Vehicle body frame structure and vehicle

Abstract

The embodiment of the invention provides a vehicle body frame structure and a vehicle. The vehicle body frame structure comprises a longitudinal beam main body part, the longitudinal beam main body part is connected with the longitudinal beam connecting part; in the width direction of the vehicle, the second end of the longitudinal beam outer connecting part and the second end of the longitudinal beam inner connecting part are arranged at an interval, so that the longitudinal beam outer connecting part, the longitudinal beam inner connecting part and the longitudinal beam main body part form a Y-shaped structure; the longitudinal beam outer connecting part and the longitudinal beam inner connecting part can disperse the stress of the longitudinal beam main body part, so that the collision strength of the vehicle body frame structure is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle body structures, and specifically, relates to a vehicle body frame structure and a vehicle. Background Art

[0002] In the prior art, the force transmission structures at the front and rear sides of the vehicle passenger compartment are relatively weak and cannot transmit force to the passenger compartment well, thereby reducing the collision strength of the vehicle body structure and affecting the driving safety of the vehicle. Summary of the invention

[0003] An object of an embodiment of the present application is to provide a new technical solution for a body frame structure and a vehicle.

[0004] According to a first aspect of an embodiment of the present application, a vehicle body frame structure is provided, comprising:

[0005] The main body of the longitudinal beam;

[0006] A longitudinal beam connecting portion, the longitudinal beam main body portion being connected to the longitudinal beam connecting portion;

[0007] The longitudinal beam connection portion includes a longitudinal beam outer connection portion and a longitudinal beam inner connection portion, and the first end of the longitudinal beam outer connection portion and the first end of the longitudinal beam inner connection portion are both connected to the first end of the longitudinal beam main body portion;

[0008] In the vehicle width direction, the second end of the longitudinal beam outer connection portion is spaced apart from the second end of the longitudinal beam inner connection portion, so that the longitudinal beam outer connection portion, the longitudinal beam inner connection portion and the longitudinal beam main body form a Y-shaped structure.

[0009] Optionally, a longitudinal beam front joint is further included, and the first end of the longitudinal beam outer connection portion and the first end of the longitudinal beam inner connection portion are both connected to the first end of the longitudinal beam main body portion through the longitudinal beam front joint.

[0010] Optionally, the front joint of the longitudinal beam includes a main joint portion, an external joint portion and an internal joint portion, the main joint portion is suitable for connecting to the first end of the main portion of the longitudinal beam, the external joint portion is suitable for connecting to the first end of the external connection portion of the longitudinal beam, and the internal joint portion is suitable for connecting to the first end of the internal connection portion of the longitudinal beam.

[0011] Optionally, it further comprises a front mounting seat and a rear mounting seat, wherein the front mounting seat is connected to the outer connecting portion of the longitudinal beam, and the rear mounting seat is connected to the main body of the longitudinal beam;

[0012] The front mounting seat and the rear mounting seat are used to connect the subframe.

[0013] Optionally, the rear mounting seat has a first connecting surface and a second connecting surface, wherein the first connecting surface is connected to a side of the longitudinal beam body away from the passenger compartment in the vehicle width direction, and the second connecting surface is connected to a bottom surface of the longitudinal beam body in the vehicle height direction.

[0014] Optionally, a mounting sleeve is further included, wherein the mounting sleeve is suitable for being connected to the sub-frame, a mounting hole is provided on the rear mounting seat, and the mounting sleeve is arranged in the mounting hole and fixed in the rear mounting seat.

[0015] Optionally, in the vehicle width direction, the mounting sleeve is arranged on a side of the longitudinal beam main body away from the passenger compartment.

[0016] Optionally, the frame further comprises a first cross beam, the longitudinal beam main body comprises a left longitudinal beam and a right longitudinal beam spaced apart in the vehicle width direction, and the rear mounting seat comprises a left rear mounting seat and a right rear mounting seat;

[0017] The two ends of the first cross beam of the frame are respectively connected to the left longitudinal beam and the right longitudinal beam, and the two ends of the first cross beam of the frame are respectively connected to the left rear mounting seat and the right rear mounting seat.

[0018] Optionally, the frame further comprises a second cross beam, the longitudinal beam front joint comprises a longitudinal beam left front joint and a longitudinal beam right front joint, and two ends of the second cross beam of the frame are respectively connected to the longitudinal beam left front joint and the longitudinal beam right front joint;

[0019] The longitudinal beam main body includes a left longitudinal beam main body and a right longitudinal beam main body, the longitudinal beam left front joint is connected to the first end of the left longitudinal beam main body, and the longitudinal beam right front joint is connected to the first end of the right longitudinal beam main body.

[0020] Optionally, it further comprises a passenger compartment connecting plate, wherein a cavity is arranged in the passenger compartment connecting plate, and the passenger compartment connecting plate is connected to the second end of the outer connecting portion of the longitudinal beam and the second end of the inner connecting portion of the longitudinal beam;

[0021] The projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the outer connection part of the longitudinal beam in the front-rear direction of the vehicle, and the projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the inner connection part of the longitudinal beam in the front-rear direction of the vehicle.

[0022] Optionally, a reinforcement member is provided in the cavity, and the second end of the outer connecting portion of the longitudinal beam and the second end of the inner connecting portion of the longitudinal beam are both connected to the reinforcement member.

[0023] Optionally, it further comprises a longitudinal beam outer connection portion mounting plate, wherein the longitudinal beam outer connection portion is connected to the passenger compartment connection plate through the longitudinal beam outer connection portion mounting plate;

[0024] and / or;

[0025] It also includes a longitudinal beam inner connection portion mounting plate, and the longitudinal beam inner connection portion is connected to the passenger compartment connecting plate through the longitudinal beam inner connection portion mounting plate.

[0026] Optionally, in the vehicle width direction, two first reinforcing ribs are spaced apart on the mounting plate of the longitudinal beam outer connecting portion, and the longitudinal beam outer connecting portion is arranged between the two first reinforcing ribs;

[0027] and / or;

[0028] Two second reinforcing ribs are arranged at intervals on the mounting plate of the inner connecting portion of the longitudinal beam, and the inner connecting portion of the longitudinal beam is arranged between the two second reinforcing ribs.

[0029] Optionally, the cavity is further provided with an external connection block, and the longitudinal beam external connection portion is connected to the external connection block via the longitudinal beam external connection portion mounting plate;

[0030] and / or;

[0031] A middle connecting block is also arranged in the cavity, and the inner connecting part of the longitudinal beam is connected to the middle connecting block through an inner connecting part mounting plate of the longitudinal beam.

[0032] Optionally, it further comprises a threshold beam and a threshold connecting block, wherein the threshold connecting block is fixed on the threshold beam;

[0033] The outer connection block is connected to the threshold connection block.

[0034] Optionally, in the vehicle width direction, the door sill connecting block is arranged on a side of the outer connecting block away from the middle connecting block.

[0035] Optionally, the passenger compartment connecting plate has a connecting plate main body and side plates connected to each other, and the external connecting blocks are respectively connected to the connecting plate main body and the side plates.

[0036] Optionally, the longitudinal beam outer connection portion, the longitudinal beam inner connection portion and the longitudinal beam front joint are integrally formed.

[0037] Optionally, the front mounting seat, the longitudinal beam outer connecting portion, the longitudinal beam inner connecting portion and the longitudinal beam front joint are integrally formed.

[0038] Optionally, an anti-collision beam assembly is further included, wherein the anti-collision beam assembly includes an anti-collision beam and an energy absorption box;

[0039] The energy absorption box is arranged between the anti-collision beam and the longitudinal beam main body, and a first end of the energy absorption box is connected to the anti-collision beam, and a second end of the energy absorption box is connected to a second end of the longitudinal beam main body.

[0040] Optionally, it also includes an energy absorption box connection part, which is provided with an installation cavity, the second end of the longitudinal beam main body is arranged in the installation cavity and connected to the energy absorption box connection part, and the second end of the energy absorption box is arranged in the installation cavity and connected to the energy absorption box connection part.

[0041] Optionally, the longitudinal beam outer connection portion and the longitudinal beam inner connection portion are arranged at intervals in the vehicle width direction.

[0042] Optionally, the longitudinal beam main body is a rear longitudinal beam, and the passenger compartment connecting plate is a rear panel.

[0043] According to a second aspect of an embodiment of the present application, a vehicle is provided, the vehicle comprising the vehicle body frame structure described in the first aspect.

[0044] A technical effect of this application is:

[0045] An embodiment of the present application provides a vehicle body frame structure, which includes a longitudinal beam main body; a longitudinal beam connecting portion, wherein the longitudinal beam main body is connected to the longitudinal beam connecting portion; in the vehicle width direction, the second end of the longitudinal beam outer connecting portion and the second end of the longitudinal beam inner connecting portion are spaced apart so that the longitudinal beam outer connecting portion, the longitudinal beam inner connecting portion and the longitudinal beam main body form a Y-shaped structure, and the longitudinal beam outer connecting portion and the longitudinal beam inner connecting portion can disperse the force of the longitudinal beam main body, thereby improving the collision strength of the vehicle body frame structure.

[0046] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0048] Figure 1 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 1 ;

[0049] Figure 2 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 2 ;

[0050] Figure 3 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 3 ;

[0051] Figure 4 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 4 ;

[0052] Figure 5 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 5 ;

[0053] Figure 6 A schematic diagram of the cooperation between the outer connecting portion of the longitudinal beam and the front mounting seat of a vehicle body frame structure provided in an embodiment of the present application;

[0054] Figure 7 A partial cross section of a vehicle body frame structure provided in an embodiment of the present application Figure 1 ;

[0055] Figure 8 A partial cross section of a vehicle body frame structure provided in an embodiment of the present application Figure 2 ;

[0056] Fig. 9 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 6 ;

[0057] Fig.10 A schematic diagram of a force transmission structure of a vehicle body frame provided in an embodiment of the present application Figure 1 ;

[0058] Fig.11 A schematic diagram of a force transmission structure of a vehicle body frame provided in an embodiment of the present application Figure 2 ;

[0059] Fig.12 A partial cross section of a vehicle body frame structure provided in an embodiment of the present application Figure 3 ;

[0060] Fig.13 A partial cross section of a vehicle body frame structure provided in an embodiment of the present application Figure 4 ;

[0061] Fig.14 A schematic diagram of a force transmission structure of a vehicle body frame provided in an embodiment of the present application Figure 3 ;

[0062] Fig.15 A partial schematic diagram of a vehicle body frame structure provided in an embodiment of the present application Figure 7 .

[0063] in:

[0064] 211, floor; 230, rear enclosure assembly; 231, passenger compartment connecting plate; 232, reinforcement; 233, outer connecting block; 233a, first bolt hole; 233b, second bolt hole; 234, middle connecting block; 234a, third bolt hole; 244, door sill beam; 249, door sill connecting block; 249a, connecting bolt; 400, V-shaped frame structure; 411, longitudinal beam main body; 412, longitudinal beam front joint; 413, energy absorption box connecting part; 413a, bolt sleeve; 414, longitudinal beam outer connecting part; 415, front mounting seat; 415a , wire thread sleeve; 416, mounting plate of outer connection part of longitudinal beam; 416a, fourth connection surface; 416b, third bolt; 417, inner connection part of longitudinal beam; 418, mounting plate of inner connection part of longitudinal beam; 418a, third connection surface; 418b, first bolt; 420, anti-collision beam assembly; 421, anti-collision beam; 422, energy absorption box; 462, second cross beam of frame; 464, first cross beam of frame; 465,; 466, rear mounting seat; 466a, mounting sleeve; 466b, first connection surface; 466c, second connection surface; 466d, second bolt. DETAILED DESCRIPTION

[0065] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0066] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0067] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0071] Reference Figure 1 and Figure 2 , an embodiment of the present application provides a vehicle body frame structure, the vehicle body frame structure comprising:

[0072] A longitudinal beam main body 411, which may be a rear longitudinal beam or a front longitudinal beam;

[0073] In one embodiment, it also includes an anti-collision beam assembly 420, the longitudinal beam main body 411 is a rear longitudinal beam, and the anti-collision beam assembly 420 is connected to the rear end of the longitudinal beam main body 411. When the anti-collision beam assembly 420 is impacted by the rear of the vehicle, it can transfer the impact energy to the longitudinal beam main body 411 to facilitate the transmission of the impact force of the vehicle body frame structure.

[0074] A longitudinal beam connection portion, the longitudinal beam main body portion 411 is connected to the longitudinal beam connection portion; in an embodiment, the longitudinal beam main body portion 411 is a rear longitudinal beam, and in the front-rear direction of the vehicle, the longitudinal beam connection portion is arranged on the front side of the longitudinal beam main body portion.

[0075] The longitudinal beam connection portion includes an outer longitudinal beam connection portion 414 and an inner longitudinal beam connection portion 417, and the first end of the outer longitudinal beam connection portion and the first end of the inner longitudinal beam connection portion are both connected to the first end of the longitudinal beam main body portion. Specifically, the first end of the outer longitudinal beam connection portion is connected to the first end of the longitudinal beam main body portion, and the first end of the inner longitudinal beam connection portion is connected to the first end of the longitudinal beam main body portion; and the connection between the first end of the outer longitudinal beam connection portion, the first end of the inner longitudinal beam connection portion and the first end of the longitudinal beam main body portion can be a direct connection or an indirect connection achieved through a connecting member.

[0076] Specifically, the longitudinal beam outer connection portion 414 and the longitudinal beam inner connection portion 417 may be connected obliquely to the front end of the longitudinal beam main body portion 411 to form an angle.

[0077] The second end of the longitudinal beam outer connection portion is spaced apart from the second end of the longitudinal beam inner connection portion, so that the longitudinal beam outer connection portion 414 , the longitudinal beam inner connection portion 417 and the longitudinal beam main body portion 411 form a Y-shaped structure.

[0078] Specifically, the vehicle to which the body frame structure is applied has a length direction, a width direction and a height direction. Specifically, the length direction of the vehicle can be the X direction in the figure, that is, the front and rear direction of the vehicle, the width direction of the vehicle can be the Y direction in the figure, that is, the left and right direction of the vehicle, and the height direction of the vehicle can be the Z direction in the figure, that is, the up and down direction of the vehicle.

[0079] Specifically, when the longitudinal beam outer connection portion 414 and the longitudinal beam inner connection portion 417 are obliquely connected to the front end of the longitudinal beam main body portion 411 and form an angle, the longitudinal beam outer connection portion 414 and the longitudinal beam inner connection portion 417 can disperse the force of the longitudinal beam main body portion 411; and because the longitudinal beam main body portion 411 is connected to the passenger compartment through the longitudinal beam connection portion, the V-shaped strut structure of the longitudinal beam outer connection portion 414 and the longitudinal beam inner connection portion 417 can reduce the local force of the passenger compartment, thereby preventing the passenger compartment from deforming.

[0080] See also Figure 1 When the anti-collision beam assembly 420 is subjected to the impact force F from the rear of the vehicle, the force transmission path of the impact force F is as follows: Figure 1 As shown by the middle arrow, two force transmission paths are generated. One path is transmitted to the door sill of the vehicle through the longitudinal beam main body 411 and the longitudinal beam outer connection part 414, and the other path is transmitted to the rear cross beam cavity through the longitudinal beam main body 411 and the longitudinal beam inner connection part 417, so as to reduce the local force on the passenger compartment, thereby preventing the passenger compartment from causing large deformation, so as to ensure the installation function requirements of the vehicle body frame structure while meeting the energy absorption and force transmission performance of the vehicle during rear collision.

[0081] Furthermore, according to the characteristics of the electric sports car to which the body frame structure is applied, the present application improves the force transmission path during a rear-end collision of the vehicle, as there is no influence of chassis parts and no limitation of trunk space. Specifically, force is transmitted to the door sill through the outer connection portion 414 of the longitudinal beam, and force is transmitted to the rear cross beam cavity of the cockpit through the inner connection portion 417 of the longitudinal beam, so as to reduce the maximum force on the door sill of the passenger compartment, thereby preventing the passenger compartment from being deformed significantly, protecting the structure of the passenger compartment, and ensuring the driving safety of the vehicle.

[0082] An embodiment of the present application provides a vehicle body frame structure, which includes a longitudinal beam main body 411; a longitudinal beam connecting part, wherein the longitudinal beam connecting part includes a longitudinal beam outer connecting part 414 and a longitudinal beam inner connecting part 417, the longitudinal beam outer connecting part 414 and the longitudinal beam inner connecting part 417 are connected to the longitudinal beam main body 411 so that the longitudinal beam outer connecting part 414, the longitudinal beam inner connecting part 417 and the longitudinal beam main body 411 form a Y-shaped structure, the longitudinal beam outer connecting part 414 and the longitudinal beam inner connecting part 417 can disperse the force of the longitudinal beam main body 411 to reduce the local force of the passenger compartment, thereby improving the collision strength of the vehicle body frame structure.

[0083] Alternatively, see Figure 1 and Figure 2 The vehicle body frame structure further includes a longitudinal beam front joint 412 , and the first end of the longitudinal beam outer connection portion 414 and the first end of the longitudinal beam inner connection portion 417 are both connected to the first end of the longitudinal beam main body portion 411 through the longitudinal beam front joint 412 .

[0084] Specifically, a Y-shaped bracket of a longitudinal beam front joint 412 can be installed at the front end of the longitudinal beam main body 411, and the longitudinal beam front joint 412 can connect the longitudinal beam main body 411, the longitudinal beam outer connection part 414 and the longitudinal beam inner connection part 417 into an integral Y-shaped structure through multiple bolts; in the vehicle body frame structure, the two Y-shaped structures on both sides are connected by the anti-collision beam assembly 420 to form a closed frame, so as to set the installation points of structures such as the rear suspension and the rear subframe on the closed frame.

[0085] Aluminum alloy profiles have the characteristics of simple molding molds and low costs, and the length of the parts can be adjusted as needed, with good dimensional expandability, which improves the structural flexibility of the longitudinal beam outer connection part 414, the longitudinal beam inner connection part 417 and the longitudinal beam main body 411; while aluminum castings have the advantage of high molding freedom and can mold complex parts. Therefore, the connection between the longitudinal beam main body 411 and the longitudinal beam connection part adopts aluminum castings, which can simplify the number of parts of the body frame structure and increase the integration of the body frame structure.

[0086] In addition, through the coordination of aluminum alloy profiles and aluminum castings, the vehicle body frame structure can achieve the characteristics of light weight, low cost and simple structure. Compared with stamped sheet metal parts, it has the advantages of easy forming, light weight and high strength, thus achieving a balance between the performance, cost and reliability of the vehicle body frame structure.

[0087] Alternatively, see Figure 1 and Figure 2 The longitudinal beam front joint 412 includes a main joint portion, an external joint portion and an internal joint portion. The main joint portion is suitable for connecting to the first end of the longitudinal beam main portion 411, the external joint portion is suitable for connecting to the first end of the longitudinal beam external connection portion 414, and the internal joint portion is suitable for connecting to the first end of the longitudinal beam internal connection portion 417.

[0088] Specifically, the longitudinal beam front joint 412 can be formed into a Y-shaped joint structure at one time, and the rear end of the Y-shaped joint structure forms a main joint part, and the front end of the Y-shaped joint structure is forked to form an outer joint part and an inner joint part, so that the first end of the longitudinal beam outer connection part 414 and the first end of the longitudinal beam inner connection part 417 are connected to the first end of the longitudinal beam main body part 411 through the longitudinal beam front joint 412, thereby improving the stability of the connection between the longitudinal beam outer connection part 414 and the longitudinal beam inner connection part 417 and the longitudinal beam main body part 411.

[0089] Alternatively, see Figures 4 to 6 , the vehicle body frame structure further includes a front mounting seat 415 and a rear mounting seat 466, the front mounting seat 415 is connected to the longitudinal beam outer connecting portion 414, and the rear mounting seat 466 is connected to the longitudinal beam main body;

[0090] The front mounting seat 415 and the rear mounting seat 466 are used to connect to the sub-frame.

[0091] In one embodiment, see Figure 6 The front mounting seat 415 is connected to the bottom of the longitudinal beam outer connecting portion 414, and the front mounting cover plate (not shown in the figure) is connected to the bottom of the front mounting seat 415 through a wire screw sleeve 415a, so that the sub-frame is positioned when the sub-frame is connected to the front mounting seat 415. The rear mounting seat 466 is arranged below the middle section of the longitudinal beam main body 411 to facilitate the connection of the sub-frame; the front mounting seat 415 and the rear mounting seat 466 can be arranged symmetrically in the body frame structure, and the body frame structure forms a four-point installation of the sub-frame through two sub-frame mounting seats on the left and right sides to ensure the stability of the body frame structure.

[0092] Alternatively, see Fig.13 and Fig.14The rear mounting seat 466 has a first connecting surface 466b and a second connecting surface 466c. In the vehicle width direction, the first connecting surface is connected to the side of the longitudinal beam main body 411 away from the passenger compartment, and in the vehicle height direction, the second connecting surface is connected to the bottom surface of the longitudinal beam main body 411.

[0093] Specifically, the rear mounting seat 466 is welded to different surfaces of the longitudinal beam main body 411 through the first connecting surface 466b and the second connecting surface 466c, and is connected to the longitudinal beam main body 411 through a second bolt 466d in the Y direction and connected to the longitudinal beam main body 411 through a second bolt 466d in the Z direction. By combining welding and bolt connection, the vibration frequency of a part of the rear suspension of the body frame structure can be reduced, which helps to improve the connection strength and dynamic stiffness of the subframe mounting point on the body frame structure.

[0094] Optionally, the vehicle body frame structure further includes a first frame crossbeam 464, the longitudinal beam main body 411 includes a left longitudinal beam and a right longitudinal beam, and the rear mounting seat includes a left rear mounting seat and a right rear mounting seat;

[0095] Two ends of the first frame cross beam 464 are connected to the left longitudinal beam and the right longitudinal beam respectively, and two ends of the first frame cross beam 464 are connected to the left rear mounting seat and the right rear mounting seat respectively.

[0096] Specifically, the rear mounting seat 466 is welded to the longitudinal beam main body 411 and the first frame cross beam 464 through the first connecting surface 466b and the second connecting surface 466c, and is connected to the longitudinal beam main body 411 through a second bolt 466d in the Y direction, and is connected to the longitudinal beam main body 411 through a second bolt 466d in the Z direction after passing through the first frame cross beam 464. The vibration frequency of a part of the rear suspension of the body frame structure can be reduced by the combination of welding and bolt connection, which helps to improve the connection strength and dynamic stiffness of the subframe mounting point on the body frame structure.

[0097] Optionally, a mounting sleeve 466 a is further included, which is suitable for connecting to the sub-frame. A mounting hole is provided on the rear mounting seat 466 , and the mounting sleeve 466 a is disposed in the mounting hole and fixed in the rear mounting seat 466 .

[0098] Specifically, the mounting sleeve 466a is conical and has an end face flange at its lower end, the edge of which is welded and fixed to the rear mounting seat 466; a circular sleeve fixing sealing plate is added to the upper end of the mounting sleeve 466a, the inner side of the fixing sealing plate is welded and fixed to the mounting sleeve 466a, and the outer side is welded and fixed to the rear mounting seat 466. The mounting sleeve 466a is formed by casting and machining, and the inner diameter tapping of the mounting sleeve 466a matches the rear point mounting bolts of the rear sub-frame to ensure the installation stability of the sub-frame.

[0099] Optionally, in the vehicle width direction, the mounting sleeve 466a is disposed on a side of the longitudinal beam body portion 411 away from the passenger compartment.

[0100] Specifically, the mounting sleeve 466a is located outside the longitudinal beam main body 411 to form a cantilever structure, which can ensure the installation stability of the subframe when the subframe is connected to the outside of the longitudinal beam main body 411 and improve the structural strength of the vehicle body frame structure.

[0101] Alternatively, see Fig.10 and Fig.14 , further comprising a second cross beam 462 of the frame, wherein the front joint of the longitudinal beam comprises a left front joint of the longitudinal beam and a right front joint of the longitudinal beam, and the two ends of the second cross beam of the frame are respectively connected to the left front joint of the longitudinal beam and the right front joint of the longitudinal beam;

[0102] The longitudinal beam main body 411 includes a left longitudinal beam main body and a right longitudinal beam main body, the longitudinal beam left front joint is connected to the first end of the left longitudinal beam main body, and the longitudinal beam right front joint is connected to the first end of the right longitudinal beam main body.

[0103] Specifically, when the two ends of the second cross beam 462 of the frame are respectively connected to the left front joint of the longitudinal beam and the right front joint of the longitudinal beam, since the two ends of the first cross beam 464 of the frame are respectively connected to the left longitudinal beam and the right longitudinal beam, the second cross beam 462 of the frame, the first cross beam 464 of the frame, the left longitudinal beam and the right longitudinal beam form an annular frame structure, thereby improving the stability of the vehicle body frame structure.

[0104] In addition, the second cross beam 462 of the frame, the outer connecting portion 414 and the inner connecting portion 417 of the longitudinal beam on the left, the outer connecting portion 414 and the inner connecting portion 417 of the longitudinal beam on the right, and the cavity formed by the passenger compartment connecting plate 231 together form a frame structure, thereby improving the stability and force transmission effect of the vehicle body frame structure.

[0105] Alternatively, see Figure 7 and Figure 8, further comprising a passenger compartment connecting plate 231, wherein a cavity is provided in the passenger compartment connecting plate 231, and the passenger compartment connecting plate is connected to the second end of the outer connecting portion of the longitudinal beam and the second end of the inner connecting portion of the longitudinal beam;

[0106] The projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the outer connection part of the longitudinal beam in the front-rear direction of the vehicle, and the projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the inner connection part of the longitudinal beam in the front-rear direction of the vehicle.

[0107] Specifically, in the front-rear direction of the vehicle, the cavity and the outer connection part of the longitudinal beam can form a continuous force transmission and buffer structure. At the same time, the cavity and the inner connection part of the longitudinal beam can also form a continuous force transmission and buffer structure. When the cavity is deformed, the impact force transmitted by the outer connection part of the longitudinal beam and the inner connection part of the longitudinal beam can be buffered, thereby improving the impact resistance of the vehicle body frame structure.

[0108] Optionally, a reinforcement member 232 is provided in the cavity, and the second end of the outer connecting portion of the longitudinal beam and the second end of the inner connecting portion of the longitudinal beam are both connected to the reinforcement member.

[0109] Specifically, the cooperation between the reinforcement member 232 and the passenger compartment connecting plate 231 can increase the deformation resistance of the vehicle body frame structure, thereby enhancing the rear wall stiffness of the vehicle body frame structure.

[0110] In one embodiment, the vehicle body frame structure further includes a passenger compartment connecting plate 231 and a floor 211 , wherein a cavity is enclosed between the passenger compartment connecting plate 231 and the floor 211 , and the cavity is filled with a reinforcement member 232 .

[0111] Specifically, the floor 211 and the passenger compartment connecting plate 231 can form a cavity after welding or bonding, and a reinforcement 232 with a certain rigidity is filled inside the cavity. The reinforcement 232 can be a foam member or an elastic member. The foam member or the elastic member can fill the entire cavity to absorb external impact force when the passenger compartment connecting plate 231 and the floor 211 are deformed by force, thereby preventing the passenger compartment from deforming.

[0112] Specifically, the passenger compartment connecting plate 231 may include at least one of a front panel and a rear panel, so as to buffer the impact of the front and rear of the vehicle through the reinforcement 232 .

[0113] Optionally, the vehicle body frame structure further includes a longitudinal beam outer connection portion mounting plate 416, and the longitudinal beam outer connection portion is connected to the passenger compartment connection plate through the longitudinal beam outer connection portion mounting plate;

[0114] and / or;

[0115] It also includes a longitudinal beam inner connection portion mounting plate 418, and the longitudinal beam inner connection portion is connected to the passenger compartment connection plate through the longitudinal beam inner connection portion mounting plate.

[0116] Specifically, the longitudinal beam outer connection part 414 and the longitudinal beam inner connection part 417 can be connected to the longitudinal beam main body through the longitudinal beam front joint 412; the longitudinal beam outer connection part and the longitudinal beam inner connection part can be respectively connected to the passenger compartment connecting plate combination through the longitudinal beam outer connection part mounting plate 416 and the longitudinal beam inner connection part mounting plate 418, so as to ensure the connection strength and reliability of the joint parts in the vehicle body structure.

[0117] Optionally, in the vehicle width direction, two first reinforcing ribs are spaced apart on the mounting plate of the longitudinal beam outer connecting portion, and the longitudinal beam outer connecting portion is arranged between the two first reinforcing ribs;

[0118] and / or;

[0119] Two second reinforcing ribs are arranged at intervals on the mounting plate of the inner connecting portion of the longitudinal beam, and the inner connecting portion of the longitudinal beam is arranged between the two second reinforcing ribs.

[0120] Specifically, in the vehicle width direction, a first connection area is formed between two first reinforcing ribs spaced apart on the mounting plate 416 of the longitudinal beam outer connection part, and the longitudinal beam outer connection part is connected to the first connection area to realize the connection between the longitudinal beam main body and the passenger compartment through the longitudinal beam outer connection part 414, and the longitudinal beam outer connection part is arranged between the two first reinforcing ribs, that is, the longitudinal beam outer connection part can be limited by the two first reinforcing ribs to ensure the accuracy of the installation position of the longitudinal beam outer connection part and avoid the position deviation of the longitudinal beam outer connection part.

[0121] Specifically, in the vehicle width direction, a second connection area is formed between two second reinforcing ribs spaced apart on the mounting plate 418 of the inner connection portion of the longitudinal beam, and the inner connection portion of the longitudinal beam is connected to the second connection area to realize the connection between the main body of the longitudinal beam and the passenger compartment through the inner connection portion of the longitudinal beam, and the inner connection portion of the longitudinal beam is arranged between the two second reinforcing ribs, that is, the inner connection portion of the longitudinal beam can be limited by the two second reinforcing ribs to ensure the accuracy of the installation position of the inner connection portion of the longitudinal beam.

[0122] Alternatively, see Fig.10 , an external connection block 233 is also provided in the cavity, and the longitudinal beam external connection part 414 is connected to the external connection block 233 through the longitudinal beam external connection part mounting plate;

[0123] and / or;

[0124] A middle connection block 234 is also provided in the cavity, and the longitudinal beam inner connection portion 417 is connected to the middle connection block 234 via a longitudinal beam inner connection portion mounting plate.

[0125] In one embodiment, the longitudinal beam outer connection portion 414 is connected to the outer connection block 233 via a longitudinal beam outer connection portion mounting plate 416 , and the longitudinal beam inner connection portion 417 is connected to the middle connection block 234 via a longitudinal beam inner connection portion mounting plate 418 .

[0126] Specifically, the width of the middle connecting block 234 and the outer connecting block 233 can be designed to be consistent with the width of the cavity. The middle connecting block 234 and the outer connecting block 233 are both connected to the reinforcement so that after the reinforcement 232 is filled in the cavity, the middle connecting block 234 and the outer connecting block 233 can be completely fixed inside the cavity, thereby facilitating the formation of a force transmission support structure through the middle connecting block 234 and the outer connecting block 233.

[0127] Specifically, see Fig.12 The inner connection part 417 of the longitudinal beam is welded as a whole with the two third connection surfaces 418a of the inner connection part mounting plate 418 of the longitudinal beam, and then connected with the third bolt hole 234a of the middle connection block 234 using the first bolt 418b to form an inner force transmission path of the vehicle body frame structure, which facilitates the force transmission in the vehicle body frame structure.

