CN202673979U - Crankshaft - Google Patents
Crankshaft Download PDFInfo
- Publication number
- CN202673979U CN202673979U CN 201220358599 CN201220358599U CN202673979U CN 202673979 U CN202673979 U CN 202673979U CN 201220358599 CN201220358599 CN 201220358599 CN 201220358599 U CN201220358599 U CN 201220358599U CN 202673979 U CN202673979 U CN 202673979U
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- CN
- China
- Prior art keywords
- crank
- utility
- model
- bent axle
- crankshaft
- 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)
- Forging (AREA)
Abstract
The utility model relates to an improvement of a crankshaft structure. The utility model provides a crankshaft with convenience for machining and low cost. The crankshaft comprises a crank, a main shaft neck and a crank pin, and the structural key is that the crank outer circle is coaxial with the main shaft neck.
Description
Technical field
The utility model relates to the improvement of crankshaft structure.
Background technique
The manufacturing process of existing bent axle is: crankshaft forging is become blank 104 near the bent axle profile, and shape and then is carried out fine finishing as shown in Figure 7 and Figure 8.Main journal 103 bi-side are by milling or plane into the plane, and other working surface of main journal 103 is processed by turning.The manufacture process of crank 102 is: cast first a full circle ring, inner edge surface and outer edge surface with crank 102 is lathed arc surface again, or the inner edge surface of crank 102 is lathed arc surface with tapering, outer edge surface is lathed arc surface, again annulus is cut into the circular arc piece, finally be processed into bent axle as shown in Figure 5 and Figure 6.The Crankshaft Machining process of this kind structure is very complicated, and amount of finish is large, and is also abundant not for raw-material utilization.
In addition, the intermediate section of existing bent axle is provided with a plurality of unnecessary bearing support strong points 101, waste rapidoprint, and complex process.
Summary of the invention
The utility model is exactly for the problems referred to above, and a kind of easy to process, bent axle that cost is low is provided.
For achieving the above object, the utility model adopts following technological scheme, and the utility model comprises crank, main journal and crank pin, and its structure outline crank cylindrical is coaxial with main journal.
As a kind of preferred version, the strong point of the bearing support on the bent axle described in the utility model is two, is arranged on the two ends of bent axle.
As another kind of preferred version, the inner edge surface of crank described in the utility model is the arc surface with tapering, and the outer edge surface of crank is arc surface.
In addition, the cylindrical of each described crank of the utility model is the equal diameter circle.
The utility model beneficial effect: the utility model crank cylindrical is coaxial with main journal; Therefore, be convenient to adopt the cylinder forging blank that equates with the crankshaft crank external diameter to process.Can take full advantage of raw material, adopt turning processing as far as possible so that processing technology simplifies greatly, Effective Raise effect, reduced cost.
The utility model is specially adapted to the less bent axle of throw of eccentric between crank pin and the main shaft.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described further.The utility model protection domain not only is confined to the statement of following content.
Fig. 1 is the utility model structural representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the utility model forging blank figure.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of existing bent axle.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the structural representation of existing forging blank.
Fig. 8 is the left view of Fig. 7.
Among Fig. 1,2,3,4,1 is that crank, 2 is that crank pin, 3 is that inner edge surface, 4 is that main journal, 5 is blank.
Embodiment
As shown in the figure, the utility model comprises crank 1, main journal 4 and crank pin 2, and crank 1 cylindrical is coaxial with main journal 4.
The strong point of the bearing support on the described bent axle is two, is arranged on the two ends of bent axle; Save the unnecessary strong point, save rapidoprint, and technique is simple.
The inner edge surface 3 of described crank 1 is the arc surface with tapering, and the outer edge surface of crank 1 is arc surface.
The cylindrical of each described crank 1 is the equal diameter circle; Be convenient to processing.
The utility model can turn structure for single, hyperbolic turns structure, also can be many crank throws structure.
The utility model can be equipped with split bearing and Split connecting rod and assemble operation when using.
Below in conjunction with description of drawings course of working of the present utility model: the blank 5 of bent axle is forged into the cylindrical body that equates with crankshaft crank 1 external diameter.Main journal 4 is processed by turning; The both sides of crank 1 are processed by turning, and inner edge surface 3 and the outer edge surface of crank 1 is lathed arc surface; Crank pin 2 is processed by turning.
Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technological scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (4)
1. a bent axle comprises crank (1), main journal (4) and crank pin (2), it is characterized in that crank (1) cylindrical is coaxial with main journal (4).
2. described a kind of bent axle according to claim 1 is characterized in that the strong point of the bearing support on the described bent axle is two, is arranged on the two ends of bent axle.
3. described a kind of bent axle according to claim 1 is characterized in that the inner edge surface (3) of described crank (1) is the arc surface with tapering, and the outer edge surface of crank (1) is arc surface.
4. described a kind of bent axle according to claim 1, the cylindrical that it is characterized in that each described crank (1) is the equal diameter circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358599 CN202673979U (en) | 2012-07-24 | 2012-07-24 | Crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358599 CN202673979U (en) | 2012-07-24 | 2012-07-24 | Crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673979U true CN202673979U (en) | 2013-01-16 |
Family
ID=47494886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220358599 Expired - Fee Related CN202673979U (en) | 2012-07-24 | 2012-07-24 | Crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673979U (en) |
-
2012
- 2012-07-24 CN CN 201220358599 patent/CN202673979U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20190724 |