WO2025002344A1 - Box girder type vehicle frame body, vehicle frame assembly and vehicle - Google Patents

Abstract

A box girder type vehicle frame body, comprising: a cargo floor (20); a box girder plate (40), which is located below the cargo floor (20) and is arranged in parallel with the cargo floor (20); and longitudinal box girders (10), which are connected to and arranged between the cargo floor (20) and the box girder plate (40), wherein a plurality of hollow cavities (30) are formed by means of the enclosure of the longitudinal box girders (10), the cargo floor (20) and the box girder plate (40), and the hollow cavities (30) penetrate the vehicle frame body in a longitudinal direction. Further disclosed are a vehicle frame assembly and a vehicle. By means of the box girder type vehicle frame body, the weight of a vehicle frame is effectively reduced, the problems of a vehicle frame and a cargo body being difficult to assemble and being complex to assemble are solved, and the space of a vehicle frame structure is effectively utilized.

Description

Box beam type frame body, frame assembly and vehicle

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 202310800108.8 filed on June 30, 2023, the entire text of which is incorporated herein by reference.

Technical Field

The present application relates to but is not limited to the field of vehicle technology, and in particular to a box beam type frame body, a frame assembly and a vehicle.

Background Art

The chassis frame used in commercial vehicles usually adopts double-sided longitudinal beams, and multiple cross beams are assembled between the double-sided longitudinal beams by welding or bolting.

Summary of the invention

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.

The present application provides a box beam type frame body, a frame assembly and a vehicle.

According to a first aspect of an embodiment of the present application, a box beam type frame body is provided, wherein the frame body is an integrally formed profile structure; the frame body comprises: a cargo box floor; a box beam plate, located below the cargo box floor and arranged parallel to the cargo box floor; and a plurality of longitudinal box beams, connected and arranged between the cargo box floor and the box beam plate, wherein a plurality of hollow cavities are enclosed between the plurality of longitudinal box beams, the cargo box floor and the box beam plates, and the plurality of hollow cavities penetrate the frame body in the longitudinal direction.

Optionally, the number of the plurality of hollow cavities is at least three, and transverse cross sections of at least two of the hollow cavities are symmetrically arranged along a transverse direction, and the transverse direction is perpendicular to the longitudinal direction.

Optionally, the cargo box floor also includes connecting side beams, which protrude from the cargo box floor and are used to connect and fix the cargo box.

According to a second aspect of an embodiment of the present application, a frame assembly is provided, comprising a box beam frame body as described in the first aspect, wherein the front and rear ends of the frame body in the longitudinal direction are locally processed into different shapes.

Optionally, the front end of the frame body in the longitudinal direction is partially processed to remove the cargo box floor, the box beam plate and a portion of the longitudinal box beam close to the outer side of the front end.

Optionally, the rear end of the frame body in the longitudinal direction is partially processed to remove the box beam plate and a portion of the longitudinal box beam close to the outer side of the rear end.

According to a third aspect of an embodiment of the present application, a frame assembly is provided, which is formed by partially cutting the front section and the rear section of the box beam frame body as described in the first aspect; the frame assembly includes a middle section frame, which is composed of an uncut portion of the box beam frame body as described in the first aspect.

Optionally, the frame assembly further includes a front section frame, which is formed by removing a cargo box floor at the front section of the frame body and partially removing a box beam plate and a longitudinal box beam at the front section of the frame body.

Optionally, the frame assembly further includes a rear section frame, which is formed by partially removing the box beam plate and the longitudinal box beam of the rear section of the frame body.

According to a fourth aspect of an embodiment of the present application, a frame assembly is provided, comprising: a front section frame, which is an integrally formed profile structure and includes a front box beam; a middle section frame, which is a box beam type frame body as described in the first aspect; and a rear section frame, which is an integrally formed profile structure and includes a rear box beam, wherein the front section frame, the middle section frame and the rear section frame are fixedly connected in sequence along the longitudinal direction.

Optionally, the front box beam is connected to the longitudinal box beam in the middle section frame and the front end of the box beam plate in the longitudinal direction through a first connecting member.

Optionally, the rear box beam is connected to the longitudinal box beam in the middle section frame and the rear end of the box beam plate in the longitudinal direction through a second connecting member.

Optionally, the rear section frame also includes a sub-cargo box floor, and the sub-cargo box floor and the rear box beam are an integrally formed profile structure; the sub-cargo box floor is connected to the rear end of the cargo box floor in the middle section frame in the longitudinal direction through a third connecting member.

According to a fifth aspect of an embodiment of the present application, a vehicle is provided, comprising the frame assembly described in the second aspect, the third aspect or the fourth aspect.

The box beam type frame body of the present application is processed into an integral structure by processing the longitudinal box beam, box beam plate and cargo box bottom plate. The longitudinal box beam, box beam plate and cargo box bottom plate are highly integrated, and there is no need to arrange an independent cross beam in the middle of the frame structure, which effectively reduces the weight of the frame. The cargo box can be directly installed on the cargo box bottom plate, solving the problem of difficult and complex assembly of the frame and the cargo box. The hollow cavity can be used to accommodate vehicle components such as power batteries, effectively utilizing the vehicle Frame structure space.

It should be understood that the above general description and the following detailed description are exemplary and explanatory only and cannot limit the present application. Other aspects can be understood after reading and understanding the drawings and detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

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.

FIG. 1 is a perspective schematic diagram of a box beam type frame body according to an exemplary embodiment of the present application.

FIG. 2 is a front view of a box beam frame body according to an exemplary embodiment of the present application.

FIG. 3 and FIG. 4 are front views of a box beam frame body according to other exemplary embodiments of the present application.

FIG. 5 is a perspective schematic diagram of a vehicle frame assembly according to an exemplary embodiment of the present application.

FIG. 6 is a perspective schematic diagram of a vehicle frame assembly according to another exemplary embodiment of the present application.

FIG. 7 is a front view of the rear section frame of the frame assembly shown in FIG. 6 .

FIG. 8 is a side view of a vehicle according to an exemplary embodiment of the present application.

FIG. 9 is a rear view of a vehicle according to an exemplary embodiment of the present application.

FIG. 10 is a bottom view of a vehicle according to an exemplary embodiment of the present application.

FIG. 11 is another front view of the box beam type frame body shown in FIG. 1 .

DETAILED DESCRIPTION

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this application specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" 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", "bottom" and the like are for ease of description only and are not limited to one position or one spatial orientation. Words such as "include" or "comprises" and the like mean that the elements or objects appearing 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. Words such as "connected" or "connected" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

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.

As mentioned above, the chassis frame used in commercial vehicles usually adopts double-sided longitudinal beams, and multiple cross beams are assembled between the double-sided longitudinal beams by welding or bolting. Since multiple cross beams are arranged in the middle of the frame structure, the space in the middle of the frame structure is wasted, and the weight of the chassis frame is large. In addition, the connection between the frame and the cargo box has many parts and a complex structure, which makes it difficult to assemble.

In view of this, the present application provides a box beam type frame body, a frame assembly and a vehicle.

The box beam frame body, frame assembly and vehicle of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

Referring to Figures 1 to 2 and Figure 11, an embodiment of the present application provides a box beam frame body, which can be applied to vehicles such as automobiles and ships. For example, the frame body can be applied 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 (for example, heavy trucks, light trucks) and other vehicles. The box beam frame body is an integrally formed profile structure, which can include a plurality of longitudinal box beams 10, a box beam plate 40 and a cargo box bottom plate 20. The "integrally formed profile structure" here is a profile structure prepared using a process similar to the profile integral forming process. Among them, the box beam plate 40 is located below the cargo box bottom plate 20 and is arranged parallel to the cargo box bottom plate 20. The longitudinal box beam 10 is connected and arranged between the cargo box bottom plate 20 and the box beam plate 40. A plurality of hollow cavities 30 are enclosed and formed between the longitudinal box beam 10, the box beam plate 40 and the cargo box floor 20, and the plurality of hollow cavities 30 penetrate the frame body along the longitudinal direction of the vehicle for accommodating vehicle-borne components. In other words, a plurality of hollow cavities 30 for accommodating vehicle-borne components are defined between the longitudinal box beam 10, the box beam plate 40 and the cargo box floor 20, and the hollow cavities 30 are surrounded by the longitudinal box beam 10, the box beam plate 40 and the cargo box floor 20. Optionally, the plurality of hollow cavities 30 are arranged along the transverse direction Y of the vehicle, and the transverse direction Y of the vehicle is perpendicular to the length direction X of the hollow cavities 30. It can be understood that the longitudinal direction of the vehicle is the length direction of the vehicle. The length directions X of the longitudinal box beam 10, the cargo box floor 20 and the hollow cavities 30 are all perpendicular to the longitudinal direction Y of the vehicle. The length direction of the vehicle is consistent. The number of the hollow cavities 30 can be at least three.

The box beam frame body of the present application is processed into an integral structure by processing the longitudinal box beam 10, the box beam plate 40 and the cargo box bottom plate 20. The longitudinal box beam 10, the box beam plate 40 and the cargo box bottom plate 20 are highly integrated, and there is no need to arrange an independent cross beam in the middle of the frame structure, which effectively reduces the weight of the frame and meets the design requirements of lightweight frame. The frame can be directly used without cross beams and bolts, and the installation is faster and more efficient. The cargo box can be directly installed on the cargo box bottom plate 20, and the cargo box bottom plate 20 can be assembled with the side plate of the cargo box, which solves the problem of difficult and complex assembly of the frame and the cargo box. The hollow cavity 30 can be used to accommodate vehicle-mounted components such as power batteries, effectively utilizing the space of the frame structure. It should be noted that the vehicle-mounted components can be large-capacity power batteries, large-volume liquid fuel tanks, gas tanks, fuel tanks, batteries, engines, gearboxes, layout boxes of electronic control devices, layout boxes of other functional devices, etc., and this application does not limit this.

In some optional embodiments, the box beam frame body may further include a packaging plate, which is sealed at both longitudinal ends of the hollow cavity 30 to close the hollow cavity 30. In this way, the hollow cavity 30 in which the vehicle-mounted components such as the power battery are placed is sealed by the packaging plate, so that the concealment and sealing of the vehicle-mounted components can be improved. Optionally, the packaging plate is an aluminum plate, which is welded (for example, welded) to the one-piece structure formed by the longitudinal box beam 10, the box beam plate 40 and the cargo box bottom plate 20.

In some optional embodiments, the longitudinal box girder 10, the box girder plate 40 and the cargo box bottom plate 20 are all made of aluminum alloy, and the box girder plate 40, the longitudinal box girder 10 and the cargo box bottom plate 20 are an extruded one-piece structure, that is, the aluminum alloy material is strongly extruded through an extrusion molding process so that it is formed through a hole die, so that the longitudinal box girder 10, the box girder plate 40 and the cargo box bottom plate 20 are formed into an one-piece structure.

In this way, the longitudinal box beam 10, the box beam plate 40 and the cargo box bottom plate 20 are formed into an integrated structure by an aluminum alloy extrusion forming process. The cavity space of the hollow cavity formed by the extruded integrated aluminum alloy wall and the welded aluminum plate is large, which can be used as a battery cell of a power battery or a fuel tank installation shell of a liquid fuel such as methanol, which is equivalent to integrating the longitudinal box beam, the box beam plate, the cargo box bottom plate, the power battery or the liquid fuel tank into one, and there is no need to connect the power battery box body or the liquid fuel tank to the frame through an additional bracket, which effectively solves the problem of space waste caused by battery installation/fuel tank installation. The inner wall of the hollow cavity can be used as the shell of the liquid fuel tank or the power battery of the vehicle, so that the longitudinal box beam, the box beam plate, the cargo box bottom plate, the liquid fuel tank or the shell of the power battery are integrated into one. Aluminum alloy materials have the advantages of being recyclable and recyclable. The large-scale use and high integration of aluminum alloy materials, as well as the high integration of the frame, effectively reduce the weight of the frame. At the same time, it can meet the layout requirements of large-capacity power batteries and large-volume liquid fuel tanks, reduce the installation of power batteries or liquid fuel tanks and cargo boxes, solve the problem of complex vehicle assembly, optimize the layout space, simplify the production and assembly process of parts such as frames and cargo boxes, and reduce Cost. Furthermore, it can meet the needs of lightweight development of commercial vehicle frames, cost reduction in market competition, improvement of production efficiency, and carbon neutrality.

