CN112196635A - Ceramic rocker arm of automobile engine - Google Patents
Ceramic rocker arm of automobile engine Download PDFInfo
- Publication number
- CN112196635A CN112196635A CN202010896472.5A CN202010896472A CN112196635A CN 112196635 A CN112196635 A CN 112196635A CN 202010896472 A CN202010896472 A CN 202010896472A CN 112196635 A CN112196635 A CN 112196635A
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- Prior art keywords
- shaft
- friction
- installation
- rocker arm
- arm
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- 239000000919 ceramic Substances 0.000 title claims abstract description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 52
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 210000001138 tear Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention belongs to the technical field of engine rocker arms, and particularly relates to an automobile engine ceramic rocker arm which comprises a rocker arm body, and an adjusting screw and a friction shaft which are arranged at two ends of the rocker arm body, wherein the adjusting screw and the friction shaft are both fixed with the rocker arm body in a threaded manner; set up removable bushing and friction axle through two continuous friction positions at the rocking arm body, and friction axle and bushing are ceramic material, and ceramic material has higher hardness and wearability, consequently can compensate the problem that current rocking arm individual position easily weares and teares, and the wearing parts all can be dismantled with the rocking arm body and be connected, when appearing damaging, can directly change, reduce the replacement cost, consequently can prolong the life of the rocking arm body, and reduce the use cost of the rocking arm body.
Description
Technical Field
The invention belongs to the technical field of engine rocker arms, and particularly relates to a ceramic rocker arm of an automobile engine.
Background
The rocker arm of the automobile engine is characterized in that the motion and acting force transmitted by a push rod and a cam are changed in direction and transmitted to an air valve to open the air valve, the rocker arm bears a large bending moment in the swinging process, so that the rocker arm has enough strength and rigidity and smaller mass, the rocker arm is made of forged steel, a forged ball, nodular cast iron or aluminum alloy, the rocker arm is a double-arm lever, two arms are unequal in length by taking a rocker arm shaft as a fulcrum, a threaded hole is formed in the end of the short arm and used for screwing an air valve clearance adjusting screw, and the end of the long arm is processed into an arc surface and is a working surface for pushing the air valve.
The valve rocker of the existing automobile engine always swings in the working process, one end of the valve rocker rubs with a valve for a long time, and after the friction is long, the metal piece is abraded, so that a gap is formed between the valve and the rocker, and abnormal sound is generated or the valve rocker cannot normally work.
Disclosure of Invention
The invention provides a ceramic rocker arm of an automobile engine, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a ceramic rocker arm of an automobile engine comprises a rocker arm body, and an adjusting screw and a friction shaft which are arranged at two ends of the rocker arm body, wherein the adjusting screw and the friction shaft are both fixed with the rocker arm body in a threaded manner, the rocker arm body comprises a short arm and a long arm, an installation shaft cylinder is arranged between the short arm and the long arm, the installation shaft cylinder is integrally formed with the short arm and the long arm, a shaft bushing is arranged inside the installation shaft cylinder, the end surface of the shaft bushing is provided with a positioning ring, the shaft bushing is fixedly connected with the installation shaft cylinder through the positioning ring, a screw installation cylinder is arranged at the joint of the short arm and the adjusting screw, the screw installation cylinder is integrally formed with the short arm, an adjusting nut is arranged between the adjusting screw and the screw installation cylinder, a friction shaft installation cylinder is arranged at the joint of the long arm and the friction shaft, and the friction shaft installation cylinder is integrally formed with the long arm, the friction shaft is installed in the friction shaft installation cylinder, a positioning bolt used for fixing the friction shaft installation cylinder is arranged at the other end of the friction shaft installation cylinder, and the positioning bolt is fixed with the friction shaft installation cylinder in a threaded mode.
Preferably, one end of the friction shaft extending into the friction shaft mounting cylinder is provided with a threaded part, and the other end of the friction shaft is provided with a hemispherical working part.
Preferably, a movable groove is formed in the friction shaft mounting cylinder and is close to the threaded portion, a clamping piece extending along the radial direction of the friction shaft is mounted in the movable groove, and a wedge surface matched with the positioning bolt is arranged on the clamping piece, so that when the positioning bolt is screwed down, the clamping piece clamps the friction shaft.
