Low-frequency broadband multi-directional isolation and multi-dimensional load enhancement integrated superstructure and device

Abstract

The application discloses a kind of low-frequency broadband multidirectional vibration isolation and multi-dimensional load bearing enhancement integrated superstructure and device, including load platform, multiple main force components and multiple groups of superstructure components;The first end of main force component is connected with load platform along the interval of ring direction, and the second end extends outward radially, the length direction of each main force component has an angle between the normal line direction of load platform;Three gable column regions are formed between adjacent two main force components, and each group of superstructure components is located in a three gable column region;Superstructure component includes two or more resonance modulation modules, from outside to inside in three gable column region, the length of each resonance modulation module in the same superstructure component decreases in a predetermined manner.The application is applied to the field of new material and new structure of vibration and noise control, not only multidirectional, low-frequency, broadband vibration isolation effect can be realized under multi-dimensional, high bearing, small size, but also easy to process, can be adjusted according to actual control demand.

Description

Technical Field

[0001] This invention belongs to the field of new materials and structures for vibration and noise control, specifically a low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure and device. Background Technology

[0002] Vibration problems are widespread in human production and daily life. However, the vibration problems are even more prominent in modern high-end equipment such as airplanes, high-speed trains, ships, and precision machine tools. Vibration problems have seriously affected the key core performance indicators of modern high-end equipment, such as ride comfort and manufacturing precision.

[0003] Vibration reduction and isolation technology is an important means of controlling equipment vibration. In engineering practice, traditional vibration reduction and isolation technologies mainly include damping vibration reduction technology (such as constrained damping materials), vibration absorption technology (such as active vibration absorbers), and vibration isolation technology (such as floating raft vibration isolation systems). These traditional vibration reduction and isolation technologies have many advantages, but also have many shortcomings and limitations. For example, traditional damping vibration reduction technology can achieve good vibration reduction and isolation effects at mid-to-high frequencies, but its low-frequency performance is poor; traditional vibration absorption technology can operate at very low frequencies, but its operating bandwidth is very narrow; traditional vibration isolation technology can achieve high load-bearing capacity, excellent low-frequency performance, or small size individually, but it cannot simultaneously achieve low-frequency performance under high load / small size conditions; at the same time, these traditional vibration reduction and isolation technologies are usually designed for unidirectional vibration control, making it difficult to achieve multi-directional vibration control simultaneously. Therefore, traditional vibration reduction and isolation technologies can no longer meet the increasingly diversified vibration reduction and isolation needs of equipment. How to achieve low-frequency broadband multi-directional vibration reduction and isolation control of equipment under high load / small size conditions is an engineering and scientific research problem that urgently needs to be solved in the field of vibration and noise control.

[0004] In recent years, the technology of mechanical / acoustic metamaterials has developed rapidly. Acoustic metamaterials are novel composite materials / structures composed of specially designed microstructural units, possessing a series of extraordinary elastic wave modulation characteristics such as low-frequency elastic wave bandgap, negative density, negative modulus, and negative refraction. Current research on acoustic metamaterials technology shows that by utilizing the extraordinary elastic wave modulation capability of metamaterial structures, it is possible to achieve "small-size control of low-frequency large wavelengths," providing a new approach to solving the problem of low-frequency vibration reduction and isolation within small dimensions. Summary of the Invention

[0005] To address the problem in existing technologies that it is difficult to achieve efficient control of low-frequency broadband multi-directional vibration reduction and isolation of equipment under high load and small size, this invention draws on the concept of acoustic metamaterials and combines it with the principle of spider web to design a cross-integrated and collaborative superstructure and device that integrates low-frequency broadband multi-directional vibration reduction and isolation with multi-dimensional load-bearing enhancement. This device can achieve low-frequency broadband multi-directional vibration reduction and isolation effects under high load and small size.

[0006] To achieve the above objectives, the present invention provides a low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure, including a load platform, multiple main load-bearing components and multiple sets of superstructure components;

[0007] The first end of each of the main load-bearing components is connected to the load platform at circumferential intervals, and the second end extends outward radially. The length direction of each of the main load-bearing components has an angle θ with the positive vertical direction of the load platform.

[0008] A triangular prism region is formed between two adjacent main load-bearing components, and each group of superstructure components is located within one of the triangular prism regions.

[0009] The metastructure component includes two or more resonant modulation modules. Within the triangular prism region, from the outside to the inside, the length of each resonant modulation module in the same metastructure component decreases in a predetermined manner.

[0010] In one embodiment, the main load-bearing component is a T-beam, I-beam, C-beam, or hollow tubular structure; or

[0011] The main load-bearing component is a beam with localized reinforcing ribs and / or localized perforations; or

[0012] The main load-bearing component is a composite structure.

[0013] In one embodiment, the load platform is a solid column or a hollow column; or

[0014] The load platform is a beam assembly, a rod assembly, or a plate assembly; or

[0015] The load platform is a combination of beams, rods, and plates.

[0016] In one embodiment, the resonant modulation module is structured as a zigzag resonant element;

[0017] The tortuous resonant element is a bent beam structure, a curved beam structure, or a straight beam structure; or

[0018] The tortuous resonant element is a composite beam structure consisting of at least two types of beams, namely straight beams, bent beams, and curved beams.

[0019] In one embodiment, the zigzag resonant element has a local first cavity, and the first cavity contains a plurality of microparticles that can move within the first cavity.

[0020] In one embodiment, the resonant modulation module is structured as a variable stiffness combined resonant element;

[0021] The variable stiffness combined resonant element includes at least two weak stiffness elastic parts and at least one high stiffness mass part.

[0022] In one embodiment, the weak stiffness elastic part and / or the high stiffness mass part are provided with a partial second cavity, and the second cavity is provided with a plurality of microparticles that can move within the second cavity.

[0023] In one embodiment, within the same triangular prism region, both ends of each resonant modulation module are rigidly connected to the two adjacent main load-bearing components; or

[0024] Within the same triangular prism region, each of the resonant modulation modules has a rotational and / or sliding fit between its two ends and the two adjacent main load-bearing components, so as to change the modulation direction and / or resonant frequency of the resonant modulation module by rotation and / or sliding.

[0025] In one embodiment, within the same miter prism region, from the outside in, the lengths of each of the resonant modulation modules in the same metastructure component decrease proportionally, in segments, or cyclically.

[0026] To achieve the above objectives, the present invention also provides a low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure device, comprising two or more of the above-mentioned integrated superstructures;

[0027] The load platforms of two adjacent integrated superstructures are connected; and / or

[0028] The second ends of the main load-bearing components of two adjacent integrated superstructures are connected accordingly.

[0029] Compared with the prior art, the present invention has the following beneficial technical effects:

[0030] 1. This invention can change the rotation angle and position of the orientation adjustment device based on changes in application scenarios and objectives, adjust the stiffness and mass layout of the resonant modulation module, and the length change gradient of the resonant modulation module. It also coordinates the design of the lattice, configuration and coupling relationship of the main load-bearing component, multiple sets of superstructure components and load platform, so that the resonant frequency of each resonant modulation module is extended by frequency misalignment, the integrated superstructure control direction gradient is coordinated, the vibration suppression frequency band is widened in a distributed manner, and the load-bearing dimension coupling is enhanced.

[0031] 2. This invention can achieve low-frequency broadband high load-bearing vibration reduction and isolation control in multiple dimensions, including tension, compression, torsion, and shear, and in multiple directions, including the z, x, and y directions. It can also quickly adjust and adapt the resonant frequency of the resonant modulation module by changing the rotation angle and position of the orientation adjustment device.

[0032] 3. This invention has the advantages of low-frequency ultra-wideband, high rigidity, high strength, compact spatial structure, and wide, easy-to-adjust, and flexible design space. It can be applied to vibration reduction and isolation control of modern high-end equipment such as aircraft, high-speed rail, ships, and precision machine tools. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the first embodiment of the integrated superstructure in Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating an implementation of the metastructure component in Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the second embodiment of the integrated superstructure in Embodiment 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the third embodiment of the integrated superstructure in Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram showing the connection between the integrated superstructure and the base in Embodiment 1 of the present invention;

[0039] Figure 6 This is a schematic diagram of the first embodiment of the tortuous resonant element in Embodiment 1 of the present invention;

[0040] Figure 7 This is a schematic diagram of the second embodiment of the tortuous resonant element in Embodiment 1 of the present invention;

[0041] Figure 8 This is a schematic diagram of the third implementation of the tortuous resonant element in Embodiment 1 of the present invention;

[0042] Figure 9 This is a schematic diagram of the fourth embodiment of the tortuous resonant element in Embodiment 1 of the present invention;

[0043] Figure 10 This is a schematic diagram of the fifth implementation of the tortuous resonant element in Embodiment 1 of the present invention;

[0044] Figure 11 This is a schematic diagram of the first embodiment of the variable stiffness combined resonant element in Embodiment 1 of the present invention;

[0045] Figure 12 This is a schematic diagram of the second implementation of the variable stiffness combined resonant element in Embodiment 1 of the present invention;

[0046] Figure 13 This is a schematic diagram of the third implementation of the variable stiffness combined resonant element in Embodiment 1 of the present invention;

[0047] Figure 14 This is a schematic diagram of the first embodiment of the orientation adjustment device in Embodiment 1 of the present invention;

[0048] Figure 15 This is a schematic diagram of a second embodiment of the orientation adjustment device in Embodiment 1 of the present invention;

[0049] Figure 16 This is a schematic diagram of the first embodiment of the main load-bearing component in Embodiment 1 of the present invention;

[0050] Figure 17 This is a schematic diagram of a second embodiment of the main load-bearing component in Embodiment 1 of the present invention;

[0051] Figure 18 This is a schematic diagram of the third embodiment of the main load-bearing component in Embodiment 1 of the present invention;

[0052] Figure 19 This is a schematic diagram of the first embodiment of the load platform in Embodiment 1 of the present invention;

[0053] Figure 20 This is a schematic diagram of a second embodiment of the load platform in Embodiment 1 of the present invention;

[0054] Figure 21 This is a schematic diagram of the third embodiment of the load platform in Embodiment 1 of the present invention;

[0055] Figure 22 This is a schematic diagram of the fourth embodiment of the load platform in Embodiment 1 of the present invention;

[0056] Figure 23 This is a schematic diagram of the fifth embodiment of the load platform in Embodiment 1 of the present invention;

[0057] Figure 24 This is a schematic diagram of the first embodiment of the integrated superstructure device in Embodiment 2 of the present invention;

[0058] Figure 25 This is a schematic diagram of the second embodiment of the integrated superstructure device in Embodiment 2 of the present invention.

[0059] Reference numerals: 1-Main load-bearing component, 2-Superstructure component, 3-Load platform, 4-Resonance modulation module, 41-Zigzag resonant element, 42-Variable stiffness combined resonant element, 42a-Weak stiffness elastic part, 42b-High stiffness mass part, 5-Foundation part, 6-Orientation adjustment device, 7-Integrated superstructure, 8-Integrated superstructure device, 9-Microparticle.

[0060] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0062] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0063] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0066] Example 1

[0067] This embodiment discloses a low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure (hereinafter referred to as "integrated superstructure 7"), which can be applied to vibration reduction and isolation control of modern high-end equipment such as aircraft, high-speed rail, ships, and precision machine tools.

[0068] refer to Figures 1 to 4 The integrated superstructure 7 mainly includes a load platform 3, multiple main load-bearing components 1, and multiple sets of superstructure components 2, all mounted on a foundation 5 such as a foundation, carriage floor, or ship deck. Specifically:

[0069] The load platform 3 is spaced a certain distance from the base 5 in a direction perpendicular to the ground plane. For example, the distance between the load platform 3 and the base 5 is 50mm, 215mm or 790mm.

[0070] The first end of each main load-bearing component 1 is connected to the load platform 3 at circumferential intervals, and the second end extends radially outward and downward and is fixedly connected to the base part 5. The length direction of each main load-bearing component 1 has an angle θ with the perpendicular direction of the load platform 3, such as 60 degrees, 45 degrees or 90 degrees. That is, the load platform 3 and each main load-bearing component 1 form a frustum-like support structure on the base part 5.

[0071] Two adjacent main load-bearing components 1 and the foundation 5 form a triangular area. Since the upper and lower ends of the main load-bearing components 1 have a certain thickness, a triangular prism area can be formed by stretching along the vertical direction of the triangular area. A set of superstructure components 2 is provided in each triangular prism area.

[0072] The superstructure component 2 includes two or more resonant modulation modules 4. The two ends of each resonant modulation module 4 are adjacent to two adjacent main load-bearing components 1, and the length of each resonant modulation module 4 in the same superstructure component 2 decreases in a predetermined manner from the outside to the inside.

[0073] In practical applications, multiple integrated superstructures 7 can be arranged in a row on the base 5, that is... Figure 5 As shown.

[0074] In this embodiment, the resonant modulation module 4 mainly has two implementation methods, specifically:

[0075] In the first embodiment, a zigzag resonant element 41 is used as the structural form of the resonant modulation module 4. The zigzag resonant element 41 is a bent beam structure, a curved beam structure, or a straight beam structure. Alternatively, the zigzag resonant element 41 can be set as a combined beam structure of at least two of the following: a straight beam, a bent beam, or a curved beam.

[0076] For example:

[0077] refer to Figure 6 , that is, the tortuous resonant element 41 of the bent beam structure;

[0078] refer to Figure 7 This is the tortuous resonant element 41, which is a combination of straight beams and curved beams, wherein the straight beams and curved beams are connected alternately, and the bending direction of each curved beam is the same.

[0079] refer to Figure 8 This is the tortuous resonant element 41, which is a combination of straight beams and curved beams, wherein the straight beams and curved beams are connected alternately, and the bending directions of each curved beam are not the same.

[0080] refer to Figure 9 That is, the tortuous resonant element 41 is a combination of straight beams, bent beams and curved beams, wherein the straight beams, curved beams and bent beams are distributed alternately, and the bending direction of each curved beam and the bending direction of the bent beam are the same.

[0081] refer to Figure 10 That is, the tortuous resonant element 41 is a combination of straight beams, bent beams and curved beams, wherein the straight beams, curved beams and bent beams are distributed alternately, and the bending direction of each curved beam and the bending direction of the bent beam are not the same.

[0082] It is worth noting that the zigzag resonant element 41 is not limited to Figures 6 to 10 The structural form shown in the example can also be a combination of other structures.

[0083] In the second embodiment, a variable stiffness combined resonant element 42 is used as the structural form of the resonant modulation module 4. The variable stiffness combined resonant element 42 includes at least two weak stiffness elastic parts 42a and at least one high stiffness mass part 42b. The weak stiffness elastic parts 42a can be configured as a bent beam structure, a curved beam structure, or a straight beam structure, or as a combined beam structure of at least two of the following: straight beam, bent beam, and curved beam. The high stiffness mass part 42b can be configured as a bent beam structure, a curved beam structure, or a straight beam structure, or as a combined beam structure of at least two of the following: straight beam, bent beam, and curved beam. The high stiffness mass part 42b can also be configured as a cylinder, prism, or other similar structure.

[0084] For example:

[0085] refer to Figure 11The variable stiffness combined resonant element 42 includes five weak stiffness elastic parts 42a and four high stiffness mass parts 42b. The weak stiffness elastic parts 42a are straight beam structures, and the high stiffness mass parts 42b are quadrangular prism structures. The five weak stiffness elastic parts 42a and the four high stiffness mass parts 42b are connected in a staggered manner to form a linear configuration of the variable stiffness combined resonant element 42.

[0086] refer to Figure 12 The variable stiffness combined resonant element 42 includes two weak stiffness elastic parts 42a and one high stiffness mass part 42b. Both the weak stiffness elastic parts 42a and the high stiffness mass part 42b are curved beam structures. The two weak stiffness elastic parts 42a are connected to the two ends of the high stiffness mass part 42b to form an arc configuration of the variable stiffness combined resonant element 42.

[0087] refer to Figure 13 The variable stiffness combined resonant element 42 includes two weak stiffness elastic parts 42a and one high stiffness mass part 42b. The weak stiffness elastic parts 42a are bent beam structures, and the high stiffness mass part 42b is a triangular prism structure. The two weak stiffness elastic parts 42a are connected to the two ends of the high stiffness mass part 42b to form a variable stiffness combined resonant element 42 with a bent line configuration.

[0088] It is worth noting that the variable stiffness combined resonant element 42 is not limited to Figures 11 to 13 The structural form shown in the example can also be achieved through combinations of other structures. Furthermore, the difference in stiffness between the weak-stiffness elastic part 42a and the high-stiffness mass part 42b can be reflected in the materials and configuration. For example, when the weak-stiffness elastic part 42a and the high-stiffness mass part 42b are made of the same material, the thickness and width of the high-stiffness mass part 42b are made larger than those of the weak-stiffness elastic part 42a during the design process. Alternatively, the high-stiffness mass part 42b can be made of a high-stiffness material, and the thickness of the weak-stiffness elastic part 42a can be made of a low-stiffness material; in this case, the thickness and width of the high-stiffness mass part 42b and the weak-stiffness elastic part 42a can be set to be the same.

[0089] In practical applications, each resonant modulation module 4 in the same metastructure component 2 can adopt either the first implementation method or the second implementation method described above. Simultaneously, in the same metastructure component 2, some resonant modulation modules 4 can adopt the first implementation method, while others can adopt the second implementation method.

[0090] In a preferred embodiment, when the resonant modulation module 4 adopts the first embodiment, a local first cavity may be provided within the tortuous resonant element 41, and a plurality of microparticles 9 may be provided within the first cavity, and the microparticles 9 may move within the first cavity. When the resonant modulation module 4 adopts the second embodiment, a local second cavity may be provided within the weak stiffness elastic part 42a and / or the high stiffness mass part 42b, and a plurality of microparticles 9 may be provided within the second cavity, and the microparticles 9 may move within the second cavity, i.e. Figure 2 As shown, by setting microparticles 9 on the resonant modulation module 4, the damping near the resonant frequency of the resonant modulation module 4 can be locally amplified, exerting a super-strong damping effect, significantly enhancing the vibration suppression energy of the structure, and broadening the vibration suppression bandwidth of the structure.

[0091] In this embodiment, the connection between the resonant modulation module 4 and the main load-bearing component 1 has two implementation methods, specifically:

[0092] In the first implementation, both ends of each resonant modulation module 4 are rigidly connected to the two adjacent main load-bearing components 1, for example, by welding, bolt fixing, etc.

[0093] In the second embodiment, each resonant modulation module 4 has a rotational and / or sliding fit between its two ends and the two adjacent main load-bearing components 1, so as to change the control direction and / or resonant frequency of the resonant modulation module 4 by rotation and / or sliding.

[0094] For example:

[0095] refer to Figure 14 In the first embodiment of the second connection method described above, the two ends of the resonant modulation module 4 are rotatably connected to the two adjacent main load-bearing components 1 through a clearance fit or bearing connection, and the connection point is located between the upper and lower ends of the main load-bearing components 1. By rotating the resonant modulation module 4, the control direction and / or resonant frequency of the resonant modulation module 4 can be changed. Preferably, a gear can be fixedly sleeved on the resonant modulation module 4 as an orientation adjustment device 6. By rotating the orientation adjustment device 6, the control direction and / or resonant frequency of the resonant modulation module 4 can be changed.

[0096] refer to Figure 15In the second embodiment of the above-described connection method, the two ends of the resonant modulation module 4 are rotatably and / or slidably connected to the two adjacent main load-bearing components 1 via the orientation adjustment device 6. In this embodiment, the orientation adjustment device 6 includes a gear and two racks. The gear is fixedly mounted on the resonant modulation module 4, and the two racks are symmetrically slidably connected to the upper and lower ends of the main load-bearing components 1. The two racks mesh with the upper and lower ends of the gear, respectively. Therefore, by sliding the two gears in opposite directions, the gear can roll on the main load-bearing components 1, thereby changing the control direction and / or resonant frequency of the resonant modulation module 4.

[0097] In this embodiment, the length of each resonant modulation module 4 in the same metastructure component 2 decreases in a predetermined manner along the direction from the outside to the inside in various ways, specifically:

[0098] In the first implementation: from the outside to the inside, the length of each resonant modulation module 4 decreases proportionally, for example, the length of each resonant modulation module 4 decreases by 15mm, 68mm, and 290mm.

[0099] In the second implementation: from the outside to the inside, the length of each resonant modulation module 4 decreases gradually in a segmented manner. For example, the length of each resonant modulation module 4 decreases by 100mm in the first segment, by 70mm in the second segment, and by 40mm in the third segment (i.e., 100mm → 70mm → 40mm).

[0100] In the third implementation: from the outside to the inside, the length of each resonant modulation module 4 decreases in a cyclical gradient. For example, the length of each resonant modulation module 4 decreases by 80mm in the first segment, by 55mm in the second segment, and by 80mm in the third segment (i.e., 80mm→55mm→80mm). Or, for example, the length of each resonant modulation module 4 decreases by 22mm in the first segment, by 48mm in the second segment, by 74mm in the third segment, by 48mm in the fourth segment, and by 22mm in the fifth segment (i.e., 22mm→48mm→74mm→48mm→22mm).

[0101] In this embodiment, the main load-bearing component 1, as the main component bearing the load, can be a T-beam, I-beam, C-beam, or hollow tubular structure. Alternatively, it can be a T-beam, C