CN205780247U - The crank of huge discharge balance axle motorcycle engine - Google Patents
The crank of huge discharge balance axle motorcycle engine Download PDFInfo
- Publication number
- CN205780247U CN205780247U CN201620511137.8U CN201620511137U CN205780247U CN 205780247 U CN205780247 U CN 205780247U CN 201620511137 U CN201620511137 U CN 201620511137U CN 205780247 U CN205780247 U CN 205780247U
- Authority
- CN
- China
- Prior art keywords
- semi
- disc part
- crank
- front surface
- circular portion
- 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
This utility model discloses the crank of a kind of huge discharge balance axle motorcycle engine, axle portion and shank by being wholely set are constituted, shank is a round plate on the whole, and include semi-disc part and crank pin hole, the arc notch that wherein center of semi-disc part upper end is convex under having one, the center of semi-disc part upper end is connected with circular portion lower end；The left and right side of circular portion is arranged with a upper planar section and plane portion, and the upper planar section of respective side is connected with the respective side of semi-disc part by plane portion.This utility model have adjusted traditional crankshaft structure, the substitute is the bent axle using this case, bigger than original structure through calculating the rotary inertia of bent axle in this case；And after this utility model fills on the engine, sound during electromotor work is substantially little than the engine sound equipped with traditional crank.
Description
Technical field
This utility model belongs to motorcycle engine field, particularly relates to a kind of huge discharge balance axle motorcycle engine
Crank.
Background technology
In order to reduce the vibration of electromotor, frequently with balance axle in the huge discharge motorcycle engine of discharge capacity >=150mL
Structure.Through overtesting, use the huge discharge motorcycle engine vibration after balance axle to effectively reduce, but the sound of electromotor is but
It is degrading, during work, occurs in that " " sound, be badly in need of for this solving above-mentioned technical barrier.
Meanwhile, motorcycle engine is a kind of assembly being assembled by a lot of parts, it contain inlet valve, exhaust valve,
The parts such as admission cam and crank.As shown in Figure 1, 2, 3, the material of crank is 45 steel, and by the axle portion 1 being wholely set and shank
2 are constituted, and the bottom of existing shank 2 is semi-disc part 2a, and there is arc convex under the center of this semi-disc part 2a upper end
V notch v 2b, the centre of semi-disc part is connected with circular portion 2c lower end, the both sides of this circular portion 2c lower end and half
The arc-shaped edges transition that integrated disc portions 2a has radius to be 22mm.Further, the top of circular portion 2c has a crank pin hole 2d, circle
The thickness of shape part 2c is less than semi-disc part 2a thickness.
Utility model content
Technical problem to be solved in the utility model is to provide the song of a kind of huge discharge balance axle motorcycle engine
Handle, the " " sound sent during electromotor to be effectively reduced work.
The technical solution of the utility model is as follows: the crank of a kind of huge discharge balance axle motorcycle engine, by integrally setting
The axle portion (1) put and shank (2) are constituted, it is characterised in that: the material of described shank (2) is 40Cr, and this shank is one on the whole
Individual round plate, and include semi-disc part (2a) and crank pin hole (2d), wherein the center of semi-disc part (2a) upper end has
Arc notch (2b) convex under one, the center of this semi-disc part upper end is connected, in rounded portions with circular portion (2c) lower end
(2c) top is divided to have a described crank pin hole (2d)；Behind the rear surface of described circular portion (2c) and semi-disc part (2a)
Flush, the front surface of this semi-disc part is positioned at the front side of circular portion (2c) front surface；Described circular portion (2c)
Left and right side is arranged with a upper planar section (2e) and plane portion (2f), and the upper planar section (2e) of respective side leads to
Cross plane portion (2f) to be connected with the respective side of described semi-disc part (2a)；Described upper, plane portion (2e, 2f) and half
The rear surface of integrated disc portions (2a) is concordant, and the front surface of plane portion (2f) is between upper planar section (2e) and semi-disc portion
Divide between the front surface of (2a), and the front surface of upper planar section (2e) is positioned at the rear side of semi-disc part (2a) front surface, from
And make, the front surface of plane portion (2e, 2f) and semi-disc part (2a) forms a two-stage step surface.
The sound that sends during in order to reduce huge discharge balance axle motorcycle engine work, inventor repeatedly, carefully study
Electromotor produces the links of sound, and these links interact and impact, eventually pass through test and find electromotor
Sound has substantial connection, particularly as being with the rotary inertia of bent axle: the crank rotation inertia of available engine is less, thus leads
Sound when causing electromotor work is bigger.To this end, the inventor of this case have adjusted traditional crankshaft structure, the substitute is and adopt
With the bent axle described in this case, bigger than original structure through calculating the rotary inertia of bent axle in this case.Further, this utility model is contained in
After on electromotor, sound during electromotor work is substantially little than the engine sound equipped with traditional crank, the most well
Overcome the defect of prior art.It addition, after said structure adjusts, if using 45 steel again, then there will be intensity, reliability
The defect inadequate with ruggedness, uses 40Cr to manufacture for this this case.
For the ease of observing, two described plane portion (2f) all having a through observation port (2g), these are two years old
Individual observation port (2g) is about described circular portion (2c) axial symmetry.
As preferably, the thickness of described upper planar section (2e) is 18.45mm, and the thickness of described semi-disc part (2a) is
19.2mm, and the width of described plane portion (2f) is 20mm.
Beneficial effect: this utility model have adjusted traditional crankshaft structure, the substitute is the song used described in this case
Axle is bigger than original structure through calculating the rotary inertia of bent axle in this case；And after this utility model fills on the engine, send out
Sound during motivation work is substantially little than the engine sound equipped with traditional crank, test proves that sound reduces 1.3 points
Shellfish, the most well the customer service defect of prior art.
Accompanying drawing explanation
Fig. 1 is existing cranked axonometric drawing.
Fig. 2 is existing cranked front view.
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Fig. 4 is axonometric drawing of the present utility model.
Fig. 5 is front view of the present utility model.
Fig. 6 is that the B-B of Fig. 5 is to sectional view.
Fig. 7 is that the C-C of Fig. 5 is to sectional view.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
As shown in Fig. 4,5,6 and 7, the crank of a kind of huge discharge balance axle motorcycle engine, by the axle portion 1 being wholely set
Constituting with shank 2, the material of shank 2 is 40Cr.Shank 2 is a round plate on the whole, and includes semi-disc part 2a and song
Shank pin hole 2d, the arc notch 2b that wherein center of semi-disc part 2a upper end is convex under having, this semi-disc part upper end
Center be connected with circular portion 2c lower end, have a crank pin hole 2d on circular portion 2c top；After circular portion 2c
Surface is concordant with semi-disc part 2a rear surface, and the front surface of this semi-disc part is positioned at the front side of circular portion 2c front surface.
The left and right side of circular portion 2c is arranged with a upper planar section 2e and plane portion 2f, and the upper planar portions of respective side
2e is divided to be connected with the respective side of semi-disc part 2a by plane portion 2f.Upper planar section 2e, plane portion 2f and half
The rear surface of integrated disc portions 2a is concordant, and the front surface of plane portion 2f is between upper planar section 2e and semi-disc part 2a
Between front surface, and the front surface of upper planar section 2e is positioned at the rear side of semi-disc part 2a front surface, so that upper planar portions
The front surface dividing 2e, plane portion 2f and semi-disc part 2a forms a two-stage step surface.
It addition, all have a through observation port 2g on two plane portion 2f, the two observation port 2g is about circle
Shape part 2c axial symmetry.The thickness of upper planar section 2e is 18.45mm, and the thickness of semi-disc part 2a is 19.2mm, and in flat
The width of face part 2f is 20mm.According to the size in Fig. 5,6 and 7, the rotary inertia that can calculate this crank is 1.581e+
006gxmm2, and the size marked according to Fig. 2 and 3, can calculate the most cranked rotary inertia is 1.436e+
006gxmm2.But, test proves that, the engine idle sound equipped with traditional crank is 73.2-74.1 decibel, equipped with this
The engine idle sound of crank is 71.9-72.8 decibel, and sound averagely reduces 1.3 decibels, reduces 1.8%.Need spy
Not mentionleting alone bright, sound averagely reduces 1.3 decibels and looks like the least numerical value, but for engine art, wants
The sound 1 decibel reducing electromotor is all very difficult, generally requires and pays a lot of effort and the biggest technological improvement and economy
Cost.
The foregoing is only preferred embodiment of the present utility model, not with this utility model for limiting, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (3)
1. huge discharge balances a crank for axle motorcycle engine, and axle portion (1) and shank (2) by being wholely set are constituted, its
Being characterised by: the material of described shank (2) is 40Cr, this shank is a round plate on the whole, and includes semi-disc part
(2a) with crank pin hole (2d), wherein there is arc notch (2b) convex under the center of semi-disc part (2a) upper end, should
The center of semi-disc part upper end is connected with circular portion (2c) lower end, has a described crank on circular portion (2c) top
Pin-and-hole (2d)；The rear surface of described circular portion (2c) is concordant with semi-disc part (2a) rear surface, before this semi-disc part
Surface is positioned at the front side of circular portion (2c) front surface；The left and right side of described circular portion (2c) is arranged with a upper plane
Partly (2e) and plane portion (2f), and the upper planar section (2e) of respective side is by plane portion (2f) and described semicircle
The respective side of disc portion (2a) is connected；Described upper, plane portion (2e, 2f) is concordant with the rear surface of semi-disc part (2a),
And the front surface of plane portion (2f) is between the front surface of upper planar section (2e) and semi-disc part (2a) and upper flat
The front surface of face part (2e) is positioned at the rear side of semi-disc part (2a) front surface so that upper, plane portion (2e, 2f) and
The front surface of semi-disc part (2a) forms a two-stage step surface.
The crank of huge discharge the most according to claim 1 balance axle motorcycle engine, it is characterised in that: during two are described
All having a through observation port (2g) on planar section (2f), the two observation port (2g) is about described circular portion (2c)
Axial symmetry.
The crank of huge discharge the most according to claim 1 balance axle motorcycle engine, it is characterised in that: described upper plane
Partly the thickness of (2e) is 18.45mm, and the thickness of described semi-disc part (2a) is 19.2mm, and described plane portion (2f)
Width be 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620511137.8U CN205780247U (en) | 2016-05-31 | 2016-05-31 | The crank of huge discharge balance axle motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620511137.8U CN205780247U (en) | 2016-05-31 | 2016-05-31 | The crank of huge discharge balance axle motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780247U true CN205780247U (en) | 2016-12-07 |
Family
ID=58137349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620511137.8U Expired - Fee Related CN205780247U (en) | 2016-05-31 | 2016-05-31 | The crank of huge discharge balance axle motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205780247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864273A (en) * | 2016-05-31 | 2016-08-17 | 中国嘉陵工业股份有限公司（集团） | Crank of motorcycle engine with large discharge capacity and balance shaft |
-
2016
- 2016-05-31 CN CN201620511137.8U patent/CN205780247U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864273A (en) * | 2016-05-31 | 2016-08-17 | 中国嘉陵工业股份有限公司（集团） | Crank of motorcycle engine with large discharge capacity and balance shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180919 Address after: 402760 111 Yongjia Avenue, Bi Quan street, Bishan District, Chongqing. Patentee after: Chongqing Jialing Industrial Co., Ltd. Address before: No. 111 Yongjia Avenue, Bishan County, Chongqing City, Chongqing Patentee before: China Jialing Industry Co., Ltd. (Group) |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |