Vibration isolation structure for stress wave attenuation
By setting up staggered rectangular channels and slots in the vibration isolation body, the vibration problem caused by energy release in traditional vibration isolation structures is solved by using air reflection to dissipate stress waves, thereby improving the vibration isolation effect and impact resistance.
Patent Information
- Application Number
- CN202421214455.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Traditional vibration isolation structures cannot lock in the impact energy after it is stored, but instead release it, causing structural vibration. Insufficient stiffness design may also lead to structural failure.
A vibration isolation body is designed by setting multiple layers of staggered rectangular channels and slots on the top and inside, utilizing the low impedance characteristics of air to reflect and dissipate stress waves, thereby enhancing the vibration isolation effect.
It improves the energy dissipation of stress waves, reduces the impact of impact force on the protected object, and enhances the impact resistance.
Smart Images
Figure CN222315767U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vibration isolation and impact resistance structures, in particular to a vibration isolation structure used for stress wave attenuation. Background Art
[0002] Vibration isolation structure is a structure used to reduce or isolate the transmission of impact vibration. It is widely used in engineering, construction, machinery and other fields. The design and selection of vibration isolation structure aims to reduce the impact of impact vibration on equipment, buildings and surrounding environment, and improve comfort and safety.
[0003] At present, most traditional vibration isolation structures use springs and rubber structures to isolate vibrations. The transient and strong impact energy is first stored in the form of displacement energy to the maximum extent, and then the energy is slowly released according to the characteristics of the isolation structure itself. This impact isolation measure is designed from the perspective of stiffness. After the impact energy is stored, it cannot be locked but will be released, which will inevitably cause vibration of the structure. Moreover, if the stiffness design is insufficient, it will also lead to the destruction of the vibration isolation structure and the protected structure, causing danger. Therefore, it is necessary to design a vibration isolation structure for stress wave attenuation in order to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a vibration isolation structure for stress wave attenuation to solve the problem proposed in the above background technology that most of the current traditional vibration isolation structures are isolated by structures such as springs and rubber, and the transient and strong impact energy is first stored in the form of displacement energy to the maximum extent, and then the energy is slowly released according to the characteristics of the isolation structure itself. This impact isolation measure is designed from the perspective of stiffness. After the impact energy is stored, it cannot be locked but will be released, which is bound to cause vibration of the structure.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A vibration isolation structure for stress wave attenuation comprises a group of rectangular vibration isolation bodies; a group of vibration isolation bodies 1 in the shape of a cuboid; a plurality of first channels 101 are horizontally penetrated through the front and rear surfaces of each group of vibration isolation bodies 1, and a plurality of first channels 101 are horizontally arranged on each layer; a plurality of second channels 102 are horizontally penetrated through the left and right surfaces of the vibration isolation bodies 1, and a plurality of second channels 102 are horizontally arranged on each layer; the first channels 101 and the second channels 102 are staggered; a plurality of first through grooves 103 are opened on one side of the top of the vibration isolation bodies 1, and a plurality of first blind grooves 104 are opened on the other side of the top of the vibration isolation bodies 1.
[0007] Preferably, the first channel 101 is a rectangular channel, the second channel 102 is a rectangular channel, and the first through groove 103 is a rectangular through groove.
[0008] Compared with the prior art, the utility model has the following beneficial effects: the vibration isolation structure for stress wave attenuation dissipates more energy when the stress wave passes through the vibration isolation body by processing the top and the interior of the vibration isolation body, thereby improving the vibration isolation effect and reducing the impact of the impact force on the protected object. The specific contents are as follows:
[0009] 1. The top surface of the vibration isolation body is divided into a discontinuous surface by the first through groove and the first blind groove, which reduces the contact area with other structures. The distribution of the contact area will affect the transmission coefficient of the stress wave and the spectrum distribution of the transmitted wave. In addition, the cavity formed by the first through groove and the first blind groove contains air. Since the characteristic impedance of air is much smaller than the impedance of the solid medium (about 1%), the stress wave is only reflected but not transmitted at the contact interface between the air and the solid medium, and the stress wave is also dissipated. When the stress wave enters the interior of the vibration isolation body, the multi-layered rectangular first through grooves and the second through grooves that are staggered horizontally and vertically cause the stress wave to be transmitted, reflected and diffracted multiple times, the propagation direction is disturbed, the propagation distance is increased, and the stress wave energy is dissipated more. By processing the surface and interior of the vibration isolation body, the stress wave dissipates more energy in the process of passing through the vibration isolation body, thereby improving the vibration isolation effect and reducing the impact of the impact force on the protected object. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the main structure of the vibration isolation of the utility model;
[0011] In the figure: 1, vibration isolation body; 101, first channel; 102, second channel; 103, first through groove; 104, first blind groove. DETAILED DESCRIPTION
[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0013] See also Figure 1The utility model provides a technical solution: a vibration isolation structure for stress wave attenuation, including a group of vibration isolation bodies 1, each group of vibration isolation bodies 1 has multiple layers of first through grooves 101 horizontally penetrated through the front and back surfaces, and each layer has a plurality of first channels 101 arranged horizontally, and the left and right surfaces of the vibration isolation bodies 1 have multiple layers of second channels 102 horizontally penetrated through, and each layer has a plurality of second channels 102 arranged horizontally, the first channels 101 and the second channels 102 are staggered, and a plurality of first through grooves 103 are horizontally opened on one side of the top of the vibration isolation body 1, and a plurality of first blind grooves 104 are opened on the other side of the top of the vibration isolation body 1, so that the stress wave dissipates more energy in the process of passing through the vibration isolation body 1, thereby improving the vibration isolation effect and reducing the impact of the impact force on the protected object. In this embodiment, the first channel 101 and the second channel 102 are rectangular channels. The first through groove 103 is a rectangular through groove.
[0014] Working principle: Figure 1 As shown, the top surface of the vibration isolation body is split into a discontinuous surface by the first through groove 103 and the first blind groove 104, which reduces the contact area with other structures. The change of the contact area will affect the transmission coefficient of the stress wave and the spectrum distribution of the transmitted wave. In addition, the cavity formed by the first through groove 103 and the first blind groove 104 contains air. Since the characteristic impedance of air is much smaller than the characteristic impedance of the solid medium (about 1%), the stress wave is only reflected but not transmitted at the contact interface between the air and the solid medium, and the stress wave is also dissipated. When the stress wave enters the interior of the vibration isolation body 1, the multi-layered rectangular first through grooves 101 and the second through grooves 102 that are staggered horizontally and vertically cause the stress wave to be transmitted, reflected and diffracted multiple times, the propagation direction is disturbed, the propagation distance is increased, and the stress wave energy is dissipated more. By processing the surface and the interior of the vibration isolation body 1, the stress wave dissipates more energy in the process of passing through the vibration isolation body 1, thereby improving the vibration isolation effect and reducing the impact of the impact force on the protected object. By stacking a plurality of vibration isolation bodies 1, the attenuation capability of stress waves can be further improved and the impact resistance performance can be enhanced.
[0015] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A vibration isolation structure for stress wave attenuation, characterized in that: The invention comprises a group of vibration isolation bodies (1) in the shape of a rectangular parallelepiped; a plurality of first channels (101) are horizontally penetrated through the front and rear surfaces of each group of vibration isolation bodies (1), and a plurality of first channels (101) are horizontally arranged on each layer; a plurality of second channels (102) are horizontally penetrated through the left and right surfaces of the vibration isolation bodies (1), and a plurality of second channels (102) are horizontally arranged on each layer; the first channels (101) and the second channels (102) are arranged in an alternating manner; a plurality of first through grooves (103) are formed on one side of the top of the vibration isolation bodies (1), and a plurality of first blind grooves (104) are formed on the other side of the top of the vibration isolation bodies (1).
2. A vibration isolation structure for stress wave attenuation according to claim 1, characterized in that: The first channel (101) is a rectangular channel.
3. A vibration isolation structure for stress wave attenuation according to claim 1, characterized in that: The second channel (102) is a rectangular channel.
4. A vibration isolation structure for stress wave attenuation according to claim 1, characterized in that: The first through groove (103) is a rectangular through groove.