Shock absorption structure based on shape memory material

Abstract

The utility model discloses a damping structure based on a shape memory material and belongs to the technical field of engineering structure damping. The upper end of the bottom plate is connected with the top plate through a plurality of telescopic mechanisms, the telescopic mechanisms are arranged in an array mode, each telescopic mechanism is provided with a plurality of shape memory blocks, each shape memory block is of a hexahedron structure, a cavity is formed in each shape memory block, and the shape memory blocks are arranged in the cavities. The center of each face of each shape memory block is provided with a through hole communicated with the cavity, each shape memory block is arranged on the corresponding telescopic mechanism in a sliding and sleeving mode through the two corresponding through holes, the corresponding faces of every two adjacent shape memory blocks are tightly attached to each other, and the corresponding through holes are communicated. Through the phase change restoring force of the shape memory block, the air damping, the elastic buffering of the spring and the anti-skid buffering of the rubber pad, multi-mechanism cooperative damping and the synergistic effect of all parts are achieved, the damping effect is remarkably improved, and the damping device is suitable for various vibration environments and has wide applicability.

Description

Technical Field

[0001] This utility model belongs to the field of vibration reduction technology for engineering structures, specifically a vibration reduction structure based on shape memory materials. Background Technology

[0002] Traditional damping structures mostly rely on metal springs or hydraulic damping to achieve damping function. However, these traditional damping methods have a series of problems. Although metal springs have a certain elastic deformation capacity, they are usually heavy and not convenient for use in applications requiring lightweight design. In addition, metal springs are prone to irreversible deformation after long-term stress, which leads to a gradual decline in damping performance. Hydraulic damping is prone to corrosion, especially in humid or corrosive environments, where the service life of hydraulic dampers will be significantly shortened.

[0003] In recent years, polymeric shape memory materials (such as polyurethane-based SMPs) have attracted much attention due to their unique properties. These materials possess advantages such as lightweight, strong deformation recovery, and flexible triggering conditions (such as thermal and optical responses), showing great application potential in the field of vibration damping. However, current technologies lack design schemes that efficiently combine polymeric shape memory materials with vibration damping structures. Traditional vibration damping structures often fail to fully utilize the advantages of shape memory materials, resulting in limited vibration damping effects. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides a shock-absorbing structure based on shape memory material.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a shock-absorbing structure based on shape memory material, comprising a base plate, a top plate, multiple telescopic mechanisms, and multiple shape memory blocks;

[0006] The upper end of the base plate is connected to the top plate through multiple telescopic mechanisms. The multiple telescopic mechanisms are arranged in an array, and each telescopic mechanism is provided with multiple shape memory blocks. Each shape memory block is a hexahedral structure and has a cavity inside. Each face of each shape memory block has a through hole communicating with the cavity. Each shape memory block is slidably fitted onto the corresponding telescopic mechanism through the corresponding two through holes. The corresponding faces of each adjacent shape memory block fit tightly against each other, and the corresponding through holes are connected.

[0007] Each of the telescopic mechanisms includes a hollow tube, a telescopic rod, and a spring;

[0008] One end of the hollow tube is fixedly connected to the upper surface of the base plate, and the other end of the hollow tube is slidably connected to one end of the telescopic rod. The spring is set inside the hollow tube, with one end of the spring fixedly connected to the telescopic rod and the other end of the spring fixedly connected to the base plate. The other end of the telescopic rod is fixedly connected to the lower surface of the top plate. Multiple shape memory blocks are slidably provided on both the hollow tube and the telescopic rod.

[0009] Both the lower end face of the base plate and the upper end face of the top plate are provided with rubber pads, and the surface of the rubber pads is provided with anti-slip embossed texture.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. Shape memory block vibration reduction: Shape memory blocks are made of shape memory materials. When affected by stress and temperature changes, the material undergoes a phase change to generate restoring force, resisting the deformation caused by vibration and consuming vibration energy. The corresponding surfaces of adjacent shape memory blocks are tightly fitted and the through holes are connected. When compressed, the air flows in the cavity and through holes, generating resistance and further consuming vibration energy.

