CN106382139A - Air-trap eccentric wear air distribution mechanism with spherical structure and application method of air-trap eccentric wear air distribution mechanism - Google Patents
Air-trap eccentric wear air distribution mechanism with spherical structure and application method of air-trap eccentric wear air distribution mechanism Download PDFInfo
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- CN106382139A CN106382139A CN201610921919.3A CN201610921919A CN106382139A CN 106382139 A CN106382139 A CN 106382139A CN 201610921919 A CN201610921919 A CN 201610921919A CN 106382139 A CN106382139 A CN 106382139A
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- air valve
- air
- valve stem
- spherical structure
- rocking arm
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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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre 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
- 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
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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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/146—Push-rods
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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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
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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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The invention discloses an air-trap eccentric wear air distribution mechanism with a spherical structure. The air-trap eccentric wear air distribution mechanism comprises a rocker arm, a rotating shaft, an air valve rod, an air valve head, the spherical structure, a structural seat and an air valve guide pipe. The outer end of the rocker arm and an upward jacking device are matched through upward jacking motion. The inner end of the rocker arm passes through the spherical structure and the air valve rod and is matched with the air valve head through downward pressing motion. The air valve rod performs vertical motion along the air valve guide pipe which is arranged outside the air valve rod in a wrapping manner. A spring seat is connected to the bottom of the structural seat. A spring provides restoring force for the air valve rod, and an external thread is arranged on the outer wall of the air valve guide pipe so that lubricating oil can be contained thereon. By means of the air-trap eccentric wear air distribution mechanism, an air valve can be prevented from eccentric wear; assembling efficiency can be improved; in addition, cycle operation of the air valve rod can be achieved automatically; and transmission efficiency can be improved.
Description
Technical field
The present invention relates to a kind of air trapping eccentric wear valve actuating mechanism, more particularly, to a kind of air trapping eccentric wear with spherical structure
Valve actuating mechanism and its using method, it is particularly applicable to arrange spherical structure to absorb horizontal force produced by rocking arm circular motion,
Thus avoiding air valve stem to produce eccentric wear with valve guide extruding.
Background technology
Valve actuating mechanism is the key component of electromotor, and in inlet and outlet stroke, rocking arm promotes air valve to open to electromotor
Open, close.Produce in circular motion in rocking arm work perpendicular to the horizontal force of air valve axis and vertical along air valve axis direction
Power.Air valve can produce horizontal displacement in the presence of horizontal force, and do vertical under vertical force along air valve axis direction
Nogata to linear motion, air valve stem can occur eccentric wear under this two kinds of power effect.Air valve eccentric wear is the common of electromotor actual effect
Phenomenon, particularly gas engine, higher in-cylinder combustion temperature can accelerate air valve to wear and tear, and can cause air valve cavitation pitting when serious.
Authorization Notice No. is CN203879564U, and authorized announcement date is that the utility model patent on October 15th, 2014 is open
A kind of Valve Gear of Diesel of changeable air valve, it includes rocking arm, two air valves, rocker arm shaft and Rocker shaft stand, rocker arm shaft
On be provided with lubricant passage way, rocking-arm air-valve end is provided with inner chamber, is provided with plug, spring, moving mass and piston, rocking arm in inner chamber
On be provided with oil circuit control, oil circuit control one end is arranged on the inwall of rocker shaft hole, the oil circuit control other end be located at inner chamber in
End, rocker arm shaft is provided with electromagnetic valve.Although this utility model is by way of changing valve lift to ensure gazogene
The stability of structure, but it still has following defect：
First, in this utility model, lack necessary guide, air valve stem only moves up and down along longitudinal with itself, Yi Fa
Raw skew, thus and peripheral device, such as spring rubs, and does not only result in the generation of air valve eccentric wear, and can damage parts；
Secondly, in this utility model, what rocking arm was made is upper and lower circular motion, the power that it applies to air valve stem include horizontal component with
Vertical stress component, wherein, horizontal component can order about air valve stem and make horizontal hunting, be easily caused it and shift, again result in gas
The generation of valve eccentric wear.
Content of the invention
The purpose of the present invention is to overcome defect and problem that air valve eccentric wear easily occurs present in prior art, provides one kind
It can be avoided that there is the air trapping eccentric wear valve actuating mechanism with spherical structure and its using method of air valve eccentric wear.
For realizing object above, the technical solution of the present invention is：A kind of air trapping eccentric wear with spherical structure is joined
Mechanism of qi structure, including rocking arm, rotary shaft, air valve stem and air valve head, the middle part of described rocking arm is on the rotary shaft work positioned at its bottom
Arc lower moves, and the outer end of rocking arm and upper ejection device work pushes up motion cooperation, the inner of rocking arm is pushed with the top of air valve stem
Motion cooperation, the bottom of air valve stem with positioned at cylinder cap within air valve head vertical be connected；
Described air trapping eccentric wear valve actuating mechanism also includes spherical structure, structure seat and valve guide, and the inside of described structure seat is opened
It is provided with structure chamber, the diameter in structure chamber, be highly all higher than the diameter of spherical structure, the inner work of the top of spherical structure and rocking arm
Downward motion coordinates, and downward motion cooperation is made on the bottom of spherical structure and the top of air valve stem, and the top of air valve stem is located at structure
The inside in chamber, air valve stem moves up and down along being wrapped in its outside valve guide.
The bottom of described structure seat offers the chamber rod aperture communicating with structure chamber, this chamber rod aperture and structure chamber, spherical structure,
Air valve stem is coaxially disposed, and the diameter of chamber rod aperture is less than the diameter of spherical structure.
Described structure chamber includes structure chamber and lower structure chamber, and described upper structure chamber is communicated with chamber rod aperture through lower structure chamber,
And the diameter with diameter greater than lower structure chamber in upper structure chamber.
Described air trapping eccentric wear valve actuating mechanism also includes closing piece, spring base and spring, the middle part of described spring base with embedded
Its internal closing piece is fixedly connected, and the air valve stem of closing piece and portion therethrough and mistake is fixedly connected, the top of air valve stem with spherical
Downward motion cooperation is made in the bottom of structure, and the bottom of air valve stem passes structure chamber, closing piece successively, vertical with air valve head after cylinder cap connects
Connect；On described air valve stem, the outer cover positioned at the position between spring base, cylinder cap is equipped with spring, the top of this spring and spring base
Bottom surface be fixedly connected, the bottom of spring is fixedly connected with the top surface of cylinder cap, and valve guide be located at spring inside.
Screw thread is provided with the outer wall of described valve guide to shelve lubricating oil；The length of described valve guide is less than or equal to
The shortest length of spring.
Described upper ejection device includes cam and push rod, described cam and top motion cooperation on the bottom work of push rod, push rod
Top is coordinated with top motion on the outer end work of rocking arm, and push rod is parallel to each other with air valve stem.
The bottom of the outer end of described rocking arm is connected with upper top with top motion cooperation on making with the top of push rod, rocking arm interior
End bottom be connected with pressing down section with the top with spherical structure make downward motion cooperation, and upper top, pressing down section be spherical or
Hemispherical dome structure.
A kind of using method of the above-mentioned air trapping eccentric wear valve actuating mechanism with spherical structure, described using method include with
Lower step：
First by upper ejection device along longitudinally top power being applied with to the outer end of rocking arm, so that rocking arm makees downward circular arc fortune around rotary shaft
Dynamic, now, the inner of rocking arm applies a tangential force to spherical structure, and it is vertical with one that this tangential force is decomposed into a horizontal component
Straight component, horizontal component promotes spherical structure to rotate in structure intracavity to be absorbed, and vertical stress component promotes air valve through spherical structure
Bar makees longitudinal downward movement along valve guide, and makes air valve head make longitudinal downward movement inside cylinder cap, and downward movement is tied
Shu Hou, then drive air valve stem to make longitudinal upstroke along valve guide, up air valve stem is through spherical structure in rocking arm
End applies a upper top power, makes spherical structure return simultaneously, and on this, top power drives rocking arm to make downward circular motion around rotary shaft,
So that the outer end of rocking arm pushes ejection device so that its return, think that go up top prepares next time, circulation successively is carried out.
