CN106763121A - A kind of engine crankshaft, engine and motorcycle - Google Patents
A kind of engine crankshaft, engine and motorcycle Download PDFInfo
- Publication number
- CN106763121A CN106763121A CN201710197860.2A CN201710197860A CN106763121A CN 106763121 A CN106763121 A CN 106763121A CN 201710197860 A CN201710197860 A CN 201710197860A CN 106763121 A CN106763121 A CN 106763121A
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- Prior art keywords
- engine
- crankshaft
- connection neck
- counterweight
- weight
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- 208000020442 loss of weight Diseases 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/08—Crankshafts made in one piece
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a kind of engine crankshaft, including crankshaft body, be offset to crankshaft body axis connection neck and the counterweight for controlling crankshaft body rotary balance, connection neck is provided with the lightening hole for being easy to loss of weight.The present invention carries out appropriate duplicate removal by connecting rod neck portion, such that it is able to equally carry out the removal of constant weight in the counterweight part on connecting rod neck opposite, so that other parts have been designed with more structure spaces, whole engine can realize compact conformation in other words, meet the power requirement of same engine so that engine weight is lighter.When twin-tub, the bent axle part of each cylinder can so be designed, and so the weight and size of bent axle are obtained for reduction on the whole.The invention also discloses a kind of engine and motorcycle including above-mentioned engine crankshaft.
Description
Technical field
The present invention relates to motorcycle manufacturing technology field, more specifically to a kind of engine crankshaft.Additionally, this hair
It is bright to further relate to a kind of engine and motorcycle including above-mentioned engine crankshaft.
Background technology
Huge discharge crankshaft of motorcycle is generally many cylinder crankshafts of monoblock type, carries the power output of engine, working environment
Badly, load big, therefore intensity for bent axle, performance requirement are high.At this stage, the research and development manufacture of motorcycle product, towards
Compact conformation, lightweight, high-power direction are developed, and the waste of cost is avoided in Design and manufacturing process, also avoid manufacture from tying
The heaviness of structure.Also become increasingly complex to reducing the requirement and more functional requirements discharged, structure design with society, to producing
The space of product, Structural Design Requirement more and more higher.
Existing huge discharge motorcycle huge discharge bent axle is generally that twin-tub is more, in order to meet the requirement of rotary balance, even
The opposite of bar neck portion devises counterweight part, and this part is general to occupy certain space than larger, is also unfavorable for whole hair
The reduction of motivation weight and volume.
In sum, how the engine crankshaft that a kind of design structure is simple, overall weight is significantly reduced is provided, is current
Those skilled in the art's problem demanding prompt solution.
The content of the invention
In view of this, it is an object of the invention to provide a kind of engine crankshaft, the engine crankshaft simple structure, and it is overall
Weight is small, helps to reduce the overall weight of engine.
It is a further object of the present invention to provide a kind of engine and motorcycle including above-mentioned engine crankshaft.
To achieve these goals, the present invention provides following technical scheme：
A kind of engine crankshaft, including crankshaft body, the crankshaft body upper offset are in the axis of the crankshaft body
Connection neck and the counterweight for controlling the crankshaft body rotary balance, the connection neck are provided with the lightening hole for being easy to loss of weight.
Preferably, the connection neck is provided with least two lightening holes, and lightening hole described at least two is on the bent axle
The radial section of body is symmetrical arranged.
Preferably, the connection neck is cylinder, and the lightening hole is the cylindrical hole being arranged on the connection neck, and
The bottom of the cylindrical hole is circular arc.
Preferably, the counterweight is correspondingly arranged with the position of the lightening hole.
Preferably, the connection radial section of the neck on the crankshaft body is symmetrical arranged, and the counterweight is on described
Connection neck is symmetrical arranged, or the counterweight is symmetrical arranged on the lightening hole on the corresponding connection neck.
Preferably, the center line of the lightening hole has angle with the axis of the crankshaft body.
A kind of engine, including engine crankshaft, the engine crankshaft are that the engine described in above-mentioned any one is bent
Axle.
A kind of motorcycle, including engine, the engine are engine described above.
The present invention carries out appropriate duplicate removal by connecting rod neck portion, same such that it is able to the counterweight part on connecting rod neck opposite
Sample carries out the removal of constant weight, so that other parts have been designed with more structure spaces, whole engine in other words
Compact conformation can be realized, the power requirement of same engine is met so that engine weight is lighter.For the feelings of twin-tub
Condition, the bent axle part of each cylinder can so be designed, and so the weight and size of bent axle are obtained for reduction on the whole.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the front elevational view of engine crankshaft provided by the present invention；
Fig. 2 is the sectional side view of engine crankshaft provided by the present invention；
Fig. 3 is the partial schematic diagram of lightening hole in engine crankshaft provided by the present invention.
In Fig. 1 to Fig. 3：
10 is crankshaft body, 1 is connection neck, 11 is lightening hole, 2 is counterweight.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Core of the invention is to provide a kind of engine crankshaft, the engine crankshaft simple structure, and overall weight is small, has
Help reduce the overall weight of engine.
Another core of the invention is to provide a kind of engine and motorcycle including above-mentioned engine crankshaft.
Fig. 1 to Fig. 3 is refer to, Fig. 1 is the front elevational view of engine crankshaft provided by the present invention；Fig. 2 is carried by the present invention
The sectional side view of the engine crankshaft of confession；Fig. 3 is the partial schematic diagram of lightening hole in engine crankshaft provided by the present invention.
A kind of engine crankshaft provided by the present invention, including crankshaft body 10, connection neck 1 and counterweight 2, wherein, connection
Neck 1 is offset to the axis of crankshaft body 10 on crankshaft body, and is fixed on crankshaft body 10, and counterweight 2 is used to control
The rotary balance of crankshaft body, in addition, connection neck 1 is provided with the lightening hole 11 for being easy to loss of weight.
It should be noted that lightening hole 11 is just provided in connecting through hole or blind hole on neck 1, effect is to mitigate connection neck
Weight at 1, on the premise of not influenceing to connect the internal action of neck 1, drilling or blowhole on connection neck 1, so as to the company of reduction
Connect the weight of neck 1.
It is mainly used in controlling the rotary balance of bent axle due to counterweight 2, due to connecting the weight reduction of neck 1, so counterweight 2
Weight is minimized, and the demand weight of counterweight 2 is reduced to a certain extent, reduces the overall weight of engine, further, since
Reduce the space shared by counterweight 2, additionally it is possible to realize the space reasonable distribution of engine.
The present invention carries out appropriate duplicate removal by the part of connecting rod neck 1, such that it is able in the counterweight part on connecting rod neck opposite
The removal of constant weight is equally carried out, so that other parts have been designed with more structure spaces, is entirely started in other words
Machine can realize compact conformation, meet the power requirement of same engine so that engine weight is lighter.For the feelings of twin-tub
Condition, the bent axle part of each cylinder can so be designed, and so the weight and size of bent axle are obtained for reduction on the whole.
On the basis of above-described embodiment, connection neck 1 is provided with least two lightening holes 11, at least two lightening holes 11
Radial section on crankshaft body 10 is symmetrical arranged.
The set location of lightening hole 11 can be adjusted as the case may be, the radial section pair on crankshaft body 10
Claim, can aid in bent axle and keep balance in the axial direction.
On the basis of above-mentioned any one embodiment, connection neck 1 is cylinder, and lightening hole 11 is to be arranged on connection neck
Cylindrical hole on 1, and the bottom of cylindrical hole is circular arc.
Structure on lightening hole 11, because connecting rod neck 1 is cylinder, therefore according to mechanics principle, lightening hole 11 is most
Good design is the cylindrical hole coaxial with connecting rod neck 1, and the bottom of lightening hole 11 is circular arc, and such as Fig. 3, cylindrical hole is that have
Most useful for bent axle mechanical strength, the diameter equidimension as lightening hole 11 is to be calculated to design according to mechanics principle, herein
This structure design innovation is mainly protruded, it is different according to the product of different model specifically to go repeated hole size.
Optionally, above-mentioned connection neck 1 can also be the other structures beyond cylinder, for example class cylinder or round platform
Structure etc., it is known that the structure of connection neck 1 can specifically be set according to the handling characteristics of crankshaft body 10.
On the basis of above-mentioned any one embodiment, counterweight 2 is correspondingly arranged with the position of lightening hole 11.In view of matching somebody with somebody
The mutual cooperation effect of 2 and lightening hole 11 is weighed, the two can be set to off in the substantially symmetrical about its central axis of crankshaft body 10, and in week
It is uniformly arranged upwards.
On the basis of above-mentioned any one embodiment, connection radial section of the neck 1 on crankshaft body is symmetrical arranged,
Counterweight 2 is symmetrical arranged on connection neck 1, or counterweight 2 is symmetrical arranged on the lightening hole 11 on corresponding connection neck 1.
Refer to Fig. 1, being symmetrical arranged on radial section helps to be lifted bent axle balance in the axial direction, counterweight 2 on
The symmetrical cooperation that can aid in lifting counterweight 2 and the weight for being connected neck 1 of connection neck 1, to lift the balance of bent axle.
On the basis of above-mentioned any one embodiment, center line and the axis of crankshaft body 10 of lightening hole 11 have
Angle.
Except the engine crankshaft that above-mentioned each embodiment is provided, the present invention also provides a kind of public including above-described embodiment
The engine of the engine crankshaft opened, the structure of other each several parts of the engine refer to prior art, repeat no more herein.
Except engine and engine crankshaft that above-mentioned each embodiment is provided, include present invention also offers one kind upper
State the motorcycle of engine.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Engine crankshaft provided by the present invention, engine and motorcycle are described in detail above.Herein should
Principle of the invention and implementation method are set forth with specific case, the explanation of above example is only intended to help and manages
The solution method of the present invention and its core concept.It should be pointed out that for those skilled in the art, not departing from
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this hair
In bright scope of the claims.
Claims (8)
1. a kind of engine crankshaft, it is characterised in that including crankshaft body, the crankshaft body upper offset in the crankshaft body
Axis connection neck (1) and the counterweight (2) for controlling the crankshaft body rotary balance, it is described connection neck (1) be provided with
It is easy to the lightening hole (11) of loss of weight.
2. engine crankshaft according to claim 1, it is characterised in that the connection neck (1) is provided with least two and subtracts
Repeated hole (11), the radial section of lightening hole described at least two (11) on the crankshaft body is symmetrical arranged.
3. engine crankshaft according to claim 1, it is characterised in that the connection neck (1) is cylinder, the loss of weight
Hole (11) is the cylindrical hole being arranged on connection neck (1), and the bottom of the cylindrical hole is circular arc.
4. engine crankshaft according to claim 1, it is characterised in that the counterweight (2) and the lightening hole (11)
Position is correspondingly arranged.
5. the engine crankshaft according to Claims 1-4 any one, it is characterised in that the connection neck (1) is on institute
The radial section for stating crankshaft body is symmetrical arranged, and the counterweight (2) is symmetrical arranged on connection neck (1), or the counterweight
(2) it is symmetrical arranged on the lightening hole (11) on corresponding connection neck (1).
6. engine crankshaft according to claim 5, it is characterised in that the center line and the song of the lightening hole (11)
The axis of shaft body has angle.
7. a kind of engine, including engine crankshaft, it is characterised in that the engine crankshaft is that claim 1-6 is any one
Engine crankshaft described in.
8. a kind of motorcycle, including engine, it is characterised in that the engine is the engine described in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197860.2A CN106763121A (en) | 2017-03-29 | 2017-03-29 | A kind of engine crankshaft, engine and motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197860.2A CN106763121A (en) | 2017-03-29 | 2017-03-29 | A kind of engine crankshaft, engine and motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763121A true CN106763121A (en) | 2017-05-31 |
Family
ID=58966558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710197860.2A Pending CN106763121A (en) | 2017-03-29 | 2017-03-29 | A kind of engine crankshaft, engine and motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763121A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651777A (en) * | 2002-05-21 | 2005-08-10 | 曼B与W狄赛尔公司 | Crankshaft for large-sized two-stroke cross-head internal combustion engine |
| CN103291732A (en) * | 2013-04-16 | 2013-09-11 | 中国兵器工业集团第七0研究 | Oilhole chamfer structure of engine crankshaft |
| CN203516426U (en) * | 2013-09-23 | 2014-04-02 | 潍柴动力股份有限公司 | Crankshaft structure |
| CN203604420U (en) * | 2013-07-16 | 2014-05-21 | 哈尔滨东安汽车动力股份有限公司 | Crankshaft for three-cylinder gasoline engine |
| CN204729456U (en) * | 2015-07-10 | 2015-10-28 | 广西玉柴机器股份有限公司 | Engine crankshaft |
-
2017
- 2017-03-29 CN CN201710197860.2A patent/CN106763121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651777A (en) * | 2002-05-21 | 2005-08-10 | 曼B与W狄赛尔公司 | Crankshaft for large-sized two-stroke cross-head internal combustion engine |
| CN103291732A (en) * | 2013-04-16 | 2013-09-11 | 中国兵器工业集团第七0研究 | Oilhole chamfer structure of engine crankshaft |
| CN203604420U (en) * | 2013-07-16 | 2014-05-21 | 哈尔滨东安汽车动力股份有限公司 | Crankshaft for three-cylinder gasoline engine |
| CN203516426U (en) * | 2013-09-23 | 2014-04-02 | 潍柴动力股份有限公司 | Crankshaft structure |
| CN204729456U (en) * | 2015-07-10 | 2015-10-28 | 广西玉柴机器股份有限公司 | Engine crankshaft |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |