CN-115805995-B - Vehicle and frame girder adopting non-bearing type vehicle body and preparation method thereof

CN115805995BCN 115805995 BCN115805995 BCN 115805995BCN-115805995-B

Abstract

The invention discloses a vehicle and a frame girder adopting a non-bearing type vehicle body and a preparation method thereof, wherein the frame girder is applied to the vehicle adopting the non-bearing type vehicle body and comprises a first girder body and a second girder body, the first girder body comprises an opening girder and a cover girder, the opening girder comprises a U-shaped girder section, the U-shaped girder section is provided with an inner cavity and a side opening, the side opening is communicated with the inner cavity, the second girder body is a rectangular girder, the second girder body comprises an embedding section, the embedding section is positioned in the inner cavity of the U-shaped girder section, the cover board Liang Fu covers the side opening, the cover girder is welded and fixed with the opening girder, and the opening girder is welded and fixed with the second girder body. The frame girder adopts a sectional design, so that the strength of the frame girder can be conveniently distributed according to the bearing requirement of a vehicle, and the situation of excessive or insufficient bearing capacity can be avoided to a greater extent.

Inventors

FANG CHAO
CHEN CHENGWEI
QIN JUNYUAN
YANG SHIJU
YU ENYUN
FANG YUAN
YANG HAIYAN
QIN GUOFENG
YAN GE
ZHAO SHANGYI
WEI LEXIA
ZHANG FANGLEI
LIANG JUNJIE
YAO WEI
PAN GUOJING

Assignees

柳州五菱新能源汽车有限公司

Dates

Publication Date: 20260505
Application Date: 20221121

Claims (9)

1. A frame girder applied to a vehicle adopting a non-bearing type vehicle body, which is characterized by comprising a first girder body (1) and a second girder body (2), wherein the first girder body (1) comprises an opening girder (11) and a cover girder (12), the opening girder (11) comprises a U-shaped girder section (111), the U-shaped girder section (111) is provided with an inner cavity (111 a) and a side opening (111 b), the side opening (111 b) is communicated with the inner cavity (111 a), the second girder body (2) is a rectangular girder, the second girder body (2) comprises an embedded section (21), the embedded section (21) is positioned in the inner cavity (111 a) of the U-shaped girder section (111), the cover girder (12) is covered on the side opening (111 b), the cover girder (12) and the opening girder (11) are fixedly welded, and the opening girder (11) and the second girder body (2) are fixedly welded; The U-shaped beam section (111) comprises a bottom beam part (111C) and two side beam parts (111 d) which are oppositely arranged, one end of the embedded section (21) far away from the bottom beam part (111C) is connected with the first beam body (1) through two straight-line welding seams (A), the embedded section (21) is further provided with an axial inner end and an axial outer end, the axial inner end is connected with the first beam body (1) through a U-shaped welding seam (B), and the axial outer end is connected with the first beam body (1) through a rectangular welding seam (C).
2. The frame girder according to claim 1, wherein the opening girder (11) further comprises a wing girder section (112), the U-shaped girder section (111) comprises a bottom girder section (111 c) and two side girder sections (111 d) arranged oppositely, the wing girder section (112) is connected with the side girder sections (111 d) and is located at one end of the side girder section (111 d) away from the bottom girder section (111 c), and the cover girder (12) and the wing girder section (112) are welded and fixed.
3. The frame rail of claim 2, wherein the wing beam sections (112) and the bottom beam portions (111 c) are located on either side of the side beam portions (111 d).
4. The frame rail of claim 1, wherein the cover rail (12) is also welded to the second rail body (2).
5. Frame girder according to any of claims 1-4, characterized in that the open beam (11) is further provided with at least one weld channel (113), in which weld channel (113) a channel weld (D) is formed, which channel weld (D) is intended to be connected to the second beam body (2).
6. A vehicle employing a non-load bearing body comprising a frame including two girders spaced apart in a transverse direction, wherein the girders are frame girders as claimed in any one of claims 1 to 5.
7. A method of making a frame rail of any one of claims 1-5, the method comprising: Step S1, configuring the opening beam (11), the cover plate beam (12) and the second beam body (2); s2, welding the opening beam (11) and the second beam body (2); and S3, welding the cover plate beam (12) and the opening beam (11).
8. The method of manufacturing a frame rail of claim 7, further comprising the step of S4 welding said cover rail (12) to said second rail body (2).
9. The method of manufacturing a frame rail according to claim 7 or 8, further comprising, between step S1 and step S2: and S21, wrapping the structural adhesive (3) outside the embedded section (21).

Description

Vehicle and frame girder adopting non-bearing type vehicle body and preparation method thereof Technical Field The invention relates to the technical field of vehicles, in particular to a vehicle and a frame girder adopting a non-bearing type vehicle body and a preparation method thereof. Background The vehicle body is divided into a bearing type vehicle body and a non-bearing type vehicle body, wherein the vehicle frame of the bearing type vehicle body is not provided with two independent frame girders, and the vehicle frame of the non-bearing type vehicle body is provided with two independent frame girders. In general, most passenger cars, buses, etc. use a load-bearing body, while trucks, off-road vehicles, sport Utility Vehicles (SUVs), etc. use a non-load-bearing body. At present, for a vehicle adopting a non-bearing type vehicle body, the large frame Liang Jiben of the vehicle is an integrated rectangular beam or U-shaped beam, and the structural forms of the front part and the rear part of the frame girder are completely consistent, so that the situation of excessive or insufficient bearing capacity of a local area is easily caused, and the reasonable structural design of the frame girder is not facilitated. Therefore, how to provide a solution to overcome or alleviate the above-mentioned drawbacks is still a technical problem to be solved by those skilled in the art. Disclosure of Invention The invention aims to provide a vehicle and a frame girder adopting a non-bearing type vehicle body and a preparation method thereof, wherein the frame girder adopts a sectional design, so that the strength of the frame girder can be conveniently distributed according to the bearing requirement of the vehicle, and the situation of excessive or insufficient bearing capacity can be avoided to a greater extent. The invention provides a frame girder which is applied to a vehicle adopting a non-bearing type vehicle body and comprises a first girder body and a second girder body, wherein the first girder body comprises an opening girder and a cover plate girder, the opening girder comprises a U-shaped girder section, the U-shaped girder section is provided with an inner cavity and a side opening, the side opening is communicated with the inner cavity, the second girder body is a rectangular girder, the second girder body comprises an embedding section, the embedding section is positioned in the inner cavity of the U-shaped girder section, the cover plate Liang Fu covers the side opening, the cover plate girder is welded and fixed with the opening girder, and the opening girder is welded and fixed with the second girder body. In the scheme, the frame girder adopts sectional type design, and the first roof beam body includes the open beam, and the open beam is open roof beam, and it can directly prepare through modes such as punching press, acquires conveniently, and structural design is also more nimble. Meanwhile, the first beam body further comprises a cover plate beam, and the cover plate beam can cover the side opening of the opening beam, so that the first beam body is finally presented as a closed beam, and the structural strength of the first beam body can be ensured. And the second beam body is a rectangular beam, and the second beam body is a closed beam, so that the structural strength is higher. After the assembly is completed, the structural strength of the frame girder at the first girder body part is relatively low, the structural strength of the frame girder at the second girder body part is relatively high, the frame girder can be conveniently subjected to strength distribution according to the bearing requirement of a vehicle, the situation of excessive or insufficient bearing capacity can be avoided to a large extent, and the lightweight design of the frame girder is facilitated. Optionally, the opening beam further comprises a wing plate beam section, the U-shaped beam section comprises a bottom beam part and two side beam parts which are oppositely arranged, the wing plate beam section is connected with the side beam parts and is located at one end, far away from the bottom beam part, of the side beam parts, and the cover plate beam and the wing plate beam section are welded and fixed. Optionally, the wing beam section and the bottom beam portion are located on either side of the side beam portion. Optionally, the cover plate beam is welded and fixed with the second beam body. Optionally, a carbon dioxide arc welding process is adopted between the first beam body and the second beam body. Optionally, the U-shaped beam section comprises a bottom beam part and two side beam parts which are oppositely arranged, one end of the embedded section, which is far away from the bottom beam part, is connected with the first beam body through two straight-line welding seams, the embedded section is also provided with an axial inner end part and an axial outer end part, the axial inner end part is connected with t