CN105221198A - A kind of motorcycle engine double-cam distribution device - Google Patents
A kind of motorcycle engine double-cam distribution device Download PDFInfo
- Publication number
- CN105221198A CN105221198A CN201510743757.4A CN201510743757A CN105221198A CN 105221198 A CN105221198 A CN 105221198A CN 201510743757 A CN201510743757 A CN 201510743757A CN 105221198 A CN105221198 A CN 105221198A
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- push rod
- exhaust
- cam
- camshaft
- distribution device
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A kind of motorcycle engine double-cam distribution device, comprise camshaft and be arranged on two cams on camshaft, the protrusion direction of two cams is contrary, the same side of two cams is provided with two push rods, push rod upper end is connected with valve by spring, and lower end is connected with cam contact by rocking arm, and push rod rotates and is arranged in push rod shaft; rocking arm rotates and is arranged on pitman arm shaft, and push rod shaft and pitman arm shaft are all arranged on casing; The two ends of camshaft are axle bearing mount portion, are provided with oil duct in camshaft, and the outer surface of axle bearing mount portion is provided with annular oil groove, is provided with oilhole between annular oil groove and oil duct.Structure of the present invention is simple, and good stability, and easy processing are easy to use, high lubricating effect, long service life.
Description
Technical field
The present invention relates to a kind of air distributing mechanism of engine for motorcycle, particularly relate to a kind of motorcycle engine double-cam distribution device.
Background technique
The patent No. be 201410401897.9 Chinese patent disclose a kind of motorcycle engine double-cam distribution device, wherein, intake valve is driven by an intake cam, exhaust valve is driven by an exhaust cam, between intake cam and intake valve, between exhaust cam and exhaust valve, one_to_one corresponding is provided with inlet ram and exhaust tappet, inlet ram and exhaust tappet are arranged at camshaft the same side, and between described intake cam and inlet ram, between exhaust cam and exhaust tappet, one_to_one corresponding is provided with air inlet lower shake-changing arm and is vented lower shake-changing arm; Between inlet ram and intake valve, between exhaust tappet and exhaust valve, one_to_one corresponding is provided with air inlet upper rocker arm and exhaust upper rocker arm.Such distribution device can ensure the timing property requirement of motorcycle engine air inlet and exhaust, realizes the timing distribution of expection, but, its complex structure, the high and poor stability of cost.
Summary of the invention
The object of the present invention is to provide a kind of structure simple motorcycle engine double-cam distribution device.
The object of the present invention is achieved like this, a kind of motorcycle engine double-cam distribution device, comprise camshaft, be arranged on two cams on camshaft and two push rods, the protrusion direction of two cams is contrary, and two push rods are arranged on the side of camshaft, and push rod upper end is connected with valve by spring, lower end is connected with cam contact by rocking arm, push rod rotates and is arranged in push rod shaft, and rocking arm rotates and is arranged on pitman arm shaft, and push rod shaft and pitman arm shaft are all arranged on casing; The two ends of camshaft are axle bearing mount portion, are provided with oil duct in camshaft, and the outer surface of axle bearing mount portion is provided with annular oil groove, is provided with oilhole between annular oil groove and oil duct.Cam axle, one of them cam promotes the rocking arm corresponding with it, this rocking arm drives corresponding push rod to be subjected to displacement, and then by the valve of spring drive correspondence moves, thus open the valve corresponding with it, camshaft is rotated further, another cam promotes the rocking arm corresponding with it, this rocking arm drives corresponding push rod to be subjected to displacement, and then to be driven on another valve by spring and move, thus open the valve corresponding with it, and another valve-closing, two cams like this alternately promote the push rod corresponding with it, thus alternately open, close two valves.Lubricant oil arrives in the annular oil groove of the outer surface of axle bearing mount portion by oilhole from oil duct, lubricant oil is along with the rotation annularly oil groove flowing of camshaft, add the waiting time of lubricant oil on camshaft surface, parts of lubricating oil can flow back to oil duct by oilhole simultaneously, not only high lubricating effect, and the loss decreasing lubricant oil.
Push rod comprises inlet push rod and exhaust push rod, spring comprises air inlet spring and exhaust spring; rocking arm comprises intake rocker and exhaust rocker arm; valve comprises intake valve and exhaust valve, and in two push rods, one is inlet push rod, and its lower end is connected with a cam contact by rocking arm; upper end is connected with intake valve by air inlet spring; another push rod is exhaust push rod, and its lower end is connected with another cam contact by exhaust rocker arm, and upper end is connected with exhaust valve by exhaust spring.
Intake rocker and exhaust rocker arm are equipped with rocking arm hole, and intake rocker and exhaust rocker arm are located on pitman arm shaft respectively by rocking arm hole.
In order to reduce wear, be provided with packing ring between rocking arm hole and pitman arm shaft, between attachment hole and push rod shaft, being provided with packing ring.
Inlet push rod and exhaust push rod are equipped with attachment hole, and inlet push rod and exhaust push rod are located in push rod shaft respectively by attachment hole.
In order to improve the lubrication effect to cam, the camshaft outer surface at cam place is provided with annular oil groove, is provided with oilhole between described annular oil groove and oil duct.
The present invention has following beneficial effect:
1, the push rod upper end of motorcycle engine double-cam distribution device of the present invention is connected with valve by spring, lower end is connected with cam contact by rocking arm, cam is by rocker arm displaces push rod, and then be subjected to displacement by spring band door of taking offence, realize the opening of valve, close, structure is simple, good stability.
2, the lubricant oil in camshaft of the present invention arrives in the annular oil groove of the outer surface of axle bearing mount portion by oilhole from oil duct, lubricant oil is along with the rotation annularly chute flowing of camshaft, axle bearing mount portion is lubricated, parts of lubricating oil can flow back to oil duct by oilhole simultaneously, annular oil groove adds the waiting time on lubricant oil camshaft surface, not only high lubricating effect, and the loss decreasing lubricant oil.
3, easy processing of the present invention, easy to use, and long service life.
Accompanying drawing explanation
Fig. 1 is motorcycle engine double-cam distribution device schematic diagram of the present invention.
Fig. 2 is the camshaft structure schematic diagram in the present invention.
Fig. 3 is the sectional view of Fig. 2.
In figure, 1. camshaft, 2. cam, 3. push rod, 4. rocking arm, 5. pitman arm shaft, 6. valve, 7. spring, 8. push rod shaft, 9. annular oil groove, 10. oil duct, 11. oilholes.
Embodiment
Embodiment, a kind of motorcycle engine double-cam distribution device, see Fig. 1, comprise camshaft 1 contrary with the protrusion direction being arranged on two cams, 2, two cams 2 on camshaft 1, the side of camshaft 1 is provided with two push rods 3, each push rod 3 upper end is connected with a valve 6 by a spring 7, and lower end is contacted with cam 2 place by a Rocker arm 5 and connects, and push rod 3 is arranged in push rod shaft 8; Rocker arm 4 is arranged on pitman arm shaft 5, and push rod shaft 8 and pitman arm shaft 5 are all arranged on casing.See Fig. 2, Fig. 3, the two ends of camshaft 1 are axle bearing mount portion, are provided with oil duct 10 in camshaft 1, and the outer surface of axle bearing mount portion is provided with annular oil groove 9, is provided with oilhole 11 between annular oil groove 9 and oil duct 10.
Camshaft 1 outer surface at cam 2 place is provided with annular oil groove 9, is provided with oilhole 11 between annular oil groove 9 and oil duct 10, and the opening of oilhole 11 is positioned at annular oil groove 9.
Rocker arm 5 rotates and is arranged on a pitman arm shaft 5, and push rod 5 rotates and is arranged in a push rod shaft 8.
Push rod 3 comprises inlet push rod and exhaust push rod, spring 7 comprises air inlet spring and exhaust spring; Rocker arm 5 comprises intake rocker and exhaust rocker arm; valve 6 comprises intake valve and exhaust valve, and in two push rods 3, one is inlet push rod, and its lower end to be contacted with cam 2 place by intake rocker and connects; upper end is connected with intake valve by air inlet spring; another push rod 3 is exhaust push rod, and its lower end to be contacted with another cam 2 place by exhaust rocker arm and connects, and upper end is connected with exhaust valve by exhaust spring.
Intake rocker and exhaust rocker arm are equipped with rocking arm hole, and intake rocker and exhaust rocker arm are located on pitman arm shaft 5 respectively by rocking arm hole.
Packing ring is provided with between rocking arm hole and pitman arm shaft 5.
Inlet push rod and exhaust push rod are equipped with attachment hole, and inlet push rod and exhaust push rod are located in push rod shaft 8 respectively by attachment hole.
Packing ring is provided with between attachment hole and push rod shaft 8.
During engine operation, camshaft 1 rotates, a cam 2 promotes and intake rocker, intake rocker promotes inlet push rod and is subjected to displacement, and then by air inlet spring drive intake valve moves, thus open intake valve, camshaft is rotated further, cam leaves inlet push rod, intake rocker travelling backwards, inlet push rod moves down thereupon, and then drive intake valve to move down by air inlet spring, close intake valve, meanwhile, another cam promotes exhaust rocker arm, exhaust rocker arm promotes exhaust push rod, exhaust push rod is driven on exhaust valve by exhaust spring and moves, open exhaust valve, two cams like this promote intake rocker and exhaust rocker arm alternately through push rod, thus alternately open, close intake valve and exhaust valve.Lubricant oil in camshaft 1 arrives in the annular oil groove 9 of the outer surface of axle bearing mount portion and cam 2 by oilhole 11 from oil duct 10, lubricant oil along with camshaft 1 rotation annularly oil groove 9 flow, lubricate axle bearing mount portion and cam 2, parts of lubricating oil flows back to oil duct 10 by oilhole 11 simultaneously.
Structure of the present invention is simple, good stability, and easy processing is easy to use, high lubricating effect, long service life.
Claims (7)
1. a motorcycle engine double-cam distribution device, comprise camshaft (1), be arranged on two cams (2) on camshaft (1) and two push rods (3), the protrusion direction of described two cams (2) is contrary, two push rods (3) are arranged on the side of camshaft (1), it is characterized in that: described push rod (3) upper end is connected with valve (6) by spring (7), lower end is contacted with cam (2) place by rocking arm (5) and connects, described push rod (3) rotates and is arranged in push rod shaft (8), described rocking arm (4) rotates and is arranged on pitman arm shaft (5), described push rod shaft (8) and pitman arm shaft (5) are all arranged on casing, the two ends of described camshaft (1) are axle bearing mount portion, are provided with oil duct (10) in described camshaft (1), and the outer surface of described axle bearing mount portion is provided with annular oil groove (9), is provided with oilhole (11) between described annular oil groove (9) and oil duct (10).
2. motorcycle engine double-cam distribution device as claimed in claim 1, it is characterized in that: described push rod (3) comprises inlet push rod and exhaust push rod, described spring (7) comprises air inlet spring and exhaust spring, described rocking arm (5) comprises intake rocker and exhaust rocker arm, described valve (6) comprises intake valve and exhaust valve, in described two push rods (3), one is inlet push rod, its lower end to be contacted with a cam (2) by intake rocker and connects, upper end is connected with intake valve by air inlet spring, another push rod (3) is exhaust push rod, its lower end is connected with another cam contact by exhaust rocker arm, upper end is connected with exhaust valve by exhaust spring.
3. motorcycle engine double-cam distribution device as claimed in claim 2, it is characterized in that: described intake rocker and exhaust rocker arm are equipped with rocking arm hole, described intake rocker and exhaust rocker arm are located on pitman arm shaft (5) respectively by rocking arm hole.
4. motorcycle engine double-cam distribution device as claimed in claim 3, is characterized in that: be provided with packing ring between described rocking arm hole and pitman arm shaft (5).
5. the motorcycle engine double-cam distribution device as described in any one of claim 2-4, it is characterized in that: described inlet push rod and exhaust push rod are equipped with attachment hole, described inlet push rod and exhaust push rod are located in push rod shaft (8) respectively by attachment hole.
6. motorcycle engine double-cam distribution device as claimed in claim 5, is characterized in that: be provided with packing ring between described attachment hole and push rod shaft (8).
7. the motorcycle engine double-cam distribution device as described in any one of claim 1-4, it is characterized in that: camshaft (1) outer surface at described cam (2) place is provided with annular oil groove (9), is provided with oilhole (11) between described annular oil groove (9) and oil duct (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743757.4A CN105221198A (en) | 2015-11-05 | 2015-11-05 | A kind of motorcycle engine double-cam distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743757.4A CN105221198A (en) | 2015-11-05 | 2015-11-05 | A kind of motorcycle engine double-cam distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221198A true CN105221198A (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510743757.4A Pending CN105221198A (en) | 2015-11-05 | 2015-11-05 | A kind of motorcycle engine double-cam distribution device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4974561A (en) * | 1988-11-16 | 1990-12-04 | Nissan Motor Co., Ltd. | Lubrication device for engine |
| CN104295331A (en) * | 2014-08-14 | 2015-01-21 | 重庆隆鑫发动机有限公司 | Valve mechanism of motorcycle engine and motorcycle engine |
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
| CN205101057U (en) * | 2015-11-05 | 2016-03-23 | 重庆驰龙摩托车配件有限公司 | Motorcycle engine double cam valve timing mechanism |
-
2015
- 2015-11-05 CN CN201510743757.4A patent/CN105221198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4974561A (en) * | 1988-11-16 | 1990-12-04 | Nissan Motor Co., Ltd. | Lubrication device for engine |
| CN104295331A (en) * | 2014-08-14 | 2015-01-21 | 重庆隆鑫发动机有限公司 | Valve mechanism of motorcycle engine and motorcycle engine |
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
| CN205101057U (en) * | 2015-11-05 | 2016-03-23 | 重庆驰龙摩托车配件有限公司 | Motorcycle engine double cam valve timing mechanism |
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Application publication date: 20160106 |
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| RJ01 | Rejection of invention patent application after publication |