Vehicle frame body, box beam type vehicle frame assembly, and vehicle

Abstract

A vehicle frame body, a box beam type vehicle frame assembly, and a vehicle. The vehicle frame body comprises a longitudinal box beam (10) and a top plate (20); the longitudinal box beam (10) and the top plate (20) are of an integrally formed structure; the longitudinal box beam (10) is connected to the lower surface of the top plate (20); and the longitudinal box beam (10) and the top plate (20) define a hollow cavity (30) used for accommodating a vehicle-mounted component. The present application meets the requirements of high efficiency and light weight of commercial vehicles.

Description

Frame body, box beam frame assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on June 30, 2023, with application number 202310803455.6, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The embodiments of the present application relate to, but are not limited to, the field of vehicle technology, and in particular relate to, but are not limited to, a frame body, a box beam frame assembly, and a vehicle. Background Art

[0004] Influenced by carbon neutrality policies and trends, commercial vehicles have increasingly higher requirements for fuel economy, which puts higher demands on the lightweighting of commercial vehicles. At present, one direction is to replace steel with aluminum and reduce the weight of the entire vehicle while meeting the strength requirements, so as to achieve lightweighting and meet fuel economy requirements.

[0005] Summary of the Invention

[0006] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0007] According to a first aspect of an embodiment of the present application, a frame body is provided, comprising a longitudinal box beam and a top plate; the longitudinal box beam and the top plate are extruded into a single-piece profile structure; the longitudinal box beam is connected to the lower surface of the top plate, and the longitudinal box beam and the top plate enclose a hollow cavity for accommodating vehicle-mounted components.

[0008] In some embodiments, the longitudinal box beam includes a bottom side beam and two side beams, one end of each side beam is connected to the bottom side beam, and the other end is connected to the top plate.

[0009] In some embodiments, the two side beams are symmetrically arranged on both sides of the bottom beam along the transverse direction; the transverse direction is perpendicular to the longitudinal direction of the hollow cavity.

[0010] In some embodiments, at least one section of the cross section of each side beam in the longitudinal direction is arc-shaped and concave toward the interior of the hollow cavity.

[0011] In some embodiments, the cross-section of the hollow cavity in the longitudinal direction is a quadrilateral, or the cross-section of the hollow cavity in the longitudinal direction is a trapezoid, and the length of the upper base of the trapezoid is greater than the length of the lower base of the cross-section.

[0012] In some embodiments, the upper top surface of the top plate is provided with a longitudinally extending protrusion, and the protrusion is provided with a mounting portion for mounting a cargo box or a cargo box side panel; and / or

[0013] The upper top surface of the top plate is provided with the longitudinally extending raised portion, and the longitudinal box beam, the top plate and the raised portion are an integrally formed structure formed by extrusion.

[0014] In some embodiments, along a transverse direction, the thickness of the top plate gradually decreases from the middle to both sides, and the transverse direction is perpendicular to the longitudinal direction of the hollow cavity.

[0015] In some embodiments, the longitudinal box beam and the top plate are both made of aluminum alloy.

[0016] In some embodiments, the longitudinal box beam and the top plate are solid structures;

[0017] Alternatively, the longitudinal box beam and the top plate are longitudinal hollow porous structures.

[0018] According to a second aspect of the embodiments of the present application, there is provided a box beam frame, comprising at least two frame bodies as described in the first aspect, horizontally connected along a transverse direction;

[0019] The top plates of the at least two frame bodies are connected as one body, or the at least two frame bodies are extruded into one piece and formed into a profile structure;

[0020] The longitudinal box beams of the at least two vehicle frame bodies are spaced apart along the transverse direction.

[0021] In some embodiments, a first receiving structure is provided at the bottom of the frame body, and the first receiving structure is suspended below the at least two longitudinal box beams. The two ends of the first receiving structure along the transverse direction are respectively connected to the top plate to form a first receiving cavity.

[0022] In some embodiments, at least two of the longitudinal box beams are each independently provided with a second receiving structure and a second accommodating cavity at the bottom, and both ends of the second receiving structure are respectively connected to the bottom of the top plate on both sides of the longitudinal box beam along the transverse direction.

[0023] In some embodiments, a third receiving structure is provided at the bottom of the frame body, and the two ends of the third receiving structure are respectively connected to the two side beams of the longitudinal box beams facing the middle of the top plate, and a third receiving cavity is formed between the third receiving structure, the side beams of the longitudinal box beam, and the top plate.

[0024] In some embodiments, a fourth receiving structure is provided at the bottom of the top plate, and the two ends of the fourth receiving structure are respectively connected to the side beams of the longitudinal box beam facing the edge of the top plate and the top plate, and a fourth receiving cavity is formed between the fourth receiving structure, the side beams of the longitudinal box beam facing the edge of the top plate, and the top plate.

[0025] In some embodiments, two fifth receiving structures and a fifth receiving cavity are symmetrically provided along the transverse cross section at the bottom of the top plate and are located beside the longitudinal box beam.

[0026] In some embodiments, a plurality of harness holes or pipe arrangement holes are provided in the interior of the top plate along the longitudinal direction.

[0027] According to a third aspect of the embodiments of the present application, there is provided a box beam frame, comprising at least three frame bodies as described in the first aspect;

[0028] The longitudinal box beams and top plates of at least three of the frame bodies are connected into one piece along the transverse direction, or at least three of the frame bodies are extruded into one piece and are profile-type structures.

[0029] In some embodiments, for each longitudinal box beam, the longitudinal box beam includes a bottom side beam and two side beams, one end of the side beam is connected to the bottom side beam, and the other end is connected to the top plate; two adjacent longitudinal box beams share one side beam;

[0030] wherein the two outermost side beams are symmetrically arranged; or

[0031] At least one of the side beams is arc-shaped and recessed toward the interior of the hollow cavity.

[0032] According to a fourth aspect of an embodiment of the present application, a box beam frame assembly is provided, wherein the frame assembly includes at least one frame body as described in the first aspect.

[0033] In some embodiments, the frame assembly further includes a cab support beam, wherein the cab support beam is longitudinally connected to the longitudinal box beam of the frame body.

[0034] In some embodiments, the cab support beam and the frame body are an integrally extruded profile structure, and the cab support beam is a structure in which the top plate and the longitudinal box beam of the front section of the frame assembly are partially removed.

[0035] In some embodiments, the cab support beam is an extruded one-piece structure and is connected to the longitudinal box beam via a connector.

[0036] According to a fifth aspect of an embodiment of the present application, a box beam frame assembly is provided, wherein the box beam frame assembly includes the box beam frame as described in the second aspect, wherein the box beam frame constitutes a load-bearing portion of the frame assembly, and a gooseneck is further provided at the front end of the load-bearing portion.

[0037] In some embodiments, the gooseneck is a one-piece extruded structure.

[0038] In some embodiments, the gooseneck is a steel structure, and the steel structure is connected to the bearing portion via a standard connector.

[0039] According to a sixth aspect of an embodiment of the present application, a box beam frame assembly is provided, wherein the box beam frame assembly includes a front section frame, a middle section frame, and a rear section frame; the middle section frame is composed of the box beam frame as described in the third aspect.

[0040] In some embodiments, the front section frame is a structure in which the top plate and part of the longitudinal box beam of the front section of the frame are partially removed;

[0041] The rear section frame is a structure in which the top plate and part of the longitudinal box beam of the rear section of the frame are partially removed.

[0042] In some embodiments, the front frame and the rear frame are made of steel, and the middle frame is made of aluminum alloy.

[0043] In some embodiments, the mid-section frame further includes a closing plate for closing the front end opening and the rear end opening.

[0044] According to a seventh aspect of an embodiment of the present application, a vehicle is provided, wherein the vehicle is a trailer or a semi-trailer, and the trailer or semi-trailer is provided with the frame assembly as described in the fifth aspect.

[0045] According to an eighth aspect of an embodiment of the present application, a vehicle is provided, which is a light truck. The light truck is provided with a frame assembly as described in the fourth aspect.

[0046] According to a ninth aspect of an embodiment of the present application, a vehicle is provided, which is a heavy truck provided with a frame assembly as described in the sixth aspect.

[0047] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0048] The frame body of the present application, by processing and forming the longitudinal box beam and the box beam top plate into a highly integrated one-piece structure, does not need to arrange a cross beam in the middle of the frame structure, thereby effectively reducing the weight of the frame.

[0049] The longitudinal box beam and the top plate enclose a hollow cavity for accommodating vehicle-borne components. By processing the longitudinal box beam and the box beam top plate into a highly integrated one-piece structure, the box beam top plate can be directly used as the bottom plate of the cargo box, and can also replace the function of the cross beam, effectively reducing the weight of the frame.

[0050] The top plate of the box beam can be directly used as the bottom plate of the cargo box, which reduces the difficulty of assembling the frame and the cargo box and simplifies the assembly.

[0051] The hollow cavity formed by the longitudinal box girder and the box girder top plate can be used to accommodate vehicle components such as power batteries, effectively utilizing the space of the frame structure.

[0052] In addition, the hollow cavity of the longitudinal box beam can be used to accommodate vehicle components such as power batteries. The longitudinal box beam has high strength and can effectively protect the power battery. There is no need to provide an additional protective shell for the power battery. The power battery can be effectively protected by the longitudinal box beam of the frame. Multiple components do not require redundant thickness design and mass redundancy, which greatly reduces the difficulty and design cost of lightweighting commercial vehicles.

[0053] By functionalizing the frame's box beam and integrating it with the cargo floor, it serves as both a cargo floor and a protective enclosure for components like batteries. This significantly reduces overall mass, meeting requirements for lightweighting and fuel economy, and providing a viable path to achieving carbon neutrality.

[0054] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and are not limiting of the present application. Other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0056] FIG1 is a perspective schematic diagram showing a first frame body according to an exemplary embodiment of the present application.

[0057] FIG2 is a front view of FIG1 .

[0058] 3 to 5 are front views of a first frame body according to other exemplary embodiments of the present application.

[0059] FIG6 is a front view of a second frame body according to an exemplary embodiment of the present application.

[0060] 7 to 12 are front views of a second frame body according to other exemplary embodiments of the present application.

[0061] FIG13 is a front view of a third frame body according to an exemplary embodiment of the present application.

[0062] 14 and 15 are front views of a third frame body according to other exemplary embodiments of the present application.

[0063] FIG16 is a schematic diagram showing a first box beam frame assembly according to an exemplary embodiment of the present application.

[0064] FIG17 is a schematic diagram showing a second box beam frame assembly according to an exemplary embodiment of the present application.

[0065] 18 and 19 are schematic diagrams showing a third box beam type frame assembly according to an exemplary embodiment of the present application.

[0066] 20 to 23 are schematic diagrams of a vehicle according to an exemplary embodiment of the present application.

[0067] Reference numerals: 10 - longitudinal box beam, 11 - bottom side beam, 12 - side beam, 20 - top plate, 21 - raised portion, 30 - hollow cavity, 41 - cargo box, 42-power unit, 43-cab, 45-wheel, 46-front and rear axles, 47-leaf spring suspension, 48-electronic control device layout box, 49-other device layout box, 50-cab support beam, 51-hollow sub-cavity, 611-wiring harness hole, 63-first accommodation structure, 631-first accommodation chamber, 70-second accommodation structure, 701-second accommodation chamber, 71-third accommodation structure, 711-third accommodation chamber, 72-fourth accommodation structure, 721-fourth accommodation chamber, 73-fifth accommodation structure, 731-fifth accommodation chamber, 81-front section frame, 82-middle section frame, 83-rear section frame, 84-front end opening, 85-rear end opening, 86-sealing plate, 87-connecting bracket, 91-bearing part, 92-gooseneck, 100-frame body, 200-vehicle, X-longitudinal direction, Y-transverse direction. DETAILED DESCRIPTION

[0068] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0069] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The words "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are simply used to distinguish different components. Similarly, words such as "a" or "an" do not indicate a quantitative limitation, but rather indicate the presence of at least one. "Multiple" or "several" means two or more. Unless otherwise indicated, words such as "front," "rear," "lower," and / or "upper," "top," and "bottom" are used for ease of description only and are not limited to a single position or spatial orientation. Words such as "include" or "comprises" mean that the elements or objects listed before "include" or "comprises" include the elements or objects listed after "include" or "comprises," and their equivalents, and do not exclude other elements or objects. The words “connected” or “connected” and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0070] As used in this application and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0071] The chassis frame used in commercial vehicles typically utilizes double-sided longitudinal beams, with multiple crossbeams welded or bolted between them. The numerous crossbeams within the frame structure waste space and increase the weight of the chassis frame. Furthermore, the connection between the frame and the cargo box is complex, requiring numerous parts and making assembly difficult.

[0072] In addition, commercial vehicle batteries or other components are installed on the outside of the frame. Since the equipment is exposed, in order to meet the thickness safety requirements, there is a certain redundancy in the design thickness. The accumulation of redundant thickness designs of multiple components makes it difficult to lightweight the entire commercial vehicle. Every kilogram of lightweighting requires a large design cost.

[0073] Aluminum extrusion technology is primarily used for small-section, long components, such as doors and windows. Through one-piece extrusion, component processing efficiency is greatly improved. While meeting strength requirements, the hollowing design significantly reduces component weight. Therefore, given the limited potential for lightweighting in existing chassis architectures, the development of a new commercial vehicle chassis architecture, combined with one-piece aluminum extrusion, can achieve the high efficiency, lightweight, and carbon neutrality requirements of commercial vehicles.

[0074] The present application provides a vehicle frame body, a box beam frame assembly, and a vehicle. The vehicle frame body, box beam frame assembly, and vehicle of the present application are described in detail below with reference to the accompanying drawings. The features of the following embodiments and implementations may be combined with each other unless they conflict.

[0075] 1 and 2 , according to the first aspect of the embodiment of the present application, a frame body 100 is provided, which can be applicable to automobile frames, ship frames, etc. For example, it can be applicable to commercial vehicles such as new energy vehicles or fuel vehicles, and commercial vehicles can include cargo vehicles, trucks, semi-trailer tractors, flatbed trailers, trucks, heavy trucks, light trucks and other vehicles. The frame body 100 may include: a longitudinal box beam 10 and a top plate 20, and the longitudinal box beam 10 and the top plate 20 are extruded integrally formed profile structures. The longitudinal box beam 10 is connected to the lower surface of the top plate 20, and the longitudinal box beam 10 and the top plate 20 enclose a hollow cavity 30 for accommodating vehicle-borne components. It can be understood that the longitudinal direction X of the longitudinal box beam 10, the top plate 20 and the hollow cavity 30 are all consistent with the length direction of the vehicle.

[0076] The vehicle frame body 100 of the present application is formed by extruding the longitudinal box beam 10 and the top plate 20 into a highly integrated, one-piece structure. This eliminates the need for a crossbeam in the middle of the frame structure, effectively reducing the weight of the frame and meeting the design requirements of the lightweight trend. The frame can be used directly without crossbeams or bolts, making installation faster and more efficient. The top plate 20 can be used directly as the bottom plate of the cargo box and can be directly assembled with the side panels of the cargo box, simplifying the assembly of the frame and cargo box. The hollow cavity 30 enclosed by the longitudinal box beam 10 and the top plate 20 can be used to accommodate components such as power batteries for new energy vehicles, effectively utilizing the space in the frame structure. It should be noted that the on-board components can include high-capacity power batteries, large-volume liquid fuel tanks, gas tanks, fuel tanks, batteries, engines, gearboxes, layout boxes for electronic control devices, layout boxes for other functional devices, and other devices, and this application does not impose any restrictions on this.

[0077] In some embodiments, the vehicle frame body 100 may further include an encapsulation plate that covers both ends of the hollow cavity 30 along the longitudinal direction X, thereby enclosing the hollow cavity 30. This allows components such as the power battery to be placed within the hollow cavity 30 and sealed by the encapsulation plate, thereby improving concealment and sealing. In some embodiments, the encapsulation plate may be an aluminum plate that is welded (e.g., tailor-welded) to the integrally formed structure formed by the longitudinal box beam 10 and the roof panel 20.

[0078] In some embodiments, the longitudinal box beam 10 and the top plate 20 are both made of aluminum alloy, and the longitudinal box beam 10 and the top plate 20 are extruded one-piece structures, that is, the aluminum alloy material is forcibly extruded through an extrusion molding process so that it is formed through a hole mold, so that the longitudinal box beam 10 and the top plate 20 form an one-piece structure, and the cross-section of the one-piece structure along the transverse direction Y perpendicular to the longitudinal direction X of the hollow cavity 30 is the same.

[0079] In this way, the longitudinal box beam 10 and the top plate 20 are formed into an integrally formed structure using an aluminum alloy extrusion molding process. The hollow cavity 30 formed by the extruded integral aluminum alloy wall and the welded aluminum plate has a large cavity space and can be used as a mounting shell for the battery cell of a power battery, or as a mounting shell for a fuel tank for liquid fuels such as methanol and gasoline. There is no need to connect the power battery box or fuel tank to the frame via an additional bracket, effectively avoiding the space waste caused by battery installation and fuel tank installation. It is equivalent to integrating the frame longitudinal beam, cargo box floor, battery pack or fuel tank into one. The inner wall of the hollow cavity 30 can serve as the outer shell of the vehicle's liquid fuel tank (or power battery box). In this way, the cargo box floor, frame beam, fuel tank or power battery box outer shell can be combined into one. Aluminum alloy materials have the advantages of being recyclable and reusable. The large-scale use and high integration of aluminum alloy materials, as well as the high integration of the frame, can effectively reduce the weight of the frame. At the same time, it can meet the requirements for arranging large-capacity power batteries and large-volume liquid fuel tanks, simplifying the installation of power batteries, liquid fuel tanks, and cargo boxes, reducing the difficulty of vehicle assembly, optimizing layout space, simplifying the production and assembly processes of parts such as the frame and cargo box, and reducing costs. This meets the needs of lightweight commercial vehicle frames, reducing market competitive costs, improving production efficiency, and achieving carbon neutrality.

[0080] In some embodiments, the longitudinal box beam 10 includes a bottom side beam 11 and two side beams 12, the bottom side beam 11 is located below the top plate 20, one end of each side beam 12 is connected to the bottom side beam 11, and the other end is connected to the top plate 20. In this way, the bottom side beam 11, the two side beams 12 and the top plate 20 enclose a hollow cavity 30. It is understood that the bottom side beam 11, the two side beams 12 and the top plate 20 are all made of aluminum alloy and are formed into an integrally formed structure through an extrusion process. In some embodiments, the two side beams 12 are symmetrically arranged on both sides of the bottom side beam 11 along the transverse direction Y, and the transverse direction Y is perpendicular to the longitudinal direction of the hollow cavity 30 (that is, the longitudinal direction X). In this way, the cross-section of the hollow cavity 30 in the longitudinal direction X is a quadrilateral, and the cross-section is perpendicular to the longitudinal direction of the hollow cavity 30, that is, perpendicular to the longitudinal direction X of the hollow cavity 30. It is understood that the quadrilateral structure has better stress resistance and higher structural strength, which can improve the overall strength of the frame. In some embodiments, the thickness of the side beams 12 is greater than the thickness of the bottom beam 11 , which can improve the load-bearing capacity of both sides of the longitudinal box beam 10 .

