CN208619512U - The Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging - Google Patents
The Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging Download PDFInfo
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- CN208619512U CN208619512U CN201821233206.9U CN201821233206U CN208619512U CN 208619512 U CN208619512 U CN 208619512U CN 201821233206 U CN201821233206 U CN 201821233206U CN 208619512 U CN208619512 U CN 208619512U
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- steel
- crankshafts
- diesel engine
- charging
- high pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses the Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging, the trunnion diameter and cylinder diameter ratio of Steel Crankshafts are 0.84~0.90；The rod journal diameter and cylinder diameter ratio of Steel Crankshafts are 0.71~0.75；The crank thickness and cylinder diameter ratio of Steel Crankshafts are 0.25~0.3；And the connection fillet of trunnion is the 3.6-5% of trunnion, the connection fillet of rod journal is the 3.6-5% of rod journal.The Steel Crankshafts of the utility model can satisfy the high intensity of high-power diesel engine in high pressure-charging (detonation pressure is greater than 180bar) (general power is greater than 200KW, and cylinder diameter is greater than 110mm), the high technical need by detonation pressure.
Description
Technical field
The utility model is about engine manufacturing field, especially with regard to a kind of steel of the medium-and-large-sized diesel engine of high pressure-charging
Crankshaft.
Background technique
The Steel Crankshafts of the low-powered engine of the prior art, detonation pressure can only generally arrive 160bar or so, and crankshaft designs are not
It is enough strong.And (general power is greater than 200KW to high-power diesel engine, and cylinder diameter is greater than in high pressure-charging (detonation pressure is greater than 180bar)
Steel Crankshafts 110mm) need the special design in terms of structural parameters and heat treatment process, to reinforce the intensity of crankshaft.
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 Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging, can satisfy height
The technology of high-power diesel engine (general power is greater than 200KW, and cylinder diameter is greater than 110mm) needs in pressurization (detonation pressure is greater than 180bar)
It asks.
To achieve the above object, the utility model provides a kind of Steel Crankshafts of medium-and-large-sized diesel engine of high pressure-charging, steel
The trunnion diameter and cylinder diameter ratio of crankshaft are 0.84~0.90；The rod journal diameters of Steel Crankshafts and cylinder diameter ratio be 0.71~
0.75；The crank thickness and cylinder diameter ratio of Steel Crankshafts are 0.25~0.3；And the connection fillet of trunnion is trunnion
3.6-5%, the connection fillet of rod journal are the 3.6-5% of rod journal.
In a preferred embodiment, the material of Steel Crankshafts handles steel using modifier treatment steel or Micro Alloying.
In a preferred embodiment, the ontology hardness of modifier treatment steel is 260~328HBW, and unilateral quenched depth is
15-19mm, tensile strength are greater than 860MPa, elongation percentage 12%-15%, and metallographic is 1~5 grade of tempered sorbite.
In a preferred embodiment, the hardness of main journal surface, rod journal surface and its connection radiused surface is
53-60HRC quenches with a thickness of 3-5mm.
Compared with prior art, the Steel Crankshafts of the medium-and-large-sized diesel engine of the high pressure-charging of the utility model, can satisfy height
The high intensity of high-power diesel engine (general power is greater than 200KW, and cylinder diameter is greater than 110mm) in pressurization (detonation pressure be greater than 180bar),
Technical need of the height by detonation pressure.
Detailed description of the invention
Fig. 1 is the schematic front view according to the Steel Crankshafts of one embodiment of the utility model.
Fig. 2 is the partial enlarged view at the B of Fig. 1.
Fig. 3 is the diagrammatic cross-section at the A-A of Fig. 1.
Main appended drawing reference explanation:
D1- trunnion diameter, d2- rod journal diameter, H- crank thickness.
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 to Figure 3, Fig. 1 is the schematic front view according to the Steel Crankshafts of one embodiment of the utility model.Figure
2 be the partial enlarged view at the B of Fig. 1.Fig. 3 is the diagrammatic cross-section at the A-A of Fig. 1.According to the utility model preferred implementation side
A kind of Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging of formula.In some embodiments, the material of Steel Crankshafts can use
Modifier treatment steel can also handle steel using Micro Alloying.The ontology hardness of general modifier treatment steel is 260~328HBW, unilateral
Quenched depth is 15-19mm, and tensile strength is greater than 860MPa, elongation percentage 12%-15%, and metallographic is 1~5 grade of tempered sorbite.
In some embodiments, the ratio of the cylinder diameter D of the trunnion diameter d1 and engine of Steel Crankshafts be 0.84~
0.90；0.71~0.75 for the ratio of the rod journal diameter d2 and cylinder diameter D of Steel Crankshafts；The crank thickness H of Steel Crankshafts
Ratio with cylinder diameter D is 0.25~0.3；And the connection fillet of trunnion is the 3.6-5% of main journal diameter, rod journal
Connect the 3.6-5% that fillet is rod journal diameter.
According to a kind of place of the Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging of another preferred embodiment of the utility model
Science and engineering skill comprising induction hardening process, destressing are carried out to main journal surface, rod journal surface and its connection radiused surface
Technique and secondary quenching technique.
In some embodiments, induction hardening process is prequenching fire process, the trunnion table after prequenching fire process
The hardness in face, rod journal surface and its connection radiused surface reaches 35-42HRC, and quenching thickness reaches 0.5-1mm.
In some embodiments, destressing technique is that crankshaft is placed in 176~205 DEG C of temperature environment inside holding at least
1 hour or more.
In some embodiments, destressing technique is carried out before lappingout process and grinding process.
In some embodiments, secondary quenching technique is formal quenching technical, the main shaft after formal quenching technical
The hardness on neck surface, rod journal surface and its connection radiused surface reaches 53-60HRC, and quenching thickness reaches 3-5mm.
It should be noted that the present embodiment only depicts cross-sectional view at the A-A mono- of Fig. 1, but the utility model is not with this
It is limited, the trunnion and rod journal of the Steel Crankshafts of the utility model all have the thermal effectiveness similar with Fig. 3.
The Steel Crankshafts of the medium-and-large-sized diesel engine of the high pressure-charging of the utility model compared with prior art, can satisfy high increasing
The high intensity of high-power diesel engine (general power is greater than 200KW, and cylinder diameter is greater than 110mm), height in pressure (detonation pressure is greater than 180bar)
By the technical need of detonation pressure.
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 (4)
1. a kind of Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging, which is characterized in that
The trunnion diameter and cylinder diameter ratio of the Steel Crankshafts are 0.84~0.90；
The rod journal diameter of the Steel Crankshafts and the cylinder diameter ratio are 0.71~0.75；
The crank thickness of the Steel Crankshafts and the cylinder diameter ratio are 0.25~0.3；And
The connection fillet of the trunnion is the 3.6-5% of the trunnion, and the connection fillet of the rod journal is the company
The 3.6-5% of bar axle journal.
2. the Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging as described in claim 1, which is characterized in that the Steel Crankshafts
Material handles steel using modifier treatment steel or Micro Alloying.
3. the Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging as claimed in claim 2, which is characterized in that the modifier treatment steel
Ontology hardness be 260~328HBW, unilateral quenched depth be 15-19mm, tensile strength be greater than 860MPa, elongation percentage 12%-
15%, metallographic is 1~5 grade of tempered sorbite.
4. the Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging as described in claim 1, which is characterized in that the trunnion table
The hardness in face, the rod journal surface and its connection radiused surface is 53-60HRC, is quenched with a thickness of 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233206.9U CN208619512U (en) | 2018-08-01 | 2018-08-01 | The Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233206.9U CN208619512U (en) | 2018-08-01 | 2018-08-01 | The Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208619512U true CN208619512U (en) | 2019-03-19 |
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ID=65708331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821233206.9U Active CN208619512U (en) | 2018-08-01 | 2018-08-01 | The Steel Crankshafts of the medium-and-large-sized diesel engine of high pressure-charging |
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| Country | Link |
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| CN (1) | CN208619512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716508A (en) * | 2018-08-01 | 2018-10-30 | 广西玉柴机器股份有限公司 | The Steel Crankshafts and its treatment process of the medium-and-large-sized diesel engine of high pressure-charging |
-
2018
- 2018-08-01 CN CN201821233206.9U patent/CN208619512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716508A (en) * | 2018-08-01 | 2018-10-30 | 广西玉柴机器股份有限公司 | The Steel Crankshafts and its treatment process of the medium-and-large-sized diesel engine of high pressure-charging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230105 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |
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| TR01 | Transfer of patent right |