CN104929712A - Combination device of valve rocker push rod limiting plate of engine - Google Patents
Combination device of valve rocker push rod limiting plate of engine Download PDFInfo
- Publication number
- CN104929712A CN104929712A CN201510250531.0A CN201510250531A CN104929712A CN 104929712 A CN104929712 A CN 104929712A CN 201510250531 A CN201510250531 A CN 201510250531A CN 104929712 A CN104929712 A CN 104929712A
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- CN
- China
- Prior art keywords
- push rod
- valve rocker
- limiting board
- guide sleeve
- rod limiting
- 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.)
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Abstract
The invention discloses a combination device of a valve rocker push rod limiting plate of an engine. Two nylon guide sleeves are symmetrically arranged on a push rod limiting plate body; push rod limiting guide holes are formed in the nylon guide sleeves and comprise rectangular guide grooves and circular abdication holes; the circular abdication holes are communicated with the wide sides of the rectangular guide grooves to form the limiting guide holes; the widths of the rectangular guide grooves are less than the diameter of a ball head of a valve rocker push rod; the diameters of the circular abdication holes are greater than the diameter of the ball head; in order to allow the ball head of the valve rocker push rod to penetrate through the abdication holes, the widths of the rectangular guide grooves allow a rod part of the valve rocker push rod to enter; and internal walls of the long sides of the rectangular guide grooves are in clearance fit with the rod part of the valve rocker push rod. According to the device, clearances between the rectangular guide grooves and the rod part of the valve rocker push rod are reduced; side-to-side swing of the valve rocker push rod in a movement process is avoided; and abrasion of the valve rocker valve rocker push rod to the push rod limiting plate body is avoided.
Description
Technical field
The present invention relates to engine art, be specifically related to a kind of engine valve rocker arm push rod limiting board combination apparatus.
Background technique
Available engine adopts valve rocker push rod to drive valve work, the two ends of described valve rocker push rod are provided with bulb, the bulb of valve rocker push rod one end matches with the tappet of motor, the bulb of the valve rocker push rod the other end matches with valve rocker, valve rocker push rod is through the guide and limit hole of push rod limiting board, by push rod limiting board, guide and limit is carried out to valve rocker push rod, prevent valve rocker push rod from moving left and right.But because valve rocker push rod two ends are provided with bulb, and bulb diameter is larger than the bar portion diameter of valve rocker push rod, when assembling valve rocker push rod, the bulb of valve rocker push rod needs the guide and limit hole through push rod limiting board, the guide and limit hole width of push rod limiting board is greater than the bulb diameter of valve rocker push rod, and the gap therefore between the bar portion of valve rocker push rod and the guide and limit hole of push rod limiting board is large.Valve rocker push rod is in movement process, valve rocker push rod swings in the guide and limit hole of push rod limiting board, because valve rocker push rod swings the excessive frictional force increased push rod limiting board, accelerate the wearing and tearing of push rod limiting board, and swing the excessive valve rocker push rod that also creates and deviate from valve rocker, cause engine misses, thus affect the normal work of motor.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of engine valve rocker arm push rod limiting board combination apparatus being provided, the wearing and tearing of valve rocker push rod to push rod limiting board can be reduced, ensure the normal work of motor.
Object of the present invention can be achieved through the following technical solutions.
A kind of engine valve rocker arm push rod limiting board combination apparatus, comprise push rod limiting board body and valve rocker push rod, described push rod limiting board body is provided with mounting hole, the two ends of described valve rocker push rod are provided with bulb, the diameter of bulb is greater than valve rocker push rod portion diameter, it is characterized in that: described push rod limiting board body is symmetrically arranged with two nylon guide sleeve mounting holes, nylon guide sleeve is fixedly installed respectively in each nylon guide sleeve mounting hole, each nylon guide is provided with the spacing pilot hole of push rod to putting, described spacing pilot hole is made up of rectangular guiding groove and circular resigning hole, circular resigning hole is communicated with the broadside of rectangular guiding groove and forms spacing pilot hole, the width of described rectangular guiding groove is less than the bulb diameter of valve rocker push rod, the diameter of circular resigning hole is greater than the diameter of bulb, for the bulb of valve rocker push rod is through stepping down, the width of rectangular guiding groove enters for valve rocker-arm push-rod bar portion, the bar portion of rectangular guiding flute length limit inwall and valve rocker push rod forms Spielpassung.
Establish the spacing pilot hole of push rod in described nylon guide sleeve, outside is provided with locating slot along girth, and nylon cushion collar is fixed on push rod limiting board body by locating slot.
Described nylon guide is provided with ladder reinforced layer to putting.
Major arc section and the rectangular guiding groove of described circular resigning hole form spacing pilot hole.
The gap in the bar portion of described rectangular guiding flute length limit inwall and valve rocker push rod is 0.2mm ~ 1mm.
Beneficial effect of the present invention: structure of the present invention is simple, push rod limiting board body is symmetrically arranged with two nylon guide sleeves, each nylon guide is provided with the spacing pilot hole of push rod to putting, reduce the frictional force between valve rocker push rod and push rod limiting board body by each nylon guide sleeve.Described spacing pilot hole is made up of rectangular guiding groove and circular resigning hole, the width of rectangular guiding groove is less than the bulb diameter of valve rocker push rod, the diameter of circular resigning hole is greater than the diameter of bulb, for the bulb of valve rocker push rod is through stepping down, the width of rectangular guiding groove enters for valve rocker-arm push-rod bar portion, and the bar portion of rectangular guiding flute length limit inwall and valve rocker push rod forms Spielpassung.The bulb of valve rocker push rod end passes push rod limiting board body by circular resigning hole, therefore the gap between rectangular guiding flute length limit inwall and the bar portion of valve rocker push rod is reduced, valve rocker push rod is prevented to swing in movement process, thus reduce the amplitude of fluctuation of valve rocker, decrease the wearing and tearing of valve rocker push rod to the rectangular guiding groove of nylon guide sleeve, avoid valve rocker push rod to be ground away by push rod limiting board body.
Described nylon guide is provided with ladder reinforced layer to putting.Added the thickness of nylon guide sleeve by ladder reinforced layer, thus enhance the intensity of nylon guide sleeve.
The gap in the bar portion of described rectangular guiding flute length limit inwall and valve rocker push rod is 0.2mm ~ 1mm.Namely this gap is convenient to valve rocker push rod and is moved up and down, and prevents again valve rocker push rod to swing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of nylon guide sleeve of the present invention;
Fig. 3 is the structural representation that nylon guide sleeve of the present invention is arranged on push rod limiting board body;
Fig. 4 is the A-A sectional view of Fig. 3 of the present invention;
Fig. 5 is the B-B sectional view of Fig. 3 of the present invention;
Fig. 6 is using state figure of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
See shown in Fig. 1 to Fig. 6, a kind of engine valve rocker arm push rod limiting board combination apparatus, comprise push rod limiting board body 1 and valve rocker push rod 5, described push rod limiting board body 1 adopts sheet metal, push rod limiting board body 1 is provided with two mounting holes 2 and a push rod limiting board resigning hole, the two ends of described valve rocker push rod 5 are provided with bulb 5-1, and the diameter of bulb 5-1 is greater than valve rocker push rod 5 bar portion diameter; Described push rod limiting board body 1 is also symmetrically arranged with two nylon guide sleeve mounting holes, nylon guide sleeve 4 is fixedly installed respectively in each nylon guide sleeve mounting hole, each nylon guide sleeve 4 is provided with the spacing pilot hole 3 of push rod, described nylon guide sleeve mounting hole can adopt rectangular hole, also can be corresponding with spacing pilot hole 3.Described spacing pilot hole 3 is made up of rectangular guiding groove 3-1 and circular resigning hole 3-2, circular resigning hole 3-2 is communicated with the broadside of rectangular guiding groove 3-1 and forms spacing pilot hole 3, the opening of described circular resigning hole 3-2 is equal with the broadside of rectangular guiding groove 3-1, and major arc section and the rectangular guiding groove 3-1 of described