CN218949293U

CN218949293U - High-strength aluminum alloy auxiliary frame

Info

Publication number: CN218949293U
Application number: CN202223086802.8U
Authority: CN
Inventors: 罗世兵; 姚李军; 张琳; 王潘业; 糜罕峰; 李文通; 贺文豪; 刘学君
Original assignee: Changchun Yousheng Automobile Technology Co ltd
Current assignee: Changchun Yousheng Automobile Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-02
Anticipated expiration: 2032-11-16

Abstract

The utility model provides a high-strength aluminum alloy auxiliary frame, wherein one end of a frame body comprises symmetrically arranged castings, a front cross beam is arranged between the two castings, the other end of the frame body comprises symmetrically arranged vehicle body brackets, any one casting is connected with the vehicle body bracket close to one side of the casting through longitudinal beams, any one longitudinal beam is formed by adopting two-dimensional bending of a special-shaped section, the longitudinal section of any one longitudinal beam is S-shaped, and a rear cross beam is arranged between the two vehicle body brackets; any one of the automobile body supports is of a grid honeycomb structure, and the connection part of the any one of the automobile body supports and the longitudinal beam and the rear cross beam is provided with an inclined support. The longitudinal beam adopts a two-dimensional bending type with a special-shaped cross section, the bending shape can induce bending and energy absorption in the collision process, the rear vehicle body point is of a grid honeycomb structure, the impact force of the rear end can be transmitted in a dispersed manner from different directions, and the matching positions of the rear vehicle body point and the longitudinal beam and the rear cross beam are provided with oblique supports, so that stress concentration caused by right-angle connection is avoided.

Description

High-strength aluminum alloy auxiliary frame

Technical Field

The utility model relates to the technical field of automobile aluminum alloy structural parts, in particular to a high-strength aluminum alloy auxiliary frame.

Background

In recent years, the demand for automobile weight reduction is increasing, and aluminum alloy is being applied to various system structural components of automobiles in a large quantity due to the high specific strength, and particularly in the field of chassis auxiliary frames, the aluminum alloy is being applied more and more. In the collision of the whole vehicle system, due to the action of inertia force, the front auxiliary frame generally receives a large impact force, particularly the connection point between the auxiliary frame and the rear end of the vehicle body, the front auxiliary frame receives the large impact force, and the following technical defects exist: yielding, breakage, etc. are liable to occur.

Therefore, how to design a high-strength aluminum alloy auxiliary frame for dispersing and transmitting the impact force at the rear end is an urgent problem to be solved.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a high-strength aluminum alloy auxiliary frame to solve at least one technical problem.

The technical scheme of the utility model is as follows: the high-strength aluminum alloy auxiliary frame comprises a frame body, wherein the frame body is of a rectangular frame structure, one end of the rectangular frame structure comprises symmetrically arranged castings, a front cross beam is arranged between the two castings, the other end of the rectangular frame structure comprises symmetrically arranged vehicle body supports, any one casting is connected with the vehicle body support close to one side of the casting through longitudinal beams, any one longitudinal beam is formed by adopting two-dimensional bending of a special-shaped section, the longitudinal section of any one longitudinal beam is of an S shape, and a rear cross beam is arranged between the two vehicle body supports; any one of the automobile body supports is of a grid honeycomb structure, and the connection part of the any one of the automobile body supports and the longitudinal beam and the rear cross beam is provided with an inclined support.

According to the utility model, the front vehicle body mounting point, the swing arm front mounting point and the front suspension mounting point are integrated on the casting, collision energy absorption is not considered in the area, the advantages of the casting can be exerted, and the two castings are connected through the extruded front cross beam, so that the lateral transmission force is ensured, and the rigidity is improved; the longitudinal beam adopts a two-dimensional bending type with a special-shaped cross section, in the collision process, bending can be induced by the bending shape, the rear vehicle body point is of a grid honeycomb structure, the impact force at the rear end can be transmitted in a dispersed manner from different directions, and meanwhile, the matching positions of the rear vehicle body point and the longitudinal beam and the rear cross beam are all provided with oblique supports, so that stress concentration caused by right-angle connection is avoided; the extrusion die not only can utilize a relatively simple extrusion application structure, but also can be combined with a casting piece, thereby reducing the cost, improving the performance and controlling the quality.

Preferably, the rear cross beam is of a V-shaped structure, wherein the closed end of the V-shaped structure faces the front cross beam, and the closed end of the V-shaped structure is provided with arc transition.

