A cast aluminum tower for welded all-aluminum subframe

Abstract

The utility model provides a cast aluminum tower for a welded all-aluminum subframe, including a tower body, the tower body is a trapezoidal structure, a third bracket is arranged on the small end of the trapezoidal structure, the third bracket is a square tubular structure, one end of the rear end longitudinal beam is arranged in the square tubular structure; a second bracket is arranged on one side of the small end of the trapezoidal structure, a first bracket is arranged on one side of the large end of the trapezoidal structure, and a vehicle body mounting point is arranged on the other side of the large end of the trapezoidal structure; the second bracket is on the same side as the first bracket; the first bracket and the second bracket are both provided with a "C"-shaped interface. The third bracket of the utility model adopts a square tubular structure, and the rear end longitudinal beam is inserted into the pipe mouth of the square tubular structure and welded with the square tubular structure along the "mouth"-shaped interface; the front cross beam, the middle cross beam and the cast aluminum tower are all welded along the "C"-shaped interface, and the front cross beam, the middle cross beam and the rear end longitudinal beam are all made of extruded aluminum alloy profiles, which can improve the performance and yield rate of the welded all-aluminum subframe and improve the cost performance.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile aluminum alloy structural parts, in particular to a cast aluminum tower frame used for a tailor-welded all-aluminum auxiliary frame. Background Art

[0002] In recent years, due to the vigorous development of new energy vehicles, the demand for lightweight vehicles has become increasingly strong. Aluminum alloys are widely used in automotive parts due to their high specific strength, especially in chassis systems. Aluminum alloy subframes have become standard for high-end new energy vehicles. The same design of subframes made of all-aluminum is at least 35% lighter than steel, which plays a vital role in lightweighting vehicles and improving cruising range. The car bears very complex loads and fatigue failure problems under braking, vertical impact, steering, reversing, acceleration and other working conditions.

[0003] Extruded aluminum alloy profiles can effectively improve the mechanical properties of the subframe, such as dynamic and static stiffness, strength, etc., but have the following technical defects: Extruded aluminum alloy profiles cannot realize complex space design.

[0004] Therefore, how to design a cast aluminum tower frame for a welded all-aluminum subframe that realizes a complex spatial design 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 cast aluminum tower frame for a welded all-aluminum subframe to solve at least one of the above technical problems.

[0006] The technical solution of the utility model is: a cast aluminum tower for a welded all-aluminum subframe, comprising a tower body, the tower body is a trapezoidal structure, a third bracket is arranged on the small end of the trapezoidal structure, the third bracket is a square tube structure, and one end of the rear end longitudinal beam is arranged in the square tube structure; a second bracket is arranged on one side of the small end of the trapezoidal structure, a first bracket is arranged on one side of the large end of the trapezoidal structure, and a vehicle body mounting point is arranged on the other side of the large end of the trapezoidal structure; the second bracket is on the same side as the first bracket; and the first bracket and the second bracket are both provided with a "C"-shaped interface.

[0007] The third bracket of the utility model adopts a square tube structure, and the rear end longitudinal beam is inserted into the pipe mouth of the square tube structure and then welded to the square tube structure along a "mouth" shaped interface; the first bracket and the second bracket are both provided with a "C" shaped interface, and the front cross beam, the middle cross beam and the cast aluminum tower are all welded along the "C" shaped interface, and the front cross beam, the middle cross beam, the rear cross beam and the rear end longitudinal beam are all made of extruded aluminum alloy profiles to make up for the deficiency that the extruded aluminum alloy profile cannot be made into complex curved surfaces, and realizes the combination of the two processes of extruded aluminum alloy profiles and cast aluminum alloy, which can enhance the performance and yield rate of the welded all-aluminum subframe and improve the cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a right-side three-dimensional diagram of the present invention.

[0009] Figure 2 It is a left-side three-dimensional diagram of the present invention.

[0010] Figure 3 It is a top view of the installation structure of the utility model.

