CN205841467U - The crankshaft structure of three-cylinder engine in upright arrangement - Google Patents
The crankshaft structure of three-cylinder engine in upright arrangement Download PDFInfo
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- CN205841467U CN205841467U CN201620836364.8U CN201620836364U CN205841467U CN 205841467 U CN205841467 U CN 205841467U CN 201620836364 U CN201620836364 U CN 201620836364U CN 205841467 U CN205841467 U CN 205841467U
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- crank throw
- bent axle
- cylinder engine
- upright arrangement
- central axis
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Abstract
The utility model discloses the crankshaft structure of a kind of three-cylinder engine in upright arrangement, the two ends of bent axle are respectively free end and power take-off, along free end to power take-off direction projection, it is the first crank throw, the second crank throw and the 3rd crank throw the most successively, angle between first crank throw and the second crank throw and between the second crank throw and the 3rd crank throw is 120 °, and the firing order of bent axle is 123.Firing order of the present utility model advantageously reduces the torsional oscillation amplitude of crankshaft system, improves the performance of the intensity of bent axle, torsional oscillation and intensity.
Description
Technical field
This utility model relates to engine art, particularly to the crankshaft structure of a kind of three-cylinder engine in upright arrangement.
Background technology
The torsional oscillation amplitude of the bent axle of existing three-cylinder engine in upright arrangement is relatively big, and the strength character of bent axle is poor, and
The supply capability of three cylinder crankshafts is poor, oil duct difficult arrangement and be not easy processing.
The information being disclosed in this background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or imply in any form this information structure existing well known to persons skilled in the art
Technology.
Utility model content
The purpose of this utility model is to provide the crankshaft structure of a kind of three-cylinder engine in upright arrangement, thus overcomes existing song
The shortcoming that axial torsional vibration amplitude is big and strength character is poor.
For achieving the above object, this utility model provides the crankshaft structure of a kind of three-cylinder engine in upright arrangement, the two of bent axle
End is respectively free end and power take-off, along free end to power take-off direction projection, is the most successively
One crank throw, the second crank throw and the 3rd crank throw, between the first crank throw and the second crank throw and between the second crank throw and the 3rd crank throw
Angle is 120 °, and the firing order of bent axle is 1-2-3.
Preferably, in technique scheme, each crank arm of bent axle is symmetrical about the centrage of bent axle, the first crank throw and
The lower end of each crank arm of the 3rd crank throw is provided with the balancing weight of sector, the central axis of crank arm and the central axis of balancing weight
Between angle be 0 °～45 °.
Preferably, in technique scheme, the outer circumference surface of each rod journal is provided with the first oil outlet, each crank throw
The upper outer circumference surface near the trunnion of free end is provided with the second oil outlet, the first oil outlet and corresponding second oil outlet it
Between be provided with passage, form oil duct.
Preferably, in technique scheme, the angle between central axis and the central axis of balancing weight of crank arm is
30°。
Preferably, in technique scheme, the central axis of bent axle is flat with what the central axis of each rod journal was formed
Face and corresponding oil way cross.
Preferably, in technique scheme, the projection on the radial section of bent axle of each oil duct and corresponding crank arm
Central axis between angle be 0 °～60 °.
Preferably, in technique scheme, the projection on the radial section of bent axle of each oil duct and corresponding crank arm
Central axis between angle be 32.32 °.
Preferably, in technique scheme, the center of circle of each second oil outlet and the radial section of corresponding trunnion it
Between line and the central axis of corresponding crank arm between angle be 45 °～90 °.
Preferably, in technique scheme, the center of circle of each second oil outlet and the radial section of corresponding trunnion it
Between line and the central axis of corresponding crank arm between angle be 19 °.
Preferably, in technique scheme, the first oil outlet is positioned at the axial centre of corresponding rod journal, and second goes out
Oilhole is positioned at the axis centre of corresponding trunnion.
Compared with prior art, this utility model has the advantages that
Firing order of the present utility model advantageously reduces the torsional oscillation amplitude of crankshaft system, improve the intensity of bent axle, torsional oscillation and
The performance of intensity；Crank arm and the lightweight being designed with beneficially bent axle of balancing weight, reduce the moment of resistance of bent axle, improves bent axle
Dynamic balancing rate；The convenient processing of the layout of oil duct, and can sufficient lubrication base bearing and the connecting-rod bearing, improve the profit of the bearing of journals
Sliding effect.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the crankshaft structure according to three-cylinder engine in upright arrangement of the present utility model.
Fig. 2 is the crank throw layout drawing of the bent axle according to three-cylinder engine in upright arrangement of the present utility model.
Fig. 3 is the front view according to bent axle of the present utility model.
Fig. 4 is the fragmentary front view according to bent axle of the present utility model.
Fig. 5 is the E-E view of Fig. 4.
Fig. 6 is the F-F view of Fig. 4.
Main Reference Numerals illustrates:
1-bent axle, 11-the first crank throw, 111-first connecting rod axle journal, 112-central axis, 113-the first trunnion, 12-
Two crank throws, 121-second connecting rod axle journal, 13-the 3rd crank throw, 131-third connecting rod axle journal, 14-oil duct, 141-the first oil outlet,
142-the second oil outlet, 16-trunnion, 17-horizontal axis, 18-free end, 19-power take-off, 2-balancing weight, 21-center
Axis.
Detailed description of the invention
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is described in detail, it is to be understood that this practicality
Novel protection domain is not limited by detailed description of the invention.
Explicitly indicating that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or it becomes
Change and such as " comprising " or " including " etc. will be understood to comprise stated element or ingredient, and do not get rid of other yuan
Part or other ingredient.
As it is shown in figure 1, include song according to the crankshaft structure of the three-cylinder engine in upright arrangement of this utility model detailed description of the invention
Axle 1 and 4 balancing weights 2.
As Figure 1-4, the two ends of bent axle 1 are respectively free end 18 and power take-off 19, along free end 18 to power
Outfan 19 direction projection, is the first crank throw the 11, second crank throw 12 and the 3rd crank throw 13 the most successively.Such as Fig. 2 institute
Show, centered by the trunnion 16 of bent axle, between the first crank throw 11 and the second crank throw 12 and the second crank throw 12 and the 3rd crank throw
Angle between 13 is 120 °.Specifically, as shown in Figures 3 and 4, along free end 18 to power take-off 19 direction projection,
If the first crank throw 11 (12 directions) straight up, then the second crank throw 12 tilts (4 directions), the 3rd crank throw 13 to the right
Inclined downward (8 directions) to the left.The firing order of bent axle is 1-2-3.
As Figure 1-4, the shape of all crank arms of bent axle is identical, and crank arm is about the centrage pair of bent axle 1
Claim.The lower end of each crank arm of the first crank throw 11 and the 3rd crank throw 13 is provided with balancing weight 2, balancing weight 2 in sector, crank arm
Angle between the central axis of central axis and balancing weight 2 is 0 °～45 °.As an embodiment, as it is shown in figure 5, with
As a example by the crank arm of one crank throw, the angle between central axis 112 and the central axis 21 of balancing weight 2 of crank arm is 30 °.By
Being symmetrical parts in crank arm and balancing weight, this is conducive to the lightweight of bent axle, reduces the moment of resistance of bent axle, improves bent axle
Dynamic balancing rate.
As Fig. 1,3-4, shown in 6, the outer circumference surface of each rod journal is provided with the first oil outlet 141, on each crank throw
Outer circumference surface near the trunnion of free end 18 is provided with the second oil outlet 142, and the first oil outlet 141 goes out with corresponding second
It is provided with passage between oilhole 142, forms oil duct 14.As it is shown in figure 1, the central axis of the trunnion of bent axle 1 and each pitman shaft
The plane that the central axis of neck is formed is intersected with corresponding oil duct 14.As a example by the oil duct of the first crank throw, from the point of view of Fig. 1 and 6,
Being Y-axis for X-axis, vertical direction in the horizontal direction, fore-and-aft direction is in the three-coordinate that Z axis is formed, the central axis of bent axle 1 with
The plane that the central axis of the rod journal of the first crank throw 11 is formed is y-z plane, and the first oil outlet 141 is positioned at y-z plane
Front side, the second oil outlet is positioned at the rear side of y-z plane, and the oil duct of the first crank throw intersects with y-z plane.
Preferably, between each oil duct projection and central axis of corresponding crank arm on the radial section of bent axle
Angle is 0 °～60 °.Line between each second oil outlet and the center of circle of the radial section of corresponding trunnion is with corresponding
Angle between the central axis of crank arm is 45 °～90 °.
As an embodiment, as shown in figs. 1 and 6, as a example by the oil duct of the first crank throw, the radial section of bent axle is F-F
Cross section, between oil duct projection (oil duct 14 shown in dotted line) and the central axis 112 of corresponding crank arm on F-F cross section
Angle is 32.32 °.The radial section of the trunnion 113 of the first crank throw is F-F cross section, the second oil outlet 142 and corresponding main shaft
The angle between line and the horizontal axis 17 of trunnion 113 between the center of circle of the radial section of neck 113 is 19 °, namely
Say between this line and the central axis 112 (being equivalent to the vertical axis of trunnion 113 in this position) of corresponding crank arm
Angle is 71 ° (90 °-19 °).
Preferably, the first oil outlet 141 is positioned at the axial centre of corresponding rod journal, and the second oil outlet 142 is positioned at
At the axis centre of corresponding trunnion.
Firing order of the present utility model advantageously reduces the torsional oscillation amplitude of crankshaft system, improve the intensity of bent axle, torsional oscillation and
The performance of intensity；Crank arm and the lightweight being designed with beneficially bent axle of balancing weight, reduce the moment of resistance of bent axle, improves bent axle
Dynamic balancing rate；The convenient processing of the layout of oil duct, and can sufficient lubrication base bearing and the connecting-rod bearing, improve the profit of the bearing of journals
Sliding effect.
The aforementioned description to specific illustrative embodiment of the present utility model illustrates that and the purpose of illustration.These
Describe and be not wishing to be defined to this utility model disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
A lot of changes and change.The purpose selected exemplary embodiment and describe is to explain certain principles of the present utility model
And reality application, so that those skilled in the art is capable of and utilizes various different example of the present utility model
Property embodiment and various different selection and change.Scope of the present utility model be intended to by claims and etc. similar shape
Formula is limited.
Claims (10)
1. a crankshaft structure for three-cylinder engine in upright arrangement, the two ends of bent axle are respectively free end and power take-off, its feature
It is, along described free end to described power take-off direction projection, is the first crank throw, the second crank throw the most successively
With the 3rd crank throw, between described first crank throw and described second crank throw and between described second crank throw and described 3rd crank throw
Angle is 120 °, and the firing order of described bent axle is 1-2-3.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 1, it is characterised in that each song of described bent axle
Shaft arm is symmetrical about the centrage of described bent axle, and the lower end of each crank arm of described first crank throw and described 3rd crank throw is provided with
Fan-shaped balancing weight, the angle between central axis and the central axis of described balancing weight of described crank arm is 0 °～45 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 1 and 2, it is characterised in that each rod journal
Outer circumference surface be provided with the first oil outlet, on each crank throw, the outer circumference surface of trunnion near described free end is provided with the
Two oil outlets, are provided with passage between described first oil outlet with corresponding described second oil outlet, form oil duct.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 2, it is characterised in that the center of described crank arm
Angle between the central axis of axis and described balancing weight is 30 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 3, it is characterised in that the central shaft of described bent axle
Line and the plane that the central axis of each rod journal is formed and corresponding described oil way cross.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 5, it is characterised in that each described oil duct is in institute
The angle stated between projection and the central axis of corresponding crank arm on the radial section of bent axle is 0 °～60 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 6, it is characterised in that each described oil duct is in institute
The angle stated between projection and the central axis of corresponding crank arm on the radial section of bent axle is 32.32 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 6, it is characterised in that each described second fuel-displaced
Line between hole with the center of circle of the radial section of corresponding trunnion and the angle between the central axis of corresponding crank arm
It it is 45 °～90 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 8, it is characterised in that each described second fuel-displaced
Line between hole with the center of circle of the radial section of corresponding trunnion and the angle between the central axis of corresponding crank arm
It it is 19 °.
The crankshaft structure of three-cylinder engine in upright arrangement the most according to claim 3, it is characterised in that described first oil outlet
Being positioned at the axial centre of corresponding rod journal, described second oil outlet is positioned at the axis centre of corresponding trunnion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836364.8U CN205841467U (en) | 2016-08-04 | 2016-08-04 | The crankshaft structure of three-cylinder engine in upright arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836364.8U CN205841467U (en) | 2016-08-04 | 2016-08-04 | The crankshaft structure of three-cylinder engine in upright arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841467U true CN205841467U (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836364.8U Active CN205841467U (en) | 2016-08-04 | 2016-08-04 | The crankshaft structure of three-cylinder engine in upright arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015303A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of in-line three-cylinder engine |
-
2016
- 2016-08-04 CN CN201620836364.8U patent/CN205841467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015303A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Crankshaft structure of in-line three-cylinder engine |
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| GR01 | Patent grant |