The utility model adopts the curved rear cross beam, penetrates through the rear vehicle body bracket and is directly welded with the vehicle body point area, thereby strengthening the structural strength of the rear vehicle body bracket, transmitting the collision force in time, avoiding the bending, the breakage and the like of the vehicle body bracket.

Drawings

Fig. 1 is a top view of the mounting structure of the present utility model.

Fig. 2 is a left side view of the mounting structure of the present utility model.

Fig. 3 is a top view of the swing arm bracket of the present utility model.

Fig. 4 is a left side view of fig. 3.

Fig. 5 is a left side view of the rear suspension bracket of the present utility model.

In the figure: 1. casting; 2. a longitudinal beam; 3. a swing arm bracket; 4. a vehicle body bracket; 5. a rear cross member; 6. a rear suspension bracket; 7. a front cross member; 301. an arc-shaped plate; j-leg.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1-5, the structures, proportions, sizes, etc. shown in the drawings attached hereto are shown only in order to provide a person skilled in the art with the benefit of the present disclosure, and are not intended to limit the scope of the utility model in any way, and any structural modifications, proportional changes, or adjustments of size, which do not have any technical significance, would still fall within the scope of the present disclosure without affecting the efficacy or achievement of the present utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

The first embodiment, a high-strength aluminum alloy subframe, refer to fig. 1, 2, including the frame body, the frame body is the rectangle frame construction, one end of rectangle frame construction includes symmetrical arrangement 'S foundry goods 1, be provided with front cross beam 7 between two foundry goods 1, the other end of rectangle frame construction includes symmetrical arrangement' S automobile body support 4, connect through longeron 2 between arbitrary foundry goods 1 and the automobile body support 4 near its one side, arbitrary longeron 2 all adopts abnormal shape cross-section two-dimensional bending shaping, the longitudinal section of arbitrary longeron 2 is the S type, the one end that longeron 2 is close to foundry goods 1 is higher than the one end that longeron 2 is close to automobile body support 4; a rear cross beam 5 is arranged between the two vehicle body brackets 4; any vehicle body bracket 4 is of a grid honeycomb structure, and the joint of any vehicle body bracket 4, the longitudinal beam 2 and the rear cross beam 5 is provided with an inclined support; the foundry goods 1 is T type structure, is provided with preceding automobile body mounting point, swing arm front mounting point and front suspension mounting point on the foundry goods 1, and automobile body mounting point and front suspension mounting point before wherein are the sleeve pipe structure that is located foundry goods 1 top surface, and the swing arm front mounting point is parallel arrangement's otic placode, and contained angle acute angle between the horizontal pole of two otic placodes and T type structure is located on two lateral walls of keeping away from front cross beam 7 one side on the T type structure respectively. According to the utility model, the front vehicle body mounting point, the swing arm front mounting point and the front suspension mounting point are integrated on the casting, collision energy absorption is not considered in the area, the advantages of the casting can be exerted, and the two castings are connected through the extruded front cross beam, so that the lateral transmission force is ensured, and the rigidity is improved; the longitudinal beam adopts a two-dimensional bending type with a special-shaped cross section, in the collision process, bending can be induced by the bending shape, the rear vehicle body point is of a grid honeycomb structure, the impact force at the rear end can be transmitted in a dispersed manner from different directions, and meanwhile, the matching positions of the rear vehicle body point and the longitudinal beam and the rear cross beam are all provided with oblique supports, so that stress concentration caused by right-angle connection is avoided; the extrusion die not only can utilize a relatively simple extrusion application structure, but also can be combined with a casting piece, thereby reducing the cost, improving the performance and controlling the quality.

In the second embodiment, on the basis of the first embodiment, the rear beam 5 is of a V-shaped structure, wherein a closed end of the V-shaped structure faces a closed end of the front beam 7,V and is provided with an arc transition. The utility model adopts the curved rear cross beam, penetrates through the rear vehicle body bracket and is directly welded with the vehicle body point area, thereby strengthening the structural strength of the rear vehicle body bracket, transmitting the collision force in time, avoiding the bending, the breakage and the like of the vehicle body bracket.

In the third embodiment, on the basis of the second embodiment, the opening structures are respectively arranged at the corresponding positions of any one of the vehicle body brackets 4, the longitudinal beams 2 and the rear cross beams 5, and the longitudinal beams 2 and the rear cross beams 5 are respectively located in the corresponding opening structures. The longitudinal beam and the rear cross beam are respectively positioned in the corresponding opening structure of the vehicle body bracket, so that the length of a welding seam between the longitudinal beam and the vehicle body bracket is prolonged, and the connection strength is improved.

On the basis of the fourth embodiment, referring to fig. 3 and fig. 4, a swing arm bracket 3 is disposed in the middle of the top surface of any one of the stringers 2, and the swing arm bracket 3 faces to one side far away from the center line of the frame body. The swing arm support 3 comprises arc plates 301 which are arranged in parallel, J-shaped supporting legs 302 which are arranged at intervals are further arranged between the two arc plates 301, the hook parts of the two J-shaped supporting legs 302 are mutually far away, the arc plates 301 are trapezoid plates which are not isosceles, the two J-shaped supporting legs 302 are respectively located at the two ends of the upper bottom of each trapezoid plate, and the lower bottom side faces of the two trapezoid plates are respectively connected with the top faces and the bottom faces of the longitudinal beams 2. According to the swing arm support, through an extrusion structure test, the swing arm support is formed by the arc plates which are arranged in parallel and the J-shaped supporting legs which are arranged at intervals, so that the structural strength is enhanced; the lower bottom side surfaces (similar to two wings) of the two trapezoid plates are respectively connected with the longitudinal beam, so that the length of a welding seam between the trapezoid plates and the longitudinal beam is prolonged, and the connection strength is improved.

On the basis of the fifth embodiment, referring to fig. 5, a rear suspension bracket 6 is disposed in the middle of the top surface of the rear beam 5, the rear suspension bracket 6 includes C-shaped plates arranged in parallel, parallel transverse plates are disposed between the two C-shaped plates, the opening of any C-shaped plate is a U-shaped opening, and the side surfaces of the closed ends of the two C-shaped plates are respectively connected with the top surface and the bottom surface of the rear beam 5. The utility model adopts the C-shaped plates which are arranged in parallel and the transverse plates which are arranged in parallel to form the rear suspension bracket, thereby enhancing the structural strength; the rear suspension bracket is similar to the swing arm rear bracket in structure, the rear suspension bracket is connected with the rear cross beam through the wing-carrying structure, the welding seam length between the rear suspension bracket and the rear cross beam is prolonged, and the connection strength is ensured.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. The utility model provides a high strength aluminum alloy sub vehicle frame, includes the frame body, its characterized in that: the frame body is of a rectangular frame structure, one end of the rectangular frame structure comprises castings (1) which are symmetrically arranged, a front cross beam (7) is arranged between the two castings (1), the other end of the rectangular frame structure comprises vehicle body supports (4) which are symmetrically arranged, any one casting (1) is connected with the vehicle body support (4) close to one side of the casting through longitudinal beams (2), any one longitudinal beam (2) is formed by two-dimensional bending of a special-shaped cross section, the longitudinal section of any one longitudinal beam (2) is of an S shape, and a rear cross beam (5) is arranged between the two vehicle body supports (4); any car body support (4) is of a grid honeycomb structure, and the joints of any car body support (4) with the longitudinal beam (2) and the rear cross beam (5) are provided with oblique supports.

2. A high strength aluminum alloy subframe as claimed in claim 1, wherein: the rear cross beam (5) is of a V-shaped structure, wherein the closed end of the V-shaped structure faces the front cross beam (7), and the closed end of the V-shaped structure is provided with arc transition.

3. A high strength aluminum alloy subframe as claimed in claim 2, wherein: any one of the automobile body supports (4) is provided with an opening structure at the corresponding positions of the longitudinal beam (2) and the rear cross beam (5), and the longitudinal beam (2) and the rear cross beam (5) are respectively positioned in the corresponding opening structures.

4. A high strength aluminum alloy subframe as claimed in claim 2, wherein: any one of the longitudinal beams (2) is provided with a swing arm support (3) in the middle of the top surface, and the swing arm support (3) faces to one side far away from the center line of the frame body.

5. The high strength aluminum alloy subframe of claim 4 wherein: swing arm support (3) are including parallel arrangement's arc (301), still are provided with J type stabilizer blade (302) that the interval was arranged between two arcs (301), and the hook portion of two J type stabilizer blades (302) is kept away from each other, and arc (301) are the trapezoidal board of isosceles, and two J type stabilizer blades (302) are located the upper and lower both ends of trapezoidal board respectively, and the bottom side of two trapezoidal boards is connected with the top surface and the bottom surface of longeron (2) respectively.