CN202674162U - Automobile engine vibration damping crankshaft - Google Patents
Automobile engine vibration damping crankshaft Download PDFInfo
- Publication number
- CN202674162U CN202674162U CN 201220193055 CN201220193055U CN202674162U CN 202674162 U CN202674162 U CN 202674162U CN 201220193055 CN201220193055 CN 201220193055 CN 201220193055 U CN201220193055 U CN 201220193055U CN 202674162 U CN202674162 U CN 202674162U
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- China
- Prior art keywords
- main shaft
- counterweight block
- vibration damping
- crank
- engine vibration
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Abstract
The utility model provides an automobile engine vibration damping crankshaft and belongs to the automobile technical field. The automobile engine vibration damping crankshaft solves the technical problem that a crankshaft of an existing automobile engine is large in tortional vibration, and comprises a main shaft, a plurality of toggles and balance weights which are arranged on the main shaft. The toggles are arranged on the main shaft. The balance weights arranged on the toggles, and the toggles are arranged on two sides of the main shaft along a straight line. Each balance weight is in a split structure. A first balance weight and a second balance weight are arranged on each balance weight along the direction perpendicular to the main shaft. An elastic layer is arranged between each first weight balance and each second weight balance. The automobile engine vibration damping crankshaft has the advantages of being little in tortional vibration and simple in structure and the like.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of motor car engine vibration damping bent axle.
Background technique
Along with advancing and the fast development of automotive industry of society, people's living standard constantly improves, and automobile has become one of a kind of important traffic tool that people ride instead of walk.
Internal-combustion engine in the automobile is a kind of dynamic power machine, and it is to burn at machine intimate by fuel, and its heat energy of emitting directly is converted to the heat engine of power.
In the using process of internal-combustion engine, it is found that, change very inhomogeneously when internal-combustion engine reaches a certain rotating speed luck, be accompanied by machinery and knock and shake, performance is variation also, and this phenomenon mainly causes by the crankshaft torsion vibration.Under the effect of singly turning torque that changes along with the cycle, can produce sizable periodicity relative torsion between each crank throw, number of cylinders is more, and bent axle is longer, and this phenomenon is just more serious; When the torque that the cycle changes on being applied to bent axle conforms to the vibration frequency of bent axle own, resonance phenomenon will occur, the amplitude of the torsional deflection of bent axle will be well beyond normal value when resonance occured, light then noise that generation is very large, wearing and tearing are increased severely, heavy then make crankshaft breakdown.
Present motor mainly is that torsional balancer is integrated on the belt of crankshaft front end, and to subdue crankshaft torsional vibrations, effectiveness in vibration suppression is limited.
Summary of the invention
The purpose of this utility model is for existing deficiency, and a kind of preferably motor car engine vibration damping bent axle of the crankshaft torsional vibrations of absorption energy effect that has is provided.
The purpose of this utility model can realize by following technical proposal: a kind of motor car engine vibration damping bent axle, comprise main shaft, be arranged on some crank throws and balancer weight on the main shaft, described crank throw is arranged on the main shaft, described balancer weight be arranged on the crank throw and and crank throw be arranged on along a straight line the both sides of main shaft, it is characterized in that, described each balancer weight is Split type structure, each balancer weight is provided with posterior limiting along perpendicular to major axes orientation counterweight block one and counterweight block two being set between described counterweight block two and the counterweight block one.
Each balancer weight of this motor car engine vibration damping bent axle mainly is comprised of counterweight block one and counterweight block two, between counterweight block two and counterweight block one, be provided with posterior limiting, this counterweight block two and counterweight block one are connected mutually by elasitic layer, when crankshaft vibration, but this elasitic layer absorbing vibrational energy is subdued torsional oscillation.
In above-mentioned motor car engine vibration damping bent axle, described elasitic layer is a vibration isolation rubber layer, and this counterweight block two is fixed on the counterweight block one by the vibration isolation rubber layer.This vibration isolation rubber layer gel is between counterweight block one and counterweight block two, when crankshaft vibration, the relative angle vibration is arranged between counterweight block one and the counterweight block two, the vibration isolation rubber layer produces forward and reverse torsional deflection that alternately changes, vibration isolation rubber layer distortion and the molecular friction of the rubber inside that produces, consume the crankshaft torsion vibrational energy, subdued torsional oscillation.
In above-mentioned motor car engine vibration damping bent axle, described main shaft is provided with the even number crank throw.Be arranged to the even number crank throw, centrifugal force that can better balance crankshaft when bent axle rotates.At main shaft four crank throws are set, the crank throw at main shaft two ends is positioned at a side of main shaft, and two middle crank throws are positioned at the opposite side of main shaft.
In above-mentioned motor car engine vibration damping bent axle, described crank throw comprises two symmetrical cranks and the rod journal that is connected two cranks, described crank is connected on the main shaft, described rod journal is connected to the end of two cranks, and above-mentioned counterweight block one is arranged on the crank and with crank and is connected as a single entity.Rod journal is connected to an end of crank, and is connected as a single entity with crank between two cranks, and the other end of crank links to each other with main shaft.
In above-mentioned motor car engine vibration damping bent axle, described vibration isolation rubber layer and counterweight block two are one section circular arc layer.
Compared with prior art, each balancer weight of this motor car engine vibration damping bent axle is Split type structure, each balancer weight is along comprising counterweight block one and counterweight block two perpendicular to major axes orientation, described counterweight block two and counterweight block one are provided with posterior limiting, but this elasitic layer absorbing vibrational energy is subdued torsional oscillation; In balancer weight, according to the relation of successively decreasing of crank shaft angle amplitude, the size of capable of regulating counterweight block two so just can be cut to the vibration of each crank throw same ideal value.
Description of drawings
Fig. 1 is the sectional structure schematic representation of this motor car engine vibration damping bent axle.
Fig. 2 is the sectional structure schematic representation of Figure 1A-A.
Among the figure, 1, main shaft; 2, crank throw; 3, balancer weight; 4, counterweight block one; 5, counterweight block two; 6, vibration isolation rubber layer; 7, crank; 8, rod journal.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Such as Fig. 1 or shown in Figure 2, this motor car engine vibration damping bent axle comprises main shaft 1, is arranged on four crank throws 2 and eight balancer weights 3 on the main shaft 1.Two crank throws 2 at main shaft 1 two ends are positioned at a side of main shaft 1, and two middle crank throws 2 are positioned at the opposite side of main shaft 1; Each crank throw 2 is comprised of two cranks 7 and a rod journal 8, these two cranks 7 are symmetrical, rod journal 8 is connected to an end of crank 7, and between two cranks 7, be connected as a single entity with crank 7, the other end of crank 7 links to each other with main shaft 1, and the shaft axis of the shaft axis of main shaft 1 and rod journal 8 is parallel to each other.Arrange balancer weight 3 can balance crankshaft crank throw 2 produces during rotation centrifugal force and centrifugal moment and reciprocal inertia force.
Each balancer weight 3 is Split type structure, each balancer weight 3 is along perpendicular to main shaft 1 direction counterweight block 1 and counterweight block 25 being set, be provided with posterior limiting between described counterweight block 25 and the counterweight block 1, counterweight block 1 in eight balancer weights 3 is structure as a whole with eight cranks 7 respectively, structure is arranged on the both sides of main shaft 1 in line, during Practical manufacturing, this elasitic layer is a vibration isolation rubber layer 6, this counterweight block 25 is fixed on the counterweight block 1 by vibration isolation rubber layer 6, these vibration isolation rubber layer 6 gels are between counterweight block 1 and counterweight block 25, when crankshaft vibration, the relative angle vibration is arranged between counterweight block 1 and the counterweight block 25, vibration isolation rubber layer 6 produces forward and reverse torsional deflection that alternately changes, vibration isolation rubber layer 6 distortion and the molecular friction of the rubber inside that produces, consume the crankshaft torsion vibrational energy, subdued torsional oscillation.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. motor car engine vibration damping bent axle, comprise main shaft (1), be arranged on some crank throws (2) and balancer weight (3) on the main shaft (1), described crank throw (2) is arranged on the main shaft (1), described balancer weight (3) be arranged on crank throw (2) upper and and crank throw (2) be arranged on along a straight line the both sides of main shaft (1), it is characterized in that, described each balancer weight (3) is Split type structure, each balancer weight (3) is provided with posterior limiting along perpendicular to main shaft (1) direction counterweight block one (4) and counterweight block two (5) being set between described counterweight block two (5) and the counterweight block one (4).
2. motor car engine vibration damping bent axle according to claim 1 is characterized in that, described elasitic layer is a vibration isolation rubber layer (6), and this counterweight block two (5) is fixed on the counterweight block one (4) by vibration isolation rubber layer (6).
3. motor car engine vibration damping bent axle according to claim 1 is characterized in that, described main shaft (1) is provided with even number crank throw (2).
4. according to claim 1 or 3 described motor car engine vibration damping bent axles, it is characterized in that, described crank throw (2) comprises two symmetrical cranks (7) and the rod journal (8) that is connected two cranks (7), described crank (7) is connected on the main shaft (1), described rod journal (8) is connected to the end of two cranks (7), and above-mentioned counterweight block one (4) is arranged on crank (7) and upward and with crank (7) is connected as a single entity.
5. motor car engine vibration damping bent axle according to claim 2 is characterized in that, described vibration isolation rubber layer (6) and counterweight block two (5) are one section circular arc layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220193055 CN202674162U (en) | 2012-04-28 | 2012-04-28 | Automobile engine vibration damping crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220193055 CN202674162U (en) | 2012-04-28 | 2012-04-28 | Automobile engine vibration damping crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674162U true CN202674162U (en) | 2013-01-16 |
Family
ID=47495068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220193055 Expired - Fee Related CN202674162U (en) | 2012-04-28 | 2012-04-28 | Automobile engine vibration damping crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653287A (en) * | 2013-11-22 | 2015-05-27 | 比亚迪股份有限公司 | Engine and vehicle with engine |
-
2012
- 2012-04-28 CN CN 201220193055 patent/CN202674162U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653287A (en) * | 2013-11-22 | 2015-05-27 | 比亚迪股份有限公司 | Engine and vehicle with engine |
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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: 20130116 Termination date: 20140428 |