[0081] As shown in FIG3 , in some embodiments, the cross-section of the hollow cavity 30 along the longitudinal direction X can be trapezoidal. The two side beams 12 are symmetrically disposed on either side of the bottom beam 11 along the transverse direction Y. The upper base of the trapezoidal cross-section is longer than the lower base, giving the cross-section of the hollow cavity 30 an inverted trapezoidal shape. As will be appreciated, the inverted trapezoidal structure provides more uniform force on both sides, a greater load-bearing capacity on the upper surface, and higher structural strength, thereby improving the overall strength of the vehicle frame.

[0082] In some embodiments, as shown in FIG4 , at least one section of each side beam 12's cross-section in the longitudinal direction X is curved and recessed toward the interior of the hollow cavity 30. It will be appreciated that the curved side structure can evenly distribute force on both sides of the bottom beam 11, enhancing structural strength and improving the overall strength of the vehicle frame. Furthermore, the curved side structure facilitates extrusion processing and molding. In other embodiments, a combination of curved and straight lines may be employed.

[0083] As shown in Figure 5, in some embodiments, the upper top surface of the top plate 20 is provided with a raised portion 21 extending along the longitudinal direction X, and the raised portion 21 is provided with a mounting portion for mounting a cargo box or a cargo box side panel. In some embodiments, both sides of the upper top surface of the top plate 20 are provided with a raised portion 21 extending in the longitudinal direction X, that is, the two raised portions 21 are located on both sides of the upper surface of the top plate 20 along the transverse direction Y, and the transverse direction Y is perpendicular to the longitudinal direction X of the hollow cavity 30. It can be understood that the longitudinal box beam 10, the top plate 20 and the two raised portions 21 are all made of aluminum alloy and are formed into an integrally formed structure through an extrusion process. In this way, in the box beam frame assembly of the present application, the top plate 20 can be directly used as the bottom plate of the cargo box and can be directly assembled with the cargo box or the cargo box side panel through the raised portion 21, reducing the difficulty of assembling the frame and the cargo box and simplifying the assembly process. In some embodiments, the raised portion 21 is provided with a mounting portion for mounting a cargo box. For example, the mounting portion may be a screw hole, mounting groove, or other structure for mounting with the side panels of the cargo box. In this way, the cargo box can be directly mounted on the raised portions 21 on both sides of the upper surface of the top panel 20 and assembled with the top panel 20 by bolting or pushing the raised portions 21 into the container.

[0084] In some embodiments, along the longitudinal direction X of the hollow cavity 30, the length of the longitudinal box beam 10 is the same as the length of the top plate 20. In this way, the hollow cavity 30 is longer and has a larger space, and the space formed by the hollow cavity 30 can be used to place more components.

[0085] Along the transverse direction Y perpendicular to the longitudinal direction X of the hollow cavity 30, the width of the longitudinal box beam 10 is smaller than the width of the top plate 20. It can be understood that the width of the longitudinal box beam 10 is smaller than the width of the top plate 20 to leave space for installing wheels and reduce the weight of the frame.

[0086] Along the transverse direction Y, the longitudinal box beam 10 is located in the middle of the roof panel 20. This allows components such as the power battery to be placed within the hollow cavity 30 formed by the longitudinal box beam 10 and the roof panel 20. This allows the weight of the power battery to be maintained in the center of the vehicle, resulting in a more balanced and safer vehicle.

[0087] In some embodiments, along the transverse direction Y, the thickness of the top plate 20 gradually decreases from the middle to the two sides. In this way, the top plate 20 can form an isostress beam with a cross-section that is thick in the middle and thin at both ends, and has a large load-bearing capacity. In some embodiments, the bottom surface of the cross section of the top plate 20 in the longitudinal direction is arc-shaped (not shown) and is concave toward the interior of the hollow cavity 30, and the transverse direction Y is perpendicular to the longitudinal direction X of the hollow cavity 30. In this way, the top plate 20 can form an isostress beam with a cross-section that is thick in the middle and thin at both ends, and has a large load-bearing capacity. In other embodiments, the top plate 20 can also be provided with a plurality of reinforcing ribs to enhance the strength and rigidity of the cargo box top plate 20, as shown in FIG2 . FIG13 shows another arrangement of the reinforcing ribs. As shown in FIG13 , each longitudinal box beam 10 is provided with a plurality of intersecting longitudinal reinforcing ribs, so that the force on the longitudinal box beam 10 is more reasonable, the force strength is better, and more material is saved. The wall thickness of the longitudinal box beam 10, that is, the thickness of the side beam 12, can be set to a larger size to improve the load-bearing capacity. Reinforcing ribs can also be added to the longitudinal box beam 10 to serve as the main load-bearing component and installation base. This is more conducive to installing the vehicle's suspension bracket, cab suspension, other device brackets and other structures on both sides of the longitudinal box beam 10.

[0088] As shown in Figures 3 to 5, in some embodiments, the longitudinal box girder 10 and the top plate 20 are solid structures. Alternatively, as shown in Figures 1 to 2, the longitudinal box girder 10 and the top plate 20 are longitudinal hollow porous structures. In some embodiments, at least one of the longitudinal box girder 10 and the top plate 20 is a porous profile structure. It is understood that at least one of the longitudinal box girder 10 and the top plate 20 can be formed into a corrugated board-like structure by extrusion molding to strengthen and improve the strength and rigidity of the frame. The inner corner positions of at least one of the longitudinal box girder 10 and the top plate 20 can be formed into a cavity portion by extrusion molding. In this way, a small cavity portion is extruded out of the inner corner positions of the frame formed by extrusion of aluminum alloy, which can greatly enhance the bending resistance of the frame.

[0089] The inner wall of the hollow cavity 30 may be provided with a guide groove. It is understood that a groove may be provided on the inner wall of the longitudinal box beam 10 corresponding to the bottom wall of the hollow cavity 30. In this way, components such as the power battery can be pushed inwardly through the guide groove into the hollow cavity 30 for assembly, and then sealed in the hollow cavity 30 by the packaging plate.

[0090] The vehicle frame body of the present application can be formed into an integral structure by an extrusion molding process, with the longitudinal box beam 10 and the top plate 20 being located on the lower surface of the top plate 20. The longitudinal box beam 10 and the top plate 20 enclose a hollow cavity 30 for accommodating vehicle components. At least a portion of the inner wall of the hollow cavity 30 can serve as the outer shell of the vehicle's liquid fuel tank (or power battery box). In some embodiments, the longitudinal box beam 10 and the top plate 20 are both made of aluminum alloy. The longitudinal box beam 10 and the top plate 20 are an integrally formed structure formed by extrusion molding, that is, the aluminum alloy is strongly extruded through a die through a die through which the longitudinal box beam 10 and the top plate 20 are formed into an integrally formed structure.

[0091] This not only forms a highly integrated, one-piece frame, but also utilizes the frame space to form a hollow cavity 30 for accommodating the vehicle's onboard components. It will be appreciated that the cross-section of the one-piece frame formed by aluminum alloy extrusion in this application is primarily divided into two parts: a longitudinal box beam 10 at the lower end and a top plate 20 at the upper end. Depending on the size requirements of different equipment, the cross-section of the one-piece frame can be extruded as a single piece or extruded in separate sections, which can then be assembled into a single piece through connection methods such as snap-fitting, bonding, or riveting.

[0092] Referring to FIG. 6 , according to a second aspect of the embodiments of the present application, a box-beam frame is proposed, comprising at least two frame bodies 100 as described in the embodiments of the first aspect, wherein the at least two frame bodies 100 are horizontally connected along a transverse direction Y. The top plates 20 of the at least two frame bodies 100 are integrally connected. Alternatively, the at least two frame bodies 100 are extruded into a single-piece profile structure. The longitudinal box beams 10 of the at least two frame bodies 100 are spaced apart along the transverse direction. Thus, a double-box-beam frame body is formed, which is suitable for use with trailer vehicles and exhibits high structural strength.

[0093] As shown in Figure 7, in some embodiments, a first receiving structure 63 is provided at the bottom of the top plate 20 of the box beam type frame. The first receiving structure 63 is suspended below the longitudinal box beam 10. The two ends of the first receiving structure 63 along the transverse direction Y are respectively connected to the top plate 20 to form a first receiving cavity 631. It can be understood that the first receiving structure 63 is arranged below the two longitudinal box beams 10 and forms a first receiving cavity 631 between the first receiving structure 63 and the top plate 20. The first receiving cavity 631 can be used to install other functional modules of the vehicle. The first receiving structure 63 can be integrally formed with the longitudinal box beam 10 and the top plate 20, and then processed and cut for use later.

[0094] Among them, the first receiving structure 63 can also be an integrated extrusion molding structure, and then connected and installed with the frame body, so that too many subsequent assembly processes can be avoided, thereby simplifying the structure of the frame and shortening the production cycle of the frame. The cross-section of the first receiving cavity 631 can be rectangular, circular, rectangular with rounded corners, irregular structure and other shapes, and this application is not limited to this. The profile of the first receiving structure 63 itself can be a solid structure or have a cavity. The first receiving cavity 631 can be a cavity with an opening, and the opening of the first receiving cavity 631 toward the top plate 20 cooperates with the bottom surface of the top plate 20 to form a closed cavity.

[0095] As shown in Figure 8, in some embodiments, a second receiving structure 70 and a second receiving cavity 701 are separately provided at the bottom of at least two of the longitudinal box beams 10, and the two ends of the second receiving structure 70 are respectively connected to the bottom of the top plate 20 on both sides of the longitudinal box beam 10 along the transverse direction Y. It can be understood that a second receiving structure 70 is arranged below a longitudinal box beam 10 and forms a second receiving cavity 701 with the top plate 20. The second receiving cavity 701 can be used to install other functional modules of the vehicle. It should be noted that the structure and processing method of the second receiving structure 70 and the second receiving cavity 701 can be the same as those of the first receiving structure 63 and the first receiving cavity 631, and will not be repeated here.

[0096] As shown in FIG9 , in some embodiments, a third receiving structure 71 is provided at the bottom of the top plate 20 of the vehicle frame body. The third receiving structure 71 is located between the two longitudinal box beams 10. The two ends of the third receiving structure 71 are respectively connected to the side beams 12 of the two longitudinal box beams 10 toward the middle of the top plate 20. A third receiving cavity 711 is formed between the third receiving structure 71, the side beams 12 of the longitudinal box beam 10, and the top plate 20. The third receiving cavity 711 can be used to install other functional modules of the vehicle. It should be noted that the structure and processing method of the third receiving structure 71 and the third receiving cavity 711 can be the same as those of the first receiving structure 63 and the first receiving cavity 631, and will not be repeated here.

[0097] As shown in Figure 10, in some embodiments, a fourth receiving structure 72 is provided at the bottom of the top plate 20 of the vehicle frame body. The two ends of the fourth receiving structure 72 are respectively connected to the side beams 12 of the longitudinal box beam 10 facing the edge of the top plate 20 and the top plate 20. The fourth receiving structure 72, the side beams 12 of the longitudinal box beam 10 facing the edge of the top plate 20, and the top plate 20 form a fourth receiving cavity 721. The fourth receiving cavity 721 can be used to install other functional modules of the vehicle. It is understood that one end of the fourth receiving structure 72 is connected to the side beam 12 of the longitudinal box beam 10 located on the outside (towards the edge of the top plate 20), and the other end of the fourth receiving structure 72 is connected to the top plate 20, thereby enclosing the fourth receiving cavity 721. It should be noted that the structure and processing method of the fourth receiving structure 72 and the fourth receiving cavity 721 can be the same as the first receiving structure 63 and the first receiving cavity 631, and will not be repeated here.

[0098] As shown in Figure 11, in some embodiments, two fifth receiving structures 73 and a fifth receiving cavity 731 are symmetrically provided at the bottom of the top plate 20 of the frame body along the transverse direction, and are located on the side of the longitudinal box beam 10. It can be understood that the two fifth receiving structures 73 are symmetrically arranged at the bottom of the top plate 20 along the transverse direction Y, so that the forces on both sides of the frame are balanced, thereby improving the stability of the frame. One end of the fifth receiving structure 73 is connected to the side beam 12 located on the inner side (towards the center of the top plate 20) of the longitudinal box beam 10, and the other end of the fifth receiving structure 73 is connected to the top plate 20, thereby enclosing the fifth receiving cavity 731. It should be noted that the structure and processing method of the fifth receiving structure 73 and the fifth receiving structure 73 can be the same as those of the first receiving structure 63 and the first receiving cavity 631, and will not be repeated here.

[0099] As shown in FIG12 , in some embodiments, a plurality of wiring harness holes 611 are longitudinally provided in the top plate 20. The wiring harness holes 611 can be used to thread the wiring. The cross-sectional shape of the wiring harness holes 611 can be circular, rectangular, triangular, etc., and this application is not limited thereto.

[0100] Referring to FIG. 13 , according to the third aspect of the embodiment of the present application, a box beam type frame is proposed, comprising at least three frame bodies 100 as described in the embodiment of the first aspect above. The longitudinal box beams 10 and the top plate 20 of at least three of the frame bodies are connected as a whole along the transverse direction Y. Alternatively, at least three of the frame bodies are extruded integrally into a profile structure. In this way, a multi-box beam type frame body is formed, which can be applicable to vehicles such as trailers, semi-trailers, light trucks, and heavy trucks. It can be understood that the longitudinal box beams 10 of at least three of the frame bodies can form a hollow cavity 30 with the top plate 20.

[0101] 14 and 15 , the longitudinal box beam 10 includes a bottom side beam 11 and two side beams 12. One end of the side beam 12 is connected to the bottom side beam 11, and the other end is connected to the top plate 20. Two adjacent longitudinal box beams 10 share one side beam 12.

[0102] Among them, in at least three of the frame bodies, the two side beams 12 located on the outermost sides are symmetrically arranged, as shown in Figure 14. In this way, the overall shape formed by the cross section of the multiple hollow cavities 30 formed by the at least three frame bodies in the longitudinal direction X can be trapezoidal. For example, in this embodiment, the two side beams 12 located on the outermost sides are inclined relative to the top plate 20 and are symmetrically arranged with each other, so that the cross section of the overall shape formed by the multiple hollow cavities 30 is trapezoidal. In some embodiments, the length of the upper base of the trapezoid is greater than the length of the lower base, so that the cross section of the overall shape formed by the multiple hollow cavities 30 is an inverted trapezoid. The inverted trapezoidal structure has more uniform force on both sides, the upper surface has a stronger load-bearing capacity, and the structural strength is higher, thereby improving the overall strength of the chassis frame.

[0103] Alternatively, at least one side beam 12 of at least three of the frame bodies may be curved and recessed toward the interior of the hollow cavity 30, as shown in FIG15 . For example, the two outermost side beams 12 may have curved cross-sections in the longitudinal direction X. This curved side structure provides more uniform force distribution on both sides, resulting in higher structural strength, which can also improve the overall strength of the frame. Furthermore, the curved side structure facilitates extrusion processing and molding.

[0104] Referring to FIG. 16 , according to a fourth aspect of the present application, a box-beam frame assembly is provided, comprising at least one frame body as described in the embodiment of the first aspect. The frame assembly further comprises a cab support beam 50 connected to the longitudinal box beam 10 of the frame body along the longitudinal direction X. It will be appreciated that the cab support beam 50 may extend beyond the roof panel 20 to accommodate the vehicle cab.

[0105] In some embodiments, the cab support beam 50 and the frame body are an integrally extruded profile structure, and the cab support beam 50 is a structure in which the top plate 20 and part of the longitudinal box beam 10 of the front section of the frame assembly are partially removed. In some embodiments, the cab support beam 50 and the frame body are an integrally extruded profile structure, and the cab support beam 50 is made by partially removing the top plate 20 of the front section of the frame assembly. In some embodiments, the cab support beam 50 and the frame body are both made of aluminum alloy. In actual operation, the top plate 20 and the longitudinal box beam 10 can be extruded into an integral structure first, and then the area corresponding to the vehicle's cab (i.e., the front section of the frame assembly) on the top plate 20 and the longitudinal box beam 10 can be cut and removed to reserve space for installing the cab. The area at the front end of the frame assembly that is cut away exposes the portion that exceeds the top plate 20, thereby forming the cab support beam 50.

[0106] In other embodiments, the cab support beam 50 is an integrally formed extruded structure and is connected to the longitudinal box beam 10 via connectors. That is, the top plate 20 and the longitudinal box beam 10 are integrally extruded, and the cab support beam 50 is extruded separately. The cab support beam 50 and the longitudinal box beam 10 are then assembled into a single unit by means of clamping, bonding, riveting, or the like.

[0107] Referring to FIG. 17 , according to the fifth aspect of the embodiment of the present application, a box beam frame assembly is proposed, comprising the box beam frame described in the embodiment of the second aspect above, wherein the box beam frame constitutes a load-bearing portion 91 of the frame assembly, and a gooseneck 92 is further provided at the front end of the load-bearing portion 91. The box beam frame assembly of this embodiment can be applied to trailers. The load-bearing portion 91 can realize the cargo carrying function, and the gooseneck 92 can be used to realize assembly with vehicle components such as the front of the vehicle and the traction mechanism. Among them, the load-bearing portion 91 is composed of the box beam frame described in the embodiments of FIG. 6 to FIG. 12 , which is a profile-type extruded integrally formed structure, avoiding excessive subsequent assembly processes, thereby simplifying the frame assembly structure and shortening the production cycle of the frame assembly.

[0108] In the above embodiment, the gooseneck 92 can be an integrally extruded structure. This integrally extruded gooseneck 92 can avoid excessive subsequent assembly processes, thereby simplifying the structure of the frame assembly and shortening the production cycle of the frame assembly. It should be noted that the gooseneck 92 can also be connected to the load-bearing portion 91 through welding, riveting, clamping, or assembly with connectors. For example, the connector can be a threaded connector, with the end of the gooseneck 92 closest to the load-bearing portion 91 being secured to the load-bearing portion 91 via the threaded connector.

[0109] In the above embodiment, the gooseneck portion 92 may also be a steel structure, and the steel structure is connected to the bearing portion 91 via a standard connector.

[0110] 18 and 19 , according to a sixth aspect of the present invention, a box beam frame assembly is provided, comprising a front frame 81, a middle frame 82, and a rear frame 83. The middle frame 82 is formed by the box beam frame described in the third aspect of the present invention.

[0111] Referring to FIG. 20 , the front frame 81 is a structure obtained by partially removing the top plate 20 or the top plate 20 and a portion of the longitudinal box beam 10 of the front section of the frame body shown in FIG. 13 . The rear frame 83 is a structure obtained by partially removing the outer side beams and bottom beams of the two outer longitudinal box beams 10 of the rear section of the frame body shown in FIG. 13 , leaving only the top plate 20 and the middle side beams 12 and bottom beam 11. The middle frame 82 maintains the same shape as the frame body, and the hollow cavities 30 formed therein can be used to accommodate vehicle components such as the power unit 42, the electronic control device layout box 48, and the other device layout box 49. As an embodiment, it can be used in light trucks.

[0112] In one embodiment, the front frame 81 and the rear frame 83 are made of steel, while the middle frame 82 is made of an aluminum alloy. This allows the frame assembly to adapt to complex driving and transportation conditions. Furthermore, the middle frame 82 is extruded from an aluminum alloy, which helps reduce the weight of the frame assembly. In some embodiments, the front frame 81 and the rear frame 83 can each be cast or forged from steel, but are not limited thereto.

[0113] As shown in Figure 19 , the mid-section frame 82 may further include a sealing plate 86 for closing the front opening 84 and the rear opening 85. By providing the sealing plate 86 to seal the front opening 84 and the rear opening 85, the vehicle components can be better positioned and protected. In some embodiments, the sealing plate 86 is secured to the longitudinal box beam 10 and the top plate 20 of the mid-section frame 82 by welding or fasteners, but is not limited thereto.

[0114] In some embodiments, the middle frame 82 can be fixedly connected to the front frame 81 or the rear frame 83 via a connecting bracket 87. This allows for convenient and reliable connection of the front frame 81 and the rear frame 83 to the middle frame 82. In some embodiments, the longitudinal box beam 10 of the middle frame 82 is fixedly connected to the front frame 81 or the rear frame 83 via the connecting bracket 87. In another embodiment, the cover plate 86 of the middle frame 82 is fixedly connected to the front frame 81 or the rear frame 83 via the connecting bracket 87.

[0115] Referring to Figures 21 to 23, Figure 21 shows a side view of a vehicle according to an exemplary embodiment of the present application. Figure 22 shows a rear view of a vehicle according to an exemplary embodiment of the present application. Figure 23 shows a bottom view of a vehicle according to an exemplary embodiment of the present application. This embodiment of the present application also provides a vehicle, which may be a light truck and may be equipped with the box beam frame assembly described in the embodiment of the fourth aspect. Vehicle 200 may also include a cargo box 41 and a power unit 42. It will be understood that the longitudinal direction X of the hollow cavity 30 is aligned with the longitudinal direction of vehicle 200. The power unit 42 is mounted within the hollow cavity 30 of the frame assembly, and the cargo box 41 is mounted on the roof 20 and assembled to the roof 20 via the raised portion 21. In some embodiments, the power unit 42 may include at least one of a power battery and a fuel tank. In some embodiments, the power battery includes battery cells, and the inner wall of the hollow cavity 30 of the frame assembly surrounding the battery cells may serve as the outer shell of the power battery. It can be understood that the hollow cavity 30 formed by the longitudinal box beam 10 and the top plate 20 can serve as the outer shell of the vehicle's power battery box (or liquid fuel tank), thereby integrating the cargo box floor, frame beam, and battery outer shell into one, realizing a highly integrated frame structure with product engineering applications and structural multifunctionality.

[0116] The vehicle 200 of the present application has a frame assembly that forms a highly integrated one-piece structure by processing the longitudinal box beam 10 and the top plate 20. There is no need to arrange a crossbeam in the middle of the frame structure, which effectively reduces the weight of the frame and meets the design requirements of the lightweight trend. The frame can be used directly without crossbeams and bolts, and the installation is faster and more efficient. The top plate 20 can be used directly as the bottom plate of the cargo box and can be assembled with the side plates of the cargo box, which reduces the difficulty of assembling the frame and the cargo box and simplifies the assembly process. The hollow cavity 30 enclosed by the longitudinal box beam 10 and the top plate 20 can be used to accommodate components such as power batteries, effectively utilizing the space of the frame structure.

[0117] In some embodiments, the vehicle 200 may further include a driver's cabin 43, wheels 45, front and rear axles 46, leaf spring suspensions 47, an electronic control device arrangement box 48, and other device arrangement boxes 49. The driver's cabin 43 is mounted on a driver's cabin support beam 50 of the vehicle frame assembly. The front and rear axles 46 are connected to the longitudinal box beam 10 of the vehicle frame assembly via the leaf spring suspensions 47, and the wheels 45 are connected to the front and rear axles 46. The mounting bolts for larger load-bearing devices, such as the leaf spring suspensions 47, may be connected using a sleeve embedded structure or other methods. Conventional connecting bolts may be connected by slotting the inner wall of the longitudinal box beam 10 and welding nuts on the inner side of the outer wall, or by inserting nut plates on the inner side of the longitudinal box beam 10 for threaded connection.

[0118] Correspondingly, the cab support beam 50 can have a hollow sub-cavity 51, the electronic control device layout box 48 can be installed in the hollow sub-cavity 51, that is, the area corresponding to the front section of the vehicle (that is, corresponding to the cab 43), the power unit 42 can be installed in the area of ​​the hollow cavity 30 corresponding to the middle section of the vehicle, and the other device layout box 49 can be installed in the area of ​​the hollow cavity 30 corresponding to the rear section of the vehicle, thereby rationally utilizing the space of the frame.

[0119] It should be noted that the vehicle may also be a trailer or a semi-trailer, and may be provided with the box beam frame assembly described in the embodiment of the fifth aspect. The vehicle may also be a heavy truck, and may be provided with the box beam frame assembly described in the embodiment of the sixth aspect.

[0120] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0121] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A vehicle frame body, comprising a longitudinal box beam (10) and a top plate (20); The longitudinal box beam (10) and the top plate (20) are an integrally formed structure; The longitudinal box beam (10) is connected to the lower surface of the top plate (20), and the longitudinal box beam (10) and the top plate (20) enclose a hollow cavity (30) for accommodating vehicle-mounted components.

2. The frame body according to claim 1, wherein: The longitudinal box beam (10) comprises a bottom side beam (11) and two side beams (12), one end of each side beam (12) is connected to the bottom side beam (11), and the other end is connected to the top plate (20).

3. The frame body according to claim 2, wherein: The two side beams (12) are symmetrically arranged on both sides of the bottom beam (11) along a transverse direction (Y), and the transverse direction (Y) is perpendicular to the longitudinal direction (X) of the hollow cavity (30).

4. The frame body according to claim 3, wherein: At least one section of the cross section of each side beam (12) in the longitudinal direction (X) is arc-shaped and is concave toward the inside of the hollow cavity (30).

5. The frame body according to any one of claims 1 to 4, wherein: The cross section of the hollow cavity (30) in the longitudinal direction (X) is quadrilateral; or The cross section of the hollow cavity (30) in the longitudinal direction (X) is trapezoidal, and the length of the upper base of the trapezoid is greater than the length of the lower base of the cross section.

6. The frame body according to any one of claims 1 to 5, wherein: The upper surface of the top plate (20) is provided with a longitudinally extending protrusion (21), and the protrusion (21) is provided with a mounting portion for mounting a cargo box or a cargo box side panel; and / or The upper top surface of the top plate (20) is provided with a longitudinally extending protrusion (21); the longitudinal box beam (10), the top plate (20) and the protrusion (21) are an integrally formed structure formed by extrusion.

7. The frame body according to any one of claims 1 to 6, wherein: Along a transverse direction (Y), the thickness of the top plate (20) gradually decreases from the middle to both sides, and the transverse direction is perpendicular to the longitudinal direction (X) of the hollow cavity (30).

8. The frame body according to any one of claims 1 to 7, wherein: The longitudinal box beam (10) and the top plate (20) are both made of aluminum alloy.

9. The frame body according to any one of claims 1 to 8, wherein: The longitudinal box beam (10) and the top plate (20) are solid structures; Alternatively, the longitudinal box beam (10) and the top plate (20) are longitudinal hollow porous structures.

10. A box beam frame, comprising at least two frame bodies according to any one of claims 1 to 9 connected horizontally along a transverse direction (Y); The top plates (20) of the at least two frame bodies are connected as one body, or the at least two frame bodies It is an integrated structure; The longitudinal box beams (10) of the at least two frame bodies are arranged at intervals along the transverse direction (Y).

11. The box beam type frame according to claim 10, wherein: A first receiving structure (63) is provided at the bottom of the frame body. The first receiving structure (63) is suspended below the at least two longitudinal box beams (10), and the two ends of the first receiving structure (63) along the transverse direction (Y) are respectively connected to the top plate (20) to form a first receiving cavity (631).

12. The box beam type frame according to claim 10, wherein: A second receiving structure (70) and a second receiving cavity (701) are independently provided at the bottom of at least two of the longitudinal box beams (10). The two ends of the second receiving structure (70) are respectively connected to the bottom of the top plate (20) on both sides of the longitudinal box beam (10) along the transverse direction (Y).

13. The box beam type frame according to claim 10, wherein: A third receiving structure (71) is provided at the bottom of the frame body. The two ends of the third receiving structure (71) are respectively connected to the side beams (12) of the two longitudinal box beams (10) facing the middle of the top plate (20), and a third receiving chamber (711) is formed between the third receiving structure (71), the side beams (12) of the longitudinal box beam (10), and the top plate (20).

14. The box beam type frame according to claim 10, wherein: A fourth receiving structure (72) is provided at the bottom of the top plate (20). The two ends of the fourth receiving structure (72) are respectively connected to the side beams (12) of the longitudinal box beam (10) facing the edge of the top plate (20) and the top plate (20), A fourth accommodating chamber (721) is formed between the fourth accommodating structure (72), the side beams (12) of the longitudinal box beam (10) facing the edge of the top plate (20), and the top plate (20).

15. The box beam type frame according to claim 10, wherein: Two fifth receiving structures (73) and a fifth receiving cavity (731) are symmetrically arranged at the bottom of the top plate (20) along the transverse direction (Y), and are located beside the longitudinal box beam (10).

16. The box beam frame according to claim 10, wherein: The top plate (20) is provided with a plurality of harness holes (611) or pipeline arrangement holes in the longitudinal direction.

17. A box beam frame, comprising at least three frame bodies according to any one of claims 1 to 9; The longitudinal box beams (10) and the top plates (20) of at least three of the frame bodies are connected into one piece along the transverse direction (Y), or at least three of the frame bodies are an integrally formed structure.

18. The box beam type frame according to claim 17, wherein: For each longitudinal box beam (10), the longitudinal box beam (10) comprises a bottom side beam (11) and two side beams (12), one end of the side beam (12) is connected to the bottom side beam (11), and the other end is connected to the top plate (20); two adjacent longitudinal box beams (10) share one side beam (12); wherein the two side beams (12) located at the outermost sides are symmetrically arranged; or At least one of the side beams (12) is arc-shaped and recessed toward the interior of the hollow cavity (30).

19. A box beam frame assembly, wherein: The frame assembly comprises at least one frame body as described in any one of claims 1-9.

20. The box beam frame assembly according to claim 19, wherein: The vehicle frame assembly further comprises a cab support beam (50), wherein the cab support beam (50) is connected to a longitudinal box beam (10) of the vehicle frame body in the longitudinal direction.

21. The box beam frame assembly according to claim 20, wherein: The cab support beam (50) and the frame body are an integrally formed structure, and the cab support beam (50) is a structure in which a top plate (20) and a part of a longitudinal box beam (10) of a front section of the frame assembly are partially removed.

22. The box beam frame assembly according to claim 20, wherein: The cab support beam (50) is an integrally formed structure and is connected to the longitudinal box beam (10) via a connecting piece.

23. A box beam frame assembly, comprising the box beam frame according to any one of claims 10 to 16, wherein the box beam frame constitutes a load-bearing portion (91) of the frame assembly, and a goose neck (92) is further provided at the front end of the load-bearing portion (91).

24. The box beam frame assembly according to claim 23, wherein: The gooseneck (92) is an integral extrusion-molded structure.

25. The box beam frame assembly according to claim 23, wherein: The gooseneck (92) is a steel structure, and the steel structure is connected to the bearing part (91) via a standard connecting piece.

26. A box beam frame assembly, comprising a front frame, a middle frame and a rear frame; the middle frame is composed of the box beam frame according to any one of claims 17-18.

27. The vehicle frame assembly of claim 26, wherein: The front section vehicle frame is a structure in which a top plate (20) and a part of the longitudinal box beam (10) of the front section of the vehicle frame are partially removed; The rear section vehicle frame is a structure in which the outer side beams (12) and the bottom beam (11) of the two outer longitudinal box beams (10) are partially removed, and only the top plate (20) and the two side beams (12) and the bottom beam (11) located in the middle are retained.

28. The vehicle frame assembly of claim 26, wherein: The front section frame and the rear section frame are made of steel material, and the middle section frame is made of aluminum alloy material.

29. The vehicle frame assembly of claim 26, wherein: The middle section frame also includes a sealing plate for closing the front end opening and the rear end opening.

30. A vehicle, wherein: The vehicle is a light truck, and the light truck is provided with a frame assembly as described in any one of claims 19-22.

31. A vehicle, wherein: The vehicle is a trailer or a semi-trailer, and the trailer or the semi-trailer is provided with a frame assembly as described in any one of claims 23-25.

32. A vehicle, wherein: The vehicle is a heavy truck, and the heavy truck is provided with a frame assembly as described in any one of claims 26-29.

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