A lightweight high-strength framework structure

Abstract

The utility model belongs to mechanical structure design and manufacturing technical field discloses a kind of lightweight high-strength framework structure, including multiple hollow structure units and multidirectional connecting nodes, the cross section of hollow structure unit is regular polygon, multiple connecting surfaces are equipped on the outer surface of connecting node, and the end of hollow structure unit and the connecting surface of connecting node are detachably connected by fastener, and form space truss structure, connecting flange is fixedly installed in the end of hollow structure unit, through hole in the form of circumferential array arrangement is set up on connecting flange, and is installed on connecting node by fastener, hollow cavity in hollow structure unit is equipped with reinforcing rib extending along its axial direction, and reinforcing rib separates multiple sub-chambers into hollow cavity.The utility model realizes quick assembly and partial replacement under the synergistic effect of hollow structure unit, standardization connecting node, connecting flange and fastener, significantly improves maintenance efficiency and supports structure dynamic expansion.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structure design and manufacturing technology, and in particular to a lightweight high-strength skeleton structure. Background Technology

[0002] In modern industrial design, the skeleton structure is the core load-bearing component of many devices and equipment. Its performance is directly related to the weight, strength, stability and energy consumption of the overall product. Traditional skeleton structures are mostly made of solid metal materials and connected by welding or bolts. Although this ensures strength, they are often heavy, consume a lot of materials, and have high inertia, resulting in slow motion response and low energy efficiency.

[0003] To reduce weight, existing technologies often employ the following methods: 1) Material lightweighting: using high-strength aluminum alloys, titanium alloys, or carbon fiber composites to replace ordinary steel. However, this method is costly, and the anisotropy of the materials themselves or connection process issues introduce weaknesses; 2) Topology optimization: using computer algorithms to design hollow structures and remove materials with low stress. However, the optimized form is usually very complex, difficult to manufacture, costly, and mostly integrally molded, which is not conducive to maintenance and modular replacement; 3) Bionic structure: imitating natural lightweight structures such as honeycomb and spider webs. However, when these structures are subjected to multi-directional complex loads, stress concentration is easily generated at their connection points, and the stability needs to be improved. Therefore, we propose a lightweight high-strength skeleton structure. Utility Model Content

[0004] To address the technical problems mentioned in the background section, this utility model provides the following technical solution:

[0005] A lightweight, high-strength frame structure includes multiple hollow structural units and multi-directional connection nodes. The cross-section of each hollow structural unit is a regular polygon, and the outer surface of each connection node has multiple connection surfaces. The ends of each hollow structural unit are detachably connected to the connection surfaces of the connection nodes by fasteners, forming a spatial truss structure. This facilitates multi-directional load distribution and localized repair and replacement, reducing maintenance costs.

[0006] As a technical solution for the lightweight high-strength skeleton structure described in this utility model, the ends of the hollow structural units are all fixedly installed with connecting flanges. The connecting flanges have through holes arranged in a circumferential array and are installed on the connecting nodes by fasteners, so as to enhance the uniformity of stress on the connecting surface, avoid stress concentration, and improve the stability of the nodes.

[0007] As a technical solution for a lightweight high-strength skeleton structure according to the present invention, the hollow structural unit is provided with reinforcing ribs extending along its axial direction in the hollow cavity. The reinforcing ribs divide the hollow cavity into multiple sub-cavities to improve longitudinal compressive strength and achieve a balance between lightweight and stiffness.

[0008] As a technical solution for a lightweight and high-strength skeleton structure according to the present invention, the outer surface of the hollow structural unit is provided with weight-reducing grooves arranged in a linear array, so as to directly reduce the self-weight of the unit while maintaining the integrity of the external structure, without affecting the assembly accuracy.

[0009] As a technical solution for a lightweight and high-strength skeleton structure according to this utility model, the hollow structural unit is made of aluminum alloy, magnesium alloy or engineering plastic through extrusion molding process, so as to take into account both low-cost mass production and lightweight requirements, and solve the problem of high cost of traditional alloy / composite materials.

[0010] As a technical solution for a lightweight high-strength frame structure according to this utility model, the regular polygon is an equilateral triangle, a square, or a regular hexagon, so as to provide symmetrical force characteristics, improve torsional resistance, and avoid the risk of local deformation caused by irregular cross-sections.

[0011] As a technical solution for a lightweight, high-strength skeleton structure as described in this utility model, the connection node is a cross-shaped, spherical, or polygonal component to adapt to different angle connection requirements and increase the contact surface, thereby alleviating the stress concentration problem at the connection point of the biomimetic structure.

[0012] As a technical solution for a lightweight high-strength skeleton structure according to the present invention, the fasteners include pre-embedded bolts installed at the connection nodes and corresponding to the through holes, and nuts installed on the pre-embedded bolts, so as to avoid damage to the structure by drilling on site and to ensure the reliability of the detachable connection.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model, through the synergistic effect of hollow structural units, standardized connection nodes, connecting flanges and fasteners, enables rapid assembly and partial replacement, significantly improving maintenance efficiency and supporting dynamic structural expansion.

[0015] 2. This utility model adopts a composite lightweight design by using a regular polygonal cross section, axial stiffeners and weight-reducing grooves. While reducing its own weight, it disperses the load through multi-directional connection nodes, solving the problems of difficult manufacturing of traditional topology optimization structures and insufficient stability of biomimetic structures. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from a bottom view.

[0019] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1. Hollow structural unit; 101. Connecting flange; 102. Through hole; 103. Reinforcing rib; 104. Sub-chamber; 105. Weight reduction groove; 2. Connecting node; 3. Embedded bolt; 4. Nut. Detailed Implementation

[0023] 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.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] Reference Figures 1-4 A lightweight, high-strength frame structure is provided, comprising multiple hollow structural units 1 and multi-directional connection nodes 2. The cross-section of the hollow structural unit 1 is a regular polygon, and the outer surface of the connection node 2 is provided with multiple connection surfaces. The ends of the hollow structural units 1 are detachably connected to the connection surfaces of the connection nodes 2 by fasteners, forming a spatial truss structure. In application, the modular spatial truss structure enables multi-directional load distribution, while the detachable design facilitates local maintenance and replacement, reducing maintenance costs.

[0028] Reference Figure 2 and Figure 3 The ends of the hollow structural unit 1 are all fixedly installed with connecting flanges 101. The connecting flanges 101 have through holes 102 arranged in a circular array and are installed on the connecting node 2 by fasteners. In application, the array of connecting flanges 101 and through holes 102 enhances the uniformity of stress on the connecting surface, avoids stress concentration, and improves the stability of the node.

[0029] Reference Figure 4 The hollow structure unit 1 has a reinforcing rib 103 extending along its axial direction in the hollow cavity. The reinforcing rib 103 divides the hollow cavity into multiple sub-chambers 104. In application, the longitudinal compressive strength is improved by the axial reinforcing rib 103, and the sub-chambers 104 further optimize the material distribution, achieving a balance between lightweight and stiffness.

[0030] Reference Figure 1 , Figure 2 as well as Figure 4 The outer surface of the hollow structural unit 1 is provided with weight-reducing grooves 105 arranged in a linear array. In application, the linear weight-reducing grooves 105 directly reduce the weight of the unit while maintaining the integrity of the external structure, without affecting the assembly accuracy.

[0031] Reference Figure 1 , Figure 2 as well as Figure 4The hollow structural unit 1 is made of aluminum alloy, magnesium alloy or engineering plastic through extrusion molding process. In application, high specific strength materials are used in combination with extrusion molding process to take into account the requirements of low cost mass production and lightweight, and solve the problem of high cost of traditional alloy / composite materials.

[0032] Reference Figure 1 and Figure 4 Regular polygons are equilateral triangles, squares, or regular hexagons. In applications, regular polygonal cross-sections provide symmetrical stress characteristics, improve torsional resistance, and avoid the risk of local deformation caused by irregular cross-sections.

[0033] Reference Figure 2 and Figure 3 Connection node 2 can be a cross-shaped, spherical, or polygonal component. In application, the cross-shaped / spherical node can adapt to different angle connection requirements, while the polygonal node increases the contact surface and alleviates the stress concentration problem at the connection point of the biomimetic structure.

[0034] Reference Figure 2 and Figure 3 The fasteners include embedded bolts 3 installed on the connection node 2 and corresponding to the through hole 102, and nuts 4 installed on the embedded bolts 3. In application, the embedded bolts 3 avoid damage to the structure by drilling on site, and the locking method of the nuts 4 simplifies the assembly process and ensures the reliability of the detachable connection.

[0035] This utility model provides a lightweight and high-strength skeleton structure. Through the synergistic effect of hollow structural unit 1, standardized connection node 2, connection flange 101 and fasteners, it can achieve rapid assembly and partial replacement, significantly improve maintenance efficiency and support dynamic structural expansion. At the same time, it adopts a composite lightweight design with regular polygonal cross section, axial stiffener 103 and weight reduction groove 105. While reducing its own weight, it uses multi-directional connection node 2 to distribute the load, solving the problems of difficult manufacturing of traditional topology optimization structure and insufficient stability of biomimetic structure.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lightweight, high-strength frame structure, characterized in that: It includes multiple hollow structural units (1) and multi-directional connection nodes (2). The cross-section of the hollow structural unit (1) is a regular polygon. The outer surface of the connection node (2) is provided with multiple connection surfaces. The ends of the hollow structural unit (1) and the connection surfaces of the connection node (2) are detachably connected by fasteners to form a space truss structure.

2. The lightweight high-strength frame structure according to claim 1, characterized in that: The ends of the hollow structural unit (1) are all fixedly installed with connecting flanges (101). The connecting flanges (101) have through holes (102) arranged in a circular array and are installed on the connecting node (2) by the fasteners.

3. The lightweight high-strength frame structure according to claim 1, characterized in that: The hollow structural unit (1) has a reinforcing rib (103) extending along its axial direction inside the hollow cavity, and the reinforcing rib (103) divides the hollow cavity into multiple sub-chambers (104).

4. The lightweight high-strength frame structure according to claim 1, characterized in that: The outer surface of the hollow structural unit (1) is provided with weight-reducing grooves (105) arranged in a linear array.

5. The lightweight high-strength frame structure according to claim 1, characterized in that: The hollow structural unit (1) is made of aluminum alloy, magnesium alloy or engineering plastic through extrusion molding process.

6. The lightweight high-strength frame structure according to claim 1, characterized in that: The regular polygon is an equilateral triangle, a square, or a regular hexagon.

7. The lightweight high-strength frame structure according to claim 1, characterized in that: The connecting node (2) is a cross-shaped, spherical, or polygonal component.

8. The lightweight high-strength frame structure according to claim 2, characterized in that: The fasteners include embedded bolts (3) installed on the connection node (2) and corresponding to the through hole (102) respectively, and nuts (4) installed on the embedded bolts (3).

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