Chassis frame and chassis

Abstract

The chassis frame comprises a longitudinal beam assembly, a cross beam assembly and an auxiliary beam assembly, the longitudinal beam assembly comprises a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are arranged in a spaced mode in the first direction, and the longitudinal beam assembly is provided with a narrowing section and a broadening section in the second direction. The first longitudinal beam and the second longitudinal beam are provided with narrowing sections and broadening sections, the narrowing sections and the broadening sections are in smooth transition through camber beams, the distance between the first longitudinal beam and the second longitudinal beam on the narrowing sections is smaller than that between the broadening sections, and the cross beam assembly comprises a front cross beam and a rear cross beam, and the front cross beam is welded between the first longitudinal beam and the second longitudinal beam and located at the narrowing sections. The front cross beam is welded to the chassis frame, the rear cross beam is welded to the position between the first longitudinal beam and the second longitudinal beam and located at the broadened section, a closed frame is defined by the front cross beam, the rear cross beam, the first longitudinal beam and the second longitudinal beam, the auxiliary beam assembly is welded to the chassis frame and used for providing mounting points for electrical equipment, and the longitudinal beam assembly, the cross beam assembly and the auxiliary beam assembly are all rectangular beams. The chassis frame is few in part types, light in weight and low in production cost.

Description

Technical Field

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

[0002] Unmanned logistics vehicles are intelligent transportation tools based on autonomous driving technology. They are designed specifically for cargo transportation and can complete the entire process of warehouse management, cargo sorting, and last-mile delivery without human control. They reduce labor costs and improve logistics efficiency through automation.

[0003] Currently, the complex structure of self-made chassis frames for unmanned logistics vehicles makes it difficult to install electrical equipment. Furthermore, the different exterior designs of these electrical devices necessitate modifications to the existing connection structures on the chassis frame, increasing transportation costs. Additionally, the wide variety of parts used in existing self-made chassis frames makes sourcing these components extremely difficult. Welding multiple different types of parts into a single chassis frame is inefficient, resulting in high overall production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a chassis frame that has fewer types and numbers of parts, a smaller overall weight, lower production costs, and is easy to install electrical equipment.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A chassis frame, comprising:

[0007] The longitudinal beam assembly includes a first longitudinal beam and a second longitudinal beam. The first longitudinal beam and the second longitudinal beam are spaced apart in a first direction, and the longitudinal beam assembly has a narrowing section and a widening section in a second direction. The narrowing section and the widening section are smoothly transitioned by a curved beam. The distance between the first longitudinal beam and the second longitudinal beam in the narrowing section is smaller than the distance between the widening sections. The first direction is the width direction of the chassis frame, and the second direction is the length direction of the chassis frame.

[0008] A crossbeam assembly, comprising a front crossbeam and a rear crossbeam, wherein the front crossbeam is welded between the first longitudinal beam and the second longitudinal beam and is located at the narrowing section, and the rear crossbeam is welded between the first longitudinal beam and the second longitudinal beam and is located at the widening section, wherein the front crossbeam, the rear crossbeam, the first longitudinal beam and the second longitudinal beam form a closed frame.

[0009] A secondary beam assembly, which is welded to the longitudinal beam assembly or the cross beam assembly, is used to provide mounting points for electrical equipment;

[0010] The longitudinal beam assembly, the transverse beam assembly, and the auxiliary beam assembly are all rectangular beams.

[0011] Optionally, the crossbeam assembly further includes a first intermediate crossbeam, which is welded between the first longitudinal beam and the second longitudinal beam and located at the narrowing section. The first intermediate crossbeam is spaced apart from the front crossbeam. The front crossbeam, the first intermediate crossbeam, and the first and second longitudinal beams located between the front crossbeam and the first intermediate crossbeam form a front suspension.

[0012] The crossbeam assembly also includes a second intermediate crossbeam, which is welded between the first longitudinal beam and the second longitudinal beam and located at the widened section. The second intermediate crossbeam is spaced apart from the rear crossbeam. The rear crossbeam, the second intermediate crossbeam, and the first and second longitudinal beams located between the rear crossbeam and the second intermediate crossbeam form a rear suspension.

[0013] The first intermediate crossbeam, the second intermediate crossbeam, and the first and second longitudinal beams located between the first and second intermediate crossbeams form an intermediate frame.

[0014] Optionally, the front suspension is equipped with a front shock absorber mounting bracket and a front bumper mounting bracket;

[0015] And / or, the rear suspension is equipped with a rear shock absorber mounting bracket and a rear buffer block mounting bracket.

