CN213980898U - Cam driven lubricating structure - Google Patents
Cam driven lubricating structure Download PDFInfo
- Publication number
- CN213980898U CN213980898U CN202022332820.4U CN202022332820U CN213980898U CN 213980898 U CN213980898 U CN 213980898U CN 202022332820 U CN202022332820 U CN 202022332820U CN 213980898 U CN213980898 U CN 213980898U
- Authority
- CN
- China
- Prior art keywords
- oil
- shaft
- hole
- oil hole
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Abstract
The utility model belongs to the field of mechanical structure lubrication, and relates to a cam driven lubrication structure, which comprises a cam driven part body, a cam driven part shaft, a roller and a spherical seat, wherein the cam driven part body is connected on the cam driven part shaft; a driven part shaft straight oil hole is arranged on the driven part shaft in a penetrating manner, and a transverse oil hole is arranged in the driven part shaft straight oil hole; the cam driven part body is provided with a driven part straight oil hole which is communicated to the spherical seat oil hole; the straight oil hole of the driven part is communicated to the oil hole of the roller shaft, and lubricating oil is sprayed to the surface of the roller through the oil spraying hole. The utility model discloses a cam driven part body lubricating structure that floats, gyro wheel and roller shaft all can rotate, avoid arbitrary party after the jamming appears, lead to gyro wheel, roller shaft or cam bonding and unusual wearing and tearing to appear.
Description
Technical Field
The utility model belongs to the lubricated field of mechanical structure relates to a cam driven lubrication structure.
Background
The cam driven part body is a single-arm lever which transmits force transmitted by a cam shaft to a push rod through a roller and a roller shaft to push an air inlet rocker arm and an air outlet rocker arm to work, and is a commonly-used air distribution structure in the market of medium-speed machines. The phenomena of adhesion and clamping stagnation are easy to occur between the roller and the roller shaft and between the roller and the cam shaft. When the oil pressure of engine oil is reduced and the oil supply of the roller shaft is insufficient, the roller and the roller shaft are easy to be stuck or stuck, so that the roller and the roller shaft and the roller and the camshaft are bonded or burnt.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a cam driven lubrication structure, which establishes oil film lubrication through a cam driven member body and a roller shaft, so that the roller shaft and the cam driven member body can realize relative movement.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a cam driven lubrication structure comprises a cam driven part body, a cam driven part shaft, a roller and a spherical seat, wherein the cam driven part body is connected to the cam driven part shaft; the driven part shaft is provided with a driven part shaft straight oil hole which penetrates through the driven part shaft, and the two sides of the driven part shaft are provided with an oil inlet hole and an oil outlet hole which are respectively communicated with engine oil of the engine body; a transverse oil hole connected to a cam driven element body is formed in the driven element shaft straight oil hole; the cam driven part body is provided with a driven part straight oil hole communicated with the transverse oil hole, and the driven part straight oil hole is communicated to a spherical seat oil hole arranged in the spherical seat; the straight oil hole of the driven part is communicated to the oil hole of the roller shaft arranged on the roller shaft, and lubricating oil is sprayed to the surface of the roller through the oil spray hole arranged at the end part of the oil hole of the roller shaft.
Optionally, the diameter of the oil inlet hole is larger than that of the oil outlet hole, and pressure difference is formed in the straight oil hole of the driven part shaft through the diameter difference of the oil inlet hole and the oil outlet hole.
Optionally, the spherical seat oil hole includes a first oil hole arranged along a tangential direction of the spherical seat and a second oil hole arranged along a radial direction of the spherical seat, and the second oil hole is used for lubricating an inner cavity of the spherical seat.
Optionally, the diameter of the first oil hole is larger than the diameter of the second oil hole.
Optionally, an oil inlet hole of the roller shaft is formed in the roller shaft, the oil inlet hole of the roller shaft is communicated to the oil hole of the roller shaft, the oil inlet hole of the roller shaft is connected to the longitudinal oil hole of the roller shaft through the transverse oil hole of the roller shaft, and the longitudinal oil hole of the roller shaft leads to a gap between the roller and the roller shaft.
Optionally, a roller bushing is arranged between the roller shaft and the roller, and the longitudinal oil hole of the roller shaft is communicated with an oil groove of the roller bushing to form an oil cavity.
Optionally, a cam follower body bushing is arranged between the cam follower body and the cam follower shaft, a bushing oil hole communicated with the transverse oil hole is formed in the bushing, and the bushing oil hole is communicated to the follower straight oil hole.
Optionally, the cam follower body is axially limited on the cam follower shaft by a circlip for the first shaft.
Optionally, the roller shaft is limited on the cam follower body by a circlip for a second shaft.
Optionally, the roller shaft and the cam driven member body are in clearance fit, oil holes of the roller shaft oil holes at two ends of the roller shaft are chamfered, and an oil cavity is formed between the oil holes and the cam driven member body.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a small hole is direct to spray lubricating oil to the gyro wheel surface, can effectively lubricate gyro wheel and cam, prevents to bond.
2. The utility model discloses a cam follower body lubricating structure that floats can directly assemble the roller shaft to the cam follower body on, does not need cooling roller shaft or heating cam follower body to assemble, can promote assembly efficiency.
3. The utility model discloses a cam driven part body lubricating structure that floats, gyro wheel and roller shaft all can rotate, avoid arbitrary party after the jamming appears, lead to gyro wheel, roller shaft or cam bonding and unusual wearing and tearing to appear.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-2, the reference numbers in the figures refer to the following elements: the oil-saving oil cylinder comprises a cam driven element body 1, a retainer ring 2, an elastic retainer ring 3 for a first shaft, a cam driven element shaft 4, a roller shaft 5, a roller bush 6, a roller 7, a cam driven element body bush 8, a spherical seat 9, an elastic retainer ring 10 for a second shaft, an oil inlet hole 11, a driven element shaft straight oil hole 12, an oil outlet hole 13, a bush oil hole 14, an oil groove 15, a driven element straight oil hole 16, a spherical seat oil hole 17, a roller shaft oil hole 18, an oil injection hole 19, a roller shaft oil inlet hole 20, a roller shaft transverse oil hole 21, a roller shaft longitudinal oil hole 22, a transverse oil hole 23 and a spherical seat oil hole 24.
The utility model relates to a cam driven lubrication structure, which mainly comprises a cam driven part body 1, a cam driven part shaft 4, a roller shaft 5, a roller 7 and a spherical seat 9, wherein the roller 7 is assembled on the roller shaft 2; the spherical seat 9 is cold-mounted on the upper plane of the cam driven member body 1. The roller shaft 5 is connected to the camshaft driven part body 1, the cam driven part body 1 is axially limited by a first shaft elastic retainer ring 10 and is connected to the cam driven part shaft 4, and the cam driven part body is axially limited by a retainer ring and a second shaft elastic retainer ring 3; the cam follower shaft 4 is fixed on the machine body through a bolt.
When the engine works, engine oil from the engine body enters the driven part axial straight oil hole 12 through the oil inlet hole 11 and then returns to the engine body through the oil outlet hole 13, and because the diameter of the oil inlet hole 11 is phi 10 and the diameter of the oil outlet hole 13 is phi 5, a pressure difference is formed between the oil inlet hole 11 and the oil outlet hole; the rest engine oil enters the bush oil hole 14 through the transverse oil hole 23, then enters the oil groove 15 formed by the cam driven element body 1 and the cam driven element body bush 8, then enters the driven element straight oil hole 16, reaches the spherical seat oil hole 17, and then enters the spherical seat oil hole 24 to lubricate the push rod ball head contacted with the spherical seat 9.
On the other hand, the oil from the follower straight oil hole 16 enters the roller shaft oil hole 18, and part of the oil is sprayed to the surface of the roller 7 through the oil spraying hole 19 to lubricate the roller 7 and the cam; the residual engine oil enters the roller shaft transverse oil hole 21 through the roller shaft oil inlet hole 20 and then enters the roller shaft longitudinal oil hole 22 to form an oil cavity together with the oil groove of the roller bush 6, and a uniform oil film is formed on the roller shaft 5 and the roller bush 6 for sufficient lubrication.
The roller shaft 5 is in clearance fit with the cam driven part body 1, oil hole chamfer angles R2 at two ends of the roller shaft 5 and the cam driven part body 1 form an oil cavity, and when oil enters the roller shaft oil hole 18, a uniform oil film is formed between the roller shaft oil hole 18 and the cam driven part body due to high oil pressure, so that a lubricating effect is achieved.
The floating lubrication structure of the cam follower can effectively avoid the phenomena of bonding and clamping stagnation among the roller, the roller shaft and the cam. Both the roller and roller shaft are rotatable, providing two modes of motion, one being disabled and the other being replaced.
The roller 7 and the cam normally run, when the oil pressure of engine oil is reduced and the oil supply of the roller shaft 5 is insufficient, the roller 7 and the roller shaft 5 are easy to be blocked or stuck, at the moment, the roller shaft 5 and the roller 7 are integrated, and the roller shaft 5 can also rotate, so that the phenomenon of blocking or sticking cannot occur, when the fault of low oil pressure of engine oil is eliminated, the roller 7 and the roller shaft 5 can restore to the normal working state, and the roller 7, the roller shaft 5 or the cam is prevented from being bonded and abnormally abraded.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. A cam driven lubricating structure is characterized by comprising a cam driven part body, a cam driven part shaft, a roller and a spherical seat, wherein the cam driven part body is connected to the cam driven part shaft; the driven part shaft is provided with a driven part shaft straight oil hole which penetrates through the driven part shaft, and the two sides of the driven part shaft are provided with an oil inlet hole and an oil outlet hole which are respectively communicated with engine oil of the engine body; a transverse oil hole connected to a cam driven element body is formed in the driven element shaft straight oil hole; the cam driven part body is provided with a driven part straight oil hole communicated with the transverse oil hole, and the driven part straight oil hole is communicated to a spherical seat oil hole arranged in the spherical seat; the straight oil hole of the driven part is communicated to the oil hole of the roller shaft arranged on the roller shaft, and lubricating oil is sprayed to the surface of the roller through the oil spray hole arranged at the end part of the oil hole of the roller shaft.
2. The cam follower lubrication structure as recited in claim 1, wherein the diameter of the oil inlet hole is larger than the diameter of the oil outlet hole, and a pressure difference is formed in the follower shaft oil hole by a difference in the diameters of the oil inlet hole and the oil outlet hole.
3. The cam driven lubrication structure according to claim 1, wherein the spherical seat oil hole includes a first oil hole arranged in a tangential direction of the spherical seat and a second oil hole arranged in a radial direction of the spherical seat, the second oil hole being for lubricating an inner cavity of the spherical seat.
4. The cam follower lubrication structure according to claim 3, wherein the first oil hole has a diameter larger than a diameter of the second oil hole.
5. The cam driven lubrication structure according to claim 1, wherein the roller shaft is provided with a roller shaft oil inlet hole, the roller shaft oil inlet hole is connected to the roller shaft oil hole, the roller shaft oil inlet hole is connected to a roller shaft longitudinal oil hole via a roller shaft lateral oil hole, and the roller shaft longitudinal oil hole is opened to a gap between the roller and the roller shaft.
6. The cam follower lubrication structure of claim 5 wherein a roller bushing is disposed between said roller shaft and said roller, said roller shaft longitudinal oil bore opening into an oil sump disposed in said roller bushing to form an oil chamber.
7. The cam follower lubricating structure according to claim 1, wherein a cam follower body bush is provided between the cam follower body and the cam follower shaft, and a bush oil hole communicating with the transverse oil hole is provided in the bush, and the bush oil hole communicates with the follower straight oil hole.
8. The cam follower lubrication structure of claim 1 wherein the cam follower body is axially retained on the cam follower shaft by a circlip for the first shaft.
9. The cam follower lubrication structure of claim 1 wherein the roller shaft is retained on the cam follower body by a circlip for the second shaft.
10. The cam follower lubrication structure as defined in claim 1 wherein the roller shaft is in clearance fit with the cam follower body, and wherein roller shaft oil hole openings at both ends of the roller shaft are chamfered to form an oil chamber with the cam follower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022332820.4U CN213980898U (en) | 2020-10-19 | 2020-10-19 | Cam driven lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022332820.4U CN213980898U (en) | 2020-10-19 | 2020-10-19 | Cam driven lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980898U true CN213980898U (en) | 2021-08-17 |
Family
ID=77257727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022332820.4U Active CN213980898U (en) | 2020-10-19 | 2020-10-19 | Cam driven lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980898U (en) |
-
2020
- 2020-10-19 CN CN202022332820.4U patent/CN213980898U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213980898U (en) | Cam driven lubricating structure | |
| CN112177701A (en) | Cam driven lubricating structure | |
| US5092125A (en) | Seal | |
| US3326323A (en) | Universal joint with an automatic greasing mechanism | |
| CN207554326U (en) | Plunger and plunger pump/piston motor | |
| CA1240627A (en) | Bearing fail-safe device | |
| JP2011047337A (en) | Swash plate piston pump motor | |
| CN213270967U (en) | Compound sealing device that seals of modularization high-speed gear box | |
| CN207554563U (en) | A kind of thrust plate lubrication system, a kind of thrust plate and a kind of engine | |
| CN217841764U (en) | Hydraulic tappet for aviation piston engine | |
| CN201723578U (en) | Inside screw type enhanced anti-corrosion joint bearing | |
| CN220505479U (en) | Novel connecting rod | |
| US6969073B2 (en) | Chuck assembly with a sealing member | |
| CN210714803U (en) | Lubricating oil pump device for star-type piston four-stroke engine | |
| CN211202592U (en) | Connecting structure of connecting rod and bushing of gasoline engine | |
| CN204552967U (en) | A kind of engine cylinder cap assembly and automobile | |
| CN217682773U (en) | Lightweight crankshaft | |
| CN211258810U (en) | Crankshaft connecting rod assembly | |
| CN214533102U (en) | Motorcycle camshaft | |
| CN209293875U (en) | A kind of rocker arm Roller Shaft | |
| CN100529482C (en) | Rear axle axle sleeve and sealing structure between differential gear axle shaft gear | |
| CN109611251B (en) | Split type high-pressure oil pump camshaft of seat circle | |
| CN217440686U (en) | Be applied to balance shaft of three jar machines | |
| WO2010008362A1 (en) | Piston for internal combustion engine, compressor or the like | |
| CN210265486U (en) | Special main shaft high-precision bearing of CNC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |