A composite deformable metamaterial multi-stage replaceable metal shock absorber

Abstract

This invention discloses a multi-stage replaceable metal shock absorber made of composite deformable metamaterials, relating to the field of shock absorbers. It includes a shock absorber assembly with an elastic energy storage and reset mechanism using a shock-absorbing spring, and a front-end fixed block and piston rod for accurate vibration transmission. A buffer assembly utilizes a shock-absorbing cylinder and a replaceable wear-resistant copper alloy open ring to construct a low-friction sliding interface, while a solid metal corrugated washer and a diamond-patterned rigid block provide gap compensation and additional damping. The first-stage metamaterial layer assembly absorbs energy through the negative Poisson's ratio deformation of the first, second, and third concave hexagonal honeycomb layers, triggering it step-by-step through the expansion and contraction of the first, second, and third sleeves. The second-stage metamaterial layer assembly utilizes the large plastic deformation of the first, second, and third body-centered cubic lattice blocks, achieving high load-bearing capacity and energy dissipation through multi-stage nesting of the fourth, fifth, and sixth sleeves, forming a multi-stage sequential energy absorption system.

Description

Technical Field

[0001] This invention relates to the field of shock absorbers, specifically a multi-stage replaceable metal shock absorber made of composite deformable metamaterial. Background Technology

[0002] Traditional shock absorbers typically rely solely on a single spring-damping structure for energy dissipation, with fixed stiffness characteristics that cannot adaptively adjust to changes in impact loads. Their energy dissipation efficiency drops significantly when facing wide-frequency, multi-condition vibrations. While metallic metamaterials possess the potential for lightweight and high energy absorption, traditional metamaterial shock absorber structures are mostly integrated designs. Once internal energy-dissipating components undergo plastic deformation or fatigue damage, the entire structure must be replaced, resulting in high maintenance costs and long maintenance cycles. Furthermore, the lack of interlayer isolation and tiered triggering mechanisms prevents each energy-dissipating stage from working independently and yielding sequentially, hindering multi-stage sequential energy absorption and severely limiting the damping bandwidth and reliability. In addition, the internal friction pairs of traditional metal shock absorbers are prone to wear, and key contact surfaces lack replaceable wear-resistant structures. Over long-term use, the gaps increase, leading to impacts and noise, further reducing service life and stability. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a multi-stage replaceable metal shock absorber made of composite deformable metamaterial.

[0004] This invention is implemented as follows: a multi-stage replaceable metal shock absorber based on composite deformable metamaterials is constructed. The device includes a shock absorber assembly, a partition buffer assembly, a first-stage metamaterial layer assembly, and a second-stage metamaterial layer assembly. The shock absorber assembly is fixedly connected to the partition buffer assembly at its center. The partition buffer assembly is slidably connected to the first-stage metamaterial layer assembly internally, and the partition buffer assembly is slidably connected to the second-stage metamaterial layer assembly internally. The shock absorber assembly further includes a shock absorber seat, a rear-end fixing block, a shock absorber spring, a connecting end seat, a piston rod, and a front-end fixing block. The shock absorber seat is fixedly connected to the partition buffer assembly at its center. The rear-end fixing block is fixedly connected to the rear end of the shock absorber seat. The shock absorber spring is fixedly connected to the front end of the shock absorber seat. The connecting end seat is fixedly connected to the front end of the shock absorber spring. The front end of the piston rod is fixedly connected to the connecting end seat, and the front-end fixing block is fixedly connected to the front end of the connecting end seat.

[0005] Preferably, the separating buffer assembly includes a shock-absorbing cylinder, a wear-resistant copper alloy open ring, a solid metal corrugated washer, a diamond-patterned rigid block, a secondary interlayer isolation steel plate, and a primary interlayer isolation steel plate. The middle part of the shock-absorbing seat is fixedly connected to the shock-absorbing cylinder. The wear-resistant copper alloy open ring is slidably connected to the inside of the shock-absorbing cylinder. The solid metal corrugated washer is slidably connected to the rear end of the wear-resistant copper alloy open ring. The diamond-patterned rigid block is slidably connected to the inside of the wear-resistant copper alloy open ring and to the front end of the solid metal corrugated washer. The secondary interlayer isolation steel plate is slidably connected to the inside of the wear-resistant copper alloy open ring, and the primary interlayer isolation steel plate is slidably connected to the inside of the wear-resistant copper alloy open ring.

[0006] Preferably, the first-stage metamaterial layer assembly includes a first concave hexagonal honeycomb, a second concave hexagonal honeycomb, a third concave hexagonal honeycomb, a first sleeve, a second sleeve, and a third sleeve. The front end of the wear-resistant copper alloy open ring is slidably connected to the inside of the first concave hexagonal honeycomb. The second concave hexagonal honeycomb is slidably connected to the inside of the wear-resistant copper alloy open ring and to the rear end of the first concave hexagonal honeycomb. The third concave hexagonal honeycomb is slidably connected to the inside of the wear-resistant copper alloy open ring and to the rear end of the second concave hexagonal honeycomb. The first sleeve is fixedly connected to the middle of the first concave hexagonal honeycomb. The second sleeve is fixedly connected to the middle of the second concave hexagonal honeycomb. The inner wall of the second sleeve is slidably connected to the outer wall of the first sleeve. The third sleeve is fixedly connected to the middle of the third concave hexagonal honeycomb. The inner wall of the third sleeve is slidably connected to the outer wall of the second sleeve and to the middle of the first-stage interlayer isolation steel plate.

[0007] Preferably, the second-order metamaterial layer assembly includes a first body-centered cubic lattice block, a second body-centered cubic lattice block, a third body-centered cubic lattice block, a fourth sleeve, a fifth sleeve, and a sixth sleeve. The wear-resistant copper alloy open ring is slidably connected to the first body-centered cubic lattice block. The second body-centered cubic lattice block is slidably connected to the rear end of the first body-centered cubic lattice block. The third body-centered cubic lattice block is slidably connected to the rear end of the second body-centered cubic lattice block. The fourth sleeve is fixedly connected to the middle of the first body-centered cubic lattice block. The fifth sleeve is fixedly connected to the middle of the second body-centered cubic lattice block. The sixth sleeve is fixedly connected to the middle of the third body-centered cubic lattice block.

[0008] Preferably, the first body-centered cubic lattice block is slidably connected to the rear end of the primary interlayer isolation steel plate.

[0009] Preferably, the second body-centered cubic lattice block is slidably connected to the inside of the wear-resistant copper alloy open ring.

[0010] Preferably, the third body-centered cubic lattice block is slidably connected inside the wear-resistant copper alloy open ring.

[0011] Preferably, the inner wall of the fourth sleeve is slidably connected to the outer wall of the third sleeve.

[0012] Preferably, the inner wall of the fifth sleeve is slidably connected to the outer wall of the fourth sleeve.

[0013] Preferably, the inner wall of the sixth sleeve is slidably connected to the outer wall of the fifth sleeve.

[0014] This invention has the following advantages: This invention provides an improved multi-stage replaceable metal shock absorber made of composite deformable metamaterial, which has the following improvements compared to similar devices: The present invention discloses a multi-stage replaceable metal shock absorber based on composite deformable metamaterials. This shock absorber assembly incorporates a shock-absorbing spring for elastic energy storage and reset, and a front-end fixed block and piston rod for accurate vibration transmission. The separation and buffer assembly utilizes a shock-absorbing cylinder and a replaceable wear-resistant copper alloy open ring to construct a low-friction sliding interface. Solid metal corrugated washers and diamond-patterned rigid blocks provide gap compensation and additional damping. The first-stage metamaterial layer assembly absorbs energy through the negative Poisson's ratio deformation of the first, second, and third concave hexagonal honeycomb layers, which are then transmitted through the first sleeve, second sleeve, and third... The three-sleeve telescopic nesting achieves step-by-step triggering; the second-stage metamaterial layer component utilizes the large plastic deformation of the first, second, and third body-centered cubic lattice blocks, and achieves high load-bearing energy dissipation through multi-level nesting of the fourth, fifth, and sixth sleeves; combined with the axial isolation of the first-stage and second-stage interlayer isolation steel plates, it forms a multi-step sequential energy absorption, overcoming the shortcomings of traditional shock absorbers such as single energy dissipation mode, fixed stiffness, and non-replaceable vulnerable parts, significantly widening the energy absorption bandwidth, improving durability and maintenance convenience, and realizing multi-condition adaptive shock absorption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the shock absorber assembly structure of the present invention; Figure 3 This is a schematic diagram of the separator buffer component structure of the present invention; Figure 4 This is a schematic diagram of the first-order metamaterial layer component structure of the present invention; Figure 5 This is a schematic diagram of the second-order metamaterial layer component structure of the present invention; Figure 6 This is a schematic diagram of the metamaterial layer splicing structure of the present invention.

[0016] The components include: shock absorber assembly-1, shock absorber seat-11, rear end fixing block-12, shock absorber spring-13, connecting end seat-14, piston rod-15, front end fixing block-16, separator buffer assembly-2, shock absorber cylinder-21, wear-resistant copper alloy open ring-22, solid metal corrugated washer-23, diamond pattern rigid block-24, secondary interlayer isolation steel plate-25, primary interlayer isolation steel plate-26, first-stage metamaterial layer assembly-3, first concave hexagonal honeycomb-31, second concave hexagonal honeycomb-32, third concave hexagonal honeycomb-33, first sleeve-34, second sleeve-35, third sleeve-36, second-stage metamaterial layer assembly-4, first body-centered cubic lattice block-41, second body-centered cubic lattice block-42, third body-centered cubic lattice block-43, fourth sleeve-44, fifth sleeve-45, and sixth sleeve-46. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-6 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0018] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Example 1:

[0021] Please see Figures 1-6The present invention discloses a multi-stage replaceable metal shock absorber based on composite deformable metamaterials, comprising a shock absorber assembly 1, a partition buffer assembly 2, a first-stage metamaterial layer assembly 3, and a second-stage metamaterial layer assembly 4. The shock absorber assembly 1 is fixedly connected to the partition buffer assembly 2 at its center, the partition buffer assembly 2 is slidably connected to the first-stage metamaterial layer assembly 3 internally, and the partition buffer assembly 2 is slidably connected to the second-stage metamaterial layer assembly 4 internally. The shock absorber assembly 1 further includes a shock absorber seat 11, a rear end fixing block 12, a shock absorber spring 13, a connecting end seat 14, a piston rod 15, and a front end fixing block 16. The shock absorber seat 11 is fixedly connected to the partition buffer assembly 2 at its center. The rear fixing block 12 is fixedly connected to the rear end of the shock absorber 11, the shock absorber spring 13 is fixedly connected to the front end of the shock absorber 11, and the connecting end seat 14 is fixedly connected to the front end of the shock absorber spring 13. The front vibration displacement is accurately transmitted to the inside of the shock absorber cylinder 21 through the setting of the piston rod 15, which pushes the internal metamaterial layer components to compress and dissipate energy in sequence. The front end of the piston rod 15 is fixedly connected to the connecting end seat 14. The front fixing block 16 provides an external installation interface for the other end of the shock absorber, bears the vibration load input from the front end, and realizes a reliable connection between the device and the protected equipment. The front fixing block 16 is fixedly connected to the front end of the connecting end seat 14.

[0022] The buffer assembly 2 includes a shock-absorbing cylinder 21, a wear-resistant copper alloy open ring 22, a solid metal corrugated washer 23, a diamond-patterned rigid block 24, a secondary interlayer isolation steel plate 25, and a primary interlayer isolation steel plate 26. The shock-absorbing seat 11 is fixedly connected to the shock-absorbing cylinder 21 in the middle. The wear-resistant copper alloy open ring 22 is slidably connected inside the shock-absorbing cylinder 21. The wear-resistant copper alloy open ring 22 serves as a replaceable wear-resistant bushing inside the shock-absorbing cylinder 21, reducing frictional resistance and wear, and facilitating individual replacement after wear, thus extending the cylinder life. The solid metal corrugated washer... 23 is slidably connected to the rear end of the wear-resistant copper alloy open ring 22. The diamond-patterned rigid block 24 is slidably connected to the interior of the wear-resistant copper alloy open ring 22. The diamond-patterned rigid block 24 is slidably connected to the front end of the solid metal corrugated washer 23. The diamond-patterned rigid block 24 increases friction and contact rigidity by setting its surface pattern, which helps the solid metal corrugated washer 23 to achieve stable support and uniform force transmission. The secondary interlayer isolation steel plate 25 is slidably connected to the interior of the wear-resistant copper alloy open ring 22. The primary interlayer isolation steel plate 26 is slidably connected to the interior of the wear-resistant copper alloy open ring 22.

[0023] This invention provides an improved multi-stage replaceable metal shock absorber made of composite deformable metamaterial, the working principle of which is as follows; First, when using this device, the vibration load is transmitted to the connecting end seat 14 through the front fixing block 16, driving the piston rod 15 to move backward against the initial preload of the damping spring 13. At the same time, the damping spring 13 is gradually compressed, temporarily storing the kinetic energy as elastic potential energy. The damping seat 11 provides a stable installation base for the entire component and reliably supports the damping cylinder 21 in the separation buffer device. The rear fixing block 12 anchors the tail end of the device, forming a closed force transmission circuit. The linear movement of the piston rod 15 accurately guides the front vibration into the cylinder, which is the only power source for triggering the subsequent metamaterial structure's tiered energy consumption. When the external excitation weakens or disappears, the potential energy stored in the damping spring 13 is immediately released, pushing the connecting end seat 14 and piston rod 15 back to their original positions, allowing each internal energy-consuming element to restore its initial gap and prepare for the next impact. Through the cooperation of the elastic element and the rigid force transmission rod, this component not only achieves linear transmission of displacement and elastic buffering, but also ensures the repeatability and responsiveness of the entire cycle of operation. Secondly, when using this equipment, the shock-absorbing cylinder 21 serves as the main load-bearing structure, bearing the radial expansion force during the compression of the internal metamaterial. Simultaneously, it provides a mounting base for the wear-resistant copper alloy open ring 22. The wear-resistant copper alloy open ring 22, as a replaceable low-friction bushing, guides the smooth movement of the internal sliding parts, significantly reducing wear and allowing for individual replacement during maintenance, thus extending the overhaul cycle. The first-level interlayer isolation steel plate 26 separates the first concave hexagonal honeycomb 31, the second concave hexagonal honeycomb 32, and the third concave hexagonal honeycomb within the first-stage metamaterial layer device. The movement axis of the socket 33 is segmented, and its central hole slides with the outer wall of the third sleeve 36, providing a rigid transmission surface for the force flow from the first stage to the second stage. The secondary interlayer isolation steel plate 25 strictly isolates the first stage and the second stage metamaterial layer components, ensuring that the two stages will not be prematurely triggered due to deformation crosstalk. The solid metal corrugated washer 23 at the tail end and the diamond-patterned rigid block 24 combine to provide axial elastic compensation to prevent loosening, and generate additional friction and deformation damping during ultimate compression to absorb residual energy at the end and ensure overall working stability.

[0024] Example 2:

[0025] Please see Figures 1-6The present invention discloses a multi-stage replaceable metal shock absorber based on composite deformable metamaterials. Compared to Embodiment 1, this embodiment further includes: a first-stage metamaterial layer assembly 3 comprising a first concave hexagonal honeycomb 31, a second concave hexagonal honeycomb 32, a third concave hexagonal honeycomb 33, a first sleeve 34, a second sleeve 35, and a third sleeve 36; the front end of a wear-resistant copper alloy open ring 22 is slidably connected to the first concave hexagonal honeycomb 31; the second concave hexagonal honeycomb 32 is slidably connected to the interior of the wear-resistant copper alloy open ring 22 and to the rear end of the first concave hexagonal honeycomb 31; the third concave hexagonal honeycomb 33 is slidably connected to the interior of the wear-resistant copper alloy open ring 22 and to the rear end of the second concave hexagonal honeycomb 32; and the first concave hexagonal honeycomb 31... As the primary energy-dissipating unit, it enters the energy-absorbing state first under small deformation, and responds sensitively to weak vibration and impact. The second concave hexagonal honeycomb 32 continues to compress after the first-stage deformation, providing a progressively increasing energy-dissipating platform and widening the effective energy-absorbing stroke. The third concave hexagonal honeycomb 33, as the final energy-dissipating structure of the first-stage metamaterial layer, provides the maximum resistance of this stage and completes the primary high-load energy absorption. The first sleeve 34 is fixedly connected to the middle of the first concave hexagonal honeycomb 31, the second sleeve 35 is fixedly connected to the middle of the second concave hexagonal honeycomb 32, the inner wall of the second sleeve 35 is slidably connected to the outer wall of the first sleeve 34, the third sleeve 36 is fixedly connected to the middle of the third concave hexagonal honeycomb 33, the inner wall of the third sleeve 36 is slidably connected to the outer wall of the second sleeve 35, and the outer wall of the third sleeve 36 is slidably connected to the middle of the first-stage interlayer isolation steel plate 26.

[0026] The second-order metamaterial layer assembly 4 includes a first body-centered cubic lattice block 41, a second body-centered cubic lattice block 42, a third body-centered cubic lattice block 43, a fourth sleeve 44, a fifth sleeve 45, and a sixth sleeve 46. A wear-resistant copper alloy open ring 22 is slidably connected to the first body-centered cubic lattice block 41. The second body-centered cubic lattice block 42 is slidably connected to the rear end of the first body-centered cubic lattice block 41. The third body-centered cubic lattice block 43 is slidably connected to the rear end of the second body-centered cubic lattice block 42. The fourth sleeve 44 is fixedly connected to the middle of the first body-centered cubic lattice block 41. The fifth sleeve 45 is fixedly connected to the middle of the second body-centered cubic lattice block 42. The sixth sleeve 46 is fixedly connected to the middle of the third body-centered cubic lattice block 43. The first body-centered cubic lattice block 41 is slidably connected to the rear end of the first-level interlayer insulating steel plate 26. The first body-centered cubic lattice block 41, as the pre-energy dissipation unit of the second-order metamaterial layer, is triggered under high load, forming a sharp increase in stiffness with the first order. The second body-centered cubic lattice block 42 continues to deform after the first body-centered cubic lattice block 41 is compacted, extending the energy absorption stroke in the high-load area. The third body-centered cubic lattice block 43, as the end high-strength energy dissipation element, bears the ultimate load and absorbs residual kinetic energy, protecting the rear structure. The second body-centered cubic lattice block 42 is slidably connected to the inside of the wear-resistant copper alloy open ring 22, and the third body-centered cubic lattice block 43 is slidably connected to the inside of the wear-resistant copper alloy open ring 22. The inner wall of the fourth sleeve 44 is slidably connected to the outer wall of the third sleeve 36, the inner wall of the fifth sleeve 45 is slidably connected to the outer wall of the fourth sleeve 44, and the inner wall of the sixth sleeve 46 is slidably connected to the outer wall of the fifth sleeve 45.

[0027] In this embodiment: First, when using this equipment, when the piston rod 15 pushes the first concave hexagonal honeycomb 31, the first sleeve 34, which is fixed at its center, begins to move axially. Due to the concave cell characteristics, the honeycomb structures in the first concave hexagonal honeycomb 31, the second concave hexagonal honeycomb 32, and the third concave hexagonal honeycomb 33 contract laterally and collapse longitudinally, absorbing the initial energy. The outer wall of the first sleeve 34 slides and nests with the inner wall of the second sleeve 35, and the displacement is transferred to the second concave hexagonal honeycomb 32, causing it to collapse successively and providing increasing energy absorption stiffness. Similarly, the outer wall of the second sleeve 35 slides and fits with the inner wall of the third sleeve 36, thereby triggering the deformation of the third concave hexagonal honeycomb 33. The first concave hexagonal honeycomb 31, the second concave hexagonal honeycomb 32, and the third concave hexagonal honeycomb 33 are compressed sequentially through the telescopic nesting of the sleeves, overcoming the limitations of traditional single-stage energy-absorbing components with short stroke and constant platform force. They exhibit multi-stage stepped stiffness and energy dissipation characteristics. The outer wall of the third sleeve 36 slides along the central hole of the first-stage interlayer isolation steel plate 26. After the first concave hexagonal honeycomb 31, the second concave hexagonal honeycomb 32, and the third concave hexagonal honeycomb 33 are all densified, the remaining thrust acts directly on the isolation steel plate through the sliding interface, thereby seamlessly transferring the force flow to the second-stage metamaterial layer device and completing the relay of the front and rear stages. Secondly, when using this equipment, as the force moves backward through the first-level interlayer isolation steel plate 26, it first pushes the first body-centered cubic lattice block 41. The inner wall of the fourth sleeve 44 at its center slides with the outer wall of the third sleeve 36, ensuring a smooth transition from the first body-centered cubic lattice block 41 to the second body-centered cubic lattice block 42. The small rods in the lattice structure bend, buckle, and tear, consuming a large amount of impact energy. The outer wall of the fourth sleeve 44 is nested within the inner wall of the fifth sleeve 45, driving the second body-centered cubic lattice block 42 into a compressed state, further extending the high-load energy absorption stroke. Subsequently, the outer wall of the fifth sleeve 45 drives the sixth sleeve 46, causing the third body-centered cubic lattice block 43 of the final stage to be compacted and deformed, forming the final safety protection barrier. The first body-centered cubic lattice block 41, the second body-centered cubic lattice block 42 and the third body-centered cubic lattice block 43 achieve progressive crushing through multi-stage sliding of the sleeves. Their gradually increasing compaction strain and platform stress form a high-load-bearing stepped energy absorption zone, effectively coping with extreme working conditions. The wear-resistant copper alloy open ring 22 provides a replaceable low-friction sliding interface for all lattice blocks, ensuring smooth movement and easy maintenance under large loads.

[0028] This invention provides an improved multi-stage replaceable metal shock absorber based on composite deformable metamaterials. It features a shock absorber assembly 1 with an elastic energy storage and reset spring 13, a front-end fixing block 16, and a piston rod 15 for accurate vibration transmission. The separation and buffer assembly 2 utilizes a shock absorber cylinder 21 and a replaceable wear-resistant copper alloy open ring 22 to construct a low-friction sliding interface. A solid metal corrugated washer 23 and a diamond-patterned rigid block 24 provide gap compensation and additional damping. The first-stage metamaterial layer assembly 3 absorbs energy through negative Poisson's ratio deformation of the first concave hexagonal honeycomb 31, the second concave hexagonal honeycomb 32, and the third concave hexagonal honeycomb 33, which is then transmitted through the first sleeve 34 and the... The second sleeve 35 and the third sleeve 36 are telescopically nested to achieve step-by-step triggering; the second-stage metamaterial layer component 4 utilizes the large plastic deformation of the first body-centered cubic lattice block 41, the second body-centered cubic lattice block 42, and the third body-centered cubic lattice block 43, and achieves high load-bearing energy dissipation through multi-level nesting of the fourth sleeve 44, the fifth sleeve 45, and the sixth sleeve 46; combined with the axial isolation of the first-stage interlayer isolation steel plate 26 and the second-stage interlayer isolation steel plate 25, a multi-step sequential energy absorption is formed, overcoming the shortcomings of traditional shock absorbers such as single energy dissipation mode, fixed stiffness, and non-replaceable vulnerable parts, significantly widening the energy absorption bandwidth, improving durability and maintenance convenience, and realizing multi-condition adaptive shock absorption.

[0029] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite deformable metamaterial multi-stage replaceable metal shock absorber, comprising a shock absorber assembly (1), a partition buffer assembly (2), a first-stage metamaterial layer assembly (3), and a second-stage metamaterial layer assembly (4), wherein the middle part of the shock absorber assembly (1) is fixedly connected to the partition buffer assembly (2), the interior of the partition buffer assembly (2) is slidably connected to the first-stage metamaterial layer assembly (3), and the interior of the partition buffer assembly (2) is slidably connected to the second-stage metamaterial layer assembly (4); Its features are: The shock absorber assembly (1) further includes a shock absorber seat (11), a rear end fixing block (12), a shock absorber spring (13), a connecting end seat (14), a piston rod (15), and a front end fixing block (16). The middle part of the shock absorber seat (11) is fixedly connected to the partition buffer assembly (2). The rear end fixing block (12) is fixedly connected to the rear end of the shock absorber seat (11). The shock absorber spring (13) is fixedly connected to the front end of the shock absorber seat (11). The connecting end seat (14) is fixedly connected to the front end of the shock absorber spring (13). The front end of the piston rod (15) is fixedly connected to the connecting end seat (14). The front end fixing block (16) is fixedly connected to the front end of the connecting end seat (14).

2. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 1, characterized in that: The separation buffer assembly (2) includes a shock-absorbing cylinder (21), a wear-resistant copper alloy open ring (22), a solid metal corrugated washer (23), a diamond-patterned rigid block (24), a secondary interlayer isolation steel plate (25), and a primary interlayer isolation steel plate (26). The shock-absorbing seat (11) is fixedly connected to the shock-absorbing cylinder (21) in the middle. The wear-resistant copper alloy open ring (22) is slidably connected inside the shock-absorbing cylinder (21). The solid metal corrugated washer (23) The diamond-patterned rigid block (24) is slidably connected to the rear end of the wear-resistant copper alloy open ring (22), the diamond-patterned rigid block (24) is slidably connected to the front end of the solid metal corrugated washer (23), the secondary interlayer isolation steel plate (25) is slidably connected to the interior of the wear-resistant copper alloy open ring (22), and the primary interlayer isolation steel plate (26) is slidably connected to the interior of the wear-resistant copper alloy open ring (22).

3. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 2, characterized in that: The first-order metamaterial layer assembly (3) includes a first concave hexagonal honeycomb (31), a second concave hexagonal honeycomb (32), a third concave hexagonal honeycomb (33), a first sleeve (34), a second sleeve (35), and a third sleeve (36). The front end of the wear-resistant copper alloy open ring (22) is slidably connected to the first concave hexagonal honeycomb (31). The second concave hexagonal honeycomb (32) is slidably connected to the inside of the wear-resistant copper alloy open ring (22). The second concave hexagonal honeycomb (32) is slidably connected to the rear end of the first concave hexagonal honeycomb (31). The third concave hexagonal honeycomb (33) is slidably connected to the wear-resistant copper alloy open ring (36). 22) Inside, the third concave hexagonal honeycomb (33) is slidably connected to the rear end of the second concave hexagonal honeycomb (32), the first sleeve (34) is fixedly connected to the middle of the first concave hexagonal honeycomb (31), the second sleeve (35) is fixedly connected to the middle of the second concave hexagonal honeycomb (32), the inner wall of the second sleeve (35) is slidably connected to the outer wall of the first sleeve (34), the third sleeve (36) is fixedly connected to the middle of the third concave hexagonal honeycomb (33), the inner wall of the third sleeve (36) is slidably connected to the outer wall of the second sleeve (35), and the outer wall of the third sleeve (36) is slidably connected to the middle of the first-level interlayer isolation steel plate (26).

4. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 3, characterized in that: The second-order metamaterial layer assembly (4) includes a first body-centered cubic lattice block (41), a second body-centered cubic lattice block (42), a third body-centered cubic lattice block (43), a fourth sleeve (44), a fifth sleeve (45), and a sixth sleeve (46). The wear-resistant copper alloy open ring (22) is slidably connected to the first body-centered cubic lattice block (41). The second body-centered cubic lattice block (42) is slidably connected to the rear end of the first body-centered cubic lattice block (41). The third body-centered cubic lattice block (43) is slidably connected to the rear end of the second body-centered cubic lattice block (42). The fourth sleeve (44) is fixedly connected to the middle of the first body-centered cubic lattice block (41). The fifth sleeve (45) is fixedly connected to the middle of the second body-centered cubic lattice block (42). The sixth sleeve (46) is fixedly connected to the middle of the third body-centered cubic lattice block (43).

5. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 4, characterized in that: The first body-centered cubic lattice block (41) is slidably connected to the rear end of the first-level interlayer isolation steel plate (26).

6. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 5, characterized in that: The second body-centered cubic lattice block (42) is slidably connected inside the wear-resistant copper alloy open ring (22).

7. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 6, characterized in that: The third body-centered cubic lattice block (43) is slidably connected inside the wear-resistant copper alloy open ring (22).

8. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 7, characterized in that: The inner wall of the fourth sleeve (44) is slidably connected to the outer wall of the third sleeve (36).

9. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 8, characterized in that: The inner wall of the fifth sleeve (45) is slidably connected to the outer wall of the fourth sleeve (44).

10. The composite deformable metamaterial multi-stage replaceable metal shock absorber according to claim 9, characterized in that: The inner wall of the sixth sleeve (46) is slidably connected to the outer wall of the fifth sleeve (45).

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