Commercial vehicle frame assembly and vehicle having the same

Abstract

This invention provides a commercial vehicle chassis assembly and a vehicle having the same, relating to the field of commercial vehicle chassis technology. The commercial vehicle chassis assembly includes a front crossbeam and two longitudinal beams. The two longitudinal beams extend along the length of the vehicle body and are positioned opposite each other along the width of the vehicle body. The front crossbeam is connected to the longitudinal beams via a connector. Along the length of the vehicle body, one end of the front crossbeam and one of the longitudinal beams are spaced apart to create an installation space between the front crossbeam, the connector, and a portion of the longitudinal beams. This installation space is used for at least the installation of a cooling system. This invention solves the problems of limited lateral space at the front of the chassis and low design freedom in existing technologies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of commercial vehicle chassis, in particular to a commercial vehicle frame assembly and a vehicle with the same. BACKGROUND

[0002] The conventional straight lengthening beam results in limited transverse space in the front part of the frame, affecting the effective installation and layout optimization of the radiator. The existing frame design may be too bulky, affecting the overall performance and fuel efficiency of the vehicle. The traditional design limits the flexible arrangement of other components of the chassis, reducing the design freedom.

[0003] In view of the above technical problems, no effective solution has been proposed so far. SUMMARY

[0004] The main purpose of the present application is to provide a commercial vehicle frame assembly and a vehicle with the same, to solve the problem of small transverse space in the front part of the frame and low design freedom in the prior art.

[0005] In order to achieve the above purpose, according to one aspect of the present application, a commercial vehicle frame assembly is provided, comprising: a front cross beam and longitudinal beams, the longitudinal beams are two, the two longitudinal beams extend along the length direction of the vehicle body, and the two longitudinal beams are oppositely arranged along the width direction of the vehicle body, the front cross beam is connected with the longitudinal beams through a connecting piece; wherein along the length direction of the vehicle body, the front cross beam is arranged at a distance from one end of the longitudinal beam, so as to form an installation space between the front cross beam, the connecting piece and part of the longitudinal beam, the installation space is at least used for installing a cooling system.

[0006] Further, along the width direction of the vehicle body, the extension length of at least part of the front cross beam is greater than the distance between the two longitudinal beams.

[0007] Further, the connecting piece comprises: a connecting piece body; a first connecting section, the first connecting section is connected with the connecting piece body, and along the height direction of the vehicle body, the first connecting section is located above the connecting piece body, the first connecting section is used for connecting with the longitudinal beam; a second connecting section, the second connecting section is connected with the connecting piece body, the second connecting section is arranged towards the side where the front cross beam is located, the second connecting section is used for connecting with part of the front cross beam; a third connecting section, the third connecting section is connected with the connecting piece body, along the height direction of the vehicle body, the third connecting section is arranged below the connecting piece body, the third connecting section is used for connecting with part of the front cross beam.

[0008] Further, at least one of the connecting piece body, the first connecting section and the third connecting section is provided with a weight reduction structure.

[0009] Furthermore, the front crossbeam includes an upper crossbeam, one end of which is connected to a connector and the other end of which is connected to another connector. At least a portion of the upper crossbeam extends along the width of the vehicle body. The two connectors are arranged opposite each other along the width of the vehicle body, and each connector is connected to a longitudinal beam. The side of the upper crossbeam facing the longitudinal beam and the connectors enclose a portion of the installation space.

[0010] Furthermore, the upper crossbeam is made using a thick plate stamping process.

[0011] Furthermore, at least one weight-reducing hole is provided on the upper crossbeam. When there are two or more weight-reducing holes, adjacent weight-reducing holes are spaced apart along the width direction of the vehicle body.

[0012] Furthermore, a drag hole is provided on the upper crossbeam, which is located at the connection between the upper crossbeam and the connector. A hook fixing point is provided on the second connecting section, and the hook passes through the drag hole and connects to the hook fixing point.

[0013] Furthermore, the front crossbeam also includes a lower crossbeam, one end of which is connected to a connector and the other end of which is connected to another connector. The lower crossbeam is located below the upper crossbeam and is positioned at a distance from the upper crossbeam. The lower crossbeam and the connector enclose a portion of the installation space.

[0014] Furthermore, the lower crossbeam includes: a protective crossbeam, at least a portion of which extends along the width of the vehicle body; a tow hook seat connected to the protective crossbeam, the tow hook seat having a tow hook connection hole with the opening facing the front end of the vehicle body, the tow hook connection hole being used to connect a tow hook; and a connecting bracket, one end of which is connected to a third connecting section, and the other end of which is connected to at least one of the protective crossbeam and the tow hook seat; wherein at least a portion of the connecting bracket is in contact with the surfaces of the tow hook seat and the protective crossbeam.

[0015] Furthermore, the lower crossbeam also includes a reinforcing plate and a support bracket. The reinforcing plate is connected to the protective crossbeam and is located on the outer surface of the protective crossbeam. One end of the support bracket is connected to the reinforcing plate, and the other end of the support bracket is connected to the connecting bracket.

[0016] Furthermore, the protective crossbeam includes a straight pipe section and a curved pipe section. At least one of the straight pipe section and the curved pipe section is connected to a connecting bracket. The straight pipe section extends along the width direction of the vehicle body. The curved pipe section is connected to the straight pipe section and is located on both sides of the straight pipe section. The curved pipe section is curved. The tangent at the connection between the curved pipe section and the straight pipe section is collinear with the geometric center line of the straight pipe section, or the tangent at the connection between the curved pipe section and the straight pipe section is collinear with the geometric center line of the straight pipe section at an angle.

[0017] According to another aspect of the present invention, a vehicle is also provided, the vehicle having a commercial vehicle frame assembly, the commercial vehicle frame assembly being the commercial vehicle frame assembly described in the above embodiments.

[0018] By applying the technical solution of this invention, the front crossbeam and the longitudinal beam are connected by a connector. The connector can maintain a certain distance between the front crossbeam and the longitudinal beam, thereby forming an installation space for installing the cooling system. At the same time, since the front crossbeam is not constrained by the two longitudinal beams in the width direction of the vehicle body, the installation space can more effectively open up the lateral space at the front of the frame, providing more space for cooling system components such as radiators, thus solving the problems of small lateral space at the front of the frame and low design freedom. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of a first embodiment of a commercial vehicle frame assembly according to the present invention is shown;

[0021] Figure 2 A schematic diagram of a second embodiment of the commercial vehicle frame assembly according to the present invention is shown;

[0022] Figure 3 A structural schematic diagram of a third embodiment of the commercial vehicle frame assembly according to the present invention is shown;

[0023] Figure 4 A schematic diagram of a fourth embodiment of the commercial vehicle frame assembly according to the present invention is shown;

[0024] Figure 5 A structural schematic diagram of a fifth embodiment of the commercial vehicle frame assembly according to the present invention is shown;

[0025] Figure 6 A schematic diagram of a sixth embodiment of a commercial vehicle frame assembly according to the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Longitudinal beams;

[0028] 20. Front crossbeam;

[0029] 200. Installation space;

[0030] 21. Upper crossbeam;

[0031] 210. Weight reduction hole;

[0032] 211. Trailing hole;

[0033] 22. Lower crossbeam;

[0034] 220. Drag hook connection hole;

[0035] 221. Protective crossbeam;

[0036] 2211, Straight pipe section;

[0037] 2212. Bend section;

[0038] 222. Hook mount;

[0039] 223. Connecting bracket;

[0040] 224. Reinforcing plate;

[0041] 225. Support bracket;

[0042] 30. Connectors;

[0043] 300. Weight reduction structure;

[0044] 31. Connector body;

[0045] 32. First connecting segment;

[0046] 33. Second connecting segment;

[0047] 330. Tow hook fixing point;

[0048] 34. Third connecting segment;

[0049] 40. Tow hook. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0054] Combination Figures 1 to 6 As shown, according to a specific embodiment of this application, a commercial vehicle frame assembly is provided.

