CN208619593U - Three cylinder arbor system balance shock systems - Google Patents
Three cylinder arbor system balance shock systems Download PDFInfo
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- CN208619593U CN208619593U CN201821232860.8U CN201821232860U CN208619593U CN 208619593 U CN208619593 U CN 208619593U CN 201821232860 U CN201821232860 U CN 201821232860U CN 208619593 U CN208619593 U CN 208619593U
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- crankshaft
- balance
- belt pulley
- flywheel
- counter weight
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Abstract
The utility model discloses a kind of three cylinder arbor system balance shock systems.The three cylinders arbor system balance shock system includes: crankshaft, comprising: trunnion and connecting rod neck, the two sides of 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, comprising: form the balance block body of separate removable structure with crankshaft and the balance block body is fixed to the balancing block screw bolt on check of crankshaft；Belt pulley；Belt pulley counterweight；Flywheel is mounted on the other end of the crankshaft；And flywheel counter weight；The quality of the belt pulley counterweight is equal to the quality of the flywheel counter weight multiplied by the product of flywheel counter weight mass center radius multiplied by the product of belt pulley counterweight mass center radius.The three cylinders 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 utility model is about engine art, especially with regard to a kind of three cylinder arbor system balance shock systems.
Background technique
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 biggish moment of inertia, so as to cause
The vibration of engine is very big.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of three simple and reasonable cylinder arbor system balance shock systems, this three
Cylinder arbor system balance shock system is balanced by adding eccentric mass on flywheel and belt pulley with generating additional countertorque
Rotatory inertia torque 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 utility model provides a kind of three cylinder arbor system balance shock systems, comprising: crankshaft,
It include: trunnion and connecting rod neck, the two sides of 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, comprising: form the balance block body of separate removable structure with crankshaft and consolidate the balance block body
Determine to the balancing block screw bolt on check of crankshaft；Belt pulley is laid in one end of the crankshaft；Belt pulley counterweight is arc,
It is circumferentially spaced to offer multiple first bolt holes, through the first bolt fastening on the belt pulley；Flywheel is mounted on
The other end of the crankshaft；And flywheel counter weight, it is arc, it is circumferentially spaced to offer multiple second bolt holes, pass through
Second bolt fastening is on the flywheel；The quality of the belt pulley counterweight is equal to multiplied by the product of belt pulley counterweight mass center radius
The quality of the flywheel counter weight multiplied by flywheel counter weight mass center radius product.
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, three cylinders arbor system according to the present utility model balance shock system has following beneficial to effect
Fruit: the three cylinders arbor system balance shock system passes through the radius by increasing balance weight, keeps the mass center of single crank throw separate as far as possible
Crankshaft center balances the rotatory inertia torque of a part of big end.Remaining rotatory inertia torque and one order inertia torque
By adding eccentric mass on flywheel and belt pulley, come balance rotating moment of inertia and transfer one to generate additional countertorque
Part the first order reciprocating inertia force square, so that the level of vibration of engine keeps good.
Detailed description of the invention
Fig. 1 is illustrated according to the crankshaft structure of three cylinder arbor system balance shock systems of one embodiment of the utility model
Figure.
Fig. 2 is the belt pulley sectional structure according to three cylinder arbor system balance shock systems of one embodiment of the utility model
Schematic diagram.
Fig. 3 is illustrated according to the flywheel structure of three cylinder arbor system balance shock systems of one embodiment of the utility model
Figure.
Fig. 4 is the single crank throw coordinate according to three cylinder arbor system balance shock systems of one embodiment of the utility model
Figure.
Fig. 5 be according to the crank link mechanisms of three cylinder arbor system balance shock systems of one embodiment of the utility model by
Try hard to.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, it is being set according to the three cylinder arbor system balance shock systems of the preferred embodiments of the present invention
In meter, rotatory inertia torque answers complete equipilibrium, and (50~100) % of the first order reciprocating inertia force square should be transferred to from vertical direction
Horizontal direction keeps the mass center of single crank throw most so should increase the radius of balance weight as far as possible for the crankshaft of two cylinder diesels
It measures 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 carry 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.The dynamic balance running of crankshaft then should at connecting rod journal diameter additional process
Counterweight (being equal to big end quality) carries out, belt pulley and flywheel should individually carry out static balancing test without together with crankshaft into
Action balance test.The specific structure of the three cylinders arbor system balance shock system includes: crankshaft 1, crankshaft counter balance 6, belt pulley
2, belt pulley counterweight 3, flywheel 4 and flywheel counter weight 5.Crankshaft, the enlarging radius of crankshaft counter balance make the mass center of single crank throw as far as possible
Far from crankshaft center, to balance the rotatory inertia torque of a part of big end.5 conduct of belt pulley counterweight 3 and flywheel counter weight
Additional eccentric mass on flywheel and belt pulley carrys out balance rotating moment of inertia and shifts a part to generate additional countertorque
The first order reciprocating inertia force square.
Specifically, crankshaft 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 structural carbon steel or spheroidal graphite
Made of iron, the lubrication of crankshaft 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 crankshaft is the power source of engine.It is also the driving source of entire mechanical system.Crankshaft 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 and cylinder are living
Plug connection, is a typical slider-crank mechanism.The two 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 to balance crankshaft rotating inertia force and its
Torque makes crankshaft reach internal balance.Preferably, the specific structure of crankshaft counter balance includes: to form separate removable with crankshaft
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 on the crank arm of crankshaft by balancing block screw bolt, is used to balance crankshaft rotating inertia force and its torque, is reached crankshaft
To internal balance.If crankshaft repairs in use, need to dismantle balance block body from the crank arm of crankshaft
Get off, balancing block screw bolt is dismantled repeatedly will cause it and generate between the bolt hole of the balance weight installation position of check of crankshaft centainly
Gap cannot keep stablizing under crankshaft rotation status so as to cause balance block body and crankshaft, 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 disassembly will cause its certain interval generated between the bolt hole of the balance weight installation position of check of crankshaft, so that flat
Weighing apparatus block body and crankshaft can keep stablizing under crankshaft rotation status.To sum up, which is and crankshaft separate removable
Structure, be bolted on the crank arm of crankshaft, assembly and disassembly convenience, can be separately machined with crankshaft, simplify processing technology,
And different materials can be used, reduce material cost.
Belt pulley 2 is laid in one end of crankshaft 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 first bolt fastening.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 crankshaft Rotating with Uniform；By the clutch being mounted on flywheel, engine and vapour
Vehicle transmission connection is got up；It is engaged with starter, is convenient for engine start.It and 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, through the second bolt fastening on flywheel.
Preferably, the second bolt hole is four.
Fig. 4 is single crank throw coordinate diagram, and the quality and mass center according to the single crank throw of crankshaft (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 be crank link mechanism 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
It respectively to O point power taking square, and is in a clockwise direction positive direction, then:
The resultant moment of rotating inertia force are as follows:
MRotation=Kr1·a/2+Kr2A/2-Kp1A/2-Kp2·a/2
=Kr1A-Kp1·a
=(Kr1- Kp1)·a
The resultant moment of the first order reciprocating inertia force are as follows:
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 as caused by the rotating inertia force of big end and crank throw
Constantly change to the rotation with crankshaft, but its size is constant.It can be seen that hanging down when piston is in top dead centre or lower dead center
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 are as follows:
MV=MRotation+Mj
The resultant moment of the moment of inertia of horizontal direction are as follows:
MH=0；
When α=90 ° or 270 °,
The resultant moment of the moment of inertia of vertical direction are as follows:
MV=0；
The resultant moment of the moment of inertia of horizontal direction are as follows:
MH=MRotation+Mj
Moment of resistance (not generally being 0) K of the crank throw rotary inertia torque of three cylinder arbor system balance shock system of the applicationp1=
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 multiplied by belt pulley counterweight mass center radius product
Equal to flywheel counter weight quality multiplied by the product of flywheel counter weight mass center radius, be just able to satisfy shafting in this way in the torque of vertical direction
It is 0.
To sum up, which passes through the radius by increasing balance weight, makes the matter of single crank throw
The heart far from crankshaft center, balances the rotatory inertia torque of a part of big end as far 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 utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (2)
1. a kind of three cylinder arbor system balance shock systems characterized by comprising
Crankshaft, comprising: trunnion and connecting rod neck, the two sides of 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, comprising: form the balance block body of separate removable structure with crankshaft and fix the balance block body
Balancing block screw bolt on to check of crankshaft；
Belt pulley is laid in one end of the crankshaft；
Belt pulley counterweight is arc, circumferentially spaced to offer multiple first bolt holes, by the first bolt fastening in institute
It states on belt pulley；
Flywheel is mounted on the other end of the crankshaft；And
Flywheel counter weight is arc, circumferentially spaced to offer multiple second bolt holes, by the second bolt fastening described
On flywheel；The quality of the belt pulley counterweight is equal to the quality of the flywheel counter weight multiplied by the product of belt pulley counterweight mass center radius
Multiplied by the product of flywheel counter weight mass center radius.
2. three cylinders arbor system as described in claim 1 balance shock system, which is characterized in that the balancing block screw bolt and crankshaft
Set pin sleeve is provided between the bolt hole of the balance weight installation position of crank arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232860.8U CN208619593U (en) | 2018-08-01 | 2018-08-01 | Three cylinder arbor system balance shock systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232860.8U CN208619593U (en) | 2018-08-01 | 2018-08-01 | Three cylinder arbor system balance shock systems |
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| CN208619593U true CN208619593U (en) | 2019-03-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708935A (en) * | 2018-08-01 | 2018-10-26 | 广西玉柴机器股份有限公司 | Three cylinder arbor system balance shock systems |
| 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 |
-
2018
- 2018-08-01 CN CN201821232860.8U patent/CN208619593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708935A (en) * | 2018-08-01 | 2018-10-26 | 广西玉柴机器股份有限公司 | Three cylinder arbor system balance shock systems |
| 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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