CN115013179B - Fishbone-shaped arched aluminum alloy cylinder body inner insert structure - Google Patents
Fishbone-shaped arched aluminum alloy cylinder body inner insert structure Download PDFInfo
- Publication number
- CN115013179B CN115013179B CN202210742628.3A CN202210742628A CN115013179B CN 115013179 B CN115013179 B CN 115013179B CN 202210742628 A CN202210742628 A CN 202210742628A CN 115013179 B CN115013179 B CN 115013179B
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- Prior art keywords
- fishbone
- arched
- aluminum alloy
- arch part
- rib
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Classifications
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- 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
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
Abstract
The invention discloses a fishbone-shaped arched aluminum alloy cylinder body inner insert structure, and belongs to the technical field of automobile engines. The novel inner insert comprises an inner insert body, wherein the inner insert body comprises a middle arched part and two end fishbone parts used for supporting the middle arched part. The two ends of the fishbone form effective support to the middle arch part; the arch part of the embedded part bears the acting force exerted by the crankshaft in the working state, the arch structure has better stability, the lower part of the crankshaft hole is supported, the rigidity of the area is increased, the deformation of the area is reduced, and the roundness of the crankshaft hole in the working state is ensured.
Description
Technical Field
The invention belongs to the technical field of automobile engines, and particularly relates to a fishbone-shaped arched aluminum alloy cylinder body inner insert structure.
Background
With environmental protection and energy saving requirements, the lightweight design of the engine is attracting more and more attention. The cylinder body is the heaviest part of the engine, and the weight reduction of the cylinder body is the weight of the engine; the frame type cylinder body has a plurality of advantages as a structural form of the cylinder body; the lower cylinder body integrates part of the skirt part and the tile cover of the gantry cylinder body, so that the structural rigidity of the lower cylinder body is greatly improved compared with that of the gantry cylinder body, the lower cylinder body can also play the function of a reinforcing plate of the gantry cylinder body, and the reinforcing plate is omitted, so that the cost is reduced, but the mounting flange surface is increased due to the mounting requirement of the upper cylinder body and the lower cylinder body, and the weight of the lower cylinder body is also increased due to the structure between the skirt part and the tile cover, so that the weight is greatly increased compared with that of the gantry structure. The weight becomes a great obstacle for popularization and use of the frame type cylinder body; the use of aluminum alloy with lower density instead of conventional ductile iron has become a new trend.
Because the connecting structure between the skirt and the tile cover makes the lower cylinder body, especially the inner side of the skirt area appear to be designed to be bloated, because the stress area is not between the outer cover and the skirt, the strength is more abundant, so that the adoption of materials with smaller density such as aluminum alloy to replace the traditional ductile iron becomes possible, but in the actual design process, the simulation calculation result shows that the deformation of the crankshaft hole has a deterioration trend, so that the invention of a new fishbone-shaped arched aluminum alloy cylinder body insert structure which is suitable for the aluminum alloy material to replace the traditional ductile iron becomes necessary.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a fishbone-shaped arched aluminum alloy cylinder body inner insert structure.
The technical scheme adopted by the invention is as follows: the utility model provides an insert structure in fishbone form arch aluminum alloy cylinder body, includes the insert body, the insert body includes middle arch portion and is used for supporting the both ends fishbone portion that draws together middle arch portion.
Further preferably, the lower part of the middle arch part is provided with a follow-up reinforcing rib, and the top surface of the follow-up reinforcing rib is attached to the bottom surface of the middle arch part.
In a further preferable structure, the middle arch part is provided with a plurality of weight-reducing round holes.
Further preferably, the weight-reducing round holes are symmetrically arranged on the middle arch part, a central weight-reducing round hole is arranged in the center of the middle arch part, a plurality of side weight-reducing round holes are respectively arranged on the left side and the right side of the central weight-reducing round hole, and the side weight-reducing round holes are arranged in a matrix.
Further preferred structure, both ends fishbone portion includes many perpendicular muscle and many oblique muscle, and many oblique muscle are located many perpendicular muscle outsides, and many perpendicular muscle and many oblique muscle are fishbone form jointly, and many oblique muscle incline to the inserts body outside.
Further preferred structures, the plurality of vertical ribs comprise a first vertical rib and a second vertical rib; the plurality of diagonal ribs comprise a first diagonal rib, a second diagonal rib and a third diagonal rib, and the horizontal distance between the second vertical rib and the first diagonal rib is greater than the horizontal distance between the first vertical rib and the second vertical rib; the distances among the plurality of inclined ribs are equal.
Further preferred structure, be connected through connecting portion between middle arch portion and the perpendicular muscle that is close to middle arch portion, connecting portion include slope changeover portion and horizontal changeover portion, the width of the one end that slope changeover portion is connected with middle arch portion is greater than the one end of being connected with horizontal changeover portion.
Further preferred structure, all set up first round hole in the middle of the first perpendicular muscle, the second round hole is all set up in the middle of slope changeover portion and the second perpendicular muscle, all set up the third round hole between many oblique muscle, the aperture of second round hole is greater than the aperture of first round hole, the aperture of first round hole is greater than the aperture of third round hole.
Further preferable structure, the wall thickness of the insert body is 4.5-5mm, the diameter of the middle arch part is 2.5 times of the diameter of the crankshaft matched with the middle arch part, the center of the middle arch part is positioned on a connecting line perpendicular to the bottom surface through the center of the crankshaft hole, the minimum distance between the middle arch part and the lower semicircle of the crankshaft hole matched with the middle arch part is 5-5.5 mm, and the width of the insert body is 10-11 mm smaller than the width of the crankshaft hole bearing seat.
The utility model provides a lower cylinder body, includes the interior inserts structure of fishbone form arch aluminum alloy cylinder body, interior inserts body install in the bearing frame of lower cylinder body is inside, middle arch portion centre of a circle is located through bent axle hole centre of a circle and bottom surface vertically on the line. The parallelism between the axis of the middle arch part and the central line of the crank hole is required to be 0.02, and the minimum distance between the upper plane of the middle arch part and the crank hole is 4.5-5mm.
According to the invention, after aluminum alloy is used for replacing ductile iron, the degree of roundness of a crank hole is deteriorated by about 97%, according to deformation characteristics, in order to increase the strength and rigidity of the lower part of the crank hole, a fishbone-shaped arched insert is designed, the insert is arranged in a sand core during casting, after aluminum water is cast, fishbone-shaped tail parts at two ends of the insert can be fully combined with an aluminum alloy body and play a role of chill, a role of adjusting cooling speed is played on a bearing seat with a thicker crank hole area, after the integral cooling, the insert and the aluminum alloy body are solidified into a whole, and effective supports are formed at middle arched parts at two ends of the fishbone; the arch part of the embedded part bears the acting force exerted by the crankshaft in the working state, the arch structure has better stability, the lower part of the crankshaft hole is supported, the rigidity of the area is increased, the deformation of the area is reduced, and the roundness of the crankshaft hole in the working state is ensured.
The fishbone-shaped arch design ensures the stability of the structure, the following reinforcing ribs are added at the lower part of the middle arch part, the rigidity of the arch part is improved, the axial matching width of the insert and the lower cylinder bearing seat is improved, the locking strength between the insert and the matrix is improved, and the fishbone-shaped arch structure is combined with the casting chill, so that the purposes of improving the rigidity and adjusting the cooling speed are achieved.
During casting, the embedded piece is arranged in the bearing seat in the middle, so that the locking strength of the embedded piece and the lower cylinder body bearing seat is ensured; the lower part of the inner insert is fully combined with the characteristics of the aluminum alloy casting process, and is combined with a chill for adjusting the cooling speed required by casting, so that the cooling speed of the aluminum alloy at the bearing seat part is accelerated while the inner support function is achieved, the cooling speed of the aluminum alloy at the bearing seat part is consistent with that of other areas with smaller wall thickness, and the casting stress is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the present invention assembled with a lower cylinder;
fig. 4 is a cross-sectional view of fig. 3.
Detailed Description
The invention will now be described in further detail with reference to the drawings and specific examples, which are given for clarity of understanding and are not to be construed as limiting the invention.
As shown in fig. 1-2, the present invention includes an insert body 1, the insert body 1 including a middle arch portion 11 and two end fishbone portions 12 for supporting the middle arch portion 11.
The lower part of the middle arch part 11 is provided with a follow-up reinforcing rib 13, and the top surface of the follow-up reinforcing rib 13 is attached to the bottom surface of the middle arch part 11.
The middle arch part 11 is provided with a plurality of weight-reducing round holes.
The weight-reducing round holes are symmetrically arranged on the middle arched part, a central weight-reducing round hole 111 is arranged in the center of the middle arched part 11, a plurality of side weight-reducing round holes 112 are respectively arranged on the left side and the right side of the central weight-reducing round hole 111, and the side weight-reducing round holes 112 are arranged in a matrix.
The fishbone parts 12 at the two ends comprise a plurality of vertical ribs and a plurality of inclined ribs, the plurality of inclined ribs are positioned at the outer sides of the plurality of vertical ribs, the plurality of vertical ribs and the plurality of inclined ribs are in fishbone shapes, and the plurality of inclined ribs incline to the outer sides of the insert body 1.
The plurality of vertical ribs comprises a first vertical rib 121 and a second vertical rib 122; the plurality of diagonal ribs comprise a first diagonal rib 123, a second diagonal rib 124 and a third diagonal rib 125, and the horizontal distance between the second vertical rib 122 and the first diagonal rib 123 is greater than the horizontal distance between the first vertical rib 121 and the second vertical rib 122; the distances among the plurality of inclined ribs are equal.
The middle arch part 11 is connected with the vertical ribs 121 close to the middle arch part 11 through connecting parts 126, the connecting parts 126 comprise inclined transition sections 127 and horizontal transition sections 128, and the width of one end of the inclined transition sections 127 connected with the middle arch part 11 is larger than that of one end connected with the horizontal transition sections 128.
The first round holes 129 are formed in the middle of the first vertical ribs 121, the second round holes 130 are formed in the middle of the inclined transition section 127 and the second vertical ribs 122, the third round holes 131 are formed among the inclined ribs, the aperture of the second round holes 130 is larger than that of the first round holes 129, and the aperture of the first round holes 129 is larger than that of the third round holes 131.
The wall thickness of the insert body 1 is 4.5-5mm, the diameter of the middle arched part 11 is 2.5 times of the diameter of a crankshaft matched with the middle arched part, the circle center of the middle arched part 11 is positioned on a connecting line perpendicular to the bottom surface through the circle center of the crankshaft hole, the minimum distance between the middle arched part 11 and the lower semicircle of the crankshaft hole matched with the middle arched part 11 is 5-5.5 mm, and the width of the insert body 1 is 10-11 mm smaller than the width of a crankshaft hole bearing seat.
As shown in fig. 3-4, a lower cylinder body comprises a fishbone-shaped arched aluminum alloy cylinder body inner insert structure, the inner insert body 1 is installed inside a bearing seat of the lower cylinder body 2, and the center of a middle arched part 11 is located on a connecting line perpendicular to the bottom surface through the center of a crankshaft hole. The parallelism between the axis of the middle arch part 11 and the central line of the crank hole is required to be 0.02, and the minimum distance between the upper plane of the middle arch part 11 and the crank hole is 4.5-5mm.
After the fishbone-shaped insert is adopted, a calculation model is designed, in a space rectangular coordinate system, any point P is given, R and theta are the polar coordinates of the projection point of the point P on an xOy plane, z is the vertical coordinates of the point P, and the coordinate is called (R, theta, z) as the cylindrical coordinates of the point P, and the coordinate is marked as P (R, theta, z), wherein R is more than or equal to 0,0 is more than or equal to theta is less than or equal to 2 pi, and- ++infinity is < z >. T is the angle theta of the polar coordinates, and the deformation of the crankshaft hole of the lower aluminum alloy cylinder body is greatly improved according to the simulation calculation result, so that the levels of T and R of ductile iron are basically reached, and the design requirement of products is met.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (8)
1. An insert structure in fishbone form arch aluminum alloy cylinder body, its characterized in that: the novel plastic inner insert comprises an inner insert body (1), wherein the inner insert body (1) comprises a middle arched part (11) and two end fishbone parts (12) used for supporting the middle arched part (11);
the two-end fishbone parts (12) comprise a plurality of vertical ribs and a plurality of inclined ribs, the plurality of inclined ribs are positioned at the outer sides of the plurality of vertical ribs, the plurality of vertical ribs and the plurality of inclined ribs are in a fishbone shape together, and the plurality of inclined ribs incline to the outer sides of the insert body (1);
the plurality of vertical ribs comprise a first vertical rib (121) and a second vertical rib (122); the plurality of diagonal ribs comprise a first diagonal rib (123), a second diagonal rib (124) and a third diagonal rib (125), and the horizontal distance between the second vertical rib (122) and the first diagonal rib (123) is greater than the horizontal distance between the first vertical rib (121) and the second vertical rib (122); the distances among the plurality of inclined ribs are equal.
2. The fishbone arched aluminum alloy cylinder insert structure of claim 1, wherein: the lower part of the middle arch part (11) is provided with a follow-up reinforcing rib (13), and the top surface of the follow-up reinforcing rib (13) is attached to the bottom surface of the middle arch part (11).
3. The fishbone arched aluminum alloy cylinder insert structure of claim 1, wherein: the middle arch part (11) is provided with a plurality of weight-reducing round holes.
4. A fishbone arched aluminum alloy cylinder insert structure as claimed in claim 3, wherein: the weight-reducing round holes are symmetrically arranged on the middle arched portion, a center weight-reducing round hole (111) is arranged in the center of the middle arched portion (11), a plurality of side weight-reducing round holes (112) are respectively arranged on the left side and the right side of the center weight-reducing round hole (111), and the side weight-reducing round holes (112) are arranged in a matrix mode.
5. The fishbone arched aluminum alloy cylinder insert structure of claim 1, wherein: the middle arch part (11) is connected with the vertical ribs (121) close to the middle arch part (11) through connecting parts (126), the connecting parts (126) comprise inclined transition sections (127) and horizontal transition sections (128), and the width of one end, connected with the middle arch part (11), of each inclined transition section (127) is larger than that of one end, connected with the horizontal transition sections (128).
6. The fishbone arched aluminum alloy cylinder insert structure of claim 5, wherein: first round hole (129) are all offered in the middle of first perpendicular muscle (121), second round hole (130) are all offered in the middle of slope changeover portion (127) and second perpendicular muscle (122), all offer third round hole (131) between many oblique muscle, the aperture of second round hole (130) is greater than the aperture of first round hole (129), the aperture of first round hole (129) is greater than the aperture of third round hole (131).
7. The fishbone arched aluminum alloy cylinder insert structure of claim 1, wherein: the wall thickness of the insert body (1) is 4.5-5mm, the diameter of the middle arch part (11) is 2.5 times that of a crankshaft matched with the middle arch part, the center of the middle arch part (11) is located on a connecting line perpendicular to the bottom surface through the center of the crankshaft hole, the minimum distance between the middle arch part (11) and the lower semicircle of the matched crankshaft hole is 5-5.5 mm, and the width of the insert body (1) is 10-11 mm smaller than that of a crankshaft hole bearing seat.
8. A lower cylinder block which characterized in that: the structure comprises the fishbone-shaped arched aluminum alloy cylinder body inner insert structure as claimed in any one of claims 1-7, wherein the inner insert body (1) is arranged in a bearing seat of the lower cylinder body (2), and the center of the middle arched part (11) is positioned on a connecting line perpendicular to the bottom surface through the center of a crankshaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210742628.3A CN115013179B (en) | 2022-06-27 | 2022-06-27 | Fishbone-shaped arched aluminum alloy cylinder body inner insert structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210742628.3A CN115013179B (en) | 2022-06-27 | 2022-06-27 | Fishbone-shaped arched aluminum alloy cylinder body inner insert structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115013179A CN115013179A (en) | 2022-09-06 |
| CN115013179B true CN115013179B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210742628.3A Active CN115013179B (en) | 2022-06-27 | 2022-06-27 | Fishbone-shaped arched aluminum alloy cylinder body inner insert structure |
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| CN (1) | CN115013179B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5816710A (en) * | 1997-07-01 | 1998-10-06 | Cummins Engine Company, Inc. | Engine block bearing saddle reinforcing inserts |
| CN201284702Y (en) * | 2008-09-18 | 2009-08-05 | 广西玉柴机器股份有限公司 | Crankcase with inlay casting structure |
| CN201301758Y (en) * | 2008-11-21 | 2009-09-02 | 重庆长安汽车股份有限公司 | Engine crankcase lower body insert block structure |
| JP5884266B2 (en) * | 2010-12-27 | 2016-03-15 | 日産自動車株式会社 | Bearing cap and ladder frame |
| WO2013190870A1 (en) * | 2012-06-19 | 2013-12-27 | 日産自動車株式会社 | Bearing beam |
| JP6344150B2 (en) * | 2014-08-29 | 2018-06-20 | マツダ株式会社 | Engine crankshaft bearing structure |
| US10267352B2 (en) * | 2014-10-03 | 2019-04-23 | Nissan Motor Co., Ltd. | Bearing cap of internal combustion engine |
| CN106368845B (en) * | 2016-08-30 | 2019-04-30 | 东风汽车公司 | A kind of water-cooled engine cylinder block |
| JP6904232B2 (en) * | 2017-12-14 | 2021-07-14 | トヨタ自動車株式会社 | Internal combustion engine rudder frame |
| CN113638816A (en) * | 2021-08-27 | 2021-11-12 | 东风商用车有限公司 | Engine cylinder body skirt reinforcing plate structure and arrangement structure thereof |
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2022
- 2022-06-27 CN CN202210742628.3A patent/CN115013179B/en active Active
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| CN115013179A (en) | 2022-09-06 |
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