Described air trapping eccentric wear valve actuating mechanism also includes closing piece, spring base and spring, the middle part of described spring base with embedded
Its internal closing piece is fixedly connected, and the air valve stem of closing piece and portion therethrough and mistake is fixedly connected, the top of air valve stem with spherical
Downward motion cooperation is made in the bottom of structure, and the bottom of air valve stem passes structure chamber, closing piece successively, vertical with air valve head after cylinder cap connects
Connect；On described air valve stem, the outer cover positioned at the position between spring base, cylinder cap is equipped with spring, the top of this spring and spring base
Bottom surface be fixedly connected, the bottom of spring is fixedly connected with the top surface of cylinder cap, and valve guide be located at spring inside；Described again
Drive air valve stem to make longitudinal upstroke along valve guide to refer to：Rebound motion made by the spring of compression, the bounce of spring according to
Secondary after spring base, closing piece, a up power is applied to air valve stem, make longitudinal up fortune to order about air valve stem along valve guide
Dynamic.
Described upper ejection device includes cam and push rod, described cam and top motion cooperation on the bottom work of push rod, push rod
Top is coordinated with top motion on the outer end work of rocking arm, and push rod is parallel to each other with air valve stem；Described longitudinally right by upper ejection device edge
The outer end of rocking arm is applied with top power and refers to：In the rotation process of cam, the salient point of cam applies an edge to the bottom of push rod to be indulged
To up power, now, up push rod applies one along longitudinal upper top power to the outer end of rocking arm.
Compared with prior art, beneficial effects of the present invention are：
1st, in a kind of air trapping eccentric wear valve actuating mechanism with spherical structure of the present invention and its using method, in rocking arm and air valve stem
Between be provided with spherical structure to transmit power, during transmission, tangential force that spherical structure can transmit to rocking arm is carried out point
Solution, tangential force is broken down into horizontal component and vertical stress component, and wherein, spherical structure rotates in structure intracavity and divided with absorbing level
Power, meanwhile, spherical structure structure intracavity along its cavity wall longitudinally descending to transmit vertical stress component, now, the power that rocking arm produces is only
Surplus vertical stress component is delivered on air valve stem, does not comprise horizontal component, so that it is guaranteed that air valve stem is longitudinally smoothly moving up and down, no
Shift, prevent the generation of air valve eccentric wear.Therefore, it can be avoided that there is air valve eccentric wear in the present invention.
2nd, in a kind of air trapping eccentric wear valve actuating mechanism with spherical structure of the present invention and its using method, in air valve stem
Equipped with valve guide, during use, air valve stem moves up and down outer cover along being wrapped in its outside valve guide, the drawing of valve guide
Leading effect can not only avoid air valve stem to shift in use, cause air valve eccentric wear, and can be in assembling, to air valve stem
It is positioned in installation.Additionally, also can be threaded in the outer surface of valve guide to contain lubricating oil, thus reduce rubbing
Wipe, avoid the generation of air valve eccentric wear further.Therefore, the present invention can not only avoid air valve eccentric wear, and can improve dress
Join efficiency.
3rd, in a kind of air trapping eccentric wear valve actuating mechanism with spherical structure of the present invention and its using method, including closing piece,
Spring base, spring are with to air valve stem offer restoring force, during use, in the presence of the vertical stress component of rocking arm transmission, air valve stem quilt
Drive descending, meanwhile, spring is driven compression by air valve stem, subsequently, after the vertical stress component of rocking arm transmission weakens or disappears, pressed
The springback of contracting, the bounce that it provides drives the up return of air valve stem, descending in order to carry out air valve stem next time.Cause
This, the present invention not only enables the circular flow of air valve stem, and is performed fully automatic.
4th, in a kind of air trapping eccentric wear valve actuating mechanism with spherical structure of the present invention and its using method, preferably upper top dress
Put including cam and push rod, cam and top motion cooperation on the bottom work of push rod, the top of push rod and the outer end work of rocking arm push up
Motion cooperation, during use, constantly provides step upper top power to push rod by the operation of cam, to maintain air valve stem back and forth to transport
Dynamic is persistently carried out, and simple, transmission efficiency is higher.Therefore, the present invention not only enables air valve stem in longitudinal reciprocal fortune
Dynamic, and transmission efficiency is higher.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is structural representation when spherical structure is pressed down in Fig. 1.
Fig. 3 is the structural representation of structure seat in Fig. 1.
Fig. 4 is the power exploded view of the operation schematic diagram of the inner of rocking arm and its applying power in Fig. 1.
