CN211252806U - Special cast aluminum joint for aluminum alloy vehicle body frame structure - Google Patents
Special cast aluminum joint for aluminum alloy vehicle body frame structure Download PDFInfo
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- CN211252806U CN211252806U CN201922357255.4U CN201922357255U CN211252806U CN 211252806 U CN211252806 U CN 211252806U CN 201922357255 U CN201922357255 U CN 201922357255U CN 211252806 U CN211252806 U CN 211252806U
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- aluminum alloy
- body frame
- frame structure
- connecting groove
- aluminum
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Abstract
The utility model discloses a special cast aluminum of aluminum alloy automobile body frame construction connects, include: the first connecting part is columnar, and a first connecting groove is formed in one end of the first connecting part along the axial direction; the second connecting parts are columnar, are arranged around the other ends of the first connecting parts, and are fixedly connected with the first connecting parts at one ends respectively; the other end of the second connecting part is axially provided with a second connecting groove which is communicated with the first connecting groove; the limiting steps are respectively and fixedly arranged in the first connecting groove and the second connecting groove; wherein, cast aluminum connects for the integrated into one piece structure. The utility model provides a special cast aluminum of aluminum alloy automobile body frame construction connects can realize the different angles of aluminum alloy ex-trusions, the sectional effective connection of different section bars, guarantees to connect the bulk rigidity and the intensity at position, reduces welding length.
Description
Technical Field
The utility model belongs to the technical field of full aluminium automobile body frame attach, in particular to special cast aluminum joint of aluminum alloy automobile body frame structure.
Background
In recent years, problems such as energy crisis and environmental pollution need to be solved urgently, and in the aspect of automobile industry, lightweight design becomes a development trend and a hot spot. The lightweight design mainly comprises material lightweight, structure lightweight and processing technology lightweight. The material is mainly applied to light alloys such as aluminum magnesium alloy and the like in light weight. The structure lightweight design mainly realizes the integral weight reduction through the optimization of the structure on the premise of not sacrificing the performance. The process lightweight is to realize the processing and forming of new materials and new structures on the new processing technology. For this reason, it has been proposed to construct all-aluminum frame bodies from aluminum alloy profiles for motor vehicle bodies.
The all-aluminum frame type vehicle body structure adopts aluminum alloy extruded sections as parts, so that the universality of the material structure can be improved, and the problems of formability and the like caused by a stamping process are avoided. The effective joining of aluminum alloy profiles is the focus of current research. At present, the aluminum alloy section car body frame mainly takes welding as a main part, and the main problems comprise that: the position that needs the welding is longer, and the welding degree of difficulty is great to the section bar welding of different section shapes especially abnormal shape, and welding efficiency is lower to can't guarantee the intensity of welding position.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming present aluminum alloy ex-trusions automobile body frame and needing whole welded defect, providing a special cast aluminum of aluminum alloy automobile body frame structure connects, it can realize the different angles of aluminum alloy ex-trusions, the sectional effective connection of different section bars, guarantees the bulk rigidity and the intensity at joint position, reduces welding length to improve production efficiency.
The utility model provides a technical scheme does:
a special cast aluminum joint for an aluminum alloy vehicle body frame structure comprises:
the first connecting part is columnar, and a first connecting groove is formed in one end of the first connecting part along the axial direction;
the second connecting parts are columnar, are arranged around the other ends of the first connecting parts, and are fixedly connected with the first connecting parts at one ends respectively;
the other end of the second connecting part is axially provided with a second connecting groove, and the second connecting groove is communicated with the first connecting groove;
the limiting steps are respectively and fixedly arranged in the first connecting groove and the second connecting groove;
wherein, cast aluminum connects for the integrated into one piece structure.
Preferably, a plurality of reinforcing ribs are fixedly connected between two adjacent connecting portions.
Preferably, there are two of the second connecting portions;
one second connecting part is coaxially and fixedly connected with the first connecting part, and a first included angle alpha is formed between the other second connecting part and the first connecting part;
and the value range of the first included angle alpha is as follows: 0 < alpha < 180.
Preferably, the first included angle α is 90 °.
Preferably, there are two of the second connecting portions;
a second included angle β is formed between one of the second connecting portions and the first connecting portion, a third included angle θ is formed between the other of the second connecting portions and the first connecting portion, and a fourth included angle is formed between the two second connecting portions;
and the value range of the second included angle beta is as follows: 0 ° < β <180 °, the third angle θ has a value range of: 0 ° < θ <180 °; the value range of the fourth included angle is as follows: 0 ° < <180 °.
Preferably, β ═ θ.
Preferably, β ═ θ ═ 90 °.
Preferably, with the vertex of the profile curve of the cross section of the connecting groove as the origin, the profile curve equation of the cross section of the first connecting groove and/or the second connecting groove is:
wherein d represents the maximum width of the profile curve and h represents the maximum height of the profile curve.
Preferably, the profile curve equation of the cross section of the first connection groove and/or the second connection groove is:
wherein, a1、a2、a3… … is a rational number and is not 0; m is1、m2、m3… … is a rational number and is not 0.
Preferably, the end surface of the cast aluminum joint is connected with the aluminum alloy profile through a MIG welding seam.
The utility model has the advantages that:
(1) the utility model provides a special cast aluminum of aluminum alloy automobile body frame construction connects can realize the effective connection of the different angles of cloth, the sectional aluminum alloy ex-trusions of different section bars, reduces automobile body weight.
(2) The utility model provides a special cast aluminum of aluminum alloy automobile body frame construction connects, structural strength is higher, is of value to the rigidity that improves whole welded structure, improves whole bearing capacity.
(3) The special cast aluminum joint for the aluminum alloy vehicle body frame structure provided by the utility model only needs to be welded at the joint of the section bar and the joint, so that the welding length can be effectively reduced, and the production efficiency is improved; and simultaneously, the defects and the reduction of mechanical property caused by excessive welding positions are avoided.
Drawings
FIG. 1 is the structural schematic diagram of the aluminum alloy body frame structure special cast aluminum joint connected with the aluminum alloy section.
Fig. 2 is a schematic structural view of the cast aluminum joint special for the aluminum alloy vehicle body frame structure in embodiment 1 of the present invention.
Fig. 3 is a schematic view of the general structure of the cast aluminum joint specifically for use in the aluminum alloy vehicle body frame structure in embodiment 2 of the present invention.
Fig. 4 is a schematic side view of the cast aluminum joint special for the aluminum alloy vehicle body frame structure in embodiment 2 of the present invention.
Fig. 5 is a schematic structural view of a cast aluminum joint special for an aluminum alloy vehicle body frame structure in embodiment 3 of the present invention.
Fig. 6 is a schematic structural view of a cast aluminum joint special for an aluminum alloy vehicle body frame structure in embodiment 4 of the present invention.
Fig. 7 is a schematic structural view of a cast aluminum joint dedicated for an aluminum alloy vehicle body frame structure in embodiment 5 of the present invention.
Fig. 8 is a schematic view of the shape of a connection groove in embodiment 5 of the present invention.
Fig. 9 is a schematic structural view of a cast aluminum joint dedicated for an aluminum alloy vehicle body frame structure in embodiment 6 of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1-9, the utility model provides a special cast aluminum joint of aluminum alloy automobile body frame structure, it includes: the first connecting portion 110, the plurality of second connecting portions 120, and the plurality of limiting steps 130. The first connecting portion 110 is cylindrical, and a first connecting groove 111 is axially formed at one end of the first connecting portion 110. The second connection portions 120 are columnar, the plurality of second connection portions 120 are disposed around the other end of the first connection portion 120, and one ends of the plurality of second connection portions 120 are respectively fixedly connected to different side surfaces or end surfaces of the first connection portion 111. The other end of the second connecting portion 120 is axially opened with a second connecting groove 121, and the second connecting groove 121 is communicated with the first connecting groove 111. The plurality of limiting steps 130 are respectively and fixedly arranged in the first connecting groove 111 and the second connecting groove 121, and are used for limiting the position of the section of the aluminum alloy material when the aluminum alloy profile is connected, so that the stability of the connection of the aluminum alloy profile with the first connecting part 110 and the second connecting part 120 is ensured. Wherein, the cast aluminum joint is of an integrated structure.
Preferably, the cross-sectional shape (section) of the first connection groove 111 is the same as the outer contour shape of the first connection portion 110, and is different only in size (due to the thickness of the sidewall of the first connection portion 110), that is, the thickness of the sidewall is the same at different positions at the same section of the first connection portion 110. The cross-sectional shape (section) of the second connecting groove 121 is the same as the outer contour shape of the second connecting portion 120, and only has a different size (due to the thickness of the sidewall of the second connecting portion 120), that is, the thicknesses of the sidewall at different positions at the same section of the second connecting portion 120 are the same. And the sidewall thicknesses of the first and second connection parts 110 and 120 are the same. Therefore, the consistency of the strength and the rigidity of different parts of the cast aluminum joint can be ensured, and the cast aluminum joint can not be locally collapsed when being impacted.
When the cast aluminum joint is connected with the aluminum alloy sections, the first aluminum alloy section 101, the second aluminum alloy section 102 and the third aluminum alloy section 103 with the same or different section shapes can be respectively inserted into the first connecting groove 111 and the plurality of second connecting grooves 121, clearance fit is formed between the aluminum alloy sections and the side walls of the corresponding first connecting part or second connecting part, the end parts of the aluminum alloy sections are abutted against the limiting step 130, and then the end parts of the first connecting part 110 and the second connecting part 120 are welded with the surface of the corresponding aluminum alloy sections by adopting a welding method of Metal Inert Gas (MIG) welding; the welding mode is angle joint; the welding sequence is a continuous annular weld, the weld is a circumferential fillet weld, and the height of the weld 140 is at least 5 mm.
As a further preference, a plurality of reinforcing ribs 150 are fixedly connected between the adjacent first connecting portion 110 and the second connecting portion 120, or between two adjacent second connecting portions 120, so as to further improve the strength and rigidity of the cast aluminum joint.
The following description will be made in conjunction with specific embodiments of the aluminum alloy frame structure of the present invention.
Example 1
As shown in fig. 2, there are two second connection portions, wherein one second connection portion 120a is coaxially and fixedly connected with the first connection portion 110, and a first included angle α is formed between (the axis of) the other second connection portion 120b and (the axis of) the first connection portion 110; and the value range of the first included angle alpha is as follows: 0 < alpha < 180. The reinforcement rib 150 is connected between the first connection portion 110 and the second connection portion 120b, and the reinforcement rib 150 is connected between the second connection portion 120a and the second connection portion 120 b. The cross sections of the two second connecting grooves 121 and the first connecting groove 111 are square. And each end surface of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams. The cast aluminum joint structure of example 1 can be used for joining aluminum alloy sections having a cross-sectional shape with a square outer contour line.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 20%, and the torsional rigidity can be improved by about 30% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
Example 2
As shown in fig. 3 to 4, this embodiment is a specific example of embodiment 1, the connection manner and the sectional shape are the same as those of embodiment 1, and in embodiment 2, the first included angle α between (the axis of) the second connection portion 120b and (the axis of) the first connection portion 110 is 90 °. And each end surface of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 25%, and the torsional rigidity can be improved by about 20% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
Example 3
As shown in fig. 5, there are two second connection portions; wherein, a second included angle β is formed between (the axis of) one second connecting portion 120a and (the axis of) the first connecting portion 110, a third included angle θ is formed between (the axis of) the other second connecting portion 120b and (the axis of) the first connecting portion 110, and a fourth included angle is formed between (the axis of) the two second connecting portions 120a and 120 b; and the value range of the second included angle beta is as follows: 0 ° < β <180 °, the third angle θ has a value range of: 0 ° < θ <180 °; the value range of the fourth included angle is as follows: 0 ° <180 °; and β ═ θ. The reinforcement rib 150 is connected between the first connection portion 110 and the second connection portion 120a, the reinforcement rib 150 is connected between the first connection portion 110 and the second connection portion 120b, and the reinforcement rib 150 is connected between the second connection portion 120a and the second connection portion 120 b. The cross sections of the two second connecting grooves 121 and the first connecting groove 111 are square or parallelogram. And each end surface of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams. The cast aluminum joint structure of example 3 can be used for aluminum alloy sections having a square or parallelogram outer contour line in the joint cross section.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 40%, and the torsional rigidity can be improved by about 30% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
Example 4
As shown in fig. 6, this embodiment is a special example of embodiment 3, the connection manner and the cross-sectional shape are the same as those of embodiment 1, and in embodiment 4, the second included angle β between (the axis of) the second connection portion 120a and (the axis of) the first connection portion 110 is 90 °; a third included angle θ between (the axis of) the second connection portion 120b and (the axis of) the first connection portion 110 is 90 °; a fourth angle between the second connection portion 120a and the second connection portion 120b is 90 degrees. The cross sections of the two second connecting grooves 121 and the first connecting groove 111 are in a square shape, and each end face of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams. The cast aluminum joint structure of example 4 can be used for joining aluminum alloy sections having a cross-sectional shape with a square outer contour line.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 45%, and the torsional rigidity can be improved by about 25% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
Example 5
As shown in fig. 7 to 8, there are two second connection portions, wherein one second connection portion 120a is coaxially and fixedly connected to the first connection portion 110, and the other second connection portion 120b is disposed perpendicular to (the axis of) the first connection portion 110. The reinforcement rib 150 is connected between the first connection portion 110 and the second connection portion 120b, and the reinforcement rib 150 is connected between the second connection portion 120a and the second connection portion 120 b. The profile curve equation of the cross sections (sections) of the two second connecting grooves 121 and the first connecting groove 111 is as follows:
in the present curve equation, the vertex of the first connecting groove (the second connecting groove) is used as the origin, d represents the maximum width of the contour curve, and h represents the maximum height of the contour curve. And each end surface of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams. The cast aluminum joint structure of example 5 can be used for joining aluminum alloy sections having a cross-section with a "horseshoe" outer contour.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 30%, and the torsional rigidity can be improved by about 50% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
Example 6
As shown in fig. 9, there are two second connection portions, one of the second connection portions 120a is coaxially and fixedly connected to the first connection portion 110, and the other second connection portion 120b is disposed perpendicular to (the axis of) the first connection portion 110. The profile curve equation of the cross sections (sections) of the two second connecting grooves 121 and the first connecting groove 111 is as follows:
wherein, a1、a2、a3… … is a rational number and is not 0; m is1、m2、m3… … is a rational number and is not 0. And each end surface of the cast aluminum joint is connected with the aluminum alloy section through MIG welding seams.
The strength of the welding seam area of the aluminum alloy material is about 50% -60% of that of the base material, the area around the welding seam is a weak area of the whole structure, and the strength and the rigidity of the welded aluminum alloy section structure are obviously reduced due to the existence of the welding seam. The overall frame structure formed by welding the cast aluminum joint and the aluminum alloy section in the embodiment can effectively reduce the length of the welding seam, and compared with the structure formed by directly welding the aluminum alloy sections with the same specification, the overall bending rigidity can be improved by about 50%, and the torsional rigidity can be improved by about 20% (the result is obtained based on simulation calculation of a Hyperstudy14.0 simulation platform).
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (10)
1. The utility model provides a special cast aluminum of aluminum alloy automobile body frame construction connects which characterized in that includes:
the first connecting part is columnar, and a first connecting groove is formed in one end of the first connecting part along the axial direction;
the second connecting parts are columnar, are arranged around the other ends of the first connecting parts, and are fixedly connected with the first connecting parts at one ends respectively;
the other end of the second connecting part is axially provided with a second connecting groove, and the second connecting groove is communicated with the first connecting groove;
the limiting steps are respectively and fixedly arranged in the first connecting groove and the second connecting groove;
wherein, cast aluminum connects for the integrated into one piece structure.
2. The cast aluminum joint special for the aluminum alloy vehicle body frame structure according to claim 1, wherein a plurality of reinforcing ribs are fixedly connected between two adjacent connecting portions.
3. The aluminum alloy vehicle body frame structure specific cast aluminum joint according to claim 2, wherein the second connecting portion is two;
one second connecting part is coaxially and fixedly connected with the first connecting part, and a first included angle alpha is formed between the other second connecting part and the first connecting part;
and the value range of the first included angle alpha is as follows: 0 < alpha < 180.
4. The special cast aluminum joint for the aluminum alloy vehicle body frame structure according to claim 3, wherein the first included angle α is 90 °.
5. The aluminum alloy vehicle body frame structure specific cast aluminum joint according to claim 2, wherein the second connecting portion is two;
a second included angle β is formed between one of the second connecting portions and the first connecting portion, a third included angle θ is formed between the other of the second connecting portions and the first connecting portion, and a fourth included angle is formed between the two second connecting portions;
and the value range of the second included angle beta is as follows: 0 ° < β <180 °, the third angle θ has a value range of: 0 ° < θ <180 °; the value range of the fourth included angle is as follows: 0 ° < <180 °.
6. The cast aluminum joint special for the aluminum alloy vehicle body frame structure according to claim 5, wherein β θ.
7. The cast aluminum joint special for the aluminum alloy vehicle body frame structure according to claim 6, wherein β ═ θ ═ 90 °.
8. The aluminum alloy vehicle body frame structure special cast aluminum joint as set forth in claim 3 or 5, wherein the equation of the profile curve of the cross section of the first connecting groove and/or the second connecting groove with the vertex of the profile curve of the cross section of the connecting groove as an origin is:
wherein d represents the maximum width of the profile curve and h represents the maximum height of the profile curve.
9. The aluminum alloy vehicle body frame structure special cast aluminum joint as set forth in claim 3 or 5, wherein the profile curve equation of the cross section of the first connecting groove and/or the second connecting groove is:
wherein, a1、a2、a3… … is a rational number and is not 0; m is1、m2、m3… … is a rational number and is not 0.
10. The special cast-aluminum joint for the aluminum alloy vehicle body frame structure as recited in claim 1 or 2, wherein the section of the cast-aluminum joint is connected with the aluminum alloy section through MIG welding seam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922357255.4U CN211252806U (en) | 2019-12-25 | 2019-12-25 | Special cast aluminum joint for aluminum alloy vehicle body frame structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357255.4U CN211252806U (en) | 2019-12-25 | 2019-12-25 | Special cast aluminum joint for aluminum alloy vehicle body frame structure |
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| CN211252806U true CN211252806U (en) | 2020-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816686A (en) * | 2019-12-25 | 2020-02-21 | 吉林大学 | Special cast aluminum joint for aluminum alloy vehicle body frame |
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- 2019-12-25 CN CN201922357255.4U patent/CN211252806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816686A (en) * | 2019-12-25 | 2020-02-21 | 吉林大学 | Special cast aluminum joint for aluminum alloy vehicle body frame |
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