Fully-extruded aluminum alloy butterfly-shaped auxiliary frame

Abstract

The utility model provides a full-extruded aluminum alloy butterfly-shaped auxiliary frame which comprises an auxiliary frame body, the auxiliary frame body is of a butterfly-shaped structure, the butterfly-shaped structure comprises a front cross beam, the end face of one side of the front cross beam is connected with a rear longitudinal beam through a middle swing arm installation tower, and front end vehicle body installation supports are arranged at the two ends of the end face of the other side of the front cross beam. The two front-end vehicle body mounting brackets are symmetrically arranged left and right, each front-end vehicle body mounting bracket is of an arc-shaped structure, and the other end of each arc-shaped structure faces the side far away from the front cross beam. According to the utility model, all parts are made of extruded aluminum alloy sections; after assembly machining is completed, post-welding aging is carried out, and the welding seam strength can be improved; according to the auxiliary frame, the end face of one side of a front cross beam is connected with a rear longitudinal beam through a middle swing arm installation tower, front end vehicle body installation supports are arranged at the two ends of the end face of the other side of the front cross beam, the full-extrusion four-wheel-drive aluminum alloy butterfly-shaped auxiliary frame designed in a butterfly-shaped structure is formed, the weight is only 13 kg, the vehicle weight is reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy auxiliary frames of automobile chassis suspension systems, in particular to a fully extruded aluminum alloy butterfly-shaped auxiliary frame. Background Art

[0002] In recent years, the new energy vehicle industry has developed rapidly. Based on consumers' mileage anxiety, they have put forward higher and higher requirements for automobile lightweighting, and the demand for all-aluminum alloy subframes has become increasingly strong. At present, all-aluminum alloy subframes are mainly divided into three types: one-piece casting, full extrusion, and a combination of casting and extrusion.

[0003] Extruded aluminum alloy profiles have advantages such as good mechanical properties, high strength, few defects, low mold costs, and easy maintenance, but they also have the following technical defects: the subframe used for four-wheel drive increases the weight of the vehicle and is more expensive.

[0004] Therefore, how to design a fully extruded aluminum alloy butterfly subframe for four-wheel drive use has become an urgent problem to be solved. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a fully extruded aluminum alloy butterfly-shaped subframe to solve at least one of the above technical problems.

[0006] The technical scheme of the utility model is: a fully extruded aluminum alloy butterfly subframe, including a subframe body, all parts of the subframe body are made of extruded profiles, and the aluminum alloy profiles are machined in a single piece and all are connected by welding; the subframe body is a butterfly structure, and the butterfly structure includes a front crossbeam, one side end face of the front crossbeam is connected to the rear longitudinal beam through a middle swing arm mounting tower, and both ends of the other side end face of the front crossbeam are provided with front end body mounting brackets, the two front end body mounting brackets are arranged symmetrically on the left and right, and the front end body mounting brackets are arc structures , the other end of the arc structure faces the side away from the front cross beam; an open groove is provided in the middle of one end surface of the front cross beam, a front suspension mounting bracket is provided in the open groove, the front suspension mounting bracket is a first U-shaped frame, and the opening of the first U-shaped frame faces the side away from the front cross beam; symmetrically arranged first round tubes are provided on the front cross beam, the two first round tubes are arranged vertically, the two first round tubes penetrate the front cross beam, the two first round tubes are respectively located between the front end body mounting bracket and the middle swing arm mounting tower, and the two first round tubes constitute the steering gear mounting point.

[0007] All parts of the utility model are made of extruded aluminum alloy profiles; after the aluminum alloy profiles are machined individually, they are all connected by welding, and after welding, the assembly surface and the installation hole are machined by assembly machining to ensure the assembly accuracy; after the assembly machining is completed, the welding is carried out after aging to improve the strength of the weld; the sub-frame adopts the end face of one side of the front cross beam to connect the rear longitudinal beam through the middle swing arm installation tower, and the two ends of the end face of the other side of the front cross beam are provided with front end body installation brackets to form a butterfly structure design, a fully extruded four-wheel drive aluminum alloy butterfly sub-frame, which weighs only 13kg, reduces the weight of the vehicle, and reduces the cost; the front cross beam is provided with symmetrically arranged first round tubes to form a steering gear installation point, which ensures the stability and reliability of the connection.

[0008] Preferably, the two rear longitudinal beams are arranged symmetrically, and the rear longitudinal beams adopt a multi-layer reinforcement rib cross-section design. A hook is provided at one end of the two rear longitudinal beams away from the front cross beam, and the hook faces the side away from the front suspension mounting bracket; a rear suspension mounting bracket is provided on the end surface of the two rear longitudinal beams on the side close to each other, and the rear suspension mounting bracket is located at the end close to the hook, and the rear suspension mounting bracket is a second U-shaped frame, and the opening of the second U-shaped frame faces the other rear longitudinal beam; the front suspension mounting bracket and the rear suspension mounting bracket constitute a suspension mounting point; a second round tube is provided on the hook, and the two second round tubes are arranged vertically, and the two second round tubes pass through the rear longitudinal beam.

[0009] The rear longitudinal beam of the utility model adopts a multi-layer reinforcement rib section design, which greatly improves the rigidity of the longitudinal beam; a three-point installation of the suspension mounting point is formed by a front suspension mounting bracket and two rear suspension mounting brackets, and is connected to the vehicle body through a second round tube, thereby ensuring the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the installation structure of the utility model.

[0011] Figure 2 It is a top view of the utility model.

[0012] Figure 3 It is a bottom view of the utility model.

[0013] Figure 4 It is a rear view of the utility model.

[0014] Figure 5 It is a left view of the utility model.

[0015] In the figure: 1. Steering gear mounting point; 2. Suspension mounting point; 3. Swing arm mounting point; 4. Front suspension mounting bracket; 5. Middle swing arm mounting tower; 6. Rear suspension mounting bracket; 7. Front cross beam; 8. Front end body mounting bracket; 9. Middle body mounting bracket; 10. Rear longitudinal beam; 11. Body mounting point; 12. Stabilizer bar mounting bracket; 13. Front swing arm mounting point. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] See also Figure 1-5 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0018] Embodiment 1: A fully extruded aluminum alloy butterfly subframe, referring to Figure 1 , Figure 2 , Figure 4 , Figure 5, including a subframe body, all parts of the subframe body are made of extruded profiles, and the aluminum alloy profiles are machined in a single piece and all are connected by welding; the subframe body is a butterfly structure, and the butterfly structure includes a front cross beam 7, one side end face of the front cross beam 7 is connected to the rear longitudinal beam 10 through a middle swing arm mounting tower 5, and both ends of the other side end face of the front cross beam 7 are provided with front end body mounting brackets 8, and the two front end body mounting brackets 8 are arranged symmetrically on the left and right, and the front end body mounting bracket 8 is an arc structure, and the other end of the arc structure faces away from One side of the front cross beam 7; an open groove is provided in the middle of one end surface of the front cross beam 7, and a front suspension mounting bracket 4 is provided in the open groove, and the front suspension mounting bracket 4 is a first U-shaped frame, and the opening of the first U-shaped frame faces the side away from the front cross beam 7; symmetrically arranged first round tubes are provided on the front cross beam 7, and the two first round tubes are arranged vertically, and the two first round tubes pass through the front cross beam 7, and the two first round tubes are respectively located between the front end body mounting bracket 8 and the middle swing arm mounting tower 5, and the two first round tubes constitute the steering gear mounting point 1. All parts of the utility model are made of extruded aluminum alloy profiles; after the aluminum alloy profiles are machined individually, they are all connected by welding, and after welding, the assembly surface and the installation hole are machined by assembly machining to ensure the assembly accuracy; after the assembly machining is completed, the welding is carried out after aging to improve the strength of the weld; the sub-frame adopts the end face of one side of the front cross beam to connect the rear longitudinal beam through the middle swing arm installation tower, and the two ends of the end face of the other side of the front cross beam are provided with front end body installation brackets to form a butterfly structure design, a fully extruded four-wheel drive aluminum alloy butterfly sub-frame, which weighs only 13kg, reduces the weight of the vehicle, and reduces the cost; the front cross beam is provided with symmetrically arranged first round tubes to form a steering gear installation point, which ensures the stability and reliability of the connection.

[0019] Embodiment 2: Based on Embodiment 1, refer to Figure 3 The two rear longitudinal beams 10 are arranged symmetrically, and the rear longitudinal beams 10 adopt a multi-layer reinforcing rib cross-section design. A hook is provided at one end of the two rear longitudinal beams 10 away from the front cross beam 7, and the hook faces the side away from the front suspension mounting bracket 4; a rear suspension mounting bracket 6 is provided on the end surface of the two rear longitudinal beams 10 close to each other, and the rear suspension mounting bracket 6 is located at the end close to the hook, and the rear suspension mounting bracket 6 is a second U-shaped frame, and the opening of the second U-shaped frame faces the other rear longitudinal beam 10; the front suspension mounting bracket 4 and the rear suspension mounting bracket 6 constitute a suspension mounting point 2; a second round tube is provided on the hook, and the two second round tubes are arranged vertically, and the two second round tubes penetrate the rear longitudinal beam 10. The rear longitudinal beam of the utility model adopts a multi-layer reinforcing rib cross-section design, which greatly improves the longitudinal beam rigidity; the three-point installation of the suspension mounting point is formed by the front suspension mounting bracket and the two rear suspension mounting brackets, and is connected to the vehicle body through the second round tube, ensuring the stability and reliability of the connection.

[0020] Embodiment 3: Based on Embodiment 2, the two middle swing arm mounting towers 5 are arranged symmetrically, and the middle vehicle body mounting brackets 9 are arranged on the end faces of the two middle swing arm mounting towers 5 that are away from each other. The two middle vehicle body mounting brackets 9 are arranged symmetrically, and the end of the middle vehicle body mounting bracket 9 away from the middle swing arm mounting tower 5 is provided with a third round tube, and the two third round tubes are arranged vertically. The utility model adopts the method of setting the third round tube on the middle vehicle body mounting bracket, and connecting it with the vehicle body through the third round tube, thereby ensuring the stability and reliability of the connection.

[0021] Embodiment 4: Based on Embodiment 3, a fourth round tube is provided on the front vehicle body mounting bracket 8, and two fourth round tubes are arranged vertically, and the two fourth round tubes penetrate the front vehicle body mounting bracket 8, and the second round tube, the third round tube, and the fourth round tube constitute the vehicle body mounting point 11. The utility model adopts a fourth round tube provided on the front vehicle body mounting bracket, and forms a six-point mounting connection with the vehicle body through two second round tubes, two third round tubes, and two fourth round tubes, thereby ensuring the stability and reliability of the connection.

[0022] Embodiment 5: Based on Embodiment 4, a stabilizer bar mounting bracket 12 is provided on the bottom surface of one end of the front body mounting bracket 8 connected to the front cross beam 7. The stabilizer bar mounting bracket 12 is a third U-shaped bracket, and the opening of the third U-shaped bracket is arranged downward. The utility model adopts a stabilizer bar mounting bracket provided on the bottom surface of one end of the front body mounting bracket connected to the front cross beam, thereby ensuring the stability and reliability of the connection.

[0023] Embodiment 6: Based on Embodiment 4, the bottom surface of one end of the rear longitudinal beam located in the middle swing arm mounting tower 5 is provided with a fifth round tube arranged at intervals, the fifth round tube is located on one side of the third round tube close to it, and two fifth round tubes constitute the front swing arm mounting point 13. The utility model adopts the method of setting the fifth round tubes arranged at intervals on the bottom surface of the middle swing arm mounting tower, and the two fifth round tubes constitute the front swing arm mounting point, thereby ensuring the stability and reliability of the connection.

[0024] Embodiment 7, on the basis of Embodiment 6, a sinking platform is provided on the hook portion of the rear longitudinal beam 10, the sinking platform is away from the second round tube, a through hole is provided on the sinking platform; the sinking platform and the front swing arm mounting point 13 form the swing arm mounting point 3. The utility model adopts a sinking platform provided on the hook portion of the rear longitudinal beam, the sinking platform is provided with a through hole, and the swing arm mounting point is formed with the front swing arm mounting point. The area where the swing arm mounting point is located is sawed along the inner reinforcing rib surface of the longitudinal beam according to the shape of the swing arm bracket, and the incision is used for welding the front and rear swing arm mounting brackets; the stability and reliability of the connection are ensured.

[0025] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fully extruded aluminum alloy butterfly subframe, comprising a subframe body, characterized in that: All parts of the subframe body are made of extruded profiles, and the aluminum alloy profiles are machined in a single piece and then all connected by welding; the subframe body is a butterfly structure, which includes a front crossbeam (7), one end face of the front crossbeam (7) is connected to the rear longitudinal beam (10) through a middle swing arm mounting tower (5), and both ends of the other end face of the front crossbeam (7) are provided with front body mounting brackets (8), the two front body mounting brackets (8) are arranged symmetrically, and the front body mounting brackets (8) are arc-shaped structures, and the other end of the arc-shaped structure faces away from the front crossbeam (7). one side of the front cross beam (7); an open groove is provided in the middle of one end surface of the front cross beam (7); a front suspension mounting bracket (4) is provided in the open groove; the front suspension mounting bracket (4) is a first U-shaped bracket, and the opening of the first U-shaped bracket faces the side away from the front cross beam (7); the front cross beam (7) is provided with symmetrically arranged first round tubes, the two first round tubes are arranged vertically, the two first round tubes penetrate the front cross beam (7), the two first round tubes are respectively located between the front end body mounting bracket (8) and the middle swing arm mounting tower (5), and the two first round tubes constitute a steering gear mounting point (1).

2. The fully extruded aluminum alloy butterfly subframe according to claim 1, characterized in that: The two rear longitudinal beams (10) are symmetrically arranged, and the rear longitudinal beams (10) adopt a multi-layer reinforcement rib cross-section design. A hook portion is provided at one end of the two rear longitudinal beams (10) away from the front cross beam (7), and the hook portion faces the side away from the front suspension mounting bracket (4); a rear suspension mounting bracket (6) is provided on the end surface of the side close to each other of the two rear longitudinal beams (10), and the rear suspension mounting bracket (6) is located at the end close to the hook portion. The rear suspension mounting bracket (6) is a second U-shaped frame, and the opening of the second U-shaped frame faces the other rear longitudinal beam (10); the front suspension mounting bracket (4) and the rear suspension mounting bracket (6) constitute a suspension mounting point (2); a second round tube is provided on the hook portion, and the two second round tubes are arranged vertically, and the two second round tubes penetrate the rear longitudinal beam (10).

3. The fully extruded aluminum alloy butterfly subframe according to claim 2 is characterized in that: The two middle swing arm mounting towers (5) are arranged symmetrically on the left and right, and a middle vehicle body mounting bracket (9) is provided on the end surfaces of the two middle swing arm mounting towers (5) that are away from each other. The two middle vehicle body mounting brackets (9) are arranged symmetrically on the left and right, and a third round tube is provided on one end of the middle vehicle body mounting bracket (9) that is away from the middle swing arm mounting tower (5), and the two third round tubes are arranged vertically.

4. The fully extruded aluminum alloy butterfly subframe according to claim 3 is characterized by: The front end vehicle body mounting bracket (8) is provided with a fourth circular tube, two fourth circular tubes are arranged vertically, the two fourth circular tubes penetrate the front end vehicle body mounting bracket (8), and the second circular tube, the third circular tube, and the fourth circular tube constitute a vehicle body mounting point (11).

5. The fully extruded aluminum alloy butterfly subframe according to claim 4 is characterized in that: A stabilizer bar mounting bracket (12) is provided on the bottom surface of one end of the front end vehicle body mounting bracket (8) connected to the front cross beam (7); the stabilizer bar mounting bracket (12) is a third U-shaped bracket, and the opening of the third U-shaped bracket is arranged downward.

6. The fully extruded aluminum alloy butterfly subframe according to claim 4 is characterized in that: The bottom surface of one end of the rear longitudinal beam located in the middle swing arm mounting tower (5) is provided with a fifth circular tube arranged at intervals, the fifth circular tube is located on one side of the third circular tube close thereto, and the two fifth circular tubes constitute a front swing arm mounting point (13).

7. The fully extruded aluminum alloy butterfly subframe according to claim 6 is characterized in that: A sinking platform is arranged on the hook portion of the rear longitudinal beam (10), the sinking platform is away from the second circular tube, and a through hole is arranged on the sinking platform; the sinking platform and the front swing arm mounting point (13) form a swing arm mounting point (3).

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