Cross beam, shelving rack system with cross beam, and use of cross beam

Abstract

A cross beam (2), comprising a cross beam body, wherein the cross beam body is partially bent to form a closed cavity (21), and the closed cavity (21) has a support surface for bearing a shelf (3), with the cross section of the closed cavity (21) being polygonal. The cross beam (2) is formed by means of the closed cavity (21), thereby increasing the overall load-bearing capacity and strength thereof. Further disclosed are a shelving rack system with the cross beam (2), and the use of the cross beam (2).

Description

Beams, shelving systems containing beams, and applications of beams Technical Field

[0001] This invention relates to the field of beam technology in storage racks, and more particularly to beams, rack systems containing beams, and applications of beams. Background Technology

[0002] Existing shelving units typically consist of beams, uprights, and shelves. The connection strength between the beams and uprights directly affects the load-bearing capacity and stability of the shelving unit. Currently, most shelving units on the market use a semi-enclosed beam-upright connection structure. This design is simple and low-cost, but it has the following problems in practical use:

[0003] 1) Limited load-bearing capacity, especially the limited connection surface area of ​​the semi-enclosed design, which leads to local stress concentration. This makes it prone to cracks or bending during long-term use, and easily causes structural failure due to local stress concentration.

[0004] 2) Poor stability and reduced stress surface. For example, the rigidity of a semi-triangle is insufficient. The overall structure is prone to swaying and tilting after being subjected to force, which in turn makes the connection points prone to loosening or deformation.

[0005] 3) The sloping side of the traditional beam does not reach the bottom layer, which obstructs the transmission of vertical force of the beam. As a result, the triangular structure is not reasonably distributed in terms of force and there is a risk of center of gravity shift.

[0006] 4) The traditional beam is essentially made by bending a plate to form a semi-enclosed triangular structure, with an overall load-bearing capacity (using 0.3mm plate) between 50-100kg. Summary of the Invention

[0007] The purpose of this invention is to provide a beam with a closed cavity, which increases the overall load-bearing strength, thereby improving the overall strength and load-bearing capacity of the assembled shelving system, and finally applying it to bookshelves so that the bookshelves can hold more books.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0009] A crossbeam includes a crossbeam body, wherein the crossbeam body is partially bent to form a closed cavity, and a support surface for supporting a partition is formed on the closed cavity;

[0010] The cross-section of the enclosed cavity is polygonal.

[0011] Furthermore, the main body of the beam also includes a baffle that is connected to the closed cavity and extends outward through the closed edge of the closed cavity, wherein the side of the baffle away from the closed cavity is bent toward the closed cavity to form a first bent edge.

[0012] Furthermore, the first bent edge and the closed cavity are located on the same side of the baffle, and the first bent edge and the baffle form a groove with the opening facing the closed cavity or a double-layer structure in which the two are attached.

[0013] Furthermore, the first bent edge and the closed cavity are located on the same side of the baffle, and the first bent edge and the baffle are welded to form a double-layer structure.

[0014] Furthermore, the connection between the enclosed cavity and the baffle is bent to form a second bent edge that is welded to the baffle, or the enclosed edge located at the closure of the enclosed cavity is bent toward the inside of the enclosed cavity to form the second bent edge, and the second bent edge is located inside the enclosed cavity or extends out of the enclosed cavity.

[0015] Furthermore, the main body of the crossbeam is formed by bending the plate to form the closed cavity, which forms a support compartment and a connecting compartment that are connected to each other. The two ends of the plate are bent at the connection point to form the closure of the closed cavity. The closure forms a double-sided support part, and an oblique reinforcing rib is provided near the closure.

[0016] Furthermore, the oblique reinforcing rib is located between the connecting compartment and the closure, and the oblique reinforcing rib forms a force-bearing surface.

[0017] Furthermore, the connecting compartment forms an inverted U-shaped structure, and the closure is located on the side of the inverted U-shaped structure and is positioned close to the support surface on the support compartment.

[0018] Furthermore, the bilateral support portion has an L-shaped structure, which includes a support side and a connecting side, and the support side and / or the connecting side has a double-layer structure.

[0019] Furthermore, in the L-shaped structure, when both the supporting side and the connecting side are double-layered structures or the connecting side is double-layered, the end of the connecting compartment is located at the bottom of the end of the supporting compartment;

[0020] When the connecting edge is double-layered, the end of the plate constituting the support compartment forms a semi-enclosed cavity, and the end of the plate constituting the connecting compartment is located inside the semi-enclosed cavity.

[0021] Furthermore, reinforcing ribs are formed on the closed edge of the closed cavity, which are recessed or protruding towards the inside of the closed cavity. The supporting surface is subjected to the stress of the partition and / or the items on the partition, forming a stress-bearing area. The reinforcing ribs cause the stress to change from a point concentration tendency to a line concentration or surface concentration tendency.

[0022] Furthermore, the reinforcing rib is an enlarged diameter groove with a gradually widening opening, and the opening of the enlarged diameter groove is connected to the closed edge.

[0023] Furthermore, the enclosed cavity includes at least three enclosed sides, and adjacent enclosed sides are connected by a first stress dispersion surface.

[0024] On the other hand, the shelving system includes the beams as described above, and uprights for assembling the beams, the uprights forming a cavity structure, the cavity structure forming at least two layers of loop structure along the cross-section of the assembly direction with the beams.

[0025] Furthermore, the loop structure forms a semi-enclosed structure, and several of the assembly parts are located on the inner wall of the semi-enclosed structure.

[0026] Furthermore, the assembly parts are provided in at least two directions within the semi-enclosed structure.

[0027] Furthermore, the circuit structure is a closed circuit, which is formed by integral bending and welding. The weld joint forms at least a double-layer weld or a single-layer spot weld after bending. The double-layer weld makes the weld joint form at least two paths for dispersing force transmission.

[0028] Furthermore, the double-layer structure includes an inner layer and an outer layer integrally bent and welded together, and the inner layer and the outer layer are connected by a first curved surface.

[0029] Furthermore, it also includes a stepped reinforcement structure located in the inner layer and / or at the intersection of two directions in a closed loop.

[0030] Furthermore, the column is formed by bending a bending member, the end of which is bent to form the stepped reinforcing structure, or the end of the bending member overlaps the overlapping surface formed by the stepped reinforcing structure; or the stepped reinforcing structure overlaps the bend at the end of the bending member.

[0031] Thirdly, the application of beams, specifically their application in bookcases.

[0032] The beneficial effects of this invention are as follows:

[0033] In this invention, by selecting a beam that forms a closed cavity, and thus adopting a fully enclosed design compared to a single-layer design, the area connecting the columns is significantly increased, forming a closed mechanical circuit. Then, a double-bending process is incorporated internally, adding supporting structures at key connection points and vertical stress areas to disperse the external force transmission path and avoid localized stress concentration. These improvements increase the beam's load-bearing capacity and ultimate load-bearing capacity, while also increasing shear resistance and reducing bending and deformation of the beam under stress.

[0034] The column in this invention is improved from an open cross-section to a fully enclosed closed cross-section, with multi-point support achieved through double-layer bending. A second layer of bent support plate is added inside the column, and the force path is optimized through double-layer connection, increasing the contact area and thus extending the overall shear resistance and fatigue life.

[0035] In this invention, the crossbeams of the entire shelving system adopt an asymmetrical triangular design, and the center of gravity distribution is more rationally distributed through mechanical optimization. This improves the adaptability of the entire system, making it suitable for various scenarios such as home, warehouse, and industrial applications. Attached Figure Description

[0036] Figure 1 is one of the structural schematic diagrams of the crossbeam provided by the present invention;

[0037] Figure 2 is a second schematic diagram of the crossbeam provided by the present invention;

[0038] Figure 3 is a third schematic diagram of the crossbeam provided by the present invention;

[0039] Figure 4 is a third structural schematic diagram of the crossbeam provided by the present invention;

[0040] Figure 5 is one of the structural schematic diagrams of the first bent edge provided by the present invention;

[0041] Figure 6 is a second schematic diagram of the structure of the first bent edge provided by the present invention;

[0042] Figure 7 is a third structural schematic diagram of the first bent edge provided by the present invention;

[0043] Figure 8 is one of the structural schematic diagrams of the reinforcing rib provided by the present invention;

[0044] Figure 9 is a second schematic diagram of the reinforcing rib provided by the present invention;

[0045] Figure 10 is a third schematic diagram of the reinforcing rib provided by the present invention;

[0046] Figure 11 is one of the structural schematic diagrams of the double-sided support part provided by the present invention;

[0047] Figure 12 is a second structural schematic diagram of the bilateral support section provided by the present invention;

[0048] Figure 13 is a third structural schematic diagram of the bilateral support section provided by the present invention;

[0049] Figure 14 is a schematic diagram of the structure of the plate provided by the present invention;

[0050] Figure 15 is one of the structural schematic diagrams of the shelving system provided by the present invention;

[0051] Figure 16 is a partial structural schematic diagram of the shelving system provided by the present invention;

[0052] Figure 17 is an assembly diagram of the crossbeam and column provided by the present invention;

[0053] Figure 18 is one of the cross-sectional views of the column provided by the present invention;

[0054] Figure 19 is a second sectional view of the column provided by the present invention;

[0055] Figure 20 is a structural schematic diagram of the column and reinforcing rib provided by the present invention;

[0056] Figure 21 is one of the structural schematic diagrams of the stepped reinforcement structure provided by the present invention;

[0057] Figure 22 is a second schematic diagram of the stepped reinforcement structure provided by the present invention;

[0058] Figure 23 is a third schematic diagram of the stepped reinforcement structure provided by the present invention;

[0059] Figure 24 is a fourth schematic diagram of the stepped reinforcement structure provided by the present invention;

[0060] Figure 25 is a schematic diagram of the structure of the shelving system provided by the present invention with an added enclosing plate;

[0061] In the diagram: 1. Column; 11. Assembly hole; 2. Crossbeam; 21. Enclosed cavity; 22. Rivet; 23. Relief notch; 24. Double-sided support; 241. Support edge; 242. Connecting edge; 25. Support compartment; 26. Connecting compartment; 27. Second curved surface; 3. Partition; 4. Baffle; 41. First bent edge; 5. Loop structure; 51. Inner layer; 52. Outer layer; 53. First curved surface; 6. Reinforcing rib; 7. Enclosed plate; 8. Stepped reinforcing structure. Detailed Implementation

[0062] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0063] In this invention, by improving the existing crossbeam, especially by bending it to form a closed cavity, the load-bearing capacity of the entire crossbeam is improved. At the same time, by adding reinforcing ribs, the stress is dispersed, reducing the problem of localized stress.

