CN203544138U - Light-duty passenger car body top cover skeleton structure - Google Patents

Abstract

The utility model relates to a skeleton structure of a light-weight bus body top cover, which belongs to the technical field of bus bodies. It includes longitudinal beams and cross beams, the longitudinal beams and cross beams are connected to each other as a whole, the intersections of the longitudinal beams and the cross beams are fixedly connected by rivets through connecting pieces, and the longitudinal beams include a The side windshield upper beam, the air duct installation longitudinal beam, the air conditioner installation longitudinal beam, the roof window longitudinal beam and the connecting longitudinal beam connected with the side frame of the vehicle body, the beams include the top cover bending beam and the roof window beam. The roof frame structure of the utility model forms a very stable force-bearing structure, thereby improving the strength of the upper structure of the vehicle body frame, and can effectively reduce the deformation of the roof frame when the vehicle rolls over to ensure the safety of passengers .

Description

A light-weight bus body roof skeleton structure

technical field

The utility model belongs to the technical field of passenger car bodies, in particular to a skeleton structure of a lightweight passenger car body top cover.

Background technique

At present, the traditional bus body is assembled and welded by six large assemblies, including the front wall assembly, the rear wall assembly, the left/right side wall assembly, the top cover assembly and the underframe assembly. The body itself is heavy, which increases the engine load, thereby increasing fuel consumption, reducing payload, and reducing fuel economy. In the traditional installation structure, the roof beam of the roof frame is connected to the roof side beam, and the roof side beam is further welded to the side wall upper longitudinal beam of the side wall frame along the longitudinal direction of the vehicle. The traditional roof frame structure has the following disadvantages: 1. The welded structure at the junction of the side wall frame and the roof frame is a stress concentration area. When the car rolls over, the top of the car, especially the roof frame, often directly Impacted by the ground, the entire body will be severely distorted and deformed, especially in the upper part of the car, which will cause serious deformation of the roof frame to the inside of the car, and thus invade the interior space where the passengers in the car are located, thus seriously endangering the safety of the car. The life safety of the occupants; 2. The traditional roof structure is essentially a rigid connection structure. During the normal driving process of the car, since the main part of the roof frame is basically in a suspended state, the car roof frame will be damaged due to its own weight and The road surface has a certain elastic amplitude, and this elastic amplitude will be transmitted to the joint between the roof frame and the side wall frame. Since the connection part is rigidly connected and cannot absorb vibration, and the side frame is rigidly connected to the floor frame or the frame, the roof frame will repeatedly pull and compress the side frame. And the compression force will be converted into the rapid and severe micro-vibration of the side frame, which will cause the side window glass installed on the side frame to vibrate violently, affecting the ride comfort of the vehicle; 3. From the perspective of the stressed structure, in order To ensure the support of the roof frame that meets the mechanical requirements during the normal driving of the car, it is necessary to make the roof beam and the side pillars form a closed stress ring in the same cross section of the car, so the side pillars of the side frame and the The roof beams of the roof frame must be in the same cross-section of the car, thus limiting the layout of the side pillars and affecting the aesthetics of the side window glass, which is not conducive to universal design.

Utility model content

The purpose of the utility model is to aim at the defects of the prior art, and provide a light-weight passenger car body roof frame structure with light weight, no welding pollution, stable structural strength and high production efficiency.

The technical solution adopted by the utility model is: a light-weight passenger car body roof skeleton structure, which includes longitudinal beams and cross beams, the longitudinal beams and cross beams are connected to each other to form a whole, and the intersection of the longitudinal beams and cross beams Connectors are used to fix the connection through rivets, and the longitudinal beams include the side windshield upper beams, the air duct installation longitudinal beams, the air conditioner installation longitudinal beams, the roof window longitudinal beams, and the connection Longitudinal beams, the cross beams include top cover curved beams and roof window beams.

Further, the upper beam of the side windshield is a hollow profile with an arc-shaped cross-section, and reinforcing ribs are provided inside the upper beam of the side windshield.

Further, the longitudinal beams and cross beams are aluminum profiles.

Furthermore, the connecting piece is L-shaped angle aluminum.

In the utility model, the upper curved beam on the top cover and the side column of the vehicle body are connected and fixed by the integral through-type side windshield upper beam to form an upper and lower closed stress ring. The layout position of the pillars is not limited, and the side window glass can be divided into blocks according to the shape of the whole vehicle, which is beneficial to improve the aesthetics of the vehicle. In addition, the roof frame forms a very stable force-bearing structure, thereby increasing the strength of the upper structure of the body frame, and effectively reducing the deformation of the roof frame when the vehicle rolls over to ensure the safety of passengers.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Figure 2 is an enlarged schematic diagram of the local structure at the connection between the longitudinal beam and the beam;

Fig. 3 is a schematic cross-sectional view of the upper beam of the side windshield.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Figure 1, the utility model includes longitudinal beams and cross beams, and the longitudinal beams and cross beams are connected to each other as a whole. 8 is L-shaped, and the longitudinal beams and beams are all aluminum profiles. As shown in Figure 1, the longitudinal beams include side windshield upper beams 1, air duct installation longitudinal beams 2, air conditioner installation longitudinal beams 3, roof window longitudinal beams 4 and connecting beams connected to the side frame of the vehicle body through the left and right sides. Longitudinal beams 5 and crossbeams include top cover curved beams 6 and roof window beams 7.

As shown in Figure 3, the upper beam 1 of the side windshield is a hollow profile with an arc-shaped section. The upper beam 1 of the side windshield is provided with a reinforcing rib 1.1 inside, and its length is the same as that of the roof of the vehicle body, which is used to connect the roof of the bus body The frame and the side frame not only avoid the bending deformation of the transverse square tube of the roof frame, but also improve the structural strength and torsional rigidity of the upper part of the vehicle body; at the same time, the outer surface of the upper beam of the side windshield can be directly used as the outer surface of the vehicle body, thereby reducing the The width of the small roof skin is smaller than the maximum rolling width of the domestic aluminum alloy plate, and the integral roof skin is realized without block welding, reducing weld seams and avoiding water leakage.

The upper curved beam 6 of the roof frame and the side column of the vehicle body are connected and fixed by the integral through-type side windshield upper beam 1 to form an upper and lower closed force-bearing ring. The layout position of the pillars is not limited, and the side window glass can be divided into blocks according to the shape of the whole vehicle, which is beneficial to improve the aesthetics of the vehicle. In addition, the roof frame forms a very stable force-bearing structure, thereby improving the strength of the upper structure of the body frame, and can effectively reduce the deformation of the roof frame and ensure the safety of passengers when the vehicle rolls over. When the vehicle is running, when the elastic vibration force of the roof frame is transmitted to the joint between the roof frame and the side wall frame, the structure of the upper beam 1 of the side windshield can effectively absorb the buffer vibration, thereby significantly reducing The rapid micro-vibration of the side wall frame is eliminated, so that the side window glass basically does not vibrate during the normal driving process of the car, thereby improving the strength of the roof frame. Another feature of this technical solution is that not only the roof frame of the vehicle body is an aluminum alloy profile, but also the connection between the roof frames is fixed by angle aluminum 8 through rivets, thereby canceling the traditional frame welding connection method, avoiding welding pollution, and workers Only need to use "angle aluminum + rivets" to realize the assembly of the entire roof frame of the car body, the operation is simple, and the labor skills of the workers are not high. In addition, due to the light weight of aluminum profiles, it can not only reduce the labor intensity of workers, but also has the characteristics of light weight, long service life, anti-tilt, strong torsion ability, and high fuel economy.

Claims (3)

1. A light-weight passenger car body roof skeleton structure, which includes longitudinal beams and crossbeams, which are connected as a whole between the longitudinal beams and crossbeams, and is characterized in that: the intersection of the longitudinal beams and crossbeams adopts connectors Fixed and connected by rivets, the longitudinal beams include side window upper beams, air duct installation longitudinal beams, air conditioner installation longitudinal beams, roof window longitudinal beams and connecting longitudinal beams, which are connected to the side wall frame of the vehicle body through the left and right ends. The crossbeams include roof-curved crossbeams and roof window crossbeams, and the side windshield upper beams are hollow profiles with arc-shaped sections, and reinforcing ribs are provided inside the sidewindow upper beams. the 2. A light-weight bus body roof frame structure according to claim 1, characterized in that: the longitudinal beams and cross beams are all aluminum profiles. the 3. A light-weight bus body roof frame structure according to claim 1, characterized in that: the connecting piece is L-shaped angle aluminum. the

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