An unmanned vehicle chassis and unmanned vehicle

Abstract

The utility model relates to an unmanned vehicle technical field provides an unmanned car chassis and unmanned car, the unmanned car chassis includes first axle and second axle who sets up oppositely, it is characterized in that, first axle or second axle is connected to power transmission shaft, the other end of power transmission shaft connects universal coupling, the other end of universal coupling is connected to drive motor assembly, drive motor assembly sets up in the intermediate position of first axle and second axle, the utility model discloses by drive motor assembly and transmission part centralized setting in the chassis intermediate area, effectively reduced the whole car gravity, promoted the stability when high -speed driving and sharp turn, each functional module dispersed layout, the maintenance and quick replacement of spare part of whole car are convenient, adopt the chassis structure of modularization design, and the versatility is strong, can be adapted to different size's frame, satisfies the demand of multiple scenes.

Description

Technical Field

[0001] This utility model relates to the field of unmanned vehicle technology, and in particular provides an unmanned vehicle chassis and an unmanned vehicle. Background Technology

[0002] With the rapid development of artificial intelligence, autonomous driving, and the Internet of Things, unmanned vehicles and other intelligent devices have been widely used in various fields such as urban logistics, last-mile delivery, inspection, job switching, and security. As an important component of future intelligent transportation, the performance, stability, maintainability, and level of intelligence of unmanned vehicles have a crucial impact on the overall operational efficiency of the system.

[0003] Most existing autonomous vehicle chassis follow the power layout of traditional engineering vehicles, such as mounting the drive motor near the axle or on one side of the wheel. This layout has the following drawbacks: 1. High center of gravity: Since the drive motor and transmission device are mostly located in areas other than the bottom, the overall center of gravity is raised, increasing the risk of rollover when the vehicle is turning at high speed or under heavy load; 2. Complex maintenance: The various modules are concentrated at the axle position, resulting in complex wiring harnesses and difficult maintenance; 3. Not conducive to modular integration: The chassis structure is not very versatile and is difficult to adapt to various upper structures (such as cargo boxes, environmental sensing devices, etc.), which limits the scalability of the autonomous vehicle chassis platform. Utility Model Content

[0004] The purpose of this utility model is to provide an unmanned vehicle chassis, which has the characteristics of reasonable structure, high stability, easy maintenance and easy integration.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This application provides an unmanned vehicle chassis, including a first axle and a second axle arranged opposite to each other, characterized in that the first axle or the second axle is connected to a power transmission shaft, the other end of the power transmission shaft is connected to a universal coupling, the other end of the universal coupling is connected to a drive motor assembly, and the drive motor assembly is located at the middle position of the first axle and the second axle.

[0007] Furthermore, the unmanned vehicle chassis also includes a first air storage system disposed on one side of the drive motor assembly.

[0008] Furthermore, both the first and second axles are equipped with steering gear components in the middle and wheels at both ends.

[0009] Furthermore, the steering gear assemblies on the first and second axles are rotationally symmetrical about the central axis of the chassis.

[0010] Furthermore, both the first axle and the second axle include an integral axle, and both ends of the integral axle are provided with a first shock absorber and a second shock absorber. The first shock absorber is connected to both a first air storage system and a second air storage system located on one side of either wheel via an air pipe.

[0011] Furthermore, the first damping component is a pneumatic damper, and the second damping component is a leaf spring assembly.

[0012] Furthermore, a cooling system is also provided in the middle of the first axle and / or the second axle.

[0013] This application also provides an unmanned vehicle, including a frame and an unmanned vehicle chassis as described above, wherein the frame is fixedly connected to the unmanned vehicle chassis.

[0014] The beneficial effects of this utility model are:

[0015] The unmanned vehicle chassis provided by this utility model effectively lowers the center of gravity of the vehicle and improves stability during high-speed driving and sharp turns by centrally setting the drive motor assembly and transmission components in the middle area of ​​the chassis. The distributed layout of each functional module facilitates vehicle maintenance and quick replacement of parts. The modular chassis structure has strong versatility and can be adapted to different sized frames to meet the needs of multiple scenarios.

[0016] The unmanned vehicle provided by this utility model includes the aforementioned unmanned vehicle chassis, and therefore also has the aforementioned advantages. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the unmanned vehicle chassis in one embodiment;

[0019] Figure 2 This is a structural schematic diagram of the first or second axle;

[0020] The following are the labeling elements in the figure:

[0021] 1. First axle; 2. Second axle; 3. Power transmission shaft; 4. Drive motor assembly; 5. First air storage system; 6. Steering gear assembly; 7. Wheel; 8. First shock absorber assembly; 9. Second shock absorber assembly; 10. Integrated axle; 11. Universal coupling; 12. Second air storage system; 13. Cooling system. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please refer to Figure 1 and Figure 2This application provides an unmanned vehicle chassis, a key component of an unmanned vehicle, including a first axle 1 and a second axle 2 arranged opposite each other. The first axle 1 or the second axle 2 is connected to a drive shaft 3. The other end of the drive shaft 3 is connected to a universal coupling 11, and the other end of the universal coupling 11 is connected to a drive motor assembly 4. The drive motor assembly 4 is located in the middle of the first axle 1 and the second axle 2. When the drive motor assembly 4 is connected to the first axle 1 via the universal coupling 11 and the drive shaft 3, the vehicle is front-wheel drive; otherwise, it is rear-wheel drive. When it is connected to both the first axle 1 and the second axle 2, it is four-wheel drive. This embodiment effectively lowers the vehicle's center of gravity and improves stability during high-speed driving and sharp turns by centrally locating the drive motor assembly and transmission components in the middle area of ​​the chassis. The dispersed layout of functional modules facilitates vehicle maintenance and rapid component replacement. The modular chassis structure offers strong versatility, adapting to different frame sizes and meeting various scenario requirements.

