CN214697982U - Eccentric wear prevention roller type valve rocker arm combination device - Google Patents
Eccentric wear prevention roller type valve rocker arm combination device Download PDFInfo
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- CN214697982U CN214697982U CN202120570358.3U CN202120570358U CN214697982U CN 214697982 U CN214697982 U CN 214697982U CN 202120570358 U CN202120570358 U CN 202120570358U CN 214697982 U CN214697982 U CN 214697982U
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- valve rocker
- roller
- rocker arm
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Abstract
The utility model discloses an eccentric wear prevention roller type valve rocker arm combination device, which comprises a valve rocker arm shaft, a valve rocker arm, a valve adjusting screw and a roller; the valve rocker shaft can rotate by taking the circumference of the valve rocker shaft as a shaft; the valve rocker is arranged on the valve rocker shaft, the valve rocker extends in the radial direction of the valve rocker shaft in the direction far away from the central axis of the valve rocker shaft, and the valve rocker can swing along with the valve rocker shaft by taking the circumference of the valve rocker shaft as an axis and the length of the valve rocker as a radius; the valve adjusting screw is arranged on the valve rocker arm, and the valve rocker arm can drive the valve adjusting screw to swing together; the roller is arranged at the lower end of the valve adjusting screw and can move along with the valve adjusting screw. The utility model discloses a roller type valve rocker composite set who prevents eccentric wear can solve valve eccentric wear and upset problem.
Description
Technical Field
The utility model relates to a valve rocker composite set field especially relates to a roller type valve rocker composite set who prevents eccentric wear.
Background
As shown in figure 3, the valve rocker arm of the prior art is formed by contacting a pressure head with a universal joint with a valve bridge, and the contact surface of the valve bridge is a plane. The valve rocker moves up and down, the valve bridge moves up and down along with the valve rocker pressure head, and the valve bridge drives the valve to move up and down, so that the valve is opened and closed.
The prior art valve rocker arm combination device has the following disadvantages: the valve rocker arm moves up and down by taking the rocker arm shaft as the center and taking the rocker arm as a tangent of the radius R, namely the valve rocker arm does not vertically move up and down, so that the contact point of the rocker arm pressure head and the valve bridge is not fixed. As shown in fig. 3, when the included angles of the rocker arms are respectively a1 and a2, the distance between the pressure head and the valve bridge is a1-a2, the pressure head forms a front-back friction force along the direction a1 to the valve bridge, and the friction drag force further acts on the valve rod, so that the valve is not completely vertically stressed up and down, and is also dragged back and forth by the valve bridge, and finally, the valve is seriously worn forward and backward with the valve seat ring due to incomplete vertical up and down movement.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a roller type valve rocker composite set who prevents eccentric wear, it can solve the valve eccentric wear problem.
In order to achieve the purpose, the utility model provides an eccentric wear prevention roller type valve rocker arm combination device, which comprises a valve rocker arm shaft, a valve rocker arm, a valve adjusting screw and a roller; the valve rocker shaft can rotate by taking the circumference of the valve rocker shaft as a shaft; the valve rocker is arranged on the valve rocker shaft, the valve rocker extends in the radial direction of the valve rocker shaft in the direction far away from the central axis of the valve rocker shaft, and the valve rocker can swing along with the valve rocker shaft by taking the circumference of the valve rocker shaft as an axis and the length of the valve rocker as a radius; the valve adjusting screw is arranged on the valve rocker arm, and the valve rocker arm can drive the valve adjusting screw to swing together; the roller is arranged at the lower end of the valve adjusting screw and can move along with the valve adjusting screw.
In a preferred embodiment, the eccentric wear prevention roller type valve rocker arm combination device further comprises a valve bridge, the valve bridge is arranged below the roller, a contact plane is arranged in the center of the top of the valve bridge, the roller always abuts against the contact plane, and when the roller moves along with the valve adjusting screw, the valve bridge moves along with the roller.
In a preferred embodiment, the roller is capable of rolling about the central axis of the roller.
In a preferred embodiment, the central axis of the roller is perpendicular to the central axis of the valve adjusting screw.
In a preferred embodiment, the roller type valve rocker arm combination device for preventing eccentric wear further comprises valves which are arranged at two ends of the lower part of the valve bridge, and the valves can move along with the valve bridge.
In a preferred embodiment, the central axis of the roller is perpendicular to the line connecting the centers of the valves, as seen in a direction perpendicular to the contact plane.
Compared with the prior art, the utility model discloses a roller type valve rocker composite set who prevents eccentric wear has following beneficial effect: through the setting of gyro wheel, make original sliding contact change rolling contact into, though the contact point of gyro wheel and valve bridge still can change along with the motion of rocking arm, but because the gyro wheel can be rolling, drag around between greatly reduced rocking arm and the valve bridge and get rid of frictional force, remain all be vertically interact power from top to bottom, drag around because the front and back and get rid of frictional force and reduced, drag around using the valve stem and get rid of the motion trend and also reduce, the valve stem just can be close to complete vertical motion from top to bottom, make the valve wearing and tearing more even, the valve upset problem has been avoided.
Drawings
Fig. 1 is an exploded perspective view of an anti-eccentric roller valve rocker arm assembly according to an embodiment of the present invention;
FIG. 2 is a perspective view of an anti-eccentric roller valve rocker arm assembly according to an embodiment of the present invention;
FIG. 3 is a force analysis diagram of a valve rocker arm assembly according to one embodiment of the prior art.
Description of the main reference numerals:
1-valve rocker shaft, 2-valve rocker, 3-valve adjusting screw, 4-roller, 5-valve bridge, 51-contact plane, 6-valve.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 2, the roller type valve rocker arm assembly according to the preferred embodiment of the present invention includes a valve rocker shaft 1, a valve rocker arm 2, a valve adjusting screw 3, a roller 4, a valve bridge 5, and a valve 6.
Referring to fig. 1 to 2, in some embodiments, the valve rocker shaft 1 may rotate around the circumference of the valve rocker shaft 1. The valve rocker arm 2 is arranged on the valve rocker shaft 1, the valve rocker arm 2 extends along the radial direction of the valve rocker shaft 1 in the direction far away from the central axis of the valve rocker shaft 1, and the valve rocker arm 2 can swing along with the valve rocker shaft 1 by taking the circumference of the valve rocker shaft 1 as an axis and the length of the valve rocker arm 2 as a radius. The valve adjusting screw 3 is arranged on the valve rocker 2, and the valve rocker 2 can drive the valve adjusting screw 3 to swing together. The roller 4 is arranged at the lower end of the valve adjusting screw 3 and can move along with the valve adjusting screw 3. The valve bridge 5 is arranged below the roller 4, the top center of the valve bridge 5 is provided with a contact plane 51, the roller 4 always abuts against the contact plane 51, and when the roller 4 moves along with the valve adjusting screw 3, the valve bridge 5 moves along with the roller 4. The air valves 6 are arranged at two ends of the lower part of the air valve bridge 5, and the air valves 6 can move along with the air valve bridge 5.
In some embodiments, the roller 4 can roll around the central axis of the roller 4, and the central axis of the roller 4 is perpendicular to the central axis of the valve adjusting screw 3. The central axis of the roller 4 is perpendicular to the line connecting the centers of the valves 6, viewed in a direction perpendicular to the contact plane 51.
The utility model discloses a2 composite set of gyro wheel 4 formula valve rocker arm of preventing eccentric wear is exactly that the sliding contact with the 3 lower extremes of valve adjusting screw of the contact plane 51 contact of valve bridge 5 has changed into rolling contact, reduces valve bridge 5 to the horizontal pulling force of valve 6, reduces valve 6 upset power most crucial.
In summary, the roller type valve rocker arm assembly of the present invention has the following advantages: through the setting of gyro wheel, make original sliding contact change rolling contact into, though the contact point of gyro wheel and valve bridge still can change along with the motion of rocking arm, but because the gyro wheel can be rolling, drag around between greatly reduced rocking arm and the valve bridge and get rid of frictional force, remain all be vertically interact power from top to bottom, drag around because the front and back and get rid of frictional force and reduced, drag around using the valve stem and get rid of the motion trend and also reduce, the valve stem just can be close to complete vertical motion from top to bottom, make the valve wearing and tearing more even, the valve upset problem has been avoided.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (6)
1. An anti-eccentric roller type valve rocker arm combination device is characterized by comprising:
a valve rocker shaft that is rotatable about a circumferential line of the valve rocker shaft;
the valve rocker arm is arranged on the valve rocker shaft, the valve rocker arm extends in the radial direction of the valve rocker shaft in the direction far away from the central axis of the valve rocker shaft, and the valve rocker arm can swing along with the valve rocker shaft by taking the circumference of the valve rocker shaft as an axis and the length of the valve rocker arm as a radius;
the valve adjusting screw is arranged on the valve rocker arm, and the valve rocker arm can drive the valve adjusting screw to swing together;
and the roller is arranged at the lower end of the valve adjusting screw and can move along with the valve adjusting screw.
2. The anti-eccentric roller valve rocker arm assembly of claim 1, further comprising a valve bridge disposed below the roller, the valve bridge having a contact surface at the top center thereof, the roller always abutting against the contact surface, the valve bridge moving with the roller as the roller moves with the valve adjustment screw.
3. The anti-eccentric roller valve rocker assembly of claim 2, wherein the roller is capable of rolling about a central axis of the roller.
4. The anti-eccentric roller valve rocker assembly of claim 3, in which the central axis of the roller is perpendicular to the central axis of the valve adjustment screw.
5. The anti-eccentric roller valve rocker arm assembly of claim 2, further comprising valves disposed at both ends of a lower portion of the valve bridge, the valves being movable with the valve bridge.
6. The anti-eccentric roller valve rocker assembly of claim 5, in which the central axis of the roller is perpendicular to the line joining the centers of the valves, as viewed in a direction perpendicular to the plane of contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120570358.3U CN214697982U (en) | 2021-03-19 | 2021-03-19 | Eccentric wear prevention roller type valve rocker arm combination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120570358.3U CN214697982U (en) | 2021-03-19 | 2021-03-19 | Eccentric wear prevention roller type valve rocker arm combination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214697982U true CN214697982U (en) | 2021-11-12 |
Family
ID=78571936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120570358.3U Active CN214697982U (en) | 2021-03-19 | 2021-03-19 | Eccentric wear prevention roller type valve rocker arm combination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214697982U (en) |
-
2021
- 2021-03-19 CN CN202120570358.3U patent/CN214697982U/en active Active
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