[0012] 2. Spring buffering and shock absorption: The spring is set inside the hollow tube. When the top plate is displaced by vibration, the telescopic rod compresses or stretches the spring. The spring stores elastic potential energy. When the external force decreases or disappears, it releases the potential energy, so that the telescopic rod returns to its original position. During the elastic deformation and recovery process, it absorbs and releases energy, which plays a role in buffering and shock absorption.

[0013] 3. Rubber pad cushioning and anti-slip: Rubber pads are provided on the lower end of the base plate and the upper end of the top plate. The rubber pads are elastic and can cushion external impacts and reduce vibration transmission. The surface of the rubber pads has anti-slip ridges to increase friction with the surface of the contacting object, prevent the shock absorption structure from sliding or shifting during vibration, and ensure stability.

[0014] 4. Excellent synergistic vibration reduction effect: Through the restoring force of shape memory blocks, air damping, elastic deformation of springs, and buffering effect of rubber pads, vibration energy is consumed and dispersed from multiple aspects in a synergistic manner, effectively reducing the impact of vibration on the structure and connected equipment, achieving a good vibration reduction effect, and adapting to various vibration environments of different types and intensities.

[0015] In summary, this invention achieves multi-mechanism synergistic vibration reduction through the phase change restoring force of the shape memory block, air damping, elastic buffering of the spring, and anti-slip buffering of the rubber pad. The synergistic effect of each component significantly improves the vibration reduction effect, making it suitable for various vibration environments and having wide applicability. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the telescopic mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the shape memory block of this utility model. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] This embodiment describes a shock-absorbing structure based on shape memory material, including a base plate 1, a top plate 4, multiple telescopic mechanisms and multiple shape memory blocks 5;

[0021] The upper end of the base plate 1 is connected to the top plate 4 through multiple telescopic mechanisms. The multiple telescopic mechanisms are arranged in an array, and each telescopic mechanism is provided with multiple shape memory blocks 5. Each shape memory block 5 is a hexahedral structure, and each shape memory block 5 is provided with a cavity 6. Each face of each shape memory block 5 is provided with a through hole 7 communicating with the cavity 6. Each shape memory block 5 is slidably fitted onto the corresponding telescopic mechanism through the corresponding two through holes 7. The corresponding faces of each adjacent shape memory block 5 are tightly fitted together, and the corresponding through holes 7 are connected.

[0022] Each of the telescopic mechanisms includes a hollow tube 2, a telescopic rod 3, and a spring 9;

[0023] One end of the hollow tube 2 is fixedly connected to the upper surface of the base plate 1, and the other end of the hollow tube 2 is slidably connected to one end of the telescopic rod 3. The spring 9 is set inside the hollow tube 2, one end of the spring 9 is fixedly connected to the telescopic rod 3, and the other end of the spring 9 is fixedly connected to the base plate 1. The other end of the telescopic rod 3 is fixedly connected to the lower surface of the top plate 4. Multiple shape memory blocks 5 are slidably provided on both the hollow tube 2 and the telescopic rod 3.

[0024] Both the lower end face of the base plate 1 and the upper end face of the top plate 4 are provided with rubber pads 8, and the surface of the rubber pads 8 is provided with anti-slip embossed texture.

[0025] When using this utility model, the device is installed at the preset position where vibration damping is required. When the vibration damping structure is vibrated, the top plate 4 will be displaced relative to the bottom plate 1, which will drive the telescopic mechanism to move. The telescopic rod 3 in the telescopic mechanism slides in the hollow tube 2, and the multiple shape memory blocks 5 mounted on the telescopic mechanism will also slide relative to each other. The shape memory blocks 5 are made of shape memory material. During the vibration process, the shape memory blocks 5 will be affected by stress and possible temperature changes. When the shape memory blocks 5 are subjected to stress, a phase change will occur inside the material, generating a restoring force. This restoring force will resist the deformation caused by vibration and try to restore the shape memory blocks to their original shape, thereby consuming some vibration energy. For example, when subjected to a large impact, the shape memory blocks will be compressed to a certain extent, and then gradually recover by their own restoring force. In this process, some vibration energy is absorbed. Since the corresponding surfaces of adjacent shape memory blocks 5 are tightly attached to each other and the corresponding through holes 7 are connected, when the shape memory blocks 5 are compressed, air will flow in the cavity 6 and through holes 7 of the adjacent shape memory blocks 5. When the air flows, it will generate resistance. This resistance is like a damping force, which can further consume vibration energy.

[0026] Spring 9 is installed inside hollow tube 2, with one end fixedly connected to telescopic rod 3 and the other end fixedly connected to base plate 1. When top plate 4 is vibrated and displaced, telescopic rod 3 will compress or stretch spring 9. Spring 9 is elastic and will store elastic potential energy during compression or stretching. When the external force of vibration decreases or disappears, spring 9 will release the stored elastic potential energy and push or pull telescopic rod 3 back to its original position. During this elastic deformation and recovery process, spring 9 will absorb and release energy, thereby playing a role in buffering and shock absorption.

[0027] Both the lower end face of the base plate 1 and the upper end face of the top plate 4 are provided with rubber pads 8, and the surface of the rubber pads 8 is provided with anti-slip ridges. The rubber pads 8 themselves have a certain degree of elasticity. When the shock-absorbing structure comes into contact with external objects, the rubber pads can buffer the impact force of the external environment and reduce the transmission of vibration. The anti-slip ridges on the surface of the rubber pads 8 can increase the friction with the surface of the contacting object, prevent the shock-absorbing structure from sliding or shifting during vibration, ensure the stability of the shock-absorbing structure, and enable it to better perform its shock-absorbing function.

[0028] This vibration damping structure utilizes the restoring force of the shape memory block 5, air damping, the elastic deformation of the spring 9, and the buffering effect of the rubber pad 8 to work together from multiple aspects to consume and disperse vibration energy, thereby effectively reducing the impact of vibration on the entire structure and connected equipment, achieving a good vibration damping effect. Different components treat vibration at different degrees and stages, enabling the vibration damping structure to adapt to various vibration environments of different types and intensities.

[0029] 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, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vibration damping structure based on shape memory material, characterized in that: It includes a base plate (1), a top plate (4), multiple telescopic mechanisms and multiple shape memory blocks (5); The upper end of the base plate (1) is connected to the top plate (4) through multiple telescopic mechanisms. The multiple telescopic mechanisms are arranged in an array. Each telescopic mechanism is provided with multiple shape memory blocks (5). Each shape memory block (5) is a hexahedral structure and each shape memory block (5) is provided with a cavity (6). Each face of each shape memory block (5) is provided with a through hole (7) communicating with the cavity (6). Each shape memory block (5) is slidably fitted on the corresponding telescopic mechanism through the corresponding two through holes (7). The corresponding faces of each adjacent shape memory block (5) are tightly fitted to each other, and the corresponding through holes (7) are connected.

2. The shock-absorbing structure based on shape memory material according to claim 1, characterized in that: Each of the telescopic mechanisms includes a hollow tube (2), a telescopic rod (3), and a spring (9); One end of the hollow tube (2) is fixedly connected to the upper surface of the base plate (1), and the other end of the hollow tube (2) is slidably connected to one end of the telescopic rod (3). The spring (9) is set inside the hollow tube (2), one end of the spring (9) is fixedly connected to the telescopic rod (3), and the other end of the spring (9) is fixedly connected to the base plate (1). The other end of the telescopic rod (3) is fixedly connected to the lower surface of the top plate (4). Multiple shape memory blocks (5) are slidably provided on both the hollow tube (2) and the telescopic rod (3).

3. The shock-absorbing structure based on shape memory material according to claim 1, characterized in that: The bottom surface of the base plate (1) and the top surface of the top plate (4) are both provided with rubber pads (8), and the surface of the rubber pads (8) is provided with anti-slip ridges.

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