CN206175012U - Ejector pin type air valve eccentric wear prevention air distribution mechanism - Google Patents
Ejector pin type air valve eccentric wear prevention air distribution mechanism Download PDFInfo
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- CN206175012U CN206175012U CN201621147744.7U CN201621147744U CN206175012U CN 206175012 U CN206175012 U CN 206175012U CN 201621147744 U CN201621147744 U CN 201621147744U CN 206175012 U CN206175012 U CN 206175012U
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- 230000002265 prevention Effects 0.000 title 1
- 230000033001 locomotion Effects 0.000 claims abstract description 62
- 239000013536 elastomeric material Substances 0.000 claims description 32
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 239000012858 resilient material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000013013 elastic material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model provides a thimble type air valve eccentric wear air distribution mechanism, includes rocking arm, rotation axis, air valve rod, air valve head, thimble structure, structure seat and pneumatic valve pipe, the thimble structure includes needle valve body, needle valve and elastic material, and the needle valve body includes valve body and lower valve body, the outer end and the last jacking gear of rocking arm are made the cooperation of top motion, and the inner of rocking arm is done the cooperation of push down motion with the air valve head behind thimble structure, the air valve rod, and the air valve rod is followed the package and is made up-and-down motion in its outside pneumatic valve pipe, and the bottom of structure seat is connected with spring holder, spring in order to provide the restoring force to the air valve rod, and can set up the external screw thread on the outer wall of pneumatic. The design can not only avoid the eccentric wear of the air valve and improve the assembly efficiency, but also automatically realize the circular operation of the air valve rod and improve the transmission efficiency.
Description
Technical field
This utility model is related to a kind of air trapping eccentric wear valve actuating mechanism, more particularly to a kind of thimble-type air trapping eccentric wear distribution
Mechanism, it is particularly applicable to arrange thimble structure, elastomeric material to absorb the horizontal force produced by rocking arm circular motion, so as to avoid
Air valve stem produces 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 perpendicular to the horizontal force of air valve axis and along the vertical of air valve axis direction in circular motion in rocking arm work
Power.Air valve can produce horizontal displacement in the presence of horizontal force, and do vertical along air valve axis direction under vertical force
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 air valve cavitation pitting can be caused when serious.
Authorization Notice No. is CN203879564U, and authorized announcement date is that the utility model patent on October 15th, 2014 is disclosed
A kind of Valve Gear of Diesel of changeable air valve, it includes rocking arm, two air valves, rocker arm shaft and Rocker shaft stands, rocker arm shaft
On be provided with lubricant passage way, rocking-arm air-valve end is provided with inner chamber, and plug, spring, moving mass and piston, rocking arm are provided with 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, is provided with electromagnetic valve on rocker arm shaft.Although the utility model changing valve lift by way of ensureing gazogene
The stability of structure, but it still has following defect：
First, in the utility model, required guide is lacked, air valve stem only moves up and down with itself along longitudinal direction,
Easily shift, so as to peripheral device, such as spring rubs, and does not only result in the generation of air valve eccentric wear, and can damage zero
Part；
Secondly, in the utility model, what rocking arm was made is upper and lower circular motion, and the power that it applies to air valve stem is including level point
Power and vertical stress component, wherein, horizontal component can order about air valve stem and make horizontal hunting, be easily caused it and shift, so as to lead again
Cause the generation of air valve eccentric wear.
The content of the invention
The purpose of this utility model is to overcome defect and problem that air valve eccentric wear easily occurs present in prior art, there is provided
A kind of thimble-type air trapping eccentric wear valve actuating mechanism that can avoid air valve eccentric wear.
To realize object above, technical solution of the present utility model is：A kind of thimble-type air trapping eccentric wear gazogene
Make upper and lower arc around the rotary shaft positioned at its bottom in structure, including rocking arm, rotary shaft, air valve stem and air valve head, the middle part of the rocking arm
Shape is moved, and the outer end of rocking arm coordinates with top motion on upper ejection device work, and downward motion is made in the inner of rocking arm with the top of air valve stem
Coordinate, the bottom of air valve stem is vertical with the air valve head inside cylinder cap to be connected；
The air trapping eccentric wear valve actuating mechanism also includes thimble structure, structure seat and valve guide；The structure seat it is interior
Portion offers structure chamber, and the bottom of structure seat offers the chamber rod aperture communicated with structure chamber, the thimble structure include needle-valve body,
Needle-valve and elastomeric material, the needle-valve body includes upper valve body and lower valve body, valve groove is offered at the top of upper valve body with needle-valve
It is connected, resilient material is filled between valve groove, needle-valve, downward motion cooperation is made in the top of needle-valve with the inner of rocking arm, on
The bottom of valve body is coaxially connected with the plan vertical of lower valve body, under the bottom of lower valve body passes after the rod aperture of chamber and be located at structure seat just
Downward motion cooperation is made on the top of the air valve stem of side, and air valve stem moves up and down along its outside valve guide is wrapped in, upper valve body
Cavity wall of the outer wall along structure chamber slide up and down cooperation, and lower valve body, chamber rod aperture, upper valve body, the diameter in structure chamber increase successively.
