Combined clamping plate

By using a combination of support columns, connecting columns, and waterproof sleeves, the design of the modular pallet solves the problems of pallet disassembly and waterproofing, enabling convenient disassembly and use in humid environments, thus improving the pallet's applicability and transportation convenience.

CN223764969UActive Publication Date: 2026-01-06DONGGUAN SANSIDE STORAGE EQUIP CO LTD
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Patent Information

Application Number
CN202520301956.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2026-01-06
Estimated Expiration
2035-02-25

AI Technical Summary

Technical Problem

The existing pallet structure is integrated and cannot be repaired or partially replaced. It is also easily damaged when used on damp or wet surfaces, affecting its performance.

Method used

It adopts a modular design, including support columns, connecting columns, panels and waterproof sleeves. The combination of limiting strips and waterproof sleeves enables the plate to be detachable and waterproof.

Benefits of technology

Simple to assemble, easy to disassemble and replace, suitable for damp or wet ground, improving the pallet's applicability and transportation convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a combined type cardboard which comprises a supporting assembly, a connecting assembly, a panel assembly, a limiting strip and a waterproof sleeve plate, the connecting assembly and the panel assembly are installed on the supporting assembly, the limiting strip and the waterproof sleeve plate are installed on the supporting assembly, the supporting assembly comprises a first supporting column, a second supporting column and a third supporting column, and the connecting assembly comprises a first connecting column, a second connecting column and a third connecting column. The panel assembly comprises a first panel, a second panel and a third panel, the first supporting column, the second supporting column and the third supporting column are connected through the first connecting column, the second connecting column and the third connecting column, and the first panel, the second panel and the third panel are detachably installed on the first supporting column, the second supporting column and the third supporting column. The multiple limiting strips and the multiple waterproof sleeve plates are arranged at intervals, the bottoms of the first supporting column, the second supporting column and the third supporting column are all sleeved with the waterproof sleeve plates, the waterproof sleeve plates are provided with sleeve grooves, and the bottoms of the first supporting column, the second supporting column and the third supporting column are all in interference fit with the sleeve grooves.
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Description

Technical Field

[0001] This utility model relates to the field of cardboard technology, and more particularly to a combined cardboard. Background Technology

[0002] Pallets, also known as crates, are essential load-bearing structures for packaging large goods. They require not only high load-bearing capacity but also minimal weight to reduce transportation costs. Currently, paper pallets are widely used due to their light weight, environmental friendliness, and lower cost. Existing pallets are mostly constructed from a single piece or assembled from upper and lower components. This makes them difficult to repair or partially replace after damage, and also inconvenient for transportation. Furthermore, existing pallets are susceptible to water erosion at the bottom when used on damp or wet surfaces, affecting their usability. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a modular pallet, which is assembled from a first support column, a second support column, a third support column, a first connecting column, a second connecting column, a third connecting column, a first panel, a second panel, a third panel, a limiting strip, and a waterproof sleeve. The assembly is simple and convenient, and it is easy to disassemble and replace, which is beneficial for transportation. It is also waterproof and can be used on damp or wet surfaces, making it highly versatile.

[0004] To achieve the above objectives, the present invention provides a modular card plate, comprising a support assembly, a connecting assembly and a panel assembly mounted on the support assembly, a limiting strip and a waterproof sleeve mounted on the support assembly. The support assembly includes a first support column, a second support column, and a third support column. The connecting assembly includes a first connecting column, a second connecting column, and a third connecting column. The panel assembly includes a first panel, a second panel, and a third panel. The first support column, the second support column, and the third support column are connected by the first connecting column, the second connecting column, and the third connecting column. The first panel, the second panel, and the third panel are detachably mounted on the first support column, the second support column, and the third support column. Multiple limiting strips and waterproof sleeves are provided and spaced apart. A waterproof sleeve is fitted onto the bottom of each of the first support column, the second support column, and the third support column. The waterproof sleeve has a groove, and the bottom of each of the first support column, the second support column, and the third support column is interference-fitted with the groove. The support assembly and the panel assembly are limited by the limiting strip.

[0005] As a preferred embodiment, the first support column is provided with a first front connecting groove, the second support column is provided with a second front connecting groove, and the third support column is provided with a third front connecting groove. The first front connecting groove, the second front connecting groove, and the third front connecting groove are matched with each other. One end of the first connecting column is installed in the first front connecting groove, the other end of the first connecting column is installed in the third front connecting groove, and the middle part of the first connecting column is installed in the second front connecting groove.

[0006] As a preferred embodiment, the first support column is provided with a first connecting groove, the second support column is provided with a second connecting groove, and the third support column is provided with a third connecting groove. The first connecting groove, the second connecting groove, and the third connecting groove are matched with each other. One end of the second connecting column is installed in the first connecting groove, the other end of the second connecting column is installed in the third connecting groove, and the middle part of the second connecting column is installed in the second connecting groove.

[0007] As a preferred embodiment, the first support column is provided with a first rear connecting groove, the second support column is provided with a second rear connecting groove, and the third support column is provided with a third rear connecting groove. The first rear connecting groove, the second rear connecting groove, and the third rear connecting groove are matched with each other. One end of the third connecting column is installed in the first rear connecting groove, the other end of the third connecting column is installed in the third rear connecting groove, and the middle part of the third connecting column is installed in the second rear connecting groove.

[0008] As a preferred embodiment, the first support column is provided with a first front mounting groove, the second support column is provided with a second front mounting groove, the third support column is provided with a third front mounting groove, the first connecting column is provided with a first front placement groove, a first middle placement groove and a first rear placement groove, the first panel has a first front mounting column, a first middle mounting column and a first rear mounting column, the first front mounting column passes through the first front mounting groove and is installed in the first front placement groove, the first middle mounting column passes through the first middle mounting groove and is installed in the first middle placement groove, and the first rear mounting column passes through the first rear mounting groove and is installed in the first rear placement groove.

[0009] As a preferred embodiment, the first support column is provided with a first middle mounting groove, the second support column is provided with a second middle mounting groove, the third support column is provided with a third middle mounting groove, the second connecting column is provided with a second front placement groove, a second middle placement groove and a second rear placement groove, the second panel has a second front mounting column, a second middle mounting column and a second rear mounting column, the second front mounting column passes through the first middle mounting groove and is installed in the second front placement groove, the second middle mounting column passes through the second middle mounting groove and is installed in the second middle placement groove, and the second rear mounting column passes through the second rear mounting groove and is installed in the second rear placement groove.

[0010] As a preferred embodiment, the first support column is provided with a first rear mounting groove, the second support column is provided with a second rear mounting groove, the third support column is provided with a third rear mounting groove, the third connecting column is provided with a third front placement groove, a third middle placement groove and a third rear placement groove, and the third panel has a third front mounting column, a third middle mounting column and a third rear mounting column. The third front mounting column passes through the first rear mounting groove and is installed in the third front placement groove, the third middle mounting column passes through the second rear mounting groove and is installed in the third middle placement groove, and the third rear mounting column passes through the third rear mounting groove and is installed in the third rear placement groove.

[0011] As a preferred embodiment, the first support column is provided with a first positioning groove, the first front mounting column is provided with a first front limiting groove, the second front mounting column is provided with a second front limiting groove, and the third front mounting column is provided with a third front limiting groove. The first front mounting groove, the first middle mounting groove, the first rear mounting groove, the first front limiting groove, the second front limiting groove, and the third front limiting groove are all connected to the first positioning groove. One end of the limiting strip passes through the first positioning groove, the first front limiting groove, the second front limiting groove, and the third front limiting groove in sequence.

[0012] As a preferred embodiment, the second support column is provided with a second positioning groove, the first middle mounting column is provided with a first middle limiting groove, the second middle mounting column is provided with a second middle limiting groove, and the third middle mounting column is provided with a third middle limiting groove. The second front mounting groove, the second middle mounting groove, the second rear mounting groove, the first middle limiting groove, the second middle limiting groove, and the third middle limiting groove are all connected to the second positioning groove. One end of the limiting strip passes through the second positioning groove, the first middle limiting groove, the second middle limiting groove, and the third middle limiting groove in sequence.

[0013] As a preferred embodiment, the third support column is provided with a third positioning groove, the first rear mounting column is provided with a first rear limiting groove, the second rear mounting column is provided with a second rear limiting groove, and the third rear mounting column is provided with a third rear limiting groove. The third front mounting groove, the third middle mounting groove, the third rear mounting groove, the first rear limiting groove, the second rear limiting groove, and the third rear limiting groove are all connected to the third positioning groove. One end of the limiting strip passes through the third positioning groove, the first rear limiting groove, the second rear limiting groove, and the third rear limiting groove in sequence.

[0014] The beneficial effects of this utility model are as follows: the card plate is assembled by setting a first support column, a second support column, a third support column, a first connecting column, a second connecting column, a third connecting column, a first panel, a second panel, a third panel, a limiting strip, and a waterproof sleeve plate. The assembly is simple and convenient, easy to disassemble and replace, and conducive to transportation. It is also waterproof and can be used on damp or wet ground, making it highly applicable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a combined cardboard according to this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of a support component in a modular cardboard.

[0017] Figure 3 for Figure 2 A structural diagram of the supporting component from another angle.

[0018] Figure 4 for Figure 1 A schematic diagram of the connecting components in a modular cardboard.

[0019] Figure 5 for Figure 1 A schematic diagram of the panel assembly in a modular cardboard.

[0020] Reference numerals: 100, Support component; 110, First support column; 111, First front connecting groove; 112, First middle connecting groove; 113, First rear connecting groove; 114, First front mounting groove; 115, First middle mounting groove; 116, First rear mounting groove; 117, First positioning groove; 120, Second support column; 121, Second front connecting groove; 122, Second middle connecting groove; 123, Second rear connecting groove; 124, Second front mounting groove; 125, Second middle mounting groove. 126. Second rear mounting slot; 127. Second positioning slot; 130. Third support post; 131. Third front connecting slot; 132. Third middle connecting slot; 133. Third rear connecting slot; 134. Third front mounting slot; 135. Third middle mounting slot; 136. Third rear mounting slot; 137. Third positioning slot; 200. Connecting assembly; 210. First connecting post; 211. First front placement slot; 212. First middle placement slot; 213. First rear placement slot; 220. Second 221. Connecting post; 222. Second front placement slot; 223. Second middle placement slot; 224. Second rear placement slot; 230. Third connecting post; 231. Third front placement slot; 232. Third middle placement slot; 233. Third rear placement slot; 300. Panel assembly; 310. First panel; 311. First front mounting post; 312. First middle mounting post; 313. First rear mounting post; 314. First front limiting slot; 315. First middle limiting slot; 316. First rear limiting slot; 3 20. Second panel; 321. Second front mounting post; 322. Second middle mounting post; 323. Second rear mounting post; 324. Second front limiting groove; 325. Second middle limiting groove; 326. Second rear limiting groove; 330. Third panel; 331. Third front mounting post; 332. Third middle mounting post; 333. Third rear mounting post; 334. Third front limiting groove; 335. Third middle limiting groove; 336. Third rear limiting groove; 400. Limiting strip; 500. Waterproof sleeve. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1 to 5As shown, this utility model provides a combined card plate, including a support assembly 100, a connecting assembly 200 and a panel assembly 300 installed on the support assembly 100, a limiting strip 400 and a waterproof sleeve 500 installed on the support assembly 100. The support assembly 100 includes a first support column 110, a second support column 120 and a third support column 130. The connecting assembly 200 includes a first connecting column 210, a second connecting column 220 and a third connecting column 230. The panel assembly 300 includes a first panel 310, a second panel 320 and a third panel 330. The first support column 110, the second support column 120 and the third support column 130 are connected by the first connecting column 210, the second connecting column 220 and the third connecting column 230. The first panel 310, the second panel 320 and the third panel 330 are all detachably installed on the first support column 110, the second support column 120 and the third support column 130. 30. Multiple limiting strips 400 and waterproof sleeves 500 are arranged at intervals. The bottom of the first support column 110, the second support column 120 and the third support column 130 are all fitted with waterproof sleeves 500. The waterproof sleeves 500 have grooves. The bottom of the first support column 110, the second support column 120 and the third support column 130 are all interference fit with the grooves. The support assembly 100 and the panel assembly 300 are limited by limiting strips 400. The first support column 110, the second support column 120, the third support column 130, the first connecting column 210, the second connecting column 220, the third connecting column 230, the first panel 310, the second panel 320, the third panel 330, the limiting strips 400 and the waterproof sleeves 500 are assembled into a card plate. The assembly is simple and convenient, easy to disassemble and replace, and convenient for transportation. It is also waterproof and can be used on damp or wet ground, making it highly applicable.

[0025] In this embodiment, the first support column 110, the second support column 120, the third support column 130, the first connecting column 210, the second connecting column 220, the third connecting column 230, the first panel 310, the second panel 320, the third panel 330, the limiting strip 400, and the waterproof sleeve 500 are all made of paper material.

[0026] In this embodiment, waterproof paper is adhered to the outer surface of the waterproof sleeve 500, giving the waterproof sleeve 500 excellent waterproof performance. Since the bottoms of the first support column 110, the second support column 120, and the third support column 130 are all interference-fitted with the sleeve groove, the waterproof sleeve 500 can be stably installed at the bottoms of the first support column 110, the second support column 120, and the third support column 130.

[0027] The first support column 110 is provided with a first front connecting groove 111, the second support column 120 is provided with a second front connecting groove 121, and the third support column 130 is provided with a third front connecting groove 131. The first front connecting groove 111, the second front connecting groove 121 and the third front connecting groove 131 are matched with each other. One end of the first connecting column 210 is installed in the first front connecting groove 111, the other end of the first connecting column 210 is installed in the third front connecting groove 131, and the middle part of the first connecting column 210 is installed in the second front connecting groove 121. The first support column 110 is provided with a first intermediate connecting groove 112, the second support column 120 is provided with a second intermediate connecting groove 122, and the third support column 130 is provided with a third intermediate connecting groove 132. The first intermediate connecting groove 112, the second intermediate connecting groove 122, and the third intermediate connecting groove 132 are matched with each other. One end of the second connecting column 220 is installed in the first intermediate connecting groove 112, the other end of the second connecting column 220 is installed in the third intermediate connecting groove 132, and the middle part of the second connecting column 220 is installed in the second intermediate connecting groove 122. The first support column 110 is provided with a first rear connecting groove 113, the second support column 120 is provided with a second rear connecting groove 123, and the third support column 130 is provided with a third rear connecting groove 133. The first rear connecting groove 113, the second rear connecting groove 123, and the third rear connecting groove 133 are matched with each other. One end of the third connecting column 230 is installed in the first rear connecting groove 113, the other end of the third connecting column 230 is installed in the third rear connecting groove 133, and the middle part of the third connecting column 230 is installed in the second rear connecting groove 123. The first connecting column 210, the second connecting column 220, and the third connecting column 230 are all connected between the first support column 110, the second support column 120, and the third support column 130 to limit and support the position between the first support column 110, the second support column 120, and the third support column 130. This also acts as a reinforcing rib to enhance the overall strength and facilitates the use of forklifts.

[0028] The first support column 110 is provided with a first front mounting groove 114, the second support column 120 is provided with a second front mounting groove 124, the third support column 130 is provided with a third front mounting groove 134, the first connecting column 210 is provided with a first front placement groove 211, a first middle placement groove 212 and a first rear placement groove 213, and the first panel 310 has a first front mounting column 311, a first middle mounting column 312 and a first rear mounting column 313. The first front mounting column 311 passes through the first front mounting groove 114 and is installed in the first front placement groove 211. The first middle mounting column 312 passes through the first middle mounting groove 115 and is installed in the first middle placement groove 212. The first rear mounting column 313 passes through the first rear mounting groove 116 and is installed in the first rear placement groove 213. The first panel 310 is installed between the first support column 110, the second support column 120 and the third support column 130 via the first front mounting column 311, the first middle mounting column 312 and the first rear mounting column 313, and also positions the first connecting column 210.

[0029] The first support column 110 is provided with a first middle mounting groove 115, the second support column 120 is provided with a second middle mounting groove 125, the third support column 130 is provided with a third middle mounting groove 135, the second connecting column 220 is provided with a second front placement groove 221, a second middle placement groove 222 and a second rear placement groove 223, and the second panel 320 has a second front mounting column 321, a second middle mounting column 322 and a second rear mounting column 323. The second front mounting column 321 passes through the first middle mounting groove 115 and is installed in the second front placement groove 221. The second middle mounting column 322 passes through the second middle mounting groove 125 and is installed in the second middle placement groove 222. The second rear mounting column 323 passes through the second rear mounting groove 126 and is installed in the second rear placement groove 223. The second panel 320 is installed between the first support column 110, the second support column 120 and the third support column 130 via the second front mounting column 321, the second middle mounting column 322 and the second rear mounting column 323, and also positions the second connecting column 220.

[0030] The first support column 110 is provided with a first rear mounting groove 116, the second support column 120 is provided with a second rear mounting groove 126, the third support column 130 is provided with a third rear mounting groove 136, the third connecting column 230 is provided with a third front placement groove 231, a third middle placement groove 232 and a third rear placement groove 233, and the third panel 330 has a third front mounting column 331, a third middle mounting column 332 and a third rear mounting column 333. The third front mounting column 331 passes through the first rear mounting groove 116 and is installed in the third front placement groove 231. The third middle mounting column 332 passes through the second rear mounting groove 126 and is installed in the third middle placement groove 232. The third rear mounting column 333 passes through the third rear mounting groove 136 and is installed in the third rear placement groove 233. The third panel 330 is installed between the first support column 110, the second support column 120 and the third support column 130 via the third front mounting column 331, the third middle mounting column 332 and the third rear mounting column 333, and also positions the third connecting column 230.

[0031] The first support column 110 is provided with a first positioning groove 117, the first front mounting column 311 is provided with a first front limiting groove 314, the second front mounting column 321 is provided with a second front limiting groove 324, and the third front mounting column 331 is provided with a third front limiting groove 334. The first front mounting groove 114, the first middle mounting groove 115, the first rear mounting groove 116, the first front limiting groove 314, the second front limiting groove 324, and the third front limiting groove 334 are all connected to the first positioning groove 117. One end of the limiting strip 400 passes through the first positioning groove 117, the first front limiting groove 314, the second front limiting groove 324, and the third front limiting groove 334 in sequence. The second support column 120 is provided with a second positioning groove 127, the first middle mounting column 312 is provided with a first middle limiting groove 315, the second middle mounting column 322 is provided with a second middle limiting groove 325, and the third middle mounting column 332 is provided with a third middle limiting groove 335. The second front mounting groove 124, the second middle mounting groove 125, the second rear mounting groove 126, the first middle limiting groove 315, the second middle limiting groove 325, and the third middle limiting groove 335 are all connected to the second positioning groove 127. One end of the limiting strip 400 passes through the second positioning groove 127, the first middle limiting groove 315, the second middle limiting groove 325, and the third middle limiting groove 335 in sequence. The third support column 130 is provided with a third positioning groove 137, the first rear mounting column 313 is provided with a first rear limiting groove 316, the second rear mounting column 323 is provided with a second rear limiting groove 326, and the third rear mounting column 333 is provided with a third rear limiting groove 336. The third front mounting groove 134, the third middle mounting groove 135, the third rear mounting groove 136, the first rear limiting groove 316, the second rear limiting groove 326, and the third rear limiting groove 336 are all connected to the third positioning groove 137. One end of the limiting strip 400 passes through the third positioning groove 137, the first rear limiting groove 316, the second rear limiting groove 326, and the third rear limiting groove 336 in sequence. The limiting strip 400 can limit the installation of the first panel 310, the second panel 320, and the third panel 330 to ensure the stability of the assembly.

[0032] In one embodiment, the limiting strip 400 has a pull block with a plurality of spaced friction grooves. The pull block is designed to facilitate the removal of the limiting strip 400 from the support assembly 100, and the friction grooves facilitate the pulling of the pull block.

[0033] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A combination card, characterized by, The support assembly includes a first support column, a second support column and a third support column, the connecting assembly includes a first connecting column, a second connecting column and a third connecting column, the panel assembly includes a first panel, a second panel and a third panel, the first support column, the second support column and the third support column are connected through the first connecting column, the second connecting column and the third connecting column, the first panel, the second panel and the third panel are detachably mounted on the first support column, the second support column and the third support column, the limiting strips and the waterproof cover plates are multiple and are arranged at intervals, the bottom of the first support column, the second support column and the third support column is sleeved with a waterproof cover plate, the waterproof cover plate is provided with a sleeve groove, the bottom of the first support column, the second support column and the third support column is in interference fit with the sleeve groove, and the support assembly and the panel assembly are limited through the limiting strips.

2. The combination card according to claim 1, wherein: The first support column is provided with a first front connecting groove, the second support column is provided with a second front connecting groove, the third support column is provided with a third front connecting groove, the first front connecting groove, the second front connecting groove and the third front connecting groove are arranged in mutual matching mode, one end of the first connecting column is mounted in the first front connecting groove, the other end of the first connecting column is mounted in the third front connecting groove, and the middle part of the first connecting column is mounted in the second front connecting groove.

3. The combination card according to claim 2, wherein: The first support column is provided with a first middle connecting groove, the second support column is provided with a second middle connecting groove, the third support column is provided with a third middle connecting groove, the first middle connecting groove, the second middle connecting groove and the third middle connecting groove are arranged in mutual matching mode, one end of the second connecting column is mounted in the first middle connecting groove, the other end of the second connecting column is mounted in the third middle connecting groove, and the middle part of the second connecting column is mounted in the second middle connecting groove.

4. The combination card according to claim 3, wherein: The first support column is provided with a first rear connecting groove, the second support column is provided with a second rear connecting groove, the third support column is provided with a third rear connecting groove, the first rear connecting groove, the second rear connecting groove and the third rear connecting groove are arranged in mutual matching mode, one end of the third connecting column is mounted in the first rear connecting groove, the other end of the third connecting column is mounted in the third rear connecting groove, and the middle part of the third connecting column is mounted in the second rear connecting groove.

5. The combination card according to claim 4, wherein: The first support column is provided with a first front mounting groove, the second support column is provided with a second front mounting groove, the third support column is provided with a third front mounting groove, the first connecting column is provided with a first front placing groove, a first middle placing groove and a first rear placing groove, the first panel has a first front mounting column, a first middle mounting column and a first rear mounting column, the first front mounting column is mounted in the first front placing groove through the first front mounting groove, the first middle mounting column is mounted in the first middle placing groove through the first middle mounting groove, and the first rear mounting column is mounted in the first rear placing groove through the first rear mounting groove.

6. The combination card according to claim 5, wherein: The first support column is provided with a first middle installation slot, the second support column is provided with a second middle installation slot, the third support column is provided with a third middle installation slot, the second connecting column is provided with a second front placing slot, a second middle placing slot and a second rear placing slot, the second panel has a second front installation column, a second middle installation column and a second rear installation column, the second front installation column is installed in the second front placing slot through the first middle installation slot, the second middle installation column is installed in the second middle placing slot through the second middle installation slot, and the second rear installation column is installed in the second rear placing slot through the second rear installation slot.

7. The combination card according to claim 6, wherein: The first support column is provided with a first rear installation slot, the second support column is provided with a second rear installation slot, the third support column is provided with a third rear installation slot, the third connecting column is provided with a third front placing slot, a third middle placing slot and a third rear placing slot, the third panel has a third front installation column, a third middle installation column and a third rear installation column, the third front installation column is installed in the third front placing slot through the first rear installation slot, the third middle installation column is installed in the third middle placing slot through the second rear installation slot, and the third rear installation column is installed in the third rear placing slot through the third rear installation slot.

8. The combination card according to claim 7, wherein: The first support column is provided with a first positioning slot, the first front installation column is provided with a first front limiting slot, the second front installation column is provided with a second front limiting slot, the third front installation column is provided with a third front limiting slot, the first front installation slot, the first middle installation slot, the first rear installation slot, the first front limiting slot, the second front limiting slot and the third front limiting slot are in communication with the first positioning slot, and one end of the limiting strip sequentially passes through the first positioning slot, the first front limiting slot, the second front limiting slot and the third front limiting slot.

9. The combination card according to claim 7, wherein: The second support column is provided with a second positioning slot, the first middle installation column is provided with a first middle limiting slot, the second middle installation column is provided with a second middle limiting slot, the third middle installation column is provided with a third middle limiting slot, the second front installation slot, the second middle installation slot, the second rear installation slot, the first middle limiting slot, the second middle limiting slot and the third middle limiting slot are in communication with the second positioning slot, and one end of the limiting strip sequentially passes through the second positioning slot, the first middle limiting slot, the second middle limiting slot and the third middle limiting slot.

10. The combination card according to claim 7, wherein: The third support column is provided with a third positioning slot, the first rear installation column is provided with a first rear limiting slot, the second rear installation column is provided with a second rear limiting slot, the third rear installation column is provided with a third rear limiting slot, the third front installation slot, the third middle installation slot, the third rear installation slot, the first rear limiting slot, the second rear limiting slot and the third rear limiting slot are in communication with the third positioning slot, and one end of the limiting strip sequentially passes through the third positioning slot, the first rear limiting slot, the second rear limiting slot and the third rear limiting slot.