[0128] Alternatively, see Figure 7 and Fig.10 , the vehicle body frame structure further includes a threshold beam 244 and a threshold connecting block 249, wherein the threshold connecting block 249 is fixed on the threshold beam 244;

[0129] The outer connection block 233 is connected to the threshold connection block 249 .

[0130] Specifically, the threshold beam 244 may be an aluminum threshold beam, and the threshold connecting block 249 is welded to the threshold beam 244; see Figure 7 The two fourth connection surfaces 416a of the longitudinal beam outer connection part 414 and the longitudinal beam outer connection part mounting plate 416 are welded as a whole, and the outer connection block 233 is connected to the longitudinal beam outer connection part mounting plate 416 by a third bolt 416b passing through the first bolt hole 233a, and is connected to the threshold connection block 249 by a bolt passing through the second bolt hole 233b, so as to form an outer force transmission path of the vehicle body frame structure, which is convenient for force transmission in the vehicle body frame structure.

[0131] Optionally, in the vehicle width direction, the threshold connection block 249 is disposed on a side of the outer connection block 233 away from the middle connection block 234 .

[0132] Specifically, the threshold connection block 249 is connected to the side of the outer connection block 233 away from the middle connection block 234 by a connection bolt 249a. In the height direction of the vehicle, the width of the threshold connection block 249 gradually increases from top to bottom, so that the threshold connection block 249 forms a trapezoidal structure. The trapezoidal block can increase the force transmission angle by using the material of the threshold connection block 249 itself, so as to reduce the stress concentration at the threshold connection block 249 and ensure the connection stability of the threshold connection block 249.

[0133] Alternatively, see Figure 7 The passenger compartment connecting plate 231 has a connecting plate main body 2311 and a side plate 2312 connected to each other, and the external connecting block 233 is connected to the connecting plate main body and the side plate respectively.

[0134] In one embodiment, the external connection block 233 is in a triangular structure and is disposed at the connection between the connecting plate main body and the side plate; the two short sides of the triangular structured external connection block 233 are respectively connected to the connecting plate main body 2311 and the side plate 2312 .

[0135] The connecting plate main body is located between the longitudinal beam outer connecting portion 414 and the outer connecting block 233, and the side plate is located between the threshold connecting block 249 and the outer connecting block 233;

[0136] The angle between the connecting plate main body and the side plate is greater than or equal to 90°.

[0137] Specifically, the passenger compartment connecting plate 231, the reinforcement 232, the outer connecting block 233 and the middle connecting block 234 form the rear enclosure assembly 230. The outer connecting block 233 is designed as a multi-cavity triangular structure to improve the structural stability of the outer connecting block 233 and ensure uniform force transmission of the outer connecting block 233.

[0138] Furthermore, the angle between the connecting plate main body at the surface where the first bolt hole 233a is located and the side plate at the surface where the second bolt hole 233b is located is greater than or equal to 90°, which means that the angle between the threshold connecting block 249 and the connecting plate main body is designed to be greater than or equal to 90°, making the force transmission in the vehicle body frame structure smoother and preventing stress concentration.

[0139] In one embodiment, the side panel is parallel to the longitudinal beam outer connection portion 414, so that the force applied to the longitudinal beam outer connection portion 414 can be linearly transferred to the side panel, thereby ensuring the effectiveness of force transfer in the vehicle body frame structure.

[0140] like Fig.14The figure shows the force transmission structure of the vehicle body frame structure. When the rear end of the vehicle body frame structure is subjected to impact force F, in addition to the two middle cross beams participating in the force decomposition, the force can also be transmitted through the Y-shaped structure and the inserts in the rear cross beam cavity of the cockpit, so as to construct the vehicle body frame structure into a closed rear frame U-shaped force transmission structure and a parallel door sill force transmission structure, which effectively disperses the concentration of force on the vehicle body frame structure during rear collision, so that the vehicle body frame structure can be applied to vehicles with short wheelbase and large impact on the cockpit sill.

[0141] In one embodiment, a weight-reducing hole is provided on the external connection block 233, and the weight-reducing hole is a through hole that penetrates along the height direction of the vehicle, so as to achieve lightweighting of the vehicle body frame structure while ensuring the connection strength of the vehicle body frame structure.

[0142] In another embodiment, the outer connection block 233 and the longitudinal beam outer connection portion mounting plate 416 may be connected by bolts to facilitate connection and disassembly between the outer connection block 233 and the longitudinal beam outer connection portion mounting plate 416, thereby improving the strength of the vehicle body frame structure connection.

[0143] In one embodiment, the middle connecting block 234 is arranged in the cavity of the passenger compartment connecting plate 231, and in the front-rear direction of the vehicle, both sides of the middle connecting block 234 are connected to the side walls of the cavity; the middle connecting block 234 is provided with a weight-reducing hole, which is a through hole that passes through along the height direction of the vehicle, so as to achieve the lightweight of the body frame structure on the basis of ensuring the connection strength of the body frame structure, and the middle connecting block 234 is bolted to the mounting plate 418 of the inner connection part of the longitudinal beam to improve the connection strength of the body frame structure.

[0144] Alternatively, see Fig.15 The longitudinal beam outer connection portion 414, the longitudinal beam inner connection portion 417 and the longitudinal beam front joint 412 are integrally formed.

[0145] Specifically, the longitudinal beam outer connection portion 414 , the longitudinal beam inner connection portion 417 and the longitudinal beam front joint 412 form an integrated V-shaped frame structure 400 .

[0146] Specifically, the longitudinal beam outer connection part 414, the longitudinal beam outer connection part mounting plate 416, the longitudinal beam inner connection part 417, the longitudinal beam inner connection part mounting plate 418 and the front mounting seat 415 of the rear subframe are cast as a whole to form an integrated V-shaped frame structure 400, which improves the integration of the body frame structure and reduces the workload of the body frame structure production process.

[0147] Optionally, the front mounting seat, the longitudinal beam outer connecting portion 414, the longitudinal beam inner connecting portion 417 and the longitudinal beam front joint 412 are integrally formed.

[0148] Specifically, when the front mounting seat 415 is connected to the bottom of the longitudinal beam outer connection part 414, the front mounting seat, the longitudinal beam outer connection part 414, the longitudinal beam inner connection part 417 and the longitudinal beam front joint 412 are integrally formed, which can ensure the position accuracy and connection strength of the front mounting seat 415 connected to the longitudinal beam outer connection part 414, and ensure the installation stability of the front mounting seat 415 on the subframe.

[0149] Alternatively, see Figure 3 , further comprising an anti-collision beam assembly, wherein the anti-collision beam assembly 420 comprises an anti-collision beam 421 and an energy absorption box 422;

[0150] The energy absorbing box 422 is disposed between the anti-collision beam and the longitudinal beam main body 411 , and a first end of the energy absorbing box 422 is connected to the anti-collision beam 421 , and a second end of the energy absorbing box is connected to a second end of the longitudinal beam main body.

[0151] Specifically, the anti-collision beam assembly 420 is connected to the longitudinal beam main body 411 by bolts. Compared with the welding method, the production process is simplified on the basis of ensuring the performance of the vehicle body frame structure, which is beneficial to the maintenance and disassembly of the vehicle body frame structure to reduce the maintenance cost; when the rear of the vehicle is deformed by a large collision, the anti-collision beam 421 and the energy absorption box 422 absorb energy and deform. After the anti-collision beam 421 and the energy absorption box 422 absorb most of the energy, the deformation of the rear frame in the vehicle body frame structure can be avoided, thereby improving the impact resistance of the vehicle body frame structure.

[0152] Optionally, it also includes an energy absorption box connection part 413, which is provided with an installation cavity, the second end of the longitudinal beam main body is arranged in the installation cavity and connected to the energy absorption box connection part, and the second end of the energy absorption box is arranged in the installation cavity and connected to the energy absorption box connection part.

[0153] Specifically, the setting of the mounting cavity in the energy absorption box connecting part can facilitate the plug-in cooperation between the second end of the longitudinal beam main body and the second end of the energy absorption box and the energy absorption box connecting part, thereby improving the position accuracy of the connection between the second end of the energy absorption box and the second end of the longitudinal beam main body.

[0154] In one embodiment, in the front-to-rear direction of the vehicle, the energy absorption box 422 is connected to the front side of the anti-collision beam 421, and the energy absorption box 422 is connected to the rear of the longitudinal beam main body 411 through the energy absorption box connecting portion 413, the energy absorption box connecting portion 413 and the longitudinal beam main body 411 can be welded as a whole, the anti-collision beam 421 and the energy absorption box 422 in the anti-collision beam assembly 420 are welded as a whole, and a bolt sleeve 413a made of aluminum alloy is welded in the energy absorption box 422, and the attenuation of the bolt torque is reduced by the cooperation between the bolt and the bolt sleeve 413a, thereby increasing the connection strength of the energy absorption box connecting portion 413.

[0155] Optionally, the longitudinal beam outer connection portion 414 and the longitudinal beam inner connection portion 417 are spaced apart in the vehicle width direction.

[0156] When the anti-collision beam assembly 420 is subjected to the impact force of the vehicle, the impact force will generate two force transmission paths in the width direction of the vehicle. One path is transmitted to the door sill of the vehicle through the longitudinal beam main body 411 and the longitudinal beam outer connection part 414, and the other path is transmitted to the rear cross beam cavity through the longitudinal beam main body 411 and the longitudinal beam inner connection part 417, so as to reduce the local force on the passenger compartment, thereby preventing the passenger compartment from causing large deformation, so as to ensure the installation function requirements of the vehicle body frame structure while meeting the energy absorption and force transmission performance when the vehicle hits the rear.

[0157] Optionally, the longitudinal beam main body 411 is a rear longitudinal beam, and the passenger compartment connecting plate is a rear panel.

[0158] Specifically, the rear longitudinal beam can be connected to the rear panel via the longitudinal beam outer connection portion and the longitudinal beam inner connection portion, which can increase the deformation resistance of the vehicle body rear frame structure and further enhance the rear panel stiffness of the vehicle body rear frame structure.

[0159] An embodiment of the present application also provides a vehicle, which includes the vehicle body frame structure.

[0160] Specifically, in the vehicle body frame structure, the vehicle body frame structure includes a longitudinal beam main body portion 411; a longitudinal beam connecting portion, the longitudinal beam connecting portion includes a longitudinal beam outer connecting portion 414 and a longitudinal beam inner connecting portion 417, the longitudinal beam outer connecting portion 414 and the longitudinal beam inner connecting portion 417 are connected to the longitudinal beam main body portion 411 so that the longitudinal beam outer connecting portion 414, the longitudinal beam inner connecting portion 417 and the longitudinal beam main body portion 411 form a Y-shaped structure, the longitudinal beam outer connecting portion 414 and the longitudinal beam inner connecting portion 417 can disperse the force of the longitudinal beam main body portion 411 to reduce the local force of the passenger compartment, thereby improving the collision strength of the vehicle body frame structure and ensuring the driving safety of the vehicle.

[0161] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A vehicle body frame structure, characterized in that: include: A longitudinal beam main body (411); A longitudinal beam connection portion, the longitudinal beam main body portion (411) being connected to the longitudinal beam connection portion; The longitudinal beam connection portion includes a longitudinal beam outer connection portion (414) and a longitudinal beam inner connection portion (417), and the first end of the longitudinal beam outer connection portion and the first end of the longitudinal beam inner connection portion are both connected to the first end of the longitudinal beam main body portion; The second end of the longitudinal beam outer connection part is spaced apart from the second end of the longitudinal beam inner connection part, so that the longitudinal beam outer connection part (414), the longitudinal beam inner connection part (417) and the longitudinal beam main body part (411) form a Y-shaped structure.

2. The vehicle body frame structure according to claim 1, characterized in that: It also includes a longitudinal beam front joint (412), and the first end of the longitudinal beam outer connection part (414) and the first end of the longitudinal beam inner connection part (417) are both connected to the first end of the longitudinal beam main body (411) through the longitudinal beam front joint (412).

3. The vehicle body frame structure according to claim 2, characterized in that: The longitudinal beam front joint (412) includes a main joint portion, an external joint portion and an internal joint portion, wherein the main joint portion is suitable for connecting to the first end of the longitudinal beam main portion (411), the external joint portion is suitable for connecting to the first end of the longitudinal beam external connection portion (414), and the internal joint portion is suitable for connecting to the first end of the longitudinal beam internal connection portion (417).

4. The vehicle body frame structure according to claim 2, characterized in that: It also includes a front mounting seat (415) and a rear mounting seat (466), wherein the front mounting seat (415) is connected to the longitudinal beam outer connecting portion (414), and the rear mounting seat (466) is connected to the longitudinal beam main body portion; The front mounting seat (415) and the rear mounting seat (466) are used to connect the auxiliary frame.

5. The vehicle body frame structure according to claim 4, characterized in that: The rear mounting seat (466) has a first connecting surface (466b) and a second connecting surface (466c). In the vehicle width direction, the first connecting surface is connected to the side of the longitudinal beam main body (411) away from the passenger compartment, and in the vehicle height direction, the second connecting surface is connected to the bottom surface of the longitudinal beam main body (411).

6. The vehicle body frame structure according to claim 4, characterized in that: It also includes a mounting sleeve (466a) which is suitable for connecting to the sub-frame. The rear mounting seat (466) is provided with a mounting hole. The mounting sleeve (466a) is arranged in the mounting hole and fixed in the rear mounting seat (466).

7. The vehicle body frame structure according to claim 6, characterized in that: In the vehicle width direction, the mounting sleeve (466a) is arranged on a side of the longitudinal beam main body (411) away from the passenger compartment.

8. The vehicle body frame structure according to claim 4, characterized in that: It also includes a first frame crossbeam (464), the longitudinal beam main body (411) includes a left longitudinal beam and a right longitudinal beam spaced apart in the vehicle width direction, and the rear mounting seat includes a left rear mounting seat and a right rear mounting seat; The two ends of the first frame cross beam (464) are respectively connected to the left longitudinal beam and the right longitudinal beam, and the two ends of the first frame cross beam (464) are respectively connected to the left rear mounting seat and the right rear mounting seat.

9. The vehicle body frame structure according to claim 2, characterized in that: It also includes a second cross beam (462) of the frame, wherein the front joint of the longitudinal beam includes a left front joint of the longitudinal beam and a right front joint of the longitudinal beam, and two ends of the second cross beam of the frame are respectively connected to the left front joint of the longitudinal beam and the right front joint of the longitudinal beam; The longitudinal beam main body (411) comprises a left longitudinal beam main body and a right longitudinal beam main body, the longitudinal beam left front joint is connected to the first end of the left longitudinal beam main body, and the longitudinal beam right front joint is connected to the first end of the right longitudinal beam main body.

10. The vehicle body frame structure according to claim 1, characterized in that: Also included is a passenger compartment connection plate (231), wherein a cavity is provided in the passenger compartment connection plate (231), and the passenger compartment connection plate is connected to the second end of the longitudinal beam outer connection portion and the second end of the longitudinal beam inner connection portion; The projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the outer connection part of the longitudinal beam in the front-rear direction of the vehicle, and the projection of the cavity in the front-rear direction of the vehicle at least partially overlaps with the projection of the second end of the inner connection part of the longitudinal beam in the front-rear direction of the vehicle.

11. The vehicle body frame structure according to claim 10, characterized in that: A reinforcement member (232) is arranged in the cavity, and the second end of the outer connecting portion of the longitudinal beam and the second end of the inner connecting portion of the longitudinal beam are both connected to the reinforcement member.

12. The vehicle body frame structure according to claim 11, characterized in that: It also includes a longitudinal beam outer connection portion mounting plate (416), wherein the longitudinal beam outer connection portion is connected to the passenger compartment connection plate via the longitudinal beam outer connection portion mounting plate; and / or; It also includes a longitudinal beam inner connection portion mounting plate (418), and the longitudinal beam inner connection portion is connected to the passenger compartment connection plate through the longitudinal beam inner connection portion mounting plate.

13. The vehicle body frame structure according to claim 12, characterized in that: In the vehicle width direction, two first reinforcing ribs are arranged at intervals on the mounting plate of the longitudinal beam outer connecting portion, and the longitudinal beam outer connecting portion is arranged between the two first reinforcing ribs; and / or; Two second reinforcing ribs are arranged at intervals on the mounting plate of the inner connecting portion of the longitudinal beam, and the inner connecting portion of the longitudinal beam is arranged between the two second reinforcing ribs.

14. The vehicle body frame structure according to claim 13, characterized in that: An external connection block (233) is also provided in the cavity, and the longitudinal beam external connection portion (414) is connected to the external connection block (233) via the longitudinal beam external connection portion mounting plate; and / or; A middle connection block (234) is also provided in the cavity, and the longitudinal beam inner connection portion (417) is connected to the middle connection block (234) via a longitudinal beam inner connection portion mounting plate.

15. The vehicle body frame structure according to claim 14, characterized in that: It also includes a threshold beam (244) and a threshold connecting block (249), wherein the threshold connecting block (249) is fixed on the threshold beam (244); The outer connection block (233) is connected to the threshold connection block (249).

16. The vehicle body frame structure according to claim 15, characterized in that: In the vehicle width direction, the rocker connection block is arranged on a side of the outer connection block away from the middle connection block.

17. The vehicle body frame structure according to claim 15, characterized in that: The passenger compartment connection plate (231) comprises a connection plate main body (2311) and a side plate (2312) connected to each other, and the external connection block (233) is respectively connected to the connection plate main body and the side plate.

18. The vehicle body frame structure according to claim 4, characterized in that: The longitudinal beam outer connection portion (414), the longitudinal beam inner connection portion (417) and the longitudinal beam front joint (412) are integrally formed.

19. The vehicle body frame structure according to claim 18, characterized in that: The front mounting seat, the longitudinal beam outer connecting portion (414), the longitudinal beam inner connecting portion (417) and the longitudinal beam front joint (412) are integrally formed.

20. The vehicle body frame structure according to claim 1, characterized in that: Also included is an anti-collision beam assembly, wherein the anti-collision beam assembly (420) includes an anti-collision beam (421) and an energy absorption box (422); The energy absorption box (422) is arranged between the anti-collision beam and the longitudinal beam main body (411), and the first end of the energy absorption box (422) is connected to the anti-collision beam (421), and the second end of the energy absorption box is connected to the second end of the longitudinal beam main body.

21. The vehicle body frame structure according to claim 20, characterized in that: It also includes an energy absorption box connection part (413), the energy absorption box connection part is provided with a mounting cavity, the second end of the longitudinal beam main body is arranged in the mounting cavity and connected to the energy absorption box connection part, and the second end of the energy absorption box is arranged in the mounting cavity and connected to the energy absorption box connection part.

22. The vehicle body frame structure according to claim 1, characterized in that: The longitudinal beam outer connection portion (414) and the longitudinal beam inner connection portion (417) are arranged at intervals in the vehicle width direction.

23. The vehicle body frame structure according to claim 10, characterized in that: The longitudinal beam main body (411) is a rear longitudinal beam, and the passenger compartment connecting plate is a rear panel.

24. A vehicle, characterized in that: It comprises the vehicle body frame structure as described in any one of claims 1-23.

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