circular resigning hole 3-2 form spacing pilot hole 3.The width of described rectangular guiding groove 3-1 is less than the bulb 5-1 diameter of valve rocker push rod 5, the diameter of circular resigning hole 3-2 is greater than the diameter of bulb 5-1, for the bulb of valve rocker push rod 5 is through stepping down, the width of rectangular guiding groove 3-1 enters for valve rocker-arm push-rod 5 bar portion, and the bar portion of rectangular guiding flute length limit 3-1 inwall and valve rocker push rod 5 forms Spielpassung.The gap in the bar portion of described rectangular guiding groove 3-1 long limit inwall and valve rocker push rod 5 is 0.2mm ~ 1mm.The bulb 5-1 of valve rocker push rod 5 one end passes push rod limiting board body 1 by the circular resigning hole 3-2 of nylon guide sleeve 4, the bulb 5-1 of valve rocker push rod 5 is through after push rod limiting board body 1, the bar portion of valve rocker push rod 5 is slided into the rectangular guiding groove 3-1 of spacing pilot hole 3, by rectangular guiding groove 3-1, spacing and guiding is carried out to valve rocker push rod 5, the bulb 5-1 of valve rocker push rod 5 upper end matches with valve rocker, and the bulb 5-1 of valve rocker push rod 5 lower end matches with tappet 7.Reduce the bar portion of valve rocker push rod 5 and the gap, long limit of rectangular guiding groove 3-1, when motor operationally valve rocker push rod 5 run more steadily reliable in the rectangular guiding groove 3-1 of spacing pilot hole 3, not only reduce the amplitude of fluctuation of valve rocker 6, ensure that the normal operation of motor, but also reduce the frictional force with the nylon guide sleeve 4 of push rod limiting board body 1, improve the situation that push rod limiting board body 1 is worn, add operational safety.Described motor is internal-combustion engine.
The spacing pilot hole 3 of valve rocker push rod 5 is established in described nylon guide sleeve 4, outside is provided with a circle locating slot 4-2 along girth, nylon guide sleeve 4 embeds in the nylon guide sleeve mounting hole of push rod limiting board body 1 by locating slot 4-2, thus be fixed on push rod limiting board body 1, the frictional force with valve rocker push rod 5 is reduced by nylon guide sleeve 4, avoid valve rocker push rod 5 directly to contact with push rod limiting board body 1, prevent push rod limiting board body 1 to be worn.The top of described nylon guide sleeve 4 is provided with ladder reinforced layer 4-1, and this ladder reinforced layer 4-1 enhances the thickness of nylon guide sleeve 4, strengthens the intensity of nylon guide sleeve 4, thus extends the working life of nylon guide sleeve 4.Nylon guide sleeve 4 adopts existing nylon material molding and forming.
Claims (5)
1. an engine valve rocker arm push rod limiting board combination apparatus, comprise push rod limiting board body (1) and valve rocker push rod (5), described push rod limiting board body (1) is provided with mounting hole (2), the two ends of described valve rocker push rod (5) are provided with bulb (5-1), the diameter of bulb (5-1) is greater than valve rocker push rod (5) bar portion diameter, it is characterized in that: described push rod limiting board body (1) is symmetrically arranged with two nylon guide sleeve mounting holes, nylon guide sleeve (4) is fixedly installed respectively in each nylon guide sleeve mounting hole, each nylon guide sleeve (4) is provided with the spacing pilot hole (3) of push rod, described spacing pilot hole (3) is made up of rectangular guiding groove (3-1) and circular resigning hole (3-2), circular resigning hole (3-2) is communicated with the broadside of rectangular guiding groove (3-1) and forms spacing pilot hole (3), the width of described rectangular guiding groove (3-1) is less than bulb (5-1) diameter of valve rocker push rod (5), the diameter of circular resigning hole (3-2) is greater than the diameter of bulb (5-1), for the bulb of valve rocker push rod (5) is through stepping down, the width of rectangular guiding groove (3-1) enters for valve rocker-arm push-rod (5) bar portion, the bar portion of rectangular guiding flute length limit (3-1) inwall and valve rocker push rod (5) forms Spielpassung.
2. engine valve rocker arm push rod limiting board combination apparatus according to claim 1, it is characterized in that: the spacing pilot hole establishing push rod in described nylon guide sleeve (4), outside is provided with locating slot (4-2) along girth, and nylon guide sleeve (4) is fixed on push rod limiting board body (1) by locating slot (4-2).
3. engine valve rocker arm push rod limiting board combination apparatus according to claim 1 and 2, is characterized in that: described nylon guide sleeve (4) is provided with ladder reinforced layer (4-1).
4. engine valve rocker arm push rod limiting board combination apparatus according to claim 1, is characterized in that: major arc section and the rectangular guiding groove (3-1) of described circular resigning hole (3-2) form spacing pilot hole (3).
5. the engine valve rocker arm push rod limiting board combination apparatus according to claim 1 or 4, is characterized in that: the gap in the bar portion of described rectangular guiding groove (3-1) long limit inwall and valve rocker push rod (5) is 0.2mm ~ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250531.0A CN104929712A (en) | 2015-05-18 | 2015-05-18 | Combination device of valve rocker push rod limiting plate of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250531.0A CN104929712A (en) | 2015-05-18 | 2015-05-18 | Combination device of valve rocker push rod limiting plate of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104929712A true CN104929712A (en) | 2015-09-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510250531.0A Pending CN104929712A (en) | 2015-05-18 | 2015-05-18 | Combination device of valve rocker push rod limiting plate of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104929712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412568A (en) * | 2018-01-30 | 2018-08-17 | 重庆科马工贸有限公司 | A kind of tappet limiting plate combination |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3086507A (en) * | 1961-09-26 | 1963-04-23 | Ford Motor Co | Push rod |
| US3963280A (en) * | 1974-08-09 | 1976-06-15 | Jeffrey Robert Hughes | Pushrod guide and locator |
| US4856467A (en) * | 1988-05-20 | 1989-08-15 | Tecumseh Products Company | Adjustable lash valve train for overhead valve engine |
| CN2616688Y (en) * | 2003-04-17 | 2004-05-19 | 重庆隆鑫工业（集团）有限公司 | General petrol engine push-rod limiting board combination apparatus |
| CN2771486Y (en) * | 2004-12-04 | 2006-04-12 | 重庆宗申技术开发研究有限公司 | Valve acluating device for general petrol engine |
| CN204755009U (en) * | 2015-05-18 | 2015-11-11 | 隆鑫通用动力股份有限公司 | Valve rocker push rod limiting plate composite set |
-
2015
- 2015-05-18 CN CN201510250531.0A patent/CN104929712A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3086507A (en) * | 1961-09-26 | 1963-04-23 | Ford Motor Co | Push rod |
| US3963280A (en) * | 1974-08-09 | 1976-06-15 | Jeffrey Robert Hughes | Pushrod guide and locator |
| US4856467A (en) * | 1988-05-20 | 1989-08-15 | Tecumseh Products Company | Adjustable lash valve train for overhead valve engine |
| CN2616688Y (en) * | 2003-04-17 | 2004-05-19 | 重庆隆鑫工业（集团）有限公司 | General petrol engine push-rod limiting board combination apparatus |
| CN2771486Y (en) * | 2004-12-04 | 2006-04-12 | 重庆宗申技术开发研究有限公司 | Valve acluating device for general petrol engine |
| CN204755009U (en) * | 2015-05-18 | 2015-11-11 | 隆鑫通用动力股份有限公司 | Valve rocker push rod limiting plate composite set |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412568A (en) * | 2018-01-30 | 2018-08-17 | 重庆科马工贸有限公司 | A kind of tappet limiting plate combination |
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Application publication date: 20150923 |