CN209340328U - Crankshaft for engine - Google Patents
Crankshaft for engine Download PDFInfo
- Publication number
- CN209340328U CN209340328U CN201822176303.5U CN201822176303U CN209340328U CN 209340328 U CN209340328 U CN 209340328U CN 201822176303 U CN201822176303 U CN 201822176303U CN 209340328 U CN209340328 U CN 209340328U
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- crankshaft
- engine
- round table
- construction section
- oil sealing
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a kind of crankshaft for engine, which includes: crankshaft body, flywheel mounting flange and transition enhancing structure, and the end far from the engine output end of the crankshaft body is formed with rear trunnion；The transition enhancing structure is connected between the rear trunnion and the flywheel mounting flange, and the transition enhancing structure is configured to conical round table.Crankshaft described in the utility model for engine can effectively increase the rigidity of crankshaft, reduce engine crankshaft and rear end bearing seat deflection.
Description
Technical field
The utility model relates to technical field of engines, in particular to a kind of crankshaft for engine.
Background technique
The output end of engine is connected with crankshaft, and crankshaft rear end trunnion is directly connected to installation flywheel, and flywheel is total at this stage
It is very big at rotary inertia, it is high to crankshaft rigidity requirement, and existing connection structure is in operation, such as in idling or low speed or
Under the operating condition accelerated after shift, because crankshaft rigidity is low, under fly-wheel control inertia force, there is regular deformation repeatedly in crankshaft,
Deformation impacts engine rear end and entire shafting, and generates the noise of similar " rumble ", influences passenger comfort；Together
When, crankshaft and bearing block deform, and cause shaft strength uneven, and bearing eccentric wear and insufficient lubrication, the later period, there are failure risks, thus
Engine is eventually led to scrap.
Utility model content
In view of this, the utility model is directed to a kind of crankshaft for engine, to increase the rigidity of crankshaft, reduce
Engine crankshaft and rear end bearing seat deflection.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of crankshaft for engine, comprising: crankshaft body, the separate engine output end of the crankshaft body
End be formed with rear trunnion；Flywheel mounting flange；And transition enhancing structure, the transition enhancing structure are connected to described
Afterwards between trunnion and the flywheel mounting flange, the transition enhancing structure is configured to conical round table.
One embodiment according to the present utility model, the cross section of the conical round table is from the flywheel mounting flange to institute
The direction for stating rear trunnion tapers off trend.
One embodiment according to the present utility model, the cone angle of the conical round table are 30 ° -60 °, and the conical round table exists
Length in the axial direction of the crankshaft body is 10mm-15mm.
One embodiment according to the present utility model is provided on the outer peripheral surface of the conical round table around taper circle
Multiple reinforcing ribs that the axis of platform is spaced apart.
Optionally, the reinforcing rib longitudinally extends and both ends extend to two end faces of the conical round table, arbitrary neighborhood
Two reinforcing ribs between angle it is equal.
Further, the flywheel mounting flange includes: oil sealing construction section and flywheel construction section, the oil sealing construction section with
The conical round table is connected, and one opposite with the conical round table of the oil sealing construction section is arranged in the flywheel construction section
End, the outer diameter of the flywheel construction section are less than the outer diameter of the oil sealing construction section, and the outer peripheral surface of the oil sealing construction section is configured to
Oil sealing mounting surface.
Further, multiple screw threads that are provided on the end face of the conical round table of the oil sealing construction section are installed
Hole, the quantity of the threaded mounting hole are equal with the quantity of the reinforcing rib.
Optionally, multiple threaded mounting holes are equal on the end face of the conical round table in the oil sealing construction section
Even distribution, and between the angle between two threaded mounting holes of arbitrary neighborhood and two reinforcing ribs of arbitrary neighborhood
Angle it is equal.
Further, the threaded mounting hole is in projection of the reinforcing rib on the cross section of the oil sealing construction section
It is interspersed, and the angle between any one threaded mounting hole and the reinforcing rib adjacent thereto is two of arbitrary neighborhood
The half of angle between the threaded mounting hole.
Optionally, the threaded mounting hole is blind hole, and the depth of the threaded mounting hole is installed not less than the oil sealing
The half of length of the section in the axial direction of the crankshaft body.
Compared with the existing technology, the crankshaft described in the utility model for engine has the advantage that
(1) crankshaft described in the utility model for engine, by between rear trunnion and flywheel mounting flange
Increase transition enhancing structure, so that the rigidity of crankshaft rear end is promoted, rear end deflection reduces.
(2) crankshaft described in the utility model for engine, after the fastener installation on flywheel, oil sealing mounting surface
Deformation reduces, and the rear trunnion and cylinder body main bearing seat of crankshaft rear end and the formation abrasion of bearing reduce, and thus power output is made
At NVH problem effectively solved, thus be conducive to improve vehicle comfort；The setting of blind hole has prevented machine oil from spiral shell simultaneously
The risk of line mounting hole exudation.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the perspective view of crankshaft described in the utility model embodiment；
Fig. 2 is the main view of crankshaft described in the utility model embodiment；
Fig. 3 is the installation diagram of crankshaft rear end and flywheel described in the utility model embodiment；
Fig. 4 is the sectional view of installation diagram in Fig. 3.
Description of symbols:
1- crankshaft, 11- crankshaft body, 111- trunnion, 112- crank arm, 113- connecting rod neck, trunnion after 114-, 115-
Flywheel mounting flange, 1151- oil sealing construction section, 11511- oil sealing mounting surface, 11512- threaded mounting hole, the installation of 1152- flywheel
Section, 116- conical round table, 1161- reinforcing rib, 2- flywheel, 3- fastener, 4- main bearing seat, 5- bearing, 6- cylinder body.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As Figure 1-Figure 2, the crankshaft 1 for engine of the utility model embodiment may include: crankshaft body 11,
The front end of crankshaft body 11 is connected with the output end of engine, and multiple trunnions 111, crank arm are provided on crankshaft body 11
112 and connecting rod neck 113, trunnion 111, crank arm 112 and connecting rod neck 113 be interspersed in the axial direction of crankshaft body 11, and
It is provided with a crank arm 112 between the trunnion 111 and connecting rod neck 113 of arbitrary neighborhood, is achieved in the transmitting of power, and will
The power that connecting rod transmits is changed into torque and is exported by crankshaft 1 and flywheel 2 is driven to rotate.
Further, the end of the separate engine output end of crankshaft body 11 is formed with rear trunnion 114, rear trunnion
Transition enhancing structure is provided between 114 and flywheel mounting flange 115, optionally, transition enhancing structure can be structured as taper
Rotary table 116.
In this way, the buffering transition shaft part deformed using transition enhancing structure as rear end, is conducive to reduce the change of 1 rear end of crankshaft
Shape amount, while the rigidity of 1 rear end of crankshaft is promoted.
Optionally, as Figure 1-Figure 2, the cross section of conical round table 116 is from the trunnion backward of flywheel mounting flange 115
114 direction tapers off trend, and further, the cross section of conical round table 116 can be from the trunnion backward of flywheel mounting flange 115
114 direction is linearly successively decreased, to be conducive to the molding of transition enhancing structure, and helps to mitigate transition enhancing structure
Quality.Meanwhile casting and forming can be used in transition enhancing structure, and without machining to it, therefore lower production costs.
Optionally, the cone angle of the conical round table 116 of the utility model embodiment can be 30 ° -60 °, and conical round table 116 exists
Length in the axial direction of crankshaft body 11 is 10mm-15mm, and the design of 116 length of this cone angle and conical round table is conducive to reduce
The deflection of 1 rear end of crankshaft, and effect is more obvious.
Optionally, as shown in Figure 1-Figure 3, multiple reinforcing ribs 1161 can be set on the outer peripheral surface of conical round table 116, it is more
A reinforcing rib 1161 is spaced apart around the axis of conical round table 116, as a result, by the outer peripheral surface of conical round table 116
Multiple reinforcing ribs 1161 are set, the intensity of conical round table 116 can be effectively increased, to be conducive to increase the intensity of entire crankshaft 1
And rigidity.
Further, reinforcing rib 1161 can extend longitudinally and both ends extend respectively to two ends of conical round table 116
Face, and wherein one end of reinforcing rib 1161 extends to flywheel mounting flange 115, makees so as to play the support to reinforcing rib 1161
With, and then be conducive to further increase the intensity of conical round table 116.
Optionally, multiple reinforcing ribs 1161 can be uniformly distributed on the outer peripheral surface of conical round table 116, and the two of arbitrary neighborhood
Angle α between a reinforcing rib 1161 is equal, for example, in one embodiment of the utility model, the quantity of reinforcing rib 1161
It can be 8, then the angle α between the two of arbitrary neighborhood reinforcing rib 1161 is 45 °, can effectively reduce 1 rear end of crankshaft as a result,
The transmitting of deformation.
Optionally, as depicted in figs. 1 and 2, flywheel mounting flange 115 may include: oil sealing construction section 1151 and flywheel peace
Section 1152 is filled, oil sealing construction section 1151 is connected with conical round table 116, and oil sealing construction section 1151 is arranged in flywheel construction section 1152
One end opposite with conical round table 116, and the outer diameter of flywheel construction section 1152 is less than the outer diameter of oil sealing construction section 1151, such as Fig. 4
It is shown, flywheel 2 be mounted on flywheel construction section 1152 and the inner face oil sealing construction section 1151 of flywheel 2 away from conical round table
116 end face fitting, flywheel 2 can be fixedly connected by fastener 3 with 1 rear end of crankshaft.
Specifically, multiple screw threads that can be set on the end face of conical round table 116 of oil sealing construction section 1151 are installed
Hole 11512, in threaded mounting hole 11512, the installation for being achieved in flywheel 2 is solid for cooperation after such as bolt of fastener 3 passes through flywheel 2
It is fixed, and install simply, it is firm to connect.
Optionally, multiple threaded mounting holes 11512 are equal on the end face of conical round table 116 in oil sealing construction section 1151
Even distribution, and the quantity of threaded mounting hole 11512 can be equal with the quantity of reinforcing rib 1161, and two spiral shells of arbitrary neighborhood
Angle between line mounting hole 11512 is equal with the angle between two reinforcing ribs 1161 of arbitrary neighborhood.In the utility model
A specific embodiment in, the quantity of threaded mounting hole 11512 and the quantity of reinforcing rib 1161 are 8, arbitrary neighborhood
Two threaded mounting holes 11512 between angle β be also 45 °, can effectively reduce as a result, 1 rear end of crankshaft deformation transmitting.
Further, threaded mounting hole 11512 and projection of the reinforcing rib 1161 on the cross section of oil sealing construction section 1151
It is interspersed, and the angle between any one threaded mounting hole 11512 and reinforcing rib 1161 adjacent thereto is any phase
The half of angle between two adjacent threaded mounting holes 11512, with the number of the quantity of threaded mounting hole 11512 and reinforcing rib 1161
Amount is for 8, then the angle α between two reinforcing ribs 1161 of arbitrary neighborhood is 45 °, and two screw threads of arbitrary neighborhood are pacified
The angle β filled between hole 11512 is also 45 °, between any one threaded mounting hole 11512 and reinforcing rib 1161 adjacent thereto
Angle γ be 22.5 °, can effectively reduce in this way 1 rear end of crankshaft deformation transmitting, while reduce the fastener 3 on flywheel 2 twist
The deformation of oil sealing construction section 1151 caused by next.
The outer peripheral surface of oil sealing construction section 1151 is configured to oil sealing mounting surface 11511, and the mountable cooperation of oil sealing is installed in oil sealing
On face 11511, threaded mounting hole 11512 is blind hole, the wind that machine oil can be effectively prevent to ooze out from threaded mounting hole 11512 as a result,
Danger.
Further, the depth of threaded mounting hole 11512 is not less than oil sealing construction section 1151 in the axial direction of crankshaft body 11
On length half, thus, it is ensured that the cooperation depth of fastener 3 and threaded mounting hole 11512 guarantees flywheel 2 and crankshaft 1
Installation strength, to improve its functional reliability.
To sum up, according to the crankshaft 1 for engine of the utility model embodiment, by rear trunnion 114 and flywheel
Increase transition enhancing structure between mounting flange 115, so that the rigidity of 1 rear end of crankshaft is promoted, rear end deflection reduces.
Meanwhile after the fastener 3 on flywheel 2 is installed, the deformation of oil sealing mounting surface 11511 reduces, the rear master of 1 rear end of crankshaft
The formation abrasion of the main bearing seat 4 and bearing 5 of axle journal 114 and cylinder body 6 reduces, and thus NVH problem caused by power output obtains
It effectively solves, to be conducive to improve vehicle comfort；The setting of blind hole simultaneously has prevented machine oil and has seeped from threaded mounting hole 11512
Risk out.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of crankshaft (1) for engine characterized by comprising
The end far from the engine output end of crankshaft body (11), the crankshaft body (11) is formed with rear trunnion
(114)；
Flywheel mounting flange (115)；And
Transition enhancing structure, the transition enhancing structure are connected to the rear trunnion (114) and the flywheel mounting flange
(115) between, the transition enhancing structure is configured to conical round table (116).
2. the crankshaft (1) according to claim 1 for engine, which is characterized in that the cross of the conical round table (116)
Section tapers off trend from the flywheel mounting flange (115) to the direction of trunnion (114) after described.
3. the crankshaft (1) according to claim 1 for engine, which is characterized in that the cone of the conical round table (116)
Angle is 30 ° -60 °, and length of the conical round table (116) in the axial direction of the crankshaft body (11) is 10mm-15mm.
4. the crankshaft (1) according to claim 1 for engine, which is characterized in that outside the conical round table (116)
The multiple reinforcing ribs (1161) being spaced apart around the axis of the conical round table (116) are provided on circumferential surface.
5. the crankshaft (1) according to claim 4 for engine, which is characterized in that the reinforcing rib (1161) is longitudinal
Extend and both ends extend to two end faces of the conical round table (116), the reinforcing rib (1161) of two of arbitrary neighborhood it
Between angle it is equal.
6. the crankshaft (1) according to claim 4 for engine, which is characterized in that the flywheel mounting flange (115)
It include: oil sealing construction section (1151) and flywheel construction section (1152), the oil sealing construction section (1151) and the conical round table
(116) it is connected, the flywheel construction section (1152) setting is in the oil sealing construction section (1151) and the conical round table (116)
Opposite one end, the outer diameter of the flywheel construction section (1152) are less than the outer diameter of the oil sealing construction section (1151), the oil sealing
The outer peripheral surface of construction section (1151) is configured to oil sealing mounting surface (11511).
7. the crankshaft (1) according to claim 6 for engine, which is characterized in that the oil sealing construction section (1151)
Be provided with multiple threaded mounting holes (11512), the threaded mounting hole on the end face of the conical round table (116)
(11512) quantity is equal with the quantity of the reinforcing rib (1161).
8. the crankshaft (1) according to claim 7 for engine, which is characterized in that multiple threaded mounting holes
(11512) being uniformly distributed on the end face of the conical round table (116) in the oil sealing construction section (1151), and any phase
Angle between two adjacent threaded mounting holes (11512) and between two reinforcing ribs (1161) of arbitrary neighborhood
Angle is equal.
9. the crankshaft (1) according to claim 7 for engine, which is characterized in that the threaded mounting hole (11512)
It is interspersed with projection of the reinforcing rib (1161) on the cross section of the oil sealing construction section (1151), and any one
Angle between threaded mounting hole (11512) and the reinforcing rib (1161) adjacent thereto is two spiral shells of arbitrary neighborhood
The half of angle between line mounting hole (11512).
10. the crankshaft (1) according to claim 7 for engine, which is characterized in that the threaded mounting hole
It (11512) is blind hole, and the depth of the threaded mounting hole (11512) is not less than the oil sealing construction section (1151) in the song
The half of length in the axial direction of shaft body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822176303.5U CN209340328U (en) | 2018-12-24 | 2018-12-24 | Crankshaft for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822176303.5U CN209340328U (en) | 2018-12-24 | 2018-12-24 | Crankshaft for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209340328U true CN209340328U (en) | 2019-09-03 |
Family
ID=67758740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822176303.5U Active CN209340328U (en) | 2018-12-24 | 2018-12-24 | Crankshaft for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209340328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502807A (en) * | 2020-11-26 | 2021-03-16 | 奇瑞汽车股份有限公司 | Engine and vehicle |
-
2018
- 2018-12-24 CN CN201822176303.5U patent/CN209340328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502807A (en) * | 2020-11-26 | 2021-03-16 | 奇瑞汽车股份有限公司 | Engine and vehicle |
| CN112502807B (en) * | 2020-11-26 | 2022-03-11 | 奇瑞汽车股份有限公司 | Engine and vehicle |
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| GR01 | Patent grant |