CN208380653U - The timing system of engine for motorcycle - Google Patents
The timing system of engine for motorcycle Download PDFInfo
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- CN208380653U CN208380653U CN201820910299.8U CN201820910299U CN208380653U CN 208380653 U CN208380653 U CN 208380653U CN 201820910299 U CN201820910299 U CN 201820910299U CN 208380653 U CN208380653 U CN 208380653U
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- timing
- sprocket
- timing chain
- cam shaft
- crankshaft
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Abstract
The utility model discloses a kind of timing systems of engine for motorcycle, including crankshaft timing sprocket, the first cam shaft timing chain wheel and the second cam shaft timing chain wheel, it is cooperatively connected between crankshaft timing sprocket, the first cam shaft timing chain wheel and the second cam shaft timing chain wheel through timing chain component；Axis hole is offered on the crankshaft timing sprocket, concavo-convex continuous tooth form spline group is equipped in axis hole, and the tooth form spline group is provided with the main spline for the indent that hypodontia is formed at one；Timing chain guided way is equipped on the outside of timing chain component between the crankshaft timing sprocket and the first cam shaft timing chain wheel, it is equipped with tensioning rail assembly on the outside of timing chain component between crankshaft timing sprocket and the second cam shaft timing chain wheel, is equipped with top cover chain gib block on the outside of the timing chain component between the first cam shaft timing chain wheel and the second cam shaft timing chain wheel.The utility model has the advantages that adapt to that the higher revolving speed of motorcycle engine, structural strength are high, stability is good.
Description
Technical field
The utility model relates to a kind of timing system of engine, the timing system of especially a kind of engine for motorcycle
System.
Background technique
For the revolving speed of existing engine for motorcycle generally in 6000r/min or so, revolving speed is lower, 998 series of Chongqing well-to-do level
Motorcycle engine revolving speed up to 11000r/min, the timing chain of the timing system of existing engine for motorcycle and
Just to adapting to the revolving speed of engine 6000r/min or so, unbearable 998 series of Chongqing well-to-do level is rubbed for the design of sprocket wheel
The so high revolving speed of motorcycle engine, if continuing to use the timing system of existing engine for motorcycle, specific manifestation is just
When chain carrier bar be easily broken off, fatigue behaviour is also poor, and vibration is big when crankshaft timing sprocket works, and is easy to issue very big
Noise, and it is unstable with the connection of crankshaft, and concentricity is not high, discontinuity, eventually leads to timing system and integrally uses the longevity
Order short, maintenance cost is big.Therefore, it needs one kind and adapts to the more high-revolving timing system of motorcycle engine.
Utility model content
The purpose of the utility model is to provide a kind of timing systems of engine for motorcycle.It, which has, adapts to rub
The advantage that the higher revolving speed of motorcycle engine, structural strength are high, stability is good.
The technical solution of the utility model includes: the timing system of engine for motorcycle, including it is crankshaft timing sprocket, first convex
Wheel shaft timing sprocket and the second cam shaft timing chain wheel, crankshaft timing sprocket, the first cam shaft timing chain wheel and the second camshaft
It is cooperatively connected between timing sprocket through timing chain component；Axis hole is offered on the crankshaft timing sprocket, is equipped in axis hole recessed
The continuous tooth form spline group of convex, the tooth form spline group are provided with the main spline for the indent that hypodontia is formed at one；The song
It is equipped with timing chain guided way on the outside of timing chain component between axis timing sprocket and the first cam shaft timing chain wheel, crankshaft is just
When sprocket wheel and the second cam shaft timing chain wheel between timing chain component on the outside of be equipped with tensioning rail assembly, the first camshaft timing
Top cover chain gib block is equipped on the outside of timing chain component between sprocket wheel and the second cam shaft timing chain wheel.
In the timing system of engine for motorcycle above-mentioned, the timing chain component includes guide plate and the position of two sides
One group of carrier bar being overlapping between two flipper guides；The carrier bar is bidentate structure, and the two sides of carrier bar, which are equipped with to extend, to be reinforced
Portion.
In the timing system of engine for motorcycle above-mentioned, the carrier bar is bidentate teeth structure, the tooth of the sprocket
Shape angle size is 68 ° 21 ' -68 ° 51 '.
In the timing system of engine for motorcycle above-mentioned, the extension reinforcement part is located on carrier bar in two connecting holes
The extended line position of heart line.
In the timing system of engine for motorcycle above-mentioned, the tensioning rail assembly is equipped with hydraulic tensioner；It is described
Tensioning rail assembly is arc-shaped setting, and the corresponding radius of circular arc is 270.0mm-350.0mm.
In the timing system of engine for motorcycle above-mentioned, first cam shaft timing chain wheel and the second camshaft are just
When sprocket sizes it is identical.
In the timing system of engine for motorcycle above-mentioned, the crankshaft timing sprocket is equipped with timing marks hole.
In the timing system of engine for motorcycle above-mentioned, the timing chain guided way is equipped with noise reduction ring.
In the timing system of engine for motorcycle above-mentioned, using the crankshaft timing sprocket center as vertex, crankshaft is just
When the sprocket wheel and first cam shaft timing chain wheel line of centres, crankshaft timing sprocket and the second cam shaft timing chain wheel line of centres shape
At angle be 15 ° -20 °.
In the timing system of engine for motorcycle above-mentioned, the both ends of the top cover chain gib block are equipped with hollow lead
To block.
Compared with prior art, the utility model in order to adapt to Chongqing well-to-do level 998 series motorcycle engine 11000r/
The high revolving speed of min is equipped with concavo-convex continuous tooth form spline group, and tooth form in the axis hole on the utility model crankshaft timing sprocket
Spline group is equipped with hypodontia position at one, and forms the main spline of indent, compared to the axis hole of only one existing fit key,
The intensity that the design of tooth form spline group increases crankshaft timing sprocket has so that the occlusal surface between crankshaft and axis hole is bigger
Higher concentricity makes uniform force between crankshaft and axis hole, while reducing vibration when crankshaft timing sprocket work, reduces
Noise；The main spline of indent plays the role of positioning, and makes crankshaft and each installation site immobilization of axis hole, avoids phase angle and change
Become bring installation question.
The two sides of the utility model carrier bar, which are equipped with, extends reinforcement part, and the lower part of carrier bar is set there are two sprocket, the sprocket
Profile angle size is 68 ° 21 ' -68 ° 51 ', and profile angle of 60 ° or so compared to traditional carrier bar, the utility model is prolonged by adding
Stretch the arc flank profil that reinforcement part increases carrier bar, while sprocket profile angle also increases accordingly, improve carrier bar structural strength and
Fatigue behaviour, structural strength and fatigue behaviour improve 22.9%, can better adapt to the motor of 998 series of Chongqing well-to-do level
The high revolving speed of car engine.
In addition, the timing chain component outside between the utility model crankshaft timing sprocket and the first cam shaft timing chain wheel
It equipped with timing chain guided way, play the guiding role, while limiting the vibration of timing chain component, timing chain guided way is equipped with
Noise reduction ring, alleviates the self weight of timing chain guided way, while improving its structural strength, plays auxiliary Noise Reduction；Crankshaft
Tensioning rail assembly is equipped on the outside of timing chain component between timing sprocket and the second cam shaft timing chain wheel, tensioning rail assembly is in
Arc-shaped setting, and using crankshaft timing sprocket center as vertex, the angle for two lines that three centre of sprocket are formed is 15 °-
20 °, the angle design of this range makes the tension effects of timing chain component excellent；First cam shaft timing chain wheel and second
Top cover chain gib block is equipped on the outside of timing chain component between cam shaft timing chain wheel, top cover chain gib block plays guiding and makees
With, while timing chain component being compressed, prevent it from running chain, running tooth；Three's comprehensive function plays the movement of timing chain component
Guiding and stabilization, improve the stability of timing system.
To sum up, the higher revolving speed of motorcycle engine, structural strength are high, stability is good with adapting to for the utility model
Advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of crankshaft timing sprocket；
Fig. 3 is the side sectional view of crankshaft timing sprocket；
Fig. 4 is the structural schematic diagram of timing chain component；
Fig. 5 is the front view of timing chain component；
Fig. 6 is the structural schematic diagram of carrier bar；
Fig. 7 is the structural schematic diagram for being tensioned rail assembly；
Fig. 8 is the structural schematic diagram of timing chain guided way；
Fig. 9 is the structural schematic diagram of top cover chain gib block.
The label in accompanying drawing is: 1- crankshaft timing sprocket, the first cam shaft timing chain wheel of 2-, the second camshaft drive chain of 3-
Wheel, 4- timing chain component, 5- timing chain guided way, 6- are tensioned rail assembly, 7- top cover chain gib block, 11- axis hole, 12-
Tooth form spline group, the main spline of 13-, 14- timing marks hole, 41- guide plate, 42- carrier bar, 43- pin shaft, 411- turn blue guide plate, 421-
Extend reinforcement part, 422- sprocket, 51- noise reduction ring, 61- hydraulic tensioner, 71- guide pad.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model
The foundation of limitation.
Embodiment: the timing system of engine for motorcycle, structure is as shown in Figures 1 to 9, including crankshaft timing sprocket 1,
First cam shaft timing chain wheel 2 and the second cam shaft timing chain wheel 3, crankshaft timing sprocket 1,2 and of the first cam shaft timing chain wheel
It is cooperatively connected between second cam shaft timing chain wheel 3 through timing chain component 4；Axis hole is offered on the crankshaft timing sprocket 1
11, axis hole 11 is interior to be equipped with concavo-convex continuous tooth form spline group 12, and the tooth form spline group 12 is provided with hypodontia at one and is formed
Indent main spline 13；Outside timing chain component 4 between the crankshaft timing sprocket 1 and the first cam shaft timing chain wheel 2
Side is equipped with timing chain guided way 5, outside the timing chain component 4 between crankshaft timing sprocket 1 and the second cam shaft timing chain wheel 3
Side is equipped with tensioning rail assembly 6, the timing chain component 4 between the first cam shaft timing chain wheel 2 and the second cam shaft timing chain wheel 3
Outside is equipped with top cover chain gib block 7.
The timing chain component 4 includes that the guide plate 41 of two sides and one group between two flipper guides 41 are overlapping
Carrier bar 42；The carrier bar 42 is bidentate structure, and the two sides of carrier bar, which are equipped with, extends reinforcement part 421.
The carrier bar 42 is 422 structure of bidentate sprocket, and the profile angle of the sprocket 422 is 68 ° 36 '.
The extended line position for extending reinforcement part 421 and being located at two connecting hole lines of centres on carrier bar 42.
The tensioning rail assembly 6 is equipped with hydraulic tensioner 61；The tensioning rail assembly 6 is arc-shaped setting, circular arc pair
The radius answered is 318.5mm.
First cam shaft timing chain wheel 2 is identical with 3 size of the second cam shaft timing chain wheel.
The crankshaft timing sprocket 1 is equipped with timing marks hole 14.
The timing chain guided way 5 is equipped with noise reduction ring 51.
Using 1 center of crankshaft timing sprocket as vertex, 2 center of crankshaft timing sprocket 1 and the first cam shaft timing chain wheel
The angle that line, crankshaft timing sprocket 1 and 3 line of centres of the second cam shaft timing chain wheel are formed is 18 °.
The both ends of the top cover chain gib block 7 are equipped with hollow guide pad 71.
The guide plate 41 with a thickness of 0.8mm, carrier bar 42 with a thickness of 1.0mm.
It is connected between two flipper guide 41 and intermediate multiple carrier bars 42 being overlapping through pin shaft 43.
The tooth form of the crankshaft timing sprocket 1, the first cam shaft timing chain wheel 2 and the second cam shaft timing chain wheel 3 according to
42 shape of carrier bar of timing chain component 4, which is made, to be correspondingly improved.
The guide plate 41 includes the guide plate 411 that turns blue, and the guide plate 411 that turns blue plays the role of positioning.
The structural strength and fatigue behaviour of the carrier bar 42 improve 22.9%.
The assembly method of the utility model: crankshaft timing sprocket 1 is mounted on crankshaft, by the first cam shaft timing chain wheel
2 and second cam shaft timing chain wheel 3 be mounted on camshaft, and will be cooperatively connected between three by timing chain component 4,
By main 13 location and installation of spline, the installation site for keeping crankshaft each with axis hole is fixed for middle crankshaft and crankshaft timing sprocket axis hole
Change, avoids phase angle and change bring installation question；Between crankshaft timing sprocket 1 and the first cam shaft timing chain wheel 2
Timing chain guided way 5 is installed, timing chain guided way 5 play the guiding role, while limiting timing chain on the outside of timing chain component 4
The vibration of bar assembly 4, reduces noise when timing system work, and the noise reduction ring 51 on chain guided way 5 plays auxiliary noise reduction and makees
With；Top cover is installed on the outside of timing chain component 4 between the first cam shaft timing chain wheel 2 and the second cam shaft timing chain wheel 3
Chain gib block 7, top cover chain gib block 7 play the guiding role, timing chain component 4 are compressed, and prevent it from running chain, running tooth, together
When limit timing chain component 4 vibration, reduce timing system work when noise；It is convex in crankshaft timing sprocket 1 and second
Installation tensioning rail assembly 6 on the outside of timing chain component 4 between wheel shaft timing sprocket 3, is tensioned on rail assembly 6 and installs hydraulic tensioning
Device 61 withstands tensioning rail assembly 6 by hydraulic tensioner 61, is tensioned timing chain component 4.
Claims (10)
1. the timing system of engine for motorcycle, it is characterised in that: including crankshaft timing sprocket (1), the first camshaft timing
Sprocket wheel (2) and the second cam shaft timing chain wheel (3), crankshaft timing sprocket (1), the first cam shaft timing chain wheel (2) and second are convex
It is cooperatively connected between wheel shaft timing sprocket (3) through timing chain component (4)；Axis hole is offered on the crankshaft timing sprocket (1)
(11), concavo-convex continuous tooth form spline group (12) is equipped in axis hole (11), the tooth form spline group (12) is provided at one
The main spline (13) for the indent that hypodontia is formed；Between the crankshaft timing sprocket (1) and the first cam shaft timing chain wheel (2) just
When chain assemblies (4) on the outside of be equipped with timing chain guided way (5), crankshaft timing sprocket (1) and the second cam shaft timing chain wheel (3)
Between timing chain component (4) on the outside of be equipped with tensioning rail assembly (6), the first cam shaft timing chain wheel (2) and the second camshaft
Top cover chain gib block (7) is equipped on the outside of timing chain component (4) between timing sprocket (3).
2. the timing system of engine for motorcycle according to claim 1, it is characterised in that: the timing chain component
(4) include carrier bar (42) that the guide plate (41) of two sides and one group between two flipper guides (41) are overlapping；The chain
Plate (42) is bidentate structure, and the two sides of carrier bar, which are equipped with, extends reinforcement part (421).
3. the timing system of engine for motorcycle according to claim 2, it is characterised in that: the carrier bar (42) is double
Toothed chain tooth (422) structure, the profile angle size of the sprocket (422) are 68 ° 21 ' -68 ° 51 '.
4. the timing system of engine for motorcycle according to claim 2, it is characterised in that: the extension reinforcement part
(421) it is located at the extended line position of carrier bar (42) upper two connecting hole lines of centres.
5. the timing system of engine for motorcycle according to claim 1, it is characterised in that: the tensioning rail assembly
(6) hydraulic tensioner (61) are equipped with；The tensioning rail assembly (6) is arc-shaped setting, and the corresponding radius of circular arc is
270.0mm-350.0mm。
6. the timing system of engine for motorcycle according to claim 1, it is characterised in that: first camshaft is just
When sprocket wheel (2) it is identical with the second cam shaft timing chain wheel (3) size.
7. the timing system of engine for motorcycle according to claim 1, it is characterised in that: the crankshaft timing sprocket
(1) timing marks hole (14) are equipped with.
8. the timing system of engine for motorcycle according to claim 1, it is characterised in that: the timing chain guiding
Rail (5) is equipped with noise reduction ring (51).
9. the timing system of engine for motorcycle according to claim 1, it is characterised in that: with the crankshaft timing chain
Wheel (1) center is vertex, crankshaft timing sprocket (1) and the first cam shaft timing chain wheel (2) line of centres, crankshaft timing sprocket
(1) and the angle of the second cam shaft timing chain wheel (3) line of centres formation is 15 ° -20 °.
10. the timing system of engine for motorcycle according to claim 1, it is characterised in that: the top cover chain is led
Hollow guide pad (71) is equipped with to the both ends of item (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910299.8U CN208380653U (en) | 2018-06-13 | 2018-06-13 | The timing system of engine for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910299.8U CN208380653U (en) | 2018-06-13 | 2018-06-13 | The timing system of engine for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380653U true CN208380653U (en) | 2019-01-15 |
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ID=64967424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820910299.8U Active CN208380653U (en) | 2018-06-13 | 2018-06-13 | The timing system of engine for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825323A (en) * | 2018-06-13 | 2018-11-16 | 湖州求精汽车链传动有限公司 | A kind of timing system of engine for motorcycle |
-
2018
- 2018-06-13 CN CN201820910299.8U patent/CN208380653U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825323A (en) * | 2018-06-13 | 2018-11-16 | 湖州求精汽车链传动有限公司 | A kind of timing system of engine for motorcycle |
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