CN202597436U - Crankshaft mechanism of motorcycle - Google Patents
Crankshaft mechanism of motorcycle Download PDFInfo
- Publication number
- CN202597436U CN202597436U CN 201220175547 CN201220175547U CN202597436U CN 202597436 U CN202597436 U CN 202597436U CN 201220175547 CN201220175547 CN 201220175547 CN 201220175547 U CN201220175547 U CN 201220175547U CN 202597436 U CN202597436 U CN 202597436U
- Authority
- CN
- China
- Prior art keywords
- shaft neck
- main shaft
- journal
- main
- periphery
- 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
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a crankshaft mechanism of a motorcycle. The crankshaft mechanism comprises a main shaft neck and a secondary shaft neck, wherein a section of secondary shaft neck is arranged at the outer end of the main shaft neck; a gear position is arranged at the periphery of the secondary shaft neck, which is arranged at a joint of the outer end of the main shaft neck and the secondary shaft neck; a bearing sleeve covers the periphery of the main shaft neck; a connecting rod shaft neck is arranged in the center of the main shaft neck and is perpendicular to the main shaft neck; and an oil inlet is formed in the outer side of the secondary shaft neck. The crankshaft mechanism has the beneficial effects that the bearing sleeve is reasonably arranged at the periphery of the main shaft neck, and the secondary shaft neck is arranged outside the main shaft neck in a matching mode, so that the fit clearance of the shafts is reduced, the structural stability is improved, the overall mechanical performance of the crankshaft is improved, and the sealing property is high; and the connecting rod shaft neck vertically pass through the centre of the main shaft neck so as to increase the fit precision between the connecting rod shaft neck and the main shaft neck.
Description
Technical field
The utility model relates to a kind of engine rotary gadget, relates in particular to a kind of motorcycle crank mechanism.
Background technique
Bent axle is as the rotary gadget of engine; After loading onto connecting rod, can accept connecting rod about (back and forth) motion become circulation (rotation) and move, be important parts on the motor; Its material is to be processed by structural carbon steel or spheroidal graphite cast iron, comprises main journal and connecting rod neck.Main journal wherein is installed on the cylinder body, and the connecting rod neck is connected with crank pin end pore, and the connecting rod small end hole is connected with steam-cylinder piston, is a typical slidercrank mechanism.The rotation of bent axle is the power source of motor, also is the driving source of whole mechanical system.But present domestic crankshaft production line majority is made up of machine tool and special purpose machine tool, and manufacturing efficiency and automaticity are relatively low.In particular for motorcycle structure, roughing equipment adopts multi-tool lathe turning crankshaft main journal more and turns neck, and the mass stability of operation is poor, is easy to generate bigger internal stress, is difficult to reach rational machining allowance.Simultaneously, the crankshaft structure of being processed is unstable, lacks fixing-assembly around the main shaft, and is particularly accurate inadequately with the jointing place, position of pitman shaft.Therefore, to above aspect, need reasonably improve existing technology.
The model utility content
To above defective, the utility model provide a kind of help dwindling a matching gap, structure firm, can improve bent axle overall mechanical properties, good sealing performance motorcycle crank mechanism, to solve many deficiencies of existing technology.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of motorcycle crank mechanism comprises main journal, inferior axle journal, and the inferior axle journal outer periphery that said main journal outer end is provided with one section time axle journal and is positioned at the two connecting part has the gear position; Main journal periphery wherein is with bearing housing.Said main journal center position is provided with rod journal and this rod journal perpendicular to main journal, is positioned at time axle journal outside and offers an oil inlet hole.
The beneficial effect of the described motorcycle crank mechanism of the utility model is: through bearing housing rationally being set around the main journal and being equipped with time axle journal in the outside, help dwindling a matching gap, improve the structure steadiness, improve the bent axle overall mechanical properties, sealing is better; Through with rod journal vertically through the main journal center position, can strengthen the validity that cooperates between the two.
Description of drawings
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the said motorcycle crank mechanism of a utility model embodiment schematic representation.
Among the figure:
1, main journal; 2, rod journal; 3, gear position; 4, inferior axle journal; 5, oil inlet hole; 6, connecting-rod head; 7, bearing housing; 8, oil circuit.
Embodiment
As shown in Figure 1, the described motorcycle crank mechanism of the utility model embodiment comprises main journal 1, rod journal 2, inferior axle journal 4, and inferior axle journal 4 peripheries that said main journal 1 outer end is provided with one section time axle journal 4 and is positioned at the two connecting part are provided with gear position 3; Main journal 1 periphery wherein is with bearing housing 7, and this main journal 1 center position is provided with rod journal 2 and this rod journal 2 perpendicular to main journal 1; Be positioned at main journal 1 inside and be provided with oil circuit 8, be positioned at time axle journal 4 outsides and offer an oil inlet hole 5, be positioned at rod journal 2 one ends and be set to connecting-rod head 6.
Above embodiment is more preferably embodiment a kind of of the utility model, and common variation that those skilled in the art carry out in present technique scheme scope and replacement should be included in the protection domain of the utility model.
Claims (3)
1. a motorcycle crank mechanism comprises main journal (1), inferior axle journal (4), it is characterized in that: inferior axle journal (4) periphery that said main journal (1) outer end is provided with one section time axle journal (4) and is positioned at the two connecting part is provided with gear position (3); Main journal wherein (1) periphery is with bearing housing (7).
2. motorcycle crank mechanism according to claim 1 is characterized in that: said main journal (1) center position is provided with rod journal (2) and this rod journal (2) perpendicular to main journal (1).
3. motorcycle crank mechanism according to claim 1 is characterized in that: be positioned at time axle journal (4) outside and offer an oil inlet hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175547 CN202597436U (en) | 2012-04-24 | 2012-04-24 | Crankshaft mechanism of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175547 CN202597436U (en) | 2012-04-24 | 2012-04-24 | Crankshaft mechanism of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597436U true CN202597436U (en) | 2012-12-12 |
Family
ID=47314981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220175547 Expired - Fee Related CN202597436U (en) | 2012-04-24 | 2012-04-24 | Crankshaft mechanism of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015115669A1 (en) * | 2015-09-17 | 2017-03-23 | Steyr Motors Gmbh | Device for supplying oil to a connecting rod bearing point |
-
2012
- 2012-04-24 CN CN 201220175547 patent/CN202597436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015115669A1 (en) * | 2015-09-17 | 2017-03-23 | Steyr Motors Gmbh | Device for supplying oil to a connecting rod bearing point |
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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: 20121212 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |