A biomimetic vibration reduction and isolation device

Abstract

This invention discloses a biomimetic vibration reduction and isolation device, relating to the field of vibration reduction technology. It includes multiple vertically arranged side-by-side support plates, an elastic component, and a connecting rod assembly. The upper support plate is used to bear heavy objects, and adjacent support plates can move relative to each other vertically. The elastic component can be connected to adjacent support plates, providing support to the upper support plate both diagonally and vertically. The connecting rod assembly can be connected to adjacent support plates, movably connected to the support plates, and buffering the relative movement between adjacent support plates. The biomimetic vibration reduction and isolation device provided by this invention can improve low-frequency vibration isolation performance.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology, and in particular to a biomimetic vibration reduction and isolation device. Background Technology

[0002] In engineering machinery fields, such as automotive parts manufacturing, vibration is a widespread form of mechanical motion, and its impact on personnel health and equipment safety is ubiquitous. Some vibrations are beneficial to human production activities and should be retained, while others have negative impacts on many aspects and need to be reduced or even eliminated through design.

[0003] Common vibration isolation mechanical structures are classified into three types: active, semi-active, and passive. Active and semi-active types involve adding active power components inside the mechanism, which often increases the complexity of the mechanism and results in a narrow vibration isolation bandwidth, failing to achieve effective vibration isolation over a wide range. Passive vibration isolation mechanisms are usually linear vibration isolation devices, with lower system complexity and higher safety and reliability. They often have better vibration isolation effects in the high-frequency range, but their performance in the low-frequency range is poor. Summary of the Invention

[0004] The purpose of this invention is to provide a biomimetic vibration reduction and isolation device to solve the problems existing in the prior art and improve low-frequency vibration isolation performance.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] This invention provides a biomimetic vibration damping and isolation device, comprising multiple vertically arranged side-by-side support plates, an elastic component, and a connecting rod assembly; the upper support plate is used to bear heavy objects, and two adjacent support plates can move relative to each other vertically; the elastic component can be connected to two adjacent support plates, and the elastic component can support the upper support plate in both diagonal and vertical directions; the connecting rod assembly can be connected to two adjacent support plates, and the connecting rod assembly is movably connected to the support plates, and the connecting rod assembly can buffer the relative movement between two adjacent support plates.

[0007] Preferably, the elastic component includes multiple oblique elastic supports and at least one vertical elastic support. An oblique elastic support is provided between each pair of adjacent support plates, and the oblique elastic support can provide oblique buffering between the corresponding support plates. The two ends of the vertical elastic support are fixedly connected to the upper and lower support plates respectively and are used for vertical buffering. The vertical elastic support passes through the middle support plate.

[0008] Preferably, the inclined elastic support includes a plurality of inclined springs, both ends of which are rotatably connected to the corresponding support plate; the plurality of inclined springs are symmetrically arranged about the central vertical section of the support plate.

[0009] Preferably, the vertical elastic support is provided as one, which is vertically positioned at the center of the plurality of support plates.

[0010] Preferably, the oblique spring supports on both sides of the intermediate support plate are symmetrically arranged about the center horizontal section of the intermediate support plate.

[0011] Preferably, the linkage assembly includes a support rod inclinedly disposed between two adjacent support plates, one end of the support rod being rotatably connected to one of the support plates, and the other end being slidably connected to the adjacent support plate; when the two adjacent support plates move relative to each other, the support rod can rotate relative to one of the support plates and slide relative to the other support plate.

[0012] Preferably, the support rods on both sides of the intermediate support plate are symmetrically arranged about the center horizontal section of the intermediate support plate.

[0013] Preferably, the plurality of support rods between two adjacent support plates are symmetrically arranged about the central vertical section of the support plate.

[0014] Preferably, multiple guide rods slide vertically through the multiple support plates arranged side by side in a vertical direction, and the lower end of each guide rod is fixedly connected to the support plate of the lower layer.

[0015] Preferably, the support plate and the connecting rod assembly are made of resin, nylon or acrylic.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] The biomimetic vibration reduction and isolation device provided by this invention achieves overall vertical support by setting multiple support plates that can move vertically relative to each other; it achieves diagonal and vertical coupling support between two adjacent support plates by setting elastic components, and provides support and buffering when adjacent support plates move relative to each other by cooperating with the linkage assembly, thereby improving the overall vibration isolation performance in the low frequency range, and thus meeting the vibration isolation performance in the low frequency range required in the automotive parts manufacturing field. Attached Figure Description

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is an isometric view of the assembly of the biomimetic vibration reduction and isolation device provided in Example 1;

[0020] Figure 2 This is a side view of the assembly of the biomimetic vibration reduction and isolation device provided in Embodiment 1;

[0021] Figure 3 This is a front view of the assembly of the biomimetic vibration reduction and isolation device provided in Embodiment 1;

[0022] Figure 4 This is a top view of the upper support plate provided in Embodiment 1;

[0023] Figure 5 This is a left view of the upper support plate provided in Embodiment 1;

[0024] Figure 6 This is a front view schematic diagram of the upper support plate provided in Embodiment 1;

[0025] Figure 7 This is a top view of the middle support plate provided in Embodiment 1;

[0026] Figure 8 This is a left view schematic diagram of the middle support plate provided in Embodiment 1;

[0027] Figure 9 This is a front view schematic diagram of the middle layer support plate provided in Embodiment 1;

[0028] Figure 10 This is a top view of the lower support plate provided in Embodiment 1;

[0029] Figure 11 This is a left view of the lower support plate provided in Embodiment 1;

[0030] Figure 12 This is a front view schematic diagram of the lower support plate provided in Embodiment 1;

[0031] Figure 13 This is a front view schematic diagram of the bearing housing provided in Embodiment 1;

[0032] Figure 14 This is a top view of the bearing housing provided in Embodiment 1;

[0033] Figure 15 A left view of the bearing housing provided in Embodiment 1;

[0034] Figure 16 This is a comparison diagram of the vibration isolation effects of the biomimetic vibration reduction and isolation device provided in Example 1 and the traditional linear structure vibration isolation device.

[0035] In the figure: 1-Bionic vibration reduction and isolation device; 11-Support plate; 111-Guide rod; 12-Elastic component; 121-Diagonal elastic support; 122-Vertical spring support; 123-Diagonal spring; 13-Linkage assembly; 131-Support rod; 132-Slide rail; 14-Bearing seat. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The purpose of this invention is to provide a biomimetic vibration reduction and isolation device to solve the problems existing in the prior art and improve low-frequency vibration isolation performance.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] This embodiment provides a biomimetic vibration reduction and isolation device 1. Please refer to [link / reference]. Figures 1-3 It includes multiple vertically arranged support plates 11, elastic components 12, and connecting rod assemblies 13; the upper support plate 11 is used to bear heavy objects, and two adjacent support plates 11 can move relative to each other vertically; the elastic component 12 can be connected to two adjacent support plates 11, and the elastic component 12 can support the upper support plate 11 in both diagonal and vertical directions; the connecting rod assembly 13 can be connected to two adjacent support plates 11, and the connecting rod assembly 13 is movably connected to the support plate 11, and the connecting rod assembly 13 can buffer the relative movement between two adjacent support plates 11.

[0041] By setting multiple vertically movable support plates 11, the overall vertical support is achieved; by setting elastic components 12, the diagonal and vertical coupling support between two adjacent support plates 11 is achieved, and the linkage components 13 provide support and buffer when the adjacent support plates 11 move relative to each other, thereby improving the overall vibration isolation performance in the low frequency range, and thus facilitating the improvement of broadband, heavy-load and low-complexity multi-target vibration isolation performance.

[0042] In an optional embodiment, more preferably, the elastic component 12 includes a plurality of oblique elastic supports 121 and at least one vertical elastic support 122. An oblique elastic support 121 is provided between each pair of adjacent support plates 11, and the oblique elastic supports 121 can provide oblique buffering between the corresponding support plates 11. The two ends of the vertical elastic support 122 are fixedly connected to the upper and lower support plates 11 respectively and are used for vertical buffering, and the vertical elastic support 122 passes through the middle support plate 11. The oblique elastic supports 121 and the vertical elastic supports 122 provide oblique and vertical coupling support.

[0043] In an optional embodiment, more preferably, the oblique elastic support 121 includes a plurality of oblique springs 123, both ends of which are connected by means of... Figure 13-15 The bearing housing 14 shown is rotatably connected to the corresponding support plate 11. Multiple oblique springs 123 are symmetrically arranged about the central vertical section of the support plate 11. That is, multiple oblique springs 123 in the same layer are symmetrically arranged about the central vertical section. The symmetrical structure can provide more stable buffering.

[0044] In the optional scheme of this embodiment, more preferably, a single vertical elastic support 122 is set at the center of multiple support plates 11, and the vertical elastic support 122 is set as a vertical spring at the center of the whole to provide vertical support for the uppermost support plate 11.

[0045] In the optional scheme of this embodiment, it is more preferred that the inclined springs 123 on both sides of the intermediate support plate 11 are symmetrically arranged about the central horizontal section of the intermediate support plate 11, that is, the inclined springs 124 on the upper and lower sides of the intermediate support plate 11 are symmetrically arranged to improve the overall support stability.

[0046] In an optional embodiment, more preferably, the linkage assembly 13 includes a support rod 131 inclined between two adjacent support plates 11. One end of the support rod 131 is rotatably connected to one support plate 11, and the other end is slidably connected to the adjacent support plate 11 via a slide rail 132. When the two adjacent support plates 11 move relative to each other, the support rod 131 can rotate relative to one support plate 11 and slide relative to the other support plate 11. The support rod 131 can buffer the energy dissipation of sliding with the support plate 11.

[0047] In the optional scheme of this embodiment, it is more preferred that the support rods 131 on both sides of the intermediate support plate 11 are symmetrically arranged about the center horizontal section of the intermediate support plate 11, that is, the support rods 131 on the upper and lower sides of the intermediate support plate 11 are symmetrically arranged to improve stability.

[0048] In the optional scheme of this embodiment, more preferably, the multiple support rods 131 between two adjacent support plates 11 are symmetrically arranged about the central vertical section of the support plate 11, that is, the multiple support rods 131 in the same layer are symmetrically arranged about the central vertical section. The symmetrical arrangement ensures the stability of the energy-consuming support.

[0049] In the optional scheme of this embodiment, more preferably, multiple guide rods 111 are vertically slidably passed through the multiple support plates 11 arranged side by side, and the lower end of each guide rod 111 is fixedly connected to the lower support plate 11; the multiple guide rods 111 provide vertical guidance to avoid horizontal displacement between adjacent support plates 11.

[0050] In the optional embodiments of this example, it is more preferred that the support plate 11 and the connecting rod assembly 13 are both made of lightweight materials, such as resin, nylon or acrylic, which have sufficient strength while reducing weight.

[0051] In the biomimetic vibration reduction and isolation device 1 provided in this embodiment, the support plate 11 can be configured as three, as follows: Figure 4-6 The upper plate shown, such as Figure 7-9 The middle layer plate shown and as Figure 10-12 The lower plate shown has four inclined springs 123 for each layer, two support rods 131 for each layer, and one vertical spring. Their specific distribution is as follows: Figure 1 The cross-section resembles that of a lotus leaf stalk. Two inclined springs 123 and a support rod 131 are positioned on the left side of the vertical cross-section in the middle of each layer. The inclined springs 123 and the support rod 131 have opposite inclination directions, and the support rod 131 is supported between the two inclined springs 123. Both ends of the inclined springs 123 are rotatably connected to the corresponding support plates 11 via bearing seats 14. The middle layer plate is hollowed out to facilitate rotatable connection between each support rod 131 and the inner middle of the middle layer plate. Each support rod 131 is slidably connected to the upper and lower layers via slide rails 132. The upper end of the upper inclined spring 123 is rotatably connected to the inner side of the upper layer plate, and the lower end of the upper inclined spring 123 is rotatably connected to the outer side of the middle layer plate. The upper end of the lower inclined spring 123 is rotatably connected to the outer side of the middle layer plate, and the lower end of the lower inclined spring 123 is rotatably connected to the inner side of the lower layer plate.

[0052] definition Figure 3 The X-axis is defined as left and right. The X-axis coordinates of the connection points of the oblique springs 123 on the middle layer plate are different from those of the connection points of the oblique springs 123 on the upper and lower layers plate. The oblique springs 123 and the middle layer plate form a certain angle according to the lengths of the selected oblique springs and vertical springs, such as... Figure 3 As shown, its geometric relationship is that, Where α is the angle between the oblique spring 123 and the horizontal direction, x0 is the difference between the X-direction coordinate of the center of the bearing seat 14 of the oblique spring 123 in the upper and lower layers and the X-direction coordinate of the center of the bearing seat 14 of the oblique spring 123 in the middle layer, d is the projected length of the centers of the two ends of the oblique spring 123 in the vertical direction, and l is the distance between the centers of the two ends of the oblique spring 123. The following geometric relationship holds: Where H is the total vertical height of the vibration isolation mechanism. The thickness of the upper layer plate. The thickness of the lower layer plate. The thickness represents the middle layer, p represents the plate, u represents the upper layer, d represents the lower layer, and c represents the center layer. The distance between the center of one end of the inclined spring 123 and the endpoint in the vertical projection is denoted as . s represents the distance between the center of the other end of the inclined spring 123 and the endpoint in the vertical projection. s represents the spring, sp represents the projection of the spring, 1 represents one end, and 2 represents the other end.

[0053] When the upper plate bears a certain mass of weight (the object to be isolated from vibration), the structure contracts downward to the initial equilibrium position. Then, when the lower plate is subjected to vertical excitation, the entire structure moves vertically along the Y direction under the action of the guide rod 111. The vertical spring provides vertical support. When subjected to vertical downward pressure, it generates compressive displacement deformation to reduce the downward gravitational acceleration. When subjected to force / displacement / acceleration transmitted in the downward direction, it generates tensile deformation to reduce the upward movement tendency.

[0054] Both the support plate 11 and the support rod 131 are made of lightweight materials, each weighing 0.195 kg; the upper plate can bear a weight of 1.95 kg; the four vertical guide rods 111 have a diameter of 10 mm, their centers are 15 mm from the edge of the support plate 11, and their lengths are all 110 mm; the support rods 131 are all 60 mm long, and their ends have a diameter of 6 mm; the slide rails 132 on the lower side of the upper plate and the upper side of the lower plate are 3 mm wide and 40 mm long; the vertical springs have a center-to-center distance of 105 mm, and the oblique springs 123 have a center-to-center distance of 62 mm; the upper plate is 5 mm thick, the middle plate is 10 mm thick, and the lower plate is 5 mm thick; please refer to [link / reference]. Figure 16Compared with the vibration isolation effect of the traditional linear vibration isolation device, the traditional linear vibration isolation device only retains the upper and lower plates, and the size of the upper and lower plates remains unchanged. In addition, the original guide rod 111 is replaced with a vertical spring with a length of 110mm. The initial vibration isolation frequency of the bionic vibration isolation device 1 provided in this embodiment is 7.05HZ, which is 55.7% lower than the initial vibration isolation frequency of 15.92HZ of the traditional linear vibration isolation device. It can be seen that the vibration isolation performance of the bionic vibration isolation device 1 provided in this embodiment is better in the low frequency range.

[0055] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A biomimetic vibration damping and isolation device, characterized in that: include: Multiple support plates (11) are arranged vertically side by side. The upper support plate (11) is used to support heavy objects, and two adjacent support plates (11) can move relative to each other vertically. The elastic component (12) includes multiple inclined elastic supports (121) and at least one vertical elastic support (122). An inclined elastic support (121) is provided between each pair of adjacent support plates (11). The inclined elastic support (121) can provide inclined buffering between the corresponding support plates (11). Each inclined elastic support (121) includes multiple inclined springs (123), both ends of which are rotatably connected to the corresponding support plate (11). The multiple inclined springs (123) are symmetrically arranged about the central vertical section of the support plate (11), and the upper inclined springs... The upper end of the inclined spring (123) is rotatably connected to the inner side of the upper support plate (11), the lower end of the upper inclined spring (123) is rotatably connected to the outer side of the middle support plate (11), the upper end of the lower inclined spring (123) is rotatably connected to the outer side of the middle support plate (11), and the lower end of the lower inclined spring (123) is rotatably connected to the inner side of the lower support plate (11); the two ends of the vertical elastic support (122) are respectively fixedly connected to the upper and lower support plates (11) and used for vertical buffering, and the vertical elastic support (122) passes through the middle support plate (11); and The linkage assembly (13) includes a support rod (131) inclinedly disposed between two adjacent support plates (11). One end of the support rod (131) is rotatably connected to the inner side of the middle support plate (11), and the other end is slidably connected to the adjacent support plate (11). When the two adjacent support plates (11) move relative to each other, the support rod (131) can rotate relative to one support plate (11) and slide relative to the other support plate (11). The linkage assembly (13) can buffer the relative movement between the two adjacent support plates (11). The vertical elastic support (122) is set as one, and is vertically arranged at the center of the plurality of support plates (11); the oblique springs (123) on both sides of the middle support plate (11) are symmetrically arranged about the center horizontal section of the middle support plate (11); the support rods (131) on both sides of the middle support plate (11) are symmetrically arranged about the center horizontal section of the middle support plate (11); the plurality of support rods (131) between two adjacent support plates (11) are symmetrically arranged about the center vertical section of the support plate (11); the support rods (131) between two adjacent support plates (11) and located on the same side of the center vertical section of the support plate (11) are inclined in the opposite direction to the oblique springs (123).

2. The biomimetic vibration damping and isolation device according to claim 1, characterized in that: Multiple guide rods (111) slide vertically through the multiple support plates (11) arranged side by side in a vertical direction, and the lower end of each guide rod (111) is fixedly connected to the support plate (11) of the lower layer.

3. The biomimetic vibration damping and isolation device according to claim 1, characterized in that: The support plate (11) and the connecting rod assembly (13) are made of resin, nylon or acrylic.

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