CN113339095A - Novel valve driving mechanism - Google Patents
Novel valve driving mechanism Download PDFInfo
- Publication number
- CN113339095A CN113339095A CN202110681398.XA CN202110681398A CN113339095A CN 113339095 A CN113339095 A CN 113339095A CN 202110681398 A CN202110681398 A CN 202110681398A CN 113339095 A CN113339095 A CN 113339095A
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- CN
- China
- Prior art keywords
- spring
- valve
- opening
- disc
- opening spring
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000010705 motor oil Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 240000006413 Prunus persica var. persica Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
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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
- F01L1/02—Valve drive
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
Abstract
The invention provides a novel valve driving mechanism which comprises an opening spring, a moving rod, a rotating shaft, a driving wheel, a valve, a closing spring, a spring disc and a valve rotating mechanism, wherein one end of the closing spring is fixedly connected with the spring disc, and the other end of the closing spring is fixedly connected with the valve rotating mechanism arranged on a cylinder cover; the top end of the valve penetrates through the valve rotating mechanism and is connected with the spring disc; the middle part of the motion rod is connected with the rotating shaft and can rotate along the rotating shaft; one end of the moving rod is in contact fit with the driving wheel, the other end of the moving rod is simultaneously connected with the spring disc and one end of the opening spring, the other end of the opening spring is fixedly connected with the engine body, and the opening spring is in a pre-compression state. The invention adds an opening spring, and the opening motion rule of the valve is controlled by the precompressed opening spring and the motion rod together. The traditional valve is completely opened by depending on a camshaft, and is converted into an opening spring to be shared by a driving wheel, so that the abrasion of the traditional cam is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of valve driving mechanisms, and particularly relates to a novel valve driving mechanism.
Background
The traditional valve driving mechanism comprises an overhead camshaft, a push-and-lift mechanism and the like, all the traditional valve driving mechanism is driven by a cam peach shape, the opening and closing motion law of a valve completely depends on a cam profile, and the design and processing of the cam profile fully consider the speed and the acceleration of the valve and whether the valve rebounds when closed or not. Along with the long-time work of engine, wearing and tearing can appear in traditional camshaft molded lines, has seriously influenced valve normal motion law, further influences engine performance, influences engine life even.
In addition, when the traditional valve driving mechanism works, a lateral force is applied to the valve when the valve moves downwards and is opened, after the valve works for a long time, the rod part and the valve guide pipe are abraded, engine oil leaks to the head part of the valve when the abrasion is serious, and when the valve is opened, the engine oil flows into the cylinder, so that the combustion process and the performance are influenced, and meanwhile, the engine oil consumption of the engine is increased.
Disclosure of Invention
In view of the above, the present invention is directed to a novel valve driving mechanism to reduce the wear of the conventional cam.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a novel valve driving mechanism comprises an opening spring, a moving rod, a rotating shaft, a driving wheel, a valve, a closing spring, a spring disc and a valve rotating mechanism, wherein one end of the closing spring is fixedly connected with the spring disc, and the other end of the closing spring is fixedly connected with the valve rotating mechanism arranged on a cylinder cover; the top end of the valve penetrates through the valve rotating mechanism and is connected with the spring disc; the middle part of the motion rod is connected with the rotating shaft and can rotate along the rotating shaft; one end of the moving rod is in contact fit with the driving wheel, the other end of the moving rod is simultaneously connected with the spring disc and one end of the opening spring, the other end of the opening spring is fixedly connected with the engine body, and the opening spring is in a pre-compression state.
Further, the closing spring and the opening spring are coaxially arranged.
Furthermore, the outer wall of the top of the valve is provided with an annular groove, the annular groove is matched with the bottom structure of the inverted trapezoidal through hole in the middle of the spring disc, and the diameter of the middle through hole of the valve rotating mechanism is larger than the outer diameter of the valve.
Further, the closing spring is a group of springs arranged inside and outside.
Furthermore, the other end of the motion rod is of a cylindrical structure with one open end, and the cylindrical structure is sleeved on the spring disc.
Furthermore, the other end of the opening spring is fixedly connected to the engine body through a fixing device.
Compared with the prior art, the invention has the following advantages:
(1) the invention adds an opening spring which has a certain compression amount, and the opening motion rule of the valve is controlled by the precompressed opening spring and the motion rod. The traditional valve is completely opened by depending on a camshaft, and is converted into an opening spring to be shared by a driving wheel, so that the abrasion of the traditional cam is greatly reduced, and the long-term work and maintenance-free performance of the engine are ensured.
(2) The valve is matched with the spring disc through the annular groove, and the diameter of the middle through hole of the valve rotating mechanism is larger than the outer diameter of the valve, so that the valve is not influenced by the action of lateral force when opening in a downward motion, and the problem of abrasion between the rod part and the valve guide pipe is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a novel valve-driving mechanism according to an embodiment of the present invention.
Description of reference numerals:
the device comprises an opening spring 1, a moving rod 2, a rotating shaft 3, a driving wheel 4, a valve 5, a closing spring 6, a spring disc 7, a valve rotating mechanism 8, a cylinder cover 9 and a fixing device 10.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A novel valve driving mechanism is shown in figure 1 and comprises an opening spring 1, a motion rod 2, a rotating shaft 3, a driving wheel 4, a valve 5, a closing spring 6, a spring disc 7 and a valve rotating mechanism 8,
one end of the closing spring 6 is fixedly connected with the spring disc 7, and the other end of the closing spring is fixedly connected with a valve rotating mechanism 8 arranged on a cylinder cover 9; the top end of the valve 5 penetrates through the valve rotating mechanism 8 and is connected with the spring disc 7;
the middle part of the motion rod 2 is connected with a rotating shaft 3 and can rotate along the rotating shaft 3; one end of the moving rod 2 is in contact fit with the driving wheel 4, the other end of the moving rod is simultaneously connected with the spring disc 7 and one end of the opening spring 1, the other end of the opening spring 1 is fixedly connected with an engine body, the closing spring 6 and the opening spring 1 are coaxially arranged, and the opening spring 1 is in a compressed state.
The closing spring 6 is a set of springs arranged inside and outside.
The other end of the motion rod 2 is a cylindrical structure with one open end, and the cylindrical structure is sleeved on the spring disc 7.
The other end of the opening spring 1 is fixedly connected to the engine body through a fixing device 10.
The outer wall of the top of the valve 5 is provided with an annular groove, the annular groove is matched with the bottom structure of an inverted trapezoidal through hole in the middle of the spring disc 7, the diameter of the through hole in the middle of the valve rotating mechanism 8 is larger than the outer diameter of the valve 5, and the moving rod 2 rotates in a small range around the anticlockwise rotation of the rotating shaft 3 without influencing the vertical movement of the valve 5. When the valve moves downwards and is opened, the valve is not acted by a lateral force, and the problem of abrasion of the rod part and the valve guide pipe is solved.
The invention installs a precompressed opening spring 1 right above the valve 5, the moving rod 2 is in balance condition, the compression force of the opening spring 1 is smaller than the upward spring force of the closing spring 6, and the valve is closed.
When the driving wheel 4 does not drive the motion rod 2, the compression force of the pre-compressed opening spring 1 is smaller than that of the closing spring 6, and the valve 5 is in a closed state; when the driving wheel 4 drives the motion rod 2, the motion rod 2 rotates anticlockwise around the rotating shaft 3, the resultant force of the motion rod and the opening spring 1 is larger than the pre-compression force of the closing spring 6, and the air valve 5 is opened.
