CN202147725U - Car frame structure - Google Patents

Abstract

The utility model relates to a skeleton structure of a vehicle body, and aims to provide a skeleton structure which adopts a steel pipe form instead of a traditional steel plate tailor-welded structure. The frame structure of the vehicle body is made of steel pipes. The frame structure of the vehicle body includes a lower chassis module and an upper frame module. The connection points between the lower chassis module and the upper frame module are fixed connections. The lower chassis The modules are thicker than the steel tubes used for the upper frame modules. The beneficial effects of the utility model are: the steel pipe form is used instead of the traditional steel plate tailor-welded structure, the steel pipe skeleton is light in weight, and the skeleton adopts a criss-cross connection form, which can bear high strength and load, which not only meets the requirements of light weight but also It has good strength and is suitable for the body frame structure of miniature cars.

Description

Body frame structure

technical field

The utility model relates to a combined frame structure of a vehicle frame, that is, a load-carrying body structure, in particular to a body frame structure of a miniature vehicle.

Background technique

With the rapid development of the automobile industry, there have been problems such as automobile energy shortage and road congestion, and many small cars have evolved, mainly for the purpose of energy saving and emission reduction. However, the traditional body structure is made of steel plates. It is difficult to reduce the weight of the frame, so there is an urgent need for a lighter body structure to achieve the purpose of energy saving.

Chinese patent notification number CN100404347C discloses a full load-bearing body, which forms an integral frame with a front frame, a rear frame, a left frame, a right frame, a roof frame and an underframe for the entire vehicle. A new type of car body structure, through each node, using columns, or longitudinal beams, or diagonal braces, or beams, or curved beams, or various panels to make the vehicle skeleton run through front and rear, connect up and down, and connect left and right. Form a closed force ring structure. The full-loaded vehicle body is heavy and difficult to ensure sufficient strength due to its complex structure.

Contents of the invention

The purpose of the utility model is to provide a skeleton structure which adopts the form of steel pipe to replace the traditional steel plate tailor-welded structure, so as to solve the problems of heavy weight and low strength of the body skeleton existing in the background technology.

In order to achieve the above object, the technical solution of the utility model is: a car body skeleton structure, the skeleton units of which are all made of steel pipes, the car body skeleton structure includes a lower chassis module and an upper frame module, the lower chassis module and the upper The connection points of the vehicle frame modules are fixed connections, and the lower chassis modules are thicker than the steel pipes used in the upper vehicle frame modules. The steel pipe form is used to replace the traditional steel plate tailor-welded structure. The steel pipe skeleton is light in weight. At the same time, the skeleton adopts a criss-cross connection form, which can withstand high strength and load, which not only meets the requirements of light weight but also has good strength.

Preferably, the lower chassis module includes two main longitudinal beams extending parallel to each other, the front and rear sections of the two main longitudinal beams are arched relative to the middle section, and a front cross member is arranged between the front sections of the two main longitudinal beams A middle cross beam is arranged between the middle sections of the two main longitudinal beams, and a rear cross beam is arranged between the rear sections of the two main longitudinal beams. The criss-cross connection structure has better strength, and the middle part of the lower chassis sinks to form a drop. In this way, the entire chassis is divided into three platforms: front, middle and rear. The front platform is the front engine room, the middle platform is the cockpit and passenger compartment, and the rear The platform is the rear compartment.

Preferably, there are at least two front cross beams, middle cross beams and rear cross beams, and they are equidistantly distributed. Since the lower chassis module will form three load-bearing platforms, and each load-bearing platform must be supported by at least two beams, so the number of front beams, middle beams, and rear beams is at least two, and the equidistant distribution can be maintained to make the chassis The module bears the force evenly.

Preferably, the two ends of the middle beam exceed the span of the two main longitudinal beams and are respectively connected to the auxiliary longitudinal beams on both sides. By increasing the length of the center beam, the area of the middle platform, ie the cockpit and passenger compartment, can be enlarged.

Preferably, the upper frame module includes two arched main side beams extending in parallel, at least two upper curved beams are arranged between the two main side beams, and the two main side beams are The front end is fixed with a front curved beam, and the front part of the front curved beam is provided with a supporting vertical beam, and the front end, the rear end and the middle of the two main side beams are all provided with a number of supporting vertical beams, and the bottom of the supporting vertical beam The end is fixedly connected to the main longitudinal beam or the auxiliary longitudinal beam of the lower chassis module.

Preferably, the connections between the steel pipes are all welded. The welded one has better strength, better stability, and is easy to process.

The beneficial effect of the body skeleton structure of the utility model is that: the steel pipe form is used instead of the traditional steel plate tailor-welded structure, the steel pipe skeleton is light in weight, and the skeleton adopts a criss-cross connection form, which can withstand higher strength and load, which not only meets the requirements of light weight The requirements have better strength.

Description of drawings

Fig. 1 is a kind of structural representation of the framework structure of vehicle body of the present utility model;

The numbers in the figure are: 1. Main longitudinal beam 2. Front beam 3. Middle beam 4. Rear beam 5. Auxiliary beam 6. Main side beam 7. Upper curved beam 8. Front curved beam 9. Supporting vertical beam 10 . Reinforced beams.

Detailed ways

The technical solution of the utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Example:

As shown in Figure 1, a car body skeleton structure, its skeleton units are all made of steel pipes, welded into a skeleton structure in a criss-cross manner, the car body skeleton structure includes a lower chassis module and an upper frame module, the lower chassis The connection points of the module and the upper frame module are also fixedly connected by welding, and the lower chassis module is larger in diameter than the steel pipe used in the upper frame module. The lower chassis module includes two main longitudinal beams 1 extending parallel to each other. The front and rear sections of the two main longitudinal beams 1 are arched relative to the middle section to form a drop. Two front beams 2 are welded, four middle beams 3 are welded between the middle sections of the two main longitudinal beams 1, and two rear beams 4 are welded between the rear sections of the two main longitudinal beams 1. The length of the cross beam 3 is greater than the span of the two main longitudinal beams 1, and there is an auxiliary longitudinal beam 5 on the left and right sides of the two main longitudinal beams 1, and the two ends of the middle cross beam 3 are respectively welded to the two auxiliary longitudinal beams. On the beam 5, the front beam 2, the middle beam 3 and the rear beam 4 are equidistantly distributed.

The upper frame module includes two arched main side beams 6 extending in parallel, and at least four upper curved beams 7 are arranged between the two main side beams 6, wherein the two upper curved beams 7 are located at The two ends of the main side beam 6, and the other two upper curved beams 7 are located in the middle of the main side beam 6, and the front ends of the two main side beams 6 are fixed with a front curved beam 8, and the front curved beam 8 is integrally formed U-shaped, its two ends are respectively welded with the front ends of the two main side beams 6, and the front part of the front curved beam 8, the front end, the rear end and the middle part of the two main side beams are all welded with supporting vertical beams 9, the supporting The bottom end of the vertical beam 9 is welded to the main longitudinal beam 1 or the auxiliary longitudinal beam 5 of the lower chassis module. The number of supporting vertical beams 9 can be determined according to the actual vehicle body weight and strength requirements. In this embodiment, the front curved The number of 9 supporting vertical beams at the front of the beam 8 is two, and they are separated from the left and right sides. The number of 9 supporting vertical beams at the front end of each main side beam 6 is three, and its form is a tripod support shape. Reinforcing beams 10 are arranged between the supporting vertical beams 9 on the sides, and the number of supporting vertical beams 9 in the middle of each main side beam 6 is one, and its bottom end is welded on the auxiliary longitudinal beam 5 on the same side. The number of 9 supporting vertical beams at the rear end of the beam 6 is four, and the form is that one of them is in a vertical state, and the other three are in a tripod support shape at its bottom.

The steel pipe form is used to replace the traditional steel plate tailor-welded structure. The steel pipe skeleton is light in weight. At the same time, the skeleton adopts a criss-cross connection form, which can withstand high strength and load, which not only meets the requirements of light weight but also has good strength.

The specific embodiments described above are only preferred illustrations for the concept of the present utility model. Any modification, supplement or equivalent replacement made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the utility model.

Claims (6)

1. vehicle body framework construction; It is characterized in that: its skeleton unit is steel pipe and makes; Said vehicle body framework construction comprises bottom chassis module and upper frame module; The point of connection of said bottom chassis module and upper frame module is for captiveing joint, and said bottom chassis module is bigger than the bore of the used steel pipe of upper frame module.

2. vehicle body framework construction according to claim 1; It is characterized in that: said bottom chassis module comprises two main longitudinal griders (1) that are parallel to each other and extend; Arch upward in said two relative stage casings with back segment of main longitudinal grider (1) leading portion; Be provided with front cross rail (2) between the leading portion of said two main longitudinal griders (1), be provided with center member (3) between the stage casing of two main longitudinal griders (1), be provided with after cross member (4) between the back segment of two main longitudinal griders (1).

3. vehicle body framework construction according to claim 2 is characterized in that: the number of said front cross rail (2), center member (3) and after cross member (4) is at least two, and keeps being equally spaced.

4. according to claim 2 or 3 described vehicle body framework constructions, it is characterized in that: the two ends of said center member (3) exceed the span of two main longitudinal griders (1) and are connected to separately on the auxilliary longeron (5) of both sides.

5. vehicle body framework construction according to claim 4; It is characterized in that: said upper frame module comprises the master beam (6) of two arches; The two extends parallel; Be provided with at least two top camber beams (7) between said two master beams (6), the front end of said two master beams (6) is fixed with anterior camber beam (8), and this front portion camber beam (8) front portion is provided with supports vertical beam (9); Front end, rear end and the middle part of said two master beams (6) is equipped with some support vertical beams (9), and the bottom of said support vertical beam (9) is fixedly attached on the main longitudinal grider (1) or auxilliary longeron (5) of bottom chassis module.

6. vehicle body framework construction according to claim 1 is characterized in that: the connection between the said steel pipe is welding.

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