Coupling assembly and load carrying device

Abstract

The application provides a coupling assembly and a loading device. The coupling assembly comprises a first coupling piece, a second coupling piece and a locking piece. The first coupling piece comprises a first base, a pair of first wings and a first connecting part. The first connecting part is provided with a first connecting hole. The second coupling piece is arranged opposite to the first coupling piece along a second direction. The second coupling piece comprises a second base, a pair of second wings and a second connecting part. The second connecting part is provided with a second connecting hole. The second coupling piece and the first coupling piece enclose two limiting holes. The locking piece is detachably connected to the first connecting hole and the second connecting hole. The two limiting holes formed by the first coupling piece and the second coupling piece are used to accommodate the adjacent stand columns or leg pieces of two adjacent pallet boxes, so that the two pallet boxes are coupled together, which helps to expand the volume of the pallet box and adapt to the loading requirements of goods of different sizes or different quantities.

Description

Technical Field

[0001] This application relates generally to the technical field of transport containers, and more specifically to a connecting component and a cargo-carrying device. Background Technology

[0002] Pallet boxes, as a type of pallet with a superstructure, offer a wider range of applications due to the different forms of their superstructures. Currently, pallet boxes are widely used in various fields such as automotive, chemical, and agriculture. When users purchase a single model of pallet box (specifying size and structure), it is typically only suitable for goods meeting its internal dimensions, making it difficult to accommodate various differently shaped contents. When the dimensions of the contents exceed the design requirements of the purchased pallet box, users have to customize pallet boxes with newer technical specifications, increasing logistics costs and significantly reducing pallet box turnover.

[0003] Therefore, there is a need to provide a connecting component and a cargo-carrying device to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially address the aforementioned problems, a first aspect of this application provides a connecting assembly for connecting two pallet boxes, each pallet box including uprights and support legs, the connecting assembly comprising:

[0006] The first connector includes a first base, a pair of first wings, and a first connecting portion. The pair of first wings are respectively located at both ends of the first base along a first direction. The first connecting portion is located between the pair of first wings and is spaced apart from the pair of first wings along the first direction. The first connecting portion has a first connecting hole. The pair of first wings and the first connecting portion both protrude from the same side of the first base along a second direction, which is perpendicular to the first direction.

[0007] The second connecting member is arranged opposite to the first connecting member along the second direction. The second connecting member includes a second base, a pair of second wings, and a second connecting portion. The pair of second wings are respectively located at both ends of the second base along the first direction. The second connecting portion is located between the pair of second wings and is spaced apart from the pair of second wings along the first direction. The second connecting portion has a second connecting hole. The pair of second wings and the second connecting portion both protrude from the same side of the second base along the second direction. The pair of second wings are located between the pair of first wings along the first direction. The pair of second wings and the pair of first wings are stacked one-to-one correspondingly along the first direction. The second connecting portion is aligned with the first connecting portion. The second connecting member and the first connecting member enclose two limiting holes suitable for accommodating the column or the support leg. The two limiting holes are located on both sides of the first connecting portion and the second connecting portion along the second direction.

[0008] A locking element, which is detachably connected to the first connection hole and the second connection hole.

[0009] According to the connecting component of the first aspect of this application, when two pallet boxes are connected by the connecting component, the two limiting holes formed by the first connecting member and the second connecting member respectively accommodate the adjacent uprights or legs of the two pallet boxes, thereby connecting the two pallet boxes together. This helps to expand the volume of the pallet boxes and adapt to the loading needs of goods of different sizes or quantities, thus improving the utilization rate and applicability of the pallet boxes and reducing logistics costs.

[0010] Optionally, the cross-sectional area of ​​the first base perpendicular to the first direction is greater than the cross-sectional area of ​​the second base perpendicular to the first direction;

[0011] The cross-sectional area of ​​the first wing perpendicular to the second direction is greater than the cross-sectional area of ​​the second wing perpendicular to the second direction.

[0012] Optionally, the first wing is a plate-like structure, and the dimension of the first wing along a third direction is greater than the dimension of the first wing along the first direction, wherein the third direction is perpendicular to the first direction and the second direction;

[0013] The second wing is a plate-like structure, and the dimension of the second wing along the third direction is larger than the dimension of the second wing along the first direction;

[0014] The dimension of the first wing along the third direction is greater than or equal to the dimension of the second wing along the third direction.

[0015] Optionally, the first base is a plate-like structure, and the dimension of the first base along the second direction is larger than the dimension of the second base along the second direction;

[0016] The first wing is a plate-like structure, and the dimension of the first wing along the first direction is greater than the dimension of the second wing along the first direction.

[0017] Optionally, the dimension of the first wing along the second direction is smaller than the dimension of the second wing along the second direction.

[0018] Optionally, the first connecting member is configured as a casting; and / or

[0019] The second connecting member is constructed as a sheet metal part; and / or

[0020] The locking element is configured as a pin.

[0021] Optionally, the number of the first connecting parts is a pair, and the pair of first connecting parts are arranged at intervals along a third direction, the third direction being perpendicular to the first direction and the second direction;

[0022] The number of the second connecting parts is one pair, and the pair of second connecting parts are arranged at intervals along the third direction;

[0023] A pair of first connecting portions and a pair of second connecting portions are arranged in a one-to-one correspondence, and the first connecting portions and the adjacent second connecting portions are stacked along the third direction.

[0024] Optionally, a pair of first connecting portions are located between a pair of second connecting portions along the third direction, or a pair of second connecting portions are located between a pair of first connecting portions along the third direction; and / or

[0025] The first connecting part is a plate-shaped structure, and the dimension of the first connecting part along the third direction is greater than the dimension of the second connecting part along the third direction.

[0026] Optionally, the bottom end of the first base includes a support portion protruding relative to the lower surface of the first wing, the support portion being adapted to abut against the legs of the pallet box; and / or

[0027] The top of the first connector has a clearance groove; and / or

[0028] The clearance groove is located at the top of the first base and is adjacent to the first wing; and / or

[0029] A limiting boss is formed on the opposing surfaces of a pair of first wings extending along the first direction. The limiting boss is located at the bottom end of the first wing and is used to support the second wing of the second connector.

[0030] A second aspect of this application provides a cargo-carrying device, the cargo-carrying device comprising:

[0031] At least two pallet boxes, each pallet box including a support base and four uprights, the outer contour of the support base being square, the four uprights being respectively connected to the four corners of the support base, the pallet boxes having open or operable cargo entry and exit parts at both ends along a first horizontal direction, and at least two pallet boxes being arranged along the first horizontal direction;

[0032] At least two sets of the connecting components described above are arranged between two adjacent pallet boxes. The two sets of connecting components are located at opposite ends of the two pallet boxes along a second horizontal direction, which is perpendicular to the first horizontal direction. Each set of connecting components includes at least two connecting components, which are spaced apart along a vertical direction, which is perpendicular to both the first and second horizontal directions. The two limiting holes of each connecting component are used to accommodate two adjacent uprights of the two adjacent pallet boxes, thereby connecting the two adjacent pallet boxes into a single unit.

[0033] The accommodating spaces of two adjacent pallet boxes are connected to each other through the open cargo inlet / outlet, or the accommodating spaces of two adjacent pallet boxes are connected to each other when the doors of the adjacent pallet boxes are open.

