Double-unit interlocking stacking structure

Abstract

The invention relates to the technical field of box stacking, in particular to a double-unit interlocking stacking structure which comprises a locking device and at least two packaging boxes, the top of each packaging box is provided with an upper connector unit, and the bottom of each packaging box is provided with a lower connector unit. Every two adjacent packaging boxes are arranged in a stacked mode through the lower connector unit of the upper packaging box and the upper connector unit of the lower packaging box, the upper connector unit is provided with a containing space used for being connected with the lower connector unit in a clamped mode, and the locking device is used for locking the lower connector unit and the upper connector unit. The locking device comprises a main rod, a clamping plate and an elastic piece, the elastic piece is arranged between the clamping plate and the main rod, the clamping plate rotates to the position perpendicular to the main rod and is used for locking the lower interface unit and the upper interface unit, and the elastic piece is used for always applying acting force in the first direction to the clamping plate. Therefore, additional fastening rigging is not needed during stacking and fastening, and the transportation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of box stacking, and in particular to a double-unit interlocking stacking structure. Background Art

[0002] Currently, stacking containers on ships is often secured with external chains. This method requires the chains to be pulled outward at a certain angle, requiring a minimum of 400-500mm of space between each stack of containers. This wastes the already limited space on board and reduces transportation efficiency. Furthermore, existing lifting and transport methods often require additional protective measures when using lifting chains, as these can scratch or damage the containers, and in severe cases, even damage them. Furthermore, only one container can be transported at a time.

[0003] For example, application number 202011169332.4 discloses a connecting mechanism for stacking and fixing packaging boxes on ships, which can be used for stacking and connecting packaging boxes, but its structure still cannot solve the problems of mooring and lifting packaging boxes.

[0004] Application No. 201620423900.1 discloses an enhanced positioning and stacking structure for plastic packaging boxes, which can enhance the stability of the upper and lower stacking positioning structure after stacking, but its structure still cannot solve the problems of tying and lifting the packaging boxes. Summary of the Invention

[0005] The object of the present invention is to provide a double-unit interlocking stacking structure to solve the problem of low stacking and transportation efficiency raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a double-unit interlocking stacking structure, which is applied to packaging boxes and includes: a locking device and at least two packaging boxes;

[0008] Each packaging box is provided with an upper interface unit on the top and a lower interface unit on the bottom. Two adjacent packaging boxes are stacked by the lower interface unit of the upper packaging box and the upper interface unit of the lower packaging box, and the upper interface unit is provided with an accommodating space for clamping the lower interface unit. The locking device is used to lock the lower interface unit and the upper interface unit.

[0009] The locking device includes a main rod, a card plate, and an elastic member. The card plate is rotatably arranged at the front end of the main rod. The elastic member is arranged between the card plate and the main rod. When the locking device passes through the lower interface unit and the upper interface unit, the card plate rotates to a position perpendicular to the main rod to lock the lower interface unit and the upper interface unit. The elastic member is used to always apply a force in a first direction to the card plate, and the first direction is the direction in which the card plate points to the other end of the main rod.

[0010] In some embodiments, the upper interface unit includes an upper support frame, a stacking concave plate, and a stacking guide block. The stacking concave plate and the stacking guide block are arranged on the upper support frame, and the upper support frame is installed on the upper surface of the packaging box by installing screws. There are two stacking concave plates, and the two stacking concave plates are spaced apart along the length direction of the upper support frame to form an upper concave socket with an opening facing away from the upper surface of the packaging box. There are multiple stacking guide blocks, and multiple stacking guide blocks are symmetrically arranged on the inner side wall of the upper concave socket. Both of the stacking concave plates are provided with at least one fastening hole, and the axis of any fastening hole of one of the stacking concave plates is provided with a fastening hole that coincides with its axis on the other stacking concave plate.

[0011] In some embodiments, there are multiple locking assemblies, and each fastening hole opened on a stacking concave plate is correspondingly provided with a locking assembly.

[0012] In some embodiments, the lower interface unit includes a lower support frame and a stacking convex plate. The stacking convex plate is arranged on the lower support frame, and the lower support frame is installed on the lower surface of the packaging box by installing screws. There are two stacking convex plates, and the two stacking convex plates are arranged at intervals along the length direction of the lower support frame, and each stacking convex plate has stacking guide surfaces at two ends away from each other on the upper surface, and the stacking guide surfaces cooperate with the stacking guide blocks.

[0013] In some embodiments, the locking device further includes a handle, a retaining ring, and a retaining spring. The handle is arranged at the end of the main rod facing away from the clamping plate. The retaining ring is arranged on the outer circumference of the main rod through the retaining spring, and when the main rod passes through the fastening hole, the retaining ring abuts against the stacking concave plate.

[0014] In some embodiments, the retaining ring is larger than the diameter of the fastening hole.

[0015] In some embodiments, the stacking concave plate is further provided with a plurality of lifting holes, the axes of the plurality of lifting holes are parallel to the central axis of the fastening holes, and the diameter of the lifting holes is larger than the diameter of the fastening holes.

[0016] In some embodiments, the central axes of the plurality of fastening holes of the upper interface unit coincide with the central axes of the plurality of fastening holes of the lower interface unit in a stacked state.

[0017] In some embodiments, the elastic member comprises a compression spring.

[0018] In some embodiments, the width of the card plate is greater than the diameter of the fastening hole, and the thickness of the card plate is less than the diameter of the fastening hole.

[0019] Furthermore, the beneficial effects of the present invention are:

[0020] The present invention adds an upper interface unit and a lower interface unit, and two adjacent packaging boxes are stacked through the lower interface unit of the upper packaging box and the upper interface unit of the lower packaging box. Specifically, the lower interface unit and the upper interface unit at the connection between the two adjacent packaging boxes are clamped together by the stacking guide block and the stacking guide surface on the stacking convex plate, thereby minimizing the installation gap between the two adjacent packaging boxes. When the upper interface unit and the lower interface unit are spliced ​​together, the locking device locks the upper interface unit and the lower interface unit. At the same time, the upper interface unit is also provided with a plurality of lifting holes, so that there is no need to add additional tying rigging during stacking and tying, thereby increasing the storage density on the ship, and multiple boxes can be lifted simultaneously during lifting, thereby improving transportation efficiency.

[0021] In addition, the present invention adopts the upper interface unit lifting method to avoid direct contact between the hook or chain on the lifting chain and the box body, without the need for additional chain protection measures, which greatly reduces the probability of the hook or chain damaging the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the double-unit interlocking stacking structure provided by the present invention;

[0023] Figure 2 A side view of the overall structure of the double-unit interlocking stacking structure provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the upper interface unit in the double-unit interlocking stacking structure provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the lower interface unit in the double-unit interlocking stacking structure provided by the present invention;

[0026] Figure 5 This is a schematic structural diagram of the locking device structure in the double-unit interlocking stacking structure provided by the present invention in the initial state;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0028] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0029] Figure 8 This is a structural schematic diagram of the locking device structure in the double-unit interlocking stacking structure provided by the present invention in a locked state;

[0030] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point C in the middle.

[0031] In the figure: 1-packing box, 2-upper support frame, 3-lower support frame, 4-main rod, 5-lifting ring, 6-limiting slot, 7-handle, 8-stacking concave plate, 9-stacking guide block, 10-mounting screw, 11-fastening hole, 12-lifting hole, 13-stacking convex plate, 14-stacking guide surface, 15-clamping plate, 16-rotating shaft, 17-compression spring, 18-retaining ring, 19-circlip. DETAILED DESCRIPTION

[0032] The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. In the description of the embodiments of the present invention, unless otherwise specified, " / " represents an "or" (or). For example, "A / B" can represent either A or B. "And / or" in the text is merely a description of an association between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, in the description of the embodiments of the present invention, "plurality" refers to two or more. The terms "first" and "second" are used for descriptive purposes only and should not be construed to imply or suggest relative importance or to implicitly specify the number of the technical features indicated. Therefore, features designated "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] like Figures 1-9 As shown, an embodiment of the present invention provides a double-unit interlocking stacking structure, which is applied to a packaging box 1 and includes: a locking device and at least two packaging boxes 1;

[0034] Each packing box 1 is provided with an upper interface unit on the top and a lower interface unit on the bottom. Two adjacent packing boxes 1 are stacked by placing the lower interface unit of the upper packing box 1 and the upper interface unit of the lower packing box 1 on top. The upper interface unit is provided with a receiving space for clamping the lower interface unit, and a locking device is used to lock the lower interface unit and the upper interface unit.

[0035] The locking device includes a main rod 4, a card plate 15, and an elastic member. The card plate 15 is rotatably arranged at the front end of the main rod 4. The elastic member is arranged between the card plate 15 and the main rod 4. When the locking device passes through the lower interface unit and the upper interface unit, the card plate 15 rotates to a vertical position with respect to the main rod 4, and is used to lock the lower interface unit and the upper interface unit. The elastic member is used to always apply a force in a first direction to the card plate 15. The first direction is the direction in which the card plate 15 points to the other end of the main rod 4. The upper interface unit includes an upper support frame 2, a stacking concave plate 8, and a stacking guide block 9. The stacking concave plate 8 and the stacking guide block 9 are arranged on the upper support frame 2. The upper support frame 2 is installed on the packaging box by installing screws 10. 1, there are two stacking concave plates 8, which are spaced apart along the length direction of the upper support frame 2 to form an upper concave socket with an opening facing away from the upper surface of the packaging box 1, and there are multiple stacking guide blocks 9, which are symmetrically arranged on the inner side wall of the upper concave socket. The two stacking concave plates 8 are each provided with at least one fastening hole 11, and the axis of any fastening hole 11 of one of the stacking concave plates 8 is provided on the other stacking concave plate 8 with a fastening hole 11 that coincides with its axis. The lower interface unit includes a lower support frame 3 and a stacking convex plate 13. The stacking convex plate 13 is provided on the lower support frame 3, and the lower support frame 3 is installed by installing screws 10 Mounted on the lower surface of the packing box 1, there are two stacking convex plates 13, which are spaced apart along the length direction of the lower support frame 3, and each stacking convex plate 13 has two ends on the upper surface thereof which are away from each other and are provided with stacking guide surfaces 14, which cooperate with the stacking guide blocks 9, and the elastic member includes a compression spring 17. In the above structure, when the packing box 1 needs to be stacked, firstly, the single-layer or multi-layer packing box 1 is hoisted to the corresponding position on the cabin floor, the stacking concave plate 8 of the packing box 1 and the stacking convex plate 13 are aligned with each other, the packing box 1 is slowly lowered, and the stacking guide blocks 9 and the stacking guide surfaces 14 are used to make the stacking convex plate 13 fall into the stacking concave plate 8, and the stacking is completed. Stacking operation, under the action of the stacking guide block 9 and the stacking guide surface 14, the hole axes of the fastening holes 11 in the upper interface unit and the lower interface unit are located in a straight line. At this time, the locking device passes through multiple fastening holes 11 in sequence, and the card plate 15 is manually rotated 90° through the rotating shaft 16 to align it with the main rod 4. In the case of multiple locking devices, each card plate 15 in the multiple locking devices is rotated 90° through the rotating shaft 16 to align it with the main rod 4. The card plate 15 completes the fastening between the packaging box 1 and the packaging box 1 under the action of the compression spring 17, and the lifting tool is used to connect the lifting hole 12 and the lifting ring 5 to complete the lifting of the multi-layer or single-layer packaging box 1.

[0036] In this embodiment, it is worth noting that when a multi-layer or single-layer packaging box 1 is placed on the cabin floor, the cabin floor is also installed with a structure similar to the upper interface unit in the packaging box 1 to match the packaging box 1 located at the bottom. After it is locked by the locking device, it can be moored in the cabin to improve stability. When lifting, the angle of the clamping plate 15 in the locking device is reversed to unlock the packaging box 1 and the cabin floor or the packaging box 1 and the packaging box 1, and the lifting tools are used to connect the lifting holes 12 to complete the lifting of the multi-layer or single-layer packaging box 1.

[0037] In one possible implementation, there are multiple locking assemblies, and each fastening hole 11 opened on a stacking concave plate 8 is correspondingly provided with a locking assembly. The distributed layout of multiple locking assemblies effectively improves the stability of the connection between the multi-layer or single-layer packaging box 1 and the cabin floor.

[0038] The present invention adds an upper interface unit and a lower interface unit, and two adjacent packaging boxes 1 are stacked by the lower interface unit of the upper packaging box 1 and the upper interface unit of the lower packaging box 1. Specifically, the lower interface unit and the upper interface unit at the connection between the two adjacent packaging boxes 1 are connected by the stacking guide block 9 and the stacking guide surface 14 on the stacking convex plate 13, thereby minimizing the installation gap between the two adjacent packaging boxes 1. When the upper interface unit and the lower interface unit are spliced, the locking device locks the upper interface unit and the lower interface unit. At the same time, the upper interface unit is also provided with a plurality of lifting holes 12, so that no additional tying rigging is required for stacking and tying, thereby increasing the storage density on the ship, and multiple boxes can be lifted simultaneously during lifting, thereby improving transportation efficiency.

[0039] In one possible implementation, the locking device also includes a handle 7, a retaining ring 18, and a retaining spring 19. The handle 7 is arranged at the end of the main rod 4 away from the card plate 15. The retaining ring 18 is arranged on the outer circumference of the main rod 4 through the retaining spring 19. When the main rod 4 passes through the fastening hole 11, the retaining ring 18 abuts against the stacking concave plate 8. The size of the retaining ring 18 is larger than the aperture of the fastening hole 11, so that the retaining ring 18 can cooperate with the card plate 15 to improve the stability of locking the lower interface unit and the upper interface unit. At the same time, the retaining spring 19 limits the retaining ring 18 structure to prevent the pin from accidentally falling out in wind and waves.

[0040] In this embodiment, a limiting groove 6 is further provided on the main rod 4. After the main rod 4 is inserted into the fastening hole 11, the limiting groove 6 can limit the maximum insertion distance of the main rod 4 to ensure that the main rod 4 does not excessively protrude from the fastening hole 11.

[0041] In one possible implementation method, a plurality of lifting holes 12 are further provided on the stacking concave plate 8, the axes of the plurality of lifting holes 12 are parallel to the central axis of the fastening holes 11, and the aperture of the lifting holes 12 is larger than the aperture of the fastening holes 11, wherein the aperture of the lifting holes 12 is larger than the aperture of the fastening holes 11, so that the packaging box 1 can be lifted with a more convenient lifting device. In addition, the present application also provides a lifting ring 5 on the lower support frame 3 to assist in lifting the packaging box 1 together with the lifting holes 12, thereby improving the stability of the lifting.

[0042] In one possible implementation method, the central axes of the multiple fastening holes 11 of the upper interface unit coincide with the central axes of the multiple fastening holes 11 of the lower interface unit in the stacked state, and the lifting holes 12 and the fastening holes 11 are designed with different apertures to avoid accidents caused by misoperation of the lifting equipment into the fastening holes 11. At the same time, the multiple fastening holes 11 are coaxially arranged to ensure the stability of the main rod 4 during the insertion process.

[0043] In one possible implementation method, the width of the card plate 15 is greater than the diameter of the fastening hole 11, and the thickness of the card plate 15 is less than the diameter of the fastening hole 11. The present invention adopts an upper interface unit lifting method to avoid direct contact between the hook or chain on the lifting chain and the box body, and there is no need to add additional chain protection measures, which greatly reduces the probability of the hook or chain damaging the box body.

[0044] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A double-unit interlocking stacking structure, applied to packaging boxes, characterized in that: include: Locking device and at least two packaging boxes; Each packaging box is provided with an upper interface unit on the top and a lower interface unit on the bottom. Two adjacent packaging boxes are stacked by the lower interface unit of the upper packaging box and the upper interface unit of the lower packaging box, and the upper interface unit is provided with an accommodating space for clamping the lower interface unit. The locking device is used to lock the lower interface unit and the upper interface unit. The locking device includes a main rod, a card plate, and an elastic member. The card plate is rotatably arranged at the front end of the main rod. The elastic member is arranged between the card plate and the main rod. When the locking device passes through the lower interface unit and the upper interface unit, the card plate rotates to a position perpendicular to the main rod to lock the lower interface unit and the upper interface unit. The elastic member is used to always apply a force in a first direction to the card plate, and the first direction is the direction in which the card plate points to the other end of the main rod.

2. The double-unit interlocking stacking structure according to claim 1, characterized in that: The upper interface unit includes an upper support frame, a stacking concave plate, and a stacking guide block. The stacking concave plate and the stacking guide block are arranged on the upper support frame, and the upper support frame is mounted on the upper surface of the packaging box by mounting screws. There are two stacking concave plates, and the two stacking concave plates are spaced apart along the length direction of the upper support frame to form an upper concave socket with an opening facing away from the upper surface of the packaging box. There are multiple stacking guide blocks, and multiple stacking guide blocks are symmetrically arranged on the inner side walls of the upper concave socket. Both of the two stacking concave plates are provided with at least one fastening hole, and the axis of any fastening hole of one of the stacking concave plates is provided with a fastening hole coinciding with its axis on the other stacking concave plate.

3. The double-unit interlocking stacking structure according to claim 2, characterized in that: There are multiple locking assemblies, and each fastening hole opened on a stacking concave plate is correspondingly provided with a locking assembly.

4. The double-unit interlocking stacking structure according to claim 3, characterized in that: The lower interface unit includes a lower support frame and a stacking convex plate. The stacking convex plate is arranged on the lower support frame, and the lower support frame is installed on the lower surface of the packaging box by installing screws. There are two stacking convex plates, and the two stacking convex plates are arranged at intervals along the length direction of the lower support frame. Stacking guide surfaces are provided at two ends of the upper surface away from each other, and the stacking guide surfaces cooperate with the stacking guide blocks.

5. The double-unit interlocking stacking structure according to claim 3, characterized in that: The locking device also includes a handle, a retaining ring, and a retaining spring. The handle is arranged at one end of the main rod away from the clamping plate. The retaining ring is arranged on the outer circumference of the main rod through the retaining spring, and when the main rod passes through the fastening hole, the retaining ring abuts against the stacking concave plate.

6. The double-unit interlocking stacking structure according to claim 5, characterized in that: The size of the retaining ring is larger than the hole diameter of the fastening hole.

7. The double-unit interlocking stacking structure according to claim 6, characterized in that: The stacking concave plate is further provided with a plurality of lifting holes, the axes of the plurality of lifting holes are parallel to the central axis of the fastening holes, and the apertures of the lifting holes are larger than the aperture of the fastening holes.

8. The double-unit interlocking stacking structure according to claim 1, characterized in that: The central axes of the multiple fastening holes of the upper interface unit and the central axes of the multiple fastening holes of the lower interface unit coincide with each other in a stacked state.

9. The double-unit interlocking stacking structure according to claim 1, characterized in that: The elastic member includes a compression spring.

10. The double-unit interlocking stacking structure according to claim 1, characterized in that: The width of the clamping plate is greater than the diameter of the fastening hole, and the thickness of the clamping plate is less than the diameter of the fastening hole.

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