Suspension structure, unmanned vehicle chassis and unmanned vehicle

Abstract

This utility model discloses a suspension structure, an unmanned vehicle chassis, and an unmanned vehicle, relating to the field of unmanned vehicle structure technology. The suspension structure is detachably mounted to the vehicle frame beam. It includes a connecting seat, detachably mounted to the vehicle frame beam; the connecting seat includes a first connecting member; the first connecting member has a first connecting through hole along a first direction; a swing assembly includes a first end and a second end; the first end is rotatably connected to the first connecting through hole; a leaf spring assembly is disposed below the vehicle frame beam; one end of the leaf spring assembly is rotatably connected to the second end of the swing assembly; the swing assembly can swing along a second direction, thereby driving the leaf spring assembly to move along the second direction; the second direction is the extension direction of the vehicle frame beam; the first direction and the second direction are set at an angle. This suspension structure is used to improve the robustness of the connection between the leaf spring and the vehicle frame while avoiding stress concentration in the leaf spring, and simultaneously improve the lifespan of the vehicle frame.

Description

Technical Field

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

[0002] Leaf springs are the core elastic components of autonomous vehicle suspension systems. They can withstand the vehicle's weight, loads, and road impacts, and transmit forces between the frame (or body) and axle through their elastic deformation, ensuring effective force distribution. When an autonomous vehicle brakes or accelerates, the axle experiences a large counter-torque, causing the leaf spring to twist and deform. This torsional stress concentration increases the risk of leaf spring root fracture and reduces leaf spring life. Related technologies incorporate movable connecting arms on the leaf springs to alleviate stress concentration during braking or acceleration.

[0003] However, the above setup reduces the strength of the connection between the leaf spring and the frame, and stress concentration is likely to occur at the connection point between the connecting arm and the frame, reducing the frame's lifespan.

[0004] Therefore, a suspension structure is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a suspension structure, an unmanned vehicle chassis, and an unmanned vehicle, which improves the firmness of the connection between the leaf spring and the frame while avoiding stress concentration in the leaf spring, and at the same time improves the life of the frame.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, this utility model provides a suspension structure that is detachably mounted on a vehicle frame beam. The suspension structure includes: a connecting seat, detachably mounted on the vehicle frame beam; the connecting seat includes a first connecting member; the first connecting member has a first connecting through hole along a first direction; a swing assembly, including a first end and a second end; the first end is rotatably connected to the first connecting through hole; a leaf spring assembly, disposed below the vehicle frame beam; one end of the leaf spring assembly is rotatably connected to the second end of the swing assembly; the swing assembly is capable of swinging along a second direction, thereby driving the leaf spring assembly to move along the second direction; the second direction is the extension direction of the vehicle frame beam; the first direction and the second direction are set at an angle.

[0008] In some embodiments, the frame beam includes a first mounting portion and a second mounting portion arranged at an angle; the connecting seat further includes a mounting member; the mounting member is detachably mounted on the first mounting portion and the second mounting portion; the first connecting member is disposed on the lower side of the mounting member and is fixedly connected to the mounting member.

[0009] In some embodiments, the mounting component includes a third mounting portion, a fourth mounting portion, and a connecting fixing portion; the third mounting portion extends along a third direction and is detachably mounted on the first mounting portion; the third direction, the second direction, and the first direction are arranged at angles to each other; the fourth mounting portion extends along the first direction and is fixedly connected to the third mounting portion; the fourth mounting portion is detachably mounted on the second mounting portion; the connecting fixing portion is disposed on the lower side of the fourth mounting portion and is fixedly connected to the fourth mounting portion; the first connecting member is fixedly connected to the lower side of the connecting fixing portion.

[0010] In some embodiments, the fourth mounting portion includes a third end and a fourth end; the third end is fixedly connected to the third mounting portion; the connecting fixing portion includes a first fixing sub-part and a second fixing sub-part disposed at intervals along a first direction; the first fixing sub-part is fixedly connected to the third end; the second fixing sub-part is fixedly connected to the fourth end; the first connector is fixedly connected to both the first fixing sub-part and the second fixing sub-part.

[0011] In some embodiments, the first connector extends along the first direction; the connector has a mounting notch along the first direction; the mounting notch is adapted to the first connector; and the first connector is at least partially disposed within the mounting notch.

[0012] In some embodiments, the oscillating assembly includes a second connector, a first rotating member, and a second rotating member; in the first direction, the second connector is disposed on the side of the connecting seat; the first rotating member passes through the second connector along the first direction to form the first end, and the first rotating member passes through the connecting through hole along the first direction and is rotatably connected to the connecting seat; the second rotating member passes through the second connector along the first direction to form the second end, and the second rotating member passes through the leaf spring assembly along the first direction and is rotatably connected to the leaf spring assembly.

[0013] In some embodiments, the oscillating assembly further includes a first bushing fitted onto the outer peripheral wall of the first rotating member and located at least partially inside the first connecting through hole.

[0014] In some embodiments, the end of the leaf spring assembly is provided with a second connecting through hole along the first direction; the second rotating member passes through the second connecting through hole along the first direction and is rotatably connected to the leaf spring assembly; the swing assembly further includes a second bushing, which is sleeved on the second rotating member and located inside the second connecting through hole.

[0015] On the other hand, this utility model provides an unmanned vehicle chassis, including a frame and a suspension structure as described in any of the embodiments above. The frame includes a plurality of interconnected frame beams; the suspension structure is mounted on the frame beams.

[0016] On another front, this utility model provides an unmanned vehicle, including a transmission assembly and an unmanned vehicle chassis as described in the previous embodiment; the transmission assembly is mounted on the unmanned vehicle chassis.

[0017] The beneficial effects of this utility model are:

[0018] On one hand, this utility model provides a suspension structure. By setting a connecting seat, the connecting seat is detachably installed on a first mounting part and a second mounting part on a vehicle frame beam. The structure of the connecting seat is set to include a first connecting member, and a first connecting through hole is opened on the first connecting member along a first direction. A swing assembly including a first end and a second end is set. The first end of the swing assembly is rotatably connected to the first connecting through hole on the connecting seat. A leaf spring assembly is set below the vehicle frame beam. One end of the leaf spring assembly is rotatably connected to the second end of the swing assembly. In this way, the swing assembly can swing along a second direction, thereby driving the leaf spring assembly to move along the second direction. When the autonomous vehicle brakes or accelerates, the oscillating component swings in the direction of travel due to inertia. This causes the leaf spring assembly to move (oscillate) in the same direction, providing cushioning and preventing direct hard contact between the leaf spring assembly and the frame beam, which could lead to stress concentration at the root and reduce the lifespan of the leaf spring assembly or even damage it. Simultaneously, because the leaf spring assembly in this suspension structure is connected to the frame beam via a connecting seat, and the connecting seat is detachably connected to both the first and second mounting parts on the frame beam, the connecting seat can be connected to the frame beam at two different locations, increasing the strength of the connection between the connecting seat and the frame beam, and thus increasing the strength of the connection between the leaf spring assembly and the frame beam. Furthermore, this design evenly distributes the force applied by the leaf spring assembly to the frame beam at multiple connection points between the connecting seat and the frame beam, preventing stress concentration on the frame beam and thus extending its service life.

[0019] On the other hand, this utility model provides an unmanned vehicle chassis that possesses all the technical features of the aforementioned suspension structure and has the same beneficial effects as the suspension structure, which will not be repeated here. Furthermore, by adopting the aforementioned suspension structure, this unmanned vehicle chassis can effectively reduce the impact of irregular road surfaces on the vehicle frame, maintain the stability of the unmanned vehicle body, and improve the adaptability of the unmanned vehicle chassis to different road environments.

[0020] On the other hand, this utility model provides an unmanned vehicle that possesses all the technical features of the aforementioned unmanned vehicle chassis and has the same beneficial effects, which will not be repeated here. Furthermore, by adopting the aforementioned chassis, the frequency of replacement of leaf spring assemblies and maintenance of the chassis can be reduced, thereby extending the service life of the unmanned vehicle, reducing its operating costs, and improving its safety during use. In addition, adopting the aforementioned chassis expands the application scenarios of the unmanned vehicle, making it suitable for various usage scenarios, such as heavy-duty or field applications, thus improving its applicability. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a suspension structure installed on a vehicle frame beam according to a specific embodiment of this utility model;

[0022] Figure 2 This is a structural diagram of a connector provided in a specific embodiment of the present utility model;

[0023] Figure 3 This is an exploded structural diagram of a suspension structure provided in a specific embodiment of this utility model.

