Container cross beam connecting assembly and method for improving stability of van

Abstract

The invention discloses a container cross beam connecting assembly and method for improving the stability of a van, and belongs to the technical field of van. According to the cargo box cross beam connecting assembly and method for improving the stability of the van, the cargo box cross beam connecting assembly comprises side cargo box connecting plates and a cargo box connecting cross beam, a connecting frame is installed between the two side cargo box connecting plates, and an upper retainer and a lower retainer are installed above and below the cargo box connecting cross beam respectively. According to the cross beam connecting assembly, the problems that in the actual using process of an existing cross beam connecting assembly, the structure is single, the installation mode is complex, and rapid disassembly and assembly for maintenance work are not facilitated are solved, through the integrally-formed connecting notches, two adjacent side container connecting plates can be conveniently connected through the connecting frame, and the connecting efficiency is improved. The height position of the connecting frame is the same as the height of the side container connecting plate, so that the installation requirement of the cross beam is met, the structural position is stable, and connecting and fixing work is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of vans, and in particular to a cargo box crossbeam connection assembly and method for improving the stability of a van. Background Art

[0002] At present, the middle longitudinal beam, cross beam and side longitudinal beam of the floor frame of the truck cargo box are generally made of channel steel, and the cross beam is connected to the two middle longitudinal beams, and a side longitudinal beam is connected to the left and right sides of the cross beam. The advantage of this is that the production and processing of the floor frame is relatively convenient, and no stamping equipment is required.

[0003] A Chinese patent with announcement number CN107380268A discloses a truck cargo box floor frame, which relates to the field of engineering transportation technology; it consists of an intermediate longitudinal beam, an intermediate cross beam, an outwardly extending cross beam, a side longitudinal beam and a connecting plate; the intermediate cross beam is placed between the intermediate longitudinal beams and is firmly connected, the outwardly extending cross beam is connected to both sides of the two intermediate longitudinal beams, both sides of the outwardly extending cross beam are connected to the side longitudinal beams, and the connecting plates are connected to the corresponding positions of the lower outer parts of the vertical surfaces of the two intermediate longitudinal beams; the structure is simple, the mass is small, the center of gravity is low, and it complies with the lightweight design principle, and the truck using this cargo box has good driving stability due to the low center of gravity; this lightweight truck cargo box floor frame can be widely used in truck cargo boxes.

[0004] In actual use, the crossbeam connection assembly of the above patent has a simple structure and a complex installation method, which is not conducive to rapid disassembly and maintenance; therefore, it does not meet existing needs. In this regard, we propose a cargo box crossbeam connection assembly and method for improving the stability of a van. Summary of the invention

[0005] The purpose of the present invention is to provide a cargo box cross beam connection assembly and method for improving the stability of a van, thereby solving the problem that the cross beam connection assembly of the above patent proposed in the above background technology has a single structure and a complex installation method during actual use, which is not conducive to rapid disassembly and maintenance.

[0006] To achieve the above object, the present invention provides the following technical solution: a cargo box cross beam connection assembly for improving the stability of a van, comprising a side cargo box connection plate and a cargo box connection cross beam, wherein the cargo box connection cross beam penetrates the side cargo box connection plate and is arranged in the middle of the side cargo box connection plate;

[0007] There are two side cargo box connecting plates, a connecting frame is installed between the two side cargo box connecting plates, and the connecting frame is embedded between the two side cargo box connecting plates and is engaged with the side cargo box connecting plates;

[0008] An upper retainer and a lower retainer are respectively installed above and below the cargo box connecting crossbeam, and the upper retainer and the lower retainer are embedded in the upper end and the lower end of the cargo box connecting crossbeam and are engaged with the cargo box connecting crossbeam.

[0009] Preferably, both sides of the outside of the side cargo box connecting plate are provided with integrally formed connecting grooves, and both sides of the side cargo box connecting plate are provided with integrally formed combined surfaces, a locking frame is installed at one end of the connecting frame, the locking frame is welded to the connecting frame, and the locking frame is embedded in the connecting groove to engage the combined surfaces of the two side cargo box connecting plates.

[0010] Preferably, the upper end and the lower end of the side cargo box connecting plate are both provided with an integrally formed positioning and mounting groove, and the positioning and mounting groove is used to fix the side cargo box connecting plate and the bottom of the van cargo box.

[0011] Preferably, an integrally formed positioning socket is provided in the middle of the side cargo box connecting plate, an integrally formed H-shaped steel groove is provided inside the cargo box connecting beam, and integrally formed through-heads are respectively provided at both ends of the cargo box connecting beam, and the through-heads pass through the positioning socket and engage with the side cargo box connecting plate.

[0012] Preferably, a plurality of integrally formed through holes are provided at the inner center of the cargo box connecting beam, and the through holes are used to install steel bars to support the cargo box connecting beam. An integrally formed anti-skid groove is provided on the outside of the cargo box connecting beam, and both ends of the upper retaining frame and the lower retaining frame are embedded in the anti-skid groove and engaged with the cargo box connecting beam through the anti-skid groove.

[0013] Preferably, the upper end of the upper retainer and the lower end of the lower retainer are both provided with an integrally formed limiting block, and the outside of the connecting frame passes through the limiting block and is engaged with the upper retainer and the lower retainer.

[0014] Preferably, a first movable folding plate is installed on the upper end of the limit block of the upper retaining frame, and a magnetic pad is provided at one end of the first movable folding plate, and the magnetic pad is used to attract the limit block and the first movable folding plate.

[0015] Preferably, a second movable folding plate is installed at the lower end of the limit block of the lower retaining frame, and one end of the second movable folding plate and the first movable folding plate are both installed with a spring locking shaft, the second movable folding plate and the first movable folding plate are both movably connected to the limit block through the spring locking shaft, and the other end of the second movable folding plate is fixedly connected to the limit block through a buckle.

[0016] Preferably, the interior of the limit block is provided with an integrally formed positioning slot, the exterior of the connecting frame is inserted into the positioning slot and engages with the limit block, a clamping frame is installed at the rear end of the connecting frame, the clamping frame is fixedly connected to the two side cargo box connecting plates by a buckle, and the exterior of the clamping frame is provided with an integrally formed locking slot, and the tail end of the connecting frame engages with the clamping frame through the locking slot.

[0017] A method for installing a cargo box cross beam connection assembly for improving the stability of a van includes the following steps:

[0018] Step 1: According to the length of the cargo box of the van, select the corresponding number of side cargo box connecting plates, and insert the side cargo box connecting plates on the outside of the cargo box;

[0019] Step 2: Insert the cargo box connecting beam into the positioning socket and clamp the penetration head into the side cargo box connecting plate;

[0020] Step 3: Insert the upper retainer and the lower retainer into the anti-slip grooves on the outside of the cargo box connecting beam, insert the connecting frame between the two side cargo box connecting plates, clamp the locking frame into the connecting grooves, and fix the two connecting frames with the clamping frame;

[0021] Step 4: After the connection frame is fixed, the positions of the upper retaining frame, the lower retaining frame and the connection frame are maintained by covering the first movable folding plate and the second movable folding plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. During the installation process of the crossbeam connecting assembly of the present invention, a corresponding number of side cargo box connecting plates are selected according to the length of the cargo box of the van, and the side cargo box connecting plates are inserted on the outside of the cargo box. This can adapt to cargo boxes of vans of different sizes, and has good adaptability. In addition, through the integrally formed connecting notches, it is convenient to connect two adjacent side cargo box connecting plates through a connecting frame. The height position of the connecting frame is the same as the height of the side cargo box connecting plates, thereby meeting the installation requirements of the crossbeam, and the structural position is stable, which is convenient for connection and fixing work.

[0024] 2. When the present invention is in use, the cargo box connecting beam is inserted into the positioning socket, the through head is clamped in the side cargo box connecting plate, the upper retaining frame and the lower retaining frame are inserted into the anti-slip groove outside the cargo box connecting beam, the connecting frame is inserted between the two side cargo box connecting plates, the locking frame is clamped in the connecting groove, and the two connecting frames are fixed by the clamping frame. The multi-directional interlocking installation method keeps the positions of multiple cargo box connecting beams and side cargo box connecting plates stable, which is convenient for van transportation and improves work efficiency.

[0025] 3. During the installation process of the crossbeam connecting assembly of the present invention, after the connection frame is fixed, the position between the upper retaining frame and the lower retaining frame and the connection frame is maintained by covering the first movable folding plate and the second movable folding plate, and the strength of the first movable folding plate and the second movable folding plate is maintained by the spring locking shaft. At the same time, the second movable folding plate is fixed by the buckle to lock the connection frame at the lower end. At the same time, the first movable folding plate is conveniently disassembled and assembled by the magnetic pad, so that the cargo box connecting crossbeam can be disassembled to facilitate maintenance and repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an axonometric view of the present invention from the side;

[0027] Figure 2 is an axonometric view of the present invention from the front;

[0028] Figure 3 is an axonometric view of the present invention from the rear;

[0029] Figure 4 An axonometric view of the present invention viewed from above;

[0030] Figure 5 This is an axonometric view of the upper retainer of the present invention after partial disassembly from above;

[0031] Figure 6 It is an axonometric view of the present invention after being exploded and viewed from above;

[0032] Figure 7 It is an axonometric view of the upper retainer and the connecting frame from the front of the present invention.

[0033] In the figure: 1. Side cargo box connecting plate; 101. Connecting slot; 102. Positioning installation slot; 103. Combination surface; 104. Positioning socket; 2. Cargo box connecting beam; 201. H-shaped steel slot; 202. Through hole; 203. Through head; 204. Anti-slip slot; 3. Upper retaining frame; 301. Limiting block; 302. First movable folding plate; 303. Positioning slot; 304. Magnetic pad; 305. Spring locking shaft; 4. Connecting frame; 401. Locking frame; 402. Clamping frame; 403. Locking slot; 5. Lower retaining frame; 501. Second movable folding plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to solve the problem that the existing crossbeam connection components have a single structure and poor applicability in actual use, and are difficult to meet the needs of different van cargo boxes, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0036] A cargo box cross beam connection assembly for improving the stability of a van, comprising a side cargo box connection plate 1 and a cargo box connection cross beam 2, wherein the cargo box connection cross beam 2 penetrates the side cargo box connection plate 1 and is arranged in the middle of the side cargo box connection plate 1;

[0037] Two side cargo box connecting plates 1 are provided, and a connecting frame 4 is installed between the two side cargo box connecting plates 1. The connecting frame 4 is embedded between the two side cargo box connecting plates 1 and is engaged with the side cargo box connecting plates 1;

[0038] An upper retainer 3 and a lower retainer 5 are respectively installed above and below the cargo box connecting beam 2. The upper retainer 3 and the lower retainer 5 are embedded in the upper and lower ends of the cargo box connecting beam 2 and are engaged with the cargo box connecting beam 2. During the installation of the beam connecting assembly, a corresponding number of side cargo box connecting plates 1 are selected according to the length of the van cargo box, and the side cargo box connecting plates 1 are inserted on the outside of the cargo box. This can adapt to van cargo boxes of different sizes and has good adaptability.

[0039] Both sides of the outside of the side cargo box connecting plate 1 are provided with integrally formed connecting grooves 101, and both sides of the side cargo box connecting plate 1 are provided with integrally formed combined surfaces 103. A locking frame 401 is installed at one end of the connecting frame 4. The locking frame 401 is welded to the connecting frame 4, and the locking frame 401 is embedded in the connecting groove 101 to engage the combined surfaces 103 of the two side cargo box connecting plates 1. Through the integrally formed connecting groove 101, it is convenient to connect the two adjacent side cargo box connecting plates 1 through the connecting frame 4. The height position of the connecting frame 4 is the same as the height of the side cargo box connecting plate 1, thereby meeting the installation requirements of the crossbeam. The structural position is stable, which is convenient for connection and fixing.

[0040] The upper and lower ends of the side cargo box connecting plate 1 are both provided with an integrally formed positioning and mounting groove 102 , and the positioning and mounting groove 102 is used to fix the side cargo box connecting plate 1 and the bottom of the van cargo box.

[0041] Specifically, during the installation of the crossbeam connecting assembly, a corresponding number of side cargo box connecting plates 1 are selected according to the length of the van cargo box, and the side cargo box connecting plates 1 are inserted on the outside of the cargo box. This can adapt to van cargo boxes of different sizes and has good adaptability. In addition, through the one-piece connecting groove 101, it is convenient to connect two adjacent side cargo box connecting plates 1 through the connecting frame 4. The height position of the connecting frame 4 is the same as the height of the side cargo box connecting plates 1, thereby meeting the installation requirements of the crossbeam, and the structural position is stable, which is convenient for connection and fixing work.

[0042] In order to solve the problem that the existing beam connection components have a single structure and a complex installation method in actual use, which is not conducive to rapid disassembly and maintenance, please refer to Figure 1 - Figure 4 , Figure 6 , this embodiment provides the following technical solutions:

[0043] An integrally formed positioning socket 104 is provided in the middle of the side cargo box connecting plate 1, an integrally formed H-shaped steel groove 201 is provided inside the cargo box connecting beam 2, and integrally formed through heads 203 are respectively provided at both ends of the cargo box connecting beam 2. The through heads 203 pass through the positioning socket 104 and engage with the side cargo box connecting plate 1. When the beam connecting assembly is in use, the cargo box connecting beam 2 is inserted into the positioning socket 104, and the through heads 203 are clamped in the side cargo box connecting plate 1. The connecting frame 4 is inserted between the two side cargo box connecting plates 1 by inserting the upper retaining frame 3 and the lower retaining frame 5 into the anti-slip groove 204 on the outside of the cargo box connecting beam 2.

[0044] A plurality of integrally formed through holes 202 are arranged at the inner center of the cargo box connecting beam 2, and the through holes 202 are used to install steel bars to support the cargo box connecting beam 2. An integrally formed anti-skid groove 204 is arranged on the outside of the cargo box connecting beam 2. Both ends of the upper retaining frame 3 and the lower retaining frame 5 are embedded in the anti-skid groove 204 and engaged with the cargo box connecting beam 2 through the anti-skid groove 204. The locking frame 401 is engaged in the connecting groove 101, and the two connecting frames 4 are fixed by the clamping frame 402. The multi-directional interlocking installation method keeps the positions of multiple cargo box connecting beams 2 and the side cargo box connecting plates 1 stable, facilitates the transportation of vans, and improves the working effect.

[0045] Specifically, when the crossbeam connecting assembly is in use, the cargo box connecting crossbeam 2 is inserted into the positioning socket 104, the through head 203 is clamped in the side cargo box connecting plate 1, and the upper retaining frame 3 and the lower retaining frame 5 are inserted into the anti-slip groove 204 outside the cargo box connecting crossbeam 2. The connecting frame 4 is inserted between the two side cargo box connecting plates 1, and the locking frame 401 is clamped in the connecting groove 101. The two connecting frames 4 are fixed by the clamping frame 402. The multi-directional interlocking installation method can keep the positions of multiple cargo box connecting crossbeams 2 and side cargo box connecting plates 1 stable, facilitate the transportation of vans, and improve the working effect.

[0046] In order to solve the problem that the existing beam connection components are poorly positioned in actual use, affecting long-term transportation work and being unfavorable for long-term use, please refer to Figure 1 , Figure 5 - Figure 7 , this embodiment provides the following technical solutions:

[0047] The upper end of the upper retainer 3 and the lower end of the lower retainer 5 are both provided with an integrally formed limit block 301 , and the exterior of the connecting frame 4 penetrates the limit block 301 and engages with the upper retainer 3 and the lower retainer 5 .

[0048] A first movable folding plate 302 is installed at the upper end of the limit block 301 of the upper retaining frame 3, and a magnetic pad 304 is provided at one end of the first movable folding plate 302. The magnetic pad 304 is used to attract the limit block 301 and the first movable folding plate 302. The first movable folding plate 302 can be easily disassembled and assembled through the magnetic pad 304, so as to disassemble the cargo box connecting beam 2 and facilitate maintenance and repair work.

[0049] A second movable folding plate 501 is installed at the lower end of the limiting block 301 of the lower retaining frame 5, and a spring locking shaft 305 is installed at one end of the second movable folding plate 501 and the first movable folding plate 302. The second movable folding plate 501 and the first movable folding plate 302 are both movably connected to the limiting block 301 through the spring locking shaft 305, and the other end of the second movable folding plate 501 is fixedly connected to the limiting block 301 through a buckle. During the installation process of the crossbeam connecting assembly, after the fixing of the connecting frame 4 is completed, the position between the upper retaining frame 3 and the lower retaining frame 5 and the connecting frame 4 is maintained by covering the first movable folding plate 302 and the second movable folding plate 501.

[0050] An integrally formed positioning slot 303 is provided inside the limiting block 301, the outside of the connecting frame 4 is inserted into the positioning slot 303 and engages with the limiting block 301, a clamping frame 402 is installed at the rear end of the connecting frame 4, the clamping frame 402 is fixedly connected to the two side cargo box connecting plates 1 by buckles, and an integrally formed locking slot 403 is provided outside the clamping frame 402, the tail end of the connecting frame 4 is engaged with the clamping frame 402 by the locking slot 403, the strength of the first movable folding plate 302 and the second movable folding plate 501 is maintained by the spring locking shaft 305, and the second movable folding plate 501 is fixed by the buckle to lock the connecting frame 4 at the lower end.

[0051] Specifically, during the installation process of the beam connecting assembly, after the connection frame 4 is fixed, the position between the upper retaining frame 3 and the lower retaining frame 5 and the connection frame 4 is maintained by covering the first movable folding plate 302 and the second movable folding plate 501, and the strength of the first movable folding plate 302 and the second movable folding plate 501 is maintained by the spring locking shaft 305. At the same time, the second movable folding plate 501 is fixed by a buckle to lock the connection frame 4 at the lower end. At the same time, the first movable folding plate 302 is conveniently disassembled and assembled by the magnetic pad block 304, so as to disassemble the cargo box connecting beam 2 and facilitate maintenance and repair work.

[0052] A method for installing a cargo box cross beam connection assembly for improving the stability of a van includes the following steps:

[0053] Step 1: According to the length of the cargo box of the van, select the corresponding number of side cargo box connecting plates 1, insert the side cargo box connecting plates 1 on the outside of the cargo box, and conveniently connect two adjacent side cargo box connecting plates 1 through the connecting frame 4 through the integrally formed connecting notch 101;

[0054] Step 2: Insert the cargo box connecting beam 2 into the positioning socket 104, and clamp the penetration head 203 into the side cargo box connecting plate 1;

[0055] Step 3: Insert the upper retainer 3 and the lower retainer 5 into the anti-slip groove 204 outside the cargo box connecting beam 2, insert the connecting frame 4 between the two side cargo box connecting plates 1, and clamp the locking frame 401 in the connecting groove 101, and fix the two connecting frames 4 through the clamping frame 402. The multi-directional interlocking installation method keeps the positions of multiple cargo box connecting beams 2 and side cargo box connecting plates 1 stable, which is convenient for van truck transportation and improves work efficiency;

[0056] Step 4: After completing the fixation of the connecting frame 4, the position between the upper retaining frame 3 and the lower retaining frame 5 and the connecting frame 4 is maintained by covering the first movable folding plate 302 and the second movable folding plate 501, and the first movable folding plate 302 is conveniently disassembled and assembled through the magnetic pad block 304, so as to disassemble the cargo box connecting beam 2 and facilitate maintenance and repair work.

[0057] Working principle: According to the length of the cargo box of the van, select the corresponding number of side cargo box connecting plates 1, insert the side cargo box connecting plates 1 on the outside of the cargo box, and conveniently connect the two adjacent side cargo box connecting plates 1 through the connecting frame 4 through the integrally formed connecting notch 101, insert the cargo box connecting crossbeam 2 into the positioning socket 104, clamp the through-head 203 into the side cargo box connecting plate 1, insert the upper retainer 3 and the lower retainer 5 into the anti-slip notch 204 outside the cargo box connecting crossbeam 2, and connect the two side cargo box connecting plates 1 to the cargo box. The connecting frame 4 is inserted between the connecting plates 1 and is clamped in the connecting groove 101 by the locking frame 401. The two connecting frames 4 are fixed by the clamping frame 402. After the fixing of the connecting frames 4 is completed, the position between the upper retaining frame 3 and the lower retaining frame 5 and the connecting frame 4 is maintained by covering the first movable folding plate 302 and the second movable folding plate 501. The first movable folding plate 302 is conveniently disassembled and assembled by the magnetic pad block 304, so as to disassemble the cargo box connecting beam 2 and facilitate maintenance and repair work.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A cargo box cross beam connection assembly for improving the stability of a van, comprising a side cargo box connection plate (1) and a cargo box connection cross beam (2), characterized in that: The cargo box connecting crossbeam (2) passes through the side cargo box connecting plate (1) and is arranged in the middle of the side cargo box connecting plate (1); Two side cargo box connecting plates (1) are provided, a connecting frame (4) is installed between the two side cargo box connecting plates (1), and the connecting frame (4) is embedded between the two side cargo box connecting plates (1) and is engaged with the side cargo box connecting plates (1); An upper retaining frame (3) and a lower retaining frame (5) are respectively installed above and below the cargo box connecting crossbeam (2); the upper retaining frame (3) and the lower retaining frame (5) are embedded in the upper and lower ends of the cargo box connecting crossbeam (2) and are engaged with the cargo box connecting crossbeam (2).

2. A cargo box cross beam connection assembly for improving the stability of a van according to claim 1, characterized in that: Both sides of the exterior of the side cargo box connecting plate (1) are provided with integrally formed connecting notches (101), and both sides of the side cargo box connecting plate (1) are provided with integrally formed combined surfaces (103), one end of the connecting frame (4) is provided with a locking frame (401), the locking frame (401) is welded to the connecting frame (4), and the locking frame (401) is embedded in the connecting notch (101) to mesh the combined surfaces (103) of the two side cargo box connecting plates (1).

3. The cargo box cross beam connection assembly for improving the stability of a van according to claim 1, characterized in that: The upper and lower ends of the side cargo box connecting plate (1) are both provided with integrally formed positioning and mounting grooves (102), and the positioning and mounting grooves (102) are used to fix the side cargo box connecting plate (1) and the bottom of the cargo box of the van.

4. The cargo box cross beam connection assembly for improving the stability of a van according to claim 2, characterized in that: An integrally formed positioning socket (104) is provided in the middle of the side cargo box connecting plate (1), an integrally formed H-shaped steel groove (201) is provided in the interior of the cargo box connecting cross beam (2), and integrally formed through-holes (203) are provided at both ends of the cargo box connecting cross beam (2), and the through-holes (203) pass through the positioning socket (104) and are engaged with the side cargo box connecting plate (1).

5. The cargo box cross beam connection assembly for improving the stability of a van according to claim 4, characterized in that: The inner center of the cargo box connecting crossbeam (2) is provided with a plurality of integrally formed through holes (202), and the through holes (202) are used to install steel bars to support the cargo box connecting crossbeam (2). The outer part of the cargo box connecting crossbeam (2) is provided with an integrally formed anti-skid groove (204), and both ends of the upper retaining frame (3) and the lower retaining frame (5) are embedded in the anti-skid groove (204) and engaged with the cargo box connecting crossbeam (2) through the anti-skid groove (204).

6. The cargo box cross beam connection assembly for improving the stability of a van according to claim 5, characterized in that: The upper end of the upper retaining frame (3) and the lower end of the lower retaining frame (5) are both provided with an integrally formed limiting block (301), and the outside of the connecting frame (4) penetrates the limiting block (301) and is engaged with the upper retaining frame (3) and the lower retaining frame (5).

7. A cargo box cross beam connection assembly for improving the stability of a van according to claim 6, characterized in that: A first movable folding plate (302) is installed at the upper end of the limit block (301) of the upper retaining frame (3), and a magnetic pad (304) is provided at one end of the first movable folding plate (302). The magnetic pad (304) is used to attract the limit block (301) and the first movable folding plate (302).

8. The cargo box cross beam connection assembly for improving the stability of a van according to claim 7, characterized in that: A second movable folding plate (501) is installed at the lower end of the limiting block (301) of the lower retaining frame (5); one end of the second movable folding plate (501) and the first movable folding plate (302) are both installed with a spring locking shaft (305); the second movable folding plate (501) and the first movable folding plate (302) are both movably connected to the limiting block (301) via the spring locking shaft (305); the other end of the second movable folding plate (501) is fixedly connected to the limiting block (301) via a buckle.

9. The cargo box cross beam connection assembly for improving the stability of a van according to claim 8, characterized in that: The limiting block (301) is provided with an integrally formed positioning slot (303) inside, the outside of the connecting frame (4) is inserted into the positioning slot (303) and is engaged with the limiting block (301), a clamping frame (402) is installed at the rear end of the connecting frame (4), the clamping frame (402) is fixedly connected to the two side cargo box connecting plates (1) through a buckle, and the outside of the clamping frame (402) is provided with an integrally formed locking slot (403), and the rear end of the connecting frame (4) is engaged with the clamping frame (402) through the locking slot (403).

10. A method for installing a cargo box cross beam connection assembly for improving the stability of a van according to claim 9, characterized in that: The steps include: Step 1: Select a corresponding number of side cargo box connecting plates (1) according to the length of the cargo box of the van, and insert the side cargo box connecting plates (1) on the outer side of the cargo box; Step 2: Insert the cargo box connecting beam (2) into the positioning socket (104), and clamp the penetration head (203) into the side cargo box connecting plate (1); Step 3: Insert the upper retaining frame (3) and the lower retaining frame (5) into the anti-slip groove (204) outside the cargo box connecting beam (2), insert the connecting frame (4) between the two side cargo box connecting plates (1), clamp the locking frame (401) in the connecting groove (101), and fix the two connecting frames (4) by the clamping frame (402); Step 4: After the connection frame (4) is fixed, the position between the upper retaining frame (3) and the lower retaining frame (5) and the connection frame (4) is maintained by covering the first movable folding plate (302) and the second movable folding plate (501).

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