CN104712385B - Engine valve bridge structure - Google Patents
Engine valve bridge structure Download PDFInfo
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- CN104712385B CN104712385B CN201510140761.1A CN201510140761A CN104712385B CN 104712385 B CN104712385 B CN 104712385B CN 201510140761 A CN201510140761 A CN 201510140761A CN 104712385 B CN104712385 B CN 104712385B
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- groove
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- valve bridge
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Classifications
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- 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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Taps Or Cocks (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to an engine valve bridge structure. The engine valve bridge structure comprises a valve bridge body, wherein two circular grooves, namely the first groove and the second groove, are formed in the same surface of the valve bridge body, a first spherical protrusion is arranged on the bottom of the first groove, a second spherical protrusion is arranged on the bottom of the second groove, the center of the first spherical protrusion does not coincide with the center of the first groove, and the center of the second spherical protrusion does not coincide with the center of the second groove. When valve rods are installed in the grooves, certain distances exist between the valve rods and the grooves, a valve bridge can move relative to the valve rods when an engine works, the center of friction force generated during movement is not located at the centers of the valve rods, the moment for rotation of the valve rods is provided by the friction force, and the valve rods can rotate through the cooperation of the moment and corresponding valve rod locks.
Description
Technical field
The invention belongs to engines distribution construction applications, specifically refer to a kind of engine valve bridge construction.
Background technology
Air valve bridge is generally as the key components and partss in single-cam axial-cam engine intake and exhaust mechanism assembly.The function of air valve bridge
It is two valves of the same name that the motion of transmitting on cam and active force are averagely allocated to same cylinder, it is ensured that two valves can be opened simultaneously
Open and close, general air valve bridge is used for single-cam axial-cam engine.
At present, air valve bridge is all made up of the circular groove and long waist shaped groove on air valve bridge body and air valve bridge body.
All it is the arc-shaped convex of flat shape or middle protrusion in the bottom of circular groove or long waist shaped groove.The valve of this kind of structure
Bridge can only provide the reciprocating motion prolonged on valve axis direction to valve.And actual overhead cam or rocking arm are driving air valve bridge
In motor process, except being applied to power of the valve along valve axis direction, also perpendicular to the component of valve axis direction, at present
Air valve bridge design, this part component simply wastes with frictional work.
The content of the invention
It is an object of the invention to provide a kind of new air valve bridge, by this valve bridge construction, except providing axle to valve
To beyond power, the torque for driving valve rotation is also provided.
The present invention is achieved by the following technical solutions：
A kind of engine valve bridge construction, includes air valve bridge body, sets on the same surface of the air valve bridge body
It is equipped with two circular grooves；Respectively the first groove and the second groove；
The bottom of first groove is provided with the first ball-type raised；The bottom of second groove is provided with second
Ball-type is raised；
The raised center of first ball-type is misaligned with the center of first groove；In the second ball-type projection
The heart is misaligned with the center of second groove.
The raised center of first ball-type and the line of centres of first groove, contact perpendicular to rocking arm with air valve bridge
The movement locus of point.
The raised center of second ball-type and the line of centres of second groove, contact perpendicular to rocking arm with air valve bridge
The movement locus of point.
The raised center of first ball-type is that first groove radius are long with the distance at the center of first groove
The 1/2-4/5 of degree.
The raised center of second ball-type is that second groove radius are long with the distance at the center of second groove
The 1/2-4/5 of degree.
First ball-type projection is centrally located at, the company at the center of first groove and the center of second groove
On line or, on the center of first groove and the extended line of the line at the center of second groove.
Second ball-type projection is centrally located at, the company at the center of first groove and the center of second groove
On line or, on the center of first groove and the extended line of the line at the center of second groove.
The raised diameter of first ball-type is identical with the diameter that second ball-type is raised.
The invention has the beneficial effects as follows：
By the technical scheme of the application, ball-type projection, and the raised center of ball-type will be set in two circular grooves
The structure design misaligned with the center of circular groove, after valve stem is arranged in groove, has between valve stem and groove
Certain gap, in engine working process, can produce movement each other between air valve bridge and valve stem, be moved through
The torque that the center of produced frictional force does not rotate at the center of valve stem, this frictional force there is provided valve stem in journey,
Coordinate corresponding valve collet that valve stem can just rotated, by the rotation of valve stem, the abrasion of valve stem can be made
Uniformly, it is to avoid valve eccentric wear occur.
Description of the drawings
Fig. 1 is inventive engine inlet valve bridge construction schematic diagram；
Fig. 2 is inventive engine air inlet raft of pontoons schematic cross-section；
Fig. 3 is the inventive engine air inlet raft of pontoons and valve stem assembling schematic diagram；
Fig. 4 is inventive engine air intake structure schematic diagram.
Description of reference numerals
1 air valve bridge body, 2 first grooves, 3 second grooves, 4 first ball-types projection, 5 second ball-types projection, 6 rocking arms and gas
The line of centres of the movement locus of raft of pontoons contact point, the raised center of 7 first ball-types and the first groove, 8 second ball-types projection
Center and the line of centres of the second groove, the center of 9 first grooves, the center of 10 second grooves, in 11 first ball-types projection
The heart, the raised center of 12 second ball-types, 13 valve stems, 14 rocking arms.
Specific embodiment
By the following examples describing technical scheme in detail, below example be only it is exemplary, only
Can be used for explaining and illustrating technical scheme, and be not to be construed as the restriction to technical solution of the present invention.
The present invention provides a kind of engine valve bridge construction, as shown in Figures 1 to 4, air valve bridge body 1 is included, in institute
State and two circular grooves are provided with the same surface of air valve bridge body 1；Respectively the first groove 2 and the second groove 3；In valve
The surface relative with the first groove 2 and the place surface of the second groove 3 of bridge body 1 is the contact surface of rocking arm 14.In working order, rocking arm
14 is being a straight line, the straight line and first with the movement locus 6 that valve bridging contact is change, rocking arm and valve bridging contact
The center 9 of groove is not parallel with the line at the center 10 of the second groove or overlaps or vertical.
In embodiments herein, the first groove 2 and the second groove 3 are circular groove, in other realities of the application
In applying example, a groove in the first groove 2 and the second groove 3 is non-circular slot, but oval-shaped groove, such structure
It is to ensure error when mounted.
The bottom of first groove 2 is provided with the first ball-type projection 4；It is provided with the bottom of second groove 3
Second ball-type projection 5；In the present embodiment, the diameter of the first ball-type projection 4 is identical with the diameter of the second ball-type projection 5.At this
In the other embodiments of application, the diameter of the first ball-type projection 4 can be differed with the diameter of the second ball-type projection 5, but preferably
Diameter for the first ball-type projection 4 is identical with the diameter of the second ball-type projection 5.As for the raised diameter of the first ball-type and the second ball
The situation that the raised diameter of type can be differed, the axially-movable distance that can cause valve stem of the same name has difference, and of the same name
The rotary speed of valve stem also can difference, at this moment need have required when to timing system adjustment.
The raised center 11 of first ball-type is misaligned with the center 9 of first groove；First ball-type is raised
Center 11 be located at, on the line at the center 10 of the groove of center 9 and second of the first groove or, the center 9 of the first groove with
On the extended line of the line at the center 10 of the second groove.The center 11 of the first ball-type projection and the center of first groove
9 distance is the 1/2-4/5 of the radius length of the first groove 2.
The raised center 12 of second ball-type is misaligned with the center 10 of second groove；Second ball-type is raised
Center 12 be located at, on the line at the center 10 of the groove of center 9 and second of the first groove or, the center 9 of the first groove with
On the extended line of the line at the center 10 of the second groove.The center 12 of the second ball-type projection and the center of second groove
10 distance is the 1/2-4/5 of the radius length of the second groove 3.
The raised center of first ball-type and the line of centres 7 of the first groove, perpendicular to rocking arm and valve bridging contact
Movement locus 6.
The raised center of second ball-type and the line of centres 8 of the second groove, perpendicular to rocking arm and valve bridging contact
Movement locus 6.
After valve stem 13 is arranged in groove, because the raised presence of ball-type, has one between valve stem 13 and groove
Fixed gap, in engine working process, can produce movement each other, in moving process between air valve bridge and valve stem
In produced frictional force center not at the center of valve stem, this frictional force provides the torque of valve stem rotation, matches somebody with somebody
Closing corresponding valve collet rotates just can valve stem, by the rotation of valve stem, the abrasion of valve stem can be made equal
It is even, it is to avoid valve eccentric wear occur.
The air valve bridge simple structure of this structure, it is not necessary to which special valve rotating mechanism can just realize the rotation of valve.
While it have been described that the technical scheme of the application, but, technical scheme of the those skilled in the art in the application
Enlightenment under, can be improved, replace or deform, such improvement, replacement or deformation should be in the guarantor of the application
In the range of shield.
Claims (8)
1. a kind of engine valve bridge construction, includes air valve bridge body, arranges on the same surface of the air valve bridge body
There are two circular grooves；Respectively the first groove and the second groove；It is characterized in that：
The bottom of first groove is provided with the first ball-type raised；The bottom of second groove is provided with the second ball-type
It is raised；
The raised center of first ball-type is misaligned with the center of first groove；The raised center of second ball-type with
The center of second groove is misaligned.
2. engine valve bridge construction according to claim 1, it is characterised in that：The raised center of first ball-type with
The line of centres of first groove, perpendicular to rocking arm and the movement locus of valve bridging contact.
3. engine valve bridge construction according to claim 1, it is characterised in that：The raised center of second ball-type with
The line of centres of second groove, perpendicular to rocking arm and the movement locus of valve bridging contact.
4. engine valve bridge construction according to claim 1, it is characterised in that：The raised center of first ball-type with
The distance at the center of first groove is the 1/2-4/5 of the first groove radius length.
5. engine valve bridge construction according to claim 1, it is characterised in that：The raised center of second ball-type with
The distance at the center of second groove is the 1/2-4/5 of the second groove radius length.
6. engine valve bridge construction according to claim 1, it is characterised in that：The raised centre bit of first ball-type
On, the center of first groove with the line at the center of second groove or, the center of first groove and institute
On the extended line of the line for stating the center of the second groove.
7. engine valve bridge construction according to claim 1, it is characterised in that：The raised centre bit of second ball-type
On, the center of first groove with the line at the center of second groove or, the center of first groove and institute
On the extended line of the line for stating the center of the second groove.
8. engine valve bridge construction according to claim 1, it is characterised in that：The raised diameter of first ball-type with
The raised diameter of second ball-type is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140761.1A CN104712385B (en) | 2015-03-27 | 2015-03-27 | Engine valve bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140761.1A CN104712385B (en) | 2015-03-27 | 2015-03-27 | Engine valve bridge structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712385A CN104712385A (en) | 2015-06-17 |
| CN104712385B true CN104712385B (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140761.1A Active CN104712385B (en) | 2015-03-27 | 2015-03-27 | Engine valve bridge structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712385B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5699762A (en) * | 1994-12-16 | 1997-12-23 | Isuzu Motors Limited | Valve operating system for internal combustion engine |
| CN101240721A (en) * | 2007-02-06 | 2008-08-13 | 浙江黎明发动机零部件有限公司 | Air valve bridge |
| JP2010071090A (en) * | 2008-09-16 | 2010-04-02 | Kubota Corp | Valve gear for engine |
| JP2010096173A (en) * | 2008-09-16 | 2010-04-30 | Kubota Corp | Valve gear for engine |
| CN203403920U (en) * | 2013-08-30 | 2014-01-22 | 广西玉柴机器股份有限公司 | Engine valve bridge |
| CN204511551U (en) * | 2015-03-27 | 2015-07-29 | 安徽江淮汽车股份有限公司 | A kind of engine valve bridge construction |
-
2015
- 2015-03-27 CN CN201510140761.1A patent/CN104712385B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5699762A (en) * | 1994-12-16 | 1997-12-23 | Isuzu Motors Limited | Valve operating system for internal combustion engine |
| CN101240721A (en) * | 2007-02-06 | 2008-08-13 | 浙江黎明发动机零部件有限公司 | Air valve bridge |
| JP2010071090A (en) * | 2008-09-16 | 2010-04-02 | Kubota Corp | Valve gear for engine |
| JP2010096173A (en) * | 2008-09-16 | 2010-04-30 | Kubota Corp | Valve gear for engine |
| CN203403920U (en) * | 2013-08-30 | 2014-01-22 | 广西玉柴机器股份有限公司 | Engine valve bridge |
| CN204511551U (en) * | 2015-03-27 | 2015-07-29 | 安徽江淮汽车股份有限公司 | A kind of engine valve bridge construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104712385A (en) | 2015-06-17 |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Huanglong Inventor after: Pan Yuecheng Inventor after: Mu Lixia Inventor after: Hu Biqian Inventor after: Qian Duode Inventor after: Xu Xun Inventor after: Liu Xinjuan Inventor after: Lan Jian Inventor after: Yu Chunfeng Inventor after: Lu Rongrong Inventor before: Tang Derun Inventor before: Pan Yuecheng Inventor before: Hu Biqian Inventor before: Qian Duode Inventor before: Xu Xun Inventor before: Liu Xinjuan Inventor before: Xu Tao Inventor before: Ou Lijun Inventor before: Yu Chunfeng Inventor before: Lu Rongrong |
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| CB03 | Change of inventor or designer information |