CN202971535U - Engine crankshaft - Google Patents
Engine crankshaft Download PDFInfo
- Publication number
- CN202971535U CN202971535U CN 201220568813 CN201220568813U CN202971535U CN 202971535 U CN202971535 U CN 202971535U CN 201220568813 CN201220568813 CN 201220568813 CN 201220568813 U CN201220568813 U CN 201220568813U CN 202971535 U CN202971535 U CN 202971535U
- Authority
- CN
- China
- Prior art keywords
- engine
- journal
- bent axle
- crankshaft
- rod journal
- 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 belongs to the technical field of manufacture of engines, and specifically discloses an engine crankshaft. The engine crankshaft comprises a crankshaft body consisting of a main journal and a rod journal, wherein the crank throw radius H from the rod journal to the main journal is 210 mm; the diameter phi of each of the main journal and the rod journal is 290 mm, and the distance L between adjacent cylinders on the crankshaft body is 530 mm; and the circular arc radius R of the width of a crank arm of the rod journal is 380 mm. Through increasing the crank throw radius of the crankshaft body and increasing the width of the crank arm of the crankshaft body, the compression ratio of the engine is effectively improved, the power of the engine is improved, the oil consumption is reduced, and the economical efficiency and applicability of the engine is good; and meanwhile, the rigidity of the crankshaft is effectively improved, the deformation of the crankshaft is small under a heat-engine or cold-engine state, the vibration of the engine is reduced, and the operation of the engine is stable and safe.
Description
Technical field
The utility model belongs to the engine manufacturing technology field, is specifically related to a kind of engine crankshaft, be more definitely a kind of be the bent axle of the four stroke engine of 320mm for cylinder diameter.
Background technique
The crank throw radius H that to be widely used at present the land be the four stroke engine of 320mm with the cylinder diameter of power station and marine main controllable machine mostly is 200mm, the power of motor is the demand of satisfying the market to this series products power not more and more, and by design improvement, the power of such four stroke engine also has certain space that promotes.
Summary of the invention
For above-mentioned deficiency of the prior art, the utility model aims to provide a kind of engine crankshaft, has improved the compression ratio of motor, has promoted the power of motor, has reduced oil consumption, makes the Economy of motor, applicability better.
In order to achieve the above object, the technical solution of the utility model: a kind of engine crankshaft, be applied to the four stroke engine that cylinder diameter is 320mm, comprise the bent axle body that contains main journal and rod journal, wherein, described rod journal to the crank throw radius H of main journal be 210mm.
Further, the diameter phi of described main journal and rod journal is 290mm; Cylinder adjacent on described bent axle body is 530mm apart from L.
The width radius of arc R that cranks arm of described rod journal is 380mm.
The oil duct through hole that has the connecting engine piston rod on described rod journal, the two end part rounding of this oil duct through hole arranges.
Have a plurality of rod journals on described bent axle body, and be provided with the balancing weight installation position that several are used for the equilibrate counterweight of the whole bent axle body of installation balance on this bent axle body.
The beneficial effects of the utility model: the crank throw radius of bent axle body is set to 210mm, make the stroke increase of motor be adjusted into 420mm, effectively promoted the compression ratio of motor, promoted the power of motor, reduce oil consumption, made the Economy of this motor, applicability better.
Further increase the width of cranking arm of bent axle body, effectively improved the rigidity of bent axle, made the distortion of bent axle under heat engine or cold machine state less, reduced the vibration of motor, made more steadily safety of motor operation.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is stereogram of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is along the sectional view of A-A line in Fig. 2.
Embodiment
Further describe the utility model below in conjunction with specific embodiment and accompanying drawing.
A kind of cylinder diameter that is applied to as shown in Fig. 1 to Fig. 3 is that the engine crankshaft of the four stroke engine of 320mm comprises the bent axle body that contains main journal 1 and rod journal 2, wherein, described rod journal 2 to the crank throw radius H of main journal 1 be 210mm.
The utility model be carry out on the basis of the bent axle of original four stroke engine improved, by original 200mm crank throw radius H is brought up to present 210mm, and correspondingly adjustment is arranged on the counterweight that is used for the equilibrate counterweight of the whole bent axle body of balance on the bent axle body, make this engine crankshaft be assemblied in motor, and can not produce unbalanced situation in operation.By improving crank throw radius H, make the stroke raising of motor adjust to 420mm, due to the cylinder body constancy of volume of cylinder, be namely the air pressure compression ratio that has promoted in cylinder comparatively speaking, and then promoted the power of motor.
For the variation of the crank throw radius H that adapts to the bent axle body, the diameter phi of described main journal 1 and rod journal 2 is adjusted into is 290mm; On described bent axle body, adjacent cylinder is adjusted into 530mm apart from L.Simultaneously, the width radius of arc R that cranks arm of described rod journal 2 is adjusted into is 380mm.Increased the width of cranking arm, effectively improved the rigidity of bent axle, made the distortion of this bent axle under heat engine or cold machine state less, the vibration when having reduced the motor operation makes more steadily safety of motor operation.
The oil duct through hole 21 that has the connecting engine piston rod on described rod journal 2, the two end part rounding of this oil duct through hole 21 arranges, and has guaranteed that engine piston bar and agreeing with of this rod journal 2 are located by connecting.Have a plurality of rod journals 2 on described bent axle body, several balancing weights installation position 3 that is provided with on this bent axle body is used for installing equilibrate counterweight, effect is the stable rotation of the whole bent axle body of balance, thereby avoid vibration-generating to affect the normal operation of motor, the working life of avoiding simultaneously reducing bent axle.
The above technological scheme that the utility model embodiment is provided is described in detail, used specific case herein the utility model embodiment's principle and mode of execution are set forth, above embodiment's explanation is only applicable to help to understand the utility model embodiment's principle; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, all will change on embodiment and application area, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. an engine crankshaft, be applied to the four stroke engine that cylinder diameter is 320mm, comprises the bent axle body that contains main journal (1) and rod journal (2), it is characterized in that: described rod journal (2) to the crank throw radius H of main journal (1) be 210mm.
2. a kind of engine crankshaft according to claim 1, it is characterized in that: the diameter phi of described main journal (1) and rod journal (2) is 290mm; Cylinder adjacent on described bent axle body is 530mm apart from L.
3. a kind of engine crankshaft according to claim 1 and 2, it is characterized in that: the width radius of arc R that cranks arm of described rod journal (2) is 380mm.
4. a kind of engine crankshaft according to claim 1, is characterized in that: have the oil duct through hole (21) that leads to the engine piston bar on described rod journal (2), the two end part rounding setting of this oil duct through hole (21).
5. a kind of engine crankshaft according to claim 1, it is characterized in that: have a plurality of rod journals (2) on described bent axle body, and be provided with the balancing weight installation position (3) that several are used for the equilibrate counterweight of the whole bent axle body of installation balance on this bent axle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568813 CN202971535U (en) | 2012-10-31 | 2012-10-31 | Engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568813 CN202971535U (en) | 2012-10-31 | 2012-10-31 | Engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971535U true CN202971535U (en) | 2013-06-05 |
Family
ID=48512618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220568813 Expired - Fee Related CN202971535U (en) | 2012-10-31 | 2012-10-31 | Engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971535U (en) |
-
2012
- 2012-10-31 CN CN 201220568813 patent/CN202971535U/en not_active Expired - Fee Related
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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: 20130605 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |