaded connection hole.The problems such as rocking arm mounting structure provided by the invention can solve the abrasion of rocker arm shaft axle sleeve, rocker arm shaft disassembly efficiency is low, the rocking arm mounting structure can facilitate the connection between rocker arm bracket, rocker arm shaft, rocking arm; installation of the rocker arm shaft on rocker arm bracket is more convenient, and rocker arm shaft installation site on rocker arm bracket is more accurate.
Description
Technical field
The present invention relates to a kind of rocking arm mounting structures.
Background technology
There are mainly two types of fit systems for marine diesel rocker arm shaft and rocker arm bracket bore at present：Clearance fit and interference are matched
It closes.When clearance fit, in order to improve the service life of rocker arm shaft and rocker arm bracket, need that axle sleeve, axle sleeve are installed in rocking arm bore
Using on the one hand increase engine cost, on the other hand, if the clearance control of rocker arm shaft axle sleeve and rocker arm shaft is improper,
Such as gap it is less than normal when, when dry friction will occur and accelerating abrasion or the gap bigger than normal of axle sleeve and rocker arm shaft, axle sleeve will be caused
Eccentric wear shortens the service life of rocker arm shaft and axle sleeve；When interference fit, rocker arm shaft needs cold in the cryogenic medias such as liquid nitrogen
But, it is then installed to rapidly in rocker arm bracket bore, while also to ensure that the control of rocker arm shaft axial position is accidentally during the installation process
It is aligned with rocker arm bracket oilhole with guarantee rocker arm shaft in poor range, this just needs to design special tooling, to be controlled, virtually to carry
High cost reduces disassembly efficiency.
Invention content
The purpose of the present invention is providing a kind of rocking arm mounting structure regarding to the issue above, worn with solving rocker arm shaft axle sleeve,
The problems such as rocker arm shaft disassembly efficiency is low.
In order to achieve the above objectives, the present invention includes rocker arm bracket, rocker arm shaft, and it is convex to be structurally characterized in that the rocker arm bracket is equipped with
Platform, rocker arm shaft are mounted on boss, and rocker arm shaft includes rocking arm shaft body, and the left and right ends of rocking arm shaft body are respectively connected with end axis,
Rocking arm is installed, boss is equipped with the first dowel hole, and rocking arm shaft body is equipped with corresponding with the first dowel hole on the axis of end
The second dowel hole, positioning pin is installed in the first dowel hole, the upper end of positioning pin is inserted into the second dowel hole, shakes
Arm axle ontology is equipped with bolt mounting hole, and boss is equipped with threaded connection hole, fixing bolt is coated in bolt mounting hole, fixed
The lower end of bolt is screwed into threaded connection hole.
With the above structure, the positioning of the two, fixed spiral shell are realized in rocker arm shaft design seperated with rocker arm bracket using positioning pin
Bolt realizes the connection of the two, and rocker arm shaft can be individually replaced with rocker arm bracket during use, due to eliminating rocker arm shaft axle sleeve, reduces
Efficiency of assembling is improved while cost again, axial position of the adjustment rocker arm shaft on rocker arm bracket is no longer needed to when rocker arm shaft is installed
Tolerance, you can realize the accurate positionin of rocker arm shaft.
The rocking arm shaft body is cylinder, holds axis and rocking arm shaft body coaxial, and the diameter of axis is held to be less than rocking arm shaft body
Diameter, the top surface of boss is the first mating surface, and the underlying side of rocking arm shaft body is equipped with the second mating surface, the second cooperation
Face and the first mating surface are plane, and the first dowel hole is located in the first mating surface, and the second dowel hole is located at the second cooperation
On face.With the above structure, entire rocker arm shaft is the multidiameter structure that rocking arm shaft body and two end axles are collectively formed, and first matches
Conjunction face is the plane that cylinder side removes that some materials are formed, and multi-diameter shaft can be obtained by turning, and the first mating surface can pass through
The upper milling that cylinder is formed by rocking arm shaft body obtains, it can be seen that the processing of this rocker arm shaft is relatively simple, processing
There is higher precision, cooperation and two positioning pins of the rocker arm shaft with rocker arm bracket using the first mating surface with the second mating surface to realize afterwards
Positioning in installation process, more accurately, after installation precision is higher for positioning.