The needle-valve is T-type structure, and including the outer transverse part being mutually connected vertically and interior vertical part, the outer wall of the interior vertical part is wrapped up in
In the inside of elastomeric material, the outside of elastomeric material is connected with the inwall of valve groove, and outer transverse part is covered in valve groove, elasticity
The top of material.
The elastomeric material is hollow cylindrical structure, and the interior vertical part, the bottom of lower valve body are conical structure,
There is internal clearance between the bottom of interior vertical part and elastomeric material, there is external series gap between the bottom of lower valve body and chamber rod aperture.
The air trapping eccentric wear valve actuating mechanism also includes closing piece, spring base and spring, the middle part of the spring base with it is 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 and lower valve
Downward motion cooperation is made in the bottom of body, and the bottom of air valve stem passes successively vertical with air valve head after closing piece, spring, cylinder cap connection；
The outer cover at the position being located on the air valve stem between spring base, cylinder cap is equipped with spring, top and the spring base of the spring
Bottom surface is fixedly connected, and the bottom of spring is fixedly connected with the top surface of cylinder cap, and valve guide is located at the inside of spring.
It is provided with screw thread on the outer wall of the valve guide to shelve lubricating oil；The length of the valve guide is less than or equal to
The shortest length of spring.
The upper ejection device includes cam and push rod, and the cam coordinates with top motion on the bottom work of push rod, push rod
Top coordinates 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 the rocking arm be connected with upper top with the top of push rod make on top motion coordinate, rocking arm it is interior
The bottom at end be connected with pressing down section with needle-valve at the top of make downward motion coordinate, and upper top, pressing down section be spherical or hemisphere
Shape structure.
Compared with prior art, the beneficial effects of the utility model are：
1st, in a kind of thimble-type air trapping eccentric wear valve actuating mechanism of this utility model, top is provided between rocking arm and air valve stem
To transmit power, during transmission, thimble structure can decompose needle construction to the tangential force that rocking arm is transmitted, and tangential force is divided
Solve as horizontal component and vertical stress component, wherein, elastomeric material is extruded generation deformation to absorb horizontal component in valve groove, together
When, needle-valve, upper valve body, lower valve body are longitudinally descending to transmit vertical stress component along its cavity wall in structure intracavity, now, what rocking arm was produced
Power only remain vertical stress component be delivered on air valve stem, not comprising horizontal component, so that it is guaranteed that air valve stem longitudinal direction smoothly on move down
It is dynamic, do not shift, prevent the generation of air valve eccentric wear.Therefore, this utility model can avoid air valve eccentric wear.
2nd, in a kind of thimble-type air trapping eccentric wear valve actuating mechanism of this utility model, lead equipped with air valve in the outer cover of air valve stem
Pipe, when using, air valve stem moves up and down along its outside valve guide is wrapped in, and the guiding effect of valve guide can not only keep away
Exempt from air valve stem to shift in use, cause air valve eccentric wear, and air valve stem can be positioned in peace in assembling
Dress.Additionally, can also be threaded to contain lubricating oil in the outer surface of valve guide, so as to reduce friction, gas is further avoided
The generation of valve eccentric wear.Therefore, this utility model can not only avoid air valve eccentric wear, and can improve efficiency of assembling.
3rd, in a kind of thimble-type air trapping eccentric wear valve actuating mechanism of this utility model, including closing piece, spring base, spring are with to gas
Valve rod provide restoring force, when using, rocking arm transmission vertical stress component in the presence of, air valve stem driven it is descending, meanwhile, spring
Driven by air valve stem and compressed, subsequently, after the vertical stress component in rocking arm transmission weakens or disappears, the springback for being compressed, it is carried
For bounce drive the up return of air valve stem, it is descending in order to carry out air valve stem next time.Therefore, this utility model is not only
The circular flow of air valve stem can be realized, and is performed fully automatic.
4th, in a kind of thimble-type air trapping eccentric wear valve actuating mechanism of this utility model, preferably upper ejection device includes cam and pushes away
Bar, cam coordinates with top motion on the bottom work of push rod, and the top of push rod coordinates with top motion on the outer end work of rocking arm, uses
When, constantly step upper top power is provided to push rod by the operation of cam, to maintain, air valve stem is reciprocating persistently to be carried out,
Simple, transmission efficiency is higher.Therefore, this utility model can not only realize reciprocating motion of the air valve stem in longitudinal direction, Er Qiechuan
Pass efficiency higher.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is structural representation when thimble structure is pressed down in Fig. 1.
Fig. 3 is the structural representation of thimble structure in Fig. 1.
Fig. 4 is the power exploded view of the inner operation schematic diagram of rocking arm in Fig. 1 and its applying power.
Fig. 5 is that the structural representation after cam, push rod is increased 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, thimble structure 4, needle-valve body 41, upper valve body 411, lower valve body 412, valve groove 413, needle-valve 42, outer
Transverse part 421, interior vertical part 422, elastomeric material 43, internal clearance 44, structure seat 5, structure chamber 51, chamber rod aperture 52, external series gap 53, air valve
Conduit 6, closing piece 7, spring base 8, spring 9.
Specific embodiment
This utility model is described in further detail below in conjunction with description of the drawings and specific embodiment.
Referring to Fig. 1 to Fig. 5, a kind of thimble-type air trapping eccentric wear valve actuating mechanism, including rocking arm 2, rotary shaft 23, air valve stem 3
With air valve head 31, the middle part of the rocking arm 2 makees lower arcuate motion around the rotary shaft 23 positioned at its bottom, the outer end of rocking arm 2 with
Upper ejection device 1 pushes up motion cooperation on making, and downward motion cooperation, the bottom of air valve stem 3 are made in the inner of rocking arm 2 with the top of air valve stem 3
Hold be connected vertical with the air valve head 31 inside cylinder cap 32；
The air trapping eccentric wear valve actuating mechanism also includes thimble structure 4, structure seat 5 and valve guide 6；The structure seat 5
Inside offer structure chamber 51, the bottom of structure seat 5 offers the chamber rod aperture 52 communicated with structure chamber 51, the thimble structure
4 include needle-valve body 41, needle-valve 42 and elastomeric material 43, and the needle-valve body 41 includes upper valve body 411 and lower valve body 412, upper valve body
411 top offers valve groove 413 to be connected with needle-valve 42, and between valve groove 413, needle-valve 42 resilient material is filled
43, downward motion cooperation is made in the top of needle-valve 42 with the inner of rocking arm 2, and the bottom of upper valve body 411 is hung down with the top of lower valve body 412
Straight coaxially connected, the bottom of lower valve body 412 passes and make with the top of the air valve stem 3 being located at immediately below structure seat 5 after chamber rod aperture 52
Downward motion coordinates, and air valve stem 3 moves up and down along its outside valve guide 6 is wrapped in, and the outer wall of upper valve body 411 is along structure chamber
51 cavity wall slides up and down cooperation, and lower valve body 412, chamber rod aperture 52, upper valve body 411, the diameter in structure chamber 51 increase successively.
The needle-valve 42 is T-type structure, including the outer transverse part 421 being mutually connected vertically and interior vertical part 422, the interior vertical part
422 outer wall is wrapped in the inside of elastomeric material 43, and the outside of elastomeric material 43 is connected with the inwall of valve groove 413, and outer horizontal
Portion 421 is covered in valve groove 413, the top of elastomeric material 43.
The elastomeric material 43 is hollow cylindrical structure, and the interior vertical part 422, the bottom of lower valve body 412 are circle
, there is internal clearance 44, bottom and the chamber rod aperture of lower valve body 412 between the bottom of interior vertical part 422 and elastomeric material 43 in cone structure
There is external series gap 53 between 52.
The air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, the middle part of the spring base 8 with
The closing piece 7 for 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 end and the bottom of lower valve body 412, the bottom of air valve stem 3 pass successively after closing piece 7, spring 9, cylinder cap 32 with
Air valve head 31 vertically connects；The outer cover at the position being located on the air valve stem 3 between spring base 8, cylinder cap 32 is equipped with spring 9,
The top of the 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 air valve
Conduit 6 is located at the inside of spring 9.
It is provided with screw thread on the outer wall of the valve guide 6 to shelve lubricating oil；The length of the valve guide 6 less than etc.
In the shortest length of spring 9.
The upper ejection device 1 includes cam 11 and push rod 12, and the cam 11 is matched somebody with somebody with top motion on the bottom work of push rod 12
Close, the top of push rod 12 coordinates with top motion on the outer end work of rocking arm 2, and push rod 12 is parallel to each other with air valve stem 3.
The bottom of the outer end of the rocking arm 2 is connected with upper top 21 and is coordinated with top motion on making with the top of push rod 12, is shaken
The inner bottom of arm 2 is connected with pressing down section 22 and makees downward motion cooperation, and upper top 21, pressing down section with the top with needle-valve 42
22 is spherical or hemispherical dome structure.
A kind of using method of above-mentioned thimble-type air trapping eccentric wear valve actuating mechanism, the using method is comprised the following steps：
First top power is applied with to the outer end of rocking arm 2 along longitudinal direction by upper ejection device 1, so that rocking arm 2 is made downwards around rotary shaft 23
Circular motion, now, the inner of rocking arm 2 applies a tangential force to needle-valve 42, and the tangential force is decomposed into a horizontal component
With a vertical stress component, horizontal component Jing needle-valves 42 extrude elastomeric material 43 to be absorbed, vertical stress component successively Jing needle-valves 42, on
Valve body 411, the pusher of lower valve body 412 valve rod 3 of taking offence makees longitudinal downward movement along valve guide 6, and makes air valve head 31 in cylinder cap
The downward movement of longitudinal direction is made in 32 inside, after downward movement terminates, then drives air valve stem 3 to make longitudinal up fortune along valve guide 6
Dynamic, up air valve stem 3 applies a upper top Jing after lower valve body 412, upper valve body 411, needle-valve 42 to the inner of rocking arm 2 successively
Power, while making needle-valve body 41, the return of needle-valve 42, pushes up power and drives rocking arm 2 to make downward circular motion around rotary shaft 23 on this, so that
The outer end of rocking arm 2 pushes ejection device 1 so that its return, thinks and go up that top is prepared next time, and circulation successively is carried out.
The air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, the middle part of the spring base 8 with
The closing piece 7 for 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 end and the bottom of lower valve body 412, the bottom of air valve stem 3 pass successively after closing piece 7, spring 9, cylinder cap 32 with
Air valve head 31 vertically connects；The outer cover at the position being located on the air valve stem 3 between spring base 8, cylinder cap 32 is equipped with spring 9,
The top of the 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 air valve
Conduit 6 is located at the inside of spring 9；It is described to drive air valve stem 3 to make longitudinal upstroke along valve guide 6 again to refer to：Compression
Spring 9 makees rebound motion, and the bounce of spring 9 applies a up power Jing after spring base 8, closing piece 7 to air valve stem 3 successively, with
Order about air valve stem 3 and make longitudinal upstroke along valve guide 6.
The upper ejection device 1 includes cam 11 and push rod 12, and the cam 11 is matched somebody with somebody with top motion on the bottom work of push rod 12
Close, the top of push rod 12 coordinates with top motion on the outer end work of rocking arm 2, and push rod 12 is parallel to each other with air valve stem 3；It is described by upper
Ejection device 1 is applied with top power to the outer end of rocking arm 2 and refers to along longitudinal direction：In the rotation process of cam 11, the salient point of cam 11 is to pushing away
The bottom of bar 12 applies the up power along longitudinal direction, and now, up push rod 12 applies one along longitudinal direction to the outer end of rocking arm 2
Upper top power.
Principle of the present utility model is described as follows：
Referring to Fig. 1 to Fig. 5, this utility model arranges thimble structure, structure seat between air valve stem, rocking arm, the thimble knot
Structure includes needle-valve body, needle-valve and elastomeric material, and needle-valve body is slided up and down in the structure intracavity of structure seat, when using, rocker motion
When the tangential force of generation is delivered on needle-valve, tangential force is decomposed into a horizontal component and a vertical stress component, wherein, level point
Power Jing needle-valve is delivered on elastomeric material, and to elastomeric material extruding is produced, and deforms upon elastomeric material so as to by horizontal component
Absorb, at the same time, vertical stress component Jing needle-valves drive successively the cavity wall of upper valve body, lower valve body along structure chamber to make the descending fortune of longitudinal direction
It is dynamic, so as to vertical stress component is delivered on air valve stem, promote air valve stem descending along longitudinal direction, and prevent the generation for offseting, from basic
Upper elimination air valve eccentric wear.
The effect of valve guide：First, air valve stem is guided in operation, prevents its deflection or occur with other parts
Friction, extra, valve guide surface arranges external screw thread and friction is reduced or avoided to contain lubricating oil, further；Secondly, install
When from guiding function, i.e., first open up bullport to insert valve guide, then position air valve stem to enter air valve stem with valve guide
Row is installed, and reduces installation difficulty, improves efficiency of assembling.
Embodiment 1：
Referring to Fig. 1 to Fig. 5, a kind of thimble-type air trapping eccentric wear valve actuating mechanism, including rocking arm 2, rotary shaft 23, air valve stem 3,
Make around the rotary shaft 23 positioned at its bottom at air valve head 31, thimble structure 4, structure seat 5 and valve guide 6, the middle part of the rocking arm 2
Lower arcuate is moved, and the outer end of rocking arm 2 coordinates with top motion on the work of upper ejection device 1；The inside of the structure seat 5 offers structure
Chamber 51, the bottom of structure seat 5 offers the chamber rod aperture 52 communicated with structure chamber 51, and the thimble structure 4 includes needle-valve body 41, pin
Valve 42 and elastomeric material 43, the needle-valve body 41 includes upper valve body 411 and lower valve body 412, and the top of upper valve body 411 offers valve
Groove 413 to be connected with needle-valve 42, between valve groove 413, needle-valve 42 fill resilient material 43, the top of needle-valve 42 with shake
Downward motion cooperation is made in the inner of arm 2, and the bottom of upper valve body 411 is coaxially connected with the plan vertical of lower valve body 412, lower valve body
412 bottom to pass and make downward motion cooperation, air valve with the top of the air valve stem 3 for being located at the underface of structure seat 5 after chamber rod aperture 52
The bottom of bar 3 is vertical with the air valve head 31 inside cylinder cap 32 to be connected, and air valve stem 3 is made along its outside valve guide 6 is wrapped in
Move up and down, the cavity wall of the outer wall of upper valve body 411 along structure chamber 51 slides up and down cooperation, and lower valve body 412, chamber rod aperture 52, on
Valve body 411, the diameter in structure chamber 51 increase successively.
A kind of using method of above-mentioned thimble-type air trapping eccentric wear valve actuating mechanism, the using method is comprised the following steps：
First top power is applied with to the outer end of rocking arm 2 along longitudinal direction by upper ejection device 1, so that rocking arm 2 is made downwards around rotary shaft 23
Circular motion, now, the inner of rocking arm 2 applies a tangential force to needle-valve 42, and the tangential force is decomposed into a horizontal component
With a vertical stress component, horizontal component Jing needle-valves 42 extrude elastomeric material 43 to be absorbed, vertical stress component successively Jing needle-valves 42, on
Valve body 411, the pusher of lower valve body 412 valve rod 3 of taking offence makees longitudinal downward movement along valve guide 6, and makes air valve head 31 in cylinder cap
The downward movement of longitudinal direction is made in 32 inside, after downward movement terminates, then drives air valve stem 3 to make longitudinal up fortune along valve guide 6
Dynamic, up air valve stem 3 applies a upper top Jing after lower valve body 412, upper valve body 411, needle-valve 42 to the inner of rocking arm 2 successively
Power, while making needle-valve body 41, the return of needle-valve 42, pushes up power and drives rocking arm 2 to make downward circular motion around rotary shaft 23 on this, so that
The outer end of rocking arm 2 pushes ejection device 1 so that its return, thinks and go up that top is prepared next time, and circulation successively is carried out.
Embodiment 2：
Substance is with embodiment 1, difference：
The needle-valve 42 is T-type structure, including the outer transverse part 421 being mutually connected vertically and interior vertical part 422, the interior vertical part
422 outer wall is wrapped in the inside of elastomeric material 43, and the outside of elastomeric material 43 is connected with the inwall of valve groove 413, and outer horizontal
Portion 421 is covered in valve groove 413, the top of elastomeric material 43.The elastomeric material 43 is hollow cylindrical structure, described interior
Vertical part 422, the bottom of lower valve body 412 are conical structure, between presence is interior between the bottom of interior vertical part 422 and elastomeric material 43
, there is external series gap 53 between the bottom of lower valve body 412 and chamber rod aperture 52 in gap 44.
Embodiment 3：
Substance is with embodiment 1, difference：
In structure --- this air trapping eccentric wear valve actuating mechanism also includes closing piece 7, spring base 8 and spring 9, the spring base 8
Middle part be fixedly connected with the closing piece 7 in the portion that is embedded within, closing piece 7 and portion therethrough and the air valve stem 3 crossed is fixedly connected, air valve
Downward motion cooperation is made in the top of bar 3 with the bottom of lower valve body 412, and the bottom of air valve stem 3 passes successively closing piece 7, spring 9, cylinder
It is vertical with air valve head 31 after lid 32 to be connected；The outside suit at the position being located on the air valve stem 3 between spring base 8, cylinder cap 32
There is spring 9, the top of the spring 9 is fixedly connected with the bottom surface of spring base 8, the bottom of spring 9 is fixed with the top surface of cylinder cap 32 and connected
Connect, and valve guide 6 is located at the inside of spring 9.
In use --- it is described to drive air valve stem 3 to make longitudinal upstroke along valve guide 6 again to refer to：The spring of compression
9 make rebound motion, and the bounce of spring 9 applies a up power Jing after spring base 8, closing piece 7 to air valve stem 3 successively, to order about
Air valve stem 3 makees longitudinal upstroke along valve guide 6.
Embodiment 4：
Substance is with embodiment 1, difference：
In structure --- the upper ejection device 1 includes cam 11 and push rod 12, and the cam 11 is made with the bottom of push rod 12
Upper top motion coordinates, and the top of push rod 12 coordinates with top motion on the outer end work of rocking arm 2, and push rod 12 is mutual with air valve stem 3 flat
OK.
In use --- it is described by upper ejection device 1 along longitudinal direction to the outer end of rocking arm 2 be applied with top power refer to：Cam 11 turn
During dynamic, the salient point of cam 11 applies the up power along longitudinal direction, now, up push rod 12 pairs to the bottom of push rod 12
The outer end of rocking arm 2 applies the upper top power along longitudinal direction.
Embodiment 5：
Substance is with embodiment 1, difference：
Screw thread is provided with the outer wall of the valve guide 6 to shelve lubricating oil, the length of valve guide 6 is less than or equal to bullet
The shortest length of spring 9.The bottom of the outer end of the rocking arm 2 is connected with upper top 21 and is matched somebody with somebody with pushing up motion on making with the top of push rod 12
Close, the inner bottom of rocking arm 2 is connected with pressing down section 22 to be made downward motion and coordinate with the top with needle-valve 42, and upper top 21,
Pressing down section 22 is spherical or hemispherical dome structure.
Claims (7)
1. a kind of thimble-type air trapping eccentric wear valve actuating mechanism, including rocking arm（2）, rotary shaft（23）, air valve stem（3）With air valve head
（31）, the rocking arm（2）Middle part around positioned at its bottom rotary shaft（23）Make lower arcuate motion, rocking arm（2）Outer end with
Upper ejection device（1）Top motion on work coordinates, rocking arm（2）Inner and air valve stem（3）Top make downward motion cooperation, air valve stem
（3）Bottom be located at cylinder cap（32）Internal air valve head（31）Vertical connection, it is characterised in that：
The air trapping eccentric wear valve actuating mechanism also includes thimble structure（4）, structure seat（5）With valve guide（6）；The structure seat
（5）Inside offer structure chamber（51）, structure seat（5）Bottom offer and structure chamber（51）The chamber rod aperture for communicating（52）,
The thimble structure（4）Including needle-valve body（41）, needle-valve（42）With elastomeric material（43）, the needle-valve body（41）Including upper valve body
（411）With lower valve body（412）, upper valve body（411）Top offer valve groove（413）With with needle-valve（42）It is connected, valve is recessed
Groove（413）, needle-valve（42）Between fill resilient material（43）, needle-valve（42）Top and rocking arm（2）The inner push fortune
It is dynamic to coordinate, upper valve body（411）Bottom and lower valve body（412）Plan vertical it is coaxially connected, lower valve body（412）Bottom pass
Chamber rod aperture（52）Afterwards with positioned at structure seat（5）The air valve stem of underface（3）Top make downward motion cooperation, air valve stem（3）Edge
It is wrapped in its outside valve guide（6）Move up and down, upper valve body（411）Outer wall along structure chamber（51）Cavity wall slide up and down
Coordinate, and lower valve body（412）, chamber rod aperture（52）, upper valve body（411）, structure chamber（51）Diameter increase successively.
2. a kind of thimble-type air trapping eccentric wear valve actuating mechanism according to claim 1, it is characterised in that：The needle-valve（42）
For T-type structure, including the outer transverse part being mutually connected vertically（421）With interior vertical part（422）, the interior vertical part（422）Outer wall wrap up in
In elastomeric material（43）Inside, elastomeric material（43）Outside and valve groove（413）Inwall be connected, and outer transverse part
（421）It is covered in valve groove（413）, elastomeric material（43）Top.
3. a kind of thimble-type air trapping eccentric wear valve actuating mechanism according to claim 2, it is characterised in that：The elastomeric material
（43）For hollow cylindrical structure, the interior vertical part（422）, lower valve body（412）Bottom be conical structure, interior vertical part
（422）Bottom and elastomeric material（43）Between there is internal clearance（44）, lower valve body（412）Bottom and chamber rod aperture（52）Between
There is external series gap（53）.
4. a kind of thimble-type air trapping eccentric wear valve actuating mechanism according to claim 1,2 or 3, it is characterised in that：
The air trapping eccentric wear valve actuating mechanism also includes closing piece（7）, spring base（8）With spring（9）, the spring base（8）In
Portion and the closing piece for 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 lower valve body（412）Bottom make downward motion cooperation, air valve stem（3）Bottom pass closing piece successively
（7）, spring（9）, cylinder cap（32）Afterwards with air valve head（31）Vertical connection；
The air valve stem（3）It is upper to be located at spring base（8）, cylinder cap（32）Between position outer cover be equipped with spring（9）, the 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 thimble-type air trapping eccentric wear valve actuating mechanism according to claim 4, it is characterised in that：The valve guide
（6）Outer wall on be provided with screw thread to shelve lubricating oil；The valve guide（6）Length be less than or equal to spring（9）It is most short
Length.
6. a kind of thimble-type air trapping eccentric wear valve actuating mechanism according to claim 1,2 or 3, it is characterised in that：On described
Ejection device（1）Including cam（11）With push rod（12）, the cam（11）With push rod（12）Bottom make on top motion coordinate, push away
Bar（12）Top and rocking arm（2）Outer end make on top motion coordinate, and push rod（12）With air valve stem（3）It is parallel to each other.
7. a kind of thimble-type air trapping eccentric wear valve actuating mechanism according to claim 6, it is characterised in that：The rocking arm（2）
The bottom of outer end be connected with upper top（21）With with push rod（12）Top make on top motion coordinate, rocking arm（2）It is inner
Bottom is connected with pressing down section（22）With with needle-valve（42）Top make downward motion cooperation, and upper top（21）, pressing down section（22）
For spherical or hemispherical dome structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147744.7U CN206175012U (en) | 2016-10-21 | 2016-10-21 | Ejector pin type air valve eccentric wear prevention air distribution mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147744.7U CN206175012U (en) | 2016-10-21 | 2016-10-21 | Ejector pin type air valve eccentric wear prevention air distribution mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175012U true CN206175012U (en) | 2017-05-17 |
Family
ID=58680379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621147744.7U Withdrawn - After Issue CN206175012U (en) | 2016-10-21 | 2016-10-21 | Ejector pin type air valve eccentric wear prevention air distribution mechanism |
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| CN (1) | CN206175012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382138A (en) * | 2016-10-21 | 2017-02-08 | 东风商用车有限公司 | Ejector pin type air valve eccentric wear prevention air distribution mechanism and use method thereof |
-
2016
- 2016-10-21 CN CN201621147744.7U patent/CN206175012U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382138A (en) * | 2016-10-21 | 2017-02-08 | 东风商用车有限公司 | Ejector pin type air valve eccentric wear prevention air distribution mechanism and use method thereof |
| CN106382138B (en) * | 2016-10-21 | 2019-04-30 | 东风商用车有限公司 | Ejector pin type air valve eccentric wear prevention air distribution mechanism and use method thereof |
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