CN201521546U - Novel crankshaft structure - Google Patents
Novel crankshaft structure Download PDFInfo
- Publication number
- CN201521546U CN201521546U CN2009201882723U CN200920188272U CN201521546U CN 201521546 U CN201521546 U CN 201521546U CN 2009201882723 U CN2009201882723 U CN 2009201882723U CN 200920188272 U CN200920188272 U CN 200920188272U CN 201521546 U CN201521546 U CN 201521546U
- Authority
- CN
- China
- Prior art keywords
- journal
- diameter
- crank
- crankshaft
- main journal
- 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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- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A novel crankshaft structure comprises a main journal, a first crankshaft and a second crankshaft, wherein the first crankshaft and the second crankshaft are in sleeve connection onto the main journal. The first crankshaft is connected with the second crankshaft through a connecting rod journal, the diameter of the main journal is smaller than that of the connecting rod journal, the diameter of the main journal is D, the diameter of the connecting rod journal is d, and 0.99>=D/d>0.97. Compared with the prior art, the diameter of the main journal is smaller than that of the connecting rod journal, thereby reducing friction coefficient while guaranteeing safety of the crankshaft structure. In addition, the novel crankshaft structure is simple in structure, reduces cost and increases quality of the crankshafts.
Description
Technical field
The utility model relates to a kind of new type crank structure.
Background technique
Existing crankshaft structure is cost in order to reduce the frictional work loss to reduce partial safety factors, reduces the diameter of main journal and rod journal as far as possible, and purpose is under same rotational speed, reduces the linear velocity of journal surface, so that reduce friction factor.But in order to guarantee the safety of bent axle, the diameter that just must limit main journal and rod journal reduces.
The model utility content
The utility model technical issues that need to address are to provide a kind of new type crank structure, to reach the safety that guarantees crankshaft structure when reducing friction factor.
In order to solve the problems of the technologies described above the technical solution of the utility model be, a kind of new type crank structure, comprise main journal, be socketed in first crank and second crank on the main journal, described first crank is connected by rod journal with second crank, and the diameter of described main journal is less than the diameter of rod journal, and the main journal diameter is D, the rod journal diameter is d, 0.99 〉=D/d＞0.97.
One end of described first crank is connected with second crank, and the other end of first crank is provided with balancer weight.
The utility model compared with prior art, the diameter of described main journal is less than the rod journal diameter, guaranteed the Security of crankshaft structure when reducing friction factor, and is simple in structure, reduced cost, improved the quality of bent axle.
Description of drawings
Below in conjunction with accompanying drawing and description of drawings the utility model is described in further details;
Fig. 1 is the utility model structural representation
In Fig. 1,1, main journal, 2, rod journal, 3, first crank, 4, second crank, 5, balancer weight.
Embodiment
As shown in Figure 1, a kind of new type crank structure, comprise main journal 1, be socketed in first crank 3 and second crank 4 on the main journal 1, described first crank 3 is connected by rod journal 2 with second crank 4, and the diameter of described main journal 1 is less than the diameter of rod journal 2, and main journal 1 diameter is D, rod journal 2 diameters are d, 0.99 〉=D/d＞0.97.
One end of first crank 3 is connected with second crank 4 by rod journal 2, and the other end of first crank 3 is provided with balancer weight 5.Crankshaft structure is a four-in-line formula bent axle, has 3, four second cranks 4 of four first cranks and four balancer weights 5.
Reduce the diameter of main journal 1, the diameter of increase and decrease rod journal 2 makes main journal 1 diameter less than rod journal 2 diameters, and main journal 1 with the diameter ratio of rod journal is: 0.99 〉=D/d＞0.97, so just can when realizing that friction factor descends, not influence the safety coefficient of crankshaft structure.Because the Sliding velocity of rod journal 2 is parameters of a dynamic change, friction factor is changed in a scope, reduce amplitude when identical at the diameter of rod journal 2 and main journal 1, the frictional work of rod journal 2 reduces the reduce amplitude of amplitude less than main journal 1, therefore under the prerequisite that guarantees safety coefficient, by reducing the diameter of main journal 1, can further reduce frictional work.Reduce the diameter of main journal 1, reduce the linear velocity on main journal 1 surface, reduce the friction factor of main journal 1 friction pair, whole crankshaft structure friction factor reduces; Rod journal 2 diameters increase simultaneously, and the diameter of main journal 1 does not influence the safety coefficient of crankshaft structure less than the diameter of rod journal 2.
Claims (2)
1. a new type crank structure comprises main journal (1), be socketed in first crank (3) and second crank (4) on the main journal (1), described first crank (3) is connected by rod journal (2) with second crank (4), it is characterized in that: the diameter of described main journal (1) is less than the diameter of rod journal (2), main journal (1) diameter is D, rod journal straight (2) footpath is d, 0.99 〉=D/d＞0.97.
2. a kind of new type crank structure according to claim 1 is characterized in that: an end of described first crank (3) is connected with second crank (4) by rod journal (2), and the other end of first crank (3) is provided with balancer weight (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201882723U CN201521546U (en) | 2009-10-14 | 2009-10-14 | Novel crankshaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201882723U CN201521546U (en) | 2009-10-14 | 2009-10-14 | Novel crankshaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521546U true CN201521546U (en) | 2010-07-07 |
Family
ID=42507722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201882723U Expired - Fee Related CN201521546U (en) | 2009-10-14 | 2009-10-14 | Novel crankshaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521546U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256140A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Piston type engine crank connecting rod mechanism |
| CN103256118A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Piston type engine offset crankshaft connecting rod mechanism |
| CN103256292A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Four-counterbalance bent axle of gasoline engine |
| CN104439364A (en) * | 2013-09-25 | 2015-03-25 | 北汽福田汽车股份有限公司 | Crankshaft assembly used for inline four-cylinder engine and forming method thereof |
| CN110792684A (en) * | 2019-11-08 | 2020-02-14 | 陕西航天动力高科技股份有限公司 | Three-cylinder three-support crankshaft for diaphragm pump and machining process |
| CN114542579A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | V6 crankshaft structure |
-
2009
- 2009-10-14 CN CN2009201882723U patent/CN201521546U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256140A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Piston type engine crank connecting rod mechanism |
| CN103256118A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Piston type engine offset crankshaft connecting rod mechanism |
| CN103256292A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Four-counterbalance bent axle of gasoline engine |
| CN103256292B (en) * | 2013-04-28 | 2015-09-23 | 重庆小康工业集团股份有限公司 | Four-counterbalance bent axle of gasoline engine |
| CN103256140B (en) * | 2013-04-28 | 2016-03-23 | 重庆小康工业集团股份有限公司 | Reciprocating engine connecting rod |
| CN104439364A (en) * | 2013-09-25 | 2015-03-25 | 北汽福田汽车股份有限公司 | Crankshaft assembly used for inline four-cylinder engine and forming method thereof |
| CN110792684A (en) * | 2019-11-08 | 2020-02-14 | 陕西航天动力高科技股份有限公司 | Three-cylinder three-support crankshaft for diaphragm pump and machining process |
| CN110792684B (en) * | 2019-11-08 | 2023-12-08 | 陕西航天动力高科技股份有限公司 | Three-cylinder three-support crankshaft for diaphragm pump and processing technology |
| CN114542579A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | V6 crankshaft structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20131014 |