[0016] Optionally, the chassis frame further includes a reinforcing beam assembly, which includes at least one of a first reinforcing beam, a second reinforcing beam, a third reinforcing beam, and a fourth reinforcing beam. The first reinforcing beam is welded to the front suspension, the second and third reinforcing beams are welded to the intermediate frame, and the fourth reinforcing beam is welded to the rear suspension. The first, second, third, and fourth reinforcing beams are all rectangular beams.

[0017] Optionally, a support structure is provided between the welded end of the reinforcing beam assembly and the longitudinal beam assembly.

[0018] Optionally, the auxiliary beam assembly includes a first auxiliary beam disposed in the narrowing section and welded to the lower wall of the second longitudinal beam. The first auxiliary beam is used to install the battery.

[0019] Optionally, the auxiliary beam assembly includes a second auxiliary beam disposed at the bend and welded to the outer side wall of the first longitudinal beam. The second auxiliary beam is used to mount the vehicle controller.

[0020] Optionally, the auxiliary beam assembly includes a third auxiliary beam disposed in the widened section and welded to the inner wall of the rear crossbeam. The third auxiliary beam is used to install the two-in-one controller.

[0021] Optionally, the first longitudinal beam and the second longitudinal beam are respectively provided with a plurality of container mounting supports, the plurality of container mounting supports are respectively welded to the inner and outer sides of the longitudinal beam assembly, and the installation positions of the container mounting supports on the same longitudinal beam assembly are located on the same straight line.

[0022] Another objective of this utility model is to provide a chassis comprising a driving device, a steering device, a braking device, a control device, a power supply, and a chassis frame as described above, wherein the driving device, the steering device, the braking device, the control device, and the power supply are all mounted on the chassis frame.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a chassis frame in which the longitudinal beam assembly, cross beam assembly, and auxiliary beam assembly are all made of rectangular beams. This significantly reduces the types of parts required for manufacturing the chassis frame, facilitating the procurement of chassis frame parts. Furthermore, assembling parts of the same specifications into a chassis frame results in high welding efficiency and minimal welding redundancy, thereby reducing the overall weight and production cost of the chassis frame. Secondly, by incorporating auxiliary beam assemblies into the chassis frame, the simple structure of the auxiliary beam assemblies facilitates connection to electrical equipment, further reducing transportation costs.

[0025] This utility model also provides a chassis that, by adopting the aforementioned chassis frame, can not only reduce the cost and weight of the chassis, but also improve the space utilization rate of the chassis. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the chassis frame provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the chassis frame after removing the relevant support structures provided in this embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the chassis frame structure from another perspective provided by an embodiment of the present invention;

[0029] Figure 4 This is a left-side view of the chassis frame provided in this embodiment of the utility model;

[0030] Figure 5 This is a right-side view of the chassis frame provided in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Longitudinal beam assembly; 11. First longitudinal beam; 12. Second longitudinal beam;

[0033] 2. Crossbeam assembly; 21. Front crossbeam; 22. Rear crossbeam; 23. First intermediate crossbeam; 24. Second intermediate crossbeam;

[0034] 3. Reinforcing beam assembly; 31. First reinforcing beam; 32. Second reinforcing beam; 33. Third reinforcing beam; 34. Fourth reinforcing beam;

[0035] 4. First auxiliary beam; 5. Second auxiliary beam; 6. Third auxiliary beam;

[0036] 7. Supporting structure;

[0037] 8. Front suspension leaf spring connecting bracket; 81. Front suspension fixed bracket; 82. Front suspension movable bracket;

[0038] 9. Rear suspension leaf spring connecting bracket; 91. Rear suspension fixed bracket; 92. Rear suspension movable bracket;

[0039] 10. Container mounting brackets;

[0040] 13. Battery mounting bracket; 131. Front bracket; 132. Rear bracket; 133. Side bracket;

[0041] 14. Front shock absorber mounting bracket; 15. Rear shock absorber mounting bracket;

[0042] 16. Front buffer block mounting bracket; 17. Rear buffer block mounting bracket;

[0043] 18. Stabilizer bar mounting bracket. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] In the description of this embodiment, the terms "upper," "lower," "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.

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a chassis frame, which includes a longitudinal beam assembly 1, a crossbeam assembly 2, and an auxiliary beam assembly. The longitudinal beam assembly 1 includes a first longitudinal beam 11 and a second longitudinal beam 12, which are spaced apart in a first direction. In a second direction, the longitudinal beam assembly 1 has a narrowing section and a widening section, which are smoothly transitioned by a curved beam. The distance between the narrowing sections of the first longitudinal beam 11 and the second longitudinal beam 12 is less than the distance between the widening sections. The first direction is the width direction of the chassis frame, and the second direction is the length direction of the chassis frame. The crossbeam assembly 2 includes a front crossbeam 21 and a rear crossbeam 22. The front crossbeam 21 is welded between the first longitudinal beam 11 and the second longitudinal beam 12 and located at the narrowing section. The rear crossbeam 22 is welded between the first longitudinal beam 11 and the second longitudinal beam 12 and located at the widening section. The front crossbeam 21, the rear crossbeam 22, the first longitudinal beam 11, and the second longitudinal beam 12 form a closed frame. The auxiliary beam assembly is welded onto either the longitudinal beam assembly 1 or the transverse beam assembly 2. The auxiliary beam assembly provides mounting points for electrical equipment. The longitudinal beam assembly 1, the transverse beam assembly 2, and the auxiliary beam assembly are all rectangular beams.

[0049] It should be noted that a rectangular beam refers to a beam structure with a rectangular cross-section, including an upper wall, a lower wall, and two side walls. For ease of description, in this embodiment, the side wall of the rectangular beam located inside the chassis frame is called the inner side wall, and the side wall of the rectangular beam located outside the chassis frame is called the outer side wall.

[0050] Optionally, in this embodiment, the longitudinal beam assembly 1 is a rectangular beam made of Q355B material, with dimensions of 80mm (height) × 40mm (width) × 3mm (thickness); the transverse beam assembly 2 is a rectangular beam made of Q355B material, with dimensions of 40mm (height) × 50mm (width) × 3mm (thickness); and the auxiliary beam assembly is a rectangular beam made of Q355B material, with dimensions of 30mm (height) × 30mm (width) × 1.5mm (thickness).

[0051] The longitudinal beam assembly 1, crossbeam assembly 2, and auxiliary beam assembly of this chassis frame all use rectangular beams of the same material, which greatly reduces the types of parts used in manufacturing the chassis frame and facilitates the procurement of chassis frame parts. Furthermore, assembling parts of the same specifications into a chassis frame results in high welding efficiency and less welding redundancy, thereby reducing the overall weight and production cost of the chassis frame. Secondly, the chassis frame is designed with narrowing and widening sections along its length, and the distance between the first longitudinal beam 11 and the second longitudinal beam 12 in the narrowing section is smaller than the distance between the widening sections. The narrowing section provides greater steering space for the front wheels, increasing the wheel turning angle and reducing the overall turning radius of the vehicle. The widening section ensures that the overall strength and rigidity of the chassis frame meet the requirements. Simultaneously, the transition between the narrowing and widening sections is smooth via a curved beam, avoiding large stress concentrations in the transition section and further ensuring the overall rigidity of the chassis frame. Finally, by installing auxiliary beam assemblies on the chassis frame, the simple structure of the auxiliary beam assemblies and their ease of connection with electrical equipment can reduce transportation costs.

[0052] like Figure 2 As shown, the crossbeam assembly 2 also includes a first intermediate crossbeam 23, which is welded between the first longitudinal beam 11 and the second longitudinal beam 12 and located at the narrowing section. The first intermediate crossbeam 23 is spaced apart from the front crossbeam 21. The front crossbeam 21, the first intermediate crossbeam 23, and the first longitudinal beam 11 and the second longitudinal beam 12 located between the front crossbeam 21 and the first intermediate crossbeam 23 form the front suspension.

[0053] Optionally, in this embodiment, the first intermediate crossbeam 23 is made of Q355B material and is a rectangular beam with dimensions of 40mm (height) × 50mm (width) × 3mm (thickness), thereby further reducing the types of parts used in manufacturing the chassis frame.

[0054] like Figure 2 As shown, the crossbeam assembly 2 also includes a second intermediate crossbeam 24, which is welded between the first longitudinal beam 11 and the second longitudinal beam 12 and located at the widened section. The second intermediate crossbeam 24 is spaced apart from the rear crossbeam 22. The rear crossbeam 22, the second intermediate crossbeam 24, and the first longitudinal beam 11 and the second longitudinal beam 12 located between the rear crossbeam 22 and the second intermediate crossbeam 24 form a rear suspension.

