CN102943841A - Cross throw crank shaft system of engine - Google Patents
Cross throw crank shaft system of engine Download PDFInfo
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- CN102943841A CN102943841A CN2012103865254A CN201210386525A CN102943841A CN 102943841 A CN102943841 A CN 102943841A CN 2012103865254 A CN2012103865254 A CN 2012103865254A CN 201210386525 A CN201210386525 A CN 201210386525A CN 102943841 A CN102943841 A CN 102943841A
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- cross
- crank
- crank shaft
- belt pulley
- flywheel
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Abstract
The invention discloses a cross throw crank shaft system of an engine. A cross throw crank shaft (2) comprises four cranks, wherein the included angles between the first crank and the second, the third and the fourth cranks are 90 degrees, 270 degrees and 180 degrees respectively; a king journal and a crank arm as well as a crank pin and the crank arm of the cross throw crank shaft (2) adopt under cutting round corners for transition; the surface of the king journal and that of the crank pin are communicated through an inclined oil passage, so that lubrication of the crank pin can be realized; a belt pulley (1) and a flywheel (5) are arranged on the cross throw crank shaft (2); a crank shaft counterweight (3) is arranged on the cross throw crank shaft (2) or integrally manufactured with the cross throw crank shaft (2); a belt pulley counterweight (6), lightening holes on the belt pulley counterweight (6), a flywheel counterweight (4), lightening holes on the flywheel counterweight (4), and the crank shaft counterweight constitute a balanced system, so that the whole crank shaft system can be balanced fully; and an included angle is formed between the centroid of the crank shaft counterweight (3) and the crank arm of the cross throw crank shaft (2). The cross throw crank shaft system has the advantages that the mass of the whole crank shaft system can be reduced, the space of a crank case can be saved, full balance can be realized, and the vibration level of the whole engine can be reduced helpfully.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to a kind of motor cross and turn crankshaft system.
Background technique
When 90 ° of 8 Cylinder engines of a kind of Novel V-shaped of research and development, functional for guaranteeing its vibration noise, crankshaft system need to reach full balance; Simultaneously owing to will control quality and the volume of complete machine, the limited space of crankcase inside, the arrangement space anxiety of crankshaft system.
The crank throw that this type of type bent axle is commonly used is being arranged symmetrically with of plane, and the shortcoming of this layout is to have larger secondary unbalanced force, must establish trunnion shaft and just can accomplish complete equilibrium.If trunnion shaft can increase volume and the quality of complete machine, do not meet the designing requirement of complete machine.
Asymmetrical cross turns layout cancels each other the secondary unbalanced force, only has single order rotatory inertia moment and the first order reciprocating inertia force square uneven, can realize full balance by the reasonable disposition balancer weight.
Summary of the invention
In order to solve the limited contradictory problems in the full balance of crankshaft system and crankcase inner space, purpose provides a kind of motor cross and turns crankshaft system, realizes full balance, and compact structure just in the present invention, saves the crankcase space.
Technological scheme of the present invention:
A kind of motor cross turns crankshaft system, comprise that belt pulley, cross turn bent axle, crankshaft balance weight, flywheel counter weight, flywheel, belt pulley counterweight, belt pulley, flywheel are located at cross and turn on the bent axle, crankshaft balance weight be located on the bent axle or with the whole crank shaft manufacturing, cross turns crankshaft two end and is connected with flywheel with belt pulley respectively; The belt pulley counterweight is located on the belt pulley or with belt pulley is whole and makes; Flywheel counter weight is located on the flywheel or with flywheel is whole and makes; Lightening hole on lightening hole on belt pulley counterweight, the belt pulley, flywheel counter weight, the flywheel and crankshaft balance weight Compositional balance system make whole crankshaft system realize full balance.
Described cross turns bent axle and comprises four crank throws, second and third, the angle of four crank throws and the first crank throw is respectively 90 °, 270 ° and 180 °; Be weight reduction, arrange balancer weight at the 1st, 2,3 and the 6th, 7,8 crankwebs, wherein the balancer weight and the 6th, 7 on the 1st, 2,3 crankwebs, the balancer weight on 8 crankwebs are about the 3rd main journal center origin symmetry.
Described cross turns the main journal of bent axle and crankweb and crank pin and crankweb and adopts heavy cyclotomy angle transition, and the main journal surface adopts oblique oil duct to connect with crank pin surface, realizes the lubricated of crank pin.
The crankweb that the barycenter of described crankshaft balance weight and cross turn bent axle has angle, and the angle of balancer weight barycenter is not identical on the 1st, 2,3 crankwebs.
Beneficial effect of the present invention:
1. cross turns bent axle only moment unbalance, adopts and establishes balancer weight and lightening hole at belt pulley and flywheel, and the turning radius and the arm of force are all larger, can effectively reduce the quality of balancer weight, and complete machine loss of weight and volume control are of great significance;
2. the angle of the balancer weight of appropriate design and crankweb can be saved the crankcase inner space when guaranteeing counterbalance effect, alleviates overall mass;
3. adopt the mechanism of installing counterweight and lightening hole on crankshaft balance weight and belt pulley and the flywheel additional, not only can make cross turn crankshaft system and realize full balance, and can save the crankcase space;
4. adopt heavy cyclotomy angle, convenient fatigue limit by rolling and reinforcing technology Effective Raise bent axle;
5. adopt oblique oil duct, processing is simple, for the V-type machine, two oilholes is arranged on each axle journal, can guarantee not eccentric wear of axle journal;
6. make whole crankshaft system realize full balance, and compact structure, the crankcase space saved.
Description of drawings
Fig. 1 is perspective view of the present invention.
Each mark of accompanying drawing represents respectively: the 1-belt pulley; The 2-cross turns bent axle; The 3-crankshaft balance weight; The 4-flywheel counter weight; The 5-flywheel; 6-belt pulley counterweight.
Embodiment
A kind of motor cross turns crankshaft system, comprise that belt pulley, cross turn bent axle, crankshaft balance weight, flywheel counter weight, flywheel, belt pulley counterweight, belt pulley, flywheel are located at cross and turn on the bent axle, crankshaft balance weight be located on the bent axle or with the whole crank shaft manufacturing, cross turns crankshaft two end and is connected with flywheel with belt pulley respectively; The belt pulley counterweight is located on the belt pulley or with belt pulley is whole and makes; Flywheel counter weight is located on the flywheel or with flywheel is whole and makes; Lightening hole on lightening hole on belt pulley counterweight, the belt pulley, flywheel counter weight, the flywheel and crankshaft balance weight Compositional balance system make whole crankshaft system realize full balance.
Described cross turns bent axle and comprises four crank throws, second and third, the angle of four crank throws and the first crank throw is respectively 90 °, 270 ° and 180 °; Be weight reduction, arrange balancer weight at the 1st, 2,3 and the 6th, 7,8 crankwebs, wherein the balancer weight and the 6th, 7 on the 1st, 2,3 crankwebs, the balancer weight on 8 crankwebs are about the 3rd main journal center origin symmetry.
Described cross turns the main journal of bent axle and crankweb and crank pin and crankweb and adopts heavy cyclotomy angle transition, and the main journal surface adopts oblique oil duct to connect with crank pin surface, realizes the lubricated of crank pin.
The crankweb that the barycenter of described crankshaft balance weight and cross turn bent axle has angle, and the angle of balancer weight barycenter is not identical on the 1st, 2,3 crankwebs.
Claims (4)
1. a motor cross turns crankshaft system, comprise that belt pulley (1), cross turn bent axle (2), crankshaft balance weight (3), flywheel counter weight (4), flywheel (5), belt pulley counterweight (6), it is characterized in that, belt pulley (1) and flywheel (5) are located at cross and turn on the bent axle (2), crankshaft balance weight (3) is located at cross and turns on the bent axle (2), and cross turns bent axle (2) two ends is connected 5 with belt pulley (1) with flywheel respectively) be connected; Belt pulley counterweight (6) is located on the belt pulley (1); Flywheel counter weight (4) is located on the flywheel (5).
2. motor cross as claimed in claim 1 turns crankshaft system, it is characterized in that, described cross turns bent axle (2) and comprises four crank throws, second and third, the angle of four crank throws and the first crank throw is respectively 90 °, 270 ° and 180 °; Be weight reduction, arrange balancer weight at the 1st, 2,3 and the 6th, 7,8 crankwebs, wherein the balancer weight and the 6th, 7 on the 1st, 2,3 crankwebs, the balancer weight on 8 crankwebs are about the 3rd main journal center origin symmetry.
3. motor cross as claimed in claim 1 turns crankshaft system, it is characterized in that, described cross turns main journal and crankweb and crank pin and the heavy cyclotomy angle transition of crankweb employing of bent axle (2), and the main journal surface adopts oblique oil duct to connect with crank pin surface.
4. motor cross as claimed in claim 1 turns crankshaft system, it is characterized in that, the crankweb that the barycenter of described crankshaft balance weight (3) and cross turn bent axle (2) has angle, and the angle of balancer weight barycenter is not identical on the 1st, 2,3 crankwebs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103865254A CN102943841A (en) | 2012-10-13 | 2012-10-13 | Cross throw crank shaft system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103865254A CN102943841A (en) | 2012-10-13 | 2012-10-13 | Cross throw crank shaft system of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943841A true CN102943841A (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103865254A Pending CN102943841A (en) | 2012-10-13 | 2012-10-13 | Cross throw crank shaft system of engine |
Country Status (1)
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| CN (1) | CN102943841A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121324A (en) * | 2014-08-12 | 2014-10-29 | 广西玉柴机器股份有限公司 | Balance weight device for crank shaft dynamic balance test |
| CN104440433A (en) * | 2014-12-01 | 2015-03-25 | 南车资阳机车有限公司 | Unbalanced crankshaft balanced grinding method |
| CN106015305A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of V-shaped six-cylinder engine |
| CN106015303A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of in-line three-cylinder engine |
| CN106089971A (en) * | 2016-08-04 | 2016-11-09 | 广西玉柴机器股份有限公司 | The crankshaft structure of v type eight cylinder engine |
| CN106224094A (en) * | 2016-08-31 | 2016-12-14 | 河北华北柴油机有限责任公司 | 12 cylinder water-cooled Diesel engines |
| CN106246708A (en) * | 2016-08-04 | 2016-12-21 | 广西玉柴机器股份有限公司 | The crankshaft structure of v type eight cylinder engine |
| CN107237861A (en) * | 2017-05-17 | 2017-10-10 | 北汽福田汽车股份有限公司 | A kind of vehicle, engine and its crankshaft counterbalance structure |
| CN108708934A (en) * | 2018-08-01 | 2018-10-26 | 广西玉柴机器股份有限公司 | Two cylinder arbor system balance shock system |
| CN109555816A (en) * | 2018-12-11 | 2019-04-02 | 奇瑞汽车股份有限公司 | A method of improving three-cylinder engine balance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632340A (en) * | 1949-04-07 | 1953-03-24 | Gen Motors Corp | V-6 engine |
| JPH09212554A (en) * | 1996-01-31 | 1997-08-15 | Canon Inc | Charging device, communication equipment and communication system |
| CN101210600A (en) * | 2006-12-31 | 2008-07-02 | 奇瑞汽车有限公司 | Crankshaft equilibrium mechanism |
| CN101660586A (en) * | 2008-08-25 | 2010-03-03 | 现代自动车株式会社 | Balance weight system of crankshaft |
| CN202338560U (en) * | 2011-09-23 | 2012-07-18 | 广州汽车集团股份有限公司 | Automobile engine crankshaft |
-
2012
- 2012-10-13 CN CN2012103865254A patent/CN102943841A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632340A (en) * | 1949-04-07 | 1953-03-24 | Gen Motors Corp | V-6 engine |
| JPH09212554A (en) * | 1996-01-31 | 1997-08-15 | Canon Inc | Charging device, communication equipment and communication system |
| CN101210600A (en) * | 2006-12-31 | 2008-07-02 | 奇瑞汽车有限公司 | Crankshaft equilibrium mechanism |
| CN101660586A (en) * | 2008-08-25 | 2010-03-03 | 现代自动车株式会社 | Balance weight system of crankshaft |
| CN202338560U (en) * | 2011-09-23 | 2012-07-18 | 广州汽车集团股份有限公司 | Automobile engine crankshaft |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121324A (en) * | 2014-08-12 | 2014-10-29 | 广西玉柴机器股份有限公司 | Balance weight device for crank shaft dynamic balance test |
| CN104440433A (en) * | 2014-12-01 | 2015-03-25 | 南车资阳机车有限公司 | Unbalanced crankshaft balanced grinding method |
| CN104440433B (en) * | 2014-12-01 | 2017-02-22 | 中车资阳机车有限公司 | Unbalanced crankshaft balanced grinding method |
| CN106015305A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of V-shaped six-cylinder engine |
| CN106015303A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of in-line three-cylinder engine |
| CN106089971A (en) * | 2016-08-04 | 2016-11-09 | 广西玉柴机器股份有限公司 | The crankshaft structure of v type eight cylinder engine |
| CN106246708A (en) * | 2016-08-04 | 2016-12-21 | 广西玉柴机器股份有限公司 | The crankshaft structure of v type eight cylinder engine |
| CN106224094A (en) * | 2016-08-31 | 2016-12-14 | 河北华北柴油机有限责任公司 | 12 cylinder water-cooled Diesel engines |
| CN107237861A (en) * | 2017-05-17 | 2017-10-10 | 北汽福田汽车股份有限公司 | A kind of vehicle, engine and its crankshaft counterbalance structure |
| CN108708934A (en) * | 2018-08-01 | 2018-10-26 | 广西玉柴机器股份有限公司 | Two cylinder arbor system balance shock system |
| CN109555816A (en) * | 2018-12-11 | 2019-04-02 | 奇瑞汽车股份有限公司 | A method of improving three-cylinder engine balance |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |