CN208380653U - The timing system of engine for motorcycle - Google Patents

The timing system of engine for motorcycle Download PDF

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Publication number
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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China
Prior art keywords
timing
sprocket
timing chain
cam shaft
crankshaft
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CN201820910299.8U
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Chinese (zh)
Inventor
吕辉
钱江
翁建良
缪优优
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HUZHOU QIUJING CHAIN TRANSMISSION CO Ltd
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HUZHOU QIUJING CHAIN TRANSMISSION CO Ltd
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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

The timing system of engine for motorcycle
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).
CN201820910299.8U 2018-06-13 2018-06-13 The timing system of engine for motorcycle Active CN208380653U (en)

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)

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CN208380653U true CN208380653U (en) 2019-01-15

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CN201820910299.8U Active CN208380653U (en) 2018-06-13 2018-06-13 The timing system of engine for motorcycle

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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