[0034] With the connecting component installed to the adjacent pallet box, the first direction is consistent with the first horizontal direction, and the second direction is consistent with the second horizontal direction.

[0035] According to the loading device of the second aspect of this application, by applying the aforementioned connecting components, any two pallet boxes can be quickly and reliably assembled, thereby significantly increasing the effective volume of the pallet boxes and achieving the purpose of expanding capacity. This modular design allows for the connection and expansion of existing pallet boxes according to the size of the loaded goods, thus meeting the loading needs of goods of different sizes, ultimately improving the utilization and applicability of pallet boxes and reducing logistics costs. By adopting the above technical solution, it is possible to use existing smaller-sized pallet boxes to load larger-sized components and materials without purchasing new pallet boxes. This design effectively solves the industry problem of needing to replace pallet boxes of different sizes due to changes in product dimensions. Attached Figure Description

[0036] The following drawings, illustrating embodiments of this application, are incorporated herein by reference and are used to understand this application. The drawings illustrate embodiments of this application and their descriptions, serving to explain the principles of this application. In the drawings,

[0037] Figure 1 A perspective view of a pallet box according to a preferred embodiment of this application;

[0038] Figure 2 A perspective view of a cargo-carrying device according to a preferred embodiment of this application;

[0039] Figure 3 for Figure 2 The front view of the cargo loading device is shown.

[0040] Figure 4 for Figure 2 A schematic diagram of the structure in which the two side frames are connected by a connecting component;

[0041] Figure 5 This is a perspective view of the first connecting component in an assembled state according to a preferred embodiment of this application;

[0042] Figure 6 for Figure 5 A schematic diagram of the structure of the first connecting component;

[0043] Figure 7 for Figure 5 A schematic diagram of the structure of the second connecting component;

[0044] Figure 8 This is a perspective view of the second connecting component in an assembled state according to a preferred embodiment of this application;

[0045] Figure 9 for Figure 8 A schematic diagram of the structure of the first connecting component;

[0046] Figure 10 for Figure 8 A schematic diagram of the structure of the second connecting member; and

[0047] Figure 11 for Figure 2 A schematic diagram of the local structure at point I. Detailed Implementation

[0048] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0049] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art.

[0050] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” / “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0051] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0052] The terms “center,” “parallel,” “perpendicular,” “aligned,” and “symmetrical” used in this application do not have to be precise, but can include typical engineering tolerances.

[0053] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0054] Pallet boxes, as a type of pallet with a superstructure, offer a wider range of applications due to the different forms of their superstructures. Currently, pallet boxes are widely used in various fields such as automotive, chemical, and agriculture. When users purchase a single model of pallet box (specifying size and structure), it is typically only suitable for goods meeting its internal dimensions, making it difficult to accommodate various differently shaped contents. When the size, shape, or load of the contents exceeds the design requirements of the purchased pallet box, users have to customize pallet boxes with newer technical specifications, increasing logistics costs and significantly reducing pallet box turnover.

[0055] To address, at least partially, the aforementioned problems, this application proposes a connecting component and a cargo-carrying device. The inventive concept of this application is to use a single pallet box as a unit module and a connecting component as another unit module. Without altering the existing pallet box structure, a design based on the connecting component allows for the connection of two or more pallet boxes into a different type of cargo container. This achieves the goals of expanding pallet box capacity, increasing pallet box turnover and utilization, accommodating different sized contents, and reducing logistics costs. See below for further details. Figures 1 to 11 The connecting components, cargo-carrying devices, and pallet box expansion methods according to embodiments of this application will be described in detail.

[0056] First Implementation Method

[0057] See Figures 5 to 7 A first embodiment of this application provides a connecting assembly 102. This connecting assembly 102 is used to connect any two pallet boxes 101. Each pallet box 101 includes a column 121 and support legs 140. The connecting assembly 102 includes a first connecting member 160, a second connecting member 170, and a locking member 180.

[0058] The first connecting member 160 includes a first base 161, a pair of first wings 162, and a first connecting portion 163. The pair of first wings 162 are located at opposite ends of the first base 161 along a first direction D1. The first connecting portion 163 is located between the pair of first wings 162 and is spaced apart from the pair of first wings 162 along the first direction D1. The first connecting portion 163 has a first connecting hole 163a. ​​Both the pair of first wings 162 and the first connecting portion 163 protrude from the same side of the first base 161 along a second direction D2. The second direction D2 is perpendicular to the first direction D1.

[0059] The second connector 170 is arranged opposite to the first connector 160 along the second direction D2. The second connector 170 includes a second base 171, a pair of second wings 172, and a second connecting portion 173. The pair of second wings 172 are located at opposite ends of the second base 171 along the first direction D1. The second connecting portion 173 is located between the pair of second wings 172 and is spaced apart from the pair of second wings 172 along the first direction D1. The second connecting portion 173 has a second connecting hole 173a. The pair of second wings 172 and the second connecting portion 173 both protrude from the same side of the second base 171 along the second direction D2. The pair of second wings 172 are located between the pair of first wings 162 along the first direction D1. The pair of second wings 172 and the pair of first wings 162 are stacked one-to-one correspondingly along the first direction D1. The second connecting portion 173 is aligned with the first connecting portion 163. The second connector 170 and the first connector 160 together form two limiting holes 102a suitable for accommodating the column 121 or the leg 140. The two limiting holes 102a are located on both sides of the first connecting portion 163 and the second connecting portion 173 along the second direction D2.

[0060] The locking element 180 is detachably connected to the first connecting hole 163a and the second connecting hole 173a.

[0061] In use, the first connector 160 and the second connector 170 are first fastened together so that the second connector 170 is embedded in the space enclosed by the first connector 160. Then, the locking member 180 is inserted into the first connecting hole 163a and the second connecting hole 173a to fasten the first connector 160 and the second connector 170 together.

[0062] In an application scenario where two pallet boxes 101 are connected using connecting components 102, the first connecting member 160 and the second connecting member 170 are first assembled from opposite sides of a pair of adjacent uprights 121, and then the locking member 180 is fastened together through the first connecting hole 163a and the second connecting hole 173a, thereby connecting the pair of adjacent uprights 121. After connecting the two pairs of adjacent uprights 121 of the two pallet boxes 101 together using two sets of connecting components 102, the assembly of the two pallet boxes 101 is completed.

[0063] According to the first embodiment of the present application, when two pallet boxes 101 are connected by the connecting component 102, the two limiting holes 102a formed by the first connecting member 160 and the second connecting member 170 respectively accommodate the adjacent uprights 121 or support legs 140 of the two pallet boxes 101, thereby connecting the two pallet boxes 101 together. This helps to expand the volume of the pallet boxes 101, thereby adapting to the loading needs of goods of different sizes or quantities. This can improve the utilization rate and applicability of the pallet boxes 101 and reduce logistics costs.

[0064] Continue reading Figures 5 to 7 In some embodiments, the cross-sectional area of ​​the first base 161 perpendicular to the first direction D1 is greater than the cross-sectional area of ​​the second base 171 perpendicular to the first direction D1. The cross-sectional area of ​​the first wing 162 perpendicular to the second direction D2 is greater than the cross-sectional area of ​​the second wing 172 perpendicular to the second direction D2. This arrangement improves the structural strength of the first connector 160. Since the first wing 162 is located outside the second wing 172, it can compensate for the insufficient structural strength of the second wing 172. When bearing load, the load that the connecting assembly needs to bear in the first direction D1 is greater than the load that needs to be borne in the first direction D1. By adopting this technical solution, the first connector 160 can be used to mainly bear the load along the first direction D1, while the second connector 170, in cooperation with the first connector 160, can limit the two pallet boxes 101 in the second direction D2. This helps to reduce the material used in the second connector 170 while meeting the corresponding load-bearing capacity, thereby achieving the purpose of weight reduction.

[0065] See also Figures 5 to 7 In some embodiments, the first wing 162 is a plate-like structure. The dimension of the first wing 162 along a third direction D3 is greater than the dimension of the first wing 162 along a first direction D1. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The second wing 172 is a plate-like structure. The dimension of the second wing 172 along a third direction D3 is greater than the dimension of the second wing 172 along the first direction D1. The dimension of the first wing 162 along a third direction D3 is greater than or equal to the dimension of the second wing 172 along a third direction D3. The first direction D1 can be understood as the thickness direction of the first wing 162 and the second wing 172. The third direction D3 can be understood as the width direction of the first wing 162 and the second wing 172. By setting the dimension of the first wing 162 along a third direction D3 to be greater than or equal to the dimension of the second wing 172 along a third direction D3, it is helpful to achieve the first wing 162 covering both ends of the second wing 172 along a third direction D3, thereby effectively compensating for the structural strength of the portion of the second wing 172 corresponding to the first wing 162.

[0066] Furthermore, in a plane perpendicular to the first direction D1, the orthographic projection of the second wing 172 lies entirely within the orthographic projection of the first wing 162. Compared to a design where the second wing 172 protrudes from the first wing 162 along a third direction D3, this design is more advantageous for reliably compensating for the structural strength of the portion of the second wing 172 corresponding to the first wing 162.

[0067] See also Figures 5 to 7 In some embodiments, the first base 161 is a plate-like structure. The dimension of the first base 161 along the second direction D2 is larger than the dimension of the second base 171 along the second direction D2. The first wing 162 is a plate-like structure. The dimension of the first wing 162 along the first direction D1 is larger than the dimension of the second wing 172 along the first direction D1. It can be understood that the thickness of the first base 161 is greater than the thickness of the second base 171. The thickness of the first wing 162 is greater than the thickness of the second wing 172. This is beneficial for further enhancing the structural strength of the first connector 160, making the structural strength of the first connector 160 greater than that of the second connector 170, and also beneficial for saving manufacturing costs and reducing weight of the second connector 170. Moreover, in some application scenarios, the second connector 170 can be placed inside the pallet box 101. Compared with setting the thickness of the second connector 170 to be the same as or greater than the thickness of the first connector 160, it is beneficial to reduce the occupation of the pallet box 101's accommodating space 101a by the second connector 170, and also to reduce the risk of interference such as the second base 171 of the second connector 170 rubbing against the goods.

[0068] See also Figures 5 to 7 In some embodiments, the dimension of the first wing 162 along the second direction D2 is smaller than the dimension of the second wing 172 along the second direction D2. Reducing the dimension of the first wing 162 along the second direction D2, while still meeting the required load-bearing capacity, helps to reduce material usage and weight, thereby reducing the cost of the connecting assembly 102 and achieving lightweighting.

[0069] In some embodiments, the first connector 160 is configured as a casting. Casting is advantageous for improving the structural strength and load-bearing capacity of the first connector 160.

[0070] In other embodiments, the first coupling 160 may be a structure made using processes other than casting.

[0071] In some embodiments, the second connector 170 is constructed as a sheet metal part. Using a sheet metal part for the second connector 170, provided that the first connector 160 meets the required load-bearing capacity, helps to reduce costs and weight.

[0072] In other embodiments, the second connector 170 may take the form of a structure other than sheet metal.

[0073] In some embodiments, the locking member 180 is configured as a pin. Using a pin as the locking member 180 facilitates more efficient assembly and disassembly from the first connector 160 and the second connector 170.

[0074] See Figure 5 Preferably, the pin can be a ball bearing positioning pin. Ball bearing positioning pins are a type of elastic pin or rolling pin, and their core principle is to achieve positioning and fixation through the rolling of a ball bearing within the hole.

[0075] In other examples, the ball locating pin can also be replaced by other resilient pins or rolling pins.

[0076] Other examples include spring pins, snap ring pins, zero-point locating pins, and pneumatic locating pins.

[0077] In other embodiments, the pin may be replaced by a removable fastener such as a bolt.

[0078] See also Figures 5 to 7 In some embodiments, the number of first connecting portions 163 is one pair. The pair of first connecting portions 163 are arranged at intervals along a third direction D3. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The number of second connecting portions 173 is also one pair. The pair of second connecting portions 173 are arranged at intervals along a third direction D3. The pair of first connecting portions 163 and the pair of second connecting portions 173 are arranged in a one-to-one correspondence. Furthermore, the first connecting portions 163 and adjacent second connecting portions 173 are stacked along the third direction D3. By providing a pair of first connecting portions 163 and a pair of second connecting portions 173, the number of connection points between the first connecting member 160 and the second connecting member 170 can be increased, thereby improving the reliability and stability of the connection between the first connecting member 160 and the second connecting member 170. Meanwhile, since the first connecting part 163 and the adjacent second connecting part 173 are stacked along the third direction D3, it is convenient to position the first connecting part 160 and the second connecting part 170 in the third direction D3 during the assembly of the first connecting part 160 and the second connecting part 170 together, thereby improving assembly efficiency.

[0079] See Figure 5For example, a pair of first connecting portions 163 are located between a pair of second connecting portions 173 along a third direction D3. This allows the pair of second connecting portions 173 to limit the pair of first connecting portions 163 in the third direction D3. Moreover, after the pair of first connecting portions 163 are placed between the pair of second connecting portions 173, the lower of the pair of second connecting portions 173 can support the first connecting portion 163, thereby preventing the first connecting member 160 from falling. This facilitates the assembly of the locking member 180 with the first connecting member 160 and the second connecting member 170 without the need to additionally support the first connecting member 160 or the second connecting member 170, making it more convenient and less strenuous.

[0080] For example, a pair of second connecting portions 173 are located between a pair of first connecting portions 163 along a third direction D3. Similarly, the pair of first connecting portions 163 can limit the pair of second connecting portions 173 in the third direction D3. Moreover, after the pair of second connecting portions 173 are placed between the pair of first connecting portions 163, the lower first connecting portion 163 of the pair of first connecting portions 163 can support the second connecting portion 173, thereby preventing the second connecting member 170 from falling. This facilitates the assembly of the locking member 180 with the first connecting member 160 and the second connecting member 170 without the need to additionally support the first connecting member 160 or the second connecting member 170, thus making it more convenient and effortless.

[0081] See Figure 5 In some embodiments, the first connecting portion 163 is a plate-like structure. The dimension of the first connecting portion 163 along the third direction D3 is larger than the dimension of the second connecting portion 173 along the third direction D3. Here, the third direction D3 can be understood as the thickness direction of the first connecting portion 163 and the second connecting portion 173. By this arrangement, the structural strength of the first connecting portion 163 is greater than that of the second connecting portion 173. When the first connecting portion 163 and the second connecting portion 173 are stacked, it is advantageous to improve the load-bearing performance of the first connecting portion 163 and the second connecting portion 173 as a whole. At the same time, it is also beneficial to reduce the material used and the weight of the second connecting member 170.

[0082] See Figures 5 to 7 Furthermore, a pair of plate-shaped first connecting portions 163 are parallel to each other. The dimension of the first connecting portion 163 along the first direction D1 is larger than the dimension of the first connecting portion 163 along the third direction D3. A pair of plate-shaped second connecting portions 173 are parallel to each other. The dimension of the second connecting portion 173 along the first direction D1 is larger than the dimension of the second connecting portion 173 along the third direction D3. This increases the area of ​​the first connecting portion 163 and the second connecting portion 173 facing each other along the third direction D3, thereby further improving the load-bearing capacity of the connection structure between the first connecting portion 163 and the second connecting portion 173.

[0083] In some embodiments, the second wing 172 abuts against the first base 161. This facilitates the positioning of the first connector 160 and the second connector 170 in the second direction D2.

[0084] In some embodiments, the second connecting portion 173 abuts against the first base portion 161. This facilitates the positioning of the first connecting member 160 and the second connecting member 170 in the second direction D2.

[0085] In some embodiments, the first connecting portion 163 abuts against the second base portion 171. Similarly, this facilitates the positioning of the first connecting member 160 and the second connecting member 170 in the second direction D2.

[0086] In some embodiments, a portion of the first connecting portion 163 abuts against the second base portion 171. A portion of the second connecting portion 173 abuts against the first base portion 161. This facilitates the positioning of the first connecting member 160 and the second connecting member 170 in the second direction D2. It is understood that when a pair of first connecting portions 163 includes two first connecting portions 163 and a pair of second connecting portions 173 includes two second connecting portions 173, the two first connecting portions 163 are located above the corresponding two second connecting portions 173, or the two first connecting portions 163 are located below the corresponding two second connecting portions 173.

[0087] Second Implementation Method

[0088] Figures 8 to 10 The connecting component 102 according to the second embodiment of this application, namely the second connecting component 104 hereinafter referred to as the second connecting component 104, is schematically shown. Except for the construction of the first connecting member 260, the connecting component 102 according to the second embodiment has a substantially the same construction as the connecting component 102 according to the first embodiment, wherein structures with the same function are given the same or similar reference numerals. Therefore, for the sake of brevity, only the distinguishing features will be described in detail here.

[0089] Similar to the connecting assembly 102 of the first embodiment, the connecting assembly 102 according to the second embodiment includes a first connecting member 260, a second connecting member 270, and a locking member 280. The first connecting member 260 includes a first base 261, a first wing 262, and a first connecting portion 263. The first connecting portion 263 is provided with a first connecting hole 263a. The second connecting member 270 includes a second base 271, a second wing 272, and a second connecting portion 273. The second connecting portion 273 is provided with a second connecting hole 273a.

[0090] See Figure 8 and Figure 9In some embodiments, the bottom end of the first base 261 includes a support portion 261a protruding relative to the lower surface of the first wing 262. The support portion 261a is adapted to abut against the legs 141 of the pallet box 101. In some applications, the bottom end of the upright 121 of the pallet box 101 is provided with legs 141, and the cross-sectional area of ​​the legs 141 increases from top to bottom. By adopting the technical solution of this embodiment, the connecting component 102 located between the legs 141 and the bearing seat 130 can increase the connection point and contact area between the first connecting member 260 and the legs 141, thereby improving the load-bearing performance of the connection structure between the connecting component 102 and the two connected pallet boxes 101. At the same time, the first connecting member 260 can be limited in the third direction D3 by the legs 141 and the bearing seat 130.

[0091] Continue reading Figure 8 and Figure 9 In some embodiments, a clearance groove 261b is formed on the top of the first connector 260. In applications where the column 121 and the support 130 need to be welded, providing a clearance groove 261b on the top of the first connector 260 helps to avoid the weld bead located between the support 130 and the column 121.

[0092] Optionally, the clearance groove 261b is located on top of the first base 261. And the clearance groove 261b is adjacent to the first wing 262.

[0093] See also Figure 8 and Figure 9 Optionally, the top surface of the first base 261 is lower than the top surface of the first wing 262. The top surface of the first connecting portion 263 adjacent to the top of the first base 261 is flush with the top surface of the first base 261. A clearance groove 261b is formed between the first base 261 and the first wing 262. Compared to providing the clearance groove 261b only locally at the connection between the corresponding bearing seat 130 and the column 121 of the first connector 260, this increases the arrangement range of the clearance groove 261b, thereby enhancing the adaptability to welds with different distribution ranges.

[0094] See Figure 9 In some embodiments, a pair of first wings 262 extend along a first direction D1 to form a limiting boss 262a on their opposing surfaces. The limiting boss 262a is located at the bottom end of the first wing 262. The limiting boss 262a is used to support the second wing 272 of the second connector 270. When the first connector 260 with the limiting boss 262a and the corresponding second connector 270 are installed between the underside of the support 130 and the support leg 141, the limiting boss 262a and the support 130 together limit the second connector 270 in a third direction D3.

[0095] See Figures 1 to 4Embodiments of this application provide a cargo loading device 100. The cargo loading device 100 includes at least two pallet boxes 101 and at least two sets of the aforementioned connecting components 102.

[0096] Pallet box 101 includes a support base 130 and four uprights 121. The outer contour of the support base 130 is square. The four uprights 121 are respectively connected to the four corners of the support base 130. The two ends of the pallet box 101 along the first horizontal direction Dh1 have open or operable cargo entry and exit parts. At least two pallet boxes 101 are arranged along the first horizontal direction Dh1.

[0097] Two sets of connecting components 102 are arranged between two adjacent pallet boxes 101. The two sets of connecting components 102 are located at opposite ends of the two pallet boxes 101 along a second horizontal direction Dh2. The second horizontal direction Dh2 is perpendicular to the first horizontal direction Dh1. Each set of connecting components 102 includes at least two connecting components 102. The at least two connecting components 102 are spaced apart along a vertical direction Dv. The vertical direction Dv is perpendicular to the first horizontal direction Dh1 and the second horizontal direction Dh2. Two limiting holes 102a of the connecting components 102 are respectively used to accommodate two adjacent uprights 121 of the two adjacent pallet boxes 101, so as to connect the two adjacent pallet boxes 101 into a single unit.

[0098] The accommodating spaces 101a of two adjacent pallet boxes 101 are connected to each other through an open cargo access section. Alternatively, the accommodating spaces 101a of two adjacent pallet boxes 101 are connected to each other when the doors 110 of two adjacent pallet boxes 101 are open.

[0099] With the connecting assembly 102 installed on the adjacent pallet box 101, the first direction D1 is consistent with the first horizontal direction Dh1, and the second direction D2 is consistent with the second horizontal direction Dh2.

[0100] According to the embodiments of this application, the loading device 100, by applying the aforementioned connecting component 102, enables the rapid and reliable assembly of any two pallet boxes 101, thereby significantly expanding the effective volume of the pallet boxes 101 and achieving the purpose of increasing volume. By adopting the technical solution of this application, existing pallet boxes 101 can be connected and expanded according to the size of the loaded goods, thereby meeting the loading needs of goods of different sizes or quantities, ultimately improving the utilization rate and applicability of the pallet boxes 101 and reducing logistics costs. By adopting the above technical solution, it is possible to use existing smaller-sized pallet boxes 101 to load larger-sized materials and other goods without purchasing new pallet boxes 101. This design effectively solves the industry problem of needing to replace pallet boxes 101 of different sizes due to changes in product size or cargo quantity.

[0101] Continue reading Figures 1 to 4 In some embodiments, the pallet box 101 includes a pair of doors 110 and a pair of side frames 120. The pair of doors 110 are operablely connected to both ends of the support base 130 along a first horizontal direction Dh1. The doors 110 constitute a cargo inlet / outlet. The pair of side frames 120 are connected to both ends of the support base 130 along a second horizontal direction Dh2. When the doors 110 of two adjacent pallet boxes 101 are open, the accommodating spaces 101a of the two adjacent pallet boxes 101 are interconnected. It is understood that when two pallet boxes 101 are assembled, the sides of the two pallet boxes 101 with the cargo inlet / outlet face each other. Before or after assembling the two pallet boxes 101, opening the doors 110 allows for communication between the assembled two pallet boxes 101, thereby expanding their capacity.

[0102] It should be noted that the opening method of the aforementioned door 110 can be one of folding, disassembly, or other methods.

[0103] See also Figures 1 to 4 Furthermore, the pallet box 101 is a cage-type pallet box. The side frame 120 includes a plurality of horizontal blocks 123 and a plurality of vertical blocks 124. The horizontal blocks 123 extend along a first horizontal direction Dh1. The vertical blocks 124 extend along a vertical direction Dv. The plurality of horizontal blocks 123 are spaced apart along the vertical direction Dv. The plurality of vertical blocks 124 are spaced apart along the first horizontal direction Dh1. A square grid 125 is formed between every two horizontal blocks 123 and every two vertical blocks 124, and between the horizontal blocks 123, the vertical blocks 124 and the adjacent uprights 121. When the connecting assembly 102 is installed to the adjacent pallet box 101, the first connecting member 160 and the second connecting member 170 are confined between two adjacent horizontal blocks 123. In the process of connecting two cage-type pallet boxes using the connecting assembly 102, the first wing 162 and the second wing 172 are passed through the square mesh 125 and nested together. Then, the first connecting member 160 and the second connecting member 170 are fastened together using the locking member 180, thus connecting a pair of uprights 121 together. After assembly is completed, the connecting assembly 102 connected to the square mesh 125 can be limited by the horizontal blocking members 123 on the upper and lower sides of the square mesh 125.

[0104] Optionally, the distance between two adjacent transverse blocks 123 is equal to the largest of the dimensions of the first wing 162 and the second wing 172 along the third direction D3.

[0105] The following further explanation is needed regarding cage-type pallet boxes.

[0106] See Figures 1 to 4 ,as well as Figure 11The uprights 121 of the cage-type pallet box are fixed to the side frame 120, or the uprights 121 and the side frame 120 are fixed as a single piece. The door 110 is detachably connected to the support base 130 and the uprights 121. The side frame 120 is detachably connected to the support base 130. A first stop 115 is provided on the outer surface of the lower end of the door 110. When the door 110 is installed on the upper part of the support base 130, the first stop 115 is located on the outer side of the support base 130 along the first horizontal direction Dh1, and is used to prevent the bottom end of the door 110 from moving into the receiving space 101a along the first horizontal direction Dh1. Second stops 131 are provided at both ends of the support base 130 along the first horizontal direction Dh1. The second stops 131 protrude from the upper surface of the support base 130. With the door 110 installed on the upper part of the support 130, the second stop 131 is located outside the door 110 along the first horizontal direction Dh1, preventing the bottom end of the door 110 from moving away from the receiving space 101a along the first horizontal direction Dh1. A first lock 113 and a second lock 114 are respectively provided at both ends of the door 110 along the second horizontal direction Dh2. The first lock 113 and the second lock 114 are arranged at intervals along the vertical direction Dv. The door 110 is detachably connected to the column 121 via the first lock 113 and the second lock 114. Specifically, each of the first lock 113 and the second lock 114 includes a locking rod. The column 121 has a lock hole for inserting the locking rod. The door 110 includes an upper door body 111 and a lower door body 112. The upper door body 111 is rotatably connected to the lower door body 112 about the rotation axis AX. The first lock 113 is provided on the upper door body 111. The second lock 114 is disposed on the lower door 112. In some applications, the connection between the upper door 111 and the pillar 121 can be released by opening the first lock 113, allowing the upper door 111 to be flipped away from the receiving space 101a around the rotation axis AX until it folds to the outside of the lower door 112. This creates an opening in the area where the upper door 111 was originally located, facilitating the loading and unloading of goods. In other applications, by opening the first lock 113 and the second lock 114, the entire door 110 can be folded towards the receiving space 101a until it is placed entirely on top of the support base 130. For technical solutions such as the lock structure between the door 110 and the pillar 121, please refer to the applicant's prior patent application, publication number CN221234247U. The contents described and disclosed in that patent are incorporated herein by reference.

[0107] Each of the four corners of the support base 130 is provided with a support leg 140 and a corner limiting member 150. The support leg 140 and the corner limiting member 150 are fixed to the support base 130 by welding or other means. The support leg 140 includes a support column 142 and a foot 141. The support column 142 extends vertically in the direction Dv and protrudes from the lower surface of the support base 130. The foot 141 is connected to the bottom end of the support column 142 and is spaced apart from the lower surface of the support base 130 in the vertical direction Dv. The corner limiting member 150 includes a first limiting part 151, a second limiting part 152, and a reinforcing limiting part 153. The first limiting part 151 is located outside the column 121 along the first horizontal direction Dh1 and is used to limit the column 121 along the first horizontal direction Dh1. The second limiting part 152 is located on the outside of the column 121 along the second horizontal direction Dh2, and is used to limit the column 121 along the second horizontal direction Dh2. The first limiting part 151 and the second limiting part 152 enclose a right-angle positioning space, which is used to position the column 121 and the side frame 120 in the first horizontal direction Dh1 and the second horizontal direction Dh2. In order to limit the lower corner of the door 110, the first limiting part 151 protrudes from the surface of the column 121 facing the other column 121 along the first horizontal direction Dh1, such that: in the plane perpendicular to the first horizontal direction Dh1, the orthographic projection of the first limiting part 151 coincides with the orthographic projection of the door 110. The reinforcing limiting part 153 is connected between the second limiting part 152 and the support seat 130. The reinforcing limiting part 153 can strengthen the connection structure between the corner limiting member 150 and the support seat 130, and at the same time enhance the limiting effect on the side frame 120 and improve the stability of the structure. In a plane perpendicular to the second horizontal direction Dh2, the orthographic projection of the reinforcing limiting part 153 coincides with the orthographic projection of the side frame 120. The first limiting part 151 is provided with a guide hole 151a and a stop groove 151b. The guide hole 151a includes a first hole segment 151a1, a transition hole segment 151a2, and a second hole segment 151a3. Both the first hole segment 151a1 and the second hole segment 151a3 extend along the vertical direction Dv. The first hole segment 151a1 is located above the second hole segment 151a3. And along the second horizontal direction Dh2, the distance between the first hole segment 151a1 and another post 121 is less than the distance between the second hole segment 151a3 and the same other post 121. The transition hole segment 151a2 connects the bottom end of the first hole segment 151a1 and the top end of the second hole segment 151a3. The stop groove 151b is located at the top end of the first limiting part 151. The groove opening of the stop groove 151b faces upward. In one of the two posts 121 corresponding to either side frame 120, a stop boss 121a and a mounting hole are provided on the surface of one post 121 facing away from the other post 121 along a first horizontal direction Dh1. The stop boss 121a protrudes from the surface of the post 121 along the first horizontal direction Dh1. The mounting hole is adapted for detachably connecting a fastening connector 122. The fastening connector 122 is adapted to be inserted into the guide hole 151a.By passing the fastening connector 122 through the guide hole 151a and connecting it to the mounting hole of the column 121, the side frame 120 is connected to the support seat 130. When the fastening connector 122 is located in the first hole section 151a1, the stop boss 121a disengages from the stop groove 151b, at which point the side frame 120 can be flipped and folded over the support seat 130. When the fastening connector 122 is located at the bottom end of the second hole section 151a3 and the stop boss 121a is located in the stop groove 151b, the engagement of the stop boss 121a and the stop groove 151b, as well as the engagement of the fastening connector 122 and the second hole section 151a3, prevents the side frame 120 from flipping and folding, and prevents the side frame 120 from moving along the second horizontal direction Dh2. To further improve the stability of the connection structure between the lower end of the side frame 120 and the support seat 130, third stop portions 132 are respectively provided at both ends of the support seat 130 along the second horizontal direction Dh2. The third stop portions 132 are located on the outer side of the side frame 120 and protrude from the upper surface of the support seat 130 along the vertical direction Dv, in order to prevent the side frame 120 from moving away from the receiving space 101a along the second horizontal direction Dh2.

[0108] Optionally, the first limiting part 151 and the second limiting part 152 described above are made as a single piece.

[0109] Optionally, the support column 142 is welded to the bearing seat 130.

[0110] Optionally, the cross-section of the support column 142 is the same as the cross-section of the column 121, or the outer contour of the cross-section of the support column 142 is the same as the outer contour of the cross-section of the column 121. In a plane perpendicular to the vertical direction Dv, the orthographic projection of the support column 142 coincides with the orthographic projection of the column 121.

[0111] Optionally, the fastening connector 122 is a bolt. By tightening the bolt, the stability of the connection between the corner limiter 150 and the side frame 120 can be further ensured.

[0112] In other embodiments, the pallet box having structures such as side frame 120 and box door 110 may not be limited to cage pallet boxes.

[0113] In some embodiments not shown, the pallet box 101 is a column-type pallet box. Goods inlets and outlets are formed at both ends of the pallet box 101 along the first horizontal direction Dh1. These goods inlets and outlets constitute the aforementioned goods entry / exit portion. When two adjacent pallet boxes 101 are connected by the connecting assembly 102, the accommodating spaces 101a of the two adjacent pallet boxes 101 are interconnected. In other words, as long as the two column-type pallet boxes to be connected are placed side-by-side and their goods inlets and outlets are aligned, the connection and expansion of the two column-type pallet boxes can be quickly achieved by installing the connecting assembly 102.

[0114] See Figures 1 to 10 In some embodiments, each set of connecting components 102 includes a first connecting component 103 and a second connecting component 104. The first connecting component 103 is located above the support 130, such as... Figures 2 to 4 As shown. The first connecting component 103 can be understood as the connecting component 102 of the first embodiment described above, such as... Figure 5 As shown. The second connecting assembly is located below the support 130, as... Figures 2 to 4 As shown. The second connecting component can be understood as the connecting component 102 of the second embodiment described above, such as... Figure 8 As shown. The pallet box 101 also includes a support column 142 and a support leg 141. The support column 142 and the support leg 141 constitute the aforementioned support leg 140 or are part of the aforementioned support leg 140. The support column 142 is provided protruding along the vertical direction Dv on the lower surface of the support base 130. The support column 142 is arranged corresponding to the column 121 along the vertical direction Dv. The support leg 141 is connected to the bottom end of the support column 142. The support leg 141 protrudes from the circumferential outer surface of the support column 142. The support leg 141 is spaced apart from the support base 130 along the vertical direction Dv. A second connecting assembly 104 is provided between the support leg 141 and the support base 130. The second connecting assembly 104 is used to connect adjacent support columns 142. In a plane perpendicular to the vertical direction Dv, the orthographic projection of the second connecting assembly 104 coincides with the orthographic projection of the support leg 141. By placing the second connecting component 104 between the support leg 141 and the bearing seat 130, the support leg 141 and the bearing seat 130 can limit the second connecting component 104 in the vertical direction Dv, thereby preventing the second connecting component 104 from swaying in the cargo loading device 100 in the vertical direction Dv, and thus improving the structural stability of the cargo loading device 100.

[0115] Optionally, the first connecting component 103 can be understood as a connecting component 102 that does not include the aforementioned support portion 261a, clearance groove 261b, and other structures. The second connecting component 104 can be understood as a connecting component 102 that includes the aforementioned support portion 261a, clearance groove 261b, and other structures.

[0116] Optionally, the aforementioned support leg 141 can be a structure such as a buckle cup to increase the contact area between the pallet box 101 and the ground or other supporting surfaces.

[0117] See Figures 2 to 4 , Figure 8 as well as Figure 9In some embodiments, the cross-sectional area of ​​the support leg 141 increases from top to bottom in the vertical direction Dv. In the second connecting assembly 104, the first wing 262 is located between the support base 130 and the top surface of the support leg 141. The bottom end of the first base 261 includes a support portion 261a protruding relative to the lower surface of the first wing 262. The support portion 261a is adapted to abut against the support leg 141. By providing the support portion 261a, the connection point and contact area between the first connecting member 260 and the support leg 141 can be increased, thereby improving the load-bearing capacity of the connection structure between the second connecting assembly 104 and the two connected pallet boxes 101.

[0118] Optionally, the outer contour of the support leg 141 is square. The support leg 141 is generally conical.

[0119] See Figure 8 and Figure 9 In some embodiments, in the second connecting assembly 104, a pair of clearance grooves 261b are formed on the top of the first connecting member 260. The pair of clearance grooves 261b are located on both sides of the first connecting portion 263. By providing clearance grooves 261b on the top of the first connecting member 260, it is helpful to avoid the weld bead located between the support 130 and the column 121.

[0120] Furthermore, the first connecting portion 263 protrudes partially from the top surface of the first base 261 in the vertical direction Dv. The top surface of the first wing 262 is flush with the top surface of the first base 261. A clearance groove 261b is formed between the top surface of the first wing 262, the top surface of the first base 261, and the adjacent first connecting portion 263. Compared to providing the clearance groove 261b only locally at the connection between the corresponding bearing seat 130 and the column 121 of the first connecting member 260, this increases the arrangement range of the clearance groove 261b, thereby enhancing the adaptability to welds with different distribution ranges.

[0121] See Figure 9 In some embodiments, in the second connecting assembly 104, opposing surfaces of a pair of first wings 262 extend along a first direction D1 to form limiting bosses 262a. The limiting bosses 262a are located at the bottom ends of the first wings 262. The limiting bosses 262a support the second wings 272 of the second connecting member 270. When the first connecting member 260 with the limiting bosses 262a and the corresponding second connecting member 270 are mounted between the underside of the support 130 and the leg 141, the limiting bosses 262a and the support 130 together limit the second connecting member 270 in a third direction D3.

[0122] Continue reading Figure 9In some embodiments, in the second connecting assembly 104, two limiting bosses 262a are formed on the opposing surfaces of a pair of first wings 262 extending along a first direction D1. The two limiting bosses 262a are located at both ends of the first wings 262 along a third direction D3. The second wing 272 is adapted to be arranged between the two limiting bosses 262a. When the first connecting member 260 and the second connecting member 270 are assembled and connected, the second wing 272 is limited between the two limiting bosses 262a.

[0123] See Figures 2 to 4 In some embodiments, each set of connecting components 102 includes at least two first connecting components 103 and one second connecting component 104. This enables reliable connection of the portion of the pallet box 101 above the support 130 and the portion below the support 130, thereby improving the overall structural stability and load-bearing capacity of the loading device 100.

[0124] See Figure 2 In some embodiments, the loading device 100 includes two pallet boxes 101 and two sets of connecting assemblies 102. With the two pallet boxes 101 connected by the two sets of connecting assemblies 102, the overall dimensions of the two pallet boxes 101 along the first horizontal direction Dh1 are adapted to the inner width of a standard shipping container.

[0125] In other embodiments, the loading device 100 includes two or more pallet boxes 101 and two or more sets of coupling assemblies 102. The number of pallet boxes 101 is the same as the number of sets of coupling assemblies 102.

[0126] In other embodiments, the size of pallet box 101 along the first horizontal direction Dh1 is equal to the size of pallet box 101 along the second horizontal direction Dh2.

[0127] Furthermore, the dimensions of pallet box 101 along the first horizontal direction Dh1 and the dimensions of pallet box 101 along the second horizontal direction Dh2 are both half the inner width of a standard container.

[0128] See Figures 1 to 4 In some embodiments, the pallet box 101 further includes support legs 140. Support legs 140 are connected to the support base 130. Support legs 140 protrude vertically (Dv) from the lower surface of the support base 130. The lower end of the support legs 140 has a foot 141. When two adjacent pallet boxes 101 are connected by two sets of connecting assemblies 102, the adjacent feet 141 of the two adjacent pallet boxes 101 abut against each other in a first horizontal direction (Dh1). This further increases the load-bearing capacity of the loading device 100 by increasing the number of stress points through the abutment of adjacent feet 141, in addition to connecting the two adjacent pallet boxes 101 by the connecting assemblies 102.

[0129] See Figure 2 and Figure 4 Optionally, for cage-type pallet boxes, a discharge through-hole 126 can be provided at the lower part of the side frame 120. The discharge through-hole 126 is used for pipes, connectors, and other structures to pass through. For example, when the cage-type pallet box is used to hold bagged liquid goods such as asphalt, a discharge connector is usually provided at the bottom of the bag to facilitate loading, unloading, or retrieval of the goods. After the goods are loaded into the cage-type pallet box, the discharge connector can be passed through the discharge through-hole 126. In this way, when it is necessary to discharge or use asphalt, it is not necessary to remove the entire bag; the discharge connector can be opened directly. At the same time, the door 110 and side frame 120 of the cage-type pallet box can maintain the overall shape of the bagged goods.

[0130] See Figures 1 to 4 In a preferred embodiment of this application, the connecting assembly 102 is preferably used for the expansion connection of cage-type pallet boxes. This utilizes the structural advantages of the upper and lower limit of the wire mesh in the cage-type pallet box. The connecting assembly 102 consists of a first connecting member 160, a second connecting member 170, and a locking member 180. The advantage of this design is that the original pallet box 101 does not require modification or tools, and installation is convenient. Simply insert the first connecting member 160 and the second connecting member 170 into the appropriate positions of the wire mesh, insert the two adjacent uprights 121 of the two pallet boxes 101 into the limiting holes 102a formed between the first connecting member 160 and the second connecting member 170, align the first connecting holes 163a and the second connecting holes 173a, and then insert the locking member 180 into the first connecting holes 163a and the second connecting holes 173a. This structure significantly shortens the operation time for connecting (disassembling) the pallet box 101, ensures the overall stability and strength of the rack after connection, and ensures reliable use of the product in harsh environments.

[0131] The first connecting component 160 is a cast iron part made of high-strength cast iron, providing excellent structural strength and durability to ensure reliable connection. The second connecting component 170 is a bent part made of precision-bent metal sheet. The bent part can mate with the cast iron part to form a locking structure. The locking component 180 uses a steel ball pin. The steel ball pin is a high-precision machined steel pin. The steel ball pin acts as a limiting component or fastener between the cast iron part and the bent part, making the locking structure more reliable and stable. Through the limiting action of the steel ball pin, the cast iron part and the bent part can quickly form a stable locking structure. This innovative design makes the installation process extremely simple; the operator only needs to align the connecting component 102 with the preset installation position to quickly complete the installation, improving work efficiency.

[0132] The dimensions of the bent parts and cast iron parts along the third direction D3 are adapted to the dimensions of the wire mesh along the vertical direction Dv, ensuring the stability and reliability of the connector after installation. When the pallet box 101 that needs to be expanded is a column 121 type pallet box or a frame type pallet box 101, a structure with a locking function adapted to the height of the connector 102 needs to be added to the upper and lower sides of the predetermined installation position of the connector 102. The width design of the bent parts and cast iron parts is adapted to the distance between the lower surface of the support 141 and the bearing seat 130, thereby ensuring the stability and reliability of the connector 102 after installation on two adjacent pallet boxes 101. The two limiting holes 102a formed after the bent parts and cast iron parts are interlocked provide assembly space for the columns 121 connecting the adjacent surfaces of the two pallet boxes 101. The bent part and the cast iron part are interlocked until the second connecting hole 173a on the bent part is aligned with the first connecting hole 163a on the cast iron part. Then, the steel ball pin is inserted from top to bottom until it is fully locked.

[0133] It is worth mentioning that this application fully considered practical application scenarios during the design process. The length of the two sets of pallet boxes 101 connected together is exactly matched with the width of a standard container. This ingenious design allows overseas users to make full use of the internal space of the container and improve transportation efficiency.

[0134] Overall, the technical solution proposed in this application can significantly improve the adaptability of a single container to a variety of contents, not only greatly reducing the economic and time costs for users, but also greatly improving logistics turnover efficiency, bringing a revolutionary solution to the industry.

[0135] The pallet box 101 used in this application is not limited to cage pallet boxes and upright pallet boxes. Other pallet boxes 101 can also be used as long as they have uprights 121 at the four corners that can be used for multi-layer stacking.

[0136] In an embodiment of the loading device 100, taking the connection of two pallet boxes 101 as an example, the structure is as follows: the two pallet boxes 101 are stably connected by two sets of connecting components, one set of connecting components 102 is located at one end of the pallet box 101 along the second horizontal direction Dh2, and the other set of connecting components 102 is located at the other end of the pallet box 101 along the second horizontal direction Dh2. The two sets of connecting components 102 are arranged opposite to each other, for example, symmetrically. This arrangement helps to ensure the stability and reliability of the connection between the two pallet boxes 101.

[0137] When connecting two pallet boxes 101, if the connecting side of the two pallet boxes 101 has a door 110: the foldable door 110 needs to be folded and placed on the bottom plane inside the box; the detachable door 110 needs to be removed to facilitate the installation of the connecting assembly 102 and the tight connection of the pallet boxes 101.

[0138] In one embodiment, the pallet box expansion method includes the following steps:

[0139] Step 1: Fold the foldable side frames of the two pallet boxes 101 to be connected into the box body (foldable box door 110), or remove the box door 110 of the two pallet boxes 101 to be connected (removable box door 110).

[0140] Step 2: Install the connecting assembly 102 directly at the predetermined installation positions of the two pallet boxes 101. Taking a cage-type pallet box as an example, the predetermined installation positions include parts of the square grid 125, the positions between the support legs 141 and the support base 130, etc.

[0141] It is important to ensure the flatness and stability of the connecting component 102 at the predetermined installation location.

[0142] In this application, a single connecting component 102 can be viewed as a unit module. This modular design not only improves the versatility of the connecting component 102 but also simplifies the installation process. Any set of connecting components 102 used to connect two pallet boxes 101 can include connecting components 102 with different structural forms to better adapt to the structure of the corresponding installation location.

[0143] Overall, the design of the connection component 102 fully embodies the engineering philosophy of "simple yet sophisticated". While ensuring connection strength and reliability, it can greatly simplify the installation process and provide an efficient and reliable solution for the rapid connection of the pallet box 101.

[0144] It should be noted that the structural forms of the first connecting member 160 and the second connecting member 170 in this connecting assembly 102 are not limited to the structural forms described above. More structural forms can be obtained by adaptively modifying or transforming the above structural forms. The first connecting member 160 can be made of cast iron, or other processing methods or materials besides cast iron. Crucially, the first connecting member 160 and the second connecting member 170 possess the ability to be nested and combined, and after being locked by the locking member 180, they provide a reliable and stable expansion method for connecting the two pallet boxes 101.

[0145] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “setup” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0146] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A connecting assembly for connecting two pallet boxes, the pallet boxes comprising uprights and support legs, characterized in that, The connection component includes: The first connector includes a first base, a pair of first wings, and a first connecting portion. The pair of first wings are respectively located at both ends of the first base along a first direction. The first connecting portion is located between the pair of first wings and is spaced apart from the pair of first wings along the first direction. The first connecting portion has a first connecting hole. The pair of first wings and the first connecting portion both protrude from the same side of the first base along a second direction, which is perpendicular to the first direction. The second connecting member is arranged opposite to the first connecting member along the second direction. The second connecting member includes a second base, a pair of second wings, and a second connecting portion. The pair of second wings are respectively located at both ends of the second base along the first direction. The second connecting portion is located between the pair of second wings and is spaced apart from the pair of second wings along the first direction. The second connecting portion has a second connecting hole. The pair of second wings and the second connecting portion both protrude from the same side of the second base along the second direction. The pair of second wings are located between the pair of first wings along the first direction. The pair of second wings and the pair of first wings are stacked one-to-one correspondingly along the first direction. The second connecting portion is aligned with the first connecting portion. The second connecting member and the first connecting member enclose two limiting holes suitable for accommodating the column or the support leg. The two limiting holes are located on both sides of the first connecting portion and the second connecting portion along the second direction. A locking element, which is detachably connected to the first connection hole and the second connection hole.

2. The connecting component according to claim 1, characterized in that, The cross-sectional area of ​​the first base perpendicular to the first direction is greater than the cross-sectional area of ​​the second base perpendicular to the first direction; The cross-sectional area of ​​the first wing perpendicular to the second direction is greater than the cross-sectional area of ​​the second wing perpendicular to the second direction.

3. The connecting component according to claim 2, characterized in that, The first wing is a plate-like structure. The dimension of the first wing along a third direction is greater than the dimension of the first wing along the first direction. The third direction is perpendicular to the first direction and the second direction. The second wing is a plate-like structure, and the dimension of the second wing along the third direction is larger than the dimension of the second wing along the first direction; The dimension of the first wing along the third direction is greater than or equal to the dimension of the second wing along the third direction.

4. The connecting component according to claim 2, characterized in that, The first base is a plate-like structure, and the dimension of the first base along the second direction is larger than the dimension of the second base along the second direction; The first wing is a plate-like structure, and the dimension of the first wing along the first direction is greater than the dimension of the second wing along the first direction.

5. The connecting component according to claim 4, characterized in that, The dimension of the first wing along the second direction is smaller than the dimension of the second wing along the second direction.

6. The connecting component according to claim 1, characterized in that, The first connecting member is constructed as a casting; and / or The second connecting member is constructed as a sheet metal part; and / or The locking element is configured as a pin.

7. The connecting component according to claim 1, characterized in that, The number of the first connecting parts is one pair, and the pair of first connecting parts are arranged at intervals along a third direction, which is perpendicular to the first direction and the second direction; The number of the second connecting parts is one pair, and the pair of second connecting parts are arranged at intervals along the third direction; A pair of first connecting portions and a pair of second connecting portions are arranged in a one-to-one correspondence, and the first connecting portions and the adjacent second connecting portions are stacked along the third direction.

8. The connecting component according to claim 7, characterized in that, A pair of first connecting portions are located between a pair of second connecting portions along the third direction, or a pair of second connecting portions are located between a pair of first connecting portions along the third direction; and / or The first connecting part is a plate-shaped structure, and the dimension of the first connecting part along the third direction is greater than the dimension of the second connecting part along the third direction.

9. The connecting component according to any one of claims 1 to 8, characterized in that, The bottom end of the first base includes a support portion protruding relative to the lower surface of the first wing, the support portion being adapted to abut against the legs of the pallet box; and / or The top of the first connector has a clearance groove; and / or A limiting boss is formed on the opposing surfaces of a pair of first wings extending along the first direction. The limiting boss is located at the bottom end of the first wing and is used to support the second wing of the second connector.

10. A cargo-carrying device, characterized in that, The cargo-carrying device includes: At least two pallet boxes, each pallet box including a support base and four uprights, the outer contour of the support base being square, the four uprights being respectively connected to the four corners of the support base, the pallet boxes having open or operable cargo entry and exit parts at both ends along a first horizontal direction, and at least two pallet boxes being arranged along the first horizontal direction; At least two sets of connecting components according to any one of claims 1 to 9 are arranged between two adjacent pallet boxes. The two sets of connecting components are respectively located at both ends of the two pallet boxes along a second horizontal direction, which is perpendicular to the first horizontal direction. Each set of connecting components includes at least two connecting components, which are spaced apart along a vertical direction, which is perpendicular to both the first and second horizontal directions. The two limiting holes of each connecting component are respectively used to accommodate two adjacent uprights of the two adjacent pallet boxes, thereby connecting the two adjacent pallet boxes into a single unit. The accommodating spaces of two adjacent pallet boxes are connected to each other through the open cargo inlet / outlet, or the accommodating spaces of two adjacent pallet boxes are connected to each other when the cargo inlet / outlet of two adjacent pallet boxes is open. With the connecting component installed to the adjacent pallet box, the first direction is consistent with the first horizontal direction, and the second direction is consistent with the second horizontal direction.

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