Vehicle body front longitudinal beam structure

[0048]Example 1

[0049]Such asFigure 3-5 As shown, the body front stringed beam structure includes a front stringer assembly 10, an upper beam assembly 20, a front lever connection plate assembly 30, an upper beam front section assembly 40, and the front anti-collision beam suction box 50 and the front anti-collision beam assembly 80.

[0050]Such asFigure 6-10 Design, the front stringers connecting plate assembly 30 includes a front longitudinal beam connecting plate body 31 comprising an open casing, the in vivo opposite the open bottom. A front strier connection reinforcing plate 32 is provided on the wall, and the front longitudinal beam is connected to the upper wall and the lower wall of the casing, and there is a suction on the front wall of the casing. The canopy mounting bracket 34, and the front wall of the casing is provided with a front longitudinal beam connecting sealing plate 33, the outer end of the upper wall and the lower wall is provided with welding flange 35, and the casing is from the front wall. The back wall has a cross section that gradually becomes small, so that the collision force can be directed to the front stringers assembly 10, and some collision force is transmitted from the bottom wall to the upper beam front section assembly. Such asFigure 19-20 Design, the welding flap 35 of the front stringer connection plate body 31 and the front longitudinal beam connection plate 33 are welded to the front longitudinal beam assembly 10, the bottom wall of the casing and the upper side. The front end welding of the beam pre-segment assembly 40 is fixed.

[0051]Such asFigure 14-18 As shown, the front anti-collision beam suction cartridge assembly 50 is composed of a suction cartridge body 51, a suction cartridge mounting plate 55, and a resist cartridge 56; the soon cartridge body 51 is from the suction cartridge The plate 52, the suction cassette lower plate 53 and the suction cartridge inner plate 54 are composed, and the upper plate 52 and the sides of the suction box lower plate 53 pass through spot welding to form the front end surface and the rear end surface open. The body structure is provided between the suction cartridge inner plate 54 between the suction cartridge 52 and the absorbent cartridge lower plate 53 and respectively with the upper plate 52 and the absorbing cassette 53, respectively. Surface spot welding. The soil fixing cartridge mounting plate 55 is secured to the rear end surface of the suction cartridge body 51 by MIG welding, and the absorbing cassette front sealing plate 56 is welded to the front end surface of the suction cartridge body 51 using MIG welding. . Such asFigure 3-5 As shown in Figures 25-28, the absorbing cassette front sealing plate 56 is fixed to the front anti-collision beam, and the absorbent cartridge mounting plate 55 and the front vertical beam assembly 10 The front end is fixedly coupled by the bolt 60 and the bobbine nut 70, and the absorbent cartridge mounting plate 55 is fixed to the adapter cartridge mounting bracket 34 of the front longitudinal beam connecting plate assembly 30 securely coupled by the bolt 60 and the bolt nut 70. The soil fitting cartridge body 51 has a cross section that gradually larger as a front end to the rear end, which facilitates the collision force from the front anti-collision beam assembly to the front stringers assembly 10 and the front beam connecting plate assembly 30 .

[0052]Such asFigure 11-13 As shown, the upper side beam front section 40 is composed of an upper beam front segment outer plate 41, an upper beam front segment reinforcing plate 43, and the upper beam front end reinforcing plate 43 welded to the front side beam. On the plate 42, and the upper beam front section outer plate 41 is welded to the front side of the upper side.

[0053]Such asFigure 23-24As shown, the rear end of the upper beam front section 40 is welded to the upper side beam.

[0054]Figure 29 The bias collision (including 25% offset, 40% offset) or the conversion of the collision force during the collision test process is shown. The present embodiment passes the assembly of the front longitudinal beam connecting plate assembly, in particular, the front beam connecting plate assembly has a unique structural design, which is connected to the front anti-collision beam suction cartridge assembly, front The beam assembly and the front end assembly of the upper beam can effectively transmit the collision force to the front torch assembly, and transmitted to the upper beam assembly by the upper beam front section, optimized the collision force path, Reduce or avoid the invasion of the pre-engine compartment to the crew, enhance the driver's safety. In addition, the combination of front anti-collision beam assembly and the assembly of the front beam connecting plate assembly and the structural design, which significantly improves the capability capacity of the front end of the body, significantly enhances the absorbent effect of the preceding anti-collision beam, which can guarantee Only the anti-collision beam assembly is destroyed, reducing the load of the cabin tank, the skeleton structure of the cabin is not damaged, so only the collision beam is required to replace the collision beam after a serious collision, reducing maintenance costs. The body front longitudinal beam structure of the present embodiment can reduce the strength requirements of the casing stringers, so that the material of the body cabin longitudinal beam can reduce the material thickness, intensity grade, and the like, thereby achieving the purpose of reducing the weight loss.