An unmanned delivery vehicle

Abstract

The utility model discloses an unmanned delivery vehicle relates to unmanned transportation equipment technical field. The delivery vehicle includes power battery group, shock attenuation subassembly, carriage subassembly and frame subassembly. Frame subassembly adopts integrated design, contains chassis frame and the front, rear wheel frame of the front and rear arrangement of its lower end surface and the battery frame between both. Power battery group is installed in the battery frame, and its bottom and side are equipped with protective baffle. Two shock attenuation subassembly are arranged in the front, rear wheel frame respectively, and every shock attenuation subassembly passes through its shock attenuation connecting rod and guides the wheel impact force to the battery frame, and is connected with chassis frame through shock attenuation elastic part simultaneously, forms the coordinated damping system. The head frame is vertically fixed on the chassis top, and is connected with the carriage side wall, forms the firm anticollision structure. The utility model passes through optimization overall layout and shock attenuation design, has improved vehicle stability, shock attenuation effect and the protection ability to core component significantly.

Description

Technical Field

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

[0002] With the rapid development of e-commerce and smart logistics, unmanned delivery vehicles have been widely used as a solution for "last-mile" delivery. Existing unmanned delivery vehicles typically include basic components such as power batteries, a cargo box, and drive wheels.

[0003] However, existing unmanned delivery vehicles suffer from several common problems: First, the overall structural layout of these vehicles is often loose, with low integration of various systems (such as battery packs, drive units, and the cargo compartment). This results in insufficient overall rigidity and stability during operation, especially on rough roads, leading to severe shaking that affects the safety of transported goods and the lifespan of onboard precision equipment. Second, traditional shock absorption systems primarily serve only the wheels themselves, offering limited shock absorption and lacking coordinated design with the heavy battery pack. The battery pack experiences significant impacts during bumpy rides, posing safety hazards and impacting battery life. Furthermore, the front end has a simple structure, weak impact resistance, and insufficient connection strength with the cargo compartment.

[0004] Therefore, there is an urgent need for an unmanned delivery vehicle that is compact, rigid, has excellent shock absorption performance, and can protect core components in all directions. Utility Model Content

[0005] To address the problems of poor overall structural stability, inadequate shock absorption, susceptibility of battery packs to impacts, and fragile front structure in existing unmanned delivery vehicles, this utility model provides an unmanned delivery vehicle, the specific technical solution of which is as follows:

[0006] An unmanned delivery vehicle includes a power battery pack, shock absorbers, and a cargo box assembly. The shock absorbers are equipped with a power drive motor and drive wheels. The vehicle also includes a frame assembly. The power battery pack, shock absorbers, and cargo box assembly are respectively mounted on the frame assembly. The frame assembly includes a chassis frame, a battery frame, a front wheel frame, a rear wheel frame, and a front end frame. The chassis frame is horizontally positioned. The battery frame, front wheel frame, and rear wheel frame are fixedly mounted on the lower surface of the chassis frame, with the battery frame located between the front and rear wheel frames. Two shock absorbers are provided, each correspondingly positioned within the front and rear wheel frames. The power battery pack is fixedly mounted within the battery frame. The front end frame is vertically fixedly mounted on the upper surface of the chassis frame, directly above the front wheel frame. The cargo box assembly is fixedly mounted on the upper surface of the chassis frame.

[0007] Preferably, the shock absorption assembly includes a drive axle, a shock absorption mounting component, a shock absorption elastic component, and a shock absorption connecting rod. The drive wheels are rotatably mounted on both sides of the drive axle. The shock absorption mounting component is fixedly mounted on the drive axle. The two ends of the shock absorption connecting rod are respectively connected to the battery frame and the shock absorption mounting component. The two ends of the shock absorption elastic component are respectively connected to the chassis frame and the shock absorption mounting component.

[0008] Preferably, the shock absorber mounting component has three protruding corners, and each of the three corners of the shock absorber mounting component has a connecting part. Two of the connecting parts are located on the lower side. One end of the shock absorber connecting rod is hinged to the side end of the battery frame, and the other end is connected to the two lower connecting parts of the shock absorber mounting component. One end of the shock absorber elastic element is hinged to the lower end face of the chassis frame, and the other end is hinged to the upper connecting part of the shock absorber mounting component.

[0009] Preferably, an elastic mounting pad is provided inside the connecting part, and the shock-absorbing elastic element and the shock-absorbing connecting rod are connected to the elastic mounting pad.

[0010] Preferably, the shock-absorbing elastic element includes a shock-absorbing hydraulic rod and a shock-absorbing spring. The two ends of the shock-absorbing hydraulic rod are respectively hinged to the chassis frame and the shock-absorbing mounting component, and the shock-absorbing spring is sleeved on the shock-absorbing hydraulic rod.

[0011] Preferably, the front frame includes a front vertical frame, which is perpendicular to the chassis frame, and the side end face of the cargo box assembly is fixedly connected to the front vertical frame.

[0012] Preferably, the front frame further includes a bottom frame, a front frame, and a middle frame. The bottom frame is fixedly installed on the upper surface of the chassis frame. The front vertical frame is fixedly installed on the bottom frame near the passenger compartment assembly. The front frame is fixedly installed on the bottom frame away from the passenger compartment assembly. The middle frame is horizontally positioned, and its two ends are fixedly installed on the front frame and the front vertical frame, respectively.

[0013] Preferably, the front frame of the vehicle is inclined, with the upper side of the front frame tilted towards the direction of the vehicle's vertical frame.

[0014] Preferably, the battery frame is rectangular, and protective baffles are fixedly installed on the lower end face and the side face of the battery frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Firstly, this solution integrates the powertrain, energy storage, and cargo systems onto a highly rigid platform by designing an integrated frame assembly that includes the chassis, battery, wheel frames, and front frame. This "skeleton-like" design significantly enhances the vehicle's overall structural strength and torsional rigidity, ensuring overall stability during acceleration, steering, and driving on bumpy roads, and preventing component loosening or frame deformation caused by a loose structure.

[0017] Secondly, the front frame of this design is constructed by welding together multiple frames (bottom frame, front frame, vertical frame, and middle frame), which are firmly connected to the chassis and side walls of the vehicle body, forming a high-strength, high-rigidity crash chamber structure. The inclined front frame not only conforms to aerodynamics and reduces wind resistance, but also effectively disperses and withstands frontal collision forces, protecting expensive sensing equipment inside the vehicle (such as lidar and cameras). Attached Figure Description

[0018] Fig. 1 This is a three-dimensional structural diagram of the unmanned delivery vehicle in this application;

[0019] Fig. 2 This is a side view of the unmanned delivery vehicle in this application;

[0020] Fig. 3 This is a structural schematic diagram of the shock absorption component in the unmanned delivery vehicle of this application;

[0021] Fig. 4 This is a structural schematic diagram of the frame assembly of the unmanned delivery vehicle in this application.

[0022] Reference numerals: 1. Power battery pack; 2. Shock absorber assembly; 21. Drive axle; 22. Shock absorber mounting component; 221. Connecting part; 23. Shock absorber elastic component; 231. Shock absorber hydraulic rod; 232. Shock absorber spring; 24. Shock absorber connecting rod; 3. Car body assembly; 4. Chassis frame; 5. Battery frame; 51. Protective baffle; 6. Front wheel frame; 7. Rear wheel frame; 8. Front frame; 81. Front vertical frame; 82. Front bottom frame; 83. Front front frame; 84. Front middle frame. Detailed Implementation

[0023] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0024] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0025] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure 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, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0027] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0028] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0030] likeFigs. 1 to 4 As shown, an unmanned delivery vehicle includes a power battery pack 1, a shock absorption assembly 2, and a vehicle body assembly 3. The shock absorption assembly 2 is equipped with a power drive motor and drive wheels. The key feature is that it includes an integrated frame assembly, and the power battery pack 1, shock absorption assembly 2, and vehicle body assembly 3 are modularly mounted on the frame assembly.

[0031] The vehicle frame assembly includes a chassis frame 4, a battery frame 5, a front wheel frame 6, a rear wheel frame 7, and a front frame 8. The chassis frame 4 is horizontally positioned, serving as the base platform for the entire vehicle. The battery frame 5, front wheel frame 6, and rear wheel frame 7 are fixedly mounted on the lower surface of the chassis frame 4, with the battery frame 5 positioned between the front wheel frame 6 and the rear wheel frame 7. Two shock absorber components 2 are respectively disposed within the front wheel frame 6 and the rear wheel frame 7. The power battery pack 1 is fixedly installed within the battery frame 5. The front frame 8 is vertically fixedly mounted on the upper surface of the chassis frame 4, directly above the front wheel frame 6. The passenger compartment assembly 3 is fixedly mounted on the upper surface of the chassis frame 4, located behind the front frame 8.

[0032] Furthermore, the shock absorption assembly 2 includes a drive axle 21, a shock absorption mounting component 22, a shock absorption elastic component 23, and a shock absorption connecting rod 24. The drive wheels are rotatably mounted on both sides of the drive axle 21, and the shock absorption mounting component 22 is fixedly mounted on the drive axle 21. The two ends of the shock absorption connecting rod 24 are respectively connected to the battery frame 5 and the shock absorption mounting component 22, and the two ends of the shock absorption elastic component 23 are respectively connected to the chassis frame 4 and the shock absorption mounting component 22.

[0033] Furthermore, the shock-absorbing mounting component 22 has three protruding corners, each with a connecting portion 221, two of which are located on the lower side. One end of the shock-absorbing connecting rod 24 is hinged to the side end of the battery frame 5, and the other end is hinged to the two lower connecting portions 221 of the shock-absorbing mounting component 22. One end of the shock-absorbing elastic element 23 is hinged to the lower end face of the chassis frame 4, and the other end is hinged to the upper connecting portion 221 of the shock-absorbing mounting component 22.

[0034] Furthermore, an elastic mounting pad is provided inside the connecting part 221, and the ends of the shock-absorbing elastic member 23 and the shock-absorbing connecting rod 24 are hinged by connecting with the elastic mounting pad.

[0035] Furthermore, the shock-absorbing elastic element 23 includes a shock-absorbing hydraulic rod 231 and a shock-absorbing spring 232. The two ends of the shock-absorbing hydraulic rod 231 are respectively hinged to the chassis frame 4 and the shock-absorbing mounting component 22, and the shock-absorbing spring 232 is sleeved on the shock-absorbing hydraulic rod 231.

[0036] Furthermore, the front frame 8 includes a front vertical frame 81, which is perpendicular to the chassis frame 4. The side end face of the carriage assembly 3 is fixedly connected to the front vertical frame 81, thereby connecting the carriage and the front into a whole.

[0037] Furthermore, the front frame 8 also includes a bottom front frame 82, a front front frame 83, and a middle front frame 84. The bottom front frame 82 is fixedly installed on the upper surface of the chassis frame 4, the front vertical frame 81 is fixedly installed on the bottom front frame 82 near the side of the passenger compartment assembly 3, and the front front frame 83 is fixedly installed on the bottom front frame 82 away from the side of the passenger compartment assembly 3. The middle front frame 84 is horizontally positioned, with its two ends fixedly installed on the front front frame 83 and the front vertical frame 81, respectively, forming a stable triangular support structure.

[0038] Furthermore, the front frame 83 of the vehicle is inclined, with its upper side tilting towards the front frame 81, forming an impact-resistant structure with a sloping surface that has a flow guiding and buffering function.

[0039] Furthermore, the battery frame 5 is rectangular in shape, and protective baffles 51 are fixedly installed on its lower end face and side face, respectively, to provide all-round physical protection for the power battery pack 1.

[0040] The vehicle frame assembly in this design is welded from square tubing and includes a horizontally positioned rectangular chassis frame 4. From front to back, a front wheel frame 6, a rectangular battery frame 5, and a rear wheel frame 7 are welded sequentially to the lower end face of the chassis frame 4. Steel protective baffles 51 are bolted to the lower end face and four sides of the battery frame 5, and the power battery pack 1 is bolted and installed within the enclosed space formed by the battery frame 5, thus receiving adequate protection. The passenger compartment assembly 3 is bolted and installed to the rear of the upper end face of the chassis frame 4.

[0041] In some embodiments, the front frame 8 is vertically fixed to the foremost part of the upper surface of the chassis frame 4, positioned directly above the front wheel frame 6. The front frame 8 includes a bottom front frame 82, a front front frame 83, a front vertical frame 81, and a middle front frame 84. The bottom front frame 82 is fixed to the chassis frame 4, and the front vertical frame 81 stands on the side of the bottom front frame 82 closest to the passenger compartment, with its side surface bolted to the front sidewall of the passenger compartment assembly 3, forming a strong connection. The inclined front front frame 83 is welded to the front side of the bottom front frame 82, and the middle front frame 84 is horizontally welded between the front front frame 83 and the front vertical frame 81, greatly enhancing structural rigidity.

[0042] In some embodiments, a shock-absorbing assembly 2 is installed in each of the front and rear wheel frames 7. The shock-absorbing assembly 2 includes a drive axle 21, a shock-absorbing mounting piece 22, a shock-absorbing hydraulic rod 231, a shock-absorbing spring 232, and two shock-absorbing connecting rods 24. The drive wheels are driven by a hub motor and are rotatably mounted at both ends of the drive axle 21. The shock-absorbing mounting piece 22 is fixedly sleeved in the middle of the drive axle 21, and each of its three corner connecting portions 221 is embedded with an elastic mounting pad made of rubber. One end of each of the two shock-absorbing connecting rods 24 is hinged to the ear plate on the side of the battery frame 5 by a pin, and the other end is respectively hinged to the two connecting portions 221 at the lower part of the shock-absorbing mounting piece 22. The lower end of the shock-absorbing hydraulic rod 231 is hinged to the connecting part 221 on the upper part of the shock-absorbing mounting component 22, while the upper end is hinged to a pre-set support on the lower surface of the chassis frame 4. The shock-absorbing spring 232 is sleeved on the outside of the shock-absorbing hydraulic rod 231. When the vehicle travels on a bumpy road, the impact on the wheels is transmitted to the shock-absorbing mounting component 22 through the drive axle 21. The impact force is decomposed in three directions: one part is transmitted to the robust battery frame 5 through the two shock-absorbing connecting rods 24; another part is compressed and absorbed by the shock-absorbing hydraulic rod 231 and the shock-absorbing spring 232, and then transmitted to the chassis frame 4. This synergistic effect achieves an extremely smooth and efficient shock absorption effect.

[0043] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An unmanned delivery vehicle, comprising a power battery pack (1), a shock absorption assembly (2), and a vehicle body assembly (3), wherein the shock absorption assembly (2) is provided with a power drive motor and drive wheels, characterized in that, The vehicle includes a frame assembly, on which the power battery pack (1), shock absorber assembly (2) and vehicle body assembly (3) are respectively mounted. The frame assembly includes a chassis frame (4), a battery frame (5), a front wheel frame (6), a rear wheel frame (7) and a front frame (8). The chassis frame (4) is horizontally mounted. The battery frame (5), the front wheel frame (6) and the rear wheel frame (7) are respectively fixedly mounted on the lower end face of the chassis frame (4). The battery frame (5) is located between the front wheel frame (6) and the rear wheel frame (7). Two shock absorber assemblies (2) are provided, and the two shock absorber assemblies (2) are respectively correspondingly mounted in the front wheel frame (6) and the rear wheel frame (7). The power battery pack (1) is fixedly mounted in the battery frame (5). The front frame (8) is vertically fixedly mounted on the upper end face of the chassis frame (4). The front frame (8) is located directly above the front wheel frame (6). The vehicle body assembly (3) is fixedly mounted on the upper end face of the chassis frame (4).

2. The unmanned delivery vehicle according to claim 1, characterized in that, The shock absorption assembly (2) includes a drive axle (21), a shock absorption mounting component (22), a shock absorption elastic component (23), and a shock absorption connecting rod (24). The drive wheels are rotatably mounted on both sides of the drive axle (21). The shock absorption mounting component (22) is fixedly mounted on the drive axle (21). The two ends of the shock absorption connecting rod (24) are respectively connected to the battery frame (5) and the shock absorption mounting component (22). The two ends of the shock absorption elastic component (23) are respectively connected to the chassis frame (4) and the shock absorption mounting component (22).

3. The unmanned delivery vehicle according to claim 2, characterized in that, The shock-absorbing mounting component (22) has three protruding corners. Each of the three corners of the shock-absorbing mounting component (22) has a connecting part (221). Two connecting parts (221) are located on the lower side. One end of the shock-absorbing connecting rod (24) is hinged to the side end of the battery frame (5), and the other end is connected to the two lower connecting parts (221) of the shock-absorbing mounting component (22). One end of the shock-absorbing elastic element (23) is hinged to the lower end face of the chassis frame (4), and the other end is hinged to the upper connecting part (221) of the shock-absorbing mounting component (22).

4. The unmanned delivery vehicle according to claim 3, characterized in that, An elastic mounting pad is provided inside the connecting part (221), and the shock-absorbing elastic element (23) and the shock-absorbing connecting rod (24) are connected to the elastic mounting pad.

5. The unmanned delivery vehicle according to claim 2, characterized in that, The shock-absorbing elastic element (23) includes a shock-absorbing hydraulic rod (231) and a shock-absorbing spring (232). The two ends of the shock-absorbing hydraulic rod (231) are respectively hinged to the chassis frame (4) and the shock-absorbing mounting component (22), and the shock-absorbing spring (232) is sleeved on the shock-absorbing hydraulic rod (231).

6. The unmanned delivery vehicle according to claim 1, characterized in that, The front frame (8) includes a front vertical frame (81), which is perpendicular to the chassis frame (4), and the side end face of the carriage assembly (3) is fixedly connected to the front vertical frame (81).

7. The unmanned delivery vehicle according to claim 6, characterized in that, The front frame (8) also includes a front bottom frame (82), a front front frame (83), and a front middle frame (84). The front bottom frame (82) is fixedly installed on the upper surface of the chassis frame (4). The front vertical frame (81) is fixedly installed on the side of the front bottom frame (82) near the car body assembly (3). The front front frame (83) is fixedly installed on the side of the front bottom frame (82) away from the car body assembly (3). The front middle frame (84) is horizontally arranged. The two ends of the front middle frame (84) are fixedly installed on the front front frame (83) and the front vertical frame (81), respectively.

8. The unmanned delivery vehicle according to claim 7, characterized in that, The front frame (83) is inclined, with the upper side of the front frame (83) tilted toward the front frame (81).

9. The unmanned delivery vehicle according to claim 1, characterized in that, The battery frame (5) is rectangular, and protective baffles (51) are fixedly installed on the lower end face and the side face of the battery frame (5).

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