[0027] In a preferred embodiment, the unmanned vehicle chassis also includes a first air storage system 5 disposed on one side of the drive motor assembly 4. The first air storage system 5 serves as the main air storage system, consisting of an electric air pump and an aluminum alloy air tank, and controls all pneumatic damping actions. It is mainly used to provide a power source for the vehicle's air pressure braking system and to drive other pneumatic components (such as pneumatic gear shifting of the gearbox, door opening and closing mechanism, etc.).

[0028] In one embodiment, a steering gear assembly 6 is provided in the middle of the first axle 1 and the second axle 2, and wheels 7 are provided at both ends. The unmanned vehicle equipped with the chassis of this embodiment can realize four-wheel steering, providing a basic condition for bidirectional driving of the vehicle. It can realize multiple steering modes, such as two-wheel steering like traditional vehicles, or four-wheel steering, which can be divided into two situations: the front and rear wheels deflect in opposite or the same direction. When the front and rear wheels deflect in opposite directions, the turning radius can be reduced; when the front and rear wheels deflect in the same direction, crab-like driving can be realized for quick lane changes, so as to deal with complex road conditions more flexibly.

[0029] In one embodiment, the steering gear assembly 6 on the first axle 1 and the second axle 2 is rotationally symmetrical about the central axis of the chassis, so that the arrangement of each component is the same regardless of whether the chassis is moving forward or backward.

[0030] In one embodiment, both the first axle 1 and the second axle 2 include an integral axle 10. Both ends of the integral axle 10 are provided with a first shock absorber 8 and a second shock absorber 9. The first shock absorber 8 is connected to both the first air storage system 5 and the second air storage system 12 located on one side of any wheel 7 via air pipes. The second air storage system 12 is a secondary air storage system and is a redundant design. When the primary air storage system fails (such as due to air leakage or compressor failure), the secondary air storage system can independently provide braking pressure to meet functional safety standards. At the same time, it can ensure that the power steering or suspension adjustment is not interrupted and reduce the frequent start-stop of the compressor. The purpose of the isolation design between the second air storage system 12 and the first air storage system 5 is to reduce the probability of simultaneous failure of the two air storage systems and ensure the safety of the driving process.

[0031] In one embodiment, the first damping component 8 is a pneumatic damper, and the second damping component 9 is a leaf spring assembly. The pneumatic damper and the leaf spring assembly work together to form a composite damping structure, which improves road adaptability. It should be noted that the first damping component 8 and the second damping component 9 adopt existing solutions, and the specific structure and principle will not be described in detail here.

[0032] In one embodiment, a heat dissipation system 13 is also provided in the middle of the first axle 1 and / or the second axle 2. The heat dissipation system 13 adopts a combination of air cooling and liquid cooling. The main heat dissipation components include a cooling fan, a motor water cooling plate, and a heat dissipation copper pipe, which provides heat dissipation for the drive system, transmission system, etc.

[0033] This application also provides an unmanned vehicle, including a frame and an unmanned vehicle chassis as described above, wherein the frame is fixedly connected to the unmanned vehicle chassis. This unmanned vehicle includes the aforementioned unmanned vehicle chassis and therefore possesses the same advantages.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An unmanned vehicle chassis, comprising a first axle (1) and a second axle (2) disposed opposite to each other, characterized in that, The first axle (1) or the second axle (2) is connected to the power transmission shaft (3), the other end of the power transmission shaft (3) is connected to the universal coupling (11), the other end of the universal coupling (11) is connected to the drive motor assembly (4), and the drive motor assembly (4) is located in the middle of the first axle (1) and the second axle (2).

2. The unmanned vehicle chassis according to claim 1, characterized in that, It also includes a first gas storage system (5) disposed on one side of the drive motor assembly (4).

3. The unmanned vehicle chassis according to claim 1, characterized in that, The first axle (1) and the second axle (2) are each provided with a steering gear assembly (6) in the middle and wheels (7) at both ends.

4. The unmanned vehicle chassis according to claim 3, characterized in that, The steering gear assembly (6) on the first axle (1) and the second axle (2) is rotationally symmetrical about the central axis of the chassis.

5. The unmanned vehicle chassis according to claim 1, characterized in that, The first axle (1) and the second axle (2) both include an integral axle (10). The two ends of the integral axle (10) are provided with a first shock absorber (8) and a second shock absorber (9). The first shock absorber (8) is connected to the first air storage system (5) and the second air storage system (12) located on one side of any wheel (7) through an air pipe.

6. The unmanned vehicle chassis according to claim 5, characterized in that, The first shock absorber (8) is a pneumatic damper, and the second shock absorber (9) is a leaf spring assembly.

7. The unmanned vehicle chassis according to claim 1, characterized in that, A cooling system (13) is also provided in the middle of the first axle (1) and / or the second axle (2).

8. An unmanned vehicle, comprising a frame, characterized in that, It also includes the unmanned vehicle chassis as described in any one of claims 1 to 7, wherein the vehicle frame is fixedly connected to the unmanned vehicle chassis.

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