[0055] Optionally, in this embodiment, the second intermediate crossbeam 24 is made of Q355B material and is a rectangular beam with a height of 40mm, width of 50mm, and thickness of 3mm, thereby further reducing the types of parts used in manufacturing the chassis frame.

[0056] like Figure 2 As shown, the first intermediate crossbeam 23, the second intermediate crossbeam 24, and the first longitudinal beam 11 and the second longitudinal beam 12 located between the first intermediate crossbeam 23 and the second intermediate crossbeam 24 form an intermediate frame.

[0057] In this embodiment of the utility model, the chassis frame is a single-layer structure. Compared with the double-layer front suspension and rear suspension structure commonly found on existing chassis frames, this embodiment significantly reduces the total number of parts by setting a single-layer chassis frame structure, reduces the welding time required to manufacture the chassis frame, and reduces the overall weight of the chassis frame. At the same time, the entire chassis frame is made of rectangular beams of the same material, which further significantly reduces the welding difficulty and production cost of the chassis frame.

[0058] In some embodiments, such as Figure 2 As shown, the chassis frame also includes a reinforcing beam assembly 3, which comprises a first reinforcing beam 31, a second reinforcing beam 32, a third reinforcing beam 33, and a fourth reinforcing beam 34. The first reinforcing beam 31 is welded into the front suspension, the second and third reinforcing beams 32 and 33 are welded into the intermediate frame, and the fourth reinforcing beam 34 is welded into the rear suspension. By incorporating the reinforcing beam assembly 3 into the front, rear, and intermediate suspensions, the rigidity and strength of these suspensions can be improved, further ensuring the overall rigidity and strength of the chassis frame.

[0059] Optionally, in this embodiment, the first reinforcing beam 31, the second reinforcing beam 32, the third reinforcing beam 33 and the fourth reinforcing beam 34 are all made of Q355B and are rectangular beams with a height of 40mm, a width of 50mm and a thickness of 3mm, thereby further reducing the types of parts used in manufacturing the chassis frame.

[0060] like Figure 1 and Figure 3 As shown, a support structure 7 is provided between the welded end of the reinforcing beam assembly 3 and the longitudinal beam assembly 1. By providing the support structure 7, the connection strength between the reinforcing beam assembly 3 and the longitudinal beam assembly 1 can be further enhanced, thereby increasing the overall structural strength of the chassis frame.

[0061] Optionally, such as Figure 3As shown, in this embodiment, the support structure 7 is a right-angled triangular support block. One right-angled face of the support structure 7 is fixedly connected to the reinforcing beam assembly 3, and the other right-angled face is fixedly connected to the longitudinal beam assembly 1. The triangular support block has a stable structure, strong support capacity, and is simple to manufacture. It is understood that in some other embodiments, the support structure 7 may also adopt other types of structures, such as reinforcing ribs, which are not limited here.

[0062] like Figure 1 As shown, the auxiliary beam assembly includes a first auxiliary beam 4, which is disposed in the narrowing section and welded to the lower wall of the second longitudinal beam 12. The first auxiliary beam 4 is used to install the battery. Specifically, as shown... Figure 1 , Figure 2 and Figure 3 As shown, the first auxiliary beam 4 is roughly "U"-shaped, including a vertical portion welded to the lower wall of the second longitudinal beam 12 and extending downwards, a first horizontal portion vertically disposed at the welded end of the vertical portion and extending away from the chassis frame, and a second horizontal portion vertically disposed at the other end of the vertical portion and extending away from the chassis frame, wherein the length of the first horizontal portion is shorter than that of the second horizontal portion. The battery is installed between the first horizontal portion and the second horizontal portion. Since the length of the first horizontal portion is shorter than that of the second horizontal portion, it is easier to install and remove the battery. At the same time, the space under the chassis frame is not utilized, and placing the first auxiliary beam 4 and the battery under the chassis frame can improve space utilization.

[0063] It should be noted that the storage battery is existing technology and will not be discussed further here.

[0064] like Figure 1 As shown, the auxiliary beam assembly also includes a second auxiliary beam 5, which is disposed at the curved beam between the narrowing section and the widening section. The second auxiliary beam 5 is welded to the outer wall of the first longitudinal beam 11 and is used to mount the vehicle controller. Specifically, as... Figure 1 and Figure 2 As shown, the second auxiliary beam 5 is located in the same horizontal plane as the chassis frame. It includes a first vertical part welded perpendicularly to the widening section of the curved beam, a second vertical part welded perpendicularly to the narrowing section of the curved beam, and a connecting part that connects the non-welded ends of the first and second vertical parts. The curved beam section between the welded ends of the second auxiliary beam 5 and the first and second vertical parts roughly forms a "U"-shaped structure, and the vehicle controller is installed inside the "U"-shaped structure. By installing the vehicle controller on the second auxiliary beam 5, which is located in the same horizontal plane as the chassis frame and on the outside of the chassis frame, it is easier for the vehicle controller to connect with other external equipment.

[0065] It should be noted that the vehicle controller is existing technology and will not be described in detail here.

[0066] like Figure 1As shown, the auxiliary beam assembly also includes a third auxiliary beam 6, which is disposed in the widened section and welded to the inner wall of the rear crossbeam 22. The third auxiliary beam 6 is used to install the two-in-one controller. Specifically, as... Figure 1 and Figure 3 As shown, the third auxiliary beam 6 is a rectangular beam. One end of the third auxiliary beam 6 is welded to the rear crossbeam 22, and the other end is welded to the fourth reinforcing beam 34. The third auxiliary beam 6 is perpendicular to both the rear crossbeam 22 and the fourth reinforcing beam 34. The two-in-one controller is installed on the lower side of the third auxiliary beam 6. By installing the two-in-one controller under the chassis frame, the space utilization under the chassis frame is further improved.

[0067] It should be noted that the two-in-one controller is existing technology and will not be described in detail here.

[0068] like Figure 1 and Figure 3 As shown, a battery mounting bracket 13 is provided on the intermediate suspension of the chassis frame. The battery mounting bracket 13 includes at least one of a front bracket 131, a rear bracket 132, and a side bracket 133. The front bracket 131 is welded to the second reinforcing beam 32, the rear bracket 132 is welded to the second intermediate crossbeam 24, and the side bracket 133 is welded to the longitudinal beam assembly 1 between the second reinforcing beam 32 and the second intermediate crossbeam 24. By providing the battery mounting bracket 13, the battery can be suspended under the intermediate suspension.

[0069] like Figure 1 and Figure 3 As shown, the front bracket 131, rear bracket 132, and side bracket 133 are all shovel-shaped structures. Each shovel-shaped structure includes an L-shaped main body plate with right-angled triangular side plates on both sides. The two right-angled sides of the side plates are connected to the vertical and horizontal portions of the main body plate, respectively. Specifically, the vertical portion of the main body plate of the front bracket 131 is welded to the second reinforcing beam 32, and the horizontal portion is located below the chassis frame for battery mounting. The vertical portion of the main body plate of the side bracket 133 is welded to the outer wall of the longitudinal beam assembly 1, and the horizontal portion is located below the chassis frame for battery mounting. The vertical portion of the main body plate of the rear bracket 132 is welded to the second intermediate crossbeam 24, and the horizontal portion is located below the chassis frame for battery mounting.

[0070] Optionally, in this embodiment, the battery mounting brackets 13 are all sheet metal bending parts, which are not only simple to manufacture, but also easy to weld onto the chassis frame.

[0071] like Figure 1 and Figure 3 As shown, multiple container mounting supports 10 are respectively provided on the first longitudinal beam 11 and the second longitudinal beam 12. The multiple container mounting supports 10 are respectively welded to the inner and outer sides of the longitudinal beam assembly 1, and the installation positions of the container mounting supports 10 on the same longitudinal beam assembly 1 are located on the same straight line.

[0072] like Figure 1 and Figure 3 As shown, the container mounting support 10 is roughly shovel-shaped, comprising an L-shaped main plate and right-angled triangular side plates on both sides of the main plate. The two right-angled sides of the side plates are connected to the vertical and horizontal portions of the main plate, respectively. Triangular ribs are also provided between the two side plates to further enhance the structural strength of the container mounting support 10. Specifically, the vertical portion of the main plate of the container mounting support 10 located in the narrowing section is welded to the outer wall of the longitudinal beam assembly 1, while the vertical portion of the main plate of the container mounting support 10 located in the widening section is welded to the inner wall of the longitudinal beam assembly 1. By aligning the container mounting supports 10 in the narrowing and widening sections on the same straight line, the arrangement of supports on the container's bottom frame is facilitated.

[0073] Optionally, in this embodiment, the container mounting supports 10 are all sheet metal bending parts, which are not only simple to manufacture, but also easy to weld onto the longitudinal beam assembly 1.

[0074] In some embodiments, such as Figure 1 and Figure 3 As shown, a front suspension leaf spring connecting bracket 8 is provided on the front suspension, and the front suspension leaf spring connecting bracket 8 is welded to the longitudinal beam assembly 1. The front suspension leaf spring connecting bracket 8 is used to install the front suspension leaf spring. A rear suspension leaf spring connecting bracket 9 is provided on the rear suspension, and the rear suspension leaf spring connecting bracket 9 is welded to the longitudinal beam assembly 1. The rear suspension leaf spring connecting bracket 9 is used to install the rear suspension leaf spring.

[0075] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, the front suspension leaf spring connecting support 8 includes a front suspension fixed support 81 and a front suspension movable support 82. The upper part of the front suspension fixed support 81 can be welded to the lower wall, inner wall, and outer wall of the longitudinal beam assembly 1, and the lower part of the front suspension fixed support 81 is used to connect the fixed end of the front suspension leaf spring. The upper part of the front suspension movable support 82 can be welded to the lower wall, inner wall, and outer wall of the longitudinal beam assembly 1, and the lower part of the front suspension movable support 82 is used to connect the movable end of the front suspension leaf spring.

[0076] like Figure 1 , Figure 4 and Figure 5As shown, the rear suspension leaf spring connecting support 9 includes a rear suspension fixed support 91 and a rear suspension movable support 92. The upper part of the rear suspension fixed support 91 can be welded to the lower wall, inner wall, and outer wall of the longitudinal beam assembly 1, and the lower part of the rear suspension fixed support 91 is used to connect to the fixed end of the rear suspension leaf spring. The upper part of the rear suspension movable support 92 can be welded to the lower wall, inner wall, and outer wall of the longitudinal beam assembly 1, and the lower part of the rear suspension movable support 92 is used to connect to the movable end of the rear suspension leaf spring.

[0077] By installing leaf springs on the front and rear suspensions, the leaf springs utilize the friction between the leaves to provide significant cushioning and vibration damping capabilities. This effectively absorbs and disperses impact forces, reducing the impact on the vehicle body and cargo, protecting cargo safety, and extending the service life of vehicle components. It should be noted that leaf springs are existing technology and will not be elaborated upon further here.

[0078] It is understood that in some other embodiments, leaf springs may be installed only on the front suspension as needed, in which case only a front suspension leaf spring connecting bracket 8 needs to be provided on the front suspension, or leaf springs may be installed only on the rear suspension, in which case only a rear suspension leaf spring connecting bracket 9 needs to be provided on the rear suspension. No restrictions are imposed here.

[0079] Optionally, in this embodiment, both the front suspension leaf spring connecting support 8 and the rear suspension leaf spring connecting support 9 are stamped parts. Using stamped parts facilitates the production of the front suspension leaf spring connecting support 8 and the rear suspension leaf spring connecting support 9.

[0080] In some embodiments, such as Figure 1 and Figure 3 As shown, a front shock absorber mounting bracket 14 and a front bumper mounting bracket 16 are also provided on the longitudinal beam assembly 1 of the front suspension. The front shock absorber mounting bracket 14 is used to mount the shock absorber, and the front bumper mounting bracket 16 is used to mount the bumper. Specifically, both the first longitudinal beam 11 and the second longitudinal beam 12 are provided with front shock absorber mounting brackets 14, which are welded to the outer wall of the longitudinal beam assembly 1. Similarly, both the first longitudinal beam 11 and the second longitudinal beam 12 are provided with front bumper mounting brackets 16, which are welded to the lower wall of the longitudinal beam assembly 1.

[0081] like Figure 1 and Figure 3As shown, a rear shock absorber mounting bracket 15 is provided on the fourth reinforcing beam 34, and a rear buffer block mounting bracket 17 is provided on the longitudinal beam assembly 1 of the rear suspension. The rear shock absorber mounting bracket 15 is used to mount the shock absorber, and the rear buffer block mounting bracket 17 is used to mount the buffer block. Specifically, two rear shock absorber mounting brackets 15 are welded to the fourth reinforcing beam 34, and rear buffer block mounting brackets 17 are provided on both the first longitudinal beam 11 and the second longitudinal beam 12, and the rear buffer block mounting brackets 17 are welded to the lower wall of the longitudinal beam assembly 1.

[0082] By equipping the chassis frame with buffer blocks and shock absorbers, the buffer blocks can elastically deform when the wheels are impacted, absorbing some of the energy; the shock absorbers control the compression and rebound speed of the buffer blocks, dissipating vibration energy and effectively absorbing vibrations from the road surface. This reduces the impact of vibrations on the vehicle body and cargo, thereby improving ride smoothness, protecting cargo safety, and enhancing vehicle durability. It should be noted that both buffer blocks and shock absorbers are existing technologies and will not be elaborated upon further here.

[0083] It is understood that in some other embodiments, only the front shock absorber mounting bracket 14 and the front buffer block mounting bracket 16 may be installed, or only the rear shock absorber mounting bracket 15 and the rear buffer block mounting bracket 17 may be installed, depending on actual needs, and no limitation is made here.

[0084] like Figure 1 and Figure 3 As shown, a stabilizer bar mounting bracket 18 is also provided on the first reinforcing beam 31. The stabilizer bar mounting bracket 18 is used to mount the lateral stabilizer bar. Specifically, as... Figure 2 and Figure 5 As shown, two stabilizer bar mounting supports 18 are welded onto the first reinforcing beam 31.

[0085] By installing a stabilizer bar, when the chassis turns, the stabilizer bar twists, generating a counter-force that suppresses lateral body roll and maintains relative balance. This helps to distribute the load more evenly across the four wheels, preventing excessive load on one side of the wheels due to excessive body roll, which could affect the vehicle's handling stability. It should be noted that stabilizer bars are existing technology and will not be elaborated upon here.

[0086] The chassis frame provided in this embodiment uses rectangular beams of the same material for its longitudinal beam assembly 1, crossbeam assembly 2, auxiliary beam assembly, and reinforcing beam assembly 3. This significantly reduces the types of parts used in manufacturing the chassis frame, facilitating the procurement of chassis frame parts. Furthermore, assembling parts of the same specifications into a chassis frame results in high welding efficiency and minimal welding redundancy, thereby reducing the overall weight and production cost of the chassis frame. Secondly, the chassis frame is designed with narrowing and widening sections along its length, and the distance between the first longitudinal beam 11 and the second longitudinal beam 12 in the narrowing section is smaller than the distance between the widening sections. The narrowing section provides greater steering space for the front wheels, increasing the wheel turning angle and reducing the overall turning radius of the vehicle. The widening section ensures that the overall strength and rigidity of the chassis frame meet the requirements. Simultaneously, the transition between the narrowing and widening sections is smooth via a curved beam, avoiding large concentrated stresses in the transition section between the narrowing and widening sections, further ensuring the overall rigidity of the chassis frame. Finally, by installing auxiliary beam assemblies on the chassis frame, the simple structure of the auxiliary beam assemblies and their ease of connection to electrical equipment can further reduce transportation costs.

[0087] This embodiment also provides a chassis, which includes a running gear, a steering gear, a braking gear, a control device, a power supply, and a chassis frame as described above. The running gear primarily receives engine torque from the transmission system and generates driving force to propel the vehicle. The steering gear primarily controls the driving direction. The braking gear primarily controls vehicle deceleration and stopping. The control device primarily controls other devices on the chassis. The power supply primarily provides electrical energy to other devices to ensure their normal operation. The running gear, steering gear, braking gear, control device, and power supply are all mounted on the chassis frame.

[0088] It should be noted that the driving device, steering device, braking device, control device and power supply are all existing technologies and will not be described in detail here.

[0089] The chassis provided in this embodiment, by adopting the aforementioned chassis frame, not only reduces the cost and weight of the chassis, but also facilitates the installation of electrical equipment on the chassis through the auxiliary beam assembly provided on the chassis frame, thereby improving the space utilization of the chassis.

[0090] 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 chassis frame, characterized in that, include: A longitudinal beam assembly (1) includes a first longitudinal beam (11) and a second longitudinal beam (12). The first longitudinal beam (11) and the second longitudinal beam (12) are spaced apart in a first direction, and the longitudinal beam assembly (1) has a narrowing section and a widening section in a second direction. The narrowing section and the widening section are smoothly transitioned by a curved beam. The distance between the first longitudinal beam (11) and the second longitudinal beam (12) in the narrowing section is smaller than the distance between the widening sections. The first direction is the width direction of the chassis frame, and the second direction is the length direction of the chassis frame. A crossbeam assembly (2) includes a front crossbeam (21) and a rear crossbeam (22). The front crossbeam (21) is welded between the first longitudinal beam (11) and the second longitudinal beam (12) and is located at the narrowing section. The rear crossbeam (22) is welded between the first longitudinal beam (11) and the second longitudinal beam (12) and is located at the widening section. The front crossbeam (21), the rear crossbeam (22), the first longitudinal beam (11), and the second longitudinal beam (12) form a closed frame. Auxiliary beam assembly, which is welded to the longitudinal beam assembly (1) or the transverse beam assembly (2), is used to provide mounting points for electrical equipment; The longitudinal beam assembly (1), the transverse beam assembly (2), and the auxiliary beam assembly are all rectangular beams.

2. The chassis frame according to claim 1, characterized in that, The crossbeam assembly (2) further includes a first intermediate crossbeam (23), which is welded between the first longitudinal beam (11) and the second longitudinal beam (12) and located at the narrowing section. The first intermediate crossbeam (23) is spaced apart from the front crossbeam (21). The front crossbeam (21), the first intermediate crossbeam (23), and the first longitudinal beam (11) and the second longitudinal beam (12) located between the front crossbeam (21) and the first intermediate crossbeam (23) form a front suspension. The crossbeam assembly (2) further includes a second intermediate crossbeam (24), which is welded between the first longitudinal beam (11) and the second longitudinal beam (12) and located at the widened section. The second intermediate crossbeam (24) is spaced apart from the rear crossbeam (22). The rear crossbeam (22), the second intermediate crossbeam (24), and the first longitudinal beam (11) and the second longitudinal beam (12) located between the rear crossbeam (22) and the second intermediate crossbeam (24) form a rear suspension. The first intermediate crossbeam (23), the second intermediate crossbeam (24), and the first longitudinal beam (11) and the second longitudinal beam (12) located between the first intermediate crossbeam (23) and the second intermediate crossbeam (24) form an intermediate frame.

3. The chassis frame according to claim 2, characterized in that, The front suspension is equipped with a front shock absorber mounting bracket (14) and a front buffer block mounting bracket (16); And / or, the rear suspension is equipped with a rear shock absorber mounting bracket (15) and a rear buffer block mounting bracket (17).

4. The chassis frame according to claim 2, characterized in that, The chassis frame also includes a reinforcing beam assembly (3), which includes at least one of a first reinforcing beam (31), a second reinforcing beam (32), a third reinforcing beam (33), and a fourth reinforcing beam (34). The first reinforcing beam (31) is welded to the front suspension, the second reinforcing beam (32) and the third reinforcing beam (33) are welded to the intermediate frame, and the fourth reinforcing beam (34) is welded to the rear suspension. The first reinforcing beam (31), the second reinforcing beam (32), the third reinforcing beam (33), and the fourth reinforcing beam (34) are all rectangular beams.

5. The chassis frame according to claim 4, characterized in that, A support structure (7) is provided between the welded end of the reinforcing beam assembly (3) and the longitudinal beam assembly (1).

6. The chassis frame according to claim 1, characterized in that, The auxiliary beam assembly includes a first auxiliary beam (4), which is disposed in the narrowing section and welded to the lower wall of the second longitudinal beam (12). The first auxiliary beam (4) is used to install the battery.

7. The chassis frame according to claim 1, characterized in that, The auxiliary beam assembly includes a second auxiliary beam (5), which is disposed at the bend and welded to the outer wall of the first longitudinal beam (11). The second auxiliary beam (5) is used to install the vehicle controller.

8. The chassis frame according to claim 1, characterized in that, The auxiliary beam assembly includes a third auxiliary beam (6), which is disposed in the widened section and welded to the inner wall of the rear crossbeam (22). The third auxiliary beam (6) is used to install the two-in-one controller.

9. The chassis frame according to any one of claims 1-8, characterized in that, The first longitudinal beam (11) and the second longitudinal beam (12) are respectively provided with a plurality of container mounting supports (10). The plurality of container mounting supports (10) are respectively welded to the inner and outer sides of the longitudinal beam assembly (1), and the installation positions of the container mounting supports (10) on the same longitudinal beam assembly (1) are located on the same straight line.

10. A chassis, characterized in that, It includes a driving device, a steering device, a braking device, a control device, a power supply, and a chassis frame as described in any one of claims 1-9, wherein the driving device, the steering device, the braking device, the control device, and the power supply are all mounted on the chassis frame.

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