Preferably, the inner wall of the mounting shaft barrel is provided with spline grooves which are uniformly distributed, the outer wall of the shaft bushing is provided with a spline clamping strip matched with the spline grooves, and the spline clamping strip and the shaft bushing are integrally formed.
Preferably, the length of the spline clamping strip is smaller than that of the shaft bushing, so that a stepped groove for mounting the positioning ring is reserved between the spline clamping strip and the shaft bushing.
Preferably, the outer side wall of the positioning ring is provided with male threads, the positioning ring is fixed with the mounting shaft barrel in a threaded manner, and the end face of the positioning ring is provided with a plurality of round holes.
Preferably, the friction shaft and the shaft bushing are made of ceramic materials.
Compared with the prior art, the invention has the beneficial effects that:
according to the rocker arm, the replaceable shaft bushing and the replaceable friction shaft are arranged at the two continuous friction parts of the rocker arm body, the friction shaft and the shaft bushing are made of ceramic materials, and the ceramic materials have higher hardness and wear resistance, so that the problem that the individual parts of the existing rocker arm are easy to wear can be solved, the two wearing parts are detachably connected with the rocker arm body, when the rocker arm is damaged, the rocker arm can be directly replaced, the replacement cost is reduced, the service life of the rocker arm body can be prolonged, and the use cost of the rocker arm body can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a structural diagram illustrating a split state according to the present invention;
fig. 4 is a sectional structure view of a mounting portion of the friction shaft in the present invention.
In the figure: 1. a rocker arm body; 11. a short arm; 12. a long arm; 13. a screw mounting barrel; 14. a friction shaft mounting cylinder; 141. a movable groove; 2. mounting a shaft barrel; 201. a spline groove; 3. adjusting the screw; 31. adjusting the nut; 4. a friction shaft; 41. a working part; 42. a threaded portion; 5. a shaft bushing; 51. spline clamping strips; 6. a positioning ring; 7. positioning the bolt; 71. a clamping member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: a ceramic rocker arm of an automobile engine comprises a rocker arm body 1, and an adjusting screw 3 and a friction shaft 4 which are arranged at two ends of the rocker arm body 1, wherein the adjusting screw 3 and the friction shaft 4 are fixed with the rocker arm body 1 in a threaded manner, the rocker arm body 1 comprises a short arm 11 and a long arm 12, an installation shaft barrel 2 is arranged between the short arm 11 and the long arm 12, the installation shaft barrel 2 is integrally formed with the short arm 11 and the long arm 12, a shaft bushing 5 is arranged in the installation shaft barrel 2, the end surface of the shaft bushing 5 is provided with a positioning ring 6, the shaft bushing 5 is fixedly connected with the installation shaft barrel 2 through the positioning ring 6, a screw installation barrel 13 is arranged at the joint of the short arm 11 and the adjusting screw 3, the screw installation barrel 13 is integrally formed with the short arm 11, an adjusting nut 31 is arranged between the adjusting screw 3 and the screw installation barrel 13, a friction shaft installation barrel 14 is arranged at the joint of the long arm 12 and the friction shaft 4, and the long arm 12, the friction shaft 4 is arranged in the friction shaft mounting cylinder 14, the other end of the friction shaft mounting cylinder 14 is provided with a positioning bolt 7 for fixing the friction shaft mounting cylinder 14, and the positioning bolt 7 is fixed with the friction shaft mounting cylinder 14 in a threaded manner.
In this embodiment, the internally mounted of installation beam barrel 2 has bushing 5, the terminal surface of bushing 5 is equipped with holding ring 6, pass through holding ring 6 fixed connection between bushing 5 and the installation beam barrel 2, friction axle 4 is installed in friction axle installation section of thick bamboo 14, through setting up removable bushing 5 and friction axle 4 at two continuous friction positions of rocking arm body 1, and friction axle 4 and bushing 5 are ceramic material, ceramic material has higher hardness and wearability, consequently, can compensate the easy wearing and tearing problem in current rocking arm individual position, and these two wearing parts all can be dismantled with rocking arm body 1 and be connected, when appearing damaging, can directly change, reduce the replacement cost, consequently, can prolong the life of rocking arm body 1, and reduce the use cost of rocking arm body 1.
