CN209586924U - Engine crankshaft - Google Patents
Engine crankshaft Download PDFInfo
- Publication number
- CN209586924U CN209586924U CN201920227001.8U CN201920227001U CN209586924U CN 209586924 U CN209586924 U CN 209586924U CN 201920227001 U CN201920227001 U CN 201920227001U CN 209586924 U CN209586924 U CN 209586924U
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- CN
- China
- Prior art keywords
- crankshaft
- trunnion
- rod journal
- engine
- engine crankshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003921 oil Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a kind of engine crankshaft, engine crankshaft includes crankshaft body, and rod journal, the trunnion positioned at the crank arm at rod journal both ends and on the outside of crank arm are provided on crankshaft body；The oilhole and oil duct for being lubricated to crankshaft body are additionally provided on crankshaft body；The distance between rod journal and trunnion R1 are 121~130mm, it is for 120mm engine below compared to the distance between rod journal and trunnion in the market, increase the distance between rod journal and trunnion, increase the crank throw radius of gyration of engine crankshaft, piston swept volume can be increased, increase engine power, promotes overall performance.
Description
Technical field
The utility model belongs to technical field of engines more particularly to a kind of engine crankshaft.
Background technique
Existing more than 100 years developing histories of diesel engine, are developed so far the mature type for having formed the more specifications of multi-series,
Technology is also quite mature.From since the establishment of the nation, the diesel technology in China is rapidly developed, and technology is increasingly mature, in skill
Today of art relative maturity, key part crankshaft as diesel engine maturation is almost without the leeway changed again, therefore structure
Change extremely difficult.
There are many kinds of the methods for improving effective engine power and economy, reduces the cost, and improving power is modern engine
Problem in machine development technique, generally by the way of are as follows: expand cylinder, optimization pressurization, oversize piston stroke.
Crankshaft is the main rotary part of engine, is mounted on the body of engine and the inside of crankcase, reassembles
Connecting rod piston assembly can bear the power that connecting rod transmits, and be transformed into torque and exported by crankshaft to drive on engine it
He works at attachment, and crankshaft is entire mechanical system power source.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of engine crankshafts, at trunnion center away from constant
Under the premise of, increase the distance between rod journal and trunnion, i.e. the increase crank throw radius of gyration, increases piston swept volume, increase
Engine power promotes overall performance.
In order to solve the above technical problems, the technical solution of the utility model is:
Engine crankshaft, the engine crankshaft include crankshaft body, and rod journal, position are provided on the crankshaft body
Crank arm in the rod journal both ends and the trunnion on the outside of the crank arm；It is also set on the crankshaft body
It is equipped with the oilhole and oil duct for being lubricated to the crankshaft body, the distance between the rod journal and the trunnion
R1 is 121~130mm.
Further, one end of the engine crankshaft is defined as front end, and the other end is defined as rear end, the front end setting
There is front end axis, the rear end is provided with ring flange.
Further, the center of the two neighboring trunnion is 124 ± 2mm away from L1.
Further, the width L4 of the trunnion is 40 ± 2mm.
Further, the width L3 of the rod journal is 33mm~45mm.
Further, the total length L 2 of the crankshaft body of the crankshaft is 640mm~675mm.
Further, the diameter of axle Φ d of the rod journal is 66~80mm.
Further, the diameter of axle Φ D of the trunnion is 70~85mm.
Further, the oil duct includes being connected to through the crank arm and with the rod journal trunnion
Oblique oil duct, the axial angle of the crankshaft body of the oblique oil duct and the crankshaft is 45 ° ± 3 °.
Further, the oilhole includes being set to the rod journal radial direction oil hole of the rod journal and being set to described
The trunnion radial direction oil hole of trunnion, the rod journal radial direction oil hole are located at the middle position of the rod journal, the master
Axle journal radial direction oil hole is located at the middle position of the trunnion.
By adopting the above-described technical solution, the beneficial effects of the utility model are:
Engine crankshaft includes crankshaft body, rod journal is provided on crankshaft body, positioned at rod journal both ends
Crank arm and the trunnion on the outside of crank arm；It is additionally provided on crankshaft body for being lubricated to crankshaft body
Oilhole and oil duct；The distance between rod journal and trunnion R1 are 121~130mm, compared to rod journal in the market and master
The distance between axle journal is to increase the distance between rod journal and trunnion for 120mm engine below, that is, increases hair
The crank throw radius of gyration of motivation crankshaft can increase piston swept volume, increase engine power, promote overall performance.
Detailed description of the invention
Fig. 1 is the perspective view of the engine crankshaft of the utility model；
Fig. 2 is the structural schematic diagram of the engine crankshaft of the utility model；
Fig. 3 is the cross-sectional view of Fig. 2；
Fig. 4 is the enlarged drawing of the cross-sectional view in the face A-A of Fig. 2；
In figure, 1- trunnion, 2- rod journal, 3- crank arm, 4- balance weight, 5- ring flange, the front end 6- axis, 71- connecting rod
Axle journal radial direction oil hole, 72- trunnion radial direction oil hole, 8- oil duct.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
In conjunction with Fig. 1 to Fig. 4 jointly shown in, a kind of engine crankshaft, it includes crankshaft body, is provided on crankshaft body
Rod journal 2, the trunnion 1 positioned at the crank arm 3 at 2 both ends of rod journal and positioned at 3 outside of crank arm；On crankshaft body
It is additionally provided with the oilhole and oil duct 8 for being lubricated to crankshaft body.In order to reduce the postrotational Oscillation Amplitude of crankshaft high-speed
And frequency, balance weight 4 is provided on part crank arm 3.The distance between rod journal 2 and trunnion 1 R1 be 121~
130mm, i.e. the crank throw radius R1 of crankshaft are 121~130mm.1 center of trunnion away from it is constant under the premise of, increase rod journal
The distance between 2 and trunnion 1, i.e. the increase crank throw radius of gyration, compared in the market between rod journal 2 and trunnion 1
Distance is to increase piston swept volume for 120mm engine below, increases engine power, promotes overall performance.
One end of engine crankshaft is defined as front end, and the other end is defined as rear end, and front end is provided with front end axis 6, and rear end is set
It is equipped with ring flange 5.The center of two neighboring trunnion 1 is 124 ± 2mm away from L1.The width L4 of trunnion 1 is 40 ± 2mm.Connecting rod
The width L3 of axle journal 2 is 33mm~45mm.The diameter of axle Φ d of rod journal 2 is 66~80mm.The diameter of axle Φ D of trunnion 1 be 70~
85mm。
The total length L 2 of the crankshaft body of crankshaft is 640mm~6750mm.
It is additionally provided with oilhole and oil duct 8 on crankshaft, enters oil duct 8 from oilhole injection lubricating oil, to guarantee to crankshaft
Lubrication, it is ensured that crankshaft works normally.
The oilhole of trunnion 1 is located at the axial middle position of trunnion 1, and can guarantee oilhole not reduces the strong of trunnion 1
Degree.
The oilhole of trunnion 1 enables 1 each rotation of trunnion fuel feeding twice using the structure of perforation, guarantees main shaft
1 each rotation of neck can be lubricated twice.
Oil duct 8 includes the oblique oil duct for running through crank arm 3 and being connected to trunnion 1 with rod journal 2, oblique oil duct and crankshaft
Crankshaft body axial angle be 45 ° ± 3 °, can guarantee that the oil duct that trunnion 1 is communicated with rod journal 2 is most narrow in crank throw
Locate middle position (b1 ≈ b2), guarantees that the intensity at crank throw reaches design requirement.
Oilhole includes the rod journal radial direction oil hole 71 that rod journal 2 is arranged in and the main shaft neck diameter that trunnion 1 is arranged in
To oilhole 72, rod journal radial direction oil hole 71 is preferably placed at the middle position (i.e. b3=0.5L3) of rod journal 2；Main shaft neck diameter
The middle position of trunnion 1 is preferably placed to oilhole 72.
Trunnion 1 drills with the oblique oil duct that rod journal 2 radially communicates in the center of trunnion 1 and rod journal 2,
Oilhole two sides can obtain maximum wall thickness, ensure that the intensity of rod journal 2, solve tradition in the side of rod journal 2
Drilling leads to the risk of the raw stress concentration off-axis of wall small property.
Positioned at the radial direction oil hole single-pass of the rod journal 2 in the middle position of rod journal 2, by 1000 hours reliabilities
Test, is able to satisfy the lubrication of rod journal 2, the intensity of rod journal 2 gets a promotion.
In the description of this specification, it is to be understood that the orientation of descriptions such as " front end ", " rear end ", " front end axis " or
Person's positional relationship is orientation or positional relationship based on the figure, it is only for convenient for description the utility model and simplification
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.
Although the foregoing describe specific embodiment of the present utility model, it should be appreciated by those skilled in the art,
Described embodiment is only a part of the embodiment of the utility model, and instead of all the embodiments, these are only to lift
Example explanation, the protection scope of the utility model is to be defined by the appended claims.Those skilled in the art is without departing substantially from this
It, can be to these embodiments under any creative labor of no process under the premise of the principle and essence of utility model
Various changes or modifications are made, but these change and modification each fall within the protection scope of the utility model.
Claims (10)
1. engine crankshaft, the engine crankshaft includes crankshaft body, and rod journal is provided on the crankshaft body, is located at
The crank arm and the trunnion on the outside of the crank arm at the rod journal both ends；It is characterized in that, the crankshaft sheet
Be additionally provided with the oilhole and oil duct for being lubricated to the crankshaft body on body, the rod journal and the trunnion it
Between distance R1 be 121~130mm.
2. engine crankshaft as described in claim 1, which is characterized in that one end of the engine crankshaft is defined as front end,
The other end is defined as rear end, and the front end is provided with front end axis, and the rear end is provided with ring flange.
3. engine crankshaft as described in claim 1, which is characterized in that the center of the two neighboring trunnion is away from L1
124±2mm。
4. engine crankshaft as claimed in claim 3, which is characterized in that the width L4 of the trunnion is 40 ± 2mm.
5. engine crankshaft as described in claim 1, which is characterized in that the width L3 of the rod journal be 33mm~
45mm。
6. engine crankshaft as described in claim 1, which is characterized in that the total length L 2 of the crankshaft body of the crankshaft is
640mm~675mm.
7. engine crankshaft as described in claim 1, which is characterized in that the diameter of axle Φ d of the rod journal is 66~80mm.
8. engine crankshaft as described in claim 1, which is characterized in that the diameter of axle Φ D of the trunnion is 70~85mm.
9. engine crankshaft as described in claim 1, which is characterized in that the oil duct includes through the crank arm and inciting somebody to action
The axial direction of the crankshaft body of the oblique oil duct that the trunnion is connected to the rod journal, the oblique oil duct and the crankshaft
Angle α is 45 ° ± 3 °.
10. engine crankshaft as described in claim 1, which is characterized in that the oilhole includes being set to the rod journal
Rod journal radial direction oil hole and be set to the trunnion radial direction oil hole of the trunnion, the rod journal radial direction oil hole is located at
The middle position of the rod journal, the trunnion radial direction oil hole are located at the middle position of the trunnion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920227001.8U CN209586924U (en) | 2019-02-21 | 2019-02-21 | Engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920227001.8U CN209586924U (en) | 2019-02-21 | 2019-02-21 | Engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586924U true CN209586924U (en) | 2019-11-05 |
Family
ID=68354644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920227001.8U Active CN209586924U (en) | 2019-02-21 | 2019-02-21 | Engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209586924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673587A (en) * | 2022-03-23 | 2022-06-28 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
-
2019
- 2019-02-21 CN CN201920227001.8U patent/CN209586924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673587A (en) * | 2022-03-23 | 2022-06-28 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
| CN114673587B (en) * | 2022-03-23 | 2023-09-22 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Engine crankshaft Granted publication date: 20191105 Pledgee: Anqiu Shandong rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG KOFO POWER CO.,LTD. Registration number: Y2024980008172 |