CN108708934A - Two cylinder arbor system balance shock system - Google Patents
Two cylinder arbor system balance shock system Download PDFInfo
- Publication number
- CN108708934A CN108708934A CN201810859796.4A CN201810859796A CN108708934A CN 108708934 A CN108708934 A CN 108708934A CN 201810859796 A CN201810859796 A CN 201810859796A CN 108708934 A CN108708934 A CN 108708934A
- Authority
- CN
- China
- Prior art keywords
- balance
- bent axle
- belt pulley
- flywheel
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/24—Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a kind of two cylinder arbor system balance shock systems.The two cylinder arbor system balance shock system includes：Bent axle, including：The both sides of trunnion and connecting rod neck, the connecting rod neck are each formed with crank arm, and the end of the crank arm is formed with balance weight installation position；Crankshaft counter balance is arranged on the balance weight installation position of check of crankshaft；Belt pulley is laid in one end of the bent axle；Belt pulley counterweight；Flywheel is mounted on the other end of the bent axle；And flywheel counter weight；The product that the quality of the belt pulley counterweight is multiplied by belt pulley counterweight barycenter radius is equal to the quality of the flywheel counter weight and is multiplied by the product of flywheel counter weight barycenter radius.The two cylinder arbor system balance shock system carrys out balance rotating moment of inertia and shifts a part of the first order reciprocating inertia force square by adding eccentric mass on flywheel and belt pulley to generate additional countertorque so that the level of vibration of engine keeps good.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of two cylinder arbor system balance shock system.
Background technology
Existing two cylinder diesel does not only take balanced measure to rotatory inertia torque, to the first order reciprocating inertia force square
Do not take any transfer measure, therefore the machine is vertically and horizontally there is larger moment of inertia, so as to cause
The vibration of engine is very big.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
The purpose of the present invention is to provide a kind of simple and reasonable two cylinder arbor system balance shock system, the two cylinder machines
Shafting balancing vibration insulating system carrys out balance rotating by adding eccentric mass on flywheel and belt pulley to generate additional countertorque
Moment of inertia simultaneously shifts a part of the first order reciprocating inertia force square so that the level of vibration of engine keeps good.
To achieve the above object, the present invention provides a kind of two cylinder arbor system balance shock systems, including：Bent axle, including：
The both sides of trunnion and connecting rod neck, the connecting rod neck are each formed with crank arm, and the end of the crank arm is formed with balance weight installation
Position；Crankshaft counter balance is arranged on the balance weight installation position of check of crankshaft；Belt pulley is laid in the one of the bent axle
End；Belt pulley counterweight is arc, circumferentially spaced to offer multiple first bolt holes, and institute is fastened on by the first bolt
It states on belt pulley；Flywheel is mounted on the other end of the bent axle；And flywheel counter weight, it is arc, it is circumferentially spaced to open up
There are multiple second bolt holes, is fastened on the flywheel by the second bolt；The quality of the belt pulley counterweight is multiplied by belt
The product of wheel counterweight barycenter radius is multiplied by the product of flywheel counter weight barycenter radius equal to the quality of the flywheel counter weight.
In a preferred embodiment, crankshaft counter balance is structure as a whole with check of crankshaft or dismountable seperated ties
Structure.
In a preferred embodiment, crankshaft counter balance includes：The balance weight of separate removable structure is formed with bent axle
Ontology and by the balance block body be fixed to check of crankshaft on balancing block screw bolt.
In a preferred embodiment, between the bolt hole of the balance weight installation position of balancing block screw bolt and check of crankshaft
It is provided with set pin sleeve.
Compared with prior art, two cylinder arbor according to the present invention system balance shock system has the advantages that：It should
Two cylinder arbor system balance shock system makes the barycenter of single crank throw as possible far from bent axle by the radius by increasing balance weight
The heart balances the rotatory inertia torque of a part of big end.Remaining rotatory inertia torque and one order inertia torque by
On flywheel and belt pulley add eccentric mass, with generate additional countertorque come balance rotating moment of inertia and shift a part one
Rank reciprocal inertia force square so that the level of vibration of engine keeps good.
Description of the drawings
Fig. 1 is the crankshaft structure schematic diagram of two cylinder arbor system balance shock system according to an embodiment of the present invention.
Fig. 2 is the belt pulley sectional structure signal of two cylinder arbor system balance shock system according to an embodiment of the present invention
Figure.
Fig. 3 is the flywheel structure schematic diagram of two cylinder arbor system balance shock system according to an embodiment of the present invention.
Fig. 4 is the single crank throw coordinate diagram of two cylinder arbor system balance shock system according to an embodiment of the present invention.
Fig. 5 is the toggle stress of two cylinder arbor system balance shock system according to an embodiment of the present invention
Figure.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, two cylinder arbor according to the preferred embodiment of the present invention system balance shock system is designing
In, rotatory inertia torque answers complete equipilibrium, and (50~100) % of the first order reciprocating inertia force square should be transferred to water from vertical direction
Square to so the radius of balance weight should be increased as far as possible for the bent axle of two cylinder diesels, making the barycenter of single crank throw as possible
Far from crankshaft center.The rotatory inertia torque of a part of big end can be balanced in this way.Remaining rotatory inertia torque and
One order inertia torque can be by adding eccentric mass on flywheel and belt pulley, and to generate additional countertorque, to carry out balance rotating used
Property torque simultaneously shifts a part of the first order reciprocating inertia force square.The dynamic balance running of bent axle additional process should then match at connecting rod journal diameter
Weight (being equal to big end quality) carries out, and belt pulley and flywheel should individually carry out static balancing test without being carried out together with bent axle
Dynamic balance running.The concrete structure of the two cylinder arbor system balance shock system includes：Bent axle 1, crankshaft counter balance 6, belt pulley 2,
Belt pulley counterweight 3, flywheel 4 and flywheel counter weight 5.Bent axle, the enlarging radius of crankshaft counter balance keep the barycenter of single crank throw remote as possible
From crankshaft center, to balance the rotatory inertia torque of a part of big end.Belt pulley counterweight 3 and flywheel counter weight 5 are as winged
Wheel and belt pulley on additional eccentric mass, with generate additional countertorque come balance rotating moment of inertia and shift a part one
Rank reciprocal inertia force square.
Specifically, bent axle is the main rotary gadget of engine, after loading onto connecting rod, can accept the fortune (reciprocal) up and down of connecting rod
It is dynamic to become to recycle (rotation) movement.It is an important parts on engine, material is cast by carbon structural steels or spheroidal graphite
Made of iron, the lubrication of bent axle is primarily referred to as the profit of lubrication and both ends fixed point with big end bearing shell and crank-shaft link neck
The rotation of sliding bent axles is the power source of engine.It is also the driving source of entire mechanical system.Bent axle 1 includes two significant points：
Trunnion and connecting rod neck.Trunnion is installed on cylinder body, and connecting rod neck is connect with crank pin end pore, and connecting rod small end hole is lived with cylinder
Plug connection, is a typical slider-crank mechanism.The both sides of connecting rod neck are each formed with crank arm, and the end of crank arm is formed with
Balance weight installation position.
Crankshaft counter balance is arranged on the balance weight installation position of check of crankshaft, be used for balance crankshaft rotating inertia force and its
Torque makes bent axle reach internal balance.Preferably, the concrete structure of crankshaft counter balance includes：Separate removable is formed with bent axle
Structure balances block body and by the balance block body fixed to the balancing block screw bolt on check of crankshaft.Wherein, balance weight sheet
Body is fixed to by balancing block screw bolt on the crank arm of bent axle, is used for balance crankshaft rotating inertia force and its torque, bent axle is made to reach
To internal balance.If bent axle repairs in use, need to dismantle balance block body from the crank arm of bent axle
Get off, balancing block screw bolt is dismantled repeatedly can cause it to be generated between the bolt hole of the balance weight installation position of check of crankshaft centainly
Gap cannot keep stablizing under bent axle rotation status so as to cause balance block body and bent axle, therefore, in balancing block screw bolt and
Set pin sleeve is provided between the bolt hole of the balance weight installation position of check of crankshaft to be positioned, it is anti-to eliminate balancing block screw bolt
Multiple dismounting can cause the certain interval that it is generated between the bolt hole of the balance weight installation position of check of crankshaft, so that flat
Weighing apparatus block body can keep stablizing under bent axle rotation status with bent axle.To sum up, which is and bent axle separate removable
Structure, be bolted on the crank arm of bent axle, assembly and disassembly facility, can be separately machined with bent axle, simplify processing technology,
And different materials can be used, reduce material cost.
Belt pulley 2 is laid in one end of bent axle 1, for driving water pump, generator, air-conditioning pump work.Belt pulley counterweight 3 is
Arc, it is circumferentially spaced to offer multiple first bolt holes, over pulleys carried by the fastening of the first bolt.Preferably, first
Bolt hole is three.
Flywheel 4 is mounted in the other end of engine crankshaft 1, has rotator inertia, its effect is to store engine power
Get up, overcome the resistance of other component, makes bent axle Rotating with Uniform；By the clutch on flywheel, engine and vapour
Vehicle is sequentially connected；It is engaged with starter, is convenient for engine start.And it is that crank position sensing is integrated with what speed sensed
Place.Flywheel counter weight 5 is arc, circumferentially spaced to offer multiple second bolt holes, is fastened on flywheel by the second bolt.
Preferably, the second bolt hole is four.
Fig. 4 is single crank throw coordinate diagram, and the quality and barycenter according to the single crank throw of bent axle (not including main shaft diameter) are established, and
Using the intersection point of cylinder centerline and crankshaft main-shaft diameters center line as coordinate origin.
Wherein, crank throw radius r；
Bore spacing a；
Big end average quality：ml1；
Small end of connecting rod average quality：ml2；
Piston group average quality：mh；
Fig. 5 is toggle force diagram, the rotating inertia force of big end：
Kr1=Kr2=ml1·r·ω2
The rotating inertia force of crank throw：
Kp1=Kp2=mp·r′·ω2
The first order reciprocating inertia force of piston connecting rod unit
Pj1=Pj2=mj·r·ω2Cos α=(ml2+mh)·r·ω2·cosα
The result of balance：
1, rotation and the first order reciprocating inertia force resultant force calculate
The resultant force of rotatory inertia：
FR=Kr1+Kp2-Kp1-Kr2=0
The resultant force of the first order reciprocating inertia force：
Fj=Pj1-Pj2=0
2, the resultant moment of rotation and reciprocal inertia force square calculates
Respectively to O point power taking squares, and it is positive direction in a clockwise direction, then：
The resultant moment of rotating inertia force is：
MRotation=Kr1·a/2+Kr2·a/2-Kp1·a/2-Kp2·a/2
=Kr1·a-Kp1·a
=(Kr1-Kp1)·a
The resultant moment of the first order reciprocating inertia force is：
Mj=Pj1·a/2+Pj2·a/2
=Pj1·a
The rotating inertia force of diesel engine and the resultant force of the first order reciprocating inertia force are that zero i.e. inertia force is balance.And rotate and
The resultant moment that the first order reciprocating inertia force generates is not zero in vertical plane and horizontal plane.In above-mentioned two torque, single order is past
Multiple moment of inertia is in vertical plane always, and when piston is in top dead centre or lower dead center, (α is 0 ° or 180 ° of crank angles
When), the first order reciprocating inertia force square is maximum；And the side of the rotatory inertia torque caused by the rotating inertia force of big end and crank throw
Constantly change to the rotation with bent axle, but its size is constant.It can be seen that when piston is in top dead centre or lower dead center, hanging down
The resultant moment that histogram obtains inertia force upwards is maximum.And when piston is in cylinder middle section (when α is 90 °), horizontal direction obtains
Maximum moment of inertia.
When α=0 ° or 180 °,
The resultant moment of the moment of inertia of vertical direction is：
MV=MRotation+Mj
The resultant moment of the moment of inertia of horizontal direction is：
MH=0；
When α=90 ° or 270 °,
The resultant moment of the moment of inertia of vertical direction is：
MV=0；
The resultant moment of the moment of inertia of horizontal direction is：
MH=MRotation+Mj
Moment of resistance (not generally being 0) K of the crank throw rotary inertia torque of the application two cylinder arbor system balance shock systemp1=
Kr, the maximum value of the resultant moment of the moment of inertia of vertical direction is 0, and the maximum value of the resultant moment of the moment of inertia of horizontal direction is
When 0, the level of vibration of engine is best.Therefore, the quality of belt pulley counterweight is multiplied by the product of belt pulley counterweight barycenter radius
Equal to the product that the quality of flywheel counter weight is multiplied by flywheel counter weight barycenter radius, could meet in this way shafting vertical direction torque
It is 0.
To sum up, which makes the matter of single crank throw by the radius by increasing balance weight
The heart far from crankshaft center, balances the rotatory inertia torque of a part of big end as possible.Remaining rotatory inertia torque and one
Rank moment of inertia carrys out balance rotating inertia force by adding eccentric mass on flywheel and belt pulley to generate additional countertorque
Square simultaneously shifts a part of the first order reciprocating inertia force square so that the level of vibration of engine keeps good.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of two cylinder arbor system balance shock system, which is characterized in that including：
Bent axle, including：The both sides of trunnion and connecting rod neck, the connecting rod neck are each formed with crank arm, the end shape of the crank arm
At there is balance weight installation position；
Crankshaft counter balance is arranged on the balance weight installation position of check of crankshaft；
Belt pulley is laid in one end of the bent axle；
Belt pulley counterweight is arc, circumferentially spaced to offer multiple first bolt holes, and institute is fastened on by the first bolt
It states on belt pulley；
Flywheel is mounted on the other end of the bent axle；And
Flywheel counter weight is arc, circumferentially spaced to offer multiple second bolt holes, is fastened on by the second bolt described
On flywheel；The quality of the belt pulley counterweight is multiplied by quality of the product equal to the flywheel counter weight of belt pulley counterweight barycenter radius
It is multiplied by the product of flywheel counter weight barycenter radius.
2. two cylinder arbor as described in claim 1 system balance shock system, which is characterized in that the crankshaft counter balance and bent axle
Crank arm is structure as a whole or dismountable separate structure.
3. two cylinder arbor as claimed in claim 2 system balance shock system, which is characterized in that the crankshaft counter balance includes：
The balance block body of separate removable structure is formed with bent axle and the balance block body is fixed to the balance on check of crankshaft
Block bolt.
4. two cylinder arbor as claimed in claim 3 system balance shock system, which is characterized in that the balancing block screw bolt and bent axle
It is provided with set pin sleeve between the bolt hole of the balance weight installation position of crank arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859796.4A CN108708934A (en) | 2018-08-01 | 2018-08-01 | Two cylinder arbor system balance shock system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859796.4A CN108708934A (en) | 2018-08-01 | 2018-08-01 | Two cylinder arbor system balance shock system |
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| Publication Number | Publication Date |
|---|---|
| CN108708934A true CN108708934A (en) | 2018-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810859796.4A Pending CN108708934A (en) | 2018-08-01 | 2018-08-01 | Two cylinder arbor system balance shock system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3702640A1 (en) * | 2019-03-01 | 2020-09-02 | Deere & Company | Balancing means for a combustion engine |
| CN111664161A (en) * | 2020-06-22 | 2020-09-15 | 河南柴油机重工有限责任公司 | Novel crankshaft shafting arrangement structure of V-shaped 20-cylinder diesel engine |
| CN113490801A (en) * | 2019-03-25 | 2021-10-08 | 爱信高丘株式会社 | Flexible flywheel |
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| CN208565420U (en) * | 2018-08-01 | 2019-03-01 | 广西玉柴机器股份有限公司 | Two cylinder arbor system balance shock system |
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| CN101210600A (en) * | 2006-12-31 | 2008-07-02 | 奇瑞汽车有限公司 | Crankshaft equilibrium mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3702640A1 (en) * | 2019-03-01 | 2020-09-02 | Deere & Company | Balancing means for a combustion engine |
| CN113490801A (en) * | 2019-03-25 | 2021-10-08 | 爱信高丘株式会社 | Flexible flywheel |
| US11873879B2 (en) | 2019-03-25 | 2024-01-16 | Aisin Takaoka Co., Ltd. | Flexible flywheel |
| CN111664161A (en) * | 2020-06-22 | 2020-09-15 | 河南柴油机重工有限责任公司 | Novel crankshaft shafting arrangement structure of V-shaped 20-cylinder diesel engine |
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Application publication date: 20181026 |
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