CN116215679A

CN116215679A - N2 type light truck type cab smaller than 7500kg

Info

Publication number: CN116215679A
Application number: CN202310246175.XA
Authority: CN
Inventors: 石志云; 邬杰; 丁志勇; 王娅琴; 廖智鹉; 张智平
Original assignee: Jiangling Motors Corp Ltd
Current assignee: Jiangling Motors Corp Ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-06

Abstract

The invention belongs to the field of light truck cab design, and particularly relates to an N2 type light truck cab with weight less than 7500 kg. According to the invention, 5 reinforcing plates are added on the basis of the original cab, so that the deformation resistance of the floor assembly is improved; the A, B upright post CBS is added, so that the composite material framework and the vehicle body are integrated, the rigidity of the cab A, B upright post is enhanced, and the anti-collision deformation capability of the cab when the cab is impacted by the A post is further improved; the door anti-collision beam adopts a thermal forming piece with the thickness of 1.6mm, so that the door anti-collision deformation capacity is enhanced. The invention can lead the light truck cab to meet the requirement of double A column impact experiments in GB26512-2021 passenger protection of commercial vehicle cab. The anti-collision deformation capacity of the light truck cab is greatly improved, and the driving safety of customers is ensured.

Description

N2 type light truck type cab smaller than 7500kg

Technical Field

The invention belongs to the field of light truck cab design, and particularly relates to an N2 type light truck cab with weight less than 7500 kg.

Background

With the continuous improvement of the traffic safety attention of commercial vehicle customers and the implementation of GB26512-2021 collision regulations in passenger protection of commercial vehicle cabs and safety technical Specifications of light trucks and small and mini passenger vehicles, the requirements on the anti-collision performance of light truck cabs are more and more severe.

GB26512-2021 "commercial vehicle cab passenger protection" for N2 type vehicle types with total mass less than 7500kg, the cab only needs to meet the conventional front impact experiment, top strength experiment and rear wall strength experiment. But the additional collision requirement-A column collision experiment for N2 type vehicles with total mass exceeding 7500kg is newly increased. The experiment simulates a vehicle impacted by a rigid cylinder across the middle region of the left and right a-pillars with an impact energy of 29.4kJ. The cab still has sufficient cab living space after impact. The traditional light truck cab is not considered in the structural design, so that the light truck on the market cannot meet the requirement of the new collision regulation.

In order to meet the requirements of GB26512-2021 'passenger protection of commercial vehicle cab', the traditional design thought is as follows: aiming at N2 type vehicle models with total mass less than 7500kg, the structure design of the cab adopts the existing light truck structure; for N2 type vehicle models with total mass greater than 7500kg, the cab needs to be redeveloped by referring to the middle and heavy truck cab structure. Thus, when designing a light truck model which spans the total mass below 7500kg and above, double stamping part die investment, welding site investment and welding tool investment are required to be invested. For a light truck type enterprise, excessive investment can result in reduced profits and even loss.

Disclosure of Invention

The invention provides a new light truck cab design, which develops a small amount of structural reinforcement by increasing a small amount of investment on the premise of meeting the collision requirement of N2 type vehicle models with total mass less than 7500 kg. These reinforcements were incorporated into cabs of class N2 vehicle models that have been developed to have a total mass of less than 7500kg, thereby deriving cabs that meet the collision requirements of class N2 vehicle models having a total mass of greater than 7500 kg. Finally, on the premise of only investment and manufacturing sites of a single cab, the light truck type spanning less than or equal to 7500kg of total mass is designed.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

a cab of an N2 type light truck type less than 7500kg, wherein a floor assembly is provided with a left rear reinforcing plate, a right rear reinforcing plate, a left front reinforcing plate, a right front reinforcing plate and a front middle reinforcing plate; a, B upright post CBS are respectively arranged in the cavity of the upright post A and the cavity of the upright post B of the vehicle body; the door impact beam uses a 1.6mm thick thermoformed part.

Further, the left rear reinforcing plate and the right rear reinforcing plate are respectively connected with the rear apron plate and the threshold reinforcing plate and are connected to the rear floor through spot welding.

Further, the front reinforcing plate and the right front reinforcing plate are respectively connected with the front apron board of the front wheel cover plate box and are connected to the joint of the front floor and the rear floor through spot welding.

Further, the front middle reinforcing plate is connected to the middle position of the front floor by spot welding.

Further, the A stand column CBS and the B stand column CBS are assembled to the A stand column cavity and the B stand column cavity in a clamping mode, and through coating and baking, structural adhesive on the surface of the CBS is foamed, so that a car body sheet metal and a CBS framework are connected.

Further, the hot formed door anti-collision beam, the water cut reinforcing plate and the door inner plate are welded to form a door inner plate assembly, and are welded with the door outer plate to form the reinforced door assembly.

According to the invention, 5 reinforcing plates are added on the basis of the cab of the N2 type light truck type with the total mass less than 7500kg, so that when the cab is impacted by the A column, the floor assembly can increase the anti-impact deformation capacity; after being coated and baked, the structural adhesive is foamed and connected with the vehicle body and the composite material framework, so that the composite material framework and the vehicle body are integrated, the rigidity of the A, B stand column of the cab is enhanced, and the collision deformation resistance of the cab when the cab is impacted by the A column is improved; the door anti-collision beam adopts a thermal forming piece with the thickness of 1.6mm, so that when the A column is impacted, the door anti-collision deformation capacity is enhanced.

By integrating the modes, the light truck cab can meet the double A column impact experiment requirements in GB26512-2021 passenger protection of commercial vehicle cab. The anti-collision deformation capacity of the light truck cab is greatly improved, and the driving safety of customers is ensured.

Drawings

FIG. 1 is a schematic view of a cab meeting the collision requirements of an N2 type vehicle model with a total mass of less than 7500 kg;

FIG. 2 is a schematic illustration of the addition of a reinforcing plate to the floor welding assembly of the present invention;

FIG. 3 is a schematic view of a thermoformed impact beam of the invention A, B incorporating CBS and door impact Liang Tihuan into the cavity of the pillar;

FIG. 4 is a schematic view showing the connection of the left rear reinforcement plate and the rear floor area related structure, the right side structure and the left side structure of the present invention are symmetrical;

FIG. 5 is a schematic view of the connection of the left front reinforcement panel to the front floor area, the right side structure being symmetrical to the left side;

FIG. 6 is a schematic view of the connection of the front middle reinforcement panel to the front floor panel of the present invention;

FIG. 7 is a schematic view showing the connection of the A pillar CBS of the present invention to the side wall and front floor area associated structures;

FIG. 8 is a schematic diagram of the connection of the B pillar CBS to the side outer panel and the rear skirt panel of the present invention;

FIG. 9 is a schematic view of the connection of a thermoformed door impact beam with a cut-to-water reinforcement panel and a door inner panel of the present invention.

Reference numerals:

1. a left rear reinforcing plate; 2. a right rear reinforcing plate; 3. a left front reinforcing plate; 4. a right front reinforcing plate; 5. front middle reinforcing plate; 6. a stand column CBS; 7. b stand column CBS; 8. thermoforming a door anti-collision beam; 9. a rear skirt plate; 10. a threshold reinforcing plate; 11. a rear floor; 12. a front wheel cover plate; 13. a front skirt plate; 14. a front floor; 15. a column A reinforcing plate; 16. a side wall outer plate; 17. cutting the reinforcing plate with water; 18. and a door inner panel.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to meet the requirement of double A column collision experiments in GB26512-2021, the passenger protection of the cab of the commercial vehicle is required to be structurally reinforced based on an N2 type vehicle cab with total mass less than 7500kg, so that the impact force received in the collision process is transmitted to the floor by a A, B upright post and a vehicle door anti-collision beam, and the space of the cab passenger meets the survival requirement after collision.

The overall structure is schematically shown in fig. 1, and in the floor assembly welding station, as shown in fig. 2: the left rear reinforcing plate 1, the right rear reinforcing plate 2, the left front reinforcing plate 3, the right front reinforcing plate 4 and the front middle reinforcing plate 5 are welded with the floor assembly through a spot welding process to form the reinforced floor assembly. Fig. 4, 5 and 6 are schematic diagrams illustrating the connection of the left and right rear reinforcement plates, the left and right front reinforcement plates, and the front and middle reinforcement plates, respectively, to the relevant parts of the floor assembly.

At the side wall and floor assembly station, as shown in fig. 7 and 8: the A stand column CBS 6 and the B stand column CBS 8 are assembled to the A stand column cavity and the B stand column cavity in a clamping manner, and the structural adhesive on the surface of the CBS is foamed after being coated and baked, so that a car body sheet metal and a CBS framework are connected.

At the door welding station, as shown in fig. 9: the thermoformed door impact beam 7, the cut reinforcing plate 17 and the door inner plate 18 are welded into a door inner plate assembly, and finally welded with the door outer plate to form the reinforced door assembly.

While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of one of ordinary skill in the art.

Claims

1. A class N2 light truck cab of less than 7500kg, characterized by: a left rear reinforcing plate, a right rear reinforcing plate, a left front reinforcing plate, a right front reinforcing plate and a front middle reinforcing plate are arranged on the floor assembly; a, B upright post CBS are respectively arranged in the cavity of the upright post A and the cavity of the upright post B of the vehicle body; the door impact beam uses a 1.6mm thick thermoformed part.

2. A class N2 light truck cab of less than 7500kg according to claim 1 wherein: the left rear reinforcing plate and the right rear reinforcing plate are respectively connected with the rear apron plate and the threshold reinforcing plate and are connected to the rear floor through spot welding.

3. A class N2 light truck cab of less than 7500kg according to claim 1 wherein: the front reinforcing plate and the right front reinforcing plate are respectively connected with the front apron plate of the front wheel cover plate box and are connected to the joint of the front floor and the rear floor through spot welding.

4. A class N2 light truck cab of less than 7500kg according to claim 1 wherein: the front middle reinforcing plate is connected to the middle position of the front floor through spot welding.

5. A class N2 light truck cab of less than 7500kg according to claim 1 wherein: the A stand column CBS and the B stand column CBS are assembled to the A stand column cavity and the B stand column cavity in a clamping mode, and through coating and baking, structural adhesive on the surface of the CBS is foamed, so that a car body sheet metal and a CBS framework are connected.

6. A class N2 light truck cab of less than 7500kg according to claim 1 wherein: the formed door anti-collision beam, the water cutting reinforcing plate and the door inner plate are welded into a door inner plate assembly and are welded with the door outer plate to form the reinforced door assembly.