CN209309113U - A kind of vehicle and its engine and engine crankshaft - Google Patents
A kind of vehicle and its engine and engine crankshaft Download PDFInfo
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- CN209309113U CN209309113U CN201822207589.9U CN201822207589U CN209309113U CN 209309113 U CN209309113 U CN 209309113U CN 201822207589 U CN201822207589 U CN 201822207589U CN 209309113 U CN209309113 U CN 209309113U
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- cydariform
- engine
- trunnion
- crankshaft
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Abstract
The utility model discloses a kind of engine crankshafts, the trunnion for being used to connect with engine cylinder body main bearing hole including several and several rod journals for being used to connect with engine link, trunnion and rod journal include the fillet area that transition is connect with crank arm and opposite cydariform area of the fillet area far from crank arm；In cydariform area, from the axial centerline position in both sides of the edge position to the cydariform area in cydariform area, the diameter of trunnion and the diameter of rod journal are gradually increased.Bending deformation quantity at Engine Crankshaft Journal is that two sides are high, intermediate low, low, the intermediate high cydariform area by setting two sides, deflection is made up using it, so that the gap between axle journal and bearing shell is roughly the same, bearing shell edge is avoided to contact with axle journal direct metal, repeatedly extrude abrasion, excessive, generation eccentric wear is carried so as to avoid the side of bearing shell.The invention also discloses a kind of engines including above-mentioned engine crankshaft and a kind of vehicle including above-mentioned engine.
Description
Technical field
The utility model relates to technical field of engines, more specifically to a kind of engine crankshaft.In addition, this reality
A kind of engine including above-mentioned engine crankshaft and a kind of vehicle including above-mentioned engine are further related to novel.
Background technique
Engine crankshaft is in-engine important component, bears the active force of connecting rod and is transformed into torque output,
And other attachmentes on engine is driven to work.
In order to guarantee the high-speed rotation of crankshaft, main bearing shell, crankshaft-link rod are equipped between main bearing journal and main bearing hole of cylinder
Connecting rod bearing shell is equipped between axle journal and crank pin end pore.Due to the gas inertia power and reciprocal inertia force by centrifugal force, mechanical periodicity
Collective effect, during the motion, crankshaft is generated bending Light deformation by Moment, due to the change at the axle journal fillet
Shape amount is greater than in the middle part of axle journal, therefore bearing shell edge is easier to contact with axle journal direct metal, repeatedly extrudes abrasion, leads to the side of bearing shell
Carry excessive, eccentric wear is serious.
In the prior art, mainly extend the service life of bearing shell by strengthening axle journal and strengthening bearing shell mode, still
It is easier to due to not can solve bearing shell edge and the problem of journal contact, cannot tackle the problem at its root, can only prolong as far as possible
The service life of long bearing shell.
In conclusion bearing shell side how to be avoided to carry excessive and eccentric wear, being that current those skilled in the art are urgently to be resolved is asked
Topic.
Utility model content
In view of this, can effectively avoid bearing shell side from carrying the purpose of the utility model is to provide a kind of engine crankshaft
Big and eccentric wear.
The utility model also provides a kind of engine including above-mentioned engine crankshaft and a kind of including above-mentioned engine
Vehicle.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of engine crankshaft, the trunnion for being used to connect with engine cylinder body spindle hole including several and several use
In the rod journal connecting with engine link, the trunnion and the rod journal include the circle that transition is connect with crank arm
Angular region and cydariform area relative to the fillet area far from the crank arm；In the cydariform area, from the cydariform area
The diameter of the axial centerline position in both sides of the edge position to the cydariform area, the diameter of the trunnion and the rod journal is equal
It is gradually increased.
Preferably, on the trunnion, cydariform area two sides described in the radius ratio at the cydariform area axial centerline position
Radius at marginal position is higher by 0.002mm-0.006mm.
Preferably, on the rod journal, cydariform area two described in the radius ratio at the cydariform area axial centerline position
Radius at side edge position is higher by 0.002mm-0.006mm.
Preferably, it on the trunnion and the rod journal, is additionally provided between the fillet area and the cydariform area
The isometric neck region that diameter length is consistent.
Preferably, oilhole is equipped on the trunnion and the rod journal.
Preferably, oblique oil duct is provided between the trunnion and the rod journal.
