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A thimble type anti-air valve eccentric wear gas distribution mechanism and its use method

A technology of gas distribution mechanism and anti-air valve, which is applied in the direction of valve details, valve devices, mechanical equipment, etc., can solve the problems of lack of guiding devices, damage to parts, and easy deviation, so as to avoid partial wear of air valves and reduce Friction, to prevent the effect of eccentric wear of the valve

Active Publication Date: 2019-04-30
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, in this utility model, there is a lack of necessary guiding devices, and the air valve rod only moves up and down in the longitudinal direction by itself, which is prone to deviation, thereby rubbing against peripheral devices such as springs, which not only causes the occurrence of eccentric wear of the air valve, but also damage parts;
[0005] Secondly, in this utility model, the rocker arm moves up and down in a circular arc, and the force it exerts on the valve stem includes horizontal component force and vertical component force. Among them, the horizontal component force will drive the valve stem to swing horizontally, which may cause It shifts, which again causes valve wear to occur

Method used

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  • A thimble type anti-air valve eccentric wear gas distribution mechanism and its use method
  • A thimble type anti-air valve eccentric wear gas distribution mechanism and its use method
  • A thimble type anti-air valve eccentric wear gas distribution mechanism and its use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] see Figure 1 to Figure 5 , a thimble type anti-air valve eccentric wear distribution mechanism, including rocker arm 2, rotating shaft 23, valve stem 3, valve head 31, thimble structure 4, structure seat 5 and valve guide 6, the rocker arm The middle part of 2 moves up and down in an arc around the rotating shaft 23 at its bottom, and the outer end of the rocker arm 2 cooperates with the upper top device 1 for upward movement; the inside of the structural seat 5 is provided with a structural cavity 51, and the structural seat 5 The bottom of the bottom is provided with a cavity rod hole 52 communicating with the structural cavity 51. The thimble structure 4 includes a needle valve body 41, a needle valve 42 and an elastic material 43. The needle valve body 41 includes an upper valve body 411 and a lower valve body 412. , the top of the upper valve body 411 is provided with a valve groove 413 to be connected with the needle valve 42, the valve groove 413 and the needle ...

Embodiment 2

[0051] Basic content is the same as embodiment 1, the difference is:

[0052] The needle valve 42 is a T-shaped structure, including an outer horizontal part 421 and an inner vertical part 422 connected vertically, the outer wall of the inner vertical part 422 is wrapped in the inner part of the elastic material 43, and the outer part of the elastic material 43 is connected with the valve groove. The inner walls of 413 are connected, and the outer transverse portion 421 covers the valve groove 413 and the top of the elastic material 43 . The elastic material 43 is a hollow cylindrical structure, the bottom of the inner vertical part 422 and the lower valve body 412 are conical structures, and there is an inner gap 44 between the bottom of the inner vertical part 422 and the elastic material 43, There is an outer gap 53 between the bottom end of the lower valve body 412 and the cavity rod hole 52 .

Embodiment 3

[0054] Basic content is the same as embodiment 1, the difference is:

[0055] Structurally—the air distribution mechanism of the anti-air valve eccentric wear also includes a lock block 7, a spring seat 8 and a spring 9. The middle part of the spring seat 8 is fixedly connected with the lock block 7 embedded in it, and the lock block 7 and the The air valve stem 3 passing through the bottom is fixedly connected, the top of the air valve stem 3 is matched with the bottom of the lower valve body 412 for downward movement, and the bottom end of the air valve stem 3 passes through the lock block 7, the spring 9, and the cylinder head 32 in turn. After that, it is vertically connected with the valve head 31; on the valve rod 3, a spring 9 is set on the outside of the position between the spring seat 8 and the cylinder cover 32, and the top of the spring 9 is fixedly connected with the bottom surface of the spring seat 8, and the spring The bottom of 9 is fixedly connected with the ...

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Abstract

An ejector pin type valve mechanism capable of preventing eccentric wear of an air valve comprises a rocker arm, a rotating shaft, an air valve rod, an air valve head, an ejector pin structure, a structure seat and an air valve guide, wherein the ejector pin mechanism comprises a pin valve body, a pin valve and an elastic material; the pin valve body comprises an upper valve body and a lower valve body; the outer end of the rocker arm is in jacking-up movement fit with a jacking device; the inner end of the rocker arm is in pressing-down movement fit with the air valve head via the ejector pin structure and the air valve rod; the air valve rod moves up and down along the air valve guide which sleeves the air valve rod; a spring seat and a spring are connected with the bottom of the structure seat to provide a restoring force for the air valve rod; and an external thread can be arranged on the outer wall of the air valve guide to hold lubricating oil. The ejector pin type valve mechanism can not only avoid eccentric wear of the air valve and improve the assembly efficiency, but also automatically realize cycle operation of the air valve rod and improve the transfer efficiency.

Description

technical field [0001] The invention relates to an anti-air valve eccentric wear distribution mechanism, in particular to a thimble-type anti-air valve eccentric wear distribution mechanism and its use method, which is particularly suitable for setting a thimble structure and elastic materials to absorb the arc movement of the rocker arm. The generated horizontal force can avoid the eccentric wear caused by the extrusion of the air valve stem and the air valve guide. Background technique [0002] The valve mechanism is the main component of the engine. During the intake and exhaust strokes of the engine, the rocker arm pushes the valve to open and close. The rocker arm moves in a circular arc during work to generate a horizontal force perpendicular to the axis of the valve and a vertical force along the axis of the valve. Under the action of horizontal force, the air valve will produce horizontal displacement, and under the action of vertical force, it will make a vertical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/18F01L1/04
CPCF01L1/04F01L1/18
Inventor 贾李水叶波孙玉涛费立罗辉
Owner DONGFENG COMML VEHICLE CO LTD
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