CN115489607A - Longeron of lightweight welding aluminum alloy sub vehicle frame and mounting structure thereof - Google Patents
Longeron of lightweight welding aluminum alloy sub vehicle frame and mounting structure thereof Download PDFInfo
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- CN115489607A CN115489607A CN202211225723.2A CN202211225723A CN115489607A CN 115489607 A CN115489607 A CN 115489607A CN 202211225723 A CN202211225723 A CN 202211225723A CN 115489607 A CN115489607 A CN 115489607A
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- longitudinal beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
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Abstract
The invention belongs to the technical field of aluminum alloy auxiliary frames, and provides a longitudinal beam for a lightweight welded aluminum alloy auxiliary frame and a mounting structure thereof
The release structure of the bending mode is characterized in that a front cross beam, a vehicle body mounting bracket and an energy absorption box mounting bracket are arranged at the front part of a longitudinal beam. The invention has the advantages that the crumple characteristic can be induced through the stamping folding groove at the bottom of the rear end of the longitudinal beam and the circular hole at the top of the rear end of the longitudinal beam, so that the auxiliary frame can be used for preventing the auxiliary frame from being collidedIn the process, the deformation form of the longitudinal beam is achieved by transmitting the front cross beam to the longitudinal beam
The mould mode of bending can effectively protect power assembly and front deck high pressure casting part, reduces after-sale cost of maintenance, improves the vehicle security.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy auxiliary frames, and relates to a longitudinal beam for a lightweight welded aluminum alloy auxiliary frame and a mounting structure thereof.
Background
Because power assembly overall arrangement is succinct than traditional fuel vehicle power assembly around the electric automobile, the overall arrangement requirement of sub vehicle frame is more level and more smooth, the application space that has provided for aluminum alloy ex-trusions welding sub vehicle frame, and the aluminium alloy possesses good formability and the property of collapsing, high production efficiency, the yields is high, crashproof roof beam around whole car, collision safety structure spare such as threshold roof beam and sub vehicle frame play important role, be applied to the sub vehicle frame with the aluminium alloy, do benefit to whole car collision demand, longeron collision energy-absorbing problem is not considered in the overall structure design of current sub vehicle frame, sub vehicle frame is in the collision process like this, will transmit the impact to longeron department because unable release, cause the deformation of longeron, thereby influence protection power assembly and front deck high pressure casting part, after-sale cost of maintenance is improved, vehicle security is poor.
Disclosure of Invention
The invention aims to solve the technical problem and provides a longitudinal beam of a lightweight welded aluminum alloy auxiliary frame and an installation structure thereof, which can effectively protect a power assembly and a front cabin high-pressure casting part, reduce the after-sale maintenance cost and improve the vehicle safety.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a longeron of lightweight welding aluminum alloy sub vehicle frame, its characterized in that includes the main part by aluminum alloy extrusion moulding, the cross-section of main part is day style of calligraphy, the front end of main part seted up U type groove, be provided with on the rear end of main part and match with U type groove and merge and guarantee the longeron according to the collision process at the auxiliary frame in the auxiliary frame
Release structure of type bending mode.
In foretell longeron of lightweight welding aluminum alloy sub vehicle frame, the release structure including set up at the punching press fluting of main part rear end bottom and set up the circular port at main part rear end top, the punching press fluting be the V style of calligraphy.
In the longitudinal beam of the lightweight welded aluminum alloy subframe, the cross section of the main body has a first cross section and a second cross section, the circular hole penetrates through the upper part of the first cross section and the upper part of the second cross section, and the punched folding groove is positioned at the bottom of the second cross section.
In the longitudinal beam of the lightweight welded aluminum alloy auxiliary frame, the circular hole is positioned right above the stamping folding groove.
In foretell longeron of lightweight welding aluminum alloy sub vehicle frame, U type groove be located first cross-section, U type groove on be provided with and turn to quick-witted pressure riveting sleeve pipe.
The invention also provides a mounting structure of the longitudinal beam of the lightweight welded aluminum alloy auxiliary frame, which is characterized by comprising the longitudinal beam, wherein the front part of the longitudinal beam is provided with a front cross beam, a vehicle body mounting bracket and an energy absorption box mounting bracket, the energy absorption box mounting bracket is connected with the front part of the front cross beam, one end of the longitudinal beam is connected with the rear part of the front cross beam, and the vehicle body mounting bracket is connected with the rear part of the front cross beam and the side part of the longitudinal beam.
In the mounting structure of the longitudinal beam of the lightweight welded aluminum alloy auxiliary frame, the cross section of the vehicle body mounting bracket is in a shape like a Chinese character ri, the vehicle body mounting bracket is provided with a first cavity and a second cavity, and a front step lap joint opening is formed between the front part of the first cavity and the front part of the second cavity.
In the mounting structure of the longitudinal beam of the lightweight welded aluminum alloy auxiliary frame, a rear step overlapping opening is formed between the rear part of the first cavity and the rear part of the second cavity, and the rear step overlapping opening is located beside the U-shaped groove.
In the above mounting structure for the longitudinal beam of the lightweight welded aluminum alloy subframe, a first lap welding connection surface is arranged between the rear part of the first cavity and the longitudinal beam, the first lap welding connection surface is positioned on the side part of the first cross section of the longitudinal beam, a second lap welding connection surface is arranged between the rear part of the second cavity and the longitudinal beam, and the second lap welding connection surface is positioned on the side part of the second cross section of the longitudinal beam.
In foretell mounting structure of longeron of lightweight welding aluminum alloy sub vehicle frame, the longeron divide into left longeron and right longeron, be connected with middle cross beam between left longeron and right longeron, middle cross beam and longeron between be connected with crossbeam reinforcing bracket.
Compared with the prior art, the auxiliary frame has the advantages that the U-shaped groove is designed at the front end of the Y-shaped longitudinal beam, the problem of interference between the longitudinal beam and a steering engine sheath is solved, meanwhile, the stamping folding groove at the bottom of the rear end of the longitudinal beam and the circular hole at the top of the rear end of the longitudinal beam are matched, the collapse characteristic can be induced, the auxiliary frame is transmitted to the longitudinal beam through the front cross beam at the front part in the collision process, and the deformation form of the longitudinal beam reaches the deformation form of the longitudinal beam
The mould mode of bending can effectively protect power assembly and front deck high pressure casting part, reduces after-sale cost of maintenance, improves the vehicle security.
Drawings
FIG. 1 is a schematic perspective view of a longitudinal beam of the lightweight welded aluminum alloy subframe;
FIG. 2 is an enlarged view of the punched folded slot in FIG. 1;
FIG. 3 is a schematic cross-sectional structural view of a stringer of the present lightweight welded aluminum alloy subframe;
FIG. 4 is a schematic structural view of the present side rail, front cross member and vehicle body after mounting the bracket;
FIG. 5 is a perspective view of the front cross member;
fig. 6 is a schematic structural view of the lightweight welded aluminum alloy subframe of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting to the scope of the present invention.
In the figure, the stringer 100; a main body 101; a first cross-section 101a; a second cross-section 101b; a U-shaped groove 200; punching a folded slot 300; a circular hole 400; the steering gear is pressed and riveted with a sleeve 500; a front cross member 600; a vehicle body mounting bracket 700; a first cavity 701; a second cavity 702; a rear step lap joint 703; a front step lap joint 704; a first lap weld joint surface 705; a second lap weld joint face 706; a crash box mounting bracket 800; a middle cross member 900; the cross beam reinforces the bracket 1000.
As shown in figure 1, the longitudinal beam 100 of the lightweight welded aluminum alloy auxiliary frame comprises a main body 101 formed by aluminum alloy in an extrusion mode, the cross section of the main body 101 is in a shape like a Chinese character ri, the wall thickness size range of the longitudinal beam 100 is +/-2 mm, the length and width size range of the cross section is +/-15 mm, the development requirements of various auxiliary frame longitudinal beams 100 can be met, a U-shaped groove 200 is formed in the front end of the main body 101, the U-shaped groove 200 is mainly used for avoiding a gap of a steering engine, the problem that the longitudinal beam 100 and a steering engine press-riveting sleeve 500 are solved, the biggest innovation of the patent is that the rear end of the main body 101 is provided with the U-shaped groove 200, the U-shaped groove 200 is matched with the longitudinal beam 100, and the longitudinal beam 100 is guaranteed to be pressed and riveted in the collision process of the auxiliary frame in a collision process
The release structure of the bending mode, wherein when the whole auxiliary frame is impacted, the impact energy is transmitted to the longitudinal beam 100 for absorption and transmission, the U-shaped groove 200 and the release structure are mainly utilized in the patent, so that the energy is released, and the deformation form of the longitudinal beam 100 is achieved during the impact process of the auxiliary frame
The bending mode effectively protects the power assembly and the front cabin high-pressure casting part, reduces the after-sale maintenance cost and improves the vehicle safety.
As shown in fig. 2 and 3, in detail, the releasing structure includes a punching crease 300 provided at the bottom of the rear end of the main body 101 and a circular hole 400 provided at the top of the rear end of the main body 101, the punching crease 300 is V-shaped, where the main body 101 has a first cross section 101a and a second cross section 101b in cross section, the circular hole 400 penetrates through the upper portion of the first cross section 101a and the upper portion of the second cross section 101b, the punching crease 300 is located at the bottom of the second cross section 101b, the circular hole 400 is located right above the punching crease 300, as a further optimization, the U-shaped groove 200 is located on the first cross section 101a, the steering machine riveting sleeve 500 is provided on the U-shaped groove 200, where the steering machine riveting sleeve 500 is provided inside the U-shaped groove 200 of the longitudinal beam 100, utilize cold joining process to solve the influence that adopts welding mode welding deformation to sub vehicle frame overall dimension, and reduce the welding seam inefficacy risk, here the sub vehicle frame is in the collision energy transmission that the in-process produced of collision 100 departments to longeron, because the existence of U type groove 200, whole longeron 100 will produce the state of upwards rolling over like this, simultaneously again because circular port 400 and the punching press fluting 300 that is the V-arrangement have, circular port 400 and punching press fluting 300 are equivalent to the induced opening that contracts of bursting like this, just with energy induction to the rear end, just will produce the state of bending down in punching press fluting 300 departments, make this sub vehicle frame reach in positive 100% rigid wall collision operating mode like this
The type mode of bending, the collision mode of collapsing satisfies whole car requirement, satisfies whole car and bends the mode demand to sub vehicle frame collision.
As shown in fig. 4, 5 and 6, the present disclosure further provides a mounting structure for a longitudinal beam of a lightweight welded aluminum alloy subframe, including the longitudinal beam 100 in fig. 1, where a front cross beam 600, a body mount 700 and a crash box mount 800 are disposed at the front of the longitudinal beam 100, the front cross beam 600 is integrally arc-shaped, the front cross beam 600 is mainly designed by a three-cavity structure, the middle reinforcing rib is disposed to play an important role in transmitting collision energy, the wall thickness of the front cross beam 600 is ± 1mm, the length and width of the cavity are ± 10mm, and the angle variation range is ± 10 °, so as to meet various subframe performance development requirements, the crash box mount 800 is connected to the front of the front cross beam 600, one end of the longitudinal beam 100 is connected to the rear of the front cross beam 600, the body mount 700 is connected to the rear of the front cross beam 600 and the side of the longitudinal beam 100, the crash box mount 800 is used for mounting a crash box, the body mount 700 serves as a crash energy transmitting bridge, the crash energy is transmitted through the body mount 800, the body mount 700, the rear crash box mount 700, the longitudinal beam 100, and the rear side of the rear cross beam 100, and the subframe 900, so as to meet the requirements of a crash box.
The section of the vehicle body mounting bracket 700 is in a shape of Chinese character 'ri', the vehicle body mounting bracket 700 is provided with a first cavity 701 and a second cavity 702, a front step lap joint 704 is arranged between the front part of the first cavity 701 and the front part of the second cavity 702, a rear step lap joint 703 is arranged between the rear part of the first cavity 701 and the rear part of the second cavity 702, the rear step lap joint 703 is positioned beside the U-shaped groove 200, the problem of height difference connection of a gap position between the front cross beam 600 and the U-shaped groove 200 of the longitudinal beam 100 can be solved through the front step lap joint 704 and the rear step lap joint 703, a first lap joint welding connection surface 705 is arranged between the rear part of the first cavity 701 and the longitudinal beam 100, the first lap joint welding connection surface 705 is positioned at the side part of the first section 101a of the longitudinal beam 100, a second lap joint welding connection surface 706 is arranged between the rear part of the second cavity 702 and the longitudinal beam 100, the second lap welding connection surface 706 is located on the side portion of the second cross section 101b of the longitudinal beam 100, on one hand, collision energy can be better transmitted to the longitudinal beam 100 for transmission and absorption through the first lap welding connection surface 705 and the second lap welding connection surface 706, on the other hand, lap welding consisting of two surfaces is formed, the length of a welding seam is prolonged, the welding strength of the area is improved, and fatigue risk is reduced; the performance indexes of the whole frame structure in all aspects meet the requirements of the whole vehicle, the welding and lapping structure is stable and reliable,
and thin-walled aluminum profiles such as the front cross beam 600, the longitudinal beam 100 and the vehicle body mounting bracket 700 can be extruded through profile wall thickness adjustment, the performance requirements of the auxiliary frame under different load conditions are met, the flexibility is high, the advantages of collapse energy absorption of the extruded profiles are fully exerted, the collision requirements of the auxiliary frame on the whole vehicle are met, the safety is high, the yield of the utilized profiles is high, the size precision is high, the production efficiency is high, and the product development and production cost is reduced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (10)
1. The utility model provides a longeron of lightweight welding aluminum alloy sub vehicle frame, its characterized in that includes the main part by aluminum alloy extrusion moulding, the cross-section of main part is day style of calligraphy, the front end of main part seted up U type groove, be provided with on the rear end of main part and match with U type groove and merge and guarantee the longeron according to the collision process at the auxiliary frame in the auxiliary frame
Release structure of type bending mode.
2. The longitudinal beam of a lightweight welded aluminum alloy auxiliary frame as claimed in claim 1, wherein the releasing structure comprises a stamped folded groove formed in the bottom of the rear end of the main body and a circular hole formed in the top of the rear end of the main body, and the stamped folded groove is V-shaped.
3. The longitudinal beam of the lightweight welded aluminum alloy subframe as claimed in claim 2, wherein the cross section of the main body has a first cross section and a second cross section, the circular hole penetrates through the upper portion of the first cross section and the upper portion of the second cross section, and the punched folded groove is located at the bottom of the second cross section.
4. The longitudinal beam of the lightweight welded aluminum alloy subframe as claimed in claim 3, wherein the circular hole is located right above the punched folded groove.
5. The longitudinal beam of the lightweight welded aluminum alloy subframe as claimed in claim 4, wherein the U-shaped groove is located on the first cross section, and a steering gear rivet pressing sleeve is arranged on the U-shaped groove.
6. A mounting structure of a longitudinal beam of a lightweight welded aluminum alloy auxiliary frame is characterized by comprising the longitudinal beam disclosed by claim 4, wherein a front cross beam, a vehicle body mounting bracket and an energy absorption box mounting bracket are arranged at the front part of the longitudinal beam, the energy absorption box mounting bracket is connected to the front part of the front cross beam, one end of the longitudinal beam is connected to the rear part of the front cross beam, and the vehicle body mounting bracket is connected to the rear part of the front cross beam and the side part of the longitudinal beam.
7. The structure of claim 6, wherein the body mount bracket has a cross-section in the shape of a Chinese character 'ri', the body mount bracket having a first cavity and a second cavity, and a front step lap joint between a front portion of the first cavity and a front portion of the second cavity.
8. The mounting structure for the longitudinal beam of the lightweight welded aluminum alloy subframe as claimed in claim 7, wherein a rear step overlapping opening is formed between the rear portion of the first cavity and the rear portion of the second cavity, and the rear step overlapping opening is located beside the U-shaped groove.
9. The mounting structure for the longitudinal beam of the lightweight welded aluminum alloy subframe as claimed in claim 8, wherein a first lap welding joint surface is provided between the rear part of the first cavity and the longitudinal beam, the first lap welding joint surface is located on the side of the first cross section of the longitudinal beam, a second lap welding joint surface is provided between the rear part of the second cavity and the longitudinal beam, and the second lap welding joint surface is located on the side of the second cross section of the longitudinal beam.
10. The structure of claim 9, wherein the side members are divided into left and right side members, a center cross member is connected between the left and right side members, and a cross member reinforcing bracket is connected between the center cross member and the side member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211225723.2A CN115489607A (en) | 2022-10-09 | 2022-10-09 | Longeron of lightweight welding aluminum alloy sub vehicle frame and mounting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211225723.2A CN115489607A (en) | 2022-10-09 | 2022-10-09 | Longeron of lightweight welding aluminum alloy sub vehicle frame and mounting structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115489607A true CN115489607A (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211225723.2A Pending CN115489607A (en) | 2022-10-09 | 2022-10-09 | Longeron of lightweight welding aluminum alloy sub vehicle frame and mounting structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115489607A (en) |
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2022
- 2022-10-09 CN CN202211225723.2A patent/CN115489607A/en active Pending
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