CN206545646U - A kind of outboard engine crankshaft - Google Patents
A kind of outboard engine crankshaft Download PDFInfo
- Publication number
- CN206545646U CN206545646U CN201720076057.9U CN201720076057U CN206545646U CN 206545646 U CN206545646 U CN 206545646U CN 201720076057 U CN201720076057 U CN 201720076057U CN 206545646 U CN206545646 U CN 206545646U
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- CN
- China
- Prior art keywords
- crank arm
- connecting rod
- oilhole
- engine crankshaft
- balance weight
- 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 provides a kind of outboard engine crankshaft, belongs to field of mechanical technique.It solves the problem of existing bent axle stability is poor.This outboard engine crankshaft includes left crank arm, right crank arm, left connecting rod neck, right connecting rod neck and balance weight, balance weight is located between left crank arm and right crank arm, left crank arm is connected by left connecting rod neck with balance weight, right crank arm is connected by right connecting rod neck with balance weight, one end of bent axle is output end, the other end is input, the inner of output end is connected with left crank arm, the inner of input is connected with right crank arm, the outer end of output end has blind hole, internal spline in a ring is provided with the circumferential madial wall of blind hole, internal spline and bent axle are integral structures, the both sides of balance weight are respectively provided with lightening hole, two lightening holes are symmetrical arranged.This outboard engine crankshaft has the advantages that stability is good and noise is low.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of outboard engine crankshaft.
Background technology
Bent axle is one of important moving component of engine, and its material is made up of carbon structural steels or spheroidal graphite cast-iron,
The rotation of bent axle is the power source of engine, is also the driving source of whole mechanical system.
Existing bent axle includes left crank arm, right crank arm, left connecting rod neck, right connecting rod neck and balance weight, and balance weight is located at
Between left crank arm and right crank arm, left crank arm is connected by left connecting rod neck with balance weight, and right crank arm passes through right connecting rod neck
It is connected with balance weight, one end of bent axle is output end, and the other end is input, and the inner of output end is connected with left crank arm, defeated
Enter the inner of end with right crank arm to be connected, the outer end of output end has blind hole, is pressed into a ring in blind hole by hydraulic press
Spline, make spline and crank output end tight fit be connected.
Bent axle smooth rotation is made by balance weight, balance is good, but existing balance weight is due to heavier-weight, heavier
Balance weight needs to consume more energy during rotation, can increase the noise of engine；Spline is by hydraulic press pressure
Enter into blind hole what is be fixedly connected with bent axle, the concentricity of spline and bent axle can not ensure, during work, because spline is different with bent axle
The heart can cause abnormal abrasion to spline, and because spline is influenceed the risk that there is loose or dislocation by expanding with heat and contract with cold, once
Spline loosens or come off, and engine can be caused to break down.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, it is proposed that a kind of outboard engine crankshaft,
The technical problem of solution is how to improve the stability and reduction noise of bent axle.
The purpose of this utility model can be realized by following technical proposal：A kind of outboard engine crankshaft, including left crank arm,
Right crank arm, left connecting rod neck, right connecting rod neck and balance weight, the balance weight are located between left crank arm and right crank arm, described
Left crank arm is connected by left connecting rod neck with balance weight, and the right crank arm is connected by right connecting rod neck with balance weight, the song
One end of axle be output end, the other end is input, and the inner of the output end is connected with left crank arm, the input it is interior
End is connected with right crank arm, and the outer end of the output end has blind hole, it is characterised in that on the circumferential madial wall of the blind hole
Internal spline in a ring is provided with, the internal spline and bent axle are integral structures, and the both sides of the balance weight are respectively provided with lightening hole,
Two lightening holes are symmetrical arranged.
Left crank arm, right crank arm, left connecting rod neck, right connecting rod neck and balance weight are integral structures, and internal spline is by inserting
Tooth machine is directly inserted into type, and internal spline is integral structure with bent axle, and firmness is high, internal spline be not present loosen, asking of coming off
Topic, it is ensured that the concentricity of internal spline and bent axle, internal spline is not in the situation of inordinate wear during work, improves bent
The stability of axle transmission, improves service life.The setting of lightening hole mitigates the weight of balance weight, reduces the overall weight of bent axle,
So as to reduce the vibration of engine, the noise that engine is produced when reduction runs at high speed.
In a kind of above-mentioned outboard engine crankshaft, there is gap, outside between the inner of the internal spline and the bottom of blind hole
End at the opening of blind hole with having one end spacing.This kind of structure, makes internal spline easy to process, and internal spline two ends not with song
Axle is connected, it is possible to reduce stress concentration, internal spline is hardly damaged, and improves the stability of transmission of crankshaft.
In a kind of above-mentioned outboard engine crankshaft, the corner of the lightening hole is curved.Rounding processing, does not hurt hands, if
Meter is reasonable.
In a kind of above-mentioned outboard engine crankshaft, the lightening hole is located at the center of balance weight both sides.Rationally using empty
Between, lightening hole will not destruction of balance block balance, lightening hole improve bent axle stability.
In a kind of above-mentioned outboard engine crankshaft, bottom of the balance weight away from left connecting rod neck and right connecting rod neck has arc
Shape lightening grooves.The setting of arc lightening grooves reduces the overall weight of bent axle, so as to reduce the vibration of engine, reduction is transported at a high speed
The noise that engine is produced when turning.
In a kind of above-mentioned outboard engine crankshaft, the balance weight has recessed close to the top of left connecting rod neck and right connecting rod neck
The loss of weight recess entered.The setting of loss of weight recess reduces the overall weight of bent axle, so as to reduce the vibration of engine, reduction is at a high speed
The noise that engine is produced during operating.
In a kind of above-mentioned outboard engine crankshaft, there is left oilhole and right oilhole, the left side in the bent axle
Oilhole and right oilhole are obliquely installed, and the left oilhole runs through left crank arm, the one of the left oilhole
End is located in output end, and the other end is located in left connecting rod neck, and the right oilhole runs through right crank arm, the right oilhole
One end be located at input in, the other end be located at right connecting rod neck in.Left oilhole and right oilhole are the through hole run through,
The setting of left oilhole and right oilhole can improve lubricant effect of the lubricating oil to bent axle, make bent axle in the process of work
In it is not easy to wear, improve service life.
In a kind of above-mentioned outboard engine crankshaft, the left oilhole and right oilhole are symmetrical arranged.Rationally utilize
Space, and the scope for lubricating left oilhole and right oilhole is big.
In a kind of above-mentioned outboard engine crankshaft, the surface of the bent axle forms protective layer entirely through tufftride processing.
The surface of bent axle and the case hardness of internal spline are high, not easy to wear after crankshaft surface reinforcing, improve the service life of bent axle.
Compared with prior art, the outboard engine crankshaft that the utility model is provided has advantages below：
1st, the internal spline of this outboard engine crankshaft is directly inserted into type by gear shapping machine, and internal spline and bent axle are integral structures,
Firmness is high, and the problem of loosening, come off is not present in internal spline, it is ensured that the concentricity of internal spline and bent axle, and internal spline is in work
During will not inordinate wear, improve bent axle transmission stability, improve service life.
2nd, this outboard engine crankshaft reduces the entirety weight of bent axle by setting lightening hole, arc lightening grooves and loss of weight recess
Amount, so that the vibration of engine is reduced, the noise that engine is produced when reduction runs at high speed.
Brief description of the drawings
Fig. 1 is the overall structure diagram of this outboard engine crankshaft.
Fig. 2 is the overall structure front view of this outboard engine crankshaft.
Fig. 3 is this outboard engine crankshaft Fig. 2 A-A to sectional view.
Fig. 4 is the sectional view of this outboard engine crankshaft output end.
In figure, 1, left crank arm；2nd, right crank arm；3rd, left connecting rod neck；4th, right connecting rod neck；5th, balance weight；6th, output end；7、
Input；8th, internal spline；9th, lightening hole；10th, arc lightening grooves；11st, loss of weight recess；12nd, left oilhole；13rd, right lubricating oil
Hole.
Embodiment
The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model
Description, but the utility model is not limited to these embodiments.
As shown in figure 1, this outboard engine crankshaft includes left crank arm 1, right crank arm 2, left connecting rod neck 3, the peace of right connecting rod neck 4
Weigh block 5, and balance weight 5 is located between left crank arm 1 and right crank arm 2, and left crank arm 1 passes through left connecting rod neck 3 and the phase of balance weight 5
Even, right crank arm 2 is connected by right connecting rod neck 4 with balance weight 5, and one end of bent axle is output end 6, and the other end is input 7, defeated
Go out the inner of end 6 with left crank arm 1 to be connected, the inner of input 7 is connected with right crank arm 2, and the surface of bent axle is entirely through soft
Nitrogen treatment formation protective layer.The outer end of output end 6 has the interior flower being provided with blind hole, the circumferential madial wall of blind hole in a ring
Key 8, internal spline 8 and bent axle are integral structures, as shown in figure 4, between having between the inner of internal spline 8 and the bottom of blind hole
It is intersegmental away from internal spline 8 is coaxially set with bent axle with one at the opening of gap, outer end and blind hole.
As shown in Fig. 2 having left oilhole 12 and right oilhole 13, left oilhole 12 and right lubricating oil in bent axle
Hole 13 is symmetrical arranged, and left oilhole 12 and right oilhole 13 are obliquely installed, and left oilhole 12 runs through left crank arm 1,
One end of left oilhole 12 is located in output end 6, and the other end is located in left connecting rod neck 3, and right oilhole 13 runs through right crank
Arm 2, one end of right oilhole 13 is located in input 7, and the other end is located in right connecting rod neck 4.
As shown in figure 3, the both sides of balance weight 5 are respectively provided with lightening hole 9, it is in arc that the corner of lightening hole 9 is handled by rounding
Shape, two lightening holes 9 are located at the center of the both sides of balance weight 5 and two lightening holes 9 are symmetrical arranged.Balance weight 5 is away from left connecting rod
The bottom of neck 3 and right connecting rod neck 4 has arc lightening grooves 10, and balance weight 5 has close to the top of left connecting rod neck 3 and right connecting rod neck 4
There is recessed loss of weight recess 11.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although more used herein left crank arm 1, right crank arm 2, left connecting rod neck 3, right connecting rod neck 4, balance weight 5,
Output end 6, input 7, internal spline 8, lightening hole 9, arc lightening grooves 10, loss of weight recess 11, left oilhole 12, right lubricating oil
The grade term of hole 13, but it is not precluded from the possibility using other terms.It is used for the purpose of more easily describing using these terms
With explanation essence of the present utility model；Being construed as any additional limitation is disagreed with the utility model spirit
The back of the body.
Claims (9)
1. a kind of outboard engine crankshaft, including left crank arm (1), right crank arm (2), left connecting rod neck (3), right connecting rod neck (4) peace
Weigh block (5), and the balance weight (5) is located between left crank arm (1) and right crank arm (2), and the left crank arm (1) passes through left company
Bar neck (3) is connected with balance weight (5), and the right crank arm (2) is connected by right connecting rod neck (4) with balance weight (5), the bent axle
One end be output end (6), the other end be input (7), the inner of the output end (6) is connected with left crank arm (1), described
The inner of input (7) is connected with right crank arm (2), and the outer end of the output end (6) has blind hole, it is characterised in that institute
The internal spline (8) being provided with the circumferential madial wall of blind hole in a ring is stated, the internal spline (8) and bent axle are integral structures, institute
The both sides for stating balance weight (5) are respectively provided with lightening hole (9), and two lightening holes (9) are symmetrical arranged.
2. a kind of outboard engine crankshaft according to claim 1, it is characterised in that the inner of the internal spline (8) and blind hole
Bottom between have at gap, the opening of outer end and blind hole have one it is intersegmental away from.
