CN220662627U - Integral hollow casting aluminum alloy auxiliary frame - Google Patents

Abstract

The utility model provides an integral hollow casting aluminum alloy auxiliary frame, wherein a frame main body is of an integral hollow casting structure, and the wall thickness of a foundation is 4mm; the frame main body comprises a rectangular frame structure formed by two cross beams and two longitudinal beams in a surrounding mode, rectangular holes are formed in the rectangular frame structure, the two longitudinal beams are symmetrically arranged, two ends of the two cross beams exceed one end of the corresponding longitudinal beam, vehicle body mounting points are arranged at two ends of the two cross beams, and vehicle body mounting points at two ends of any cross beam are symmetrically arranged. The utility model adopts an integral casting auxiliary frame scheme, and the inside is hollow, so that the technical defect that the auxiliary frame is seriously deformed and the dimensional accuracy of a product is influenced due to a large amount of heat generated in the welding process is overcome; four-point assembly is realized between four vehicle body mounting points and the vehicle body, and the assembly surface and the mounting hole are uniformly machined through machining after integral casting, so that the size error is small, the mounting and positioning are accurate, and the influence on the operability of the whole vehicle due to large mounting error is avoided.

Description

Integral hollow casting aluminum alloy auxiliary frame

Technical Field

The utility model relates to the technical field of automobile aluminum alloy structural parts, in particular to an integral hollow casting aluminum alloy auxiliary frame.

Background

In recent years, due to the prevalence of new energy automobiles, the demand for automobile weight reduction is increasing, and aluminum alloys are being widely applied to various system structural members of automobiles, particularly in the field of auxiliary frames, due to the high specific strength of the aluminum alloys. However, because the thermal expansion coefficient of the aluminum alloy material is high (more than 2 times of the traditional steel), the common auxiliary frame needs to adopt a welding assembly process, and the following technical defects exist: a large amount of heat is generated in the welding process, so that the auxiliary frame is seriously deformed to influence the dimensional accuracy of products, and the installation error of the hard point position (especially the installation point of a suspension system) on the auxiliary frame is large, so that the operability of the whole vehicle is influenced.

Therefore, how to design an integral hollow casting aluminum alloy auxiliary frame which avoids the serious deformation of the auxiliary frame caused by a large amount of heat generated in the welding process is an urgent problem to be solved.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides an integral hollow casting aluminum alloy auxiliary frame to solve at least one technical problem.

The technical scheme of the utility model is as follows: the integral hollow casting aluminum alloy auxiliary frame comprises a frame main body, wherein the frame main body is of an integral hollow casting structure, and the thickness of a foundation wall is 4mm; the frame main body comprises a rectangular frame structure formed by two cross beams and two longitudinal beams in a surrounding mode, rectangular holes are formed in the rectangular frame structure, the two longitudinal beams are symmetrically arranged, two ends of the two cross beams exceed one end of the corresponding longitudinal beam, vehicle body mounting points are arranged at two ends of the two cross beams, and vehicle body mounting points at two ends of any cross beam are symmetrically arranged.

According to the utility model, an integral casting auxiliary frame scheme is adopted, and an auxiliary frame main body is integrally cast by a sand mold, so that the inside is hollow, the weight is reduced to the greatest extent, the cost is reduced, and the technical defect that the auxiliary frame is seriously deformed and the dimensional accuracy of a product is influenced due to a large amount of heat generated in the welding process is overcome; four-point assembly is realized between four vehicle body mounting points and the vehicle body, and the assembly surface and the mounting hole are uniformly machined through machining after integral casting, so that the size error is small, the mounting and positioning are accurate, and the influence on the operability of the whole vehicle due to large mounting error is avoided.

Preferably, the two crossbeams correspond first crossbeam, second crossbeam respectively, crossbeam, longeron are hollow tube structure, are provided with the rear suspension mounting point on the terminal surface that the middle part of first crossbeam is close to the rectangular hole, and arbitrary longeron is curved structure, and the one end that arbitrary longeron connected first crossbeam all is higher than the one end that it connects the second crossbeam.

The utility model adopts the longitudinal beam with the curve structure, has the advantages of high strength, good rigidity, light dead weight, high space utilization rate and the like, can fully utilize the space and improves the use efficiency.

Drawings

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

Fig. 2 is a bottom view of the present utility model.

Fig. 3 is a cross-sectional view A-A of fig. 2.

Fig. 4 is a B-B cross-sectional view of fig. 2.

In the figure: 1. a first cross beam; 2. a first stringer; 3. a second cross beam; 4. a front suspension mounting point; 5. a front lower swing arm; 6. a second stringer; 7. a rear lower swing arm; 8. a steering engine mounting point; 9. a stabilizer bar mounting point; 10. and a rear suspension mounting point.

Detailed Description

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

Referring to fig. 1-4, 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.

An integral hollow casting aluminum alloy auxiliary frame, referring to fig. 1, comprises a frame main body, wherein the frame main body is of an integral hollow casting structure, and the base wall thickness is 4mm; the frame main body comprises a rectangular frame structure formed by two cross beams and two longitudinal beams in a surrounding mode, rectangular holes are formed in the rectangular frame structure, the two longitudinal beams are symmetrically arranged, two ends of the two cross beams exceed one end of the corresponding longitudinal beam, vehicle body mounting points are arranged at two ends of the two cross beams, and vehicle body mounting points at two ends of any cross beam are symmetrically arranged. According to the utility model, an integral casting auxiliary frame scheme is adopted, and an auxiliary frame main body is integrally cast by a sand mold, so that the inside is hollow, the weight is reduced to the greatest extent, the cost is reduced, and the technical defect that the auxiliary frame is seriously deformed and the dimensional accuracy of a product is influenced due to a large amount of heat generated in the welding process is overcome; four-point assembly is realized between four vehicle body mounting points and the vehicle body, and the assembly surface and the mounting hole are uniformly machined through machining after integral casting, so that the size error is small, the mounting and positioning are accurate, and the influence on the operability of the whole vehicle due to large mounting error is avoided.

Based on the second embodiment and the first embodiment, referring to fig. 2, 3 and 4, two beams respectively correspond to the first beam 1 and the second beam 3, the beams and the longitudinal beams are hollow pipe structures, rear suspension mounting points 10 are arranged on the end faces, close to the rectangular holes, of the middle part of the first beam 1, any longitudinal beam is of a curve structure, and one end, connected with the first beam 1, of any longitudinal beam is higher than one end connected with the second beam 3. The utility model adopts the longitudinal beam with the curve structure, has the advantages of high strength, good rigidity, light dead weight, high space utilization rate and the like, can fully utilize the space and improves the use efficiency.

In the third embodiment, on the basis of the second embodiment, one end, close to the first cross beam 1, of each of the two longitudinal beams is provided with a steering gear mounting point 8, and the two steering gear mounting points 8 are on the same vertical plane; two longerons correspond first longeron 2, second longeron 6 respectively, and the one end that is close to first longeron 2 on the first crossbeam 1 also is provided with steering gear mounting point 8, and three steering gear mounting point 8 are located same right triangle's summit, and steering gear mounting point 8 includes first casting boss, is provided with first screw hole in the first casting boss. The steering gear is installed at the steering gear installation points at the three vertexes of the same right triangle, the first casting boss is machined to uniformly process the assembly surface and the first threaded hole after casting, the size error is small, and the installation and the positioning are accurate.

On the basis of the fourth embodiment, the end faces, far away from the rectangular holes, of the first longitudinal beam 2 and the second longitudinal beam 6 are provided with rear lower swing arms 7, the two rear lower swing arms 7 are symmetrically arranged left and right, the two rear lower swing arms 7 are close to one side of the first cross beam 1, and any rear lower swing arm 7 comprises two first ear plates arranged at intervals. The utility model adopts two first ear plates which are arranged at intervals to provide a mounting clamping surface, and the rear lower swing arm is mounted in a lifting lug mode.

On the basis of the fifth embodiment, the front suspension mounting points 4 are respectively arranged at one ends of the first longitudinal beam 2 and the second longitudinal beam 6, which are close to the second cross beam 3, the two front suspension mounting points 4 are symmetrically arranged left and right, and the front suspension mounting points 4 comprise second casting bosses. The second casting boss is adopted, and the assembly surface is machined uniformly after casting, so that the dimensional error is small, and the installation and the positioning are accurate.

On the basis of the sixth embodiment, a front lower swing arm 5 is arranged at one side of the connecting end of the second cross beam 3 with the first longitudinal beam 2 and the second longitudinal beam 6, the two front lower swing arms 5 are symmetrically arranged left and right, and any one of the front lower swing arms 5 comprises two second ear plates arranged at intervals. The utility model adopts two second ear plates which are arranged at intervals to provide a mounting clamping surface, and the front lower swing arm is mounted in a lifting lug mode.

The seventh embodiment is based on the third embodiment, stabilizer bar mounting points 9 are arranged on one side of the connecting ends of the first longitudinal beam 2, the second longitudinal beam 6 and the second cross beam 3, the two stabilizer bar mounting points 9 are symmetrically arranged left and right, any stabilizer bar mounting point 9 comprises a third casting boss, the third casting boss is a rectangular boss, and round corners of the rectangular boss are provided with round corners. The stabilizer bar is installed by adopting the third casting boss, the assembly surface and the installation hole are uniformly machined by machining after the third casting boss is cast, the dimensional error is small, and the installation and the positioning are accurate.

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 (7)

1. The utility model provides an integral hollow casting aluminum alloy sub vehicle frame, includes the frame main part, its characterized in that: the frame main body is of an integral hollow casting structure, and the wall thickness of the foundation is 4mm; the frame main body comprises a rectangular frame structure formed by two cross beams and two longitudinal beams in a surrounding mode, rectangular holes are formed in the rectangular frame structure, the two longitudinal beams are symmetrically arranged, two ends of the two cross beams exceed one end of the corresponding longitudinal beam, vehicle body mounting points are arranged at two ends of the two cross beams, and vehicle body mounting points at two ends of any cross beam are symmetrically arranged.

2. A monolithic hollow cast aluminum alloy subframe as recited in claim 1, wherein: two the crossbeam corresponds first crossbeam (1), second crossbeam (3) respectively, and crossbeam, longeron are hollow tube structure, are provided with rear suspension mounting point (10) on the terminal surface that the middle part of first crossbeam (1) is close to the rectangular hole, and arbitrary longeron is curved structure, and the one end of arbitrary longeron connection first crossbeam (1) all is higher than the one end of its connection second crossbeam (3).

3. A unitary hollow cast aluminum alloy subframe as recited in claim 2, wherein: one end of each longitudinal beam, which is close to the first cross beam (1), is provided with a steering machine mounting point (8), and the two steering machine mounting points (8) are arranged on the same vertical plane; two longerons correspond first longeron (2), second longeron (6) respectively, and the one end that is close to first longeron (2) on first crossbeam (1) also is provided with steering gear mounting point (8), and three steering gear mounting point (8) are located same right angled triangle's summit, and steering gear mounting point (8) are including first casting boss, are provided with first screw hole in the first casting boss.

4. A unitary hollow cast aluminum alloy subframe as recited in claim 3, wherein: the novel rear-lower swing arm structure is characterized in that the end faces, far away from the rectangular holes, of the first longitudinal beam (2) and the second longitudinal beam (6) are respectively provided with a rear lower swing arm (7), the two rear lower swing arms (7) are symmetrically arranged left and right, the two rear lower swing arms (7) are respectively close to one side of the first cross beam (1), and any rear lower swing arm (7) comprises two first earplates which are arranged at intervals.

5. A unitary hollow cast aluminum alloy subframe as recited in claim 3, wherein: the one end that first longeron (2), second longeron (6) are close to second crossbeam (3) all is provided with preceding suspension mounting point (4), and the bilateral symmetry of suspension mounting point (4) is arranged before two, and preceding suspension mounting point (4) include the second casting boss.

6. A unitary hollow cast aluminum alloy subframe as recited in claim 3, wherein: the front lower swing arms (5) are arranged on one side of the connecting ends of the second cross beam (3) with the first longitudinal beam (2) and the second longitudinal beam (6), the two front lower swing arms (5) are symmetrically arranged left and right, and any front lower swing arm (5) comprises two second lug plates which are arranged at intervals.

7. A unitary hollow cast aluminum alloy subframe as recited in claim 3, wherein: the stabilizer bar mounting point (9) is arranged on one side of the connecting end of the first longitudinal beam (2), the second longitudinal beam (6) and the second cross beam (3), the stabilizer bar mounting points (9) are symmetrically arranged left and right, any stabilizer bar mounting point (9) comprises a third casting boss, the third casting boss is a rectangular boss, and round corners of the rectangular boss are provided with round corners.