CN105863766A - Rocker arm assembly - Google Patents
Rocker arm assembly Download PDFInfo
- Publication number
- CN105863766A CN105863766A CN201610383241.8A CN201610383241A CN105863766A CN 105863766 A CN105863766 A CN 105863766A CN 201610383241 A CN201610383241 A CN 201610383241A CN 105863766 A CN105863766 A CN 105863766A
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- valve
- bolt
- arm assembly
- oil ducts
- 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
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
- F01L1/185—Overhead end-pivot rocking arms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
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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
- F01L2309/00—Self-contained lash adjusters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a rocker arm assembly, which is used for reducing the collision of a rocker arm and an air valve and reducing noises of an engine. The rocker arm assembly is characterized in that an elastic mechanism is arranged at the tail end of the rocker arm; and one end of the elastic mechanism is mounted at the tail end of the rocker arm and the other end of the elastic mechanism is in seamless contact with the air valve. Under the condition that the elastic mechanism disclosed by the invention guarantees that the air valve and an air valve seat are tightly closed, the rocker arm keeps seamless contact with an air valve rod end, the collision amplitude of the rocker arm and the air valve is reduced and the noises of the engine are reduced; and a phenomenon that assemblies of an air distributing mechanism fly off when the engine is over-speed can also be effectively avoided.
Description
Technical field
The present invention relates to technical field of engines, be specifically related to a kind of Rocker arm assembly.
Background technology
Owing to being in fast state when the valve actuating mechanism of electromotor works, temperature is higher, extends, will automatically back down valve, make valve be not closed completely with valve seating, cause gas leak phenomenon after being therefore heated such as the part such as valve lifter, valve stem.For avoiding this phenomenon to occur, during design valve actuating mechanism, leaving certain gap at intake and exhaust door rod tail end and rocking arm, this gap is exactly valve clearance.
The valve clearance regulation of rocker arm type valve distribution mechanism can be divided into mechanical type regulation and hydraulic lash adjuster to regulate, and the latter is higher because of its fringe cost, is often only applied on high-grade electromotor.For the valve actuating mechanism of mechanical type regulation, as it is shown in figure 1, when the engine runs, existence due to valve clearance h so that rocking arm frequently collides with valve, and produce certain noise, when engine speed exceedes rated speed, valve actuating mechanism assembly also has the probability flown off.
Summary of the invention
In order to reduce the collision of rocking arm and valve, reduce the noise of electromotor, the invention provides a kind of Rocker arm assembly being provided with elastic mechanism on rocking arm.
The technical solution used in the present invention is as follows:
A kind of Rocker arm assembly, including rocker arm shaft, rocking arm, valve and valve spring, the tail end of described rocking arm is provided with elastic mechanism, and described elastic mechanism one end is arranged on the tail end of described rocking arm, and the other end is seamless with the rod end of described valve to be contacted.
The elastic range of described elastic mechanism is H, described elastic range H more than described valve expand with heat and contract with cold produce deformation.
Described elastic mechanism includes regulating bolt, bolt block and priming lever spring, described regulation bolt is arranged on the tail end of described rocking arm, described bolt block is movably mounted at described regulation bolt lower end, described priming lever spring is arranged between described axle sleeve and rocking arm, the bottom of described bolt block is seamless with the rod end of described valve to be contacted, and the strength force coefficient of described priming lever spring is less than the strength force coefficient of described valve spring.
Described regulation bolt lower end is provided with enlarging section, and the diameter of described enlarging section is more than the big footpath of described regulation bolt；The corresponding described enlarging section of described bolt block is provided with installing hole, and the length of described installing hole is more than the length of described enlarging section, and the orifice position of described installing hole is provided with closing in, and the diameter of described closing in is less than the diameter of described enlarging section.
The lower end of described enlarging section sets bulb, and at the bottom of described installing hole hole, corresponding described bulb is provided with interior concave spherical surface.
Being respectively equipped with a most through oil duct, No. two oil ducts, No. three oil ducts, No. four oil ducts on described rocker arm shaft, rocking arm, regulation bolt, bolt block, described No. four oil ducts are connected to the contact surface of described bolt block and valve.
Described regulation bolt is provided with annular wealthy mouth in the junction of described No. three oil ducts and No. two oil ducts, and the height of the wealthy mouth of described annular is more than the diameter of described No. two oil ducts.
Described rocker arm shaft is tubular structure, and a described oil duct is arranged in the pipe of described rocker arm shaft.
The invention has the beneficial effects as follows:
The elastic mechanism of the present invention is on the premise of ensureing that valve and valve seating are tight shut-off, rocking arm is made to keep seamless contact with valve rod end, reduce the collision amplitude of rocking arm and valve, reduce the noise of electromotor, and when can also be prevented effectively from racing of the engine, cause valve actuating mechanism assembly to fly off.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing rocker arm type valve distribution mechanism.
Fig. 2 is schematic diagram during valve shrinkage in the embodiment of the present invention one.
Fig. 3 is schematic diagram during valve flatulence of heat type in the embodiment of the present invention one.
Fig. 4 is the schematic diagram of bolt block in the embodiment of the present invention one
Fig. 5 is the schematic diagram of the embodiment of the present invention two.
Rocker arm shaft 1, rocking arm 2, valve 3, valve spring 4, regulation bolt 5, bolt block 6, priming lever spring 7, air valve bridge 8, valve seating 11, No. two oil ducts 21 of 9, oil duct, enlarging section 51, three oil duct 52, annular wealthy mouth 53, installing hole 61,62, No. four oil ducts 63 of closing in.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment one, as shown in Figure 2 and Figure 3, a kind of Rocker arm assembly, including rocker arm shaft 1, rocking arm 2, valve 3 and valve spring 4, the tail end of described rocking arm 2 is provided with elastic mechanism, and described elastic mechanism one end is arranged on the tail end of described rocking arm 2, and the other end is seamless with the rod end of described valve 3 to be contacted.In embodiment one, one end that rocking arm 2 contacts with valve 3 is tail end, and the other end is connected with parts such as cams.Elastic mechanism is on the premise of ensureing that valve 3 and valve seating 9 are tight shut-off, rocking arm 2 is made to keep seamless contact with valve 3 rod end, reduce the collision amplitude of rocking arm 2 and valve 3, reduce the noise of electromotor, and when can also be prevented effectively from racing of the engine, cause valve actuating mechanism assembly to fly off.
Embodiment one, as shown in Figure 2 and Figure 3, the range of accommodation of described elastic mechanism is H, described elastic range H more than described valve expand with heat and contract with cold produce deformation.Range of accommodation H of embodiment one elastic mechanism is bigger than valve clearance h, can guarantee that rocking arm 2 keeps seamless contact with the valve 3 rod end moment, it is to avoid make gap occur between valve 3 and valve seating 9 during engine overheat.
Embodiment one, as shown in Figure 2, Figure 3, Figure 4, described elastic mechanism includes regulating bolt 5, bolt block 6 and priming lever spring 7, described regulation bolt 5 is arranged on the tail end of described rocking arm 2, described bolt block 6 is movably mounted at described regulation bolt 5 lower end, described priming lever spring 7 is arranged between described axle sleeve 6 and rocking arm 2, and the bottom of described bolt block 6 is seamless with the rod end of described valve 3 to be contacted, and the strength force coefficient of described priming lever spring 7 is less than the strength force coefficient of described valve spring 4.In embodiment one, use the bolt of classics, bolt block to slide, be equipped with the structure of cylindrical spring, there is simple in construction, stable feature；The strength force coefficient of priming lever spring 7, less than the strength force coefficient of described valve spring 4, prevents priming lever spring 7 and valve spring 4 is compressed so that occur the situation in gap between valve 3 and valve seating 9.
Embodiment one, as shown in Figure 2, Figure 3, Figure 4, described regulation bolt 5 lower end is provided with enlarging section 51, and the diameter of described enlarging section 51 is more than the big footpath of described regulation bolt 5；The corresponding described enlarging section 51 of described bolt block 6 is provided with installing hole 61, and the length of described installing hole 61 is more than the length of described enlarging section 51, and the orifice position of described installing hole 61 is provided with closing in 62, and the diameter of described closing in 62 is less than the diameter of described enlarging section 51.In embodiment one, by being slidably matched of enlarging section 51 and installing hole 61, realize the function of elastic mechanism；Close up and 62 be used for preventing regulating bolt 5 and skid off from installing hole 61, in actual production, can use the modes such as interior jump ring realize closing up 62 function.
Embodiment one, as shown in Figure 2, Figure 3, Figure 4, the lower end of described enlarging section 51 sets bulb, and at the bottom of described installing hole 61 hole, corresponding described bulb is provided with interior concave spherical surface.The contact surface regulating bolt 5 and bolt block 6 in embodiment one is spherical so that bolt block 6 can rotate to an angle, i.e. during rocking arm about 2 around regulation bolt 5, it is ensured that rocking arm 2 keeps seamless contact with the valve 3 rod end moment, reduces the noise of collision.
Embodiment one, as shown in Figure 2, Figure 3, Figure 4, being respectively equipped with 11, No. two oil ducts of a most through oil duct, 52, No. four oil ducts 63 of 21, No. three oil ducts on described rocker arm shaft 1, rocking arm 2, regulation bolt 5, bolt block 6, described No. four oil ducts 63 are connected to the contact surface of described bolt block 6 and valve 3.A succession of continuous print oil duct in embodiment one, for delivering lubricating oil to the contact surface of bolt block 6 and valve 3, reaches to reduce abrasion, extends the effect of valve 3 and bolt block 6 life-span.
Embodiment one, as shown in Figure 2 and Figure 3, described regulation bolt 5 is provided with annular wealthy mouth 53 in the junction of described No. three oil ducts 52 and No. two oil ducts 21, and the height of the wealthy mouth of described annular 53 is more than the diameter of described No. two oil ducts 21.The wealthy mouth of annular 53 of embodiment one, it is ensured that when regulating bolt 5 and finely tuning, No. two oil ducts 21 and No. three oil ducts 52 still can keep good connected state, it is ensured that good lubricating status.
Embodiment one, as shown in Figure 2 and Figure 3, described rocker arm shaft 1 is tubular structure, and a described oil duct 11 is arranged in the pipe of described rocker arm shaft 1.A number oil duct 11 of embodiment one is arranged on the inside of rocker arm shaft 1 so that No. two oil ducts 21 of multiple rocking arms 2 connect with a same oil duct 11, and overall structure is simple, practical, good stability.
Embodiment two, as it is shown in figure 5, the valve actuating mechanism of multiple valve 3 is similar with common many valve distribution mechanisms, arranges an air valve bridge 8, i.e. bolt block 6 bottom surface below bolt block 6 and kept seamless contact with the upper plane moment of air valve bridge 8.
Obviously, the above embodiment of the present invention is intended to be merely illustrative of the present example, and not restriction to embodiments of the present invention.For those of ordinary skill in the field, change or the variation of other multi-forms can also be made on the basis of the above description.Here without also all of embodiment being given poor example.And the obvious change that these connotations belonging to the present invention are amplified out or variation still fall within protection scope of the present invention.
Claims (8)
1. a Rocker arm assembly, including rocker arm shaft (1), rocking arm (2), valve (3) and valve spring (4), it is characterized in that: the tail end of described rocking arm (2) is provided with elastic mechanism, described elastic mechanism one end is arranged on the tail end of described rocking arm (2), and the other end is seamless with the rod end of described valve (3) to be contacted.
Rocker arm assembly the most according to claim 1, it is characterised in that: the elastic range of described elastic mechanism is (H), described elastic range (H) more than described valve (3) expand with heat and contract with cold produce deformation.
Rocker arm assembly the most according to claim 1 and 2, it is characterized in that: described elastic mechanism includes regulating bolt (5), bolt block (6) and priming lever spring (7), described regulation bolt (5) is arranged on the tail end of described rocking arm (2), described bolt block (6) is movably mounted at described regulation bolt (5) lower end, described priming lever spring (7) is arranged between described axle sleeve (6) and rocking arm (2), the bottom of described bolt block (6) is seamless with the rod end of described valve (3) to be contacted, the strength force coefficient of described priming lever spring (7) is less than the strength force coefficient of described valve spring (4).
Rocker arm assembly the most according to claim 3, it is characterised in that: described regulation bolt (5) lower end is provided with enlarging section (51), and the diameter of described enlarging section (51) is more than the big footpath of described regulation bolt (5)；The corresponding described enlarging section of described bolt block (6) (51) is provided with installing hole (61), the length of described installing hole (61) is more than the length of described enlarging section (51), the orifice position of described installing hole (61) is provided with closing in (62), and the diameter of described closing in (62) is less than the diameter of described enlarging section (51).
Rocker arm assembly the most according to claim 4, it is characterised in that: the lower end of described enlarging section (51) sets bulb, and at the bottom of described installing hole (61) hole, corresponding described bulb is provided with interior concave spherical surface.
Rocker arm assembly the most according to claim 4, it is characterized in that: being respectively equipped with a most through oil duct (11), No. two oil ducts (21), No. three oil ducts (52), No. four oil ducts (63) on described rocker arm shaft (1), rocking arm (2), regulation bolt (5), bolt block (6), described No. four oil ducts (63) are connected to the contact surface of described bolt block (6) and valve (3).
Rocker arm assembly the most according to claim 6, it is characterized in that: described regulation bolt (5) is provided with annular wealthy mouth (53) in the junction of described No. three oil ducts (52) Yu No. two oil ducts (21), the height of the wealthy mouth of described annular (53) is more than the diameter of described No. two oil ducts (21).
Rocker arm assembly the most according to claim 6, it is characterised in that: described rocker arm shaft (1) is tubular structure, and a described oil duct (11) is arranged in the pipe of described rocker arm shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383241.8A CN105863766A (en) | 2016-06-02 | 2016-06-02 | Rocker arm assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383241.8A CN105863766A (en) | 2016-06-02 | 2016-06-02 | Rocker arm assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863766A true CN105863766A (en) | 2016-08-17 |
Family
ID=56676525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610383241.8A Pending CN105863766A (en) | 2016-06-02 | 2016-06-02 | Rocker arm assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105863766A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547675A (en) * | 2018-06-04 | 2018-09-18 | 广西玉柴机器股份有限公司 | The engine rocker of valve actuating mechanism impact can be reduced |
| CN110318835A (en) * | 2019-06-11 | 2019-10-11 | 东风商用车有限公司 | A kind of air trap eccentric wear valve actuating mechanism |
| WO2022106907A1 (en) * | 2020-11-20 | 2022-05-27 | Jacobs Vehicle Systems, Inc. | Rocker control in lost motion engine valve actuation systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096257A (en) * | 1935-06-17 | 1937-10-19 | Moorhouse Alfred | Hydraulic valve tappet |
| US2871839A (en) * | 1958-01-13 | 1959-02-03 | Gen Motors Corp | Self-contained hydraulic lash adjuster |
| DE3528348A1 (en) * | 1985-08-07 | 1987-02-19 | Daimler Benz Ag | Hydraulic bucket tappet for a valve gear of internal combustion engines |
| CN201461013U (en) * | 2009-07-10 | 2010-05-12 | 中国第一汽车集团公司 | Internal-combustion engine rocker assembly |
| CN205677684U (en) * | 2016-06-02 | 2016-11-09 | 浙江黎明发动机零部件有限公司 | A kind of Rocker arm assembly |
-
2016
- 2016-06-02 CN CN201610383241.8A patent/CN105863766A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096257A (en) * | 1935-06-17 | 1937-10-19 | Moorhouse Alfred | Hydraulic valve tappet |
| US2871839A (en) * | 1958-01-13 | 1959-02-03 | Gen Motors Corp | Self-contained hydraulic lash adjuster |
| DE3528348A1 (en) * | 1985-08-07 | 1987-02-19 | Daimler Benz Ag | Hydraulic bucket tappet for a valve gear of internal combustion engines |
| CN201461013U (en) * | 2009-07-10 | 2010-05-12 | 中国第一汽车集团公司 | Internal-combustion engine rocker assembly |
| CN205677684U (en) * | 2016-06-02 | 2016-11-09 | 浙江黎明发动机零部件有限公司 | A kind of Rocker arm assembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547675A (en) * | 2018-06-04 | 2018-09-18 | 广西玉柴机器股份有限公司 | The engine rocker of valve actuating mechanism impact can be reduced |
| CN110318835A (en) * | 2019-06-11 | 2019-10-11 | 东风商用车有限公司 | A kind of air trap eccentric wear valve actuating mechanism |
| WO2022106907A1 (en) * | 2020-11-20 | 2022-05-27 | Jacobs Vehicle Systems, Inc. | Rocker control in lost motion engine valve actuation systems |
| US12044152B2 (en) | 2020-11-20 | 2024-07-23 | Jacobs Vehicle Systems, Inc. | Rocker control in lost motion engine valve actuation systems |
| JP7526892B2 (en) | 2020-11-20 | 2024-08-01 | ジェイコブス ビークル システムズ、インコーポレイテッド | Rocker control in lost motion engine valve actuation systems |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |