CN202746026U - Engine cylinder head structure - Google Patents
Engine cylinder head structure Download PDFInfo
- Publication number
- CN202746026U CN202746026U CN2012204595046U CN201220459504U CN202746026U CN 202746026 U CN202746026 U CN 202746026U CN 2012204595046 U CN2012204595046 U CN 2012204595046U CN 201220459504 U CN201220459504 U CN 201220459504U CN 202746026 U CN202746026 U CN 202746026U
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- bearing seat
- arm shaft
- pitman arm
- positioning bearing
- 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.)
- Expired - Fee Related
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model relates to an engine cylinder head structure. The engine cylinder head structure comprises a cylinder head body, a cam shaft seat fixed on the cylinder head body, a cam shaft assembly borne on the cam shaft seat and a rocker arm mechanism. The cam shaft seat comprises two locating bearing seats, and one of the locating bearing seats comprises an internal buried channel, a seat hole, a bolt channel, a rocker arm shaft supporting hole and a seat heat tank communicated with the internal buried channel and the bolt channel. A cover plate is covered above the seat head tank and composed of a fixed section and a cam shaft assembly blocking section, wherein a lock bolt passes through the fixed section, and the cam shaft assembly blocking section bends and extends from the fixed section to exceed the edge of the seat hole and cover a part of a bearing. Due to the adoption of the structure, the cover plate simultaneously has the effects of covering the seat head tank and limiting the axial displacement of the cam shaft assembly, and therefore, lock accessories are saved and the assembling steps are reduced.
Description
Technical field
The utility model relates to a kind of cylinder head structure of engine, especially a kind of cylinder head structure of engine that is applicable to the vehicle carrier.
Background technique
With reference to figure 1, Fig. 1 is the cylinder head stereogram of prior art.Show a cylinder head body 90, a camshaft holder 91, two groups of rocker arm bodies 92,93, one camshaft assembly 94 among the figure.Camshaft holder 91 is fixed on cylinder head body 90, comprises one first positioning bearing seat 911 and one second positioning bearing seat 912, and the two arranges in opposite directions.Each positioning bearing seat respectively is provided with a bolt passage 913 at opposite end, adds up to four bolt passage 913 general alignment squarely or rectangles.
Camshaft assembly 94 is placed through camshaft holder 91, namely is carried on respectively in the seat hole of the first positioning bearing seat 911 and the second positioning bearing seat 912 with its two ends.Each group rocker arm body 92,93 all is to be set up on the camshaft holder 91, cooperates start with the cam part (not shown) of camshaft assembly 94.
Be arranged with a refining wheel (not shown) on the camshaft assembly 94, in configuration, the second positioning bearing seat 912 is between the first positioning bearing seat 911 and refining wheel.
In this engine cylinder head of prior art, the first positioning bearing seat 911 is formed with and buries the oil duct (not shown) in one, is communicated in grease chamber's (not shown) of positioning bearing seat.In addition, the rim surface of the first positioning bearing seat 911 is formed with a groove 914, groove 914 is linked to each other with bolt passage 913 so that lubricant oil can along bolt passage 913, groove 914, in bury oil duct and enter the grease chamber.Groove 914 covers by the rim surface that a cover plate 95 is placed on the first positioning bearing seat 911, and the bolt 961 that passes bolt passage 913 also passes cover plate 95 simultaneously.This design mainly is to take full advantage of the bolt/nut that originally will use to make up to make cover plate 95 as the top cover of groove 914, and need not use extra spiral lock.Republic of China's patent publication No. 200949063 has just disclosed this oil duct design.
On the other hand, with a screw 962 that a positioning plate 97 is fixing in the side of the second bearing support 912,97 pairs of camshaft assemblies 94 of this positioning plate have the effect of axially locating and rocker arm body 92,93 pitman arm shaft 921,931 are had the effect that suppresses axial displacement and rotation.
Yet significantly, above-mentioned cover plate 95 is two individual part with positioning plate 97, and separately procedure and assembling operation demand are arranged, and therefore overall manufacturing efficient and cost is had adverse effect.In addition, because positioning plate 97 can cover by the refining wheel at last with pitman arm shaft 921,931, just can relate to the demounting procedure of the many parts that comprise the refining wheel when wish is keeped in repair some part such as rocking arm, expend many activity durations.
The model utility content
Main purpose of the present utility model provides a kind of cylinder head structure of engine, allows to simplify manufacturing and assembly program, saves the part user cost simultaneously.
For reaching above-mentioned purpose, cylinder head structure of engine of the present utility model comprises that a cylinder head body, a camshaft holder, a camshaft assembly, lock bolt and a rocker arm body.Above-mentioned camshaft holder is fixedly arranged on the cylinder head body, includes one first positioning bearing seat and one second positioning bearing seat that arrange in opposite directions.
The first positioning bearing seat is provided with and buries passage, hole, a bolt passage and a pitman arm shaft supported hole in one, bury channel connection wherein in the grease chamber of the first positioning bearing seat, the rim surface of the first positioning bearing seat is concaved with an inverted draw cut, bury passage in seat inverted draw cut connection bolt passage reaches, and seat inverted draw cut top is coated with a cover plate.Therefore, above-mentioned continuous bolt passage, seat inverted draw cut bury the some that passage consists of the engine lubricating oil circuit in reaching.Aforementioned cover plate comprises a holding part and a camshaft assembly section of stopping.
Above-mentioned camshaft assembly is to be carried on a hole through a bearing, is arranged with a refining wheel on the camshaft assembly.Lock the holding part of bolt-through cylinder head body, bolt passage and cover plate, rocker arm body comprises a pitman arm shaft, and this rocker bearing is stated from the pitman arm shaft supported hole.
The crooked extension of the camshaft assembly section of the stopping self-retaining section of cover plate surmounts the peritreme in the first positioning bearing seat seat hole, and covers the part of aforementioned bearings, in order to limit the assembly axial displacement of camshaft.
The rim surface of the rim surface of above-mentioned the first positioning bearing seat and the second positioning bearing seat all can be higher than the pitman arm shaft supported hole.
Above-mentioned cover plate can also comprise a pitman arm shaft section of stopping, when pitman arm shaft passes the pitman arm shaft supported hole and is formed with an axial prevent surface and a rotation during prevent surface; the pitman arm shaft section of stopping in contrast to crooked extension the in the camshaft assembly section of stopping ground and corresponding to axial prevent surface with rotate prevent surface, to limit pitman arm shaft axial displacement and amounts of rotation.The axial prevent surface of pitman arm shaft is not coplanar with the rotation prevent surface.Can be designed to the second positioning bearing seat on the configured in one piece between refining wheel and the first positioning bearing seat, so can keep in repair by rocker arm body for convenience detach, must not consider the refining wheel.
The another kind of form of cylinder head structure of engine of the present utility model is: comprise that a cylinder head body, a camshaft holder, a camshaft assembly, lock bolt and a rocker arm body.Camshaft holder is fixedly arranged on the cylinder head body, includes one first positioning bearing seat and one second positioning bearing seat that arrange in opposite directions.The first positioning bearing seat is provided with and buries passage, hole, a pitman arm shaft supported hole and a bolt passage in one, burying passage wherein is communicated with the grease chamber of the first positioning bearing seat, the rim surface of the first positioning bearing seat is concaved with an inverted draw cut, bury passage in seat inverted draw cut connection bolt passage reaches, and seat inverted draw cut top is coated with a cover plate.
Camshaft assembly sees through a bearing and is carried on a hole, is arranged with a refining wheel on it, locks bolt-through cylinder head body and bolt passage.Rocker arm body comprises a pitman arm shaft, and this rocker bearing is stated from the pitman arm shaft supported hole, and pitman arm shaft passes the pitman arm shaft supported hole and is formed with an axial prevent surface and a rotation prevent surface.
Cover plate comprises a holding part and a pitman arm shaft section of stopping, holding part is locked bolt-through, and the crooked corresponding shaft of extending of the pitman arm shaft section of stopping self-retaining section is to prevent surface and rotation prevent surface, in order to axial displacement and the amounts of rotation that limits pitman arm shaft.
From the above, cover plate of the present utility model is used for covering the current seat inverted draw cut of lubricant oil on the one hand, performance limits the momental function of camshaft assembly and/or pitman arm shaft on the one hand, and because be by the bolt that locks that is used for cylinder cover plate to be fixed, reduce extra cover plate fixing step one.
Description of drawings
Fig. 1 is the cylinder head stereogram of prior art.
Fig. 2 is the engine cylinder head exploded view of the first preferred embodiment of the present utility model.
Fig. 3 is the engine cylinder head ssembly drawing of the first preferred embodiment of the present utility model.
Fig. 4 is that Fig. 3 is by the part three-dimensional cutaway view of observing with respect to the opposite side of refining wheel.
Fig. 5 is the section plan along the V-V line of Fig. 3.
Fig. 6 is the engine cylinder head exploded view of the second preferred embodiment of the present utility model.
Fig. 7 is the engine cylinder head exploded view of the 3rd preferred embodiment of the present utility model.
The primary clustering symbol description
The first positioning bearing seat 911 second positioning bearing seats 912
Camshaft assembly 94 cover plates 95
Bolt 961 screws 962
Bury passage 121 in the first positioning bearing seat 12
Pitman arm shaft supported hole 124 grease chambeies 125
Seat inverted draw cut 126 second positioning bearing seats 13
Camshaft assembly 14,31 cam axis bodies 141
Cam set 142 bearings 143
Refining wheel 144 locks bolt 15
Axially prevent surface 161a rotates prevent surface 161b
Holding part 201,301, the 351 camshaft assembly sections of stopping 202,302
The pitman arm shaft section of stopping 203,352 nuts 21
Embodiment
With reference to figure 2 ~ 5, Fig. 2～5 are respectively engine cylinder head exploded view, ssembly drawing, part three-dimensional cutaway view, the section plans of the first preferred embodiment.Be the cylinder head relevant portion of a locomotive shown in the figure, include a cylinder head body 10, a camshaft holder 11, a camshaft assembly 14, two groups of rocker arm bodies 16 and a cover plate 20.Camshaft holder 11 is fixed on the cylinder head body 10, mainly is made of one first positioning bearing seat 12 and one second positioning bearing seat 13.Two positioning bearing seats 12,13 are face-to-face setting, and at least a portion structure is identical, the explanation as an example of the first positioning bearing seat 12 example comprises carrying the two pitman arm shaft supported holes 124 that a hole 122 that camshaft assembly 14 and parallel camshaft assembly 14 offer, two bolt passages 123 that vertical camshaft assembly 14 is offered and parallel camshaft assembly 14 are offered.
Above-mentioned four bolt passages 123 are arranged in rectangle or square, are locked bolt 15 by four and pass, and four lock bolt 15 locks with 21 cooperations of four nuts.Two groups of rocker arm bodies 16 are responsible for respectively air inlet and exhaust, structurally roughly the same; that rocker arm body 16 includes a pitman arm shaft 161 and the rocking arm 162 that is enclosed within on the pitman arm shaft 161, and pitman arm shaft 161 is to be carried in the pitman arm shaft supported hole 124 of two positioning bearing seats 12,13 with two ends.In the present embodiment, it is to pass the first positioning bearing seat 12 that each pitman arm shaft 161 has an end, and forms an axial prevent surface 161a and a rotation prevent surface 161b, and axially prevent surface 161a is vertically not coplanar with rotation prevent surface 161b.Certainly, axially the angle between prevent surface 161a and the rotation prevent surface 161b also can be designed to other angle.
Camshaft assembly 14 mainly comprises a cam axis body 141 and is fixedly arranged on a cam set 142 on cam axis body 141 outer ring surfaces.Cam set 142 can be to comprise two cams (being responsible for respectively air inlet and exhaust) person such as the present embodiment, can not be two cams in other design perhaps.Cam set 142 is in order to drive the start of rocker arm body 16.Cam axis body 141 two ends of camshaft assembly 14 each the cover one bearing 143 is arranged, by this structure, be carried on free to rotately two 2 positioning bearing seats 12,13 the seat hole in the middle of.
In addition, the first positioning bearing seat 12 has also had and has buried passage 121, a grease chamber 125 and an inverted draw cut 126 in one, wherein a seat inverted draw cut 126 is to be arranged with the rim surface that is formed at the first positioning bearing seat 12, and grease chamber 125 is in abutting connection with seat holes 122, in bury 121 in passage and be formed at the first positioning bearing seat 12 inside.In bury respectively connecting base inverted draw cut 126 and be used for the grease chamber 125 of lubricated aforementioned bearings 143 of passage 121 two ends.Seat inverted draw cut 126 1 ends link to each other with bolt passage 123.
The cover plate 20 of the present embodiment comprises long and narrow holding part 201, a camshaft assembly section of stopping 202 and the two pitman arm shaft sections of stopping 203, wherein, holding part 201 is the sections that cover an inverted draw cut 126, and cover plate 20 is locked bolt 15 to pass its holding part 201 and be fixed on camshaft holder 11.A part that surmounts the peritreme in a hole 122 and cover bearing 143 is extended in 201 bendings of the camshaft assembly section of stopping 202 self-retaining sections, thereby has brought into play the function of restriction camshaft assembly 14 axial displacements; The two pitman arm shaft sections of stopping 203 lay respectively at holding part 201 vertically upper two ends, and all to extend in contrast to the direction of the camshaft assembly section of stopping 202 is crooked, and corresponding to the axial prevent surface 161a of two pitman arm shafts 161 and rotation prevent surface 161b, thereby brought into play the function of restriction pitman arm shaft 161 axial displacements and amounts of rotation.
In the present embodiment, also be provided with a refining wheel 144 on the cam axis body 141 of camshaft assembly 14, its configuration is to be positioned at outside the camshaft holder 11, and near the second positioning bearing seat 13.
From the above, the seat inverted draw cut that the utility model utilizes single cover plate to have simultaneously to cover the camshaft holder rim surface is to form oil circuit and to the effect of camshaft assembly and/or pitman arm shaft constrained motion amount, and need not use extra spiral lock with securing cover plate, because be directly to utilize cylinder to lock the bolt nut group to be fixed, therefore generally speaking save the materials cost and reduce number of assembling steps.
In first case, although each pitman arm shaft has an end to pass the first positioning bearing seat, in other design, also can be not pass the first positioning bearing seat, can be with reference to the engine cylinder head exploded view of figure 6 second preferred embodiments.The cover plate 30 of this kind cylinder head structure of engine just can omit the pitman arm shaft section of stopping, and only is made of a holding part 301 and a camshaft assembly section of stopping 302, namely only to camshaft assembly 31 restrictive axial displacement amounts.
Engine cylinder head exploded view with reference to figure 7, the three preferred embodiments.The present embodiment is compared with first case, and difference is that cover plate 35 has omitted the camshaft assembly section of stopping, and is made of a holding part 351 and a pitman arm shaft section of stopping 352, namely only pitman arm shaft 36 is carried out axial displacement and amounts of rotation restriction.
Above-described embodiment is only given an example for convenience of description, and the protection domain that the utility model is advocated should be as the criterion with the described scope of claims, and is not limited to above-described embodiment.
Claims (9)
1. cylinder head structure of engine, it comprises:
One cylinder head body;
One camshaft holder, be fixedly arranged on this cylinder head body, include one first positioning bearing seat and one second positioning bearing seat that arrange in opposite directions, this first positioning bearing seat is provided with and buries passage, hole, a bolt passage and a pitman arm shaft supported hole in one, bury channel connection in a grease chamber of this first positioning bearing seat in wherein being somebody's turn to do, the rim surface of this first positioning bearing seat is concaved with an inverted draw cut, this inverted draw cut be communicated with this bolt passage and should in bury passage, and this inverted draw cut top is coated with a cover plate;
One camshaft assembly is carried on this hole through a bearing, and this camshaft assembly is provided with a refining wheel;
One locks bolt, runs through this cylinder head body and this bolt passage; And
One rocker arm body comprises a pitman arm shaft, and this rocker bearing is stated from the pitman arm shaft supported hole;
It is characterized in that:
This cover plate comprises a holding part and a camshaft assembly section of stopping, this holding part is locked bolt-through by this, and this camshaft assembly section of stopping surmounts the peritreme in this hole from crooked extension of this holding part, and covers the part of this bearing, in order to limit this camshaft assembly axial displacement.
2. cylinder head structure of engine as claimed in claim 1 is characterized in that, the rim surface of the rim surface of this first positioning bearing seat and this second positioning bearing seat all is higher than this pitman arm shaft supported hole.
3. cylinder head structure of engine as claimed in claim 1 is characterized in that, this second positioning bearing seat is disposed between this refining wheel and this first positioning bearing seat.
4. cylinder head structure of engine as claimed in claim 1, it is characterized in that, this cover plate also comprises a pitman arm shaft section of stopping, this pitman arm shaft passes this pitman arm shaft supported hole and is formed with an axial prevent surface and a rotation prevent surface, and this pitman arm shaft section of stopping is in contrast to the crooked extension of the direction of this camshaft assembly section of stopping and corresponding to this axial prevent surface and this rotation prevent surface.
5. cylinder head structure of engine as claimed in claim 4 is characterized in that, this axial prevent surface and this rotation prevent surface are not coplanar.
6. cylinder head structure of engine comprises:
One cylinder head body;
One camshaft holder, be fixedly arranged on this cylinder head body, include one first positioning bearing seat and one second positioning bearing seat that subtend arranges, this first positioning bearing seat is provided with and buries passage, hole, a pitman arm shaft supported hole and a bolt passage in one, bury channel connection in a grease chamber of this first positioning bearing seat in wherein being somebody's turn to do, the rim surface of this first positioning bearing seat is concaved with an inverted draw cut, this inverted draw cut be communicated with this bolt passage and should in bury passage, and this inverted draw cut top is coated with a cover plate;
One camshaft assembly, this camshaft assembly sees through a bearing and is carried on this hole, and this camshaft assembly is provided with a refining wheel;
One locks bolt, runs through this cylinder head body and this bolt passage; And
One rocker arm body comprises that one is carried on the pitman arm shaft of this pitman arm shaft supported hole, and this pitman arm shaft passes this pitman arm shaft supported hole and is formed with an axial prevent surface and a rotation prevent surface;
It is characterized in that:
This cover plate comprises a holding part and a pitman arm shaft section of stopping, this holding part is locked bolt-through by this, and this pitman arm shaft section of stopping is rotated prevent surface from crooked extension of this holding part to axial prevent surface and this, in order to axial displacement and the amounts of rotation that limits this pitman arm shaft.
7. cylinder head structure of engine as claimed in claim 6 is characterized in that, the rim surface of this first positioning bearing seat and this second positioning bearing seat all is higher than this pitman arm shaft supported hole.
8. cylinder head structure of engine as claimed in claim 6 is characterized in that, this second positioning bearing seat is disposed between this refining wheel and this first positioning bearing seat.
9. cylinder head structure of engine as claimed in claim 6 is characterized in that, this axial prevent surface and this rotation prevent surface are not coplanar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204595046U CN202746026U (en) | 2012-09-10 | 2012-09-10 | Engine cylinder head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204595046U CN202746026U (en) | 2012-09-10 | 2012-09-10 | Engine cylinder head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746026U true CN202746026U (en) | 2013-02-20 |
Family
ID=47705432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204595046U Expired - Fee Related CN202746026U (en) | 2012-09-10 | 2012-09-10 | Engine cylinder head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401682A (en) * | 2015-07-31 | 2017-02-15 | 光阳工业股份有限公司 | Rocker arm auxiliary unit applied to engine cylinder head |
-
2012
- 2012-09-10 CN CN2012204595046U patent/CN202746026U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401682A (en) * | 2015-07-31 | 2017-02-15 | 光阳工业股份有限公司 | Rocker arm auxiliary unit applied to engine cylinder head |
| CN106401682B (en) * | 2015-07-31 | 2019-11-08 | 光阳工业股份有限公司 | Rocker arm auxiliary unit for engine cylinder head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20210910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |