CN203516427U - Crankshaft with counter bore structure - Google Patents
Crankshaft with counter bore structure Download PDFInfo
- Publication number
- CN203516427U CN203516427U CN201320616067.9U CN201320616067U CN203516427U CN 203516427 U CN203516427 U CN 203516427U CN 201320616067 U CN201320616067 U CN 201320616067U CN 203516427 U CN203516427 U CN 203516427U
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- CN
- China
- Prior art keywords
- hole
- diameter
- bolt hole
- crankshaft
- counter bore
- 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 - Lifetime
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- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a crankshaft with a counter bore structure. The crankshaft comprises a plurality of bolt holes which are circumferentially arranged on the end surface of the crankshaft, wherein the upper part of each bolt hole is correspondently provided with a bolt counter bore, the middle part of the end surface of the crankshaft is provided with a stepped hole, a plurality of holes of the stepped hole are in a step shape from the end surface of the crankshaft to the inside, the diameter is gradually reduced, so that the weight of the crankshaft can be reduced; the stepped hole with the maximal diameter on the end surface of the crankshaft is intersected or tangential with a plurality of bolt counter bores, so that the area of a connecting area is reduced, and the reliability in connection is improved; moreover, the torque transferring capacity is improved. The crankshaft is simple in structure and convenient to use.
Description
Technical field
The utility model relates to a kind of bent axle with counter bore structure.
Background technique
Bent axle front end and back end shaft part, generally as flywheel, the adpting flange of belt pulley etc. is used, join domain area of contact is larger, for making connection more reliable, bent axle front end and back end shaft part increases duplicate removal counter bore structure, can reduce the area of contact of bent axle front end and back end and link like this, improve the reliability connecting, increase the effective friction radius in front end and back end simultaneously, improve torque transmission capacity, and can alleviate bent axle weight, counter bore structure of the prior art is simple, counter bore hole diameters is subject to the restriction of diameter of bolt hole and bolthole circle, counter bore hole diameters can not be done greatly, increase torque-transfer capability and duplicate removal effect little.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned defect, and a kind of bent axle with counter bore structure that reduces join domain area, improves connection reliability is provided.
In order to solve the problems of the technologies described above, the utility model comprises that ring is located at a plurality of bolts hole of crankshaft end-face, the top correspondence of each bolt hole is provided with bolt hole, its structural feature is that the middle part of described crankshaft end-face is provided with shoulder hole, a plurality of holes of shoulder hole from crankshaft end-face inwardly stepped and diameter diminish and arrange gradually, the largest hole of described shoulder hole and a plurality of bolt hole are crossing or tangent.
The degree of depth of described shoulder hole largest hole is not more than the degree of depth of bolt hole.
The diameter range of described shoulder hole largest hole is the circumcircle diameter that is less than bolt hole, is greater than the inscribed circle diameter of bolt hole.
The diameter of described bolt hole is not less than the diameter of bolt hole.
The incircle of described bolt hole and circumcircle and shoulder hole are positioned on the same center of circle; The incircle of bolt hole and circumcircle and shoulder hole are positioned on the same center of circle.
The diameter of described shoulder hole the second shoulder hole is less than bolt hole inscribe diameter of a circle.
Adopt the bent axle with counter bore structure of such scheme compared with prior art to have the following advantages: bolt hole is provided with the bolt hole corresponding with it, shoulder hole is positioned at the outermost hole of crankshaft end-face and each bolt hole is crossing or tangent, reduce join domain area, improve the reliability connecting, and having improved torque-transfer capability, the shoulder hole diameter of crankshaft end-face diminishes and arranges gradually, can alleviate bent axle weight, and the utility model is simple in structure, easy to use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 N-N to sectional view.
Embodiment
As depicted in figs. 1 and 2, this bent axle with counter bore structure comprises that ring is located at a plurality of bolts hole 1 of crankshaft end-face, and the top correspondence of each bolt hole 1 is provided with bolt hole 2, and the diameter of bolt hole 2 is not less than the diameter of bolt hole 1, facilitates the installation of bolt.The middle part of crankshaft end-face is provided with shoulder hole 3, a plurality of holes of shoulder hole 3 from crankshaft end-face inwardly stepped and diameter diminish and arrange gradually, in the present embodiment, each hole depth of shoulder hole 3 can be not identical, bent axle surface arranges shoulder hole 3 can alleviate bent axle weight.The incircle of bolt hole 1 and circumcircle and shoulder hole 3 are positioned on the same center of circle; The incircle of bolt hole 2 and circumcircle and shoulder hole 3 are positioned on the same center of circle.The largest hole of crankshaft end-face upper shoulder hole 3 and a plurality of bolt hole 2 intersect or are tangent, and the cross section of the largest hole of shoulder hole 3 circle is crossing or tangent with the cross section circle of bolt hole 2.The diameter range of shoulder hole 3 largest hole is the circumcircle diameter that is less than bolt hole 2, be greater than the inscribed circle diameter of bolt hole 2, while being the diameter maximum of shoulder hole 3 largest hole, bolt hole 2 is circumscribed with maximum diameter shoulder hole 3, the diameter of shoulder hole 3 largest hole hour, bolt hole 2 and maximum diameter shoulder hole 3 inscribes, largest hole and a plurality of bolt hole 2 of realizing shoulder hole 3 are crossing or tangent, reduced join domain area, improved the reliability connecting, and effective friction radius of increase join domain, improve torque-transfer capability.The degree of depth of shoulder hole 3 largest hole is not more than the degree of depth of bolt hole 2, makes shoulder hole 3 not affect the use of bolt hole 1.The diameter of shoulder hole 3 second shoulder holes is less than bolt hole 1 inscribe diameter of a circle, thereby makes the second shoulder hole shoulder hole backward can not destroy bolt hole 1.
The utility model is not limited to above-mentioned embodiment, and those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (6)
1. a bent axle with counter bore structure, comprise that ring is located at a plurality of bolts hole (1) of crankshaft end-face, the top correspondence of each bolt hole (1) is provided with bolt hole (2), the middle part that it is characterized in that described crankshaft end-face is provided with shoulder hole (3), a plurality of holes of shoulder hole (3) from crankshaft end-face inwardly stepped and diameter diminish and arrange gradually, the largest hole of described shoulder hole (3) and a plurality of bolt hole (2) are crossing or tangent.
2. the bent axle with counter bore structure according to claim 1, is characterized in that the degree of depth of described shoulder hole (3) largest hole is not more than the degree of depth of bolt hole (2).
3. the bent axle with counter bore structure according to claim 2, is characterized in that the diameter range of described shoulder hole (3) largest hole, for being less than the circumcircle diameter of bolt hole (2), is greater than the inscribed circle diameter of bolt hole (2).
4. the bent axle with counter bore structure according to claim 3, is characterized in that the diameter of described bolt hole (2) is not less than the diameter of bolt hole (1).
5. according to the bent axle with counter bore structure described in any one in claim 1-4, it is characterized in that the incircle of described bolt hole (1) and circumcircle and shoulder hole (3) are positioned on the same center of circle; The incircle of bolt hole (2) and circumcircle and shoulder hole (3) are positioned on the same center of circle.
6. the bent axle with counter bore structure according to claim 5, is characterized in that the diameter of described shoulder hole (3) second shoulder holes is less than bolt hole (1) inscribe diameter of a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616067.9U CN203516427U (en) | 2013-10-08 | 2013-10-08 | Crankshaft with counter bore structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616067.9U CN203516427U (en) | 2013-10-08 | 2013-10-08 | Crankshaft with counter bore structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516427U true CN203516427U (en) | 2014-04-02 |
Family
ID=50375363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320616067.9U Expired - Lifetime CN203516427U (en) | 2013-10-08 | 2013-10-08 | Crankshaft with counter bore structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516427U (en) |
-
2013
- 2013-10-08 CN CN201320616067.9U patent/CN203516427U/en not_active Expired - Lifetime
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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: 20170406 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: Baldwin (Weifang) Power Co.,Ltd. Address before: 261205 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: WEICHAI POWER Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |