Stand column forming frame body

Abstract

The utility model provides a stand column forming a frame body, which comprises a stand column body forming support and used for being connected with the horizontal direction, the cross section of the stand column body along the horizontal direction is a closed loop, and the closed loop at least forms a double-layer structure. In the assembling and / or bearing process of the stand column body, the stand column body bears assembling force and / or bearing force, and the closed loop at the cross section enables the inertia moment on the double-layer structure to be evenly dispersed. According to the stand column, through the double-layer structure of the cross section, the bearing capacity and the like borne by the stand column can be dispersed in time, and the strength of the stand column is improved.

Description

Technical Field

[0001] This utility model relates to the field of column technology for assembling various shelves such as shelving units, and particularly to the columns that constitute the shelves. Background Technology

[0002] Existing shelving / shelf uprights typically employ a semi-closed cross-section design (such as...) Figure 1 As shown in the image, or a single-layer L-shaped column structure, specifically constructed from two plates bent (not closed). However, this design exhibits the following drawbacks during long-term use:

[0003] 1) Open cross-sections result in poor structural stability, and areas with concentrated stress are prone to deformation or cracking.

[0004] 2) The open design limits the load-bearing capacity of the column (warping phenomenon), which is more obvious under high load conditions.

[0005] The semi-closed structure in the prior art has the following drawbacks:

[0006] 1) Small contact area: The lack of internal connection in the column results in insufficient effective bearing area, which can easily lead to deformation or instability.

[0007] 2) Insufficient compressive and shear strength: The semi-enclosed design has a single force path, and the shear force cannot be effectively transmitted, which makes the local stress points prone to failure.

[0008] 3) Short structural fatigue life: Unconnected or weak connection parts will develop fatigue cracks under cyclic loading, reducing the service life of the column. Utility Model Content

[0009] The purpose of this utility model is to provide a column that constitutes a frame. Through a double-layer cross-section structure, combined with bending and welding, the load-bearing force received by the column can be distributed in a timely manner, thereby improving its strength.

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0011] The uprights that make up the frame include,

[0012] A column body that forms a support and is used for connection with the horizontal direction, wherein the cross-section of the column body in the horizontal direction is a closed loop, and the closed loop forms at least a double-layer structure;

[0013] During the assembly and / or load-bearing of the column body, the column body is subjected to assembly force and / or load-bearing force, and the closed loop at the cross-section allows the moment of inertia of the double-layer structure to be evenly distributed.

[0014] Furthermore, the closed loop is formed by integral bending and welding, and 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.

[0015] 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.

[0016] Furthermore, the inner and outer layers have similar structures, and the inner and outer layers include at least a first column and a second column, with the first column and the second column connected by a second curved surface.

[0017] Furthermore, both the inner and outer layers are L-shaped structures, and the double-layer structure is a double-layer L-shaped structure that forms a closed loop.

[0018] Furthermore, the column body is formed by bending a bending member, and at least one end of the bending member is bent and fixed to the other end by double-layer welding or single-layer spot welding.

[0019] Furthermore, the column body has at least two directional assembly parts, and the weld of the bent part is located at the connection of the two assembly parts.

[0020] Furthermore, the first end and / or the second end of the bent component are bent such that the first end and the second end are contacted and welded in a manner that involves top mounting, bottom bearing, unidirectional parallel fit, or bidirectional parallel fit.

[0021] 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.

[0022] Furthermore, the end of the bent component is bent to form the stepped reinforcing structure, or the end of the bent component overlaps the overlapping surface formed by the stepped reinforcing structure; or the stepped reinforcing structure overlaps the bend at the end of the bent component.

[0023] Furthermore, the cross-section of the double-layer structure is T-shaped, and in the T-shaped support direction, the two sides respectively constitute the inner layer and the outer layer.

[0024] Furthermore, it also includes stress-dispersing ribs located on the outer side of the double-layer structure, which allow external forces on the column body to be diverted and dispersed.

[0025] Furthermore, the stress-dispersing ribs form a diversion path that disperses from inside or outside the double-layer structure toward both sides of the double-layer structure.

[0026] Furthermore, the stress-dispersing rib is a raised or recessed structure, and the stress-dispersing rib is located on the inner or outer side of the column body.

[0027] Furthermore, when the cross-section of the double-layer structure is T-shaped, the stress-dispersing ribs are located on the outer surface of the horizontal side of the T-shaped structure to form a storage cavity.

[0028] Furthermore, the stress-dispersing ribs are one or more, forming a T-shaped structure with a horizontal storage space.

[0029] The beneficial effects of this utility model are as follows:

[0030] In this invention, the double-layered cross-section structure, combined with bending and welding, allows the load-bearing capacity of the column to be distributed in a timely manner, thereby improving its strength. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the supporting column in the prior art;

[0032] Figure 2 A cross-sectional view of the uprights constituting the frame provided by this utility model;

[0033] Figure 3 One of the structural schematic diagrams of the bending point in the column constituting the frame provided by this utility model;

[0034] Figure 4 A second structural schematic diagram of the bending point in the column constituting the frame provided by this utility model;

[0035] Figure 5 The third structural schematic diagram of the bending point in the column constituting the frame provided by this utility model;

[0036] Figure 6 Fourth structural schematic diagram of the bending point in the column constituting the frame provided by this utility model;

[0037] Figure 7 Fifth structural schematic diagram of the bending point in the column constituting the frame provided by this utility model;

[0038] Figure 8 This is a structural schematic diagram of the L-shaped column provided by this utility model;

[0039] Figure 9 A schematic diagram of a stress-dispersing rib provided by this utility model;

[0040] Figure 10 Another structural schematic diagram of the stress-dispersing rib provided by this utility model;

[0041] Figure 11This is a structural diagram of the T-shaped column provided by this utility model;

[0042] Figure 12 One of the cross-sectional views of the T-shaped column provided by this utility model;

[0043] Figure 13 Second sectional view of the T-shaped column provided by this utility model;

[0044] Figure 14 Third sectional view of the T-shaped column provided by this utility model;

[0045] Figure 15 Fourth sectional view of the T-shaped column provided by this utility model;

[0046] Figure 16 A schematic diagram of the structure of the first bent edge and the second bent edge provided by this utility model;

[0047] Figure 17 One of the stepped reinforcement structures provided by this utility model for L-shaped columns;

[0048] Figure 18 One of the stepped reinforcement structures provided by this utility model for L-shaped columns;

[0049] Figure 19 One of the stepped reinforcement structures provided by this utility model for L-shaped columns;

[0050] Figure 20 One of the stepped reinforcement structures provided by this utility model for T-shaped columns;

[0051] In the picture:

[0052] 1. Column body; 2. Closed loop; 3. Double-layer structure; 31. Inner layer; 32. Outer layer; 33. First curved surface; 4. First column; 5. Second column; 6. Second curved surface; 7. Bending component; 71. First bent edge; 72. Second bent edge; 8. Stress-dispersing rib; 9. Third curved surface; 10. Stepped reinforcement structure. Detailed Implementation

[0053] 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 transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0054] See attached document Figure 2-16As shown, in this embodiment, the columns constituting the frame include a column body 1 that forms a support and is used for horizontal connection. The cross-section of the column body 1 along the horizontal direction is a closed loop 2, and the closed loop 2 forms at least a double-layer structure 3. In the prior art, the column body is mostly a single-layer structure, and some even have breaks at the connection points. The overall structural strength at the connection points is weak, and fatigue cracks are easily generated after repeated loading, affecting its use. In this embodiment, not only is a fully enclosed closed loop formed, avoiding breaks, but at least two layers are also formed, thereby improving the overall strength, compressive strength, and shear strength.

[0055] In this embodiment, the column body is subjected to three situations during assembly, cargo loading, and assembly and cargo loading: assembly force, load-bearing force, and assembly force and load-bearing force. The closed and double-layer structure in this embodiment can make the moment of inertia on the double-layer structure evenly distributed at the transverse cross-section of the column body, especially the closed loop, thereby reducing the uneven distribution of the secondary moment of inertia of the cross-section.

[0056] To further decompose and distribute the force, the closed loop is formed by integral bending and welding, with the welded joint forming at least a double-layer weld after bending. This double-layer weld creates at least two paths for dispersing force transmission. In this embodiment, this welding method is used to optimize the force path.

[0057] In this embodiment, the double-layer structure 3 includes an inner layer 31 and an outer layer 32 integrally bent and welded together, and the inner layer 31 and the outer layer 32 are connected by a first curved surface 33. Compared with sharp angles or right angles, curved surfaces are safer and can better divert and disperse the force as expected.

[0058] In this embodiment, the inner layer 31 and the outer layer 32 have similar structures. The inner layer 31 and the outer layer 32 include at least a first pillar 4 and a second pillar 5, and the first pillar 4 and the second pillar 5 are connected by a second curved surface 6. In this embodiment, the first pillar 4 and the second pillar 5 form at least an included angle, or there can be multiple pillars forming a polygonal structure.

[0059] Preferably, the first column 4 and the second column 5 are set at right angles, and the inner layer 31 and the outer layer 32 are both L-shaped structures. The double-layer structure is a double-layer L-shaped structure that forms a closed loop. At this time, the connection of the L-shape is not a right angle, but a curved surface, so as to improve the overall force distribution effect.

[0060] Furthermore, the column body 1 is formed by bending a bending member 7, and at least one end of the bending member 7 is bent and welded to the other end.

[0061] Furthermore, the bending length at the bent end accounts for 1%-20% of the total length of the bent part 7.

[0062] In this embodiment, the double-layer structure is described using an L-shape as an example. The column body 1 has at least two directional assembly parts, and the weld of the bent component is located at the connection point of the two assembly parts. Specifically, the weld of the bent component 7 is located at the connection point of the L-shape.

[0063] In this embodiment, there are multiple ways to bend the bent part 7, which are described in detail below:

[0064] 1) After one end of the bending component 7 is bent to form a double-layered L structure, the second end is bent to form the first bending edge 71. At this time, the second end of the bending component 7 is set horizontally, so the first bending component 71 can be bent into a small L shape again and then placed horizontally on the second end.

[0065] 2) The first bending member 7 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.

[0066] 3) If the second end is set vertically, the first bent part 71 will be bent again to form a small L-shape, and its vertical end will be welded to the second end.

[0067] 4) Both the first and second ends are bent to form the first bent part 71 and the second bent part 72. The two boxes are bidirectionally parallel, that is, parallel in both the vertical and horizontal directions and fit together, and then they are welded.

[0068] 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.

[0069] 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... Figure 11 The structure shown can be spot-welded at one of the inner or outer layers of the T-shape to form a double-layered T-shape.

[0070] See attached document Figure 9-10 As shown, in this embodiment, a force-dispersing rib 8 is also included on the outside of the double-layer structure 3, which allows the external force on the column body 1 to be diverted and dispersed.

[0071] Specifically, the stress-dispersing ribs 8 form a diversion path that disperses from the inside or outside of the double-layer structure toward both sides of the double-layer structure. In this embodiment, the stress-dispersing ribs 8 can be disposed on one or both sides of the outer layer 32.

[0072] This embodiment proposes a fully enclosed, multi-welded column structure by upgrading and optimizing the traditional column design. This significantly improves the shortcomings of traditional structures in terms of load-bearing capacity, stability, and fatigue life. The main technical points include:

[0073] 1) Fully enclosed column structure:

[0074] In this embodiment, the cross-section is optimized from a traditional open structure to a fully enclosed L-shaped closed design, achieved through integral molding and welding processes. The fully enclosed design forms a closed mechanical loop, effectively avoiding stress concentration caused by the open section.

[0075] The fully closed section significantly improves bending stiffness (by reducing the uneven distribution of the second moment of inertia of the section through a closed loop). Under load, the lateral stiffness increases, preventing warping or lateral instability.

[0076] Welding after single-piece molding:

[0077] To ensure a fully enclosed structure, a bent component (7) is used for welding to achieve this. By adding welded connections inside the columns, the stress path is optimized. Welding methods include two types: pull welding (single-layer spot welding) and bending welding (double-layer welding), each applicable to different customer scenarios. Pull welding points can be selected at different locations, without requiring a strict bending process. Bending welding refers to welding the bent portion of the material to the main plate; the length of the bent portion is generally between 1% and 20% of the total plate length. This increases the contact area (e.g., ...). Figure 3 (As shown). This process structure ensures multi-path force flow transmission in the overall structure, improving overall stability and shear resistance, and avoiding the risk of damage caused by local stress concentration in traditional designs. This design optimizes the shear force transmission path, resulting in a more uniform stress distribution and reducing local stress by more than 30%. It improves the overall stiffness of the column connection points and enhances resistance to localized damage. After multiple cyclic loading, the deformation of the connection area is reduced by 50%, significantly extending its service life. The aforementioned welding points can be performed at any location.

[0078] In this embodiment, there are multiple ways to bend and weld the ends of the bent parts. Regardless of the method mentioned above, in the actual application of shelving / shelf uprights, they all belong to the method of achieving a "fully enclosed upright structure" by "welding after integral molding of single plates".

[0079] To increase the uniformity of vertical stress, in this embodiment, the uprights of the heavy-duty shelving / rack are reinforced with ribs (i.e., stress-dispersing ribs 8). The purpose is to improve the overall stability of the uprights. T-shaped ribs can be added to the inner or outer side of the uprights in the "fully enclosed upright structure." These ribs alter the force flow path of the uprights, making the stress on the overall structure more uniform. The ribs disperse the stress concentration in the stress area from a single point to a larger area, significantly reducing the stress peak.

[0080] In this embodiment, the fully enclosed design closes the cross-section, improving bending stiffness and shear strength.

[0081] Performance tests were conducted on the column body in this embodiment. The tests showed that, compared with traditional open structures, the load-bearing limit of this design was increased by an average of nearly 50%. In this embodiment, the connection optimized the force path and force flow distribution of the column, reducing swaying and structural loosening at the beam connection. In simulated lateral loading tests, the improved design reduced the maximum displacement by more than 35%. In this embodiment, fatigue performance was significantly enhanced through extended contact and double-layer connection design.

[0082] The full-wrap design of the column body in this embodiment can be achieved through riveting, multi-layer plate welding, etc., but the performance of the welding process is better after the single-plate welding is integrally formed.

[0083] In this embodiment, the length of the bent portion can generally be adjusted within 1%-50% of the total length of the sheet metal according to specific application requirements, but the optimal design value is 1%-20%.

[0084] The fully enclosed cross-section design enhances the bending stiffness of the cross section, optimizes stress distribution, and reduces the risk of local failure.

[0085] The extended contact connection design improves end connection performance, disperses stress concentration, and extends service life. After 2000 cycles of cyclic loading, the probability of failure of the improved structure is reduced by 80%.

[0086] See attached document Figure 11-15 As shown, in this embodiment, the column body 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.

[0087] In this embodiment, the stress-dispersing rib 8 is a raised or recessed structure, and the stress-dispersing rib 8 is located on the inner or outer side of the column body 1. In this embodiment, since the column body 1 is mainly L-shaped or T-shaped in cross-section, in the double layer, 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 stress-dispersing rib 8 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).

[0088] In this embodiment, when the structure is T-shaped, it includes a horizontal structure and a vertical structure. The horizontal direction forms the load-bearing structure, and the vertical direction forms the overall support. Therefore, the stress-dispersing rib 8 is preferentially positioned in the horizontal direction. That is, when the cross-section of the double-layer structure is T-shaped, the stress-dispersing rib 8 is located on the outer surface of the horizontal side of the T-shaped structure to form a storage cavity.

[0089] For the stress-dispersing rib 8, when it is a raised structure, the two sides of the raised part are preferentially used to form storage cavities, and the raised structure protects it. For the recessed structure, the recessed part is preferentially used as the storage cavity.

[0090] In this embodiment, the shape of the stress-dispersing ribs is divided into two types: T-shaped, arc-shaped, and triangular. The position of the reinforcing ribs can be bent according to actual needs. The detailed structure is as follows:

[0091] For the triangular structure, the two sides at the opening of the expansion groove form a triangle connected by points. The outer side 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.

[0092] In this embodiment, the stress-dispersing ribs 8 are one or more. When there are 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 of the 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.

[0093] 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 third curved surface 9, specifically a chamfered arc, thereby ensuring the distribution of force.

[0094] See attached document Figure 17-20 As shown, this embodiment also includes a stepped reinforcing structure 10. Specifically, the stepped reinforcing structure 10 is located in the inner layer and / or at the intersection of two directions in a closed loop. For example, it can be directly disposed in the inner layer or at the intersection of the two sides.

[0095] Of course, the stepped reinforcing structure can also be formed by bending the end of the bending member 7, or by overlapping the end of the bending member 7 onto the overlapping surface formed by the stepped reinforcing structure 10. That is, in this embodiment, the first bending edge 71 of the bending member 7 can be bent to form the stepped reinforcing structure 10, or the end of the bending member 7 can be directly overlapped onto the overlapping surface formed by the stepped reinforcing structure 10. When the stepped reinforcing structure has multiple steps, it overlaps on the bottommost step.

[0096] See attached document Figure 17 As shown, in the L-shaped column, one end of the bent part 7 does not need to be bent, and the other end is bent to form a stepped reinforcing structure 10. Then the unbent end is overlapped on the stepped reinforcing structure 10 and then double-welded.

[0097] See attached document Figure 18 As shown, in the L-shaped column, one end of the bending member 7 is bent to form the first bending member of the L-shape, and the other end is bent to form a stepped reinforcing structure. The stepped reinforcing structure is then attached to the first bending member and then welded in two layers.

[0098] See attached document Figure 19 As shown, at this time, the bent part 7 is bent in one piece to form the stepped reinforcing structure 10, and then the two ends of the bent part 7 are directly welded in a single layer.

[0099] See attached document Figure 20 As shown, at this point, the T-shaped column is bent directly on both sides in the support direction to form the stepped reinforcement structure.

[0100] The aforementioned stepped reinforcement structure greatly increases the overall strength of the column.

[0101] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0102] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0103] 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 column forming a frame, characterized in that, The utility model relates to a kind of column body, including, Forming support, and for connecting with horizontal direction, the cross section of column body along horizontal direction is closed loop, and the closed loop at least forms double-layer structure; Column body is assembled and / or carries, and column body is subjected to assembly force and / or carrying force, and the closed loop at the cross section makes that inertia moment on double-layer structure is evenly dispersed.

2. The column of claim 1, wherein The closed loop is welded after being bent integrally, and the welding at least forms double-layer welding or single-layer spot welding after being bent, and the double-layer welding makes that welding forms at least two dispersed force transmission paths.

3. The column of claim 1, wherein The double-layer structure includes inner layer and outer layer welded after being bent integrally, and the inner layer and outer layer are connected by first curved surface.

4. The column of claim 3, wherein The inner layer and outer layer are similar structure, and the inner layer and outer layer at least include first column and second column, and the first column and second column are connected by second curved surface.

5. The column of claim 4, wherein The inner layer and outer layer are L-shaped structure, and the double-layer structure is double-layer L-shaped structure forming closed loop.

6. The column of claim 3, wherein The column body is bent by bending piece, and at least one end of two ends of the bending piece is fixed with the other end by double-layer welding or single-layer spot welding after being bent.

7. A column forming a frame according to claim 6, wherein At least two assembly parts in two directions are formed on the column body, and the welding of bending piece is located at the junction of two assembly parts.

8. The column of claim 7, wherein The first end and / or second end of the bending piece is bent, so that the first end and the second end are contacted and welded in the manner of upper erection, bottom bearing, single-direction parallel lamination or double-direction parallel lamination.

9. The column of claim 6, wherein It also includes stepped reinforcing structure, which is located in the inner layer and / or the intersection of the closed loop in two directions.

10. The column of claim 9, wherein The end of the bending piece is bent to form the stepped reinforcing structure, or the end of the bending piece is lapped on the lapping surface formed by the stepped reinforcing structure, or the stepped reinforcing structure is lapped on the bent part of the end of the bending piece.

11. The column of claim 3, wherein The cross section of the double-layer structure is T-shaped, and in the support direction of the T-shaped structure, two sides respectively constitute the inner layer and the outer layer.

12. The column of claim 1, wherein It also includes stress dispersion rib on the outside of the double-layer structure, which can drain and disperse external force on the column body.

13. A column forming a frame according to claim 12, characterized in that The stress dispersion rib forms a shunt path that disperses from the inside of the double-layer structure or the outside of the double-layer structure towards both sides of the double-layer structure.

14. The column of claim 12, wherein The stress dispersion rib is a convex structure or a concave structure, which is arranged on the inside or outside of the column body.

15. A column forming a frame according to claim 14, characterized in that When the cross section of the double-layer structure is T-shaped, the stress dispersion rib is located on the outer surface of the horizontal side of the T-shaped structure to form a storage cavity.

16. A column forming a frame according to claim 15, characterized in that The stress dispersion rib is one or more to form a storage space along the horizontal direction of the T-shaped structure.

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