In some optional embodiments, the transverse cross-sections of at least two hollow cavities 30 are symmetrically arranged along the transverse direction Y of the vehicle, so that the forces on both sides of the frame can be balanced and the stability of the frame can be improved. Optionally, multiple longitudinal box beams 10 are symmetrically arranged along the transverse direction Y of the vehicle relative to the center line of the cargo box bottom plate 20, so that the transverse cross-sections of at least two hollow cavities 30 are symmetrically arranged along the transverse direction Y of the vehicle.

As shown in FIG. 2 , in some optional embodiments, the cargo box floor 20 also includes a connecting side beam 21, which protrudes from the cargo box floor 20 and is used to connect and fix the cargo box or the side plate of the cargo box. Optionally, there are two connecting side beams 21, which are arranged on both sides of the upper surface of the cargo box floor 20 along the vehicle transverse direction Y. It can be understood that the longitudinal box beam 10, the cargo box floor 20, the box beam plate 40 and the two connecting side beams 21 are all made of aluminum alloy and are formed into an integral structure through an extrusion molding process. In this way, the box beam type frame body of the present application, the cargo box can be directly installed on the cargo box floor 20, and can be directly assembled with the side plate of the cargo box by connecting the side beam 21, which solves the problem of difficult and complex assembly of the frame and the cargo box. Optionally, the connecting side beam 21 is provided with a mounting portion for mounting the cargo box. For example, the mounting portion can be a structure such as a screw hole, a mounting groove, etc. for mounting with the side plate of the cargo box. In this way, the cargo box can be directly installed on the connecting side beams on both sides of the upper surface of the base plate, and assembled with the base plate by bolt connection or push-in clamping.

In some optional embodiments, along the transverse direction Y of the vehicle perpendicular to the length direction X of the hollow cavity 30, the thickness of the cargo box floor 20 gradually decreases from the middle to both sides. The bottom edge of the cross section of the cargo box floor 20 perpendicular to the length direction X of the hollow cavity 30 is arc-shaped and recessed toward the inside of the hollow cavity 30. It can be understood that the cargo box floor 20 forms an equal stress beam with a cross section that is thick in the middle and thin at both ends, and has a large load-bearing capacity. Further, the cargo box floor 20 can also be provided with a plurality of reinforcing ribs to improve the strength and rigidity of the cargo box floor 20, as shown in Figure 2. Figure 11 shows another arrangement of the reinforcing ribs. As shown in Figure 11, each longitudinal box beam is provided with a plurality of intersecting longitudinal reinforcing ribs, so that the longitudinal box beam is more reasonably stressed, has better stress strength, and saves more materials. The wall thickness of the longitudinal box beam 10 can be set to a larger size to improve the load-bearing capacity. Reinforcing ribs may also be added to the longitudinal box beam 10 to serve as the main load-bearing component and mounting base. This is more conducive to installing the vehicle's suspension brackets, cab suspensions, other device brackets and other structures on both sides of the longitudinal box beam 10.

In some optional embodiments, at least one of the longitudinal box beam 10 and the cargo box bottom plate 20 is a porous profile structure. It is understood that at least one of the longitudinal box beam 10 and the cargo box bottom plate 20 can be formed into a corrugated board structure by extrusion molding to strengthen and improve the strength and rigidity of the frame. The inner corner position of at least one of the longitudinal box beam 10 and the cargo box bottom plate 20 can be formed into a cavity by extrusion molding. A small cavity is squeezed out at the corner position, which can greatly enhance the bending resistance of the frame.

The inner wall of the hollow cavity 30 may be provided with a guide groove. It is understandable that a groove may be provided on the inner wall of the box beam plate 40 corresponding to the bottom wall of the hollow cavity 30, so that components such as power batteries can be pushed into the hollow cavity as a whole through the guide groove for assembly, and then sealed by the packaging plate.

In some optional embodiments, the cross section of the hollow cavity 30 perpendicular to the length direction X may be a quadrilateral. It is understandable that the quadrilateral structure has better stress resistance and higher structural strength, and can improve the overall strength of the frame.

