CN209523989U - 20 cylinder diesel crankshaft of V-type - Google Patents
20 cylinder diesel crankshaft of V-type Download PDFInfo
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- CN209523989U CN209523989U CN201920204578.7U CN201920204578U CN209523989U CN 209523989 U CN209523989 U CN 209523989U CN 201920204578 U CN201920204578 U CN 201920204578U CN 209523989 U CN209523989 U CN 209523989U
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- cylinder
- rod journal
- crank throw
- crank
- crankshaft
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Abstract
The utility model discloses a kind of 20 cylinder diesel crankshafts of V-type.The 20 cylinder diesel crankshaft of V-type has ten crank throws, and in terms of the front end of crankshaft, in the clockwise direction, the rod journal of the first crank throw and the rod journal of the tenth crank throw are axially aligned；The rod journal of the rod journal and the 4th crank throw of 7th crank throw is axially aligned, it and with the angle of the rod journal of the first crank throw is 72 degree, the rod journal that the rod journal of second crank throw is turned with zigzag is axially aligned, it and with the angle of the rod journal of the 7th crank throw is 72 degree, the rod journal of the rod journal and the 5th crank throw of 6th crank throw is axially aligned, it and with the angle of the rod journal of the second crank throw is 72 degree, the rod journal of third crank throw and the rod journal of the 8th crank throw are axially aligned, and are 72 degree with the angle of the rod journal of the 6th crank throw；The 20 cylinder diesel crankshaft of V-type can be effectively reduced the torsional oscillation performance of crankshaft, and improve crankshaft strength and Lubrication Film Thickness.
Description
Technical field
The utility model is about engine art, especially with regard to a kind of 20 cylinder diesel crankshaft of V-type.
Background technique
Current diesel engine is all improving its power density, reduces volume, each components are just needed in outer dimension thus
In the case where small as far as possible, load big as far as possible is born, the reinforcing as the directly crankshaft of transmission diesel powered is particularly important
The crankshaft strength and torsional oscillation performance of existing high-power V-shaped 20 cylinder diesel (90 degree) are poor, unbearable bigger
Explosion pressure.
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 simple and reasonable 20 cylinder diesel crankshaft of V-type, 20 cylinders of V-type
Crankshaft of diesel engine can be effectively reduced the torsional oscillation performance of crankshaft, and improve crankshaft strength and Lubrication Film Thickness, so that diesel oil
Machine crankshaft is able to bear higher explosion pressure.
To achieve the above object, the utility model provides a kind of 20 cylinder diesel crankshaft of V-type, comprising: trunnion, connecting rod
Axle journal, crank arm and balance weight, the trunnion are mounted on cylinder body, and the rod journal is connect with crank pin end pore, described
Trunnion and rod journal are connect with the two sides of crank arm respectively, one trunnion, a rod journal and a crank
Arm forms a crank throw；The 20 cylinder diesel crankshaft of V-type has ten crank throws, in terms of the front end of crankshaft, in the clockwise direction,
The rod journal of first crank throw and the rod journal of the tenth crank throw are axially aligned；The rod journal of 7th crank throw and the 4th crank throw
Rod journal is axially aligned, and is 72 degree with the angle of the rod journal of the first crank throw, the rod journal of the second crank throw and the 9th
The rod journal of crank throw is axially aligned, and is 72 degree with the angle of the rod journal of the 7th crank throw, the rod journal of the 6th crank throw
It is axially aligned with the rod journal of the 5th crank throw, and is 72 degree with the angle of the rod journal of the second crank throw, the company of third crank throw
Bar axle journal and the rod journal of the 8th crank throw are axially aligned, and are 72 degree with the angle of the rod journal of the 6th crank throw；The V-type 20
The single-row firing order of cylinder diesel crankshaft is successively are as follows: the first cylinder, third cylinder, the 6th cylinder, the second cylinder, the 7th cylinder, the tenth cylinder,
Eight cylinders, the 5th cylinder, the 9th cylinder, the 4th cylinder, uniform 72 degree of ignitions.
In a preferred embodiment, the center of trunnion offers the first axially extending lightening hole, this first subtracts
Repeated hole be it is cylindric, the centre of first lightening hole is provided with ribs.
In a preferred embodiment, the second lightening hole is offered in rod journal, which runs through connecting rod
The left and right sides end face of axle journal.
In a preferred embodiment, the second lightening hole is arc.
In a preferred embodiment, the ratio of the diameter of trunnion and cylinder diameter is 0.91~1.1；The rod journal
Diameter and cylinder diameter ratio be 0.76~0.8；The thickness of the crank arm and the ratio of cylinder diameter are as follows: 0.21~0.24；The cylinder heart
Away from being 1.3~1.5 with the ratio of cylinder diameter, the radius of the balance weight and the ratio of stroke are 0.9-1.
Compared with prior art, 20 cylinder diesel crankshaft of V-type according to the present utility model has the following beneficial effects: the V
20 cylinder diesel crankshaft of type is equipped with suitable firing order, can be effectively reduced the torsional oscillation performance of crankshaft, and improves crankshaft strength
And Lubrication Film Thickness improves engine operational reliability so that crankshaft of diesel engine is able to bear higher explosion pressure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the 20 cylinder diesel crankshaft of V-type of the utility model first embodiment.
Fig. 2 is the partial structural diagram according to the 20 cylinder diesel crankshaft of V-type of the utility model first embodiment.
Fig. 3 is the crank throw distribution schematic diagram according to the 20 cylinder diesel crankshaft of V-type of the utility model first embodiment.
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, specifically including according to the 20 cylinder diesel crankshaft of V-type of the preferred embodiment in the utility model: main shaft
Neck 11, rod journal 12, crank arm 13 and balance weight.Wherein, trunnion 11 is installed on cylinder body, rod journal 12 and connecting rod
Big end hole connection, connecting rod small end hole connect with steam-cylinder piston, trunnion 11 and rod journal 12 two sides with crank arm 13 respectively
Connection, 11, rod journals 12 of a trunnion and a crank arm 13 constitute a crank throw.20 cylinder diesel of V-type
Crankshaft tool is equipped with suitable firing order, can be effectively reduced there are six crank throw by the design to six crank throw major parameters
The torsional oscillation performance of crankshaft, and improve crankshaft strength and Lubrication Film Thickness so that crankshaft of diesel engine be able to bear it is higher quick-fried
Send out pressure.
Specifically, engine crankshaft is the main rotary gadget of engine, after loading onto connecting rod, can accept the upper and lower of connecting rod
(reciprocal) movement becomes to recycle (rotation) movement, is an important parts on engine.The rotation of crankshaft is engine
Power source.It is also the driving source of entire mechanical system.
Trunnion 11 is hollow structure, i.e. the center of trunnion 11 offers the first axially extending lightening hole, it is preferred that
First lightening hole is cylindric.The centre of first lightening hole is provided with ribs.
Rod journal 12 is hollow structure, i.e., the second lightening hole is offered in rod journal, and second lightening hole is through company
The left and right sides end face of bar axle journal, it is preferred that second lightening hole is arc.
One end of trunnion 11 and one end of rod journal 12 connect with the two sides of crank arm 13 constitute crank throw respectively.
The centrifugal force and torque that balance weight is generated for balance crankshaft rod journal and crank arm, make crankshaft operation steadily and
The load that trunnion bearing shell is born is reduced, so that engine steadily operates, reduces trunnion load.There are two types of balance weights, a kind of
It is that one is made with crankshaft；Another kind is formed into individually, then is screwed on crank.Latter is called assembled balance
Block, engine generally use the balance weight of integral type.
(1) main design parameters of crank throw:
As shown in Fig. 2, the diameter d1/D (cylinder diameter) of trunnion is 0.91~1.1, crankshaft strength can be effectively improved.
The diameter d2/D (cylinder diameter) of rod journal is 0.76~0.8, effectively improves the rigidity of crankshaft strength and rod journal,
Prevent the axle journal of two cylinders from deforming.
The thickness H/D (cylinder diameter) of crank arm is 0.21~0.24, effectively diminution cylinder pintch, reduces motor length.
Cylinder centre line spacing L/D (cylinder diameter) is 1.3~1.5, effectively diminution cylinder pintch, guarantees the compactedness of engine.
The radius P/S (stroke) of balance weight is 0.9-1, and the oil film that can be effectively improved bearing journal is horizontal.
(2) the corresponding firing order of crankshaft structure
As shown in figure 3, all cylinders are divided into two groups by 20 cylinder diesel of V-type, adjacent cylinder is arranged with certain angle
Together, two groups of cylinders are made to be formed with the plane of an angle, cylinder is in the shape of the letter V from the side.The height of 20 cylinder diesel of V-type
Small with length dimension, arrangement is got up more convenient.It is convenient for improving discharge capacity and power by expanding cylinder bore and be suitble to
In higher number of cylinders.The 20 cylinder diesel crankshaft of V-type has ten crank throws, in terms of the front end of crankshaft, in the clockwise direction,
The rod journal 1 and the rod journal of the tenth crank throw of first crank throw are axially aligned；The rod journal 7 and the 4th crank throw of 7th crank throw
Rod journal axially align, and be 72 degree with the angle of the rod journal of the first crank throw 1, the rod journal 2 of the second crank throw with
The rod journal that zigzag turns is axially aligned, and is 72 degree with the angle of the rod journal 7 of the 7th crank throw, the connecting rod of the 6th crank throw
Axle journal 6 and the rod journal of the 5th crank throw are axially aligned, and are 72 degree with the angle of the rod journal of the second crank throw 2, and third is bent
The rod journal 3 and the rod journal of the 8th crank throw turned is axially aligned, and is 72 with the angle of the rod journal 6 of the 6th crank throw
Degree.
The single-row firing order of the 20 cylinder diesel crankshaft of V-type is successively are as follows: the first cylinder, third cylinder, the 6th cylinder, the second cylinder,
7th cylinder, the tenth cylinder, the 8th cylinder, the 5th cylinder, the 9th cylinder, the 4th cylinder, uniform 72 degree of ignitions, suitable be under fire are conducive to shafting torsion
The improvement for performance of shaking.
To sum up, which is equipped with suitable firing order, can be effectively reduced the torsional oscillation performance of crankshaft,
And crankshaft strength and Lubrication Film Thickness are improved, so that crankshaft of diesel engine is able to bear higher explosion pressure, raising is started
Machine operational reliability.
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 (5)
1. a kind of 20 cylinder diesel crankshaft of V-type characterized by comprising trunnion, rod journal, crank arm and balance weight, institute
Trunnion is stated to be mounted on cylinder body, the rod journal is connect with crank pin end pore, the trunnion and rod journal respectively with
The two sides of crank arm connect, and one trunnion, a rod journal and a crank arm form a crank throw；The V-type 20
Cylinder diesel crankshaft has ten crank throws, in terms of the front end of crankshaft, in the clockwise direction, the rod journal of the first crank throw and the
The rod journal of ten crank throws is axially aligned；The rod journal of the rod journal and the 4th crank throw of 7th crank throw is axially aligned, and with
The angle of the rod journal of first crank throw is 72 degree, and the rod journal that rod journal and the zigzag of the second crank throw turn is axially right
It together, and with the angle of the rod journal of the 7th crank throw is 72 degree, the rod journal of the 6th crank throw and the rod journal of the 5th crank throw
It axially aligns, and is 72 degree with the angle of the rod journal of the second crank throw, the company of the rod journal of third crank throw and the 8th crank throw
Bar axle journal is axially aligned, and is 72 degree with the angle of the rod journal of the 6th crank throw；The single-row hair of the 20 cylinder diesel crankshaft of V-type
Fiery sequence is successively are as follows: the first cylinder, third cylinder, the 6th cylinder, the second cylinder, the 7th cylinder, the tenth cylinder, the 8th cylinder, the 5th cylinder, the 9th cylinder,
4th cylinder, uniform 72 degree of ignitions.
2. 20 cylinder diesel crankshaft of V-type as described in claim 1, which is characterized in that the center of the trunnion offers axis
To the first lightening hole of extension, first lightening hole be it is cylindric, the centre of first lightening hole is provided with ribs.
3. 20 cylinder diesel crankshaft of V-type as described in claim 1, which is characterized in that offer second in the rod journal
Lightening hole, second lightening hole run through the left and right sides end face of rod journal.
4. 20 cylinder diesel crankshaft of V-type as claimed in claim 3, which is characterized in that second lightening hole is arc.
5. 20 cylinder diesel crankshaft of V-type as claimed in claim 3, which is characterized in that the diameter of the trunnion and cylinder diameter
Ratio is 0.91~1.1；The diameter of the rod journal and the ratio of cylinder diameter are 0.76~0.8；The thickness of the crank arm with
The ratio of cylinder diameter are as follows: 0.21~0.24；The ratio of cylinder centre line spacing and cylinder diameter is 1.3~1.5, the radius of the balance weight and stroke
Ratio is 0.9-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204578.7U CN209523989U (en) | 2019-02-15 | 2019-02-15 | 20 cylinder diesel crankshaft of V-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204578.7U CN209523989U (en) | 2019-02-15 | 2019-02-15 | 20 cylinder diesel crankshaft of V-type |
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| Publication Number | Publication Date |
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| CN209523989U true CN209523989U (en) | 2019-10-22 |
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| CN201920204578.7U Active CN209523989U (en) | 2019-02-15 | 2019-02-15 | 20 cylinder diesel crankshaft of V-type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630536A (en) * | 2019-02-15 | 2019-04-16 | 广西玉柴机器股份有限公司 | 20 cylinder diesel crankshaft of V-type |
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2019
- 2019-02-15 CN CN201920204578.7U patent/CN209523989U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630536A (en) * | 2019-02-15 | 2019-04-16 | 广西玉柴机器股份有限公司 | 20 cylinder diesel crankshaft of V-type |
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