CN204691841U - A kind of pitman arm shaft limit structure of distribution device - Google Patents
A kind of pitman arm shaft limit structure of distribution device Download PDFInfo
- Publication number
- CN204691841U CN204691841U CN201520381401.6U CN201520381401U CN204691841U CN 204691841 U CN204691841 U CN 204691841U CN 201520381401 U CN201520381401 U CN 201520381401U CN 204691841 U CN204691841 U CN 204691841U
- Authority
- CN
- China
- Prior art keywords
- arm shaft
- pitman arm
- cylinder head
- distribution device
- limit structure
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A pitman arm shaft limit structure for distribution device, comprises cylinder head and cylinder head cover, and cylinder head cover is by sidewall card with in cylinder head, and pitman arm shaft is fixed on cylinder head, and the position that the sidewall of cylinder head cover is corresponding with end face of rocker arm shaft is provided with projection.The utility model arranges the projection corresponding with end face of rocker arm shaft and carries out spacing to pitman arm shaft on cylinder head cover, simple and stable structure, is easy to processing, also omit assembly process simultaneously.
Description
Technical field
The utility model relates to a kind of limit structure, particularly relates to a kind of pitman arm shaft limit structure of distribution device.
Background technique
Engine valve actuating mechanism is the mechanism controlling cylinder air inlet, exhaust.Distribution device runs under cam effect, controls moving up and down of valve rocker, and then drive valve opening or closedown by the rotation of cam, and to ensure that fresh air enters cylinder, waste gas discharges cylinder.Valve rocker is fixed on cylinder head by pitman arm shaft, and in order to prevent pitman arm shaft axial float so that come off, the bolt that pitman arm shaft is arranged by two ends usually gives spacing.The patent No. be 200720124131.6 Chinese patent disclose a kind of pitman arm shaft of engine cylinder head, the limit structure of camshaft: pitman arm shaft and camshaft load in the pitman arm shaft mounting hole and camshaft support hole that cylinder head is arranged respectively from the side of cylinder head in the same way, between camshaft displacement two pitman arm shaft, at pitman arm shaft, after camshaft is seated, the loading direction of one of them pitman arm shaft is by an assembling bolt spacing backstop, the loading direction of another pitman arm shaft and camshaft is by the pressing plate be arranged on cylinder head in the lump spacing backstop, pressing plate has an arc extending end and the bump to downward-extension, arc extending end press against the loading direction of this pitman arm shaft, bump press against the bearing face of interference fit on camshaft.Although this limit structure can effectively prevent pitman arm shaft and camshaft from the slippage of respective position, complex structure, assembling is difficulty comparatively.
Model utility content
It is simple that the purpose of this utility model is to provide a kind of structure, and assembling is easy to the pitman arm shaft limit structure of distribution device.
The purpose of this utility model realizes like this, a pitman arm shaft limit structure for distribution device, comprise cylinder head and cylinder head cover, cylinder head cover is limited in cylinder head by sidewall; pitman arm shaft is fixed on cylinder head, and the position that the sidewall of cylinder head cover is corresponding with end face of rocker arm shaft is provided with projection.The projection that cylinder head cover is arranged is corresponding with pitman arm shaft, and when pitman arm shaft axial float, projection can play the effect limiting its play.
In order to structure is simple, above-mentioned projection is one, with the mate of pitman arm shaft.As long as arrange projection in one end of pitman arm shaft, spacing object can be reached.
In order to constitutional balance is stablized, above-mentioned projection is two and is arranged on the relative position of cylinder head cover sidewall, coordinates with the both ends of the surface of pitman arm shaft.
Above-mentioned pitman arm shaft is provided with two rocking arms.Two rocking arms share pitman arm shafts, make the simple and good stability of structure.
Two rocking arms are through on pitman arm shaft respectively by the rocker shaft hole on rocking arm.
Rocker shaft hole is arranged on the neutral position of rocking arm, and rocking arm front end is connected with valve with by valve stem, and rocking arm rear end is connected with hydraulic tappet by push rod, the cam contact on hydraulic tappet and camshaft.
Camshaft and bent axle are set in parallel on engine housing, and cylinder head is arranged on the side of bent axle.The two ends of rocking arm are connected with cam and valve respectively, realize the action of the pore opened or closed on cylinder head.
The utility model has following beneficial effect:
1, the utility model arranges the projection corresponding with end face of rocker arm shaft and carries out spacing to pitman arm shaft on cylinder head cover, and structure is simple, is easy to processing.
2, pitman arm shaft position-limit mechanism is arranged on cylinder head cover by the utility model, and structural stability is reliable, also omit the operation of assembling simultaneously.
Accompanying drawing explanation
Fig. 1 is the pitman arm shaft limit structure schematic diagram of the utility model distribution device;
Fig. 2 is the utility model cylinder head cover schematic diagram;
Fig. 3 is the utility model distribution device schematic diagram.
In figure, 1. cylinder head, 2. cylinder head cover, 3. pitman arm shaft, 4. protruding, 5. rocking arm, 6. valve, 7. camshaft, 8. push rod, 9. hydraulic tappet, 10. valve stem.
Embodiment
Embodiment 1, a kind of pitman arm shaft limit structure of distribution device, and comprise cylinder head 1 and cylinder head cover 2, cylinder head cover 2 is limited in cylinder head 1 by sidewall, and pitman arm shaft 3 is fixed on cylinder head 1, and the position that the sidewall of cylinder head cover 2 is corresponding with pitman arm shaft 3 end face is provided with protruding 4.When pitman arm shaft 3 axial float, protruding 4 can play the effect limiting its play.
In the present embodiment, protruding 4 is one, with the one end fits of pitman arm shaft 3.
Certainly, protruding 4 also can be set to two, are arranged on the position that cylinder head cover 2 sidewall is relative, coordinate carry out spacing to pitman arm shaft 3 with the both ends of the surface of pitman arm shaft 3.
Embodiment 2, a kind of pitman arm shaft limit structure of distribution device, and on the basis of embodiment 1, camshaft 7 and bent axle are set in parallel on engine housing, and cylinder head 1 is arranged on the side of bent axle.Pitman arm shaft 3 is provided with two Rocker arm 5s, and two Rocker arm 5s are through at pitman arm shaft 3 respectively by the rocker shaft hole on rocking arm.Rocker shaft hole is arranged on the neutral position of Rocker arm 5, and Rocker arm 5 front end is connected with valve 6, and Rocker arm 5 rear end is connected with hydraulic tappet 9 by push rod 8, and hydraulic tappet 9 is connected with the cam contact on camshaft 7.Cam rotates, and promote push rod 8 by hydraulic tappet 9 and move up and down, push rod 8 drives Rocker arm 5 one end with pitman arm shaft 3 for fulcrum moves up and down, and then drives valve 6 to open or close by Rocker arm 5 the other end control valve stem 10.
Claims (7)
1. the pitman arm shaft limit structure of a distribution device, it is characterized in that: comprise cylinder head (1) and cylinder head cover (2), described cylinder head cover (2) is limited in cylinder head (1) by sidewall; pitman arm shaft (3) is fixed on described cylinder head (1), and the position that the sidewall of cylinder head cover (2) is corresponding with pitman arm shaft (3) end face is provided with projection (4).
2. the pitman arm shaft limit structure of distribution device as claimed in claim 1, is characterized in that: described projection (4) is two and is arranged on the relative position of cylinder head cover (2) sidewall, coordinates with the both ends of the surface of pitman arm shaft (3).
3. the pitman arm shaft limit structure of distribution device as claimed in claim 1, is characterized in that: described projection (4) is one, with the mate of pitman arm shaft (3).
4. the pitman arm shaft limit structure of the distribution device as described in any one of claim 1-3, is characterized in that: described pitman arm shaft (3) is provided with two rocking arms (5).
5. the pitman arm shaft limit structure of distribution device as claimed in claim 4, is characterized in that: described two rocking arms (5) are through on pitman arm shaft (3) respectively by the rocker shaft hole on rocking arm (5).
6. the pitman arm shaft limit structure of distribution device as claimed in claim 5, it is characterized in that: described rocker shaft hole is arranged on the neutral position of rocking arm (5); rocking arm (5) front end is connected with valve (6) by valve stem (10); rocking arm (5) rear end is connected with hydraulic tappet (9) by push rod (8), and described hydraulic tappet (9) is connected with the cam contact on camshaft (7).
7. the pitman arm shaft limit structure of distribution device as claimed in claim 6, is characterized in that: described camshaft (7) and bent axle are set in parallel on engine housing, and described cylinder head (1) is arranged on the side of bent axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520381401.6U CN204691841U (en) | 2015-06-05 | 2015-06-05 | A kind of pitman arm shaft limit structure of distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520381401.6U CN204691841U (en) | 2015-06-05 | 2015-06-05 | A kind of pitman arm shaft limit structure of distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204691841U true CN204691841U (en) | 2015-10-07 |
Family
ID=54232144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520381401.6U Active CN204691841U (en) | 2015-06-05 | 2015-06-05 | A kind of pitman arm shaft limit structure of distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204691841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611173A (en) * | 2018-07-28 | 2019-04-12 | 重庆隆鑫发动机有限公司 | Engine valve actuating mechanism and engine |
| CN115324680A (en) * | 2022-09-20 | 2022-11-11 | 湖南敏行汽车科技有限公司 | Novel horizontal opposed engine valve mechanism |
-
2015
- 2015-06-05 CN CN201520381401.6U patent/CN204691841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611173A (en) * | 2018-07-28 | 2019-04-12 | 重庆隆鑫发动机有限公司 | Engine valve actuating mechanism and engine |
| CN115324680A (en) * | 2022-09-20 | 2022-11-11 | 湖南敏行汽车科技有限公司 | Novel horizontal opposed engine valve mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102155273A (en) | Variable gas distribution mechanism of engine | |
| CN204691841U (en) | A kind of pitman arm shaft limit structure of distribution device | |
| EP1843014A3 (en) | Lift-variable valve-operating system for internal combustion engine | |
| CN100552192C (en) | Variable valve gear | |
| CN101705851A (en) | Mechanical continuous variable valve lift driving device | |
| RU2013126078A (en) | VALVE ROCKER AND VALVE OPENING MECHANISM WITH SUCH ROCKER | |
| CN201358821Y (en) | Valve driving device of valve-spring-free air distribution mechanism in engine | |
| CN205089386U (en) | Valve timing mechanism of motorcycle engine | |
| CN100425805C (en) | Engine valve driving device | |
| CN202031669U (en) | Valve rocker shaft seat | |
| CN201391340Y (en) | Fully-changeable cam molded line mechanism | |
| CN205089387U (en) | Valve timing mechanism of motorcycle engine | |
| CN205078313U (en) | Mechanism that variable valve lift and secondary opened can realize | |
| CN2937488Y (en) | Valve rocker device | |
| CN202348362U (en) | Valve rocker for engine | |
| CN205089384U (en) | Motorcycle engine double cam valve timing mechanism | |
| CN205089395U (en) | Motorcycle engine double cam valve timing mechanism | |
| CN205089394U (en) | Motorcycle engine double cam valve timing mechanism | |
| CN205089396U (en) | Valve timing mechanism of motorcycle engine | |
| CN105221196A (en) | A kind of air distributing mechanism of engine for motorcycle | |
| CN202560338U (en) | Low-wear distribution mechanism of overhead valve (OHV) engine of motor bicycle | |
| CN205330753U (en) | Novel four jar engine exhaust camshafts | |
| KR101316447B1 (en) | Latching device for variable valve lift | |
| CN201246194Y (en) | Distribution transmission mechanism of diesel engine | |
| CN201705404U (en) | Driving device of valve of engine cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200826 Address after: 400054, 14, 126 South Main Road, Banan District, Chongqing Patentee after: CHONGQING ZONGSHEN AIRCRAFT ENGINE MANUFACTURING Co.,Ltd. Address before: 400054 Banan District, Chongqing City Industrial Park Patentee before: CHONGQING ZONGSHEN POWER MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Building 14, No. 126, Yunan Avenue, Banan District, Chongqing Patentee after: Chongqing Zongshen Aviation Engine Manufacturing Co.,Ltd. Address before: Building 14, No. 126, Yunan Avenue, Banan District, Chongqing Patentee before: CHONGQING ZONGSHEN AIRCRAFT ENGINE MANUFACTURING CO.,LTD. |