[0064] Referring to Figures 1-14, in this invention, the entire beam body is formed by directly bending the sheet material, making its processing simpler. Then, in order to increase the strength after bending, the closed part is fixedly connected by welding to form a relatively strong closed cavity. Then, multiple cavities are formed by bending at the closed cavity, and stress-dispersing ribs are added to achieve the dispersion of force when the entire closed cavity is subjected to stress, thereby improving the strength.

[0065] In this embodiment, the sheet material can be stainless steel or aluminum, etc. In actual processing, a longer sheet material can be directly bent, then welded and cut to form multiple beam bodies.

[0066] First, let's introduce the structure of beam 2.

[0067] In this embodiment, the crossbeam 2 includes a main body. The main body is partially bent to form a closed cavity 21. A support surface for supporting the partition 3 is then formed on the closed cavity. During use, the support surface on the closed cavity provides support for the core force. In the prior art, structures are basically single-layered, while the closed cavity forms a closed structure, and the connection of multiple lines increases the overall support strength.

[0068] First, the following is an introduction to how a closed cavity is formed:

[0069] In this embodiment, the crossbeam 2 can also be formed by directly bending a sheet metal. In this case, some bending edges will be generated during the bending process. For example, the first bending edge 41 at the crossbeam 2 is formed by bending the side of the baffle 4 away from the closed cavity towards the closed cavity. In this embodiment, the first bending edge 41 enables the baffle 4 to also have weld point bending during subsequent assembly, thus dispersing the vertical force.

[0070] When the first bent edge 41 and the closed cavity 21 are located on the same side of the baffle 4, the first bent edge 41 and the baffle 4 form a groove with the opening facing the closed cavity, or a double-layer structure in which the two are attached, such as an inverted U-shaped structure, or the two are attached together. When the first bent edge 41 and the baffle 4 are attached to form a double-layer structure, the two can be directly attached or fixed by welding. When attached, the length of the first bent edge 41 occupies a part of the baffle 4, and the entire first bent edge 41 can be extended inward, thereby connecting it with the closed cavity 21, thus forming a double-layer structure connected to the closed cavity.

[0071] The other end of the plate can also form a second bent edge, that is, the connection between the closed cavity 21 and the baffle 4 is bent to form a second bent edge that is welded to the baffle, or the closed edge located at the closure of the closed cavity is bent toward the inside of the closed cavity to form the second bent edge. The second bent edge is located inside the closed cavity or extends out of the closed cavity 21.

[0072] In this embodiment, for the crossbeam 2, the enclosed cavity 21 is a polygon with arc-shaped connections, and the connection between the enclosed cavity 21 and the baffle 4 forms a bent inverted U-shaped structure. In this embodiment, adjacent sides in the specific enclosed cavity 21 are connected by a second curved surface 27.

[0073] In this embodiment, the enclosed cavity 21 can be triangular or square, etc. The double-bending process added internally allows for multiple double-bending structures to be set at the ends of the baffle 4 and at the connection between the enclosed cavity 21 and the baffle. This adds support structures at the connection points and other stress areas, dispersing the transmission path of external forces and reducing local stress concentration. This increases the overall load-bearing capacity of the beam by 2 times, reaching an ultimate load of 150-21 kg. Simultaneously, it improves shear resistance, reducing bending and deformation of the beam under stress.

[0074] In this embodiment, two bends are added at the interface inside the crossbeam 2 to improve shear and compressive resistance through multi-layer support. The bend at the connection between the baffle and the enclosed cavity is to increase connectivity while dispersing vertical forces. The bend at the baffle increases the adhesion of the corresponding anchor point. The two bends together form a multi-level support structure, effectively dispersing external forces and avoiding structural failure caused by excessive stress at a single point.

[0075] Second, referring to Figures 11-15, the enclosed cavity and the baffle in this embodiment can also be connected, as detailed below:

[0076] In this embodiment, the crossbeam 2 is formed by bending the plate to create a closed cavity 21. Specifically, the closed cavity 21 can be divided into a support compartment 25 and a connecting compartment 26 that are interconnected. The two ends of the plate are bent at the connecting point to form the closed part of the closed cavity 21, and the closed part forms a double-sided support part 24. At this time, the double-sided support part 24 makes the strength of the closed part greater. The double-sided support part can be set close to the support surface of the support compartment 25, so that the overall support strength is increased and its practicality is improved.

[0077] In this embodiment, in order to disperse the horizontal force that may be generated at the closure point, an oblique reinforcing rib (not shown in the figure) is provided near the closure point. In use, the oblique reinforcing rib is placed near the closure point to assist in the decomposition of the force at the closure point.

[0078] In this embodiment, to distribute the stress on the entire crossbeam during use, reinforcing ribs 6 are provided on the side structures of the support compartment 25 and / or the connecting compartment 26 to disperse stress. In this embodiment, the reinforcing ribs 6 can be provided individually in the support compartment 25 or the connecting compartment 26, or simultaneously in both. Regardless of the arrangement, they will help disperse the force on the outside of the entire enclosed cavity 21. This disperses the localized stress within the enclosed cavity 21, and further disperses it through the stress-dispersing ribs, thereby reducing the localized stress.

[0079] In this embodiment, compared to a single enclosed cavity, it is not only divided into multiple cavities, each with different functions, giving it more effects; but also a double-layer support is provided at the closure of the enclosed cavity, giving the closure greater strength and assisting in supporting the support chamber.

[0080] In this embodiment, the added reinforcing ribs enable the overall structure to disperse stress in a timely manner when subjected to stress, thereby improving its overall strength.

[0081] In this embodiment, the oblique reinforcing rib can be an oblique surface or an arc-shaped structure, located between the connecting compartment 26 and the closing point, thereby forming a force-bearing surface from the connecting compartment to the closing point.

[0082] In this embodiment, the design of enclosed cavities and closures increases the load-bearing surface of the entire beam in both the horizontal and vertical directions. Simultaneously, diagonal reinforcing ribs are added to guide the propagation of lateral forces and improve support strength. In terms of appearance, a concealed welding process between the two layers replaces the traditional exposed welding method, resulting in a more aesthetically pleasing overall structure.

[0083] In this embodiment, the connecting compartment is used to connect the beam to other structures. For example, when forming a shelf or other storage rack, it is necessary to set up columns for height adjustment. In this case, the connecting compartment can be used to connect the beam to different heights of the columns to complete the assembly of single or multiple storage layers.

[0084] Specifically, in this embodiment, the connecting compartment 26 forms an inverted U-shaped structure. Compared with a single-sided structure, the inverted U-shaped structure creates a larger assembly space, which increases the connection space at the assembly point and makes the assembly more secure.

[0085] In this embodiment, the closed section is located on the side of the inverted U-shaped structure and is positioned near the support surface formed above the support compartment 25. At this point, the entire diagonal reinforcing rib is located above the support surface. In actual use, the force-bearing surface forms a guide trajectory extending from the side of the connecting compartment into the middle of the connecting compartment. This trajectory allows the forces generated during the assembly of the connecting compartment with columns, etc., to be promptly dispersed, preventing force accumulation. Preferably, the subsequent assembly position is higher than the diagonal reinforcing rib for better force dissipation.

[0086] In this embodiment, the force-bearing surface guides lateral forces from the inclined direction, enabling the lateral forces to be decomposed and guided, thus avoiding accumulation.

[0087] Specifically, in this embodiment, mounting holes (corresponding to those on the columns) can be provided on both sides of the inverted U-shaped structure. This creates a double-hole mounting area on the connecting compartment 26. For example, when assembling with the column using pins, the pins will pass through the mounting holes on both sides of the inverted U-shaped structure. This not only increases the length of the pin extending into the connecting compartment, making the connection more secure, but also increases the number of mounting points compared to single-hole assembly, ensuring stable assembly.

[0088] In this embodiment, the supporting cabin is introduced based on the inverted U-shaped connecting cabin.

[0089] Referring to the accompanying drawings, the cross-section of the support compartment 25 in this embodiment is a partially broken triangle, that is, after it extends, it can be connected with the inverted U-shaped connecting compartment to form a triangle. At this time, the two sides of the triangle are connected to the inverted U-shaped structure respectively. That is, in the triangle, the first side is away from the inverted U-shape, and the second and third sides located on both sides of the first side are connected to the two sides of the inverted U-shaped structure respectively.

[0090] To improve force dispersion, the connections between adjacent sides of the triangle and the inverted U-shaped structure are rounded. This rounded connection effectively decomposes force and avoids creating sharp edges, thus enhancing safety.

[0091] In this embodiment, the crossbeam is an overall hollow structure, with a through cavity formed inside. This through cavity is then divided into a connecting compartment and a support compartment along its cross-section. To improve support strength, the double-sided support portion 24 is preferably an L-shaped structure. In this case, the L-shaped structure forms a semi-enclosed cavity. The L-shaped structure can be configured in various ways, as detailed below:

[0092] The L-shaped structure in this embodiment includes a vertical support edge 241 and a horizontal connecting edge 242, wherein the support edge 241 and / or the connecting edge 242 are a double-layer structure.

[0093] In this embodiment, different configurations of the double-layer structure are described in detail below:

[0094] Referring to Figure 11, when both the support edge 241 and the connecting edge 242 are double-layered structures or the support edge is double-layered, the end of the connecting compartment 26 is located at the bottom of the end of the support compartment 25. At this time, the end of the connecting compartment forms a support to support the end of the support compartment.

[0095] Referring to Figure 12, when the connecting edge 242 has a double-layer structure, specifically, after the connecting compartment extends and bends downward, the supporting compartment extends and overlaps at the bend, so that the connecting edge 242 forms a double layer, and the overall support strength is increased.

[0096] Referring to Figure 13, when the support edge 241 is double-layered, the end of the plate constituting the support compartment 25 forms a semi-enclosed cavity, and the end of the plate constituting the connecting compartment 26 is located within the semi-enclosed cavity. This is equivalent to providing partial protection for the support edge 241.

[0097] Third, an introduction to reinforcing rib 6.

[0098] In this embodiment, the reinforcing rib 6 is at least one of a circular arc structure, a necked cavity structure, or a T-shaped structure to disperse the stress of the novel crossbeam. In this embodiment, the stress-dispersing rib is recessed within a closed cavity. Specifically, the various stress-dispersing ribs are described below:

[0099] For the triangular structure, the two sides at the opening of the expansion groove form a triangle connected by points. The side on the same side as the closed cavity is empty. At this time, the triangle faces the inside of the closed cavity and forms a constricted cavity, forming the vertices of the intersecting triangles inside the closed cavity.

[0100] For the T-type, the two sides at the opening of the expansion groove are connected by the edge located in the closed cavity, and the two sides form an angle or arc with the side edge.

[0101] For arc-shaped structures, the two ends of the closed edge are directly connected by the arc that faces the concave part of the closed cavity.

[0102] Referring to Figures 8-10 and the drawings of the column, in this embodiment, a reinforcing rib 6 is provided on the closed edge of the closed cavity 21 and / or on the column 1. The reinforcing rib 6 allows the external force on the beam 2 and / or the column to be diverted and dispersed, thereby dispersing it in multiple places.

[0103] In this embodiment, the reinforcing rib 6 is a raised or recessed structure, and is located on the inner or outer side of the column 1. In this embodiment, since the column 1 is mainly L-shaped or T-shaped in cross-section, in the double layer it forms, the inner L-shaped layer constitutes the inner side, and the outer L-shaped layer constitutes the outer side. For the T-shaped layer, it only has an outer side, i.e., the outer surface. Therefore, in the L-shaped layer, the reinforcing rib 6 can be set on the inner side, the outer side, or both the inner and outer sides simultaneously, while in the T-shaped layer, it can only be set on the outer side (i.e., the outer surface).

[0104] In this embodiment, the T-shaped structure includes both a horizontal and a vertical structure. The horizontal direction forms the load-bearing component, while the vertical direction provides overall support. Therefore, the reinforcing rib 6 is preferentially positioned in the horizontal direction. That is, when the cross-section of the double-layer structure is T-shaped, the reinforcing rib 6 is located on the outer surface of the horizontal side of the T-shaped structure to form a storage cavity.

[0105] In this embodiment, the reinforcing rib 6 is one or more. When there is one or more, they can all be protruding structures or all be recessed structures. In this case, a T-shaped structure can be formed along the horizontal direction to create a storage space with multiple storage cavities. Since the thickness direction of the entire T-shaped structure forms the length direction of the column body, the multiple storage cavities can form multiple rows of shelves.

[0106] In this embodiment, for the T-shaped structure, when several sides are bent to form a double-layer structure, the adjacent sides are connected by a curved surface, specifically a chamfered arc, thereby ensuring the distribution of force.

[0107] Furthermore, to improve the strength of the rivet, the end of the baffle 4 is bent to form a first bent edge 41, which forms the rivet assembly point. In this embodiment, the first bent edge 41 can be an inverted U-shaped structure or a reduced-diameter structure. The reduced-diameter section at the bottom of the necked structure allows it to effectively interfere with the rivet, while the increase in the bent edge increases the thickness or connecting surface at this point, thereby increasing the overall strength of the assembly.

[0108] In this embodiment, the crossbeam 2 adopts an irregular triangle design with an angle of 15°-70°. Through mechanical optimization, the center of gravity distribution is made more reasonable. The angle here is mainly the angle formed near the support. Therefore, this embodiment has the following effects:

[0109] 1) Reduce shear force concentration and enhance the structure's resistance to overturning.

[0110] 2) Improve the system's adaptability, making it suitable for home, warehouse, and industrial settings.

[0111] In this embodiment, reinforcing ribs 6 forming a dispersion path are provided at the closed cavity of the crossbeam 2 and / or at the outer loop of the column 1. In this embodiment, the reinforcing ribs 6 are structures that form a dispersion path, such as an enlarged cavity, a triangle, or an arc, thereby dispersing the stress at the center outward and improving the strength.

[0112] Secondly, the description of the shelving system formed by the beams is as follows:

[0113] Referring to Figures 15-24, the shelving system in this embodiment includes a column 1, a crossbeam 2 mounted on the column 1, and a partition 3 located on the crossbeam 2. The column 1 forms a cavity structure with the same opening at both ends. The cavity structure forms at least two layers of loop structure 5 along its cross-section in the direction of the crossbeam 2; that is, the cavity structure has a loop structure in its cross-sectional view.

[0114] The crossbeam 2 includes a closed cavity 21 for supporting the partition 3, and a baffle 4 that extends integrally along the height direction of the column 1 directly along the closed cavity 21. The column 1 is provided with a number of assembly parts along the height direction to facilitate assembly at different heights. At this time, an assembly end that cooperates with the assembly part is formed at the end of the closed cavity of the crossbeam 2 and / or at the baffle 4, thus realizing the assembly of the two.

[0115] In this embodiment, a loop structure is formed in the column 1, which can disperse the moment of inertia generated by the beam 2 and other loads or assemblies when the column 1 is subjected to them, so that the column has strong support strength.

[0116] In the entire shelving system, the closed cavity 21 in the beam 2 specifically adopts a fully enclosed design (i.e., the beam 2 itself forms a fully enclosed structure, and most of the entire fully enclosed structure is assembled onto the column 1). This significantly increases the area connecting the columns compared to single-sided or single-point contact, forming a closed mechanical circuit. The supporting column 1 is improved from an open cross-section to a fully enclosed closed cross-section, with multi-point support achieved through double-layer bending. A second layer of bent support plate is added inside the column, optimizing the force path and increasing the contact area through double-layer connection.

[0117] In this embodiment, the load-bearing partition 3 can be made of steel, glass, marble, wood, solid wood composite board, or imitation wood marble board, etc., to meet the needs of different customers and achieve different functions.

[0118] The assembly of the columns and beams is described below:

[0119] First, to increase the contact area between the column 1 and the beam 2, the loop structure 5 forms a semi-enclosed structure, with several of the assembly parts located on the inner wall of the semi-enclosed structure. Because it is positioned within the semi-enclosed structure, the beam 2 makes partial contact with at least two surfaces within the semi-enclosed structure, thus increasing the contact area. Specifically, at this time, the column 1, viewed from the side or top view, has an L-shaped structure, which can shield and protect the connection between the internal column 1 and the beam 2 from both sides.

[0120] In practical use, when there are multiple crossbeams 2, at least two of the assembly parts are provided in the horizontal direction of the loop structure 5 within the semi-enclosed structure.

[0121] Second, in the assembly part or assembly end, one is provided with an assembly hole 11, and the other is provided with a rivet 22. The assembly hole 11 or the rivet 22 extends into the cavity structure of the two-layer loop structure to complete the riveting. In this embodiment, the assembly hole 11 can be on the column or the beam. Similarly, the rivet 22 is also present. Unlike the prior art, where the columns are mostly single-layer structures and the rivets are exposed, in this embodiment, the rivet 22 can extend into the assembly hole 11. In this case, it only extends into one layer and does not protrude from the outer layer, making the structure more aesthetically pleasing.

[0122] In this embodiment, to make full use of the space and facilitate insertion and access at the assembly point, clearance notches 23 are formed at both ends of the enclosed cavity 21, and an inclined surface is formed on the outer side of the clearance notches 23 near the column 1. The inclined surface facilitates insertion.

[0123] On the other hand, an introduction to column 1 and the circuit structure.

[0124] In this embodiment, the column 1 is integrally bent and welded together with the circuit structure 5. The weld joint forms at least two layers after bending, creating at least two paths for dispersing force transmission. In this embodiment, the double-layer welding essentially adds a 1mm-5mm extension connection area at one end, significantly improving connection stability and bending stiffness. This design improves shear resistance by over 30% and reduces local deformation by 50%; simultaneously, fatigue life is extended by up to twice under cyclic loading conditions.

[0125] For the column, in this embodiment, the specific double-layer structure includes an inner layer 51 and an outer layer 52, which are integrally bent and welded together. The inner layer 51 and the outer layer 52 are connected by a first curved surface 53. The purpose of connecting them by the first curved surface 53 is also to increase the load-bearing strength.

[0126] In this embodiment, for column 1, a closed loop is formed by bending the sheet metal. A bend can be made at the closure point, with one end of the sheet metal bent, or both ends bent simultaneously, increasing the strength within the closed loop. When both ends are bent, the bend can be simultaneous inward and in the same direction, in the opposite direction, or perpendicularly, resulting in various closed loop structures. In this embodiment, when the column is bent, the bending length at the bent end accounts for 1%-20% of the total length of the bent component.

[0127] In this embodiment, the inner layer 51 and the outer layer 52 have similar structures. The inner layer 51 and the outer layer 52 include at least a first column and a second column, and the first column and the second column are connected by a second curved surface. In this embodiment, an L-shaped structure can be formed by the two columns.

[0128] Referring to Figures 21-24, the system also includes a stepped reinforcing structure 8, located in the inner layer and / or at the intersection of two directions in a closed loop. Alternatively, the stepped reinforcing structure can be formed by bending the end of a bent component, or by overlapping the end of the bent component onto the overlapping surface formed by the stepped reinforcing structure 8. That is, in this embodiment, the stepped reinforcing structure 8 can be formed by bending one of the bent edges of the bent component, or the end of the bent component can be directly overlapped onto the overlapping surface formed by the stepped reinforcing structure 8. When the stepped reinforcing structure has multiple steps, it overlaps on the bottommost step.

[0129] Of course, the entire bent component can be used to form the column. In this case, one end of the bent component is not bent, and the other end is bent to form a stepped reinforcing structure 8. Then, the unbent end is overlapped on the stepped reinforcing structure 8 and then double-welded. Alternatively, in an L-shaped column, one end of the bent component is bent to form an L-shaped bent component, and the other end is bent to form a stepped structure. In this case, the stepped structure is overlapped on a bent component and then double-welded.

[0130] In this embodiment, for the convenience of production, the column 1 can be formed by bending a bending member. The end of the bending member is bent to form the stepped reinforcing structure, or the end of the bending member overlaps the overlapping surface formed by the stepped reinforcing structure; or the stepped reinforcing structure overlaps the bend at the end of the bending member.

[0131] In this embodiment, after bending, the cross-section of column 1 can be L-shaped or T-shaped.

[0132] Referring to the attached drawings, the cross-section of column 1 is T-shaped, and each column 1 can be installed on both sides; referring to attached drawings 2 and 6, the cross-section of column 1 is L-shaped, and only one side can be assembled.

[0133] In this embodiment, the column 1 can also be a hollow T-shaped structure. In this case, the T-shape is formed by bending a metal structure once to form a closed loop of the T-shape. This closed loop is also double-layered, and each side of the T-shape is composed of two layers. It is formed by bending in one piece, which is simple to produce.

[0134] In this embodiment, regarding the description of forming column 1 by bending, the bending of the bent part has multiple methods, which are detailed below:

[0135] 1) After bending one end of the bent part to form a double-layered L-shaped structure, the second end is bent to form the first bent edge. At this time, the second end of the bent part is set horizontally, and the first bent edge can be bent into a small L-shape again and then placed horizontally on the second end.

[0136] 2) The first bent edge after bending forms a small L-shape, but the second end is located in the open groove formed by the L, so that the second end can bear the load.

[0137] 3) If the second end is set vertically, the first bent edge will be bent again to form a small L-shape, and its vertical end will be welded to the second end.

[0138] 4) Both the first and second ends are bent to form the first and second bent edges. The two bent edges are parallel in both directions, that is, parallel in both the vertical and horizontal directions and fit together, and then they are welded.

[0139] In this embodiment, by using various bending methods, a single bent component is integrally formed and then welded to achieve a fully enclosed column structure.

[0140] In this embodiment, the cross-section of the double-layer structure can also be a T-shaped structure. In this case, each side of the T-shape includes an inner layer and an outer layer. Specifically, the horizontal plane of the T-shape directly forms the inner and outer sides, but in the support direction located in the middle of the horizontal plane, it has two sides. In this case, either side constitutes the inner layer, and the other constitutes the outer layer. Of course, the above-mentioned bending method can also appear in the T-shape. For example, in the structure shown in Figure 11, spot welding can be performed at a certain inner or outer layer of the T-shape to form a double-layer T-shape.

[0141] Finally, regarding the assembly of multi-layer shelves and their application.

[0142] In this embodiment, several column assemblies are also included, with two assembly parts forming at each column assembly in opposite directions. The column assemblies in this embodiment can be configured in two ways: one is by splicing two L-shaped sections, and the other is by a T-shaped structure, thus directly forming two opposite assembly parts.

[0143] In this embodiment, when the cross-section of the column 1 is L-shaped, it includes a vertical first direction and a horizontal second direction perpendicular to the first direction. When splicing, they are in the same direction, such as being vertically contacted and fixed or horizontally contacted and fixed at the same time. Then, the opening directions of the two L-shapes are opposite, thus forming an assembly part with two assembly directions opposite to each other, such as one facing left and one facing right.

[0144] In this embodiment, when the cross-section of the column 1 is T-shaped, two assembly parts are formed on both sides, thereby completing two reverse assembly methods.

[0145] In this embodiment, the column assembly allows the entire shelving system to be assembled in an adjustable length configuration. Furthermore, by selecting column assemblies of different heights, a shelving system with multiple rows of shelves can be formed, thus diversifying the subsequent assembly methods.

[0146] Referring to Figure 25, the application of the beams in this embodiment is also included, for example, using the beam-based shelving unit in a bookcase. In this embodiment, the beams, combined with the uprights, can be modified through simple structural improvements to form different types of shelving products, such as a bookcase. In this case, the uprights and beams form a storage space, and the storage space is surrounded by a closed panel, making the storage space a bookcase with an opening at the top. In this embodiment, since the four uprights form the storage space and then the beams are erected, but the uprights are open to each other, a closed panel can be added to reduce the number of openings to only one. Alternatively, anti-leakage strips or other components can be added to the beams.

[0147] The shelving system in this embodiment has the following advantages:

[0148] This invention has significant advantages in the following three aspects:

[0149] 1. Increased load-bearing capacity:

[0150] The selected fully enclosed L-shaped uprights 1 and fully enclosed triangular reinforced crossbeams 2 enclose the cross-section, improving bending stiffness and shear strength. The combination of the crossbeam and upright design allows the load-bearing limit of a single shelf to reach over 21kg (a 100% increase).

[0151] 2. Enhanced stability:

[0152] The welding and bending processes optimized the force path and force flow distribution of the columns, reducing swaying and structural loosening at the beam connections. The fully enclosed and multi-point supported structure reduced structural swaying, increasing bending stiffness and shear strength by 30%-50%.

[0153] 3. Extended service life:

[0154] The bending design significantly enhances fatigue life, reducing the probability of failure by 80% under repeated cyclic loading.

[0155] The fully enclosed design of the beams and columns in this embodiment can be achieved by riveting or other methods, but welding after integral bending is more efficient and stable.

[0156] The fully enclosed triangular reinforced beam design in this embodiment, especially the bending and welding processes and the closed section, improves the load-bearing capacity and optimizes the stress distribution.

[0157] For fully enclosed L-shaped columns, it improves the overall structural rigidity and stability, and significantly enhances fatigue life and shear resistance.

[0158] In this embodiment, the combination of crossbeams and columns is used to rationally allocate force flow paths, enhance anti-overturning ability, and adapt to various scenario requirements.

[0159] The mechanical experiments and analyses conducted on the shelving system presented in this embodiment yielded the following conclusions:

[0160] 1. Bending stiffness test: The improved beam and column combination design increases the bending stiffness by 40% and reduces lateral deformation by 50%.

[0161] 2. Shear performance test: The shear resistance of the beam and column combination is increased by 30%, significantly reducing the risk of local failure.

[0162] 3. Fatigue test: After cyclic loading, both the beam and the column maintained excellent performance and no obvious fatigue damage occurred.