[0055] Specifically, such as Figure 1 As shown, the commercial vehicle frame assembly includes a front crossbeam 20 and two longitudinal beams 10. The two longitudinal beams 10 extend along the length of the vehicle body and are arranged opposite each other along the width of the vehicle body. The front crossbeam 20 is connected to the longitudinal beams 10 via a connector 30. Along the length of the vehicle body, one end of the front crossbeam 20 and the longitudinal beams 10 are spaced apart to form an installation space 200 between the front crossbeam 20, the connector 30, and part of the longitudinal beams 10. The installation space 200 is used for at least the installation of a cooling system.

[0056] Applying the technical solution of this embodiment, the front crossbeam 20 and the longitudinal beam 10 are connected by a connector 30. The connector 30 can maintain a certain distance between the front crossbeam 20 and the longitudinal beam 10, thereby forming an installation space 200 for installing the cooling system. At the same time, since the front crossbeam 20 is not constrained by the two longitudinal beams 10 in the width direction of the vehicle body, the installation space 200 can more effectively open up the lateral space at the front of the frame, providing more space for cooling system components such as radiators, thus solving the problem of small lateral space at the front of the frame and low design freedom.

[0057] Specifically, along the width direction of the vehicle body, at least a portion of the front crossbeam 20 extends beyond the distance between the two longitudinal beams 10. By extending at least a portion of the front crossbeam 20 to the outside of the two longitudinal beams 10, an additional mounting space 200 is formed between the front crossbeam 20, the longitudinal beams 10, and the connecting member 30. The mounting space 200 provides more ample space for the installation of the cooling system, allowing for a more optimized arrangement of important components such as the radiator without affecting other vehicle functions, thereby improving heat dissipation and the overall performance of the vehicle's thermal management system. The widened design of the front crossbeam 20 also enhances the structural stability of the frame in the width direction, and the wider front crossbeam 20 provides stronger lateral support. In addition, the widened front crossbeam 20 may also serve as an additional protective device, buffering and dispersing impact forces in the event of a frontal collision, thereby protecting the vehicle interior from serious damage and improving the safety of passengers and cargo.

[0058] Furthermore, such as Figure 6 As shown, the connector 30 includes a connector body 31, a first connecting section 32, a second connecting section 33, and a third connecting section 34. The first connecting section 32 is connected to the connector body 31 and is located above the connector body 31 along the vehicle height direction. The first connecting section 32 is used to connect with the longitudinal beam 10. The second connecting section 33 is connected to the connector body 31 and is positioned towards the side where the front crossbeam 20 is located. The second connecting section 33 is used to connect with a portion of the front crossbeam 20. The third connecting section 34 is connected to the connector body 31 and is located below the connector body 31 along the vehicle height direction. The third connecting section 34 is used to connect with a portion of the front crossbeam 20.

[0059] In this embodiment, the first connecting segment 32 is connected to the connecting body 31 to establish a stable connection with the longitudinal beam 10, ensuring the stability of the frame in the longitudinal and vertical directions. The second connecting segment 33 is also connected to the connecting body 31, facing the front crossbeam 20. That is, when the vehicle is in normal driving condition, the second connecting segment 33 points forward, allowing the connecting member 30 to directly connect to a portion of the front crossbeam 20 structure. This ensures connection strength while creating an installation space 200 between the front crossbeam and the longitudinal beam. The directional nature of the second connecting segment 33 ensures that the cooling system can be installed in this area without interference, optimizing the component layout at the front of the vehicle. The third connecting segment 34 is also used to establish a connection with a portion of the front crossbeam 20. However, because its position is lower than the connecting body 31, it further ensures multi-point contact between the connecting member 30 and the front crossbeam 20, enhancing the overall stability of the connection, while supporting the formation of the installation space 200 without sacrificing the vehicle's underbody clearance.

[0060] Specifically, at least one of the connector body 31, the first connecting segment 32, and the third connecting segment 34 is provided with a weight-reduction structure 300. The weight-reduction structure 300 helps to reduce the weight of the entire front end, and further improves the overall performance and economy of the vehicle while ensuring structural strength and safety.

[0061] In one embodiment of this application, the weight-reducing structure 300 may be designed as a hollow shape, such as... Figure 6 As shown, the holes can be calculated to avoid excessive weakening along critical stress paths, thus ensuring the stability of connector 30. For some connection sections, the thickness can be appropriately reduced while ensuring safety and strength, thereby reducing material usage and weight.

[0062] Furthermore, the front crossbeam 20 includes an upper crossbeam 21, one end of which is connected to a connector 30, and the other end of which is connected to another connector 30. At least a portion of the upper crossbeam 21 extends along the width of the vehicle body. The two connectors 30 are arranged opposite each other along the width of the vehicle body, and each connector 30 is connected to a longitudinal beam 10. The side of the upper crossbeam 21 facing the longitudinal beam 10 and the connector 30 enclose a portion of the installation space 200.

[0063] In this embodiment, the upper crossbeam 21 is connected at both ends to two connectors 30 arranged opposite each other along the width direction of the vehicle body, which enhances the lateral stability of the upper crossbeam 21. The connectors 30 also connect the upper crossbeam 21 to the longitudinal beam 10, forming a stable structural frame. A partial installation space 200 is formed between the side of the upper crossbeam 21 facing the longitudinal beam 10 and the connectors 30, used to install a radiator or cooling system. Compared to traditional structures, this provides more space for the radiator or cooling system, helping to improve heat dissipation efficiency, enhance the vehicle's cooling performance, reduce unnecessary material usage, and achieve lightweighting of the crossbeam structure.

[0064] In one exemplary embodiment of this application, the upper crossbeam 21 is manufactured using a thick plate stamping process. The thick plate stamping process enables the rapid formation of complex shapes, shortens the production cycle, and improves manufacturing efficiency. Simultaneously, it reduces subsequent processing and assembly steps, lowering overall manufacturing costs. While ensuring sufficient strength and rigidity of the upper crossbeam 21, the material thickness and shape can be optimized to achieve lightweighting.

[0065] Furthermore, such as Figure 2As shown, at least one weight-reducing hole 210 is provided on the upper crossbeam 21. When there are two or more weight-reducing holes 210, adjacent weight-reducing holes 210 are spaced apart along the width direction of the vehicle body. The weight-reducing holes 210 can reduce the weight of the upper crossbeam 21. By spaced holes, weak points in strength on the same axis can be avoided, thereby achieving weight reduction while maintaining sufficient bending and torsional resistance. The weight-reducing holes 210 not only reduce material usage but also help improve airflow at the front of the vehicle, especially near the radiator. The hole design reduces obstruction of airflow, promotes the exchange of hot and cold air, thereby enhancing heat dissipation and improving the overall cooling efficiency of the vehicle.

[0066] Specifically, a drag hole 211 is provided on the upper crossbeam 21, located at the connection between the upper crossbeam 21 and the connector 30. A hook fixing point 330 is provided on the second connecting section 33, and the hook 40 passes through the drag hole 211 and connects to the hook fixing point 330. Positioning the drag hole 211 at the intersection of the upper crossbeam 21 and the connector 30 ensures that when the hook 40 is under tension, the point of force application directly falls on the strongest structure, improving the safety and reliability of towing operations. It also facilitates the installation and disassembly of the hook 40, eliminating the need for additional fasteners. Installation and disassembly can be completed simply by passing the hook through the drag hole and connecting or disconnecting it from the hook fixing point 330, simplifying the installation process and saving time. The tow hook 40 is connected to the tow hook fixing point 330 of the connector 30. The force generated by the tow hook 40 during operation is evenly distributed to the entire front crossbeam assembly, avoiding excessive stress concentration in some areas, which helps to extend the service life of the upper crossbeam 21 and the durability of the entire front structure of the vehicle.

[0067] Furthermore, the front crossbeam 20 also includes a lower crossbeam 22, one end of which is connected to a connector 30, and the other end of which is connected to another connector 30. The lower crossbeam 22 is located at the lower end of the upper crossbeam 21, and the lower crossbeam 22 is set at a distance from the upper crossbeam 21. The lower crossbeam 22 and the connector 30 enclose a partial installation space 200.

[0068] In this embodiment, the lower crossbeam 22 enhances the rigidity and stability of the front crossbeam 20. Both ends of the lower crossbeam 22 are connected to the connectors 30, improving the frame's absorption capacity and bending resistance in the event of a frontal impact, thus better protecting the vehicle and its occupants. The layered design of the lower crossbeam 22 and the upper crossbeam 21, and the mounting space 200 formed by them and the connectors 30, provides more flexible layout options for the front of the vehicle. The mounting space 200 can be used to install radiators, engine cooling systems, or other auxiliary equipment. Due to the spacing between the upper and lower crossbeams, components such as radiators can receive better ventilation, thereby improving cooling efficiency.

[0069] Specifically, such asFigure 3 , Figure 4 and Figure 5 As shown, the lower crossbeam 22 includes a protective crossbeam 221, a tow hook seat 222, and a connecting bracket 223. At least a portion of the protective crossbeam 221 extends along the width direction of the vehicle body. The tow hook seat 222 is connected to the protective crossbeam 221 and has a tow hook connection hole 220. The opening of the tow hook connection hole 220 faces the front end of the vehicle body and is used to connect a tow hook 40. One end of the connecting bracket 223 is connected to the third connecting section 34, and the other end of the connecting bracket 223 is connected to at least one of the protective crossbeam 221 and the tow hook seat 222. At least a portion of the connecting bracket 223 is in contact with the surfaces of the tow hook seat 222 and the protective crossbeam 221. The protective crossbeam 221 extends at least partially along the width direction of the vehicle body, which can improve the structural rigidity of the front of the vehicle. When the vehicle encounters a frontal collision, it can effectively prevent external objects from intruding into the bottom of the vehicle and protect the occupants from secondary injuries. In addition, the layout of the protective crossbeam 221 can also optimize the front space of the vehicle and facilitate the installation of other chassis components. The tow hook seat 222 is connected to the protective crossbeam 221 and has a tow hook connection hole 220 facing the front of the vehicle body. This ensures that the tow hook 40 can be securely installed on the lower crossbeam 22, and that the direction of force during towing is consistent with the vehicle's direction of travel, reducing instability and force loss during towing, and improving towing performance and driving safety. One end of the connecting bracket 223 is connected to the third connecting section 34, and the other end is connected to the protective crossbeam 221 or the tow hook seat 222. At least part of the connecting bracket is in contact with the surface of the tow hook seat or the protective crossbeam, which not only increases the contact area between the lower crossbeam 22 and the connecting piece 30, improving the overall rigidity of the structure, but also ensures the smooth transmission of force, avoiding stress concentration at a few points, and enhancing the stability and durability of the entire crossbeam system.

[0070] Specifically, the lower crossbeam 22 also includes a reinforcing plate 224 and a support bracket 225. The reinforcing plate 224 is connected to the protective crossbeam 221 and is disposed on the outer surface of the protective crossbeam 221. One end of the support bracket 225 is connected to the reinforcing plate 224, and the other end of the support bracket 225 is connected to the connecting bracket 223. The reinforcing plate 224 is tightly fitted to the outer surface of the protective crossbeam 221, forming a stable connection with it. This increases the surface coverage of the protective crossbeam 221, effectively dispersing the force acting on it and avoiding the problem of excessive local stress. This improves the bending and torsional resistance of the protective crossbeam 221 and enhances the vehicle's protective performance in a frontal collision. The two ends of the support bracket 225 are connected to the reinforcing plate 224 and the connecting bracket 223 respectively, forming an additional support structure. Through the connection of the support bracket 225, not only is the physical connection between the reinforcing plate 224 and the connecting bracket strengthened, ensuring the smooth transmission of force, but the rigidity of the overall structure of the lower crossbeam is further improved, making it more stable when under pressure, reducing the risk of structural deformation, and protecting the integrity of the occupants and the vehicle.

[0071] Specifically, the protective crossbeam 221 includes a straight pipe section 2211 and a bent pipe section 2212. At least one of the straight pipe section 2211 and the bent pipe section 2212 is connected to the connecting bracket 223. The straight pipe section 2211 extends along the width direction of the vehicle body. The bent pipe section 2212 is connected to the straight pipe section 2211. The bent pipe section 2212 is located on both sides of the straight pipe section 2211. The bent pipe section 2212 is curved. The tangent at the connection between the bent pipe section 2212 and the straight pipe section 2211 is collinear with the geometric center line of the straight pipe section 2211. Alternatively, the tangent at the connection between the bent pipe section 2212 and the straight pipe section 2211 is collinear with the geometric center line of the straight pipe section 2211 at an angle.

[0072] The straight tube section 2211 extends along the width direction of the vehicle body (laterally). As the main load-bearing component of the protective crossbeam 221, its straight structure facilitates the even distribution of force, ensuring effective energy absorption during frontal impacts and protecting the safety of the vehicle and its occupants. Simultaneously, the lateral arrangement of the straight tube section 2211 increases the rigidity of the front of the frame, improving the vehicle's dynamic response performance. The curved tube section 2212 connects to the straight tube section 2211 and is located on both sides of the straight tube section. Its curved shape helps guide airflow at the front of the vehicle, reducing air resistance and improving stability and fuel efficiency at high speeds. Furthermore, the curved design of the tube section not only enhances the vehicle's streamlined appearance but also provides additional lateral protection without adding extra weight. Especially in the event of a minor side impact, it acts as a buffer, reducing direct damage to the vehicle body.

[0073] In one embodiment of this application, there are two main modes for handling the connection between the bend section 2212 and the straight section 2211: one is that the tangent at the connection is collinear with the geometric center line of the straight section 2211, which ensures the consistency and strength of the structure and allows the force to be smoothly transmitted along the center line of the straight section 2211; the other is that the tangent at the connection forms a certain angle with the geometric center line of the straight section 2211, which is beneficial to disperse the point of force application and reduce stress concentration.

[0074] According to another aspect of the present invention, a vehicle is also provided, the vehicle having a commercial vehicle frame assembly, the commercial vehicle frame assembly being the commercial vehicle frame assembly in the above embodiments. By maintaining a distance between one end of the front crossbeam 20 and the longitudinal beam 10, an installation space 200 is ensured to be formed between the front crossbeam 20, the connector 30, and a portion of the longitudinal beam 10. This space is used for at least the installation of a cooling system, greatly optimizing the arrangement of the radiator and improving the vehicle's heat dissipation performance and overall cooling efficiency.

[0075] According to another aspect of the present invention, a preferred embodiment of a commercial vehicle frame assembly is also provided. Compared to traditional straight extended beams, this design maximizes the opening of the lateral space at the front end of the frame, providing more space for the cooling module. Through integrated design, the frame structure is made lighter, improving the overall performance of the vehicle.

[0076] The commercial vehicle frame assembly includes a front crossbeam 20, a lower crossbeam 22, a connector 30, a longitudinal beam 10, and a tow hook 40. The connector 30 connects the front crossbeam 20, the lower crossbeam 22, and the longitudinal beam 10 to form the front-end module assembly. The front crossbeam 20 and the lower crossbeam 22 each have two tow hook connection points on the left and right sides, providing four different tow hook positions. This allows for flexible matching with the tow hook holes pre-drilled in different cab designs, while also adapting to various user towing needs, thus enhancing the user experience. The commercial vehicle frame assembly increases the lateral space at the front of the frame by approximately 480mm.

[0077] The front crossbeam 20 utilizes a thick plate stamping process, which is simpler and less costly than the traditional crossbeams that use forged connectors and welded round tube beams. The front crossbeam 20 has a smaller longitudinal dimension, saving approximately 60mm of longitudinal space in the vehicle, providing more room for other front-end components while maintaining structural strength. The front crossbeam 20 is approximately 23% lighter than traditional crossbeams, improving overall vehicle economy and user experience. Four weight-reduction holes are located in the center of the front crossbeam 20, reducing weight while minimizing obstruction of front-end airflow, improving heat dissipation performance and overall vehicle cooling efficiency.

[0078] The lower crossbeam 22 has a symmetrical structure, its main function being to improve the rigidity of the front end of the frame and prevent occupants or lower vehicles from entering underneath the vehicle during a collision, thus preventing secondary injuries. The protective crossbeam 221 is the main load-bearing structure, with a hollow rectangular cross-section. Both ends are bent into specific arcs using molds, the arcs matching different cab shapes and stress requirements. The connecting bracket 223 is the main connecting structure, connecting the protective crossbeam 221 at one end and the connecting piece 30 at the other. The support bracket 225 has a hollow rectangular cross-section, connecting the connecting bracket 223 at one end and the protective crossbeam 221 at the other. It is used to improve the rigidity of the protective crossbeam 221 during a frontal collision, reduce deformation of the lower crossbeam 22, protect the safety of occupants, and reduce damage to the entire vehicle chassis components. The reinforcing plate 224 ensures even stress distribution and prevents stress concentration that could cause structural damage. The tow hook 40 is made by forging. One end is connected to the protective crossbeam 221, and the other end is connected to the connecting bracket 223, which improves the overall strength of the lower crossbeam 22 and provides a stable connection point for the tow hook 40.

[0079] Connector 30 connects the front crossbeam 20, the lower crossbeam 22, and the longitudinal beam 10 to form a commercial vehicle frame assembly. The third connecting section 34 is fixed to the lower crossbeam 22, the second connecting section 33 is fixed to the front crossbeam 20, and the first connecting section 32 is fixed to the longitudinal beam 10. The second connecting section 33 is provided with a tow hook fixing point 330. Connector 30 integrates the function of tow hook seat 222, has a simple structure, reduces parts and improves assembly efficiency, the integrated structure is safe and reliable, and has a good lightweight effect.

[0080] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0081] (1) Space optimization and heat dissipation efficiency improvement: By setting an installation space of 200, the commercial vehicle frame assembly not only achieves the purpose of weight reduction, but also reduces the obstruction of airflow in front of the vehicle, thereby improving the working efficiency of cooling components such as radiators and enhancing the cooling effect on the engine and other heat sources.

[0082] (2) Enhanced structural strength and stiffness: By setting up a double-layer crossbeam (upper crossbeam 21 and lower crossbeam 22) structure, combined with reinforcing plate 224 and support bracket 225, the structural strength and stiffness of the front of the frame are significantly improved, enhancing the vehicle's ability to absorb collisions and protecting the passengers and the vehicle itself.

[0083] (3) Lightweighting and cost control: The upper crossbeam 21 adopts the thick plate stamping process. Compared with the traditional forging connecting parts and round tube beam welding process, it not only simplifies the manufacturing process and reduces the production cost, but also achieves the effect of lightweighting, which helps to improve the fuel economy and handling performance of the vehicle.

[0084] (4) Enhanced flexibility of towing function: The towing hook seat 222 designed on the lower crossbeam 22 cooperates with the towing hole 211 on the upper crossbeam 21 to provide multiple different towing hook position options, so that the towing function can be flexibly adjusted according to different cab shapes and actual user needs, thereby improving user experience and vehicle versatility.

[0085] (5) Maintenance convenience: By forming a partial installation space 200, a more spacious installation and maintenance area is provided for components at the front of the vehicle, such as the radiator, which reduces maintenance costs and time consumption and improves the maintainability and service life of the vehicle.

[0086] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0087] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0088] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A commercial vehicle chassis assembly, characterized in that, include: The front crossbeam (20) and the longitudinal beam (10) are two, the two longitudinal beams (10) extend along the length of the vehicle body and are arranged opposite to each other along the width of the vehicle body. The front crossbeam (20) is connected to the longitudinal beam (10) by a connector (30). Along the length of the vehicle body, the front crossbeam (20) and the longitudinal beam (10) are positioned at a distance from one end, so that an installation space (200) is formed between the front crossbeam (20), the connector (30) and part of the longitudinal beam (10), and the installation space (200) is used for at least the installation of a cooling system.

2. The commercial vehicle frame assembly according to claim 1, characterized in that, Along the vehicle width direction, at least a portion of the front crossbeam (20) extends longer than the distance between the two longitudinal beams (10).

3. The commercial vehicle frame assembly according to claim 1 or 2, characterized in that, The connector (30) includes: Connector body (31); The first connecting section (32) is connected to the connecting body (31). Along the vehicle height direction, the first connecting section (32) is located above the connecting body (31). The first connecting section (32) is used to connect to the longitudinal beam (10). The second connecting section (33) is connected to the connector body (31), and the second connecting section (33) is disposed on the side where the front crossbeam (20) is located. The second connecting section (33) is used to connect with part of the front crossbeam (20). The third connecting section (34) is connected to the connecting body (31). Along the vehicle height direction, the third connecting section (34) is located below the connecting body (31) and is used to connect to part of the front crossbeam (20).

4. The commercial vehicle frame assembly according to claim 3, characterized in that, At least one of the connector body (31), the first connecting segment (32), and the third connecting segment (34) is provided with a weight reduction structure (300).

5. The commercial vehicle frame assembly according to claim 4, characterized in that, The front crossbeam (20) includes an upper crossbeam (21), one end of which is connected to one of the connectors (30), and the other end of which is connected to another connector (30). At least a portion of the upper crossbeam (21) extends along the width of the vehicle body. The two connectors (30) are arranged opposite each other along the width of the vehicle body. Each connector (30) is connected to a longitudinal beam (10). The side of the upper crossbeam (21) facing the longitudinal beam (10) and the connector (30) enclose a portion of the mounting space (200).

6. The commercial vehicle frame assembly according to claim 5, characterized in that, The upper crossbeam (21) is made using a thick plate stamping process.

7. The commercial vehicle frame assembly according to claim 5, characterized in that, At least one weight-reducing hole (210) is provided on the upper crossbeam (21). When there are two or more weight-reducing holes (210), two adjacent weight-reducing holes (210) are spaced apart along the width direction of the vehicle body.

8. The commercial vehicle frame assembly according to claim 6 or 7, characterized in that, The upper crossbeam (21) is provided with a drag hole (211), which is located at the connection between the upper crossbeam (21) and the connector (30). The second connecting section (33) is provided with a hook fixing point (330), and the hook (40) passes through the drag hole (211) and connects to the hook fixing point (330).

9. The commercial vehicle frame assembly according to claim 8, characterized in that, The front crossbeam (20) also includes a lower crossbeam (22), one end of which is connected to one of the connectors (30), and the other end of which is connected to another connector (30). The lower crossbeam (22) is located below the upper crossbeam (21), and the lower crossbeam (22) is set at a distance from the upper crossbeam (21). The lower crossbeam (22) and the connector (30) enclose a portion of the installation space (200).

10. The commercial vehicle frame assembly according to claim 9, characterized in that, The lower crossbeam (22) includes: The protective beam (221), at least a portion of which extends along the width direction of the vehicle body; Tow hook seat (222), the tow hook seat (222) is connected to the protective crossbeam (221), the tow hook seat (222) is provided with a tow hook connection hole (220), the opening of the tow hook connection hole (220) faces the front of the vehicle body, and the tow hook connection hole (220) is used to connect the tow hook (40). A connecting bracket (223) is provided, one end of which is connected to the third connecting section (34), and the other end of which is connected to at least one of the protective beam (221) and the tow hook seat (222). At least a portion of the connecting bracket (223) is in contact with the surfaces of the tow hook seat (222) and the protective beam (221).

11. The commercial vehicle frame assembly according to claim 10, characterized in that, The lower crossbeam (22) also includes a reinforcing plate (224) and a support bracket (225). The reinforcing plate (224) is connected to the protective crossbeam (221) and is disposed on the outer surface of the protective crossbeam (221). One end of the support bracket (225) is connected to the reinforcing plate (224), and the other end of the support bracket (225) is connected to the connecting bracket (223).

12. The commercial vehicle frame assembly according to claim 10 or 11, characterized in that, The protective crossbeam (221) includes a straight pipe section (2211) and a bent pipe section (2212). At least one of the straight pipe section (2211) and the bent pipe section (2212) is connected to the connecting bracket (223). The straight pipe section (2211) extends along the width direction of the vehicle body. The bent pipe section (2212) is connected to the straight pipe section (2211). The bent pipe section (2212) is located on both sides of the straight pipe section (2211). The bent pipe section (2212) is curved. The tangent at the connection between the bent pipe section (2212) and the straight pipe section (2211) is collinear with the geometric center line of the straight pipe section (2211). Alternatively, the tangent at the connection between the bent pipe section (2212) and the straight pipe section (2211) is collinear with the geometric center line of the straight pipe section (2211) at an angle.

13. A vehicle, characterized in that, The vehicle has a commercial vehicle frame assembly, which is the commercial vehicle frame assembly according to any one of claims 1-12.

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