Metal foot pier of aviation cardboard

Abstract

The utility model relates to the field of aviation cardboards, in particular to a metal foot pier of an aviation cardboard, which comprises a support column body formed by bending a metal plate, two ends of the metal plate are provided with lap joint surfaces, the two lap joint surfaces are mutually overlapped after the metal plate is encircled by a circle, and the lap joint surfaces form riveting points through riveting, so that the two lap joint surfaces are tightly attached to each other. A reinforcing part is arranged on the surface of the supporting column body and is composed of an arc groove, the arc groove is bent towards the center of the supporting column body, the arc groove extends in the axial direction to form a triangular thorn, a convex corner is arranged in the middle of the arc groove, the bending direction of the convex corner is opposite to that of the arc groove, the section of the reinforcing part is in a W shape, and connection is conducted in the mode that riveting points are formed through riveting. The overall structural rigidity and the connection reliability of the foot pier are improved, the inertia moment of materials is remarkably increased through the reinforcing part, and the rigidity and the bending resistance of the supporting column body are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of aviation pallets, and in particular to metal feet for aviation pallets. Background Technology

[0002] As a core component of air freight, aviation pallets rely on their metal feet for support, positioning, and cushioning. Typically, these metal feet are constructed by bending a single layer of metal sheet into a columnar structure, with both ends secured by specific connecting structures to achieve both lightweight design and sufficient foundation load-bearing capacity.

[0003] The structure of a metal foot block is usually that the two ends of a metal sheet are bent into U-shaped connecting parts. When the two U-shaped parts are closed, they are connected by hooking together. The side wall of the metal foot block has an inner folded surface, which is formed by folding a plane inward toward the center of the foot block.

[0004] The existing metal foot support structure has the following defects:

[0005] 1. The U-shaped connection mainly relies on the hooking force in the lateral direction (i.e., perpendicular to the pier axis) to maintain the connection. When the pier is subjected to load impact or pressure along its axial direction (longitudinal direction) (e.g., when the pallet is loaded with heavy objects or subjected to bumps), the lack of an effective axial locking mechanism between the two U-shaped connections makes it very easy for relative sliding to occur along the length direction, leading to loosening or even failure of the connection, which seriously affects the overall structural stability and load-bearing capacity of the pier.

[0006] 2. To improve column stiffness, existing piers often incorporate inwardly bent reinforcing structures on the surface of the supporting column. However, common reinforcing structure designs are overly simplistic, typically consisting of an inwardly bent surface with a right-angle turn. This single right-angle turn structure offers limited contribution to improving longitudinal (axial) compressive and bending resistance. Its stress distribution is not optimized, making it prone to localized deformation under large longitudinal loads and failing to provide efficient and uniform longitudinal support. Utility Model Content

[0007] In order to overcome the shortcomings of existing technical solutions, this utility model provides metal feet for aviation pallets, which can effectively solve the technical problems of axial loosening and insufficient longitudinal support.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] The metal footrest of the aviation pallet includes a support column formed by bending a metal sheet. The two ends of the metal sheet are provided with overlapping surfaces. After the metal sheet is wrapped around the perimeter, the two overlapping surfaces overlap each other. The overlapping surfaces are riveted to form a riveting point, so that the two overlapping surfaces fit tightly together. The surface of the support column is provided with a reinforcing part, which is composed of an arc groove. The arc groove bends towards the center of the support column. A convex corner is provided in the middle of the arc groove. The convex corner is opposite to the bending direction of the arc groove, so that the cross section of the reinforcing part is "W" shaped.

[0010] Furthermore, the surface of the support column is provided with three or more reinforcing parts, which are evenly distributed around the axis of the support column.

[0011] Furthermore, the supporting column is cylindrical.

[0012] Furthermore, the cross-section of the rivet point is arched, and the rivet point protrudes towards the center of the supporting column.

[0013] Furthermore, the edge of the arch-shaped rivet point along its length direction separates from the lap surface, and the outer rivet point passes through the inner lap surface.

[0014] Furthermore, the axial extension of the reinforcing portion is formed with triangular spikes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By overlapping the overlapping surfaces of the metal plates at both ends and connecting them using riveting to form rivet points, the defects of existing U-shaped connection methods are completely overcome. The strong mechanical interlocking force generated by the rivet points not only effectively prevents relative displacement of the two overlapping surfaces in the radial direction (i.e., the circumferential direction of the support column), but also firmly locks the relative positions of the two overlapping surfaces in the axial direction (i.e., the height direction of the support column). This ensures that the connection will not slip or loosen when the entire support column is subjected to longitudinal loads, greatly improving the overall structural rigidity and connection reliability of the pier.

[0017] 2. The surface of the supporting column is reinforced with arc grooves. The reinforced section is designed with a "W" shaped cross section. The multi-segment "W" shaped structure significantly increases the moment of inertia of the material, greatly improves the stiffness and bending resistance of the supporting column itself, and makes the stress distribution more uniform and reasonable, so as to more efficiently distribute and transfer the longitudinal load to the entire column wall. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a schematic diagram of the riveting point in this utility model;

[0021] The numbers in the diagram are: 1-support column, 2-lap joint, 3-riveting point, 4-reinforcing part, 5-triangular spike, 6-arc groove, 7-convex corner. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is combined Figures 1-3 The metal feet of the aviation pallet of this utility model are described in detail below:

[0024] The metal foot block for aviation pallets includes a support column 1 formed by bending metal sheets. The two ends of the metal sheets have overlapping surfaces 2. After the metal sheets are wrapped around the perimeter, the two overlapping surfaces 2 overlap each other. The overlapping surfaces 2 are riveted together to form a rivet point 3, ensuring a tight fit. By overlapping the overlapping surfaces 2 at both ends of the metal sheets and connecting them using rivet points 3, the defects of existing U-shaped connection methods are completely overcome. The strong mechanical interlocking force generated by the rivet points 3 not only effectively prevents relative displacement of the two overlapping surfaces 2 in the radial direction (i.e., the circumferential direction of the support column 1), but also firmly locks the relative position of the two overlapping surfaces 2 in the axial direction (i.e., the height direction of the support column 1). This ensures that the connection will not slip or loosen when the entire support column 1 is subjected to longitudinal loads, greatly improving the overall structural rigidity and connection reliability of the foot block. The cross-section of the riveting point 3 is arched, protruding towards the center of the supporting column 1 to form a localized reinforced zone. Its arched structure exhibits excellent shear and tensile resistance. The arched protrusion effectively resists radial separation between the lap surfaces 2, while absorbing some axial impact energy through surface deformation, significantly improving the connection point's resistance to failure under extreme loads and ensuring the long-term reliability of the riveting point 3 under high-intensity conditions. The edge of the arched riveting point 3 along its length separates from the lap surface 2, with the outer riveting point 3 penetrating the inner lap surface 2, forming a mechanical interlocking mechanism. This penetrating structure causes the inner and outer lap surfaces 2 to physically engage, completely eliminating radial relative displacement.

[0025] The surface of the supporting column 1 is provided with a reinforcing part 4, which is composed of an arc groove 6. The arc groove 6 bends toward the center of the supporting column 1. The axial extension of the arc groove 6 forms a triangular spike 5, which is used to connect the bottom plate and the front plate of the aviation card plate. A convex angle 7 is provided in the middle of the arc groove 6. The convex angle 7 is opposite to the bending direction of the arc groove 6, so that the cross section of the reinforcing part 4 is "W" shaped. The multi-segment bending "W" shaped structure significantly increases the moment of inertia of the material, greatly improves the stiffness and bending resistance of the supporting column 1 itself, and makes the stress distribution more uniform and reasonable, and can more efficiently distribute and transfer the longitudinal load to the entire column wall.

[0026] The surface of the supporting column 1 is provided with five reinforcing parts 4, which are evenly distributed around the axis of the supporting column 1. This makes the circumferential force on the supporting column 1 more balanced, significantly improving the column's resistance to radial deformation. At the same time, the five reinforcing parts 4 work together to bear the longitudinal load, avoiding local stress concentration, further optimizing the load transfer path, and enhancing the overall stability and crush resistance of the pier under complex stress conditions. The supporting column 1 is cylindrical, making the structural stress distribution more consistent with axisymmetric characteristics and eliminating the risk of stress concentration at polygonal corners. The cylindrical surface and the "W"-shaped reinforcing parts 4 work together to provide more uniform radial stiffness, improving resistance to lateral impact.

[0027] 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.

Claims

1. A metal foot support for an aviation pallet, comprising a support column formed by bending metal sheet, characterized in that: The metal sheet has overlapping surfaces at both ends. After the metal sheet is wrapped around the perimeter, the two overlapping surfaces overlap each other. The overlapping surfaces are riveted to form a rivet point, so that the two overlapping surfaces fit tightly together. The surface of the support column is provided with a reinforcing part, which is composed of an arc groove. The arc groove bends toward the center of the support column. A convex corner is provided in the middle of the arc groove. The convex corner is opposite to the bending direction of the arc groove, so that the cross section of the reinforcing part is "W" shaped.

2. The metal feet of the aviation pallet according to claim 1, characterized in that: The surface of the support column is provided with three or more reinforcing parts, which are evenly distributed around the axis of the support column.

3. The metal feet of the aviation pallet according to claim 1, characterized in that: The supporting column is cylindrical.

4. The metal feet of the aviation pallet according to any one of claims 1-3, characterized in that: The cross-section of the rivet point is arched, and the rivet point protrudes towards the center of the supporting column.

5. The metal feet of the aviation pallet according to claim 4, characterized in that: The edge of the arch-shaped rivet point along its length is separated from the lap surface, and the outer rivet point passes through the inner lap surface.

6. The metal feet of the aviation pallet according to any one of claims 1-3, characterized in that: The axial extension of the reinforcing part forms triangular spikes.

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