The side that the rocking arm shaft body is located above is equipped with upper mounting surface, and upper mounting surface is parallel with the second mating surface
Plane, bolt mounting hole are the through-hole through upper mounting surface and the second mating surface.With the above structure, upper mounting surface can be by
The method that rocking arm shaft body is formed by material removal on cylinder obtains, then the processing bolt mounting hole on upper mounting surface,
Process more convenient, machining accuracy is higher.
The number of first dowel hole is two, and the number of the second dowel hole is two.With the above structure
Rocker arm shaft and rocker arm bracket realize positioning when installing using a face and two positioning pins, accurate positioning, reliable, are not in
The problem of positioning.
The number of the threaded connection hole is two.With the above structure, rocker arm shaft uses two fixations with rocker arm bracket
Bolt is fixed, and this fixed form is more reliable, and fixed relatively simple, conveniently.
The rocking arm is equipped with mounting hole, and end axis passes through the mounting hole on rocking arm, end axis to be equipped with annular groove, holds and be set on axis
There is gasket, baffle ring is installed on annular groove, gasket is located at the outside of rocking arm, and baffle ring is located at the outside of gasket.Above structure is for real
Existing installation of the rocking arm on rocker arm bracket, when installation, need to will be only sleeved at the mounting hole of rocking arm on the axis of end, then are set on the axis of end
Baffle ring, installation gasket, when installation, are more convenient.
In conclusion rocking arm mounting structure provided by the invention can solve the abrasion of rocker arm shaft axle sleeve, rocker arm shaft dismounting effect
The problems such as rate is low, the rocking arm mounting structure can facilitate the connection between rocker arm bracket, rocker arm shaft, rocking arm, and rocker arm shaft is on rocker arm bracket
Installation it is more convenient, rocker arm shaft installation site on rocker arm bracket is more accurate.
Description of the drawings
Specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram after the present invention dismantles；
Fig. 3 is the structural schematic diagram of rocker arm bracket in the present invention；
Fig. 4 is the structural schematic diagram of rocker arm shaft in the present invention；
Fig. 5 is the vertical view of Fig. 4；
Fig. 6 is the upward view of Fig. 4；
Fig. 7 is the structural schematic diagram after line A-A cutting in Fig. 6.
Specific implementation mode
With reference to attached drawing, which includes rocker arm bracket 1, rocker arm shaft 2, and rocker arm bracket 1 is equipped with boss 3, rocker arm shaft 2
On boss 3, rocker arm shaft 2 includes rocking arm shaft body 4, and the left and right ends of rocking arm shaft body 4 are respectively connected with end axis 5, hold axis 5
On rocking arm 6 is installed, boss 3 is equipped with the first dowel hole 7, and rocking arm shaft body 4 is equipped with corresponding with the first dowel hole 7
The second dowel hole 8, positioning pin 9 is installed in the first dowel hole 7, the upper end of positioning pin 9 is inserted into the second dowel hole 8
In, rocking arm shaft body 4 is equipped with bolt mounting hole 10, and boss 3 is equipped with threaded connection hole 11, is coated in bolt mounting hole 10
The lower end of fixing bolt 12, fixing bolt 12 is screwed into threaded connection hole 11.With the above structure, rocker arm shaft 2 and rocking arm
1 fission design of seat, realizes that the connection of the two, rocking arm during use are realized in the positioning of the two, fixing bolt 12 using positioning pin 9
Axis 2 can be individually replaced with rocker arm bracket 1, and due to eliminating rocker arm shaft axle sleeve, efficiency of assembling is improved again while reducing cost,
Axial position tolerance of the adjustment rocker arm shaft 2 on rocker arm bracket 1 is no longer needed to when rocker arm shaft 2 is installed, you can realize the accurate of rocker arm shaft 2
Positioning.
Rocking arm shaft body 4 is cylinder, holds axis 5 and rocking arm shaft body 4 coaxial, and the diameter of end axis 5 is less than rocking arm shaft body 4
Diameter, the top surface of boss 3 is the first mating surface 14, and 4 underlying side of rocking arm shaft body is equipped with the second mating surface 13, the
Two mating surfaces 13 and the first mating surface 14 are plane, and the first dowel hole 7 is located in the first mating surface 14, the second dowel hole
8 are located in the second mating surface 13.With the above structure, entire rocker arm shaft 2 is that rocking arm shaft body 4 and two end axles 5 are collectively formed
Multidiameter structure, the first mating surface 14 is the plane that cylinder side removes that some materials are formed, and multi-diameter shaft can pass through turning
It obtains, the first mating surface 14 can be obtained by being formed by the upper milling of cylinder in rocking arm shaft body 4, it can be seen that this to shake
The processing of arm axle 2 is relatively simple, has higher precision after processing, and rocker arm shaft 2 and rocker arm bracket 1 utilize the first mating surface 14 and the
The cooperation of two mating surfaces 13 and two positioning pins 9 realize the positioning in installation process, and more accurately, after installation precision is higher for positioning.
The side that rocking arm shaft body 4 is located above is equipped with upper mounting surface 15, and upper mounting surface 15 is flat with the second mating surface 13
Capable plane, bolt mounting hole 10 are the through-hole through upper mounting surface 15 and the second mating surface 13.With the above structure, upper peace
The method that dress face 15 can be formed by material removal on cylinder by rocking arm shaft body 4 obtains, then on upper mounting surface 15
Processing bolt mounting hole 10, processing is more convenient, and machining accuracy is higher.
The number of first dowel hole 7 is two, and the number of the second dowel hole 8 is two.It shakes with the above structure
Arm axle 2 and rocker arm bracket 1 realize positioning when installing using a face and two positioning pins 9, accurate positioning, reliable, are not in
The problem of crossing positioning.
The number of threaded connection hole 11 is two.With the above structure, rocker arm shaft 2 uses two fixations with rocker arm bracket 1
Bolt 12 is fixed, and this fixed form is more reliable, and fixed relatively simple, conveniently.
Rocking arm 6 is equipped with mounting hole 16, and end axis 5 passes through the mounting hole 16 on rocking arm 6, end axis 5 to be equipped with annular groove 17, hold axis
It is set with gasket 18 on 5, baffle ring 19 is installed on annular groove 17, gasket 18 is located at the outside of rocking arm 6, and baffle ring 19 is located at gasket 18
Outside.Installation of the above structure for realizing rocking arm 6 on rocker arm bracket 1 need to will be only set at the mounting hole 16 of rocking arm 6 when installation
On the axis 5 of end, then suit baffle ring 19, installation gasket 18 on the axis 5 of end, when installation, are more convenient.
In conclusion the present invention is not limited to above-mentioned specific implementation modes.Those skilled in the art are not departing from the present invention's
Under the premise of spirit and scope, several change and modification can be done, all these variations should all fall into protection scope of the present invention.
Claims (6)
1. a kind of rocking arm mounting structure, including rocker arm bracket（1）, rocker arm shaft（2）, it is characterized in that the rocker arm bracket（1）It is equipped with convex
Platform（3）, rocker arm shaft（2）Mounted on boss（3）On, rocker arm shaft（2）Including rocking arm shaft body（4）, rocking arm shaft body（4）Left and right
Both ends are respectively connected with end axis（5）, hold axis（5）On rocking arm is installed（6）, boss（3）It is equipped with the first dowel hole（7）, rocking arm
Shaft body（4）It is equipped with and the first dowel hole（7）Corresponding second dowel hole（8）, the first dowel hole（7）Interior installation
There is positioning pin（9）, positioning pin（9）Upper end be inserted into the second dowel hole（8）In, rocking arm shaft body（4）It is worn equipped with bolt
Fill hole（10）, boss（3）It is equipped with threaded connection hole（11）, bolt mounting hole（10）Inside it is coated with fixing bolt（12）, fixed
Bolt（12）Lower end be screwed into threaded connection hole（11）In.
2. rocking arm mounting structure according to claim 1, it is characterized in that the rocking arm shaft body（4）For cylinder, axis is held
（5）With rocking arm shaft body（4）Coaxially, axis is held（5）Diameter be less than rocking arm shaft body（4）Diameter, boss（3）Top surface be the
One mating surface（14）, rocking arm shaft body（4）Underlying side is equipped with the second mating surface（13）, the second mating surface（13）With
One mating surface（14）It is plane, the first dowel hole（7）It is located at the first mating surface（14）On, the second dowel hole（8）It is located at
Second mating surface（13）On.
3. rocking arm mounting structure according to claim 2, it is characterized in that the rocking arm shaft body（4）The side being located above
Equipped with upper mounting surface（15）, upper mounting surface（15）For with the second mating surface（13）Parallel plane, bolt mounting hole（10）To pass through
Put on mounting surface（15）With the second mating surface（13）Through-hole.
4. rocking arm mounting structure according to claim 1, it is characterized in that first dowel hole（7）Number be two
It is a, the second dowel hole（8）Number be two.
5. rocking arm mounting structure according to claim 1, it is characterized in that the threaded connection hole（11）Number be two.
6. the rocking arm mounting structure according to any one of claim 1 to 8 claim, it is characterized in that the rocking arm（6）
It is equipped with mounting hole（16）, hold axis（5）Across rocking arm（6）On mounting hole（16）, hold axis（5）It is equipped with annular groove（17）, hold axis
（5）On be set with gasket（18）, annular groove（17）On baffle ring is installed（19）, gasket（18）Positioned at rocking arm（6）Outside, baffle ring
（19）Positioned at gasket（18）Outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221002.1A CN108457714A (en) | 2018-03-17 | 2018-03-17 | A kind of rocking arm mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221002.1A CN108457714A (en) | 2018-03-17 | 2018-03-17 | A kind of rocking arm mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108457714A true CN108457714A (en) | 2018-08-28 |
Family
ID=63236894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810221002.1A Withdrawn CN108457714A (en) | 2018-03-17 | 2018-03-17 | A kind of rocking arm mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457714A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997702A (en) * | 2020-07-09 | 2020-11-27 | 广西玉柴机器股份有限公司 | An anti-falling structure of an engine rocker arm roller pin |
| CN113586195A (en) * | 2021-08-27 | 2021-11-02 | 浙江跃进锻造有限公司 | Braking rocker arm and engine |
| CN113898722A (en) * | 2021-10-20 | 2022-01-07 | 中船动力研究院有限公司 | Rocker arm mechanism |
| CN114575955A (en) * | 2022-04-14 | 2022-06-03 | 广西玉柴机器股份有限公司 | A rocker arm seat and rocker arm shaft assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2212482A1 (en) * | 1996-08-07 | 1998-02-07 | Sandco Automotive Ltd. | Roller rocker arm |
| CN103375210A (en) * | 2012-04-27 | 2013-10-30 | 安徽华菱汽车有限公司 | Engine and support for cam shaft and rocker shaft |
| CN105569756A (en) * | 2015-03-18 | 2016-05-11 | 第一拖拉机股份有限公司 | Diesel engine single overhead camshaft driven valve rocker mechanism |
| CN105723055A (en) * | 2013-11-13 | 2016-06-29 | 戴姆勒股份公司 | Engine brake device for internal combustion engine |
| JP2017125413A (en) * | 2016-01-12 | 2017-07-20 | 三菱自動車工業株式会社 | Valve gear |
-
2018
- 2018-03-17 CN CN201810221002.1A patent/CN108457714A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2212482A1 (en) * | 1996-08-07 | 1998-02-07 | Sandco Automotive Ltd. | Roller rocker arm |
| CN103375210A (en) * | 2012-04-27 | 2013-10-30 | 安徽华菱汽车有限公司 | Engine and support for cam shaft and rocker shaft |
| CN105723055A (en) * | 2013-11-13 | 2016-06-29 | 戴姆勒股份公司 | Engine brake device for internal combustion engine |
| CN105569756A (en) * | 2015-03-18 | 2016-05-11 | 第一拖拉机股份有限公司 | Diesel engine single overhead camshaft driven valve rocker mechanism |
| JP2017125413A (en) * | 2016-01-12 | 2017-07-20 | 三菱自動車工業株式会社 | Valve gear |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997702A (en) * | 2020-07-09 | 2020-11-27 | 广西玉柴机器股份有限公司 | An anti-falling structure of an engine rocker arm roller pin |
| CN113586195A (en) * | 2021-08-27 | 2021-11-02 | 浙江跃进锻造有限公司 | Braking rocker arm and engine |
| CN113898722A (en) * | 2021-10-20 | 2022-01-07 | 中船动力研究院有限公司 | Rocker arm mechanism |
| CN114575955A (en) * | 2022-04-14 | 2022-06-03 | 广西玉柴机器股份有限公司 | A rocker arm seat and rocker arm shaft assembly |
| CN114575955B (en) * | 2022-04-14 | 2025-03-11 | 广西玉柴机器股份有限公司 | A rocker arm seat and rocker arm shaft assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180828 |
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| WW01 | Invention patent application withdrawn after publication |