CN216684593U

CN216684593U - Sub-frame assembly structure

Info

Publication number: CN216684593U
Application number: CN202120911959.6U
Authority: CN
Inventors: 周浩泽; 李银; 赵群; 郝雷伟; 杨展; 程林; 宋东奇
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-06-07
Anticipated expiration: 2031-04-29

Abstract

The utility model aims to provide an auxiliary frame assembly structure which is suitable for different vehicle type requirements under the same platform under the condition that the main body structure is not changed. In the above-mentioned scheme, go up the major structure that body and lower body constitute, the sectional area through changing web beam changes the bending rigidity and the modal property of sub vehicle frame, makes it to be adapted to the requirement of different motorcycle types, when satisfying the universalization demand in the platform, can avoid the performance surplus, reduce cost again.

Description

Sub-frame assembly structure

Technical Field

The utility model relates to the technical field of automobile chassis systems, in particular to an auxiliary frame assembly structure.

Background

The auxiliary frame is applied to an automobile front suspension system and used for bearing parts such as a suspension, and the auxiliary frame provides mounting points for parts such as a steering engine, a stabilizer bar, an engine suspension and a control arm. Under the large background that the energy is increasingly scarce and the environmental pollution is increasingly serious, the light weight of the auxiliary frame is more and more emphasized by all vehicle enterprises.

In order to achieve the requirement of light weight, the Chinese patent named 'an auxiliary frame' (grant publication number: CN206031486U) discloses the following technical scheme: the auxiliary frame adopts an integral stamping structure and is formed by welding an upper sheet body and a lower sheet body, and a cavity structure is arranged between the upper sheet body and the lower sheet body after welding, so that the weight of the auxiliary frame is greatly reduced. However, under the condition that vehicle model platform planning is more and more common, in order to meet the requirement of generalization in the platform, the structure and performance design of the auxiliary frame needs to meet the vehicle model with the highest requirement in the platform, so that part of performance excess design is caused, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an auxiliary frame assembly structure which is suitable for different vehicle type requirements under the same platform under the condition that the main structure is unchanged.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an auxiliary frame assembly structure, includes body and lower body, goes up body, lower body lock and welds as an organic whole and constitute auxiliary frame main part, and auxiliary frame main part middle part position is provided with the deletion portion, is provided with the web beam in the deletion portion, and the length direction of web beam is unanimous with wide direction of car, and the both ends of web beam respectively with the auxiliary frame main part welding of deletion portion both sides.

In the above scheme, the main structure that upper body and lower body constitute changes the bending rigidity and the modal performance of sub vehicle frame through the sectional area that changes web beam, makes it to be adapted to the requirement of different motorcycle types, when satisfying the universalization demand in the platform, can avoid performance surplus, reduce cost again.

Drawings

FIG. 1 is a perspective view of a subframe assembly;

FIG. 2 is a top view of the upper body;

FIG. 3 is a top view of the lower body;

fig. 4 is a top view of a reinforcement beam.

Detailed Description

Referring to fig. 1 and 4, a sub-frame assembly structure includes an upper body 10 and a lower body 20, the upper body 10 and the lower body 20 are fastened and welded together to form a sub-frame main body, a missing portion a is disposed at a middle position of the sub-frame main body, a reinforcing cross member 30 is disposed in the missing portion a, a length direction of the reinforcing cross member 30 is consistent with a vehicle width direction, and two ends of the reinforcing cross member 30 are welded to the sub-frame main bodies at two sides of the missing portion a, respectively. The arrangement of the missing part A is beneficial to reducing the weight of the auxiliary frame main body and meeting the requirement of light weight, the main body structure formed by the upper body 10 and the lower body 20 changes the bending rigidity and the modal performance of the auxiliary frame by changing the sectional area of the reinforcing cross beam 30, so that the auxiliary frame is suitable for the requirements of different vehicle types, and the requirements of generalization in a platform are met, and meanwhile, the performance surplus can be avoided and the cost is reduced. In other words, the upper body 10 and the lower body 20 of different vehicle types are stamped and formed by the same platform, then the reinforcing cross beam 30 with a proper section is selected according to the requirements of different vehicle types on bending rigidity and modal performance, so that the bending rigidity and modal performance of the whole auxiliary frame assembly are improved, the same auxiliary frame main body and the reinforcing cross beams 30 with different sections are combined, and cost and weight optimization is achieved under the condition that the performance requirements of different vehicle types in the same platform are met.

In order to ensure the connection reliability of the reinforcing beam 30, as shown in fig. 3, a mounting cross plate 21 is integrally press-formed in the missing portion a of the lower body 20, and both ends of the reinforcing beam 30 are welded to the subframe main bodies on both sides of the missing portion a, and the middle portion is welded to the mounting cross plate 21. In such a structure, the middle portion of the reinforcing cross member 30 may also be welded and fixed to the subframe main body, thereby improving the bending rigidity of the reinforcing cross member 30.

As a preferred embodiment of the present invention, as shown in fig. 4, the reinforcing beam 30 is formed by integral punching, and includes a bottom plate 31, side plates 32 extending downward from front and rear sides of the bottom plate 31 to form a cover with a downward opening, an external flange 33 disposed at a lower side of the side plates 32, the external flange 33 being attached to and welded to an upper surface of the installation transverse plate 21, welding plates 34 protruding to both sides at two ends of the bottom plate 31 and the side plates 32, and the welding plates 34 being welded to the upper body 10 respectively. After the shell-shaped reinforcing cross beam 30 is welded with the mounting transverse plate 21 and the upper body 10, a cavity structure is formed in the middle, and the weight of the auxiliary frame is reduced.

Further, the lower body 20 is flat, as shown in fig. 2, the upper body 10 includes a top plate 11, a vertical plate 12 extends downward from the periphery of the top plate 11 to form a cover with a downward opening, a welding flange 13 is disposed at the lower edge of the vertical plate 12, the welding flange 13 is attached to and welded with the upper plate surface of the lower body 20, a welding plate 34 on the bottom plate 31 is welded with the top plate 11, and a welding plate 34 on the side plate 32 is welded with the vertical plate 12. After the upper body 10 and the lower body 20 in the shape of a cover shell are welded, a cavity structure is formed in the middle, and the weight of the auxiliary frame main body is greatly reduced; the welding plate 34 is welded with the top plate 11 and the vertical plate 12, so that the welding area is increased, and the welding reliability is improved.

In order to ensure that the welding plate 34 can be reliably welded with the top plate 11 and the vertical plate 12, the plate surface of the welding plate 34 is in a curved surface shape, and the radian of the curved surface is matched with the radians of the top plate 11 and the vertical plate 12 at the welding position.

The central part of the mounting transverse plate 21 is also provided with a plurality of lightening holes 211, so that the whole weight is further lightened.

Furthermore, the left and right sides of the rear parts of the upper body 10 and the lower body 20 are provided with grooves a, and the left and

right bent arms

40 and 50 are installed in the grooves a and connected by welding seams.

Claims

1. The utility model provides a sub vehicle frame assembly structure, includes body (10) and lower body (20), goes up body (10), lower body (20) lock and welds as an organic whole and constitute sub vehicle frame main part, its characterized in that: the auxiliary frame is characterized in that a missing part (A) is arranged in the middle of the auxiliary frame main body, a reinforcing cross beam (30) is arranged in the missing part (A), the length direction of the reinforcing cross beam (30) is consistent with the width direction of the vehicle, and two ends of the reinforcing cross beam (30) are respectively welded with the auxiliary frame main body on two sides of the missing part (A).

2. The subframe assembly structure of claim 1, wherein: and a mounting transverse plate (21) is integrally formed in the missing part (A) of the lower body (20) in a stamping mode, two ends of the reinforcing cross beam (30) are welded with the auxiliary frame main body on two sides of the missing part (A), and the middle part of the reinforcing cross beam is welded with the mounting transverse plate (21).

3. The subframe assembly structure of claim 2, wherein: strengthening beam (30) is stamping forming as an organic whole, including bottom plate (31), both sides limit downwardly extending has curb plate (32) to constitute the decurrent cover shell form of opening around bottom plate (31), and the lower curb plate department of curb plate (32) is provided with external turn-ups (33), and face laminating and welding are gone up with installation diaphragm (21) to external turn-ups (33), and bottom plate (31) and curb plate (32) both ends position department are to protruding the stretching in both sides and are provided with welding plate (34), and welding plate (34) weld with last body (10) respectively.

4. The subframe assembly structure of claim 3 wherein: lower body (20) wholly is flat, goes up body (10) and includes roof (11), and the periphery downwardly extending of roof (11) has riser (12) to constitute the downward cover shell form of opening, and the lower curb plate department of riser (12) is provided with welding turn-ups (13), and welding turn-ups (13) and the last face laminating of lower body (20) and welding are as an organic whole, and welding plate (34) on bottom plate (31) and roof (11) welding, and welding plate (34) on curb plate (32) and riser (12) welding.

5. The subframe assembly structure of claim 4 wherein: the surface of the welding plate (34) is curved and the radian of the curved surface is matched with the radians of the top plate (11) and the vertical plate (12) at the welding position.

6. The subframe assembly structure of claim 2, wherein: the middle part of the mounting transverse plate (21) is also provided with a plurality of lightening holes (211).

7. The subframe assembly structure of claim 1, wherein: the left and right sides of the rear parts of the upper body (10) and the lower body (20) are provided with grooves (a), and the left and right bent arms (40, 50) are arranged in the grooves (a).