3. a kind of outboard engine crankshaft according to claim 1, it is characterised in that the corner of the lightening hole (9) is in arc
Shape.
4. a kind of outboard engine crankshaft according to claim 1, it is characterised in that the lightening hole (9) is located at balance weight (5)
The center of both sides.
5. a kind of outboard engine crankshaft according to claim 1 or 2 or 3 or 4, it is characterised in that the balance weight (5) is remote
The bottom of left connecting rod neck (3) and right connecting rod neck (4) has arc lightening grooves (10).
6. a kind of outboard engine crankshaft according to claim 1 or 2 or 3 or 4, it is characterised in that the balance weight (5) is close
The top of left connecting rod neck (3) and right connecting rod neck (4) has recessed loss of weight recess (11).
7. a kind of outboard engine crankshaft according to claim 1 or 2 or 3 or 4, it is characterised in that there is a left side in the bent axle
Oilhole (12) and right oilhole (13), the left oilhole (12) and right oilhole (13) are obliquely installed, institute
Left oilhole (12) is stated through left crank arm (1), one end of the left oilhole (12) is located in output end (6), another
End is located in left connecting rod neck (3), and the right oilhole (13) runs through right crank arm (2), the one of the right oilhole (13)
End is located in input (7), and the other end is located in right connecting rod neck (4).
8. a kind of outboard engine crankshaft according to claim 7, it is characterised in that the left oilhole (12) and right lubrication
Oilhole (13) is symmetrical arranged.
9. a kind of outboard engine crankshaft according to claim 1 or 2 or 3 or 4, it is characterised in that the surface of the bent axle is whole
Body forms protective layer by tufftride processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076057.9U CN206545646U (en) | 2017-01-21 | 2017-01-21 | A kind of outboard engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076057.9U CN206545646U (en) | 2017-01-21 | 2017-01-21 | A kind of outboard engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545646U true CN206545646U (en) | 2017-10-10 |
Family
ID=59993690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720076057.9U Expired - Fee Related CN206545646U (en) | 2017-01-21 | 2017-01-21 | A kind of outboard engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206545646U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548082A (en) * | 2018-07-04 | 2018-09-18 | 蚌埠艾普压缩机制造有限公司 | A kind of crank lubricating device for hydrogenation stations high pressure hydrogen compressor |
| CN109630535A (en) * | 2019-01-24 | 2019-04-16 | 力帆实业(集团)股份有限公司 | A kind of V cylinder integral one-piece crankshaft assembly |
| CN110617268A (en) * | 2019-09-29 | 2019-12-27 | 重庆长安汽车股份有限公司 | Engine crankshaft and vehicle |
| CN115013113A (en) * | 2022-06-07 | 2022-09-06 | 浙江联星机械股份有限公司 | Crankshaft for outboard machine |
-
2017
- 2017-01-21 CN CN201720076057.9U patent/CN206545646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548082A (en) * | 2018-07-04 | 2018-09-18 | 蚌埠艾普压缩机制造有限公司 | A kind of crank lubricating device for hydrogenation stations high pressure hydrogen compressor |
| CN109630535A (en) * | 2019-01-24 | 2019-04-16 | 力帆实业(集团)股份有限公司 | A kind of V cylinder integral one-piece crankshaft assembly |
| CN110617268A (en) * | 2019-09-29 | 2019-12-27 | 重庆长安汽车股份有限公司 | Engine crankshaft and vehicle |
| CN115013113A (en) * | 2022-06-07 | 2022-09-06 | 浙江联星机械股份有限公司 | Crankshaft for outboard machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317608 Zhejiang Province, Yuhuan City Industrial Zone, Lu Pu Zhen Xuan Kong Patentee after: Taizhou City Central Asia auto parts Limited by Share Ltd Address before: Taizhou City, Zhejiang Province, 317600 Yuhuan County Lu Pu Zhen Xuan Kong Industrial Zone Patentee before: Taizhou Zhongya Beijing Great Automotive Components Company Limited |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171010 Termination date: 20200121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |