CN209483868U - The balanced structure of engine crankshaft - Google Patents
The balanced structure of engine crankshaft Download PDFInfo
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- CN209483868U CN209483868U CN201920204562.6U CN201920204562U CN209483868U CN 209483868 U CN209483868 U CN 209483868U CN 201920204562 U CN201920204562 U CN 201920204562U CN 209483868 U CN209483868 U CN 209483868U
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Abstract
The utility model discloses a kind of balanced structures of engine crankshaft, including ontology, the installation bolt of balance weight and balance weight, ontology successively includes the first crank throw unit from left end to right end, second crank throw unit, third crank throw unit, 4th crank throw unit, 5th crank throw unit, 6th crank throw unit, 7th crank throw unit and the 8th crank throw unit, axial line from left end along ontology is watched, followed order by ten two points along clockwise direction is the first crank throw unit, 7th crank throw unit, third crank throw unit, 5th crank throw unit, 8th crank throw unit, second crank throw unit, 6th crank throw unit, 4th crank throw unit, and the first crank throw unit, 7th crank throw unit, third crank throw unit, 5th crank throw unit, 8th crank throw unit, second crank throw unit, 6th crank throw unit, 4th crank throw unit is along circle Circumferential direction is uniformly distributed.Whereby, the moving equilibrium degree that can reach crankshaft and piston rod is high, and deflection of crankshaft deforms small feature.
Description
Technical field
The utility model is about field of internal combustion engine, especially with regard to a kind of balanced structure of engine crankshaft.
Background technique
Crankshaft is for that will move back and forth a kind of structure for being changed into rotary motion in engine, and crankshaft rear end installation flies
Wheel, as main output end.Crankshaft front end is equipped with driving gear and belt pulley, the driving as valve actuating mechanism and attachment.It is bent
There are centrifugal force, centrifugal moment, reciprocal inertia force, reciprocal inertia force squares in axis and piston rod motion process.Usually in crankshaft
The balance weight of the big quality of upper setting make crankshaft during operation the centrifugal force of balance weight and centrifugal moment and crankshaft, piston,
Centrifugal force, centrifugal moment, reciprocal inertia force, the reciprocal inertia force square of link motion generation cancel out each other to keep movement flat
Weighing apparatus reduces deflection of crankshaft deformation, reduces the vibration of engine.Power in the crankshaft and balance block structure operation process of conventional engines
And equalising torque characteristic is bad, bending deformation is big, causes that engine luggine is big, noise is big, and Lubrication Film Thickness is uneven, bearing
Eccentric wear, poor reliability.
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 balanced structures of engine crankshaft, enable to engine crankshaft
And moving equilibrium in piston rod motion process, deflection of crankshaft deform small feature.
To achieve the above object, the utility model provides a kind of balanced structure of engine crankshaft, including ontology, balance
The installation bolt of block and balance weight, ontology successively include the first crank throw unit, the second crank throw unit, third from left end to right end
Crank throw unit, the 4th crank throw unit, the 5th crank throw unit, the 6th crank throw unit, the 7th crank throw unit and the 8th crank throw unit,
Axial line from left end along ontology is watched, and the followed order by ten two points along clockwise direction is the first crank throw list
Member, the 7th crank throw unit, third crank throw unit, the 5th crank throw unit, the 8th crank throw unit, the second crank throw unit, the 6th crank throw
Unit, the 4th crank throw unit, and the first crank throw unit, the 7th crank throw unit, third crank throw unit, the 5th crank throw unit, the 8th
Crank throw unit, the second crank throw unit, the 6th crank throw unit, the 4th crank throw unit are distributed uniformly and circumferentially.
In a preferred embodiment, each crank throw unit includes rod journal and is symmetricly set on rod journal two
The crank throw and balance weight at end have mounting plane on each crank throw, and each mounting plane is to install one piece of balance weight.
In a preferred embodiment, the axial line from left end along ontology is watched, the first crank throw and balance weight, the second song
It turns and balance weight, the 7th crank throw and balance weight, the 8th crank throw and balance weight, zigzag turns and balance weight, the tenth crank throw and balance
The song that the center line of every piece of balance weight of block, the 15th crank throw and balance weight, the 16th crank throw and balance weight is all installed with it
The center line turned counterclockwise deflects 11.35 °.
In a preferred embodiment, the first crank throw and balance weight, the second crank throw and balance weight, the 7th crank throw and balance
Block, the 8th crank throw and balance weight, zigzag turns and balance weight, the tenth crank throw and balance weight, the 15th crank throw and balance weight and
The shape and weight of the balance weight of 16th crank throw and balance weight are all the same.
In a preferred embodiment, the axial line from left end along ontology is watched, third crank throw and balance weight, the 4th song
Turn and the center line of every piece of balance weight of balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance weight all with its institute
The center line of the crank throw of installation deflects 22.5 ° toward the clockwise direction.
In a preferred embodiment, third crank throw and balance weight, the 4th crank throw and balance weight, the 13rd crank throw and flat
The shape and weight of the balance weight of weighing apparatus block, the 14th crank throw and balance weight are all the same.
In a preferred embodiment, the axial line from left end along ontology is watched, the 5th crank throw and balance weight, the 6th song
Turn and the center line of every piece of balance weight of balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance weight all with its institute
The center line of the crank throw of installation counterclockwise deflects 22.5 °.
In a preferred embodiment, the 5th crank throw and balance weight, the 6th crank throw and balance weight, the 11st crank throw and flat
The shape and weight of the balance weight of weighing apparatus block, the 12nd crank throw and balance weight are all the same.
In a preferred embodiment, third crank throw and balance weight, the 4th crank throw and balance weight, the 13rd crank throw and flat
Weighing apparatus block, the 14th crank throw and balance weight the quality of balance weight to be a1 and its mass center be to the distance of rotation center of crankshaft
b1；5th crank throw and balance weight, the 6th crank throw and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance weight
The quality of balance weight be a2 and its mass center to the distance of the rotation center of crankshaft be b2, and a1 × b1 × 5=a2 × b2 × 3.
In a preferred embodiment, the balanced structure of engine crankshaft further includes belt pulley the installation diameter of axle, timing gear
Wheel installation axle journal, the first trunnion, the second trunnion, third trunnion, the 4th trunnion, the 5th trunnion, the 6th trunnion,
7th trunnion, the 8th trunnion, the 9th trunnion, the Rear oil seal sealing diameter of axle and flywheel install the diameter of axle；Belt pulley installation axle
Diameter is located at the left end of crankshaft, and timing gears install axle journal and belt pulley installs the concentric connection of the diameter of axle, the first trunnion with just
When the concentric connection of gear mounting shaft neck, the second trunnion is between the first crank throw unit and the second crank throw unit, third master
For axle journal between the second crank throw unit and third crank throw unit, the 4th trunnion is located at third crank throw unit and the 4th crank throw list
Between member, for the 5th trunnion between the 4th crank throw unit and the 5th crank throw unit, the 6th trunnion is located at the 5th crank throw list
Between member and the 6th crank throw unit, the 7th trunnion is between the 6th crank throw unit and the 7th crank throw unit, the 8th trunnion
Between the 7th crank throw unit and the 8th crank throw unit, the 9th trunnion is located at the 8th crank throw unit and the Rear oil seal sealing diameter of axle
Between, the flywheel installation diameter of axle is located at right end, and seals the concentric connection of the diameter of axle with Rear oil seal.
Compared with prior art, the balanced structure of the engine crankshaft of the utility model has following the utility model has the advantages that it is bent
Axis has good equilibrium response, the reciprocal inertia force square that the centrifugal moment and piston rod movement for capableing of balance crankshaft generate, bent
Bending shaft deforms that small high reliablity, engine luggine be small, low noise.Balance weight is fixed on crank throw with bolt, so that knot
Structure is succinct, simple process, and manufacturing cost is cheap.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the crankshaft and balanced structure according to one embodiment of the utility model.
Fig. 2 is the schematic diagram according to the crank throw unit of the crankshaft and balanced structure of one embodiment of the utility model.
Fig. 3 be convex 1 A to schematic diagram.
Fig. 4 is the signal according to the crankshaft of one embodiment of the utility model and the first crank throw of balanced structure and balance weight
Figure.
Fig. 5 is the signal according to the crankshaft of one embodiment of the utility model and the third crank throw of balanced structure and balance weight
Figure.
Fig. 6 is the signal according to the crankshaft of one embodiment of the utility model and the 5th crank throw of balanced structure and balance weight
Figure
Main appended drawing reference explanation:
1- belt pulley installs the diameter of axle, and 2- timing gears install axle journal, the first trunnion of 3-, the first crank throw of 4- and balance weight,
5- first connecting rod axle journal, the second crank throw of 6- and balance weight, the second trunnion of 7-, 8- third crank throw and balance weight, 9- second connecting rod
Axle journal, the 4th crank throw of 10- and balance weight, 11- third trunnion, the 5th crank throw of 12- and balance weight, 13- third connecting rod axle journal,
The 6th crank throw of 14- and balance weight, the 4th trunnion of 15-, the 7th crank throw of 16- and balance weight, 17- fourth link axle journal, 18- the 8th
Crank throw and balance weight, the 5th trunnion of 19-, 20- zigzag turns and balance weight, the 5th rod journal of 21-, the tenth crank throw of 22- and
Balance weight, the 6th trunnion of 23-, the 11st crank throw of 24- and balance weight, 25- six-bar linkage axle journal, the 12nd crank throw of 26- and flat
Weigh block, the 7th trunnion of 27-, the 13rd crank throw of 28- and balance weight, 29- seven-link assembly axle journal, the 14th crank throw of 30- and balance
Block, the 8th trunnion of 31-, the 15th crank throw of 32- and balance weight, the 8th rod journal of 33-, the 16th crank throw of 34- and balance weight,
The 9th trunnion of 35-, 36- Rear oil seal seal the diameter of axle, and 37- flywheel installs the diameter of axle, 39- mounting plane, and 39- installs bolt.
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, Fig. 1 is the structural schematic diagram of the crankshaft according to one embodiment of the utility model and balanced structure.
According to a kind of balanced structure of engine crankshaft of the preferred embodiments of the present invention, including ontology 100, balance weight and flat
The installation bolt 39 of weighing apparatus block, ontology 100 are from left to right followed successively by the belt pulley installation diameter of axle 1, timing gears installation axle journal 2, first
Trunnion 3, the first crank throw and balance weight 4, first connecting rod axle journal 5, the second crank throw and balance weight 6, the second trunnion 7, third are bent
Turn and balance weight 8, second connecting rod axle journal 9, the 4th crank throw and balance weight 10, third trunnion 11, the 5th crank throw and balance weight 12,
Third connecting rod axle journal 13, the 6th crank throw and balance weight 14, the 4th trunnion 15, the 7th crank throw and balance weight 16, fourth link axis
Neck 17, the 8th crank throw and balance weight 18, the 5th trunnion 19, zigzag turns and balance weight 20, the 5th rod journal the 21, the tenth are bent
It turns and balance weight 22, the 6th trunnion 23, the 11st crank throw and balance weight 24, six-bar linkage axle journal 25, the 12nd crank throw and flat
Weighing apparatus block 26, the 7th trunnion 27, the 13rd crank throw and balance weight 28, seven-link assembly axle journal 29, the 14th crank throw and balance weight 30,
8th trunnion 31, the 15th crank throw and balance weight 32, the 8th rod journal 33, the 16th crank throw and balance weight the 34, the 9th are main
Axle journal 35, the Rear oil seal sealing diameter of axle 36 and flywheel install the diameter of axle 37.Its middle belt pulley installation axle diameter 1, timing gears install axle journal
2,3, first to the 9th week diameter of axle of the first trunnion, the Rear oil seal sealing diameter of axle 36 and the flywheel installation diameter of axle 37 are concentric；First
To the 8th rod journal axle center different from each other, and the axle center of the first to the 8th rod journal with the axle center of crankshaft body 100 along circle
Circumferential direction is uniformly distributed.
As shown in Fig. 2, Fig. 2 is showing according to the crank throw unit of the crankshaft and balanced structure of one embodiment of the utility model
It is intended to.In some embodiments, a connecting rod journal diameter and two crank throws adjacent thereto and balance weight constitute a crank throw list
Member is designed with mounting plane on each crank throw for disposing balance weight, and each balance weight is fixed with two installation bolts 39
On the mounting plane of crank throw.
As shown in figure 3, Fig. 3 be convex 1 A to schematic diagram.In some embodiments, from left end along the axle center of ontology 100
Line viewing, the first crank throw and balance weight 4, the second crank throw and balance weight, the 7th crank throw and balance weight, the 8th crank throw and balance weight,
Zigzag turns and every piece of balance weight, the tenth crank throw and balance weight, the 15th crank throw and balance weight, the 16th crank throw and balance weight
The center line for the crank throw that the center line of balance weight is all installed with it counterclockwise deflects 11.35 °, and balance weight above-mentioned
Shape and weight it is all the same.
As shown in figure 4, Fig. 4 is according to the crankshaft of one embodiment of the utility model and the first crank throw of balanced structure and to put down
The schematic diagram of weighing apparatus block 4.In some embodiments, the axial line from left end along ontology 100 is watched, third crank throw and balance weight,
The center line of every piece of balance weight of the 4th crank throw and balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance weight is all
The center line for the crank throw installed with it deflects 22.5 ° toward the clockwise direction, and the shape of balance weight above-mentioned and weight are homogeneous
Together.
As shown in figure 5, Fig. 5 is according to the crankshaft of one embodiment of the utility model and the third crank throw of balanced structure and to put down
The schematic diagram of weighing apparatus block.In some embodiments, the axial line from left end along ontology 100 is watched, third crank throw and balance weight, the
The center line of every piece of balance weight of four crank throws and balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance weight all with
The center line of its crank throw installed deflects 22.5 ° toward the clockwise direction, and the shape of balance weight above-mentioned and weight are all the same.
As shown in fig. 6, Fig. 6 is according to the crankshaft of one embodiment of the utility model and the 5th crank throw of balanced structure and to put down
The schematic diagram of weighing apparatus block.In some embodiments, the axial line from left end along ontology 100 is watched, the 5th crank throw and balance weight, the
The center line of every piece of balance weight of six crank throws and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance weight all with
The center line of its crank throw installed counterclockwise deflects 22.5 °, and the shape of balance weight above-mentioned and weight are all the same.
In some embodiments, if default third crank throw and balance weight, the 4th crank throw and balance weight, the 13rd crank throw
And the quality of the balance weight of balance weight, the 14th crank throw and balance weight be a1 and its mass center to crankshaft rotation center distance
For b1；It presets the 5th crank throw and balance weight, the 6th crank throw and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and puts down
Weigh block balance weight quality be a2 and its mass center to the distance of rotation center of crankshaft be b2；Relationship so between them
Are as follows: a1 × b1 × 5=a2 × b2 × 3.
In conclusion the balanced structure of the engine crankshaft of the utility model has the advantages that crankshaft has good put down
Weigh characteristic, the reciprocal inertia force square that the centrifugal moment and piston rod movement for capableing of balance crankshaft generate, and deflection of crankshaft deformation is small
Good reliability, engine luggine be small, low noise.Balance weight is fixed in bolt to turn, so that simple for structure, technique letter
Single, manufacturing cost is low.
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 (10)
1. a kind of balanced structure of engine crankshaft, which is characterized in that the installation including ontology, balance weight and the balance weight
Bolt, the ontology successively include the first crank throw unit, the second crank throw unit, third crank throw unit, the 4th from left end to right end
Crank throw unit, the 5th crank throw unit, the 6th crank throw unit, the 7th crank throw unit and the 8th crank throw unit, from left end along described
The axial line of ontology is watched, and the followed order by ten two points along clockwise direction is the first crank throw unit, institute
State the 7th crank throw unit, the third crank throw unit, the 5th crank throw unit, the 8th crank throw unit, second song
Turn unit, the 6th crank throw unit, the 4th crank throw unit, and the first crank throw unit, the 7th crank throw unit,
The third crank throw unit, the 5th crank throw unit, the 8th crank throw unit, the second crank throw unit, the described 6th
Crank throw unit, the 4th crank throw unit are distributed uniformly and circumferentially.
2. the balanced structure of engine crankshaft as described in claim 1, which is characterized in that each crank throw unit includes connecting
Bar axle journal and the crank throw and balance weight for being symmetricly set on the rod journal both ends have on each crank throw installation flat
Face, each mounting plane is to install one piece of balance weight.
3. the balanced structure of engine crankshaft as claimed in claim 2, which is characterized in that from left end along the axle center of the ontology
Line viewing, the first crank throw and balance weight, the second crank throw and balance weight, the 7th crank throw and balance weight, the 8th crank throw and balance weight, the
Zigzag turns and balance weight, the tenth crank throw and balance weight, the 15th crank throw and balance weight, every piece of the 16th crank throw and balance weight it is flat
The center line for the crank throw that the center line of weighing apparatus block is all installed with it counterclockwise deflects 11.35 °.
4. the balanced structure of engine crankshaft as claimed in claim 3, which is characterized in that first crank throw and balance weight,
Second crank throw and balance weight, the 7th crank throw and balance weight, the 8th crank throw and balance weight, the zigzag turn and
Balance weight, the tenth crank throw and balance weight, the 15th crank throw and balance weight and the 16th crank throw and balance weight
Balance weight shape and weight it is all the same.
5. the balanced structure of engine crankshaft as claimed in claim 2, which is characterized in that from left end along the axle center of the ontology
Line viewing, third crank throw and balance weight, the 4th crank throw and balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance
The center line for the crank throw that the center line of every piece of balance weight of block is all installed with it deflects 22.5 ° toward the clockwise direction.
6. the balanced structure of engine crankshaft as claimed in claim 5, which is characterized in that the third crank throw and balance weight,
The balance weight of 4th crank throw and balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance weight
Shape and weight are all the same.
7. the balanced structure of engine crankshaft as claimed in claim 6, which is characterized in that from left end along the axle center of the ontology
Line viewing, the 5th crank throw and balance weight, the 6th crank throw and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance
The center line for the crank throw that the center line of every piece of balance weight of block is all installed with it counterclockwise deflects 22.5 °.
8. the balanced structure of engine crankshaft as claimed in claim 7, which is characterized in that the 5th crank throw and balance weight,
The balance weight of 6th crank throw and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance weight
Shape and weight are all the same.
9. the balanced structure of engine crankshaft as claimed in claim 8, which is characterized in that the third crank throw and balance weight,
The balance weight of 4th crank throw and balance weight, the 13rd crank throw and balance weight, the 14th crank throw and balance weight
Quality be a1 and its mass center to the distance of the rotation center of the crankshaft be b1；5th crank throw and balance weight, described
The quality of the balance weight of six crank throws and balance weight, the 11st crank throw and balance weight, the 12nd crank throw and balance weight is equal
Distance for the rotation center of a2 and its mass center to the crankshaft is b2, and a1 × b1 × 5=a2 × b2 × 3.
10. the balanced structure of engine crankshaft as described in claim 1, which is characterized in that further include belt pulley installation the diameter of axle,
Timing gears install axle journal, the first trunnion, the second trunnion, third trunnion, the 4th trunnion, the 5th trunnion, the 6th
Trunnion, the 7th trunnion, the 8th trunnion, the 9th trunnion, the Rear oil seal sealing diameter of axle and flywheel install the diameter of axle；The skin
The belt wheel installation diameter of axle is located at the left end of the crankshaft, and the timing gears installation axle journal and the belt pulley installation diameter of axle are coaxial
Heart connection, first trunnion and the timing gears install the concentric connection of axle journal, and second trunnion is located at described
Between first crank throw unit and the second crank throw unit, the third trunnion is located at the second crank throw unit and described
Between three crank throw units, the 4th trunnion is described between the third crank throw unit and the 4th crank throw unit
For 5th trunnion between the 4th crank throw unit and the 5th crank throw unit, the 6th trunnion is located at described the
Between five crank throw units and the 6th crank throw unit, the 7th trunnion is located at the 6th crank throw unit and the described 7th
Between crank throw unit, the 8th trunnion is between the 7th crank throw unit and the 8th crank throw unit, and described
Nine trunnions are located between the 8th crank throw unit and the Rear oil seal sealing diameter of axle, and the flywheel installation diameter of axle is located at most right
End, and the concentric connection of the diameter of axle is sealed with the Rear oil seal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204562.6U CN209483868U (en) | 2019-02-15 | 2019-02-15 | The balanced structure of engine crankshaft |
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| CN201920204562.6U CN209483868U (en) | 2019-02-15 | 2019-02-15 | The balanced structure of engine crankshaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611512A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | The balanced structure of engine crankshaft |
| CN112343730A (en) * | 2020-11-03 | 2021-02-09 | 上海齐耀动力技术有限公司 | Horizontal opposed U-shaped low-vibration heat engine transmission mechanism and heat engine |
-
2019
- 2019-02-15 CN CN201920204562.6U patent/CN209483868U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611512A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | The balanced structure of engine crankshaft |
| CN109611512B (en) * | 2019-02-15 | 2023-08-01 | 广西玉柴机器股份有限公司 | Balance structure of engine crankshaft |
| CN112343730A (en) * | 2020-11-03 | 2021-02-09 | 上海齐耀动力技术有限公司 | Horizontal opposed U-shaped low-vibration heat engine transmission mechanism and heat engine |
| CN112343730B (en) * | 2020-11-03 | 2023-08-29 | 上海齐耀动力技术有限公司 | Horizontally opposed U-shaped low-vibration hot air engine transmission mechanism and hot air engine |
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