CN203570427U - Strengthening structure of motorcycle engine - Google Patents
Strengthening structure of motorcycle engine Download PDFInfo
- Publication number
- CN203570427U CN203570427U CN201320734669.4U CN201320734669U CN203570427U CN 203570427 U CN203570427 U CN 203570427U CN 201320734669 U CN201320734669 U CN 201320734669U CN 203570427 U CN203570427 U CN 203570427U
- Authority
- CN
- China
- Prior art keywords
- strengthening structure
- motorcycle engine
- left crank
- canine tooth
- special way
- 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
Links
- 238000005728 strengthening Methods 0.000 title claims abstract description 18
- 210000003464 cuspid Anatomy 0.000 claims description 13
- 238000003754 machining Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a strengthening structure of a motorcycle engine. The strengthening structure comprises a crankshaft, a left crank, a left crankshaft box body, a starting big gear and a flywheel. Due to the facts that the left crank journal of the crankshaft is increased, the length of the left crank is decreased, the bore diameter of a crankshaft hole of the left crankshaft box body is increased, and the bore diameter of a shaft sleeve inner hole of the starting big tooth is increased, the structural strength of the engine is improved.
Description
Technical field
The utility model relates to a kind of motorcycle engine strengthening structure.
Background technique
At present, along with the development of motorcycle culture, the variation of motorcycle purposes, large discharge capacity high-performance motorcycle is liked by consumers in general deeply.Large discharge capacity high-performance motorcycle requirement speed is fast, manoeuvring performance good.For reaching these requirement, increase substantially the existing power with motor, rotating speed, compression ratio, but because now using the structural strength of motor inadequate, in use often occur the phenomenons such as crankshaft breakdown, casing cracking.Therefore, be necessary further to improve now by the structural strength of motor to meet the usage requirement of large discharge capacity high-performance enginer.
Summary of the invention
The purpose of this utility model is to provide and a kind ofly can effectively improves engine structure intensity, meets the usage requirement of 200cc-250cc high-performance motorcycle.
Technological scheme
The purpose of this utility model is achieved in that a kind of motorcycle engine strengthening structure, comprises bent axle, left crank, left crankcase, startup canine tooth, flywheel, and its special way is: the left crank journal diameter ￠ 24.8-24.993mm of bent axle; The machining crankshaft bearing borehole aperture of left crankcase is ￠ 72 mm; Start the inner hole of shaft sleeve aperture ￠ 25.025-25.050 mm of canine tooth; Flywheel convex closure width is 13mm.
Described a kind of motorcycle engine strengthening structure, its special way is: the left crank length of bent axle is 100.7 mm, the bearing of ￠ 35 is installed on left crank, and left crank is provided with the timing drive sprocket of integrated 17 tooth toothed chains, transverse tooth thickness 4.6-4.8mm;
Described a kind of motorcycle engine strengthening structure, its special way is: the startup canine tooth locating face of left crankcase is lower than left cover closing lid face 5mm;
Described a kind of motorcycle engine strengthening structure, its special way is: starting canine tooth thickness is 17.4-17.6mm.
Effective effect:
Technological scheme described in the utility model, the left crank journal of bent axle increases, and the length of left crank shortens, and the aperture of the crankshaft hole of left crankcase, startup canine tooth inner hole of shaft sleeve increases, and has improved the structural strength of motor
.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the schematic diagram of a kind of motorcycle engine strengthening structure crankshaft crank described in the utility model.
Fig. 2 is the schematic diagram of a kind of motorcycle engine strengthening structure left crankcase bent axle described in the utility model.
Fig. 3 is the cut-away view that a kind of motorcycle engine strengthening structure described in the utility model starts canine tooth.
Fig. 4 is the cut-away view of a kind of motorcycle engine strengthening structure flywheel described in the utility model.
Fig. 5 is the structural representation of a kind of motorcycle engine strengthening structure described in the utility model.
embodiment:
Below in conjunction with accompanying drawing, the utility model embodiment's concrete structure is further described.
In Fig. 1, left crank 11 axle journal 111 diameters of bent axle 1 are ￠ 24.8-24.993mm, and left crank 11 length are 100.7 mm, and the bearing 113 of ￠ 35 is installed on left crank 11, left crank 11 is provided with the timing drive sprocket 112 of integrated 17 tooth toothed chains, transverse tooth thickness 4.6-4.8mm.
In Fig. 2, machining crankshaft bearing borehole 21 apertures of left crankcase 2 are ￠ 72 mm, start canine tooth locating face 22 lower than left cover closing lid face 5mm.
In Fig. 3, start the inner hole of shaft sleeve 31 aperture ￠ 25.025-25.050 mm of canine tooth 3, thickness is 17.4-17.6mm.
In Fig. 4, flywheel 4 convex closure 41 width are 13mm.
In Fig. 5, left crank 11 axle journals 111 of bent axle 1 increase, and the length of left crank 11 shortens, and the aperture of the machining crankshaft bearing borehole 21 of left crankcase 2, startup canine tooth 3 inner hole of shaft sleeves 31 increases, and has improved the structural strength of motor.
The above, be only preferred embodiment of the present utility model, not structure of the present utility model done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of the technical solution of the utility model.
Claims (4)
1. a motorcycle engine strengthening structure, comprises bent axle, left crank, left crankcase, startup canine tooth, flywheel, and its special way is: the left crank journal diameter ￠ 24.8-24.993mm of bent axle; The machining crankshaft bearing borehole aperture of left crankcase is ￠ 72 mm; Start the inner hole of shaft sleeve aperture ￠ 25.025-25.050 mm of canine tooth; Flywheel convex closure width is 13mm.
2. a kind of motorcycle engine strengthening structure according to claim 1, its special way is: the left crank length of bent axle is 100.7 mm, the bearing of ￠ 35 is installed on left crank, and left crank is provided with the timing drive sprocket of integrated 17 tooth toothed chains, transverse tooth thickness 4.6-4.8mm.
3. a kind of motorcycle engine strengthening structure according to claim 1, its special way is: the startup canine tooth locating face of left crankcase is lower than left cover closing lid face 5mm.
4. a kind of motorcycle engine strengthening structure according to claim 1, its special way is: starting canine tooth thickness is 17.4-17.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320734669.4U CN203570427U (en) | 2013-11-20 | 2013-11-20 | Strengthening structure of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320734669.4U CN203570427U (en) | 2013-11-20 | 2013-11-20 | Strengthening structure of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570427U true CN203570427U (en) | 2014-04-30 |
Family
ID=50538161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320734669.4U Expired - Fee Related CN203570427U (en) | 2013-11-20 | 2013-11-20 | Strengthening structure of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514623A (en) * | 2014-12-15 | 2015-04-15 | 江门天钇金属工业有限公司 | Motorcycle engine |
-
2013
- 2013-11-20 CN CN201320734669.4U patent/CN203570427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514623A (en) * | 2014-12-15 | 2015-04-15 | 江门天钇金属工业有限公司 | Motorcycle engine |
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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: 20140430 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |