CN220615951U - Front cross beam structure of lightweight frame - Google Patents
Front cross beam structure of lightweight frame Download PDFInfo
- Publication number
- CN220615951U CN220615951U CN202322364522.7U CN202322364522U CN220615951U CN 220615951 U CN220615951 U CN 220615951U CN 202322364522 U CN202322364522 U CN 202322364522U CN 220615951 U CN220615951 U CN 220615951U
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- aluminum alloy
- connecting box
- iron
- front cross
- connection box
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 51
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 abstract description 14
- 239000000306 component Substances 0.000 abstract 1
- 238000012946 outsourcing Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Body Structure For Vehicles (AREA)
Abstract
The utility model relates to the field of automobile frame structures, and discloses a front cross beam structure of a lightweight automobile frame, which comprises an aluminum alloy connecting box, an iron connecting box and a transverse supporting tube, wherein the aluminum alloy connecting box and the iron connecting box are arranged between an upper wing surface of a longitudinal beam and a lower wing surface of the longitudinal beam, the transverse supporting tube is arranged between a pair of longitudinal beams, a groove is formed in the aluminum alloy connecting box, a pair of holes are formed in the iron connecting box, the transverse supporting tube penetrates through the groove and the holes and is arranged in the aluminum alloy connecting box and the iron connecting box, the iron connecting box is of a U-shaped structure, one side of the iron connecting box is fixedly connected with the outer side of the aluminum alloy connecting box, and the other side of the iron connecting box is fixedly connected with the outer side of the web surface of the longitudinal beam. The connection between aluminum alloy component and iron, steel component is realized to this scheme adopts the form of connecting box to with iron connecting box outsourcing in aluminum alloy connecting box outside, form the constraint to aluminum alloy connecting box, reduce the thermal expansion difference between the material, improve frame overall structure's stability and intensity.
Description
Technical Field
The utility model relates to the field of automobile frame structures, in particular to a lightweight frame front cross beam structure.
Background
The frame of an automobile is the skeleton of the automobile, which carries the weight of the automobile, resists the impact force, supports the suspension system, provides rigidity and stability of the automobile body, and is a key part for ensuring the performance and safety of the automobile.
The frame is mainly formed by assembling a pair of longitudinal beams, a plurality of cross beams, hanging pieces and the like through rivets, wherein the longitudinal beams are of a C-shaped structure, the upper end and the lower end of each longitudinal beam are respectively provided with an upper longitudinal beam wing surface and a lower longitudinal beam wing surface, and a longitudinal beam web surface is arranged between the upper longitudinal beam wing surface and the lower longitudinal beam wing surface.
The traditional frame is of a steel structure, but along with the increasing strictness of energy conservation and emission reduction requirements and the development of the automobile market, the frame needs to be designed in a lightweight manner, so that aluminum alloy materials are gradually introduced into the frame manufacture. However, since the melting point of the aluminum alloy is about 660 ℃ and the melting point of the steel exceeds 1000 ℃, the conventional welding connection mode cannot be adopted between the aluminum alloy and the steel, and the material strength of the aluminum alloy and the steel material are different, the problem of soft contact surface exists during connection, the softer aluminum alloy material is easy to generate plastic deformation, and the connection strength and stability are affected, so that the development of a connection structure of the steel material and the aluminum alloy is needed.
Disclosure of Invention
The utility model aims to provide a lightweight frame front cross beam structure, which solves the problems that aluminum alloy is easy to deform and insufficient in strength in the connection of an aluminum alloy member and a steel member.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a lightweight frame front cross beam structure, including installing aluminum alloy connection box, iron connection box and the horizontal stay tube that sets up between a pair of longeron between longeron upper airfoil surface and longeron lower airfoil surface, set up the recess on the aluminum alloy connection box, set up a pair of hole on the iron connection box, the horizontal stay tube passes through recess and hole and wears to locate in aluminum alloy connection box and the iron connection box, the iron connection box is U type structure, iron connection box one side and aluminum alloy connection box outside fastening connection, opposite side and longeron ventral surface outside fastening connection.
The beneficial effects are as follows: first, because aluminum alloy material is softer than steel or iron material, it is difficult to consider the hardness of steel and iron material simultaneously if screw thread connection is adopted, if screw thread is too hard, screw thread connection can be too tight or too loose, if screw thread is too soft, the screw thread is easy to break, damage in the connection process, and the requirement of stable connection can not be met. The scheme is changed into a connecting box mode, so that the strength and the rigidity of the whole structure can be increased, and the stability and the bending resistance of the frame are improved; secondly, because the thermal expansion coefficient of the aluminum alloy is larger than that of the steel material and the iron material, the iron connecting box is wrapped outside the aluminum alloy connecting box, so that a constraint effect can be formed on the aluminum alloy connecting box, the thermal expansion difference between materials is reduced, obvious expansion or contraction caused by temperature change is avoided, excessive deformation or stress concentration in the aluminum alloy connecting box can be avoided, and the stability and strength of the integral structure of the frame are improved.
Further, the aluminum alloy connecting box comprises a pair of wing panels which are oppositely arranged and a web panel which is vertically connected between the pair of wing panels, and the groove takes the short side end part of the web panel as the bottom edge and is internally arranged along the length direction of the web panel.
Further, the web plate is also provided with a first lightening hole and a second lightening hole.
The beneficial effects are as follows: the first weight reducing hole and the second weight reducing hole are formed, so that the weight of the whole frame can be reduced, the required material consumption can be reduced, and the manufacturing cost can be reduced; in addition, due to the weight reduction of the frame, the acceleration performance, the operability and the fuel efficiency of the vehicle can be improved, and the carbon emission can be reduced.
Further, the first lightening holes are located in an end region of the web plate and the second lightening holes are located in a middle region of the web plate.
The beneficial effects are as follows: the aluminum alloy connecting box has the advantages that the distribution of materials of the aluminum alloy connecting box is more uniform, the stress condition is optimized while the load is balanced, the stress concentration degree is reduced, and the risk of deformation is reduced.
Further, the device also comprises a cab connecting frame, wherein the cab connecting frame is arranged on the part, extending out of the longitudinal beam, of the transverse supporting tube, the cab connecting frame comprises a supporting frame, and the supporting frame comprises a supporting surface and four supporting legs fixedly connected with the supporting surface.
The beneficial effects are as follows: the cab support is generally riveted on the web surface of the longitudinal beam through rivets, the cab support is integrated on the front cross beam, the riveting process of the cab is reduced, the assembly process is simplified, the time and labor force can be saved, and the production efficiency is improved.
Further, the supporting surface is provided with a mounting hole, a positioning flange is arranged in the outer side area of the end surface of the mounting hole, and the positioning flange is arranged on the upper surface of the supporting surface.
The beneficial effects are as follows: in the assembly process, due to the indication function of the positioning flange, a technician can obtain clear position references, accurate matching of the installation positions of the components is ensured, the situation of position deviation or inaccurate installation is avoided, the positioning flange provides additional supporting area, the possibility of loosening or shaking at the connection positions of the components is reduced, and the stability of connection is improved.
Further, the cab connecting frame also comprises a connecting plate, one end of the connecting plate is fixedly connected with the supporting leg, and the other end of the connecting plate is fixedly connected with the outer side of the web surface of the longitudinal beam.
The beneficial effects are as follows: the connecting strength of the cab connecting frame and the frame is improved, the load from the cab is dispersed and transmitted to the longitudinal beam, the risk of local stress concentration is reduced, and the durability and the reliability of the connection are improved.
Further, the height of the connecting plate near one end of the longitudinal beam is lower than the height near one end of the supporting leg.
The beneficial effects are as follows: the shearing resistance of the connecting plate is improved, so that the integral strength and stability of the frame are improved.
Further, the transverse supporting tube is a 20# round steel tube.
The beneficial effects are as follows: compared with a square cross beam, the cross section of the round steel pipe is more uniform in distribution, so that the moment of inertia of the round steel pipe is relatively balanced, the round steel pipe has higher torsional rigidity, the torsion and deformation of the frame in the running process can be reduced, the side inclination and balance of the vehicle body are reduced, and better control performance is provided.
Drawings
FIG. 1 is a schematic overall structure of embodiment 1 of the present utility model;
FIG. 2 is an enlarged schematic view of embodiment 1A of the present utility model;
FIG. 3 is a schematic structural diagram of an aluminum alloy junction box according to embodiments 1 and 2 of the present utility model;
FIG. 4 is a schematic overall structure of embodiment 2 of the present utility model;
fig. 5 is an enlarged schematic view at B of embodiment 2 of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the aluminum alloy connecting box 1, the belly panel 11, the groove 111, the first lightening holes 112, the second lightening holes 113, the wing panel 12, the iron connecting box 2, the transverse supporting tube 3, the cab connecting frame 4, the supporting frame 41, the supporting surface 411, the supporting legs 412, the positioning flange 42 and the connecting plate 43.
Example 1
Embodiment 1 is a lightweight frame front cross member structure substantially as shown in fig. 1-3, comprising: install aluminum alloy connection box 1, iron connection box 2 and wear to locate aluminum alloy connection box 1, iron connection box 2 and a pair of horizontal stay tube 3 between the longeron lower wing surface, horizontal stay tube 3 can select for use 20# round steel pipe, and iron connection box 2 is U type structure, and iron connection box 2 one side lock is in aluminum alloy connection box 1 outside, and the opposite side lock is in the longeron ventral outside to realize iron connection box 2 and aluminum alloy connection box 1 and the fastening connection of longeron through the rivet. Because the thermal expansion coefficient of the aluminum alloy is larger than that of the steel material and the iron material, the iron connecting box 2 is externally wrapped outside the aluminum alloy connecting box 1, so that a constraint effect can be formed on the aluminum alloy connecting box 1, and excessive deformation or stress concentration in the aluminum alloy connecting box 1 can be avoided, thereby improving the stability and strength of the whole structure of the frame.
As shown in fig. 2 and 3, the aluminum alloy junction box 1 includes a pair of wing panels 12 disposed opposite to each other and a web panel 11 vertically connected between the pair of wing panels 12, a groove 111 is formed in an end portion of a short side of the web panel 11 and along a length direction of the web panel 11, and a first lightening hole 112 and a second lightening hole 113 are further formed in the web panel 11 to reduce a material consumption, reduce an overall weight, and improve fuel economy, wherein the second lightening hole 113 is located in a middle area of the web panel 11, and the first lightening hole 112 is located in an end area of the web panel 11, so that the load of the aluminum alloy junction box 1 is balanced as much as possible, so that the overall stress is more uniform, and stress concentration and deformation risk are reduced. A pair of holes are formed in the iron connecting box 2, and the transverse supporting tube 3 is erected between the pair of longitudinal beams through the grooves 111 and the holes in the iron connecting box 2.
Example 2
As shown in fig. 4 to 5, this embodiment differs from embodiment 1 in that: the length of the transverse supporting tube 3 is larger than the width between a pair of longitudinal beams, the part of the transverse supporting tube 3 extending out of the longitudinal beams is provided with a cab connecting frame 4, the cab connecting frame 4 is arranged on the transverse supporting tube 3, a cab support is integrated onto a front cross beam, cab riveting procedures are reduced, and production efficiency is improved. The cab connecting frame 4 comprises a supporting frame 41, the supporting frame 41 comprises a supporting surface 411 and four supporting legs 412 fixedly connected with the supporting surface 411, a mounting hole is formed in the supporting surface 411, a positioning flange 42 is arranged in the outer side area of the end surface of the mounting hole, the positioning flange 42 is arranged on the upper surface of the supporting surface 411, clear position reference can be provided for mounting, accurate matching of the mounting positions of components is ensured, additional supporting area is provided by the positioning flange 42, the possibility that loosening or shaking occurs at the connecting position of the components is reduced, and the stability of connection is improved. The cab connecting frame 4 further comprises a connecting plate 43, one end of the connecting plate 43 is fixedly connected with the supporting leg 412, the other end of the connecting plate is fixedly connected with the outer side of the web surface of the longitudinal beam, the height of the connecting plate 43 close to one end of the longitudinal beam is lower than that of the connecting plate close to one end of the supporting leg 412, and the connecting plate 43 arranged obliquely can bear a part of load and shearing force, so that the stability of connection between the cab connecting frame 4 and the longitudinal beam can be improved, the load borne by the cab connecting frame 4 is prevented from being completely borne by the transverse supporting tube 3, and the risk of structural damage of the transverse supporting tube 3 is increased.
The specific implementation process is as follows: firstly, an aluminum alloy connecting box 1 is mounted on the web surface of a longitudinal beam, then an iron connecting box 2 is buckled on the outer sides of the aluminum alloy connecting box 1 and the web surface of the longitudinal beam, the relative positions of the aluminum alloy connecting box 1 and the iron connecting box 2 are adjusted, after the positions of a groove 111 and a hole are aligned, a transverse supporting tube 3 is inserted among the aluminum alloy connecting box 1, the iron connecting box 2 and a pair of longitudinal beams, the aluminum alloy connecting box 1 is fixed through welding, and the iron connecting box 2 and the aluminum alloy connecting box 1 are riveted through rivets. Finally, the cab hitch 4 is welded to the lateral support tube 3.
Directional terms, such as "upper", "lower", "left", "right", etc., in the present utility model are merely for better, more clearly explaining and understanding the present utility model, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. A lightweight frame front cross member structure, its characterized in that: including installing aluminum alloy connection box, iron connection box and the horizontal stay tube of setting between a pair of longeron between longeron upper airfoil surface and longeron lower airfoil surface, set up the recess on the aluminum alloy connection box, set up a pair of hole on the iron connection box, in aluminum alloy connection box and iron connection box were worn to locate through recess and hole to horizontal stay tube, iron connection box was U type structure, iron connection box one side and aluminum alloy connection box outside fastening connection, opposite side and longeron ventral outside fastening connection.
2. A lightweight frame front cross member structure as in claim 1, wherein: the aluminum alloy connection box comprises a pair of wing panels which are oppositely arranged and a web panel which is vertically connected between the pair of wing panels, and the groove takes the end part of the short side of the web panel as the bottom edge and is internally arranged along the length direction of the web panel.
3. A lightweight frame front cross member structure as in claim 2, wherein: the web plate is also provided with a first lightening hole and a second lightening hole.
4. A lightweight frame front cross member structure as set forth in claim 3, wherein: the first lightening holes are located in the end regions of the web plate and the second lightening holes are located in the middle region of the web plate.
5. A lightweight frame front cross member structure as in any one of claims 1 to 4, wherein: the cab connecting frame is arranged on the part, extending out of the longitudinal beam, of the transverse supporting tube, and comprises a supporting frame, wherein the supporting frame comprises a supporting surface and four supporting legs fixedly connected with the supporting surface.
6. The lightweight frame front cross member structure of claim 5, wherein: the support surface is provided with a mounting hole, a positioning flange is arranged in the outer side area of the end surface of the mounting hole, and the positioning flange is arranged on the upper surface of the support surface.
7. The lightweight frame front cross member structure of claim 6, wherein: the cab connecting frame also comprises a connecting plate, one end of the connecting plate is fixedly connected with the supporting leg, and the other end of the connecting plate is fixedly connected with the outer side of the web surface of the longitudinal beam.
8. The lightweight frame front cross member structure of claim 7, wherein: the height of the connecting plate near one end of the longitudinal beam is lower than that near one end of the supporting leg.
9. A lightweight frame front cross member structure as in claim 1, wherein: the transverse supporting tube is a 20# round steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322364522.7U CN220615951U (en) | 2023-08-31 | 2023-08-31 | Front cross beam structure of lightweight frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322364522.7U CN220615951U (en) | 2023-08-31 | 2023-08-31 | Front cross beam structure of lightweight frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220615951U true CN220615951U (en) | 2024-03-19 |
Family
ID=90211510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322364522.7U Active CN220615951U (en) | 2023-08-31 | 2023-08-31 | Front cross beam structure of lightweight frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220615951U (en) |
-
2023
- 2023-08-31 CN CN202322364522.7U patent/CN220615951U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |