Assembly type turnover box with cover

Abstract

The utility model discloses an assembly type turnover box with a cover, which is used for realizing that the whole turnover box is detachable, the surface of the turnover box is provided with a protective cover, and the problems that large space is wasted when an empty box is transported and comprehensive protection cannot be provided when valuables are loaded are solved. Comprising a bottom plate assembly, a long side wall plate, a short side wall plate and a box cover assembly. The long side wall plate comprises a long side wall plate frame, a connecting seat, a first panel, a buckle seat and a buckle ring; the first panel and the connecting seat are arranged on the long side wall plate frame, and a first clamping groove is formed in the connecting seat. The lower end of the long side wall plate frame is in threaded connection with the bottom plate assembly; the buckle seat is arranged on the first panel; the short side wall plate comprises a short side wall plate frame, a connecting plate and a second panel; the second panel and the connecting plate are both arranged on the short side wall plate frame, the connecting plate is inserted into the first clamping groove of the connecting seat, and the lower end of the short side wall plate frame is in threaded connection with the bottom plate assembly; the box cover assembly comprises a box cover panel, a box cover frame and hanging lugs. And the hanging lug is connected with the buckle ring of the long side wall plate.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to an assembled covered turnover box. Background Technology

[0002] Turnover boxes are mainly used for the warehousing and logistics of loose items. They are simple in structure, easy to use, stack neatly, and easy to manage, and are widely used in industries such as machinery, automobiles, home appliances, light industry, and electronics. Currently, most of the boxes used on the market are non-detachable, one-piece molded containers, which result in significant space waste when transporting empty boxes. Furthermore, turnover boxes lack lids, failing to provide comprehensive protection when carrying valuable items. Utility Model Content

[0003] In view of this, the present utility model discloses an assembled covered turnover box, the specific solution of which is as follows:

[0004] An assembled covered turnover box includes a base plate assembly, long side wall panels, short side wall panels, and a box cover assembly;

[0005] The long side wall panel includes a long side wall panel frame, a connecting seat, a first panel, a buckle seat, and a buckle ring; the first panel and the connecting seat are both disposed on the long side wall panel frame, and the connecting seat is provided with a first slot; the lower end of the long side wall panel frame is screwed to the bottom plate assembly; the buckle seat is disposed on the first panel, and the buckle seat is provided with a buckle ring;

[0006] The short side wall panel includes a short side wall panel frame, a connecting plate, and a second panel; the second panel and the connecting plate are both disposed on the short side wall panel frame, the connecting plate is inserted into the first slot of the connecting seat on the long side wall panel, and the lower end of the short side wall panel frame is screwed to the bottom plate assembly.

[0007] The long side wall panel and the short side wall panel are each provided in two sets. The long side wall panel, the short side wall panel and the bottom plate assembly together form an accommodating chamber with an opening at the top.

[0008] The lid assembly includes a lid panel, a lid frame, and a hanging lug; the lid panel and the hanging lug are both mounted on the lid frame, and the hanging lug is connected to the buckle ring of the long side wall panel.

[0009] As a supplement to the technical solution of this utility model, the long side wall panel frame includes a first column, a first frame, and a first reinforcing beam. The first column is arranged vertically, the first frame is arranged horizontally, and the first column and the first frame form a square frame structure. The upper and lower ends of the first reinforcing beam are connected to the first frame. Each of the two sets of first columns is provided with a connecting seat, and the first panel is connected to the first column, the first frame, and the first reinforcing beam respectively.

[0010] As a supplement to the technical solution of this utility model, the short side wall panel includes a second column, a second frame, and a second reinforcing beam; the second column is arranged vertically, the second frame is arranged horizontally, and the second column and the second frame form a square frame structure; the upper and lower ends of the second reinforcing beam are connected to the second frame, and a connecting plate is provided on both sets of second columns; the second panel is connected to the second column, the second frame, and the first reinforcing beam respectively.

[0011] As a supplement to the technical solution of this utility model, each group of first columns is provided with at least two sets of connecting seats, and each group of second columns is provided with at least two sets of connecting plates.

[0012] As a supplement to the technical solution of this utility model, the connecting seat is an L-shaped structure, including a first fixed seat and a limiting plate. The limiting plate is disposed at the end of the first fixed seat, and the fixed seat and the limiting plate are perpendicular to each other. A first slot extending downward from the upper end of the first fixed seat is provided on the first fixed seat. The first fixed seat is riveted to the first column.

[0013] The connecting plate has an L-shaped structure, including a second fixing seat and a plug-in plate. The plug-in plate is disposed at the end of the second fixing seat. The second fixing seat and the plug-in plate are perpendicular to each other. The second fixing seat is riveted to the second column. The plug-in plate is perpendicular to the first fixing seat. The plug-in plate is provided with a second slot extending upward from its lower end. When the connecting plate is connected to the connecting seat, the second slot on the plug-in plate is opposite to the first slot on the first fixing seat, and the plug-in plate is plugged into the first fixing seat.

[0014] As a supplement to the technical solution of this utility model, the base plate assembly includes a base plate frame, a large support leg, a small support leg, and a base plate. The base plate frame is a square frame structure. The large support leg and the small support leg are both located at the lower end of the base plate frame, and the base plate is located on the base plate frame.

[0015] The base plate is assembled from several base plate profiles, including an upper base plate, a lower base plate, a first vertical rib, and a second vertical rib. The upper base plate is positioned above the lower base plate, and a reinforcing rib is provided between the upper base plate and the lower base plate.

[0016] The upper and lower base plates are staggered, such that the left end of the upper base plate is located to the left of the left end of the lower base plate, and the right end of the lower base plate is located to the right of the right end of the upper base plate; in two adjacent sets of first base plate profiles, the right end of the upper base plate of the left first base plate profile abuts against the left end of the upper base plate of the right first base plate profile, and the right end of the lower base plate of the left first base plate profile abuts against the left end of the lower base plate of the left first base plate profile.

[0017] The upper end of the first vertical rib is connected to the left end of the upper base plate, and the lower end is connected to the left end of the lower base plate. The first vertical rib is provided with a protrusion that protrudes to the left.

[0018] The upper end of the second vertical rib is connected to the right end of the upper base plate, and the lower end is connected to the right end of the lower base plate. The second vertical rib is provided with a recessed part that is recessed to the left.

[0019] In two adjacent sets of first base plate profiles, the protrusion of the first vertical rib of the first base plate profile on the right is inserted into the recess of the second vertical rib of the first base plate profile on the left.

[0020] As a supplement to the technical solution of this utility model, the base plate assembly also includes a limiting profile. The limiting profile is provided in four sets, which are respectively vertically arranged at the four corners of the base plate frame. The limiting profile has an L-shaped cross-section, including a first side and a second side that are perpendicular to each other. The first side of the limiting profile abuts against the first panel of the long side wall plate, and the second side of the limiting profile abuts against the second panel of the short side wall plate.

[0021] Beneficial effects: This utility model, through the design of the cover plate assembly, avoids the technical problem of not being able to provide comprehensive protection when loading valuable items. In another aspect of this utility model, the long side wall panel, the short side wall panel, and the bottom plate assembly are all detachably connected. Furthermore, the long side wall panel and the short side wall panel are connected by a connecting seat and a connecting plate, enabling the long side wall panel, the short side wall panel, and the bottom plate assembly to be detachable. The long side wall panel and the short side wall panel are only connected by a plug-in connection, which improves assembly speed and facilitates disassembly. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the box cover assembly of this utility model.

[0025] Figure 4 This is a schematic diagram of the short side wall panel structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the long side wall panel structure of this utility model.

[0027] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Figure 7 This is a schematic diagram of the assembly structure of the short side wall panel and the long side wall panel of this utility model.

[0029] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point B.

[0030] Figure 9This is a schematic diagram of the base plate assembly structure of this utility model.

[0031] Figure 10 This is a schematic diagram of the base plate assembly structure of this utility model.

[0032] Figure 11 This is a schematic diagram of the base plate structure of this utility model.

[0033] Figure 12 This is a schematic diagram of the base plate profile structure of this utility model.

[0034] Figure 13 This is a schematic diagram of the assembly structure of the buckle seat, buckle ring, and hanging ear of this utility model.

[0035] In the diagram: 1. Base plate assembly, 2. Long side wall panel, 3. Short side wall panel, 4. Cover assembly, 5. Long side wall panel frame, 6. Connecting seat, 7. First panel, 8. Buckle seat, 9. Buckle ring, 10. Short side wall panel frame, 11. Connecting plate, 12. Second panel, 13. Cover panel, 14. Cover frame, 15. Hanging lug, 16. First upright, 17. First frame, 18. First reinforcing beam, 19. Second upright, 20. Second frame, 21. Second reinforcing beam, 22. First fixing seat, 23. Limiting plate, 24. Second fixing seat, 25. Insertion plate, 26. Base plate frame, 27. Large support leg, 28. Small support leg, 29. Base plate profile, 30. Upper base plate, 31. Lower base plate, 32. First vertical rib, 33. Second vertical rib, 34. Limiting profile. Detailed Implementation

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] like Figures 1 to 13As shown, an assembled covered turnover box is used to realize the overall detachability of the turnover box, which includes a bottom plate assembly 1, a long side wall panel 2, a short side wall panel 3, and a box cover assembly 4.

[0039] The long side wall panel 2 includes a long side wall panel frame 5, a connecting seat 6, a first panel 7, a buckle seat 8, and a buckle ring 9.

[0040] The first panel 7 is disposed on the long side wall panel frame 5, and the long side wall panel frame 5 is provided with a connecting seat 6, which has a first slot. The connecting seat 6 is disposed on the side of the long side wall panel frame 5 and is used to connect with the short side wall panel 3. The lower end of the long side wall panel frame 5 is screwed to the base plate assembly 1, so that the long side wall panel 2 and the base plate assembly 1 are detachably connected. The buckle seat 8 is disposed on the first panel 7, and the buckle ring 9 is disposed on the buckle seat 8. The buckle is used to connect with the box lid.

[0041] The short side wall panel 3 includes a short side wall panel frame 10, a connecting plate 11, and a second panel 12;

[0042] The second panel 12 is disposed on the short side wall panel frame 10. The short side wall panel frame 10 is provided with a connecting plate 11. The connecting plate 11 is disposed on the side of the short side wall panel frame 10, so that when the long side wall panel 2 and the short side wall panel 3 are installed, the connecting plate 11 of the short side wall panel 3 can smoothly contact and connect with the connecting seat 6 of the long side wall panel 2.

[0043] The connecting plate 11 is inserted into the first slot of the connecting seat 6 on the long side wall plate 2, and the lower end of the frame 10 of the short side wall plate is screwed to the base plate assembly 1, so that the short side wall plate 3 and the base plate assembly 1 can be detachably connected.

[0044] The long side wall panel 2 and the short side wall panel 3 are each provided in two sets. The long side wall panel 2, the short side wall panel 3 and the bottom plate assembly 1 together form an opening at the top for storing goods.

[0045] The box cover assembly 4 includes a box cover panel 13, a box cover frame 14, and a hanging lug 15.

[0046] The lid panel 13 is disposed on the lid frame 14, the hanging ear 15 is disposed on the lid frame 14, and the hanging ear 15 is connected to the buckle ring 9 of the long side wall panel 2, so as to realize the detachable connection between the lid assembly 4 and the long side wall panel 2.

[0047] Through the above configuration, the long side wall panel 2, short side wall panel 3, bottom plate assembly 1, and lid assembly 4 are assembled into a complete turnover box, and all components are detachable, allowing for replacement in case of damage to any local component. Furthermore, when transporting empty boxes, the components can be disassembled and stacked for transport, reducing space waste. When loaded with goods, the lid protects the goods, preventing damage to valuable items from collisions.

[0048] As a preferred embodiment of this utility model, the long side wall panel frame 5 includes a first column 16, a first frame 17, and a first reinforcing beam 18. The first column 16 is vertically arranged, and the first frame 17 is horizontally arranged, forming a square frame structure. The first reinforcing beam is vertically arranged, with its upper and lower ends connected to the first frame 17. Each of the two sets of first columns 16 is provided with a connecting seat 6. The first panel 7 is connected to the first column 16, the first frame 17, and the first reinforcing beam 18, including but not limited to welding, screwing, and riveting connections.

[0049] As a supplement to the above technical solution, each set of long side wall panels 2 frames is provided with two sets of first reinforcing beams 18. The structural stability of the long side wall panel frame 5 is improved by setting the first reinforcing beams 18.

[0050] As a preferred embodiment of this invention, the short sidewall panel 3 includes a second column 19, a second frame 20, and a second reinforcing beam 21. The second column 19 is vertically arranged, and the second frame 20 is horizontally arranged, forming a square frame structure. The second reinforcing beam 21 is vertically arranged, with its upper and lower ends connected to the second frame 20. Each of the two sets of second columns 19 is equipped with a connecting plate 11. The second panel 12 is connected to the second column 19, the second frame 20, and the first reinforcing beam 18, including but not limited to welding, screwing, and riveting. The second reinforcing beam 21 enhances the structural stability of the long sidewall panel frame 5.

[0051] Both ends of the long side wall panel 2 are provided with connecting seats 6, and both ends of the short side wall panel 3 are provided with connecting plates 11, thereby improving the connection strength between the long side wall panel 2 and the short side wall panel 3.

[0052] As a supplement to the above technical solution, in order to further ensure the connection strength and stability between the long side wall panel 2 and the short side wall panel 3, at least two sets of connecting seats 6 are provided on each group of first columns 16, and at least two sets of connecting plates 11 are provided on each group of second columns 19.

[0053] As a preferred embodiment of this utility model, the connecting seat 6 has an L-shaped structure, including a first fixing seat 22 and a limiting plate 23. The first fixing seat 22 is disposed on the first column 16. Both the first fixing seat 22 and the limiting plate 23 are plate-shaped structures. The limiting plate 23 is disposed at the end of the first fixing seat 22, and the fixing seat and the limiting plate 23 are perpendicular to each other. A first slot extending downward from the upper end of the first fixing seat 22 is provided on the first fixing seat 22. The first fixing seat 22 is riveted to the first column 16.

[0054] The connecting plate 11 has an L-shaped structure, including a second fixing seat 24 and a plug-in plate 25. Both the second fixing seat 24 and the plug-in plate 25 are plate-shaped structures. The plug-in plate 25 is disposed at the end of the second fixing seat 24, and the second fixing seat 24 and the plug-in plate 25 are arranged perpendicularly to each other. The second fixing seat 24 is riveted to the second column 19, and the plug-in plate 25 is arranged perpendicularly to the first fixing seat 22. The plug-in plate 25 has a second slot extending upward from its lower end. When the connecting plate 11 is connected to the connecting seat 6, the second slot on the plug-in plate 25 is aligned with the first slot on the first fixing seat 22, so that the plug-in plate 25 is connected to the first fixing seat 22. The limiting plate 23 of the first fixing seat 22 is used to limit the sliding of the plug-in plate 25 along the length direction of the first fixing seat 22, further preventing the two from separating. Through the above arrangement, a detachable connection between the long side wall panel 2 and the short side wall panel 3 is achieved. Compared with the traditional method of riveting the two with L-shaped corner pieces, the installation is more convenient and the disassembly is easier.

[0055] As a preferred technical solution of this utility model, the base plate assembly 1 includes a base plate frame 26, a large support leg 27, a small support leg 28, and a base plate. The base plate frame 26 is a square frame structure. The large support leg 27 and the small support leg 28 are both located at the lower end of the base plate frame 26, and the base plate is located inside the base plate frame 26. The base plate is assembled from several base plate profiles 29. Each base plate profile 29 includes an upper base plate 30 and a lower base plate 31. The upper base plate 30 is positioned above the lower base plate 31. Vertical reinforcing ribs are provided between the upper base plate 30 and the lower base plate 31. The upper base plate 30 and the lower base plate 31 are staggered, such that the left end of the upper base plate 30 is located to the left of the left end of the lower base plate 31, and the right end of the lower base plate 31 is located to the right of the right end of the upper base plate 30. In two adjacent sets of base plate profiles 29, the right end of the upper base plate 30 of the base plate profile 29 abuts against the left end of the upper base plate 30 of the first base plate profile 29 on the right, and the right end of the lower base plate 31 of the first base plate profile 29 on the left abuts against the left end of the lower base plate 31 of the first base plate profile 29 on the left.

[0056] The base plate profile 29 further includes a first vertical rib 32 and a second vertical rib 33. The upper end of the first vertical rib 32 is connected to the left end of the upper base plate 30, and the lower end of the first vertical rib 32 is connected to the left end of the lower base plate 31. The first vertical rib 32 has a protrusion extending to the left. The second vertical rib 33 is vertically arranged and has a recessed portion extending to the left in the middle. The upper end of the second vertical rib 33 is connected to the right end of the upper base plate 30, and the lower end is connected to the lower base plate 31. In two adjacent sets of base plate profiles 29, the protrusion of the first vertical rib 32 of the right base plate profile 29 is inserted into the recess of the second vertical rib 33 of the left base plate profile 29. Through the above arrangement, two adjacent sets of base plate profiles 29 can be inserted and connected, and the lower base plate 31 protruding to the right of the second vertical rib 33 can help position and quickly install the next set of base plate profiles 29.

[0057] As a preferred embodiment of this utility model, the base plate assembly 1 further includes limiting profiles 34. Four sets of limiting profiles 34 are vertically positioned at the four corners of the base plate frame 26. Each limiting profile 34 has an L-shaped cross-section, including a first side and a second side that are perpendicular to each other. The first side of the limiting profile 34 abuts against the first panel 7, and the second side abuts against the second panel 12. The limiting profiles 34 enhance the connection stability between the long side wall panel 2, the short side wall panel 3, and the base plate assembly 1.

[0058] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the protection scope of the present invention.

Claims

1. A prefabricated, covered turnover box, characterized in that, Includes base plate assembly (1), long side wall panel (2), short side wall panel (3), and box cover assembly (4); The long side wall panel (2) includes a long side wall panel frame (5), a connecting seat (6), a first panel (7), a buckle seat (8), and a buckle ring (9); the first panel (7) and the connecting seat (6) are both disposed on the long side wall panel frame (5), and the connecting seat (6) is provided with a first slot; the lower end of the long side wall panel frame (5) is screwed to the bottom plate assembly (1); the buckle seat (8) is disposed on the first panel (7), and the buckle seat (8) is provided with a buckle ring (9); The short side wall panel (3) includes a short side wall panel frame (10), a connecting plate (11), and a second panel (12); the second panel (12) and the connecting plate (11) are both disposed on the short side wall panel frame (10), the connecting plate (11) is inserted into the first slot of the connecting seat (6) on the long side wall panel (2), and the lower end of the short side wall panel frame (10) is screwed to the bottom plate assembly (1); The long side wall panel (2) and the short side wall panel (3) are each provided in two sets. The long side wall panel (2), the short side wall panel (3) and the bottom plate assembly (1) together form an accommodating chamber with an opening at the top. The box cover assembly (4) includes a box cover panel (13), a box cover frame (14), and a hanging ear (15); the box cover panel (13) and the hanging ear (15) are both set on the box cover frame (14), and the hanging ear (15) is connected to the buckle ring (9) of the long side wall panel (2).

2. The assembled covered turnover box according to claim 1, characterized in that, The long side wall panel frame (5) includes a first column (16), a first frame (17), and a first reinforcing beam (18). The first column (16) is set vertically, and the first frame (17) is set horizontally. The first column (16) and the first frame (17) together form a square frame structure. The upper and lower ends of the first reinforcing beam are connected to the first frame (17). Each of the two sets of first columns (16) is provided with a connecting seat (6). The first panel (7) is connected to the first column (16), the first frame (17), and the first reinforcing beam (18) respectively.

3. The assembled covered turnover box according to claim 2, characterized in that, The short side wall panel (3) includes a second column (19), a second frame (20), and a second reinforcing beam (21); the second column (19) is set vertically, the second frame (20) is set horizontally, the second column (19) and the second frame (20) together form a square frame structure, the upper and lower ends of the second reinforcing beam (21) are connected to the second frame (20), and each of the two sets of second columns (19) is provided with a connecting plate (11); the second panel (12) is connected to the second column (19), the second frame (20), and the first reinforcing beam (18) respectively.

4. The assembled covered turnover box according to claim 3, characterized in that, Each first column (16) has at least two sets of connecting seats (6), and each second column (19) has at least two sets of connecting plates (11).

5. A prefabricated covered turnover box according to claim 1, characterized in that, The connecting seat (6) has an L-shaped structure, including a first fixing seat (22) and a limiting plate (23). The limiting plate (23) is located at the end of the first fixing seat (22), and the fixing seat and the limiting plate (23) are perpendicular to each other. The first fixing seat (22) has a first slot extending downward from the upper end of the first fixing seat (22). The first fixing seat (22) is riveted to the first column (16). The connecting plate (11) has an L-shaped structure, including a second fixing seat (24) and a plug-in plate (25). The plug-in plate (25) is disposed at the end of the second fixing seat (24). The second fixing seat (24) and the plug-in plate (25) are perpendicular to each other. The second fixing seat (24) is riveted to the second column (19). The plug-in plate (25) is perpendicular to the first fixing seat (22). The plug-in plate (25) is provided with a second slot extending upward from its lower end. When the connecting plate (11) is connected to the connecting seat (6), the second slot on the plug-in plate (25) is opposite to the first slot on the first fixing seat (22), and the plug-in plate (25) is plugged into the first fixing seat (22).

6. A prefabricated covered turnover box according to claim 1, characterized in that, The base plate assembly (1) includes a base plate frame (26), a large support leg (27), a small support leg (28), and a base plate. The base plate frame (26) is a square frame structure. The large support leg (27) and the small support leg (28) are both located at the lower end of the base plate frame (26), and the base plate is located on the base plate frame (26). The base plate is assembled from several base plate profiles (29). The base plate profiles (29) include an upper base plate (30), a lower base plate (31), a first vertical rib (32), and a second vertical rib (33). The upper base plate (30) is located above the lower base plate (31), and a reinforcing rib is provided between the upper base plate (30) and the lower base plate (31). The upper base plate (30) and the lower base plate (31) are staggered, such that the left end of the upper base plate (30) is located to the left of the left end of the lower base plate (31), and the right end of the lower base plate (31) is located to the right of the right end of the upper base plate (30); in two adjacent sets of first base plate profiles (29), the right end of the upper base plate (30) of the left first base plate profile (29) abuts against the left end of the upper base plate (30) of the right first base plate profile (29), and the right end of the lower base plate (31) of the left first base plate profile (29) abuts against the left end of the lower base plate (31) of the left first base plate profile (29); The upper end of the first vertical rib (32) is connected to the left end of the upper base plate (30), and the lower end is connected to the left end of the lower base plate (31). The first vertical rib (32) is provided with a protrusion that protrudes to the left. The upper end of the second vertical rib (33) is connected to the right end of the upper base plate (30), and the lower end is connected to the right end of the lower base plate (31). The second vertical rib (33) is provided with a recessed part that is recessed to the left. In the two adjacent sets of first base plate profiles (29), the protrusion of the first vertical rib (32) of the first base plate profile (29) on the right is inserted into the recess of the second vertical rib (33) of the first base plate profile (29) on the left.

7. A prefabricated covered turnover box according to claim 3, characterized in that, The base plate assembly (1) also includes a limiting profile (34). The limiting profile (34) has four sets, which are vertically arranged at the four corners of the base plate frame (26). The limiting profile (34) has an L-shaped cross section, including a first side and a second side that are perpendicular to each other. The first side of the limiting profile (34) abuts against the first panel (7) of the long side wall plate (2), and the second side of the limiting profile (34) abuts against the second panel (12) of the short side wall plate (3).

Images