[0011] Figure 4 for Figure 3 Bottom view of .

[0012] In the figure: 1. First bracket; 2. Second bracket; 3. Stabilizer bar mounting boss; 4. Steering gear mounting boss; 5. Third bracket; 6. Adjustment bolt mounting location; 7. Front cross beam; 8. Middle cross beam; 9. Rear end longitudinal beam; 10. Front swing arm mounting bracket. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] See also Figure 1-4 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.

[0015] Embodiment 1: A cast aluminum tower frame for a tailor-welded all-aluminum subframe, referring to Figure 1 , Figure 2 , Figure 3, including a tower body, the tower body is a trapezoidal structure, a third bracket 5 is arranged on the small end of the trapezoidal structure, the third bracket 5 is a square tube structure, and one end of the rear end longitudinal beam 9 is arranged in the square tube structure; a second bracket 2 is arranged on one side of the small end of the trapezoidal structure, a first bracket 1 is arranged on one side of the large end of the trapezoidal structure, and a vehicle body mounting point is arranged on the other side of the large end of the trapezoidal structure; the second bracket 2 is on the same side as the first bracket 1; the first bracket 1 and the second bracket 2 are both provided with a "C"-shaped interface. The third bracket of the utility model adopts a square tube structure, and the rear end longitudinal beam is inserted into the pipe mouth of the square tube structure and then welded to the square tube structure along a "mouth" shaped interface; the first bracket and the second bracket are both provided with a "C" shaped interface, and the front cross beam, the middle cross beam and the cast aluminum tower are all welded along the "C" shaped interface, and the front cross beam, the middle cross beam and the rear end longitudinal beam are all made of extruded aluminum alloy profiles to make up for the deficiency that the extruded aluminum alloy profile cannot be made into complex curved surfaces, and realizes the combination of the two processes of extruded aluminum alloy profiles and cast aluminum alloy, which can enhance the performance and yield rate of the welded all-aluminum subframe and improve the cost performance.

[0016] Embodiment 2: Based on Embodiment 1, the first bracket 1 is a first C-shaped bracket, the opening of the first C-shaped bracket faces the side away from the vehicle body mounting point, and one end of the front cross beam 7 is arranged in the first C-shaped bracket. The first bracket of the utility model adopts a first C-shaped bracket with an opening facing the side away from the vehicle body mounting point, one end of the front cross beam is arranged in the first C-shaped bracket, and is welded along the "C"-shaped interface, realizing the combination of the two processes of extruded aluminum alloy profile and cast aluminum alloy, and increasing the rigidity and strength of the product.

[0017] Embodiment 3: Based on Embodiment 1, the second bracket 2 is a second C-shaped bracket, the opening of the second C-shaped bracket faces the bottom surface, and one end of the middle cross beam 8 is arranged in the second C-shaped bracket. The second bracket of the utility model adopts a second C-shaped bracket with an opening facing the bottom surface, one end of the middle cross beam is arranged in the second C-shaped bracket, and is welded along the "C"-shaped interface, realizing the combination of the two processes of extruded aluminum alloy profiles and cast aluminum alloy, and increasing the rigidity and strength of the product.

[0018] Embodiment 4: Based on Embodiment 1, Figure 2 The other side of the small end of the trapezoidal structure is provided with an adjusting bolt installation place 6, and the adjusting bolt installation place 6 is a recessed structure. The utility model adopts a recessed structure at the installation place of the swing arm of the trapezoidal structure to provide a wrench space for installing the adjusting bolt.

[0019] Embodiment 5: On the basis of Embodiment 1, a stabilizer bar mounting boss 3 and a steering gear mounting boss 4 are sequentially arranged on the large-end top surface of the trapezoidal structure towards the small-end side. The stabilizer bar mounting boss 3 is a cast waist-shaped long boss, and first screw holes are respectively arranged at both ends of the top surface of the waist-shaped long boss; the steering gear mounting boss 4 is a cast circular boss, and a second screw hole is arranged at the center of the cast circular boss. The stabilizer bar mounting boss of the present utility model adopts a cast waist-shaped long boss, and the first screw hole is machined to provide a mounting point and surface for the stabilizer bar; the steering gear mounting boss adopts a cast circular boss, and the second screw hole is machined to provide a mounting point and surface for the steering gear; after the cast aluminum tower is welded to the rear longitudinal beam, the assembly precision is ensured through the assembly machining surface and mounting hole positions.

[0020] Embodiment 6: On the basis of Embodiment 1, referring to Figure 4 , front swing arm mounting brackets 10 are arranged on the bottom surface of the tower body 1. The front swing arm mounting brackets 10 are arranged obliquely. One end of the front swing arm mounting bracket 10 is located on the waist of the trapezoidal structure, and the other end of the front swing arm mounting bracket 10 faces the first bracket 1. The front swing arm mounting bracket of the present utility model provides a mounting clamping surface through a machined hanger type.

[0021] Embodiment 7: On the basis of Embodiment 1, referring to Figure 3 、 Figure 4 , a welded all-aluminum subframe includes a subframe body. The subframe body is a "day"-shaped frame subframe. The "day"-shaped frame subframe includes two symmetrically arranged longitudinal beams. A front cross beam 7, a middle cross beam 8, and a rear cross beam are sequentially arranged between the two longitudinal beams from front to back. Any one of the longitudinal beams is formed by welding a tower body and a rear longitudinal beam 9.

[0022] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A cast aluminum tower for a welded all-aluminum subframe, comprising a tower body, characterized in that: The tower body is a trapezoidal structure, a third bracket (5) is arranged on the small end of the trapezoidal structure, the third bracket (5) is a square tube structure, and one end of the rear end longitudinal beam (9) is arranged in the square tube structure; a second bracket (2) is arranged on one side of the small end of the trapezoidal structure, a first bracket (1) is arranged on one side of the large end of the trapezoidal structure, and a vehicle body mounting point is arranged on the other side of the large end of the trapezoidal structure; the second bracket (2) is on the same side as the first bracket (1); and both the first bracket (1) and the second bracket (2) are provided with a "C"-shaped interface.

2. The cast aluminum tower for a tailor-welded all-aluminum subframe according to claim 1, characterized in that: The first bracket (1) is a first C-shaped bracket, the opening of the first C-shaped bracket faces a side away from the vehicle body mounting point, and one end of the front cross beam (7) is arranged in the first C-shaped bracket.

3. The cast aluminum tower for a tailor-welded all-aluminum subframe according to claim 1, characterized in that: The second bracket (2) is a second C-shaped bracket, the opening of the second C-shaped bracket faces the bottom surface, and one end of the middle cross beam (8) is arranged in the second C-shaped bracket.

4. The cast aluminum tower for a tailor-welded all-aluminum subframe according to claim 1, characterized in that: An adjusting bolt mounting location (6) is provided on the other side of the small end of the trapezoidal structure, and the adjusting bolt mounting location (6) is a recessed structure.

5. The cast aluminum tower for a tailor-welded all-aluminum subframe according to claim 1, characterized in that: The top surface of the large end of the trapezoidal structure is provided with a stabilizer bar mounting boss (3) and a steering gear mounting boss (4) in sequence on the side facing the small end. The stabilizer bar mounting boss (3) is a cast waist-shaped long boss, and first screw holes are respectively provided at both ends of the top surface of the waist-shaped long boss; the steering gear mounting boss (4) is a cast circular boss, and a second screw hole is provided at the center of the cast circular boss.

6. The cast aluminum tower for a tailor-welded all-aluminum subframe according to claim 1, characterized in that: The bottom surface of the tower body is provided with a front swing arm mounting bracket (10), the front swing arm mounting bracket (10) is arranged obliquely, one end of the front swing arm mounting bracket (10) is located on the waist of the trapezoidal structure, and the other end of the front swing arm mounting bracket (10) faces the first bracket (1).

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