[0024] In the picture:

[0025] 1. Connecting seat; 11. First connecting member; 111. First connecting through hole; 12. Mounting member; 121. Third mounting part; 122. Fourth mounting part; 1221. Third end; 1222. Fourth end; 123. Connecting fixing part; 1231. First fixing sub-part; 1232. Second fixing sub-part; 13. Mounting notch; 2. Swing assembly; 21. First end; 22. Second end; 23. Second connecting member; 24. First rotating member; 25. Second rotating member; 26. First bushing; 27. Second bushing; 3. Leaf spring assembly; 31. Second connecting through hole; 10. Frame beam; 101. First mounting part; 102. Second mounting part;

[0026] X1, first direction; X2, second direction; X3, third direction. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figure 1 As shown, this embodiment provides a suspension structure mounted on a vehicle frame beam 10. Exemplarily, the vehicle frame beam 10 includes a first mounting portion 101 and a second mounting portion 102 arranged at an angle. The first mounting portion 101 and the second mounting portion 102 are, for example, two adjacent sidewalls of the vehicle frame beam 10. The suspension structure provided in this embodiment includes: a connecting seat 1, a swing assembly 2, and a leaf spring assembly 3.

[0032] The aforementioned connecting seat 1 is detachably mounted to the frame beam 10. Figure 1Taking the shown perspective as an example, the aforementioned connecting seat 1 is detachably installed on the first mounting portion 101 and the second mounting portion 102. The connecting seat 1 includes a first connecting member 11, on which a first connecting through hole 111 is formed along the first direction X1. The extending direction of the frame beam 10 is the second direction X2, where the first direction X1 and the second direction X2 are set at an angle, for example, 90°. The detachable connection between the connecting seat 1 and the frame beam 10 is achieved as follows: Multiple first mounting holes are formed in the first mounting portion 101 of the frame beam 10 along a first direction X1; multiple second mounting holes are formed in the second mounting portion 102 of the frame beam 10 along a third direction X3, where the third direction X3 forms an angle with both the second direction X2 and the first direction X1 mentioned above; simultaneously, multiple third mounting holes are formed in the connecting seat 1 along the first direction X1, each corresponding to one of the first mounting holes; and multiple fourth mounting holes are formed in the connecting seat 1 along the third direction X3, each corresponding to one of the second mounting holes. By using multiple fasteners (e.g., bolts) that pass through both the first and third mounting holes along the first direction X1 and both the second and fourth mounting holes along the third direction X3, the connecting seat 1 can be detachably mounted on the first mounting portion 101 and the second mounting portion 102 of the frame beam 10. This design is simple, easy to manufacture, and convenient for installation and disassembly.

[0033] like Figure 1 As shown, the swing assembly 2 includes a first end 21 and a second end 22. The first end 21 of the swing assembly 2 is rotatably connected to the first connecting through hole 111 of the connecting seat 1.

[0034] The aforementioned leaf spring assembly 3 is located below the vehicle frame beam 10. One end of the leaf spring assembly 3 is rotatably connected to the second end 22 of the aforementioned swing assembly 2.

[0035] The aforementioned swing assembly 2 can swing along the second direction X2, thereby driving the leaf spring assembly 3 to move along the second direction X2. Here, the second direction X2 is the extension direction of the frame beam 10, and the aforementioned first direction X1 and second direction X2 are set at an angle, for example, 90°.