A kind of engine, including piston, cylinder body, oil cylinder and the connecting rod for connecting the crankshaft and the piston, the crankshaft
For crankshaft described in any of the above embodiments.
A kind of vehicle, including engine as described above.
The utility model provides a kind of engine crankshaft, and bearing shell side can effectively be avoided to carry excessive and eccentric wear.
The utility model provides a kind of engine crankshaft, including several are used to connect with engine cylinder body main bearing hole
Trunnion and several be used for rod journals for connect with engine link, trunnion and rod journal include and crank arm company
Take over the fillet area crossed and the cydariform area relative to fillet area far from crank arm.In cydariform area, from the two sides in cydariform area
The axial centerline position in edge position to cydariform area, the diameter and rod journal of trunnion are gradually increased.
In engine operation process, effect of the crankshaft by moment of flexure, deflection of the crankshaft journal at fillet is larger,
It is smaller far from the deflection at fillet, cydariform area is set on axle journal, and sets the shape that two sides are low, centre is high for cydariform area
Shape, can be using the shape in axle journal cydariform area to because the gap caused by deflection between axle journal and bearing shell unevenly carries out more
It mends, so that bearing shell edge is roughly the same with the gap of intermediate distance axle journal, therefore avoids bearing shell edge and axle journal direct metal
It contacts, repeatedly extrude abrasion, carry excessive, generation eccentric wear so as to avoid the side of bearing shell.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of the specific embodiment of engine crankshaft provided by the utility model；
Fig. 2 is the structural schematic diagram of the axle journal of the specific embodiment of engine crankshaft provided by Fig. 1.
In Fig. 1-2:
1 it is fillet area, 2 be isometric neck region, 3 be cydariform area, 4 be trunnion, 5 is rod journal.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of engine crankshaft, and bearing shell side can effectively be avoided to carry excessive and eccentric wear.
The utility model also provides a kind of engine including above-mentioned engine crankshaft and a kind of including above-mentioned engine
Vehicle.
Fig. 1-Fig. 2 is please referred to, Fig. 1 is the structural representation of the specific embodiment of engine crankshaft provided by the utility model
Figure, Fig. 2 are the structural schematic diagram of the axle journal of the specific embodiment of engine crankshaft provided by Fig. 1.
Engine crankshaft provided by the utility model, the master for being used to connect with engine cylinder body main bearing hole including several
Axle journal 4 and several rod journals 5 for being used to connect with engine link, trunnion 4 and rod journal 5 include connecting with crank arm
Take over the fillet area 1 crossed and the cydariform area 3 relative to fillet area 1 far from crank arm.Wherein, in cydariform area 3, from cydariform area
The axial centerline position in 3 both sides of the edge position to cydariform area 3, the diameter of trunnion 4 and the diameter of rod journal 5 gradually increase
Greatly.
Trunnion 4 is arranged between two crank arms, between crank arm and crankshaft front end or crank arm and crankshaft rear end
Between, it is connect for the main bearing hole with engine cylinder body, and be equipped between trunnion 4 and main bearing hole for guaranteeing main shaft
The main bearing shell of neck 4 carrying and lubrication.
Rod journal 5 is arranged between two crank arms, connect for the crank pin end pore with engine link, and
The connecting rod bearing shell for guaranteeing rod journal 5 carrying and lubrication is equipped between rod journal 5 and the crank pin end pore of engine link.
It is equipped with fillet area 1 between trunnion 4, rod journal 5 and crank arm, so as to the smooth transition of crankshaft diameter, is kept away
Exempt from the problems such as diameter of crankshaft mutates on a certain plane, stress is caused to concentrate.
The particular number that trunnion 4 and rod journal 5 are arranged, depending on the cylinder number of engine and the supporting form of crankshaft.
Cydariform area 3 is additionally provided on trunnion 4 and rod journal 5, cydariform area 3 is relative to fillet area 1 far from crank arm.
In cydariform area 3, from 3 both sides of the edge position of cydariform area to 3 axial centerline position of cydariform area, trunnion 4 and rod journal 5 it is straight
Diameter is gradually increased.
In cydariform area 3, the rule that journal diameter increases should be carried out according to the bending deformation curve for producing axle journal in practice
It determines.
Trunnion 4 is low with two sides in the cydariform area 3 on rod journal 5, intermediate height, under engine crankshaft working condition
The distribution for the Light deformation amount that moment of flexure generates is substantially opposite, thus can by bearing shell that the structure of itself generates Light deformation amount and
Axle journal gap is unbalanced to be made up.
In the present embodiment, it by the way that cydariform area 3 is arranged on trunnion 4 and rod journal 5, and sets cydariform area 3 to
Two sides are low, intermediate height, since the size of deflection when engine crankshaft bears moment of flexure deformation is that two sides are high, intermediate low, axis
Neck own form and deflection superposition, can make the gap between bearing shell and axle journal relatively uniform on axle journal axial direction, avoid
Bearing shell contacts with axle journal direct metal, repeatedly extrudes abrasion, carries excessive so as to avoid the side of bearing shell, generates eccentric wear.
The cydariform area 3 of trunnion 4 and rod journal 5, can be by form grinding wheel machine-shaping, therefore trunnion 4 and even
The processing of bar axle journal 5 is relatively simple, will not additionally increase a large amount of process time, influence production efficiency.
On the basis of the above embodiments, it in order to further weaken the eccentric wear between trunnion 4 and main bearing shell, can control
The radius at 3 both sides of the edge position of radius ratio cydariform area on trunnion 4 at 3 axial centerline position of cydariform area is higher by 0.002mm-
0.006mm。
The radius of the radius ratio both sides of the edge position of axial centerline position is higher by cydariform area 3 on control trunnion 4
On the one hand 0.002mm-0.006mm certain to the progress of the bending Light deformation amount of trunnion 4 can make up, on the other hand consider
Installation clearance requirement between trunnion 4 and main bearing shell.
In the present embodiment, the radius ratio both sides of the edge position of axial centerline position in the cydariform area 3 on trunnion 4 is controlled
Radius be higher by 0.002mm-0.006mm, taken into account the installation made up between Light deformation amount difference and trunnion 4 and main bearing shell and wanted
Ask, can be effectively prevented from main bearing shell side carry it is excessive, there is eccentric wear.
On the basis of the above embodiments, it in order to further weaken the eccentric wear between rod journal 5 and connecting rod bearing shell, can control
The radius at 3 both sides of the edge position of radius ratio cydariform area on rod journal 5 processed at 3 axial centerline position of cydariform area is higher by
0.002mm-0.006mm。
The radius of the radius ratio both sides of the edge position of axial centerline position is higher by cydariform area 3 on controls connecting rod axle journal 5
On the one hand 0.002mm-0.006mm certain to the progress of the bending Light deformation amount of rod journal 5 can make up, on the other hand examine
The installation clearance requirement between rod journal 5 and connecting rod bearing shell is considered.
In the present embodiment, on controls connecting rod axle journal 5 in cydariform area 3 axial centerline position radius ratio both sides of the edge position
Radius be higher by 0.002mm-0.006mm, taken into account the installation made up between Light deformation amount difference and rod journal 5 and connecting rod bearing shell
It is required that can be effectively prevented from, connecting rod bearing shell side load is excessive, eccentric wear occurs.
On the basis of the above embodiments, it is contemplated that the processing problems in cydariform area 3, on engine crankshaft, in trunnion 4
On rod journal 5, the isometric neck region 2 that diameter length is consistent can be additionally provided between fillet area 1 and cydariform area 3.
Isometric neck region 2 is set between fillet area 1 and cydariform area 3, it is contemplated that the problem of processing space, is conducive to cydariform
The processing in area 3.
Meanwhile 1 close region of fillet area is avoided, and 1 close region of fillet area bending deformation quantity on axle journal is maximum, has
Bending deformation quantity is made up conducive to the structure using cydariform area 3.
Preferably, 1mm can be set by the length in 4 Shang Deng axle journal area 2 of trunnion, it is easy to process, and can be to avoiding
Main bearing shell side carries excessive and eccentric wear and plays good effect.
Preferably, 1mm can be set by the length in 5 Shang Deng axle journal area 2 of rod journal, it is easy to process, and can be to keeping away
Exempt from connecting rod bearing shell side and carry excessive and eccentric wear to play good effect.
It on the basis of the above embodiments, can be on trunnion 4 and rod journal 5 in order to be lubricated to axle journal
It is provided with oilhole.
The position of oilhole arrangement needs to consider two sides of influence of lubrication oil supply sufficiently with decrease to crankshaft fatigue strength
Face.
Preferably, the oilhole on rod journal 5 can be set in low load region, to weaken the shadow to crankshaft fatigue strength
It rings.
On the basis of the above embodiments, in order to realize the lubrication to connecting rod, can trunnion 4 and rod journal 5 it
Between be provided with for the oblique oil duct to connecting rod fuel feeding, can by machine oil from trunnion 4 oilhole import rod journal 5 on oil
Hole, the connecting rod connected hence for rod journal 5 are lubricated.
In addition to above-mentioned engine crankshaft, it includes engine crankshaft disclosed in above-described embodiment that the utility model, which also provides a kind of,
Engine, the engine include piston, cylinder body, crankshaft and connect crankshaft and piston connecting rod, crankshaft be above-described embodiment
Disclosed engine crankshaft, refer to the prior art for the structure of other each sections of the engine, and repeats no more herein.
In addition, the utility model additionally provides a kind of vehicle including engine disclosed in above-described embodiment, the vehicle
Refer to the prior art for the structure of other each sections, and repeats no more herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Vehicle provided by the utility model and its engine and engine crankshaft are described in detail above.Herein
In apply specific case the principles of the present invention and embodiment be expounded, the explanation of above embodiments is only used
The method and its core concept of the utility model are understood in help.It should be pointed out that for those skilled in the art
For, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these
Improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (8)
1. a kind of engine crankshaft, which is characterized in that the main shaft for being used to connect with engine cylinder body main bearing hole including several
Neck (4) and several rod journals (5) for being used to connect with engine link, the trunnion (4) and the rod journal (5)
Cydariform area including connecting the fillet area (1) of transition with crank arm and relative to the fillet area (1) far from the crank arm
(3)；In the cydariform area (3), from the both sides of the edge position of the cydariform area (3) to the axial centerline of the cydariform area (3)
Position, the diameter of the trunnion (4) and the diameter of the rod journal (5) are gradually increased.
2. engine crankshaft according to claim 1, which is characterized in that on the trunnion (4), the cydariform area
(3) radius at cydariform area (3) both sides of the edge position described in the radius ratio at axial centerline position is higher by 0.002mm-
0.006mm。
3. engine crankshaft according to claim 2, which is characterized in that on the rod journal (5), the cydariform area
(3) radius at cydariform area (3) both sides of the edge position described in the radius ratio at axis midline position is higher by 0.002mm-
0.006mm。
4. engine crankshaft according to claim 1-3, which is characterized in that in the trunnion (4) and described
On rod journal (5), the equal axle journals that diameter length is consistent are additionally provided between the fillet area (1) and the cydariform area (3)
Area (2).
5. engine crankshaft according to claim 4, which is characterized in that the trunnion (4) and the rod journal (5)
On be equipped with oilhole.
6. engine crankshaft according to claim 5, which is characterized in that the trunnion (4) and the rod journal (5)
Between be provided with for the oblique oil duct to connecting rod fuel feeding.
7. a kind of engine, including piston, cylinder body, crankshaft and the connecting rod for connecting the crankshaft and the piston, which is characterized in that
The crankshaft is crankshaft described in any one of claims 1-6.
8. a kind of vehicle, which is characterized in that including engine as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822207589.9U CN209309113U (en) | 2018-12-26 | 2018-12-26 | A kind of vehicle and its engine and engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822207589.9U CN209309113U (en) | 2018-12-26 | 2018-12-26 | A kind of vehicle and its engine and engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209309113U true CN209309113U (en) | 2019-08-27 |
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ID=67679156
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822207589.9U Active CN209309113U (en) | 2018-12-26 | 2018-12-26 | A kind of vehicle and its engine and engine crankshaft |
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| CN (1) | CN209309113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520395A (en) * | 2020-06-03 | 2020-08-11 | 广西玉柴机器股份有限公司 | Crankshaft structure of engine for boat and engine thereof |
-
2018
- 2018-12-26 CN CN201822207589.9U patent/CN209309113U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520395A (en) * | 2020-06-03 | 2020-08-11 | 广西玉柴机器股份有限公司 | Crankshaft structure of engine for boat and engine thereof |
| CN111520395B (en) * | 2020-06-03 | 2023-12-15 | 广西玉柴船电动力有限公司 | Crankshaft structure of engine for boat and engine thereof |
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