CN207825865U - The front air suspension structure of gas spring is emptied for affixed side - Google Patents

Abstract

A front air suspension structure for fixing lateral air springs in the field of passenger car technology, comprising a subframe connected to the main frame through welding, the subframe adopts a square steel truss structure, and the subframe The bottom of the bottom is provided with two diagonally braced square steels arranged in parallel up and down. At least two pairs of suspension connector supports are fixed at both ends of the diagonal braces. The suspension connector supports and the suspension connectors One end is fixedly connected, and the other end of the suspension connector is fixedly connected with the side air spring. The utility model adopts a square steel truss structure sub-frame instead of a large longitudinal beam type sub-frame, which realizes light weight, and the weight of each vehicle is reduced by 100-120KG, resulting in greater economic benefits; and the use of a square steel truss structure is conducive to suspension To improve the support structure of the frame connector, small suspension connector supports are installed at multiple positions on the square steel truss structure, which can stably support the side air spring and distribute the force on the subframe.

Description

Front air suspension structure for fixed lateral air springs

technical field

The utility model relates to a technique in the field of passenger cars, in particular to a front air suspension structure for fixing side air springs.

Background technique

When a traditional passenger car is equipped with a side airbag air suspension, the auxiliary frame generally adopts a large longitudinal beam frame structure, and the supports of the connecting parts of the suspension are generally fixed on the longitudinal beam frame by bolts, as shown in Figure 6. The structure mainly has the following problems: 1. The support of each connecting piece of the suspension is cast or a large bracket, and the structure is bulky; 2. The large longitudinal beam frame structure that fixes the suspension connecting piece and the main frame are connected to the concentrated force. Cracks easily.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the utility model proposes a front air suspension structure for fixing side air springs. The square steel truss structure is used as the fixed support structure of side air springs, which reduces the overall weight. And the stress is scattered and the structure is stable.

The utility model is achieved through the following technical solutions:

The utility model comprises a sub-frame connected to the main frame by welding, the sub-frame adopts a square steel truss structure, and the bottom of the sub-frame is provided with two diagonally braced square steels arranged in parallel up and down. At least two pairs of suspension connector supports are fixed at both ends of the diagonal brace square steel, the suspension connector supports are fixedly connected to one end of the suspension connector, and the other end of the suspension connector is fixedly connected to the side air spring .

The sub-frame is arranged as a symmetrical structure on both sides of the main frame, including two parallel left front sub-frames, and several connecting pieces are arranged between the two left front sub-frames; the connecting pieces can be slots steel or square steel; preferably, the connecting piece is provided with a reinforcement structure.

The left front sub-frame adopts a double-layer square steel reinforcement structure, including an outer layer square steel and an inner layer square steel connected by short square steels, wherein the outer layer square steel and the inner layer square steel are composed of square steel For several rectangular structures, the structural length of the inner square steel is greater than that of the outer square steel, and the height is the same, and the diagonal bracing square steel is fixed on the protruding end of the inner square steel relative to the outer square steel.

The inner square steel is provided with reinforced oblique square steel at the diagonal positions of the rectangular structure at both ends.

Corresponding to the side-mounted air spring, the shock absorber bracket is fixed on the outer square steel; preferably, the shock absorber bracket adopts an inverted U-shaped structure, and the shock absorber bracket is as low as possible under the premise of considering the strength of the shock absorber bracket. up the weight.

The two diagonal bracing square steels arranged up and down are all welded on the same end of the two left front sub-frames.

Corresponding to the suspension connector, there are two parallel vertical square steels on the top of the sub-frame, one of which is connected to the top of the outer square steel through a reinforced short square steel, and the other vertical square steel is fixed on the vehicle On the body; there is a space between the two longitudinal steel bars for the connection between the side air spring and the corresponding pipeline; preferably, the space is 80-100 mm.

A folded triangle plate is welded between the two diagonally braced square steels arranged up and down, and the folded triangle plate is arranged close to the suspension connector support on the two diagonally braced square steels to prevent stress concentration; preferably, the folded square The number of side triangle plates is two, which are arranged symmetrically about the main vehicle frame.

technical effect

Compared with the prior art, the utility model adopts the square steel truss structure sub-frame instead of the large longitudinal beam type sub-frame, realizes light weight, reduces weight of each vehicle by 100-120KG, and produces greater economic benefits; and adopts square The steel truss structure is conducive to the welding with the main frame and the improvement of the support structure of the suspension connector. Small suspension connector supports are set at multiple positions on the square steel truss structure, which can stably support the side air spring, and at the same time The force distribution on the subframe.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model;

Fig. 2 is a structural schematic diagram of the auxiliary frame in the utility model;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the side view of Fig. 2;

Fig. 5 is A-A direction view among Fig. 3;

Fig. 6 is a schematic structural diagram of the prior art;

In the figure: main frame A, sub-frame B, diagonal brace square steel 1, suspension connector support 2, suspension connector 3, side air spring 4, left front sub-frame 5, connector 6 , shock absorber support 7, vertical square steel 8, folded triangle plate 9, shock absorber 10, inner layer square steel 51, outer layer square steel 52, reinforced orthorhombic square steel 53.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1 and 2, this embodiment includes a subframe B connected to the main frame A by welding, the subframe B adopts a square steel truss structure, and the bottom of the subframe B is provided with Two diagonally braced square steels 1 parallel up and down, at least two pairs of suspension connector supports 2 are fixed at both ends of the diagonally braced square steel 1, and the suspension connector supports 2 are fixedly connected with suspensions by pins. The frame connector 3 and the suspension connector 3 are fixedly connected with a side air spring 4 through pins.

As shown in Figures 2 and 3, the sub-frame B is arranged as a symmetrical structure on both sides of the main frame A, including two parallel left front sub-frames 5, between which two left front sub-frames 5 are arranged. There are several connecting pieces 6; each connecting piece 6 can be channel steel or square steel.

As shown in Figures 2 to 5, the left front sub-frame 5 adopts a double-layer square steel reinforced structure, including an outer layer square steel 52 and an inner layer square steel 51 connected by short square steels, wherein the outer layer Square steel 52 and inner layer square steel 51 all comprise some rectangular structures that square steel forms, and the structural length of inner layer square steel 51 is greater than outer layer square steel 52, and height is the same, and described diagonal bracing square steel 1 is fixed on inner layer square steel. The protruding end relative to the outer square steel 52 on the steel 51.

Preferably, the inner layer square steel 51 includes upper and lower two-layer rectangular structures; the inner layer square steel 51 is provided with reinforced oblique square steel 53 at diagonal positions in the rectangular structure at both ends.

Corresponding to the side air spring 4, the shock absorber bracket 7 is fixed on the outer square steel 52 for fixing the shock absorber 10; preferably, the shock absorber bracket 7 adopts an inverted U-shaped structure, and Under the premise of considering the strength of the shock absorber bracket 7, the weight is reduced as much as possible.

The two diagonal bracing square steels 1 arranged up and down are all welded on the same end of the front sub-frame 5 of the two left pieces.

Corresponding to the suspension connector 3, two parallel vertical square steels 8 are arranged on the top of the auxiliary frame B in this embodiment, one of which is connected to the top of the outer layer square steel 52 through a reinforced short square steel, and the other A vertical square steel 8 is fixed on the vehicle body; the size of the vertical square steel 8 is 80mm*80mm*5mm; there is a space between the two vertical square steels 8, so as to connect the side air spring with the corresponding pipeline; Preferably, the distance is 80-100mm

A folded triangle plate 9 is welded between the two diagonally braced square steels 1 arranged up and down, and the folded triangle plate 9 is arranged close to the suspension connector support 2 on the two diagonally braced square steels to prevent stress concentration; Preferably, there are two flanging triangle plates 9, which are arranged symmetrically with respect to the main frame A.

It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (8)

1. A front air suspension structure for fixing lateral air springs, characterized in that it comprises a subframe connected to the main frame through welding, the subframe adopts a square steel truss structure, and the subframe adopts a square steel truss structure. The bottom of the vehicle frame is provided with two diagonally braced square steels arranged in parallel up and down. At least two pairs of suspension connector supports are fixed at both ends of the diagonal braces. The suspension connector supports and the suspension One end of the connecting piece is fixedly connected, and the other end of the suspension connecting piece is fixedly connected with the side air spring. 2. The front air suspension structure for fixing lateral air springs according to claim 1, characterized in that, the sub-frame is arranged as a symmetrical structure on both sides of the main frame, including two parallel left front As for the sub-frame, several connecting pieces are arranged between the two left front sub-frames; the connecting pieces can be channel steel or square steel. 3. The front air suspension structure for fixing lateral air springs according to claim 2, characterized in that, the left front sub-frame adopts a double-layer square steel reinforcement structure, including connecting short square steel The outer layer square steel and the inner layer square steel, wherein, the outer layer square steel and the inner layer square steel both include several rectangular structures composed of square steel, the structural length of the inner layer square steel is longer than the outer layer square steel, and the height is the same, the The diagonal bracing square steel is fixed on the inner layer square steel relative to the protruding end of the outer layer square steel. 4. The front air suspension structure for fixing lateral air springs according to claim 3, characterized in that, the inner layer square steel is provided with reinforced oblique square steel at diagonal positions in the rectangular structure at both ends. 5. The front air suspension structure for fixing lateral air springs according to claim 3, wherein, corresponding to the lateral air springs, shock absorber brackets are fixed on the outer square steel; preferably Ground, the shock absorber bracket adopts an inverted U-shaped structure. 6. The front air suspension structure for fixing lateral air springs according to claim 3, characterized in that, corresponding to the suspension connectors, two parallel longitudinal square steels are arranged on the top of the sub-frame, wherein One longitudinal square steel is connected with the top of the outer layer square steel through a reinforced short square steel, and the other longitudinal square steel is fixed on the vehicle body; road connection; preferably, the distance is 80-100mm. 7. The front air suspension structure for fixing side-mounted air springs according to claim 1, characterized in that, the two diagonal bracing square steels arranged up and down are all welded to the same joint of the two left front sub-frames. end. 8. The front air suspension structure for fixing side-mounted air springs according to claim 7, wherein a folded triangle plate is welded between the two diagonal bracing square steels arranged up and down, and the folded The side triangles are arranged close to the suspension connector supports on the two diagonal braces; preferably, the number of the folded triangles is two, and they are arranged symmetrically with respect to the main frame.