As shown in FIG3 , optionally, each longitudinal box beam 10 can be tilted relative to the cargo box floor 20, so that the overall shape of the cross section of at least one hollow cavity 30 perpendicular to the length direction X can be trapezoidal. For example, in this embodiment, the longitudinal box beams 10 located on the outermost sides are tilted relative to the cargo box floor 20 and symmetrically arranged with respect to each other, so that the overall shape of the cross section of the multiple hollow cavities 30 is trapezoidal. Optionally, the length of the upper base of the trapezoid is greater than the length of the lower base, so that the overall shape of the cross section of the multiple hollow cavities 30 is an inverted trapezoid. It can be understood that 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 frame.

Further, as shown in FIG4 , the cross section of the longitudinal box beam 10 may be arc-shaped. For example, in this embodiment, the cross sections of the longitudinal box beams 10 located on the outermost sides are arc-shaped and are recessed toward the inside of the hollow cavity 30. It can be understood that the forces on both sides of the structure of the arc-shaped side are more uniform, the structural strength is higher, and the overall strength of the frame can also be improved. In addition, the structure of the arc-shaped side is more convenient for extrusion processing.

As shown in FIG5 , the embodiment of the present application further proposes a frame assembly 100, which is formed by partially cutting the front section and the rear section of the box beam frame body described in the above embodiments and implementation methods. The frame assembly 100 includes a middle section frame 101, which is composed of the uncut part of the box beam frame body. It can be understood that the frame assembly 100 of this embodiment is obtained by partially cutting the box beam frame body.

Optionally, the frame assembly 100 further includes a front section frame 102, which is formed by removing the cargo box floor 20 at the front section of the frame body, and partially removing the box beam plate 40 and the longitudinal box beam 10 at the front section of the frame body. It can be understood that, based on the box beam type frame body, the portion of the cargo box floor 20 corresponding to the front section of the frame body is completely removed, the portions of the longitudinal box beam 10 and the box beam plate 40 corresponding to the front section of the frame body and located on both sides are removed, and the portions of the longitudinal box beam 10 and the box beam plate 40 corresponding to the front section of the frame body and located in the middle area are retained. The front section frame 102 can be used as a front box beam 50 for installing a cab, and the front box beam 50 can be understood to be composed of the longitudinal box beam 10 and the box beam plate 40 retained at the front section of the frame body. The front box beam 50 is formed with a first hollow cavity 51 for placing vehicle components. The first hollow cavity 51 can be understood as a longitudinal box beam 10 retained by the front section of the corresponding frame body. It is formed by enclosing the box beam plate 40.

The frame assembly 100 further includes a rear section frame 103, which is formed by partially removing the box beam plate 40 and the longitudinal box beam 10 at the rear section of the frame body. It can be understood that, based on the box beam type frame body, the longitudinal box beam 10 and the box beam plate 40 corresponding to the rear section of the frame body and located on both sides are cut off, and the longitudinal box beam 10 and the box beam plate 40 corresponding to the rear section of the frame body and located in the middle area are retained, and the cut-off portions of the longitudinal box beam 10 and the box beam plate 40 can be used to install wheels.

As shown in FIG6 , the embodiment of the present application further proposes a frame assembly 200, including a front frame 202, a middle frame 201, and a rear frame 203 connected in sequence. The front frame 202 is an integrally formed profile structure, and includes a front box beam 50. The middle frame 201 is composed of the box beam frame body described in the above embodiments and implementation methods. The rear frame 203 is an integrally formed profile structure, and includes a rear box beam 60. It can be understood that the frame assembly 200 of this embodiment is composed of a plurality of separately formed structures, which are assembled into a whole by connecting methods such as snap-on, bonding, and riveting.

Optionally, the front box beam 50 is connected to the front end of the longitudinal box beam 10 and the box beam plate 40 of the middle section frame 201 in the middle region through a connecting piece in the longitudinal direction. The rear box beam 60 is connected to the rear end of the longitudinal box beam 10 and the box beam plate 40 of the middle section frame 201 in the longitudinal direction through a connecting piece. In this way, the front box beam 50 can be used to install the cab, and a first hollow cavity 51 is formed on the front box beam 50, which can be used to place vehicle-mounted components. The first hollow cavity 51 can be connected to one of the hollow cavities 30 of the middle section frame 201. The areas on both sides of the rear box beam 60 can be used to install wheels.

Furthermore, the rear section frame 203 further includes a sub-cargo box bottom plate 70, and the sub-cargo box bottom plate 70 and the rear box beam 60 are an integrally formed profile structure. The sub-cargo box bottom plate 70 is connected to the rear end of the cargo box bottom plate 20 of the middle section frame 201 through a connecting piece in the longitudinal direction, thereby forming an integral body with the cargo box bottom plate 20. Optionally, the rear box beam 60 is located below the sub-cargo box bottom plate 70, and the rear box beam 60 and the sub-cargo box bottom plate 70 enclose a second hollow cavity 31, which can be used to place vehicle-mounted components.

As shown in FIG. 7 , in some optional embodiments, the rear box beam 60 includes a bottom side beam 61 and two side beams 62, and the two side beams 62 are respectively located on both sides of the bottom side beam 61 along the transverse direction Y. The bottom side beam 61 is located below the sub-cargo box bottom plate 70, and one end of the side beam 62 is connected to the bottom side beam 61, and the other end is connected to the sub-cargo box bottom plate 70. In this way, the bottom side beam 61, the two side beams 62 and the sub-cargo box bottom plate 70 are enclosed to form a second hollow cavity 31. It can be understood that the bottom side beam 61, the two side beams 62 and the sub-cargo box bottom plate 70 are all made of aluminum alloy and are formed into an integrally formed structure through an extrusion process. Optionally, the cross section of the second hollow cavity 31 perpendicular to the length direction X is a quadrilateral. It can be understood that the quadrilateral structure is better in stress and has a higher structural strength, which can improve the overall strength of the frame. Optionally, the thickness of the side beam 62 is greater than the thickness of the bottom beam 61 , which can improve the load-bearing capacity of both sides of the rear section frame 203 .

Optionally, the cross section of the second hollow cavity 31 perpendicular to the length direction X may be trapezoidal, and the two side beams 62 The second hollow cavity 31 is symmetrically arranged on both sides of the bottom side beam 61 along the transverse direction Y, and the length of the upper bottom side of the cross section is greater than the length of the lower bottom side of the cross section, so that the cross section of the second hollow cavity 31 is an inverted trapezoid. It can be understood that the forces on both sides of the inverted trapezoidal structure are more uniform, the load-bearing capacity of the upper surface is stronger, and the structural strength is higher, thereby improving the overall strength of the frame.

Furthermore, the cross-sections of the two side beams 62 perpendicular to the length direction X are arc-shaped and recessed toward the inside of the second hollow cavity 31. It can be understood that the arc-shaped side structure has more uniform force on both sides, higher structural strength, and can also improve the overall strength of the frame, and the arc-shaped side structure is more convenient for extrusion processing.

It is understandable that the main cross section of the frame assembly of the present application can be divided into two parts: the beam part at the lower end and the bottom plate part at the upper end. According to the requirements of different equipment sizes, the main cross section can be extruded as a whole and then obtained after a cutting process, as shown in the example of FIG5. The main cross section can also be extruded separately in several parts and then assembled into a whole by connecting methods such as clamping, bonding, riveting, etc., as shown in the example of FIG6.

Referring to FIG. 1 and FIG. 8 to FIG. 10, an embodiment of the present application provides a vehicle 400, which may include a frame assembly 100 or 200 as shown in FIG. 5 or FIG. 6. The vehicle 400 may also include a cab 43, a cargo box 41, and a power unit 42. It is understood that the length direction X of the hollow cavity 30 is consistent with the length direction of the vehicle 400. The power unit 42 is installed in the hollow cavity 30 of the frame assembly, the cargo box 41 is installed on the cargo box floor, and the cab 43 is installed on the front box beam 50 of the front section frame. Optionally, the power unit 42 may include at least one of a power battery and a fuel tank. Further, the power battery includes a battery cell, and the inner wall of the hollow cavity 30 surrounding the battery cell may serve as the outer shell of the power battery. It is understood that the hollow cavity may serve as the outer shell of the power battery (or liquid fuel tank) of the vehicle, so that the longitudinal box beam, the box beam plate, the cargo box floor, and the outer shell of the battery are integrated into one. The frame assembly does not need to arrange an independent crossbeam in the middle of the frame structure, which effectively reduces the weight of the frame and meets the design requirements of lightweight frame. The frame can be used directly without crossbeams and bolts, and the installation is faster and more efficient. The cargo box can be directly installed on the cargo box floor, and the cargo box floor and the side panels of the cargo box can be assembled, which solves the problem of difficult and complex assembly of the frame and the cargo box. The hollow cavity 30 can be used to accommodate vehicle-mounted components such as power batteries, effectively utilizing the space of the frame structure.

In some optional embodiments, the vehicle 400 may further include wheels 45, front and rear axles 46, leaf spring suspensions 47, electronic control device arrangement boxes 48, other device arrangement boxes 49, etc. Among them, the front and rear axles 46 are connected to the longitudinal box beam 10 of the frame assembly through the leaf spring suspensions 47, and the wheels 45 are connected to the front and rear axles 46. The mounting bolts of the leaf spring suspensions 47 and other large load-bearing devices can be connected by means of a sleeve embedded structure or the like. Ordinary connecting bolts can be connected by slotting the inner wall of the longitudinal box beam 10 and welding nuts on the outer wall, or by inserting nut plates on the inner side of the longitudinal box beam 10 for screw connection.

The electronic control device arrangement box 48 can be installed in the first hollow cavity 51 of the front box beam 50 of the front frame, corresponding to the area of the front section of the vehicle (that is, corresponding to the cab 43). The power device 42 can be installed in the hollow cavity of the middle frame. In the body, other device arrangement boxes 49 can be installed in the hollow cavity of the rear frame, which reasonably utilizes the space of the frame.

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

It should be understood that the present application is not limited to the precise structures that have been 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 (11)

A box beam type frame body, the frame body is an integrally formed profile structure; the frame body comprises: Cargo box floor; A box beam plate, located below the cargo box bottom plate and arranged parallel to the cargo box bottom plate; and A plurality of longitudinal box beams are connected and arranged between the cargo box bottom plate and the box beam plate, Among them, the multiple longitudinal box beams, the cargo box bottom plate, and the box beam plates enclose a plurality of hollow cavities, and the multiple hollow cavities penetrate the frame body along the longitudinal direction. The box beam frame body as described in claim 1, wherein the number of the plurality of hollow cavities is at least three, and the transverse cross-sections of at least two of the hollow cavities are symmetrically arranged along a transverse direction, and the transverse direction is perpendicular to the longitudinal direction. The box beam type frame body as described in claim 2, wherein the cargo box floor also includes a connecting side beam, and the connecting side beam protrudes from the cargo box floor and is used to connect and fix the cargo box. A vehicle frame assembly comprises a box beam type frame body as claimed in any one of claims 1 to 3, wherein the front end and the rear end of the frame body in the longitudinal direction are locally processed into different shapes. The vehicle frame assembly as claimed in claim 4, wherein the front end of the vehicle frame body in the longitudinal direction is partially processed to remove the cargo box floor, the box beam plate and a portion of the longitudinal box beam close to the outer side of the front end. The vehicle frame assembly according to claim 4 or 5, wherein a rear end of the vehicle frame body in the longitudinal direction is partially processed to remove the box beam plate and a portion of the longitudinal box beam close to the outer side of the rear end. A vehicle frame assembly, comprising: The front frame is an integrally formed profile structure and includes a front box beam; The middle section frame is a box beam frame body as claimed in any one of claims 1 to 3; The rear frame is an integrated profile structure and includes a rear box beam. Wherein, the front section frame, the middle section frame and the rear section frame are fixedly connected in sequence along the longitudinal direction. The frame assembly as claimed in claim 7, wherein the front box beam is connected to the longitudinal box beam in the middle frame and the front end of the box beam plate in the longitudinal direction through a first connecting member. The frame assembly as claimed in claim 7 or 8, wherein the rear box beam is connected to the longitudinal box beam in the middle frame and the rear end of the box beam plate in the longitudinal direction through a second connecting member. The frame assembly according to any one of claims 7 to 9, wherein the rear frame further comprises a sub-cargo box floor, and the sub-cargo box floor and the rear box beam are an integrally formed profile structure; The sub-cargo box bottom plate is connected to the cargo box bottom plate in the middle section frame in the longitudinal direction through a third connecting piece. Connected to the rear end upward. A vehicle comprises the frame assembly according to any one of claims 4 to 10.