[0163] 4. Load-bearing test: In the overall structure test, the shelving unit has a load-bearing capacity of over 21kg, which is superior to mainstream products on the market.

[0164] In this embodiment, when only one shelving area is needed, an assembly area can be formed by four uprights, and then one or more layers of crossbeams can be assembled in the assembly area. When multiple shelving areas are needed, two L-shaped uprights can be added or T-shaped uprights can be selected.

[0165] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0166] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0167] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crossbeam, characterized in that, It includes a main beam, which is partially bent to form a closed cavity, and a support surface for supporting a partition is formed on the closed cavity; The cross-section of the enclosed cavity is polygonal.

2. The crossbeam according to claim 1, characterized in that, The main body of the beam also includes a baffle that is connected to the closed cavity and extends outward through the closed edge of the closed cavity. The side of the baffle away from the closed cavity is bent toward the closed cavity to form a first bent edge.

3. The crossbeam according to claim 2, characterized in that, The first bent edge and the closed cavity are located on the same side of the baffle, and the first bent edge and the baffle form a groove with the opening facing the closed cavity or a double-layer structure in which the two are attached.

4. The crossbeam according to claim 3, characterized in that, The first bent edge and the closed cavity are located on the same side of the baffle, and the first bent edge is welded to the baffle to form a double-layer structure.

5. The crossbeam according to claim 3, characterized in that, The connection between the enclosed cavity and the baffle is bent to form a second bent edge that is welded to the baffle, or the enclosed edge located at the closure of the enclosed cavity is bent toward the inside of the enclosed cavity to form the second bent edge, and the second bent edge is located inside the enclosed cavity or extends out of the enclosed cavity.

6. The crossbeam according to claim 1, characterized in that, The main body of the crossbeam is formed by bending the plate to form the closed cavity. The closed cavity forms a support compartment and a connecting compartment that are connected to each other. The two ends of the plate are bent at the connection point to form the closure of the closed cavity. The closure point forms a double-sided support part, and an oblique reinforcing rib is provided near the closure point.

7. The crossbeam according to claim 6, characterized in that, The oblique reinforcing rib is located between the connecting compartment and the closure, and the oblique reinforcing rib forms a force-bearing surface.

8. The novel crossbeam according to claim 7, characterized in that, The connecting compartment forms an inverted U-shaped structure, and the closure is located on the side of the inverted U-shaped structure and is positioned close to the support surface on the support compartment.

9. The crossbeam according to claim 6, characterized in that, The bilateral support section has an L-shaped structure, which includes a support side and a connecting side, and the support side and / or the connecting side has a double-layer structure.

10. The crossbeam according to claim 9, characterized in that, In the L-shaped structure, when both the supporting side and the connecting side are double-layered or the connecting side is double-layered, the end of the connecting compartment is located at the bottom of the end of the supporting compartment. When the connecting edge is double-layered, the end of the plate constituting the support compartment forms a semi-enclosed cavity, and the end of the plate constituting the connecting compartment is located inside the semi-enclosed cavity.

11. The crossbeam according to claim 1, characterized in that, The closed edge of the closed cavity is formed with reinforcing ribs that are recessed or protruding towards the inside of the closed cavity. The supporting surface is subjected to stress from the partition and / or the items on the partition, forming a stress area. The reinforcing ribs cause the stress to change from a point concentration tendency to a line concentration or surface concentration tendency.

12. The crossbeam according to claim 11, characterized in that, The reinforcing rib is an enlarged diameter groove with a gradually widening opening, and the opening of the enlarged diameter groove is connected to the closed edge.

13. The crossbeam according to claim 1, characterized in that, The enclosed cavity includes at least three enclosed sides, and adjacent enclosed sides are connected by a first stress dispersion surface.

14. A shelving system, characterized in that, The invention includes a crossbeam as described in any one of claims 1-13, and a column for assembling the crossbeam, the column forming a cavity structure, the cavity structure forming a loop structure of at least two layers along its cross-section in the assembly direction with the crossbeam.

15. The shelving system according to claim 14, characterized in that, The circuit structure forms a semi-enclosed structure, and several of the assembly parts are located on the inner wall of the semi-enclosed structure.

16. The shelving system according to claim 15, characterized in that, The assembly parts are provided in at least two directions within the semi-enclosed structure.

17. The shelving system according to claim 14, characterized in that, The circuit structure is a closed loop, which is formed by integral bending and welding. The welding point forms at least a double-layer weld or a single-layer spot weld after bending. The double-layer weld creates at least two paths for dispersing force transmission at the welding point.

18. The shelving system according to claim 14, characterized in that, The double-layer structure includes an inner layer and an outer layer that are integrally bent and welded together, and the inner and outer layers are connected by a first curved surface.

19. The shelving system according to claim 18, characterized in that, It also includes a stepped reinforcement structure, which is located in the inner layer and / or at the intersection of two directions in a closed loop.

20. The shelving system according to claim 19, characterized in that, The column is formed by bending a bending member, the end of which is bent to form the stepped reinforcing structure, or the end of the bending member overlaps the overlapping surface formed by the stepped reinforcing structure; or the stepped reinforcing structure overlaps the bend at the end of the bending member.

21. The application of the beam according to any one of claims 1-14, wherein the application is specifically the application of the beam in a bookcase.

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