[0036] Therefore, the suspension structure provided by this utility model, by setting a connecting seat 1, detachably installs the connecting seat 1 on the first mounting part 101 and the second mounting part 102 on the frame beam 10, and sets the structure of the connecting seat 1 to include a first connecting member 11, on which a first connecting through hole 111 is opened along the first direction X1; and sets a swing assembly 2 including a first end 21 and a second end 22, the first end 21 of the swing assembly 2 is rotatably connected to the first connecting through hole 111 on the connecting seat 1, and a leaf spring assembly 3 is set below the frame beam 10, one end of the leaf spring assembly 3 is rotatably connected to the second end 22 of the swing assembly 2, so that the swing assembly 2 can swing along the second direction X2, thereby driving the leaf spring assembly 3 to move along the second direction X2. When the autonomous vehicle brakes or accelerates, due to inertial force, the swing assembly 2 swings in the direction of travel of the autonomous vehicle, which in turn causes the leaf spring assembly 3 to move (swing) in the same direction of travel. This provides cushioning for the leaf spring assembly 3 and prevents stress concentration at the root caused by direct hard contact between the leaf spring assembly 3 and the frame beam 10, which could lead to reduced lifespan or even damage to the leaf spring assembly 3. Simultaneously, since the leaf spring assembly 3 in this suspension structure is connected to the frame beam 10 via the connecting seat 1, and the connecting seat 1 is simultaneously connected to the first mounting part 101 on the frame beam 10... The second mounting part 102 is detachably connected, which allows the connecting seat 1 to be connected to the frame beam 10 at different positions through two connecting parts, thereby improving the strength of the connection between the connecting seat 1 and the frame beam 10, and further improving the strength of the connection between the leaf spring assembly 3 and the frame beam 10. In addition, by setting it up in this way, the force applied by the leaf spring assembly 3 to the frame beam 10 can be evenly distributed at multiple connection positions between the connecting seat 1 and the frame beam 10, avoiding stress concentration on the frame beam 10 that could lead to damage to the frame beam 10, and improving the service life of the frame beam 10.

[0037] It is easy to understand that, with Figure 1Taking the illustrated perspective as an example, in the suspension structure provided in this embodiment, one end (right end) of the leaf spring assembly 3 is rotatably connected to the connecting seat 1 via the swing assembly 2, and further connected to the frame beam 10 via the connecting seat 1. The other end (left end) of the leaf spring assembly 3 can be connected to the frame beam 10 in the same way. Specifically, a second connecting seat is additionally provided on the frame beam 10. This second connecting seat is also detachably connected to the first mounting part 101 and the second mounting part 102 of the frame beam 10. At the same time, a second swing assembly is provided on the lower side of the second connecting seat. One end of the second swing assembly is rotatably connected to the second connecting seat, and the other end of the second swing assembly is rotatably connected to the left end of the leaf spring assembly 3. Through the above arrangement, the connection between the entire leaf spring assembly 3 and the frame beam 10 can be realized. Of course, the left end of the leaf spring assembly 3 can also be connected to the frame beam 10 in other ways. For example, only a second swing assembly can be provided between the left end of the leaf spring assembly 3 and the frame beam 10. One end of the second swing assembly is directly and rotatably connected to the frame beam 10, and the other end of the second swing assembly is rotatably connected to the left end of the leaf spring assembly 3. The connection between the entire leaf spring assembly 3 and the frame beam 10 can also be achieved through the above arrangement. Those skilled in the art can specifically set the connection method between the other end (left end) of the leaf spring assembly 3 and the frame beam 10 according to actual usage requirements, which will not be described in detail here.

[0038] In some embodiments, combined with Figure 1 , Figure 2 As shown, the aforementioned connector 1 also includes a mounting member 12. This mounting member 12 is detachably mounted to the first mounting portion 101 and the second mounting portion 102. The first connecting member 11 of the connector 1 is disposed on the lower side of the mounting member 12 and is fixedly connected to it. The fixed connection between the first connecting member 11 and the mounting member 12 is achieved, for example, by welding, or by both being manufactured using an integral molding process.

[0039] For example, such as Figure 2As shown, the mounting component 12 includes a third mounting portion 121, a fourth mounting portion 122, and a connecting fixing portion 123. The third mounting portion 121 extends along a third direction X3 and is detachably mounted to the first mounting portion 101 of the frame beam 10. Here, the third direction X3, the second direction X2, and the first direction X1 are arranged at an angle to each other, for example, 90°. The fourth mounting portion 122 of the mounting component 12 extends along the first direction X1 and is fixedly connected to the third mounting portion 121. The fourth mounting portion 122 and the third mounting portion 121 are fixedly connected, for example, by welding or by a single molding process. The fourth mounting portion 122 of the mounting component 12 is detachably mounted to the second mounting portion 102 of the frame beam 10. The connecting fixing portion 123 of the mounting component 12 is located below the fourth mounting portion 122 and is fixedly connected to it. The first connecting member 11 of the aforementioned connecting seat 1 is fixedly connected to the lower side of the connecting fixing part 123. Here, the first connecting member 11 and the connecting fixing part 123 are fixedly connected, for example, by welding. By setting the structure of the connecting seat 1 to the mounting member 12 that can be detachably connected to the first mounting part 101 and the second mounting part 102 of the frame beam 10, and setting the structure of the mounting member 12 to include the third mounting part 121, the fourth mounting part 122, and the connecting fixing part 123, the structure of the connecting seat 1 can be simplified and the manufacturing of the connecting seat 1 can be facilitated while ensuring the firmness of the connection between the connecting seat 1 and the frame beam 10. At the same time, dividing the connecting seat 1 into multiple parts allows for full utilization of materials when manufacturing multiple parts separately, avoiding material waste and saving manufacturing costs.

[0040] Furthermore, such as Figure 2 As shown, the fourth mounting portion 122 includes a third end 1221 and a fourth end 1222. The third end 1221 of the fourth mounting portion 122 is fixedly connected to the third mounting portion 121. The connecting fixing portion 123 of the connecting seat 1 includes a first fixing sub-part 1231 and a second fixing sub-part 1232 spaced apart along a first direction X1. The first fixing sub-part 1231 is fixedly connected to the third end 1221 of the fourth mounting portion 122, and the second fixing sub-part 1232 is fixedly connected to the fourth end 1222 of the fourth mounting portion 122. The fixed connection between the second fixing sub-part 1232 and the fourth end 1222 of the fourth mounting portion 122 is achieved, for example, by welding, or by a one-piece molding process. The first connecting member 11 of the connecting seat 1 is fixedly connected to both the first fixing sub-part 1231 and the second fixing sub-part 1232. With this configuration, the first connecting member 11 of the connecting seat 1 can be connected and fixed simultaneously using the first fixing part 1231 and the second fixing part 1232, which improves the firmness of the connection between the first connecting member 11 and the connecting fixing part 123, and indirectly improves the overall structural strength of the connecting seat 1.

[0041] In some embodiments, such as Figure 2 As shown, the first connecting member 11 of the aforementioned connecting seat 1 extends along a first direction X1. For example, the first connecting member 11 has a cylindrical columnar structure. A mounting notch 13 is provided on the connecting seat 1 along the first direction X1. As described above, it is easy to understand that the mounting notch 13 is located on the lower side of the connecting fixing portion 123 of the connecting seat 1. When the connecting fixing portion 123 of the connecting seat 1 includes a first fixing sub-part 1231 and a second fixing sub-part 1232, the mounting notch 13 is provided on the lower side of both the first fixing sub-part 1231 and the second fixing sub-part 1232. The mounting notch 13 is adapted to the first connecting member 11; that is, when the first connecting member 11 has a cylindrical columnar structure, the mounting notch 13 has an arc-shaped structure, and the outer diameter of the first connecting member 11 is the same as the inner diameter of the mounting notch 13. The first connecting member 11 is at least partially disposed within the mounting notch 13. The above-mentioned arrangement facilitates the positioning of the first connector 11 and the connector 1, and makes it easier for the first connector 11 to be connected to the connector 1. At the same time, by placing at least part of the first connector 11 inside the mounting notch 13, the outer peripheral wall of the first connector 11 can better contact the connector 1, further facilitating the connection between the first connector 11 and the connector 1.

[0042] In some embodiments, such as Figure 3 As shown, the aforementioned swing assembly 2 includes a second connecting member 23, a first rotating member 24, and a second rotating member 25. The second connecting member 23 is disposed on the side of the connecting seat 1 in the first direction X1. It is easily understood that the number of second connecting members 23 can be set to two, with two second connecting members 23 respectively disposed on two opposite sides of the connecting seat 1 in the first direction X1. The first rotating member 24 passes through the second connecting member 23 along the first direction X1, forming a first end 21, and the first rotating member 24 can pass through the connecting hole of the first connecting member 11 along the first direction X1 and be rotatably connected to the connecting seat 1. The second rotating member 25 passes through the second connecting member 23 along the first direction X1, forming a second end 22, and the second rotating member 25 passes through the leaf spring assembly 3 along the first direction X1 and is rotatably connected to the leaf spring assembly 3. This arrangement enables rotatable connections between both ends of the swing assembly 2 and the connecting seat 1 and the leaf spring assembly 3, respectively. The structure is simple, easy to manufacture, and convenient to install and disassemble.

[0043] In some embodiments, such as Figure 3As shown, the aforementioned swing assembly 2 also includes a first bushing 26. The first bushing 26 is fitted onto the outer peripheral wall of the first rotating member 24 and is at least partially located inside the first connecting through hole 111. Exemplarily, the first bushing 26 includes two sub-bushings symmetrically arranged relative to the first connecting member 11, each sub-bushing being located at one of the two openings of the first connecting through hole 111. The first bushing 26 may be, for example, a composite bushing, manufactured using a vulcanization process that vulcanizes the rubber together with the steel pipe fitting, resulting in a long service life and no abnormal noise issues. For example, the first bushing 26 includes an inner sleeve (core), an outer sleeve (shell), and an elastomer layer. The inner sleeve is made of materials such as high-strength alloy steel or aluminum alloy, and a snap-fit ​​groove can be provided on the outer surface of the inner sleeve for fixing the anti-collision ring or the limiting ring. The outer sleeve is made of materials such as stamped steel plate or cast metal, and the outer sleeve contacts the inner wall of the first connecting through hole 111 to provide rigid support. The elastomer layer is made of materials such as natural rubber (NR), polyurethane (PU), or hydrogenated nitrile rubber (HNBR), and the elastomer layer is formed by a vulcanization process and bonded between the inner sleeve and the outer sleeve. Of course, the first bushing 26 can also be made of other materials, such as using glass fiber reinforced rubber to make the elastomer layer, and using metal-nylon composite materials to make the inner sleeve or the outer sleeve. Those skilled in the art can flexibly set it according to actual usage requirements, which will not be described in detail here.

[0044] Furthermore, such as Figure 3 As shown, the end of the leaf spring assembly 3 has a second connecting through hole 31 along the first direction X1. The second rotating member 25 passes through the second connecting through hole 31 along the first direction X1 and is rotatably connected to the leaf spring assembly 3. The swing assembly 2 also includes a second bushing 27. The second bushing 27 is sleeved on the second rotating member 25 and is located inside the second connecting through hole 31. The structure of the second bushing 27 is, for example, the same as the structure of the first bushing 26 described above, and will not be repeated here.

[0045] The above-mentioned settings can improve the buffering and shock absorption effect of the suspension structure, reduce noise transmission, reduce wear on metal parts, and extend the service life of components.

[0046] On the other hand, this utility model provides an unmanned vehicle chassis, which includes a frame and a suspension structure as described in any of the embodiments above. The frame includes multiple interconnected frame beams 10. The suspension structure is detachably mounted to the frame beams 10. It is easy to understand that the multiple frame beams 10 include longitudinal beams, transverse beams, and connecting beams, etc., and the suspension structure is detachably mounted to the longitudinal beams. This unmanned vehicle chassis has all the technical features of the aforementioned suspension structure and has the same beneficial effects as the aforementioned suspension structure, which will not be repeated here. In addition, by adopting the aforementioned suspension structure, this unmanned vehicle chassis can effectively reduce the impact of irregular road surfaces on the frame, maintain the stability of the unmanned vehicle body, and improve the adaptability of the unmanned vehicle chassis to different road environments.

[0047] On another front, this utility model provides an unmanned vehicle, which includes a transmission assembly and an unmanned vehicle chassis as described in the previous embodiment. The transmission assembly is mounted on the unmanned vehicle chassis. This unmanned vehicle possesses all the technical features of the aforementioned unmanned vehicle chassis and has the same beneficial effects, which will not be repeated here. Furthermore, by adopting the aforementioned unmanned vehicle chassis, the frequency of replacement of the leaf spring assembly 3 and the frequency of frame maintenance can be reduced, extending the service life of the unmanned vehicle while reducing its operating costs and improving its safety during use. Additionally, adopting the aforementioned unmanned vehicle chassis expands the application scenarios of the unmanned vehicle, making it suitable for various scenarios, such as heavy-duty or field use, thus improving its applicability.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A suspension structure, detachably mounted to a vehicle frame beam (10); characterized in that, include: A connecting seat (1) is detachably installed on the vehicle frame beam (10); the connecting seat (1) includes a first connecting member (11); the first connecting member (11) has a first connecting through hole (111) along a first direction (X1); The swing assembly (2) includes a first end (21) and a second end (22); the first end (21) is rotatably connected to the first connecting through hole (111); A leaf spring assembly (3) is disposed below the frame beam (10); one end of the leaf spring assembly (3) is rotatably connected to the second end (22) of the swing assembly (2); The swing assembly (2) can swing along the second direction (X2), thereby driving the leaf spring assembly (3) to move along the second direction (X2); the second direction (X2) is the extension direction of the frame beam (10); the first direction (X1) and the second direction (X2) are set at an angle.

2. The suspension structure according to claim 1, characterized in that, The frame beam (10) includes a first mounting part (101) and a second mounting part (102) arranged at an angle; the connecting seat (1) also includes a mounting member (12); the mounting member (12) is detachably mounted on the first mounting part (101) and the second mounting part (102); The first connector (11) is disposed on the lower side of the mounting member (12) and is fixedly connected to the mounting member (12).

3. The suspension structure according to claim 2, characterized in that, The mounting component (12) includes a third mounting part (121), a fourth mounting part (122), and a connecting and fixing part (123); The third mounting part (121) extends along a third direction (X3) and is detachably mounted on the first mounting part (101); the third direction (X3), the second direction (X2) and the first direction (X1) are arranged at angles to each other; The fourth mounting part (122) extends along the first direction (X1) and is fixedly connected to the third mounting part (121); the fourth mounting part (122) is detachably mounted to the second mounting part (102); The connecting fixing part (123) is disposed on the lower side of the fourth mounting part (122) and is fixedly connected to the fourth mounting part (122); the first connecting member (11) is fixedly connected to the lower side of the connecting fixing part (123).

4. The suspension structure according to claim 3, characterized in that, The fourth mounting part (122) includes a third end (1221) and a fourth end (1222); the third end (1221) is fixedly connected to the third mounting part (121); The connecting fixing part (123) includes a first fixing sub-part (1231) and a second fixing sub-part (1232) spaced apart along a first direction (X1); the first fixing sub-part (1231) is fixedly connected to the third end (1221); the second fixing sub-part (1232) is fixedly connected to the fourth end (1222); the first connector (11) is fixedly connected to both the first fixing sub-part (1231) and the second fixing sub-part (1232).

5. The suspension structure according to claim 1, characterized in that, The first connector (11) extends along the first direction (X1); The connector (1) has an installation notch (13) along the first direction (X1); the installation notch (13) is adapted to the first connector (11); the first connector (11) is at least partially disposed within the installation notch (13).

6. The suspension structure according to any one of claims 1 to 5, characterized in that, The swing assembly (2) includes a second connector (23), a first rotating member (24), and a second rotating member (25); In the first direction (X1), the second connector (23) is disposed on the side of the connector (1); The first rotating member (24) passes through the second connecting member (23) along the first direction (X1) to form the first end (21), and the first rotating member (24) passes through the connecting through hole along the first direction (X1) and is rotatably connected to the connecting seat (1); The second rotating member (25) passes through the second connecting member (23) along the first direction (X1) to form the second end (22), and the second rotating member (25) passes through the leaf spring assembly (3) along the first direction (X1) and is rotatably connected to the leaf spring assembly (3).

7. The suspension structure according to claim 6, characterized in that, The swing assembly (2) further includes a first bushing (26) sleeved on the outer peripheral wall of the first rotating member (24) and at least partially located inside the first connecting through hole (111).

8. The suspension structure according to claim 6, characterized in that, The end of the leaf spring assembly (3) is provided with a second connecting through hole (31) along the first direction (X1); the second rotating member (25) passes through the second connecting through hole (31) along the first direction (X1) and is rotatably connected to the leaf spring assembly (3); The swing assembly (2) further includes a second bushing (27), which is sleeved on the second rotating member (25) and located inside the second connecting through hole (31).

9. An unmanned vehicle chassis, characterized in that, The vehicle includes a frame and a suspension structure as described in any one of claims 1 to 8; the frame includes a plurality of interconnected frame beams (10); the suspension structure is detachably mounted on the frame beams (10).

10. An unmanned vehicle, characterized in that, It includes a transmission assembly and the unmanned vehicle chassis as described in claim 9; the transmission assembly is mounted on the unmanned vehicle chassis.

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