Specifically, as shown in fig. 4, one end of the friction shaft 4 extending into the friction shaft mounting cylinder 14 is provided with a threaded portion 42, the other end of the friction shaft 4 is provided with a hemispherical working portion 41, the working portion 41 of the friction shaft 4 is set to be hemispherical, friction between the friction shaft 4 and an engine valve is facilitated, friction area and resistance are reduced, and the other end is provided with the threaded portion 42, so that the friction shaft 4 can be conveniently matched with a clamping piece 71 to fix the friction shaft 4.
Specifically, as shown in fig. 4, a movable groove 141 is formed in the friction shaft mounting cylinder 14 near the threaded portion 42, a clamping member 71 that moves along the radial direction of the friction shaft 4 is installed in the movable groove 141, a wedge surface that engages with the positioning bolt 7 is provided on the clamping member 71, so that when the positioning bolt 7 is tightened, the clamping member 71 clamps the friction shaft 4, and when the movable groove 141 is provided in the friction shaft mounting cylinder 14 and a movable clamping member 71 is installed, the positioning bolt 7 moves up and down on the wedge surface of the clamping member 71 by screwing the position of the positioning bolt 7, so as to control the clamping degree of the clamping member 71 on the friction shaft 4, and to control the clamping degree of the clamping member 71 on the friction shaft 4.
Specifically, as shown in fig. 3, the spline groove 201 that has evenly distributed is seted up on the inside wall of the installation shaft section of thick bamboo 2, be equipped with on the outer wall of bush 5 with spline groove 201 complex spline card strip 51, spline card strip 51 and bush 5 integrated into one piece through setting up spline groove 201 and spline card strip 51, can strengthen the stability of the cooperation between bush 5 and the installation shaft section of thick bamboo 2, avoid circumferential sliding.
Specifically, as shown in fig. 3, the length of spline card strip 51 is less than the length of bushing sleeve 5, so that the stepped groove of installation holding ring 6 is reserved between spline card strip 51 and bushing sleeve 5, the male thread has been seted up on the lateral wall of holding ring 6, holding ring 6 is fixed with 2 spiro unions of installation shaft section of thick bamboo, a plurality of round holes have been seted up to the terminal surface of holding ring 6, through setting up a holding ring 6 at the terminal surface, after the installation shaft sleeve 5, then can fix shaft sleeve 5 at installation shaft section of thick bamboo 2 tip through the mode of screw thread, fix shaft sleeve 5 in the inside of installation shaft section of thick bamboo 2, the round hole of seting up on the lateral wall of holding ring 6, can make things convenient for people's use tool to install and.
Specifically, the friction shaft 4 and the shaft bushing 5 are made of ceramic materials, and the ceramic materials have high hardness and wear resistance, so that the service life is relatively long.
The working principle and the using process of the invention are as follows: when in use, the shaft bushing 5 is installed in the installation shaft barrel 2, after the shaft bushing 5 is installed, the shaft bushing 5 can be fixed at the end part of the installation shaft barrel 2 in a threaded manner, the shaft bushing 5 is fixed in the installation shaft barrel 2, the positioning ring 6 can be conveniently installed and disassembled by people using tools through the round hole formed in the outer side wall of the positioning ring 6, then the friction shaft 4 is installed in the friction shaft installation barrel 14, the positioning bolt 7 is vertically moved on the wedge surface of the clamping piece 71 by screwing the position of the positioning bolt 7, the inward side pressing or loosening of the clamping piece 71 is controlled, so that the clamping degree of the clamping piece 71 on the friction shaft 4 is controlled, when in use, the shaft bushing 5 is installed outside the shaft to rotate, the friction shaft 4 is in friction with an engine valve, and the friction shaft 4 and the shaft bushing 5 are both made of ceramic materials which have higher hardness and wear resistance, therefore, the problem that individual parts of the existing rocker arm are easy to wear can be solved, the two wearing parts are detachably connected with the rocker arm body 1, when the rocker arm is damaged, the two wearing parts can be directly replaced, the replacement cost is reduced, the service life of the rocker arm body 1 can be prolonged, and the use cost of the rocker arm body 1 is reduced.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The ceramic rocker arm of the automobile engine is characterized in that: comprises a rocker body (1), adjusting screws (3) and a friction shaft (4) which are arranged at two ends of the rocker body (1), wherein the adjusting screws (3) and the friction shaft (4) are all fixed with the rocker body (1) in a threaded manner, the rocker body (1) comprises a short arm (11) and a long arm (12), an installation shaft sleeve (2) is arranged between the short arm (11) and the long arm (12), the installation shaft sleeve (2) is integrally formed with the short arm (11) and the long arm (12), a shaft bushing sleeve (5) is arranged inside the installation shaft sleeve (2), a positioning ring (6) is arranged on the end surface of the shaft bushing (5), the shaft bushing (5) is fixedly connected with the installation shaft sleeve (2) through the positioning ring (6), a screw installation sleeve (13) is arranged at the joint of the short arm (11) and the adjusting screws (3), and the screw installation sleeve (13) is integrally formed with the short arm (11), install adjusting nut (31) between adjusting screw (3) and the screw installation section of thick bamboo (13), long arm (12) are equipped with friction axle installation section of thick bamboo (14) with the junction of friction axle (4), a friction axle installation section of thick bamboo (14) and long arm (12) integrated into one piece, install friction axle (4) in a friction axle installation section of thick bamboo (14), the other end of a friction axle installation section of thick bamboo (14) is equipped with positioning bolt (7) that are used for fixed friction axle installation section of thick bamboo (14), positioning bolt (7) with a friction axle installation section of thick bamboo (14) spiro union is fixed.
2. The ceramic rocker arm for the automobile engine as recited in claim 1, wherein: one end of the friction shaft (4) extending into the friction shaft mounting cylinder (14) is provided with a threaded part (42), and the other end of the friction shaft (4) is provided with a hemispherical working part (41).
3. The ceramic rocker arm for the automobile engine as recited in claim 2, wherein: the utility model discloses a friction shaft installation tube, including friction shaft installation tube (14), the inside of friction shaft installation tube (14) is close to screw thread portion (42) department and has seted up movable groove (141), install in movable groove (141) and prolong clamping piece (71) of friction shaft (4) radial movement, be equipped with on clamping piece (71) with positioning bolt (7) complex wedge surface, so that when positioning bolt (7) are screwed up, clamping piece (71) press from both sides tightly friction shaft (4).
4. The ceramic rocker arm for the automobile engine as recited in claim 1, wherein: the mounting shaft sleeve is characterized in that spline grooves (201) which are uniformly distributed are formed in the inner wall of the mounting shaft sleeve (2), spline clamping strips (51) matched with the spline grooves (201) are arranged on the outer wall of the shaft sleeve (5), and the spline clamping strips (51) and the shaft sleeve (5) are integrally formed.
5. The ceramic rocker arm for the automobile engine as recited in claim 4, wherein: the length of spline card strip (51) is less than the length of bushing (5), so that the ladder groove that leaves installation holding ring (6) between spline card strip (51) and bushing (5) in advance.
6. The ceramic rocker arm for the automobile engine as recited in claim 5, wherein: the outer side wall of the positioning ring (6) is provided with male threads, the positioning ring (6) is fixed with the mounting shaft barrel (2) in a threaded mode, and the end face of the positioning ring (6) is provided with a plurality of round holes.
7. The ceramic rocker arm for the automobile engine as recited in any one of claims 1 to 6, wherein: the friction shaft (4) and the shaft bushing (5) are made of ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896472.5A CN112196635A (en) | 2020-08-31 | 2020-08-31 | Ceramic rocker arm of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896472.5A CN112196635A (en) | 2020-08-31 | 2020-08-31 | Ceramic rocker arm of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196635A true CN112196635A (en) | 2021-01-08 |
Family
ID=74005822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010896472.5A Pending CN112196635A (en) | 2020-08-31 | 2020-08-31 | Ceramic rocker arm of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897024A (en) * | 2021-10-29 | 2022-01-07 | 东风商用车有限公司 | Wear-resistant polyether-ether-ketone material for protecting easily worn units and application thereof |
-
2020
- 2020-08-31 CN CN202010896472.5A patent/CN112196635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897024A (en) * | 2021-10-29 | 2022-01-07 | 东风商用车有限公司 | Wear-resistant polyether-ether-ketone material for protecting easily worn units and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210108 |
|
| WD01 | Invention patent application deemed withdrawn after publication |