Fig. 5 is to increased cam, the structural representation after push rod in Fig. 1.
In figure：Upper ejection device 1, cam 11, push rod 12, rocking arm 2, upper top 21, pressing down section 22, rotary shaft 23, air valve stem
3rd, air valve head 31, cylinder cap 32, spherical structure 4, structure seat 5, structure chamber 51, upper structure chamber 511, lower structure chamber 512, chamber rod aperture
52nd, valve guide 6, closing piece 7, spring base 8, spring 9.
Specific embodiment
Below in conjunction with brief description and specific embodiment, the present invention is further detailed explanation.
Referring to Fig. 1 to Fig. 5, a kind of air trapping eccentric wear valve actuating mechanism with spherical structure, including rocking arm 2, rotary shaft 23,
Air valve stem 3 and air valve head 31, lower arcuate motion is made around the rotary shaft 23 positioned at its bottom in the middle part of described rocking arm 2, rocking arm 2
Top motion cooperation on outer end and upper ejection device 1 work, the top of the inner of rocking arm 2 and air valve stem 3 is made downward motion and is coordinated, air valve stem
3 bottom with positioned at cylinder cap 32 within air valve head 31 vertical be connected；
Described air trapping eccentric wear valve actuating mechanism also includes spherical structure 4, structure seat 5 and valve guide 6, described structure seat 5 interior
Portion offers structure chamber 51, the diameter in structure chamber 51, is highly all higher than the diameter of spherical structure 4, the top of spherical structure 4 with shake
Downward motion cooperation is made in the inner of arm 2, and downward motion cooperation, air valve stem 3 are made in the top of the bottom of spherical structure 4 and air valve stem 3
Top be located at the inside in structure chamber 51, air valve stem 3 moves up and down along being wrapped in its outside valve guide 6.
The bottom of described structure seat 5 offers the chamber rod aperture 52 communicating with structure chamber 51, this chamber rod aperture 52 and structure chamber 51,
Spherical structure 4, air valve stem 3 are coaxially disposed, and the diameter of chamber rod aperture 52 is less than the diameter of spherical structure 4.
Described structure chamber 51 includes structure chamber 511 and lower structure chamber 512, and described upper structure chamber 511 is through lower structure chamber 512
Communicate with chamber rod aperture 52, and the diameter with diameter greater than lower structure chamber 512 in upper structure chamber 511.
Described air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, the middle part of described spring base 8 with
The closing piece 7 being embedded within portion is fixedly connected, closing piece 7 and portion therethrough and the air valve stem 3 crossed is fixedly connected, the top of air valve stem 3
Downward motion cooperation is made in the bottom of end and spherical structure 4, and the bottom of air valve stem 3 passes structure chamber 51, closing piece 7, cylinder cap 32 successively
Vertical with air valve head 31 afterwards it is connected；On described air valve stem 3, the outer cover positioned at the position between spring base 8, cylinder cap 32 is equipped with bullet
Spring 9, the top of this spring 9 is fixedly connected with the bottom surface of spring base 8, and the bottom of spring 9 is fixedly connected with the top surface of cylinder cap 32, and
Valve guide 6 is located at the inside of spring 9.
It is provided with screw thread to shelve lubricating oil on the outer wall of described valve guide 6；The length of described valve guide 6 be less than etc.
Shortest length in spring 9.
Described upper ejection device 1 includes cam 11 and push rod 12, and described cam 11 is joined with top motion on the bottom work of push rod 12
Close, the top of push rod 12 and the outer end work of rocking arm 2 push up motion cooperation, and push rod 12 is parallel to each other with air valve stem 3.
The bottom of the outer end of described rocking arm 2 is connected with upper top 21 with top motion cooperation on the top work with push rod 12, shakes
The bottom of the inner of arm 2 be connected with pressing down section 22 with the top with spherical structure 4 make downward motion cooperation, and upper top 21, under
Splenium 22 is spherical or hemispherical dome structure.
A kind of using method of the above-mentioned air trapping eccentric wear valve actuating mechanism with spherical structure, described using method include with
Lower step：
First by upper ejection device 1 along longitudinally top power being applied with to the outer end of rocking arm 2, so that rocking arm 2 makees downward circle around rotary shaft 23
Arc moves, and now, the inner of rocking arm 2 applies a tangential force to spherical structure 4, this tangential force be decomposed into a horizontal component with
One vertical stress component, horizontal component promotes spherical structure 4 to rotate to be absorbed in structure chamber 51, and vertical stress component is through spherical structure
4 promotion air valve stems 3 make longitudinal downward movement along valve guide 6, and it is longitudinal descending so that air valve head 31 is made inside cylinder cap 32
Motion, after downward movement terminates, then drives air valve stem 3 to make longitudinal upstroke along valve guide 6, up air valve stem 3 warp
Spherical structure 4 applies a upper top power to the inner of rocking arm 2, makes spherical structure 4 return simultaneously, on this top power drive rocking arm 2 around
Rotary shaft 23 makees downward circular motion, so that the outer end of rocking arm 2 pushes ejection device 1 so that its return, thinks and goes up next time
Prepare in top, circulation successively is carried out.
Described air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, the middle part of described spring base 8 with
The closing piece 7 being embedded within portion is fixedly connected, closing piece 7 and portion therethrough and the air valve stem 3 crossed is fixedly connected, the top of air valve stem 3
Downward motion cooperation is made in the bottom of end and spherical structure 4, and the bottom of air valve stem 3 passes structure chamber 51, closing piece 7, cylinder cap 32 successively
Vertical with air valve head 31 afterwards it is connected；On described air valve stem 3, the outer cover positioned at the position between spring base 8, cylinder cap 32 is equipped with bullet
Spring 9, the top of this spring 9 is fixedly connected with the bottom surface of spring base 8, and the bottom of spring 9 is fixedly connected with the top surface of cylinder cap 32, and
Valve guide 6 is located at the inside of spring 9；Described drive air valve stem 3 to make longitudinal upstroke along valve guide 6 again to refer to：Pressure
Rebound motion made by the spring 9 of contracting, and the bounce of spring 9 is up to air valve stem 3 applying one after spring base 8, closing piece 7 successively
Power, makees longitudinal upstroke to order about air valve stem 3 along valve guide 6.
Described upper ejection device 1 includes cam 11 and push rod 12, and described cam 11 is joined with top motion on the bottom work of push rod 12
Close, the top of push rod 12 and the outer end work of rocking arm 2 push up motion cooperation, and push rod 12 is parallel to each other with air valve stem 3；Described by upper
Ejection device 1 is applied with top power along longitudinal outer end to rocking arm 2 and refers to：In the rotation process of cam 11, the salient point of cam 11 is to pushing away
The bottom of bar 12 applies one along longitudinal up power, and now, up push rod 12 applies one along longitudinally to the outer end of rocking arm 2
Upper top power.
The principle of the present invention is described as follows：
Referring to Fig. 1 to Fig. 5, the present invention arranges spherical structure between air valve stem, rocking arm, and this spherical structure can revolve in any direction
Turn, during use, the horizontal component that rocker motion produces promotes spherical structure to rotate in structure intracavity to absorb horizontal component, with
When, the vertical stress component that rocker motion produces promotes spherical structure along the longitudinal downward movement of the cavity wall work in structure chamber, thus promoting
Air valve stem edge is longitudinally descending, and prevents the generation offseting, and is inherently eliminated air valve eccentric wear.
The effect of valve guide：First, in operation, air valve stem is guided, prevent its deflection or occur with other parts
Friction, extra, valve guide surface setting external screw thread, to contain lubricating oil, reduces or avoids to rub further；Secondly, install
When from guiding function, first open up bullport inserting valve guide, then with valve guide positioning air valve stem to enter to air valve stem
Row is installed, and reduces installation difficulty, improves efficiency of assembling.
Embodiment 1：
Referring to Fig. 1 to Fig. 5, a kind of air trapping eccentric wear valve actuating mechanism with spherical structure, including rocking arm 2, rotary shaft 23, air valve
Bar 3, air valve head 31, spherical structure 4, structure seat 5 and valve guide 6；The middle part of described rocking arm 2 is around the rotary shaft positioned at its bottom
23 make lower arcuate motion, the outer end of rocking arm 2 and top motion cooperation on upper ejection device 1 work, and the inside of described structure seat 5 offers
Structure chamber 51, the diameter in structure chamber 51, is highly all higher than the diameter of spherical structure 4, and the top of spherical structure 4 is interior with rocking arm 2
Downward motion cooperation is made at end, and downward motion cooperation, the top position of air valve stem 3 are made in the top of the bottom of spherical structure 4 and air valve stem 3
In the inside in structure chamber 51, the bottom of air valve stem 3 with positioned at cylinder cap 32 within air valve head 31 vertical be connected, air valve stem 3 is along bag
Move up and down in its outside valve guide 6.
A kind of using method of the above-mentioned air trapping eccentric wear valve actuating mechanism with spherical structure, described using method include with
Lower step：
First by upper ejection device 1 along longitudinally top power being applied with to the outer end of rocking arm 2, so that rocking arm 2 makees downward circle around rotary shaft 23
Arc moves, and now, the inner of rocking arm 2 applies a tangential force to spherical structure 4, this tangential force be decomposed into a horizontal component with
One vertical stress component, horizontal component promotes spherical structure 4 to rotate to be absorbed in structure chamber 51, and vertical stress component is through spherical structure
4 promotion air valve stems 3 make longitudinal downward movement along valve guide 6, and it is longitudinal descending so that air valve head 31 is made inside cylinder cap 32
Motion, after downward movement terminates, then drives air valve stem 3 to make longitudinal upstroke along valve guide 6, up air valve stem 3 warp
Spherical structure 4 applies a upper top power to the inner of rocking arm 2, makes spherical structure 4 return simultaneously, on this top power drive rocking arm 2 around
Rotary shaft 23 makees downward circular motion, so that the outer end of rocking arm 2 pushes ejection device 1 so that its return, thinks and goes up next time
Prepare in top, circulation successively is carried out.
Embodiment 2：
With embodiment 1, difference is substance：
The bottom of described structure seat 5 offers the chamber rod aperture 52 communicating with structure chamber 51, this chamber rod aperture 52 and structure chamber 51, spherical
Structure 4, air valve stem 3 are coaxially disposed, and the diameter of chamber rod aperture 52 is less than the diameter of spherical structure 4.Described structure chamber 51 includes knot
Structure chamber 511 and lower structure chamber 512, described upper structure chamber 511 is communicated with chamber rod aperture 52 through lower structure chamber 512, and upper structure chamber 511
The diameter with diameter greater than lower structure chamber 512.
Embodiment 3：
With embodiment 1, difference is substance：
In structure, this air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, in described spring base 8
Portion is fixedly connected with the closing piece 7 being embedded within portion, closing piece 7 and portion therethrough and the air valve stem 3 crossed is fixedly connected, air valve stem 3
The bottom of top and spherical structure 4 make downward motion cooperation, the bottom of air valve stem 3 passes structure chamber 51, closing piece 7, cylinder successively
Vertical with air valve head 31 it is connected after lid 32；The outside suit at the position between spring base 8, cylinder cap 32 is located on described air valve stem 3
There is spring 9, the top of this spring 9 is fixedly connected with the bottom surface of spring base 8, the bottom of spring 9 is fixing with the top surface of cylinder cap 32 even
Connect, and valve guide 6 is located at the inside of spring 9.
Drive air valve stem 3 to make longitudinal upstroke along valve guide 6 described in use again to refer to：The spring of compression
9 make rebound motion, and the bounce of spring 9 applies a up power to air valve stem 3, successively to order about after spring base 8, closing piece 7
Air valve stem 3 makees longitudinal upstroke along valve guide 6.
Embodiment 4：
With embodiment 1, difference is substance：
In structure, described upper ejection device 1 includes cam 11 and push rod 12, and described cam 11 and the bottom work of push rod 12 push up
Motion cooperation, the top of push rod 12 and the outer end work of rocking arm 2 pushes up motion cooperation, and push rod 12 is parallel to each other with air valve stem 3.
It is applied with top power by upper ejection device 1 along longitudinal outer end to rocking arm 2 described in use to refer to：Cam 11 turn
During dynamic, the salient point of cam 11 applies one along longitudinal up power to the bottom of push rod 12, and now, up push rod 12 is right
The outer end of rocking arm 2 applies one along longitudinal upper top power.
Embodiment 5：
With embodiment 1, difference is substance：
It is provided with screw thread to shelve lubricating oil on the outer wall of described valve guide 6；The length of described valve guide 6 is less than or equal to bullet
The shortest length of spring 9.The bottom of the outer end of described rocking arm 2 is connected with upper top 21 and is joined with top motion on being made with the top of push rod 12
Close, the bottom of the inner of rocking arm 2 is connected with pressing down section 22 and makees downward motion cooperation with the top with spherical structure 4, and upper top
21st, pressing down section 22 is spherical or hemispherical dome structure.
Claims (10)
1. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure, including rocking arm（2）, rotary shaft（23）, air valve stem（3）With
Air valve head（31）, described rocking arm（2）Middle part around the rotary shaft positioned at its bottom（23）Make lower arcuate motion, rocking arm（2）'s
Outer end and upper ejection device（1）Top motion cooperation, rocking arm on work（2）The inner and air valve stem（3）Top make downward motion cooperation,
Air valve stem（3）Bottom with positioned at cylinder cap（32）Internal air valve head（31）Vertical connect it is characterised in that：
Described air trapping eccentric wear valve actuating mechanism also includes spherical structure（4）, structure seat（5）With valve guide（6）, described structure seat
（5）Inside offer structure chamber（51）, structure chamber（51）Diameter, be highly all higher than spherical structure（4）Diameter, spherical junctions
Structure（4）Top and rocking arm（2）The inner make downward motion cooperation, spherical structure（4）Bottom and air valve stem（3）Top make
Downward motion coordinates, air valve stem（3）Top be located at structure chamber（51）Inside, air valve stem（3）Along the air valve being wrapped in its outside
Conduit（6）Move up and down.
2. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 1 it is characterised in that：Described
Structure seat（5）Bottom offer and structure chamber（51）The chamber rod aperture communicating（52）, this chamber rod aperture（52）With structure chamber（51）, ball
Shape structure（4）, air valve stem（3）It is coaxially disposed, chamber rod aperture（52）Diameter be less than spherical structure（4）Diameter.
3. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 2 it is characterised in that：Described
Structure chamber（51）Including upper structure chamber（511）With lower structure chamber（512）, described upper structure chamber（511）Through lower structure chamber（512）With
Chamber rod aperture（52）Communicate, and upper structure chamber（511）With diameter greater than lower structure chamber（512）Diameter.
4. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 1,2 or 3, its feature exists
In：
Described air trapping eccentric wear valve actuating mechanism also includes closing piece（7）, spring base（8）With spring（9）, described spring base（8）In
Portion and the closing piece being embedded within portion（7）It is fixedly connected, closing piece（7）With portion therethrough and cross air valve stem（3）It is fixedly connected, gas
Valve rod（3）Top and spherical structure（4）Bottom make downward motion cooperation, air valve stem（3）Bottom pass structure chamber successively
（51）, closing piece（7）, cylinder cap（32）Afterwards with air valve head（31）Vertical connection；
Described air valve stem（3）Above it is located at spring base（8）, cylinder cap（32）Between position outer cover equipped with spring（9）, this spring
（9）Top and spring base（8）Bottom surface be fixedly connected, spring（9）Bottom and cylinder cap（32）Top surface be fixedly connected, and gas
Valve guide（6）Positioned at spring（9）Inside.
5. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 4 it is characterised in that：Described
Valve guide（6）Outer wall on be provided with screw thread to shelve lubricating oil；Described valve guide（6）Length be less than or equal to spring
（9）Shortest length.
6. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 1,2 or 3, its feature exists
In：Described upper ejection device（1）Including cam（11）With push rod（12）, described cam（11）With push rod（12）Bottom make on top fortune
Dynamic cooperation, push rod（12）Top and rocking arm（2）Outer end make on top motion cooperation, and push rod（12）With air valve stem（3）Mutually
Parallel.
7. a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 6 it is characterised in that：Described
Rocking arm（2）The bottom of outer end be connected with upper top（21）With with push rod（12）Top make on top motion cooperation, rocking arm（2）'s
Inner bottom is connected with pressing down section（22）With with spherical structure（4）Top make downward motion cooperation, and upper top（21）, under
Splenium（22）For spherical or hemispherical dome structure.
8. the using method of the air trapping eccentric wear valve actuating mechanism with spherical structure described in a kind of claim 1, its feature exists
Comprise the following steps in described using method：
First by upper ejection device（1）Along longitudinally to rocking arm（2）Outer end be applied with top power, so that rocking arm（2）Around rotary shaft（23）Make
Downward circular motion, now, rocking arm（2）The inner to spherical structure（4）Apply a tangential force, this tangential force is decomposed into one
Individual horizontal component and a vertical stress component, horizontal component promotes spherical structure（4）In structure chamber（51）Interior rotation, to be absorbed, is hung down
Straight component is through spherical structure（4）Promote air valve stem（3）Along valve guide（6）Make longitudinal downward movement, and make air valve head（31）
In cylinder cap（32）The internal downward movement making longitudinal direction, after downward movement terminates, then drives air valve stem（3）Along valve guide（6）Make
Longitudinal upstroke, up air valve stem（3）Through spherical structure（4）To rocking arm（2）Inner apply a upper top power, simultaneously
Make spherical structure（4）Return, on this, top power drives rocking arm（2）Around rotary shaft（23）Make downward circular motion, so that rocking arm（2）
Outer end push ejection device（1）So that its return, think that go up top prepares next time, circulation successively is carried out.
9. the using method of a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 8, it is special
Levy and be：
Described air trapping eccentric wear valve actuating mechanism also includes closing piece（7）, spring base（8）With spring（9）, described spring base（8）In
Portion and the closing piece being embedded within portion（7）It is fixedly connected, closing piece（7）With portion therethrough and cross air valve stem（3）It is fixedly connected, gas
Valve rod（3）Top and spherical structure（4）Bottom make downward motion cooperation, air valve stem（3）Bottom pass structure chamber successively
（51）, closing piece（7）, cylinder cap（32）Afterwards with air valve head（31）Vertical connection；Described air valve stem（3）Above it is located at spring base（8）, cylinder cap
（32）Between position outer cover equipped with spring（9）, this spring（9）Top and spring base（8）Bottom surface be fixedly connected, bullet
Spring（9）Bottom and cylinder cap（32）Top surface be fixedly connected, and valve guide（6）Positioned at spring（9）Inside；
Described drive air valve stem again（3）Along valve guide（6）Make longitudinal upstroke to refer to：The spring of compression（9）Rebound
Motion, spring（9）Bounce successively through spring base（8）, closing piece（7）Afterwards to air valve stem（3）Apply a up power, to order about
Air valve stem（3）Along valve guide（6）Make longitudinal upstroke.
10. the using method of a kind of air trapping eccentric wear valve actuating mechanism with spherical structure according to claim 8, it is special
Levy and be：
Described upper ejection device（1）Including cam（11）With push rod（12）, described cam（11）With push rod（12）Bottom make on push up
Motion cooperation, push rod（12）Top and rocking arm（2）Outer end make on top motion cooperation, and push rod（12）With air valve stem（3）Phase
Mutually parallel；
Described by upper ejection device（1）Along longitudinally to rocking arm（2）Outer end be applied with top power and refer to：Cam（11）Rotation process
In, cam（11）Salient point to push rod（12）Bottom apply one along longitudinal up power, now, up push rod（12）Right
Rocking arm（2）Outer end apply one along longitudinal upper top power.
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| CN201610921919.3A CN106382139B (en) | 2016-10-21 | 2016-10-21 | A kind of air trap eccentric wear valve actuating mechanism and its application method with spherical structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448252A (en) * | 2017-09-01 | 2017-12-08 | 郭革委 | A kind of valve actuating push rod |
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| EP1479876A1 (en) * | 2003-05-22 | 2004-11-24 | Ntn Corporation | Rocker arm with mechanical lash adjuster |
| US20110030634A1 (en) * | 2009-08-04 | 2011-02-10 | International Engine Intellectual Property Company, Llc | Bridge and pivot foot arrangement for operating engine cylinder valves |
| CN102797526A (en) * | 2012-08-30 | 2012-11-28 | 三一重工股份有限公司 | Rocker arm, rocker arm assembly, engine and engineering machinery |
| CN203430586U (en) * | 2013-07-30 | 2014-02-12 | 浙江和日摇臂有限公司 | Motor rocker |
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| CN106382139B (en) | 2019-09-03 |
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