CN108397306A - For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress - Google Patents
For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress Download PDFInfo
- Publication number
- CN108397306A CN108397306A CN201810184121.4A CN201810184121A CN108397306A CN 108397306 A CN108397306 A CN 108397306A CN 201810184121 A CN201810184121 A CN 201810184121A CN 108397306 A CN108397306 A CN 108397306A
- Authority
- CN
- China
- Prior art keywords
- oil leab
- compensating groove
- cylinder block
- bearing bore
- base bearing
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
- F02F1/20—Other cylinders characterised by constructional features providing for lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a kind of structures for reducing cylinder block main bearing seat oil leab rectangular ports stress, the base bearing bore of cylinder block offers oil leab, compensating groove is offered in the junction in base bearing bore Yu oil leab hole, the surface of compensating groove is less than the surface of base bearing bore, the center of circle of compensating groove is arranged on the center line of oil leab, the width of compensating groove is more than oil leab diameter, and the depth of compensating groove is more than the 1/3 of oil leab diameter.The structure processing of the present invention is simple, of low cost, it is easy to accomplish, can significantly lifting spindle bearing hole intensity, the safety coefficient of base bearing bore can be promoted 20% or more.
Description
Technical field
The present invention relates to diesel engine technologies fields, and in particular to one kind is for reducing cylinder block main bearing seat lubricating oil
The structure of road rectangular ports stress.
Background technology
The base bearing bore of diesel engine cylinder body needs to be provided with oil leab, is guided from the lubricating system of diesel engine
Lubricating oil carrys out lubricating spindle watt, to prevent main bearing shell from causing due to dry friction the failure of tile kilning.However, traditional oil leab hole
Trepanning mode as shown in Figure 1, be typically directly drill in main bearing seat hole surface.
However, directly main bearing seat hole surface hold oil leab hole can cause oil leab rectangular ports stress concentrate and cause
Safety coefficient is low at this, so as to cause diesel engine main bearing seat strength reduction, and then reduces the reliability of diesel engine.Pass through CAE
The oil leab aperture safety coefficient of the intensive analysis structure design is 1.01, and safety coefficient is relatively low.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
The purpose of the present invention is to provide a kind of structure for reducing cylinder block main bearing seat oil leab rectangular ports stress,
The shortcomings that leading to diesel engine main bearing seat strength reduction to overcome the oil leab rectangular ports stress of the prior art to concentrate.
To achieve the above object, the present invention provides one kind for reducing cylinder block main bearing seat oil leab rectangular ports stress
Structure, the base bearing bore of cylinder block offers oil leab, opened up in base bearing bore and the junction in oil leab hole
There are compensating groove, the surface of compensating groove to be less than the surface of base bearing bore, the center line in oil leab is arranged in the center of circle of compensating groove
On, the width of compensating groove is more than oil leab diameter, and the depth of compensating groove is more than the 1/3 of oil leab diameter.
In a preferred embodiment, the width of compensating groove is bigger 3mm than oil leab diameter.
In a preferred embodiment, compensating groove has circular shape.
Compared with prior art, the knot according to the present invention for reducing cylinder block main bearing seat oil leab rectangular ports stress
Structure has the advantages that：The structure processing of the present invention is simple, of low cost, it is easy to accomplish, it can significantly hold lifting spindle
The safety coefficient of base bearing bore can be promoted 20% or more by the intensity of bore.Fundamentally solves main bearing seat hole drill
Caused diesel engine main bearing bore opens the rectangular ports stress concentration in oil leab hole and intensity is caused to drop behind logical oil leab hole
Low problem.
Description of the drawings
Fig. 1 is the base bearing bore oil leab schematic diagram of the prior art；
Fig. 2 is that the part of the structure according to the present invention for reducing cylinder block main bearing seat oil leab rectangular ports stress is main
View；And
Fig. 3 is that the part of the structure according to the present invention for reducing cylinder block main bearing seat oil leab rectangular ports stress is faced upward
View.
Main appended drawing reference explanation：
1- cylinder block, 2- oil leabs, 3- base bearing bore, 4- compensating grooves.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As Figure 2-3, according to the preferred embodiment of the present invention for reducing cylinder block main bearing seat oil leab hole
The structure of mouth stress, the base bearing bore 3 of cylinder block 1 offer oil leab 2, in base bearing bore 3 and oil leab hole
Junction offers compensating groove 4, and the surface of compensating groove 4 is less than the surface of base bearing bore so that compensating groove 4 is not involved in base bearing
The effect of the bearing load of bore 3, while to ensure the bearing capacity of base bearing bore 3, needing the area of compensating groove 4 as far as possible
It is small.The center of circle of compensating groove 4 is arranged on the center line of oil leab 2, and the width of compensating groove 4 is more than oil leab diameter, off-load
The depth of slot 4 is equal to or more than the 1/3 of oil leab diameter.
In said program, in the case where meeting the requirement of 3 safety coefficient of base bearing bore, 4 area of compensating groove is minimized,
Preferably, the width of compensating groove 4 is bigger 3mm than oil leab diameter, and the depth of compensating groove 4 is the 1/3 of oil leab diameter.Off-load
It is 32.5mm that slot 4, which has circular shape, arc radius R,.
The structure processing of the present invention is simple, of low cost, can significantly lifting spindle bearing hole intensity, to main bearing seat
Hole CAE intensive analysis, after opening up compensating groove, oil leab aperture safety coefficient is promoted to 1.22 by 1.01, significant effect.This hair
Bright structure can significantly reduce cylinder block main bearing seat oil leab rectangular ports stress, and the safety coefficient of base bearing bore is promoted
20% or more.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (3)
1. a kind of structure for reducing cylinder block main bearing seat oil leab rectangular ports stress, the base bearing bore of the cylinder block
Offer oil leab, which is characterized in that offer off-load in the junction in the base bearing bore Yu the oil leab hole
Slot, the surface of the compensating groove are less than the surface of the base bearing bore, and the center of circle of the compensating groove is arranged in the lubricating oil
On the center line in road, the width of the compensating groove is more than oil leab diameter, and the depth of the compensating groove is equal to or more than institute
State the 1/3 of oil leab diameter.
2. structure according to claim 1, which is characterized in that the width of the compensating groove is bigger than the oil leab diameter
3mm。
3. structure according to claim 1, which is characterized in that the compensating groove has circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184121.4A CN108397306A (en) | 2018-03-06 | 2018-03-06 | For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184121.4A CN108397306A (en) | 2018-03-06 | 2018-03-06 | For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397306A true CN108397306A (en) | 2018-08-14 |
Family
ID=63092183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810184121.4A Pending CN108397306A (en) | 2018-03-06 | 2018-03-06 | For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397306A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209820A (en) * | 1996-01-31 | 1997-08-12 | Teikoku Piston Ring Co Ltd | Cylinder liner and its manufacture |
| CN2653210Y (en) * | 2003-06-27 | 2004-11-03 | 绵阳新晨动力机械有限公司 | Four cylinder petrol engine crank |
| CN2711393Y (en) * | 2004-09-29 | 2005-07-20 | 广西玉柴机器股份有限公司 | Unloading groove for cylinder cap of four-valve diesel engine |
| JP2006144913A (en) * | 2004-11-19 | 2006-06-08 | Toyota Motor Corp | Sliding bearing |
| CN102878288A (en) * | 2012-10-22 | 2013-01-16 | 昆明云内动力股份有限公司 | Engine cylinder block |
| CN104533953A (en) * | 2014-12-23 | 2015-04-22 | 天津尚吉液压设备有限公司 | Spherical surface hydraulic bearing |
| CN207892719U (en) * | 2018-03-06 | 2018-09-21 | 广西玉柴机器股份有限公司 | For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress |
-
2018
- 2018-03-06 CN CN201810184121.4A patent/CN108397306A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209820A (en) * | 1996-01-31 | 1997-08-12 | Teikoku Piston Ring Co Ltd | Cylinder liner and its manufacture |
| CN2653210Y (en) * | 2003-06-27 | 2004-11-03 | 绵阳新晨动力机械有限公司 | Four cylinder petrol engine crank |
| CN2711393Y (en) * | 2004-09-29 | 2005-07-20 | 广西玉柴机器股份有限公司 | Unloading groove for cylinder cap of four-valve diesel engine |
| JP2006144913A (en) * | 2004-11-19 | 2006-06-08 | Toyota Motor Corp | Sliding bearing |
| CN102878288A (en) * | 2012-10-22 | 2013-01-16 | 昆明云内动力股份有限公司 | Engine cylinder block |
| CN104533953A (en) * | 2014-12-23 | 2015-04-22 | 天津尚吉液压设备有限公司 | Spherical surface hydraulic bearing |
| CN207892719U (en) * | 2018-03-06 | 2018-09-21 | 广西玉柴机器股份有限公司 | For reducing the structure of cylinder block main bearing seat oil leab rectangular ports stress |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |