An impact protection structure for a modular multi-level cell design

Abstract

The present application relates to the technical field of shock-absorbing devices, and particularly relates to an anti-impact structure with a modular multi-level unit design, comprising a shell unit, a plurality of first energy-dissipating units are arranged in the shell unit, the first energy-dissipating units are connected through flexible materials, the first energy-dissipating units can relatively slide in the shell unit, a plurality of second energy-dissipating units are arranged in the first energy-dissipating units, and the second energy-dissipating units can collide and extrude each other in the first energy-dissipating units. The relative movement between the first energy-dissipating units is hindered by the constraint force of the flexible materials, external impact loads are absorbed and consumed, and the energy dissipation capacity of the overall structure is enhanced; the mutual collision and extrusion of the second energy-dissipating units in the first energy-dissipating units further improves the energy dissipation efficiency of the overall structure, effectively and quickly dissipates the external impact loads, and increases the impact resistance of the overall structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorption devices, and particularly relates to an anti-impact structure of a modular multi-level unit design. BACKGROUND

[0002] The fields of aerospace, unmanned aerial vehicle systems and the like all have common needs for resisting impact and achieving efficient kinetic energy absorption and dissipation, such as unmanned aerial vehicle anti-collision, robot high-acceleration interaction and the like. Efficiently absorbing impact energy and improving absorption efficiency while having a low weight are the goals pursued by the design of such energy absorption structures.

[0003] However, current traditional energy absorption structure design schemes mainly focus on a single material and structure, resulting in a low energy absorption and dissipation efficiency. In the face of high-acceleration impact loads, it is difficult to achieve high-efficiency energy dissipation. Due to the differences between different shapes and structures, it is inconvenient to simultaneously carry multiple energy absorption structures, which poses a great challenge to the normal operation of equipment. SUMMARY

[0004] The present application relates to the technical field of shock absorption devices, and particularly relates to an anti-impact structure of a modular multi-level unit design.

[0005] To solve the above technical problems, an embodiment of the present application provides a technical scheme as follows:

[0006] An anti-impact structure of a modular multi-level unit design, comprising an outer shell unit, a plurality of first energy dissipation units are arranged in the outer shell unit, the first energy dissipation units are connected by flexible materials, the first energy dissipation units can slide relative to each other in the outer shell unit, a plurality of second energy dissipation units are arranged in the first energy dissipation units, and the second energy dissipation units can collide and extrude each other in the first energy dissipation units.

[0007] Further, the first energy dissipation unit comprises a plurality of energy dissipation units, the energy dissipation unit is a cavity structure with a polygonal structure in cross section, the energy dissipation units are arranged in layers along the axis of the outer shell unit, and the energy dissipation units in the same layer have the same shape.

[0008] Further, the energy dissipation units are distributed in a gradient along the axis of the outer shell unit, and the outer diameters of the energy dissipation units at different levels increase or decrease gradually.

[0009] Further, the second energy dissipation unit is a light ball, and the second energy dissipation units are naturally stacked in the cavities of the energy dissipation units.

[0010] Further, the cross section of the energy dissipation unit is a regular hexagon.

[0011] Further, the shell unit is a cavity structure with a polygonal cross section, and the shell unit has a rigid structure.

[0012] Further, a plurality of shell units are included, the shell units contain magnetic materials, and the plurality of shell units can be mutually adsorbed.

[0013] Further, the shell unit has a regular hexagonal cross section.

[0014] Further, the flexible material penetrates the inside of the shell unit by heat melting, and the flexible material flexibly connects the first energy dissipation units, the shell units, and the first energy dissipation units.

[0015] Further, the shell unit is made of ceramic.

[0016] The impact-resistant structure of the modular multi-level unit design provided by the present application has the following advantages compared with the prior art. The plurality of first energy dissipation units are arranged in the shell unit, and the first energy dissipation units are flexibly connected. The relative movement between the first energy dissipation units is hindered by the constraint force of the flexible material, the external impact load is absorbed and consumed, and the energy dissipation capacity of the overall structure is enhanced. The mutual collision and extrusion of the second energy dissipation units in the first energy dissipation units further improves the energy dissipation efficiency of the overall structure, effectively and quickly dissipates the external impact load, and increases the impact resistance of the overall structure. The energy dissipation units arranged in multiple layers of the first energy dissipation units further enhance the impact load bearing capacity of the overall structure and increase the energy absorption and dissipation efficiency of the external impact load. The shell unit has a polygonal cross section, so that the shell unit can be modularly assembled, the shell units can be densely arranged, and the space utilization and manufacturing efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these illustrative examples do not limit the embodiments and elements in the figures with the same reference numerals indicate like elements unless otherwise specifically indicated, the figures in the drawings do not constitute a proportional limit.

[0018] Figure 1 is an exploded view of the impact-resistant structure of the modular multi-level unit design in the embodiment of the present application;

[0019] Figure 2 is a front view of the impact-resistant structure of the modular multi-level unit design in the embodiment of the present application;

[0020] Figure 3 is an A-A sectional view in the embodiment of the present application; Figure 2 ​

[0021] Figure 4 is a schematic view of the position structure of the first energy dispersion unit and the second energy dispersion unit in the embodiment of the present application;

[0022] Figure 5 is an attached Figure 2 schematic view of the position structure of the first energy dispersion unit and the second energy dispersion unit in the embodiment of the present application;

[0023] Figure 6 is a schematic view of the structure of the first energy dispersion unit in the embodiment of the present application.

[0024] Reference signs: 10, housing unit; 11, cover; 12, shell; 13, base; 20, first energy dispersion unit; 21, bottom layer energy consumption unit; 22, middle layer energy consumption unit; 23, upper layer energy consumption unit; 30, second energy dispersion unit; 40, flexible material. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, even without these technical details and based on various changes and modifications of the following embodiments, the technical solutions claimed in the claims of the present application can be implemented.

[0026] As Figures 1-4As shown, one embodiment of the application relates to a shockproof structure of a modular multi-level unit design, comprising a shell unit 10, the shell unit 10 comprising a shell 12, which is a hollow cylindrical structure, and the shell 12 and the cover 11 and the base 13 at both ends form a sealed hollow cavity structure, a plurality of first energy dissipation units 20 are arranged in the cavity of the shell unit 10, gaps are arranged between the plurality of first energy dissipation units 20, the first energy dissipation units 20 can slide relative to each other in the shell unit 10, the first energy dissipation units 20 are connected by flexible material 40, the flexible material 40 is poured in the cavity of the shell unit 10, and the first energy dissipation units 20 and the inner wall of the cavity of the shell unit 10, and the first energy dissipation units 20 and the first energy dissipation units 20 are flexibly connected to provide a certain restraint force to prevent the first energy dissipation units 20 from falling off. Preferably, the flexible material 40 penetrates the inside of the shell unit 10 by hot melting, and the first energy dissipation units 20 and the shell unit 10, and the first energy dissipation units 20 and the first energy dissipation units 20 are flexibly connected. It must be ensured that when the shockproof structure of the modular multi-level unit design provided in the embodiment of the application is subjected to external impact load, the first energy dissipation units 20 slide relative to each other, absorb and dissipate the external impact load, and under the action of the restraint force of the flexible material 40, hinder the relative movement between the first energy dissipation units 20, such as shearing and sliding, absorb and consume the external impact load, further improve the energy dissipation effect, and enhance the energy dissipation capacity of the overall structure. The flexible material 40 provides a relative displacement space for the first energy dissipation units 20, and the interfacial adhesion also enhances the energy dissipation capacity of the overall structure; a plurality of second energy dissipation units 30 are arranged in the first energy dissipation units 20, the second energy dissipation units 30 can collide and extrude each other in the first energy dissipation units 20, and preferably the second energy dissipation units 30 are light spheres, and the second energy dissipation units 30 are naturally stacked in the cavity of the first energy dissipation units 20. In the shockproof structure of the modular multi-level unit design in the embodiment of the application, when subjected to external impact load, the second energy dissipation units 30 in the cavity of the first energy dissipation units 20 move in modes such as friction, extrusion, collision and separation, and the energy of the external load is absorbed and dissipated in these movement processes, achieving effective and rapid dissipation of the external impact load and increasing the impact resistance of the overall structure.

[0027] In one embodiment, the anti-impact structure of the modular multi-level unit design comprises a plurality of shell units 10 which can be combined into a densely arranged structure to effectively increase the space utilization of the overall structure. For example, the cross section of the shell unit 10 can adopt a polygonal structure, such as a triangle, a square, a hexagon, etc. Preferably, the shell unit 10 adopts a cylindrical structure with a regular hexagonal cross section. The shell unit 10 has a rigid structure and can effectively withstand the first impact of external impact load. In one exemplary example, the shell unit 10 is made of a rigid material and contains a magnetic material. The plurality of shell units 10 can be attracted to each other. In the embodiment of the present application, the anti-impact structure of the modular multi-level unit design can further enhance the energy dissipation of the overall structure by the magnetic restraint force between the shell units 10 when subjected to external impact load, and can prevent the shell units 10 from escaping under high-speed impact.

[0028] As shown in Figures 5-6 In one embodiment, the anti-impact structure of the modular multi-level unit design comprises a plurality of shell units 10 which can be combined into a densely arranged structure to effectively increase the space utilization of the overall structure. For example, the cross section of the shell unit 10 can adopt a polygonal structure, such as a triangle, a square, a hexagon, etc. Preferably, the shell unit 10 adopts a cylindrical structure with a regular hexagonal cross section. The shell unit 10 has a rigid structure and can effectively withstand the first impact of external impact load. In one exemplary example, the shell unit 10 is made of a rigid material and contains a magnetic material. The plurality of shell units 10 can be attracted to each other. In the embodiment of the present application, the anti-impact structure of the modular multi-level unit design can further enhance the energy dissipation of the overall structure by the magnetic restraint force between the shell units 10 when subjected to external impact load, and can prevent the shell units 10 from escaping under high-speed impact.

[0029] As shown in Figures 3-4 In one embodiment, the anti-impact structure of the modular multi-level unit design comprises a plurality of shell units 10 which can be combined into a densely arranged structure to effectively increase the space utilization of the overall structure. For example, the cross section of the shell unit 10 can adopt a polygonal structure, such as a triangle, a square, a hexagon, etc. Preferably, the shell unit 10 adopts a cylindrical structure with a regular hexagonal cross section. The shell unit 10 has a rigid structure and can effectively withstand the first impact of external impact load. In one exemplary example, the shell unit 10 is made of a rigid material and contains a magnetic material. The plurality of shell units 10 can be attracted to each other. In the embodiment of the present application, the anti-impact structure of the modular multi-level unit design can further enhance the energy dissipation of the overall structure by the magnetic restraint force between the shell units 10 when subjected to external impact load, and can prevent the shell units 10 from escaping under high-speed impact.

[0030] The friction force of the second energy dissipation unit 30 when interacting is related to the stress as follows:

[0031]

[0032] Wherein alpha is a function related to the friction slip surface, sigma a is the impact stress, sigma R is the normal stress, p0 is the surface stress of the unit:

[0033]

[0034] Wherein P is the contact force, R is the radius of the second energy dissipation unit 30, w is the number of the second energy dissipation unit 30, and p0 is the surface stress of the second energy dissipation unit 30. The second energy dissipation unit 30 in a limited space will increase the probability of collision with the wall surface, further improving the energy dissipation efficiency.

[0035] The impact-resistant structure of the modular multi-level unit design provided by the application can absorb and consume external impact load by setting a plurality of first energy dissipation units and a flexible connection of the first energy dissipation units in the shell unit, and can enhance the energy dissipation capacity of the overall structure by the restraint force of the flexible material to hinder the relative movement between the first energy dissipation units; the further improvement of the energy dissipation efficiency of the overall structure can be realized by the mutual collision and extrusion of the second energy dissipation units in the first energy dissipation units, the effective and rapid dissipation of the external impact load can be realized, and the anti-impact capacity of the overall structure can be increased; the bearing capacity of the overall structure to impact load is further enhanced by the energy dissipation unit of the first energy dissipation unit in multiple layers, the absorption and dissipation efficiency of the energy of the external impact load is increased; the shell unit can be modularly assembled, and the shell units can be densely arranged between each other by the setting of the polygonal cross section of the shell unit, so that the space utilization and the manufacturing efficiency are improved.

[0036] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the application.

Claims

1. A modular multi-level unit design of impact-resistant structure, characterized in that: The invention comprises a plurality of shell units (10), wherein the shell units (10) are a cavity structure with a polygonal cross section and a rigid structure containing magnetic material, and the plurality of shell units (10) can be mutually adsorbed; a plurality of first energy dissipation units (20) are arranged in the shell unit (10), and the first energy dissipation units (20) are connected to each other through a flexible material (40); the flexible material (40) penetrates the inside of the shell unit (10) by hot melting, and flexibly connects the first energy dissipation units (20) to the shell unit (10), and the first energy dissipation units (20) to the first energy dissipation units (20); the first energy dissipation units (20) can be mutually adsorbed to each other in the shell unit (10); The first energy dissipation unit (20) is provided with a plurality of second energy dissipation units (30), and the second energy dissipation units (30) can collide and squeeze with each other in the first energy dissipation unit (20); each of the first energy dissipation units (20) includes a plurality of energy dissipation units, and the energy dissipation units are cavity structures with polygonal cross sections. The energy dissipation units are arranged in layers along the axial direction of the shell unit (10), and the energy dissipation units in the same layer of the plurality of first energy dissipation units (20) have the same shape; the first energy dissipation units (20) are distributed in a gradient manner along the axial direction of the shell unit (10), and the outer diameters of the energy dissipation units at different layers increase or decrease step by step.

2. The impact-resistant structure of modular multi-level unit design according to claim 1, characterized in that: The second energy dissipation unit (30) is a lightweight sphere, and the second energy dissipation unit (30) is naturally stacked in the cavity of the energy consumption unit.

3. The impact-resistant structure of modular multi-level unit design according to claim 2, characterized in that: The cross section of the energy consumption unit is a regular hexagon.

4. The impact-resistant structure of modular multi-level unit design according to any one of claims 1 to 3, characterized in that: The cross section of the housing unit (10) is a regular hexagon.

5. The impact-resistant structure of modular multi-level unit design according to claim 1, characterized in that: The housing unit (10) is made of ceramic.

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