The invention adds an opening spring 1, the opening spring 1 has a certain compression amount, and the opening motion rule of the valve 5 is controlled by the precompressed opening spring 1 and the motion rod 2. The traditional valve 5 is completely opened by depending on the compression of a camshaft closing spring and is converted into the opening spring 1 and the driving wheel 4 to share, so that the abrasion of the traditional cam is greatly reduced, and the long-term work and maintenance-free performance of the engine are ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A novel valve driving mechanism is characterized in that: comprises an opening spring (1), a motion rod (2), a rotating shaft (3), a driving wheel (4), an air valve (5), a closing spring (6), a spring disc (7) and an air valve rotating mechanism (8),
one end of the closing spring (6) is fixedly connected with the spring disc (7), and the other end of the closing spring is fixedly connected with a valve rotating mechanism (8) arranged on a cylinder cover (9); the top end of the air valve (5) penetrates through the air valve rotating mechanism (8) to be connected with the spring disc (7);
the middle part of the motion rod (2) is connected with the rotating shaft (3) and can rotate along the rotating shaft (3); one end of the moving rod (2) is in contact fit with the driving wheel (4), the other end of the moving rod is simultaneously connected with the spring disc (7) and one end of the opening spring (1), the other end of the opening spring (1) is fixedly connected with an engine body, and the opening spring (1) is in a pre-compression state.
2. A novel valve drive mechanism according to claim 1, characterized in that: the closing spring (6) and the opening spring (1) are coaxially arranged.
3. A novel valve drive mechanism according to claim 1, characterized in that: the outer wall of the top of the valve (5) is provided with an annular groove, the annular groove is matched with the bottom structure of the inverted trapezoidal through hole in the middle of the spring disc (7), and the diameter of the through hole in the middle of the valve rotating mechanism (8) is larger than the outer diameter of the valve (5).
4. A novel valve drive mechanism according to claim 1, characterized in that: the closing spring (6) is a group of springs arranged inside and outside.
5. A novel valve drive mechanism according to claim 1, characterized in that: the other end of the motion rod (2) is of a cylindrical structure with one open end, and the cylindrical structure is sleeved on the spring disc (7).
6. A novel valve drive mechanism according to claim 1, characterized in that: the other end of the opening spring (1) is fixedly connected to the engine body through a fixing device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681398.XA CN113339095A (en) | 2021-06-18 | 2021-06-18 | Novel valve driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681398.XA CN113339095A (en) | 2021-06-18 | 2021-06-18 | Novel valve driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339095A true CN113339095A (en) | 2021-09-03 |
Family
ID=77477422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110681398.XA Pending CN113339095A (en) | 2021-06-18 | 2021-06-18 | Novel valve driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339095A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119645A (en) * | 1999-02-16 | 2000-09-19 | Dana Corporation | Valve stem seal with non-rotatable retainer |
| US20080035083A1 (en) * | 2006-08-11 | 2008-02-14 | Honda Motor Co., Ltd. | Internal combustion engine having variable valve operating device |
| WO2010078280A2 (en) * | 2009-01-05 | 2010-07-08 | Shanghai Universoon Autoparts Co., Ltd | Engine braking devices and methods |
| CN101968000A (en) * | 2010-09-27 | 2011-02-09 | 奇瑞汽车股份有限公司 | Continuous variable valve lift device and gas distribution mechanism with device |
| CN102758659A (en) * | 2012-08-01 | 2012-10-31 | 浙江吉利汽车研究院有限公司杭州分公司 | Internal-combustion engine valve lock clamp mechanical beneficial to valve rotation |
-
2021
- 2021-06-18 CN CN202110681398.XA patent/CN113339095A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119645A (en) * | 1999-02-16 | 2000-09-19 | Dana Corporation | Valve stem seal with non-rotatable retainer |
| US20080035083A1 (en) * | 2006-08-11 | 2008-02-14 | Honda Motor Co., Ltd. | Internal combustion engine having variable valve operating device |
| WO2010078280A2 (en) * | 2009-01-05 | 2010-07-08 | Shanghai Universoon Autoparts Co., Ltd | Engine braking devices and methods |
| CN101968000A (en) * | 2010-09-27 | 2011-02-09 | 奇瑞汽车股份有限公司 | Continuous variable valve lift device and gas distribution mechanism with device |
| CN102758659A (en) * | 2012-08-01 | 2012-10-31 | 浙江吉利汽车研究院有限公司杭州分公司 | Internal-combustion engine valve lock clamp mechanical beneficial to valve rotation |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |