Air suspension system and vehicle

Abstract

The invention relates to the technical field of automobiles, in particular to an air suspension system and a vehicle. Wherein the rear axle is connected to the vehicle frame, the first motor is installed on the vehicle frame, the two first thrust rods are arranged on the two sides of the first motor respectively, the two ends of the first thrust rods and the two ends of the second thrust rods are connected to the rear axle and the vehicle frame, and the second thrust rods are arranged below the first motor. Part of the air bags are arranged between the bottom wall of the left side of the frame and the top wall of the rear axle, and the other part of the air bags are arranged between the bottom wall of the right side of the frame and the top wall of the rear axle. The air suspension system is provided with the two first thrust rods, the first motor is located between the two first thrust rods, and the second thrust rod is arranged below the first motor, so that the first motor, the first thrust rods and the second thrust rod do not interfere with one another, the height of a floor is not changed, the mass of the whole vehicle can be reduced, power consumption of the whole vehicle is reduced, and the service life of the whole vehicle is prolonged. The driving range of the electric commercial vehicle is increased, and the safety of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to an air suspension system and a vehicle. Background Art

[0002] At present, most pure electric commercial vehicles at home and abroad are motor + traditional axles. Although they are electric commercial vehicles, the power transmission system only replaces the engine with an electric motor on the basis of a transmission vehicle, and still uses a traditional axle. The connection between the air suspension and the axle and the frame is still a traditional structure. The transmission system is heavy in mass, redundant in structure, and low in cost and efficiency.

[0003] The existing electric commercial vehicle uses an electric drive rear axle. Since there are two drive motors in the middle of the mid-mounted dual-electric drive axle, when installing the air suspension, the floor height of the electric commercial vehicle is relatively low, and the motor will interfere with the installation of the thrust rod. It is necessary to raise the floor height, thereby increasing the height of the thrust rod and further increasing the height of the vehicle step inside the vehicle, making the electric commercial vehicle too high, reducing the safety of the vehicle, increasing the mass of the whole vehicle, increasing the power consumption of the whole vehicle, and reducing the cruising range of the electric commercial vehicle.

[0004] Therefore, there is an urgent need for an air suspension system and a vehicle to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an air suspension system and a vehicle, which can reduce the mass of the whole vehicle, reduce the power consumption of the whole vehicle, increase the cruising range of the electric commercial vehicle, and improve the safety of the vehicle.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An air suspension system includes: a rear axle, a frame, two first thrust rods, a second thrust rod, a first electric motor and several air bags. The rear axle is connected to the frame, the first electric motor is installed on the frame, the two first thrust rods are respectively arranged on both sides of the first electric motor, and both ends of the first thrust rod are respectively connected to the rear axle and the frame. The second thrust rod is arranged below the first electric motor, and both ends of the second thrust rod are respectively connected to the rear axle and the frame bracket. Some of the air bags are arranged between the bottom wall on the left side of the frame and the top wall of the rear axle, and the other part of the air bags are arranged between the bottom wall on the right side of the frame and the top wall of the rear axle.

[0008] As a preferred technical solution of the above air suspension system, the air suspension system further includes two brackets, the two brackets are respectively installed at both ends of the rear axle, some of the air bags are arranged at intervals between one of the brackets and the frame, and the other part of the air bags are arranged at intervals between the other bracket and the frame.

[0009] As a preferred technical solution of the above air suspension system, the bracket is C-shaped.

[0010] As a preferred technical solution of the above air suspension system, the air suspension system is provided with four air bags, two of which are respectively arranged at both ends of one of the brackets, and the other two air bags are respectively arranged at both ends of the other bracket.

[0011] As a preferred technical solution of the above air suspension system, the second thrust rod is V-shaped, the front ends of the second thrust rod are respectively connected to the left and right sides of the vehicle frame, and the rear end of the second thrust rod is connected to the rear axle.

[0012] As a preferred technical solution of the above air suspension system, the air suspension system further includes a first support, and both ends of the first support are respectively connected to the front housing of the rear axle and the rear end of the second thrust rod.

[0013] As a preferred technical solution of the above air suspension system, the air suspension system further includes two second supports, and the two second supports are arranged in one-to-one correspondence with the two first thrust rods. Both ends of the second support are respectively connected to the first thrust rod and the rear axle.

[0014] As a preferred technical solution of the above air suspension system, the distances between the two first thrust rods and the two sides of the corresponding first motor are both 65 mm.

[0015] As a preferred technical solution of the above air suspension system, the air suspension system further includes a second motor, the second motor is installed on the vehicle frame, and the second motor is located behind the first motor.

[0016] A vehicle includes a power system. The vehicle further includes the air suspension system in any of the above embodiments. The power system is installed on the vehicle frame, and the power system is used to drive the vehicle to travel.

[0017] Advantages of the present invention:

[0018] The present invention provides an air suspension system. The air suspension system includes: a rear axle, a vehicle frame, two first thrust rods, a second thrust rod, a first motor, and a plurality of air bags. The rear axle is connected to the vehicle frame. The first motor is installed on the vehicle frame. The two first thrust rods are respectively arranged on both sides of the first motor, and both ends of the first thrust rod are respectively connected to the rear axle and the vehicle frame. The second thrust rod is arranged below the first motor, and both ends of the second thrust rod are respectively connected to the rear axle and the vehicle frame bracket. Some air bags are arranged between the bottom wall on the left side of the vehicle frame and the top wall of the rear axle, and another part of the air bags are arranged between the bottom wall on the right side of the vehicle frame and the top wall of the rear axle. Compared with the prior art, the air suspension system is provided with two first thrust rods, the first motor is located between the two first thrust rods, and the second thrust rod is arranged below the first motor, so that the first motor, the first thrust rod, and the second thrust rod do not interfere with each other, thus not changing the height of the floor, being able to reduce the mass of the whole vehicle, reduce the power consumption of the whole vehicle, increase the cruising range of the electric commercial vehicle, and improve the safety of the vehicle. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.

[0020] Figure 1 is the first structural schematic diagram of the air suspension system provided by the embodiment of the present invention;

[0021] Figure 2 is the second structural schematic diagram of the air suspension system provided by the embodiment of the present invention.

[0022] In the figure:

[0023] 1, rear axle; 2, first thrust rod; 3, second thrust rod; 4, first motor; 5, air bag; 6, bracket; 7, first support; 8, second support; 9, second motor. Detailed Description of the Embodiment

[0024] The following will further elaborate on the present invention in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0025] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0027] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] As Figure 1 and Figure 2 shown, the present invention provides an air suspension system. The air suspension system includes: a rear axle 1, a vehicle frame, two first thrust rods 2, a second thrust rod 3, a first motor 4, and a plurality of air bags 5.

[0029] Specifically, the rear axle 1 is connected to the vehicle frame, the first electric motor 4 is installed on the vehicle frame, two first thrust rods 2 are respectively arranged on both sides of the first electric motor 4, and both ends of the first thrust rod 2 are respectively connected to the rear axle 1 and the vehicle frame. The second thrust rod 3 is arranged below the first electric motor 4, and both ends of the second thrust rod 3 are respectively connected to the rear axle 1 and the vehicle frame bracket 6. Part of the airbag 5 is arranged between the bottom wall on the left side of the vehicle frame and the top wall of the rear axle 1, and the other part of the airbag 5 is arranged between the bottom wall on the right side of the vehicle frame and the top wall of the rear axle 1. Compared with the prior art, this air suspension system is provided with two first thrust rods 2, the first electric motor 4 is located between the two first thrust rods 2, and the second thrust rod 3 is arranged below the first electric motor 4, so that the first electric motor 4, the first thrust rod 2 and the second thrust rod 3 do not interfere with each other, thus not changing the height of the floor, being able to reduce the mass of the whole vehicle, reduce the power consumption of the whole vehicle, increase the cruising range of the electric commercial vehicle, and improve the safety of the vehicle.

[0030] Optionally, the air suspension system further includes two brackets 6, the two brackets 6 are respectively installed at both ends of the rear axle 1, part of the airbag 5 is arranged at intervals between one of the brackets 6 and the vehicle frame, and the other part of the airbag 5 is arranged at intervals between the other bracket 6 and the vehicle frame. Specifically, the vehicle frame includes two parallel and spaced longitudinal beams, the rear axle 1 is perpendicularly connected to the two longitudinal beams, the length direction of the bracket 6 is the same as the length of the longitudinal beam, part of the airbag 5 is installed at intervals along the length direction of one of the brackets 6, and the other part of the airbag 5 is installed at intervals along the length direction of the other bracket 6, which can improve the stability of the airbag 5. At the same time, the airbag 5 is arranged along the length direction of the vehicle frame, which can improve the stability of the vehicle.

[0031] Optionally, the bracket 6 is C-shaped. Specifically, both ends of the bracket 6 are bent outward, which can make the edges on the left and right sides of the vehicle frame bear force and improve the stability of the vehicle frame.

[0032] Furthermore, the air suspension system is provided with four airbags 5, two of the airbags 5 are respectively arranged at both ends of one of the brackets 6, and the other two airbags 5 are respectively arranged at both ends of the other bracket 6. Specifically, in this embodiment, the air suspension system is provided with four airbags 5, two airbags 5 on each of the left and right sides of the vehicle frame, and the two airbags 5 on the same side are arranged at intervals. Of course, in some other embodiments, the number of airbags 5 is determined according to the actual situation and will not be elaborated here.

[0033] Optionally, the second thrust rod 3 is V-shaped, the front ends of the second thrust rod 3 are respectively connected to the left and right sides of the vehicle frame, and the rear end of the second thrust rod 3 is connected to the rear axle 1. Specifically, the front ends of the second thrust rod 3 are respectively connected to the longitudinal beams on the left and right sides of the vehicle frame, and the rear end of the second thrust rod 3 is connected to the front housing of the rear axle 1, which can stabilize the position of the rear axle 1, transmit the traction force and braking force, and prevent the rear axle 1 from shifting forward, backward, left or right during driving.

[0034] Optionally, the air suspension system further includes a first support 7. Both ends of the first support 7 are respectively connected to the front housing of the rear axle 1 and the rear end of the second thrust rod 3, which can improve the stability of the connection between the first support 7 and the rear axle 1.

[0035] Optionally, the air suspension system further includes two second supports 8. The two second supports 8 are arranged in one-to-one correspondence with the two first thrust rods 2. Both ends of the second support 8 are respectively connected to the first thrust rod 2 and the rear axle 1, which can improve the stability of the connection between the second support 8 and the rear axle 1.

[0036] Optionally, the distances between the two first thrust rods 2 and the two sides of the corresponding first motor 4 are both 65 mm. Specifically, the distance between the first thrust rod 2 on the left side of the vehicle frame and the left side surface of the first motor 4 is 65 mm; the distance between the first thrust rod 2 on the right side of the vehicle frame and the right side surface of the first motor 4 is 65 mm, and the distance between the first thrust rod 2 and the top surface of the first motor is 147 mm. During the operation of the vehicle, there will be no interference problems between the first thrust rod 2 and the first motor 4, and between the first thrust rod 2 and the rectangular pipe under the floor, ensuring the installation of the air suspension.

[0037] Optionally, the air suspension system further includes a second motor 9. The second motor 9 is installed on the vehicle frame and is located behind the first motor 4 to realize the dual-motor drive of the vehicle.

[0038] The present invention also provides a vehicle, including a power system. The vehicle further includes the air suspension system in any one of the above embodiments. The power system is installed on the vehicle frame and is used to drive the vehicle to travel. The vehicle further includes other necessary components that make up the vehicle in the prior art.

[0039] In addition, the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An air suspension system, characterized in that, Comprising: A rear axle (1), a vehicle frame, two first thrust rods (2), a second thrust rod (3), a first motor (4) and a plurality of air bags (5). The rear axle (1) is connected to the vehicle frame. The first motor (4) is installed on the vehicle frame. The two first thrust rods (2) are respectively arranged on both sides of the first motor (4), and both ends of the first thrust rod (2) are respectively connected to the rear axle (1) and the vehicle frame. The second thrust rod (3) is arranged below the first motor (4), and both ends of the second thrust rod (3) are respectively connected to the rear axle (1) and the vehicle frame bracket (6). Some of the air bags (5) are arranged between the bottom wall on the left side of the vehicle frame and the top wall of the rear axle (1), and some of the other air bags (5) are arranged between the bottom wall on the right side of the vehicle frame and the top wall of the rear axle (1).

2. The air suspension system according to claim 1, wherein The air suspension system further includes two brackets (6). The two brackets (6) are respectively installed at both ends of the rear axle (1). Some of the air bags (5) are arranged at intervals between one of the brackets (6) and the vehicle frame, and some of the other air bags (5) are arranged at intervals between the other bracket (6) and the vehicle frame.

3. The air suspension system according to claim 2, wherein The bracket (6) is in a C shape.

4. An air suspension system according to claim 2, wherein, The air suspension system is provided with four air bags (5). Two of the air bags (5) are respectively arranged at both ends of one of the brackets (6), and the other two air bags (5) are respectively arranged at both ends of the other bracket (6).

5. An air suspension system according to claim 1, characterized in that, The second thrust rod (3) is in a V shape. The front ends of the second thrust rod (3) are respectively connected to the left and right sides of the vehicle frame, and the rear end of the second thrust rod (3) is connected to the rear axle (1).

6. An air suspension system according to claim 5, characterized in that, The air suspension system further includes a first support (7). Both ends of the first support (7) are respectively connected to the front shell of the rear axle (1) and the rear end of the second thrust rod (3).

7. An air suspension system according to any one of claims 1-6, characterized in that, The air suspension system further includes two second supports (8). The two second supports (8) are arranged in one-to-one correspondence with the two first thrust rods (2). Both ends of the second support (8) are respectively connected to the first thrust rod (2) and the rear axle (1).

8. An air suspension system according to any one of claims 1-6, characterized in that, The distances between the two first thrust rods (2) and both sides of the corresponding first motor (4) are both 65 mm.

9. An air suspension system according to any one of claims 1-6, characterized in that, The air suspension system further includes a second motor (9). The second motor (9) is installed on the vehicle frame and is located behind the first motor (4).

10. A vehicle, comprising a power system, characterized in that, The vehicle further includes the air suspension system according to any one of claims 1-9. The power system is installed on the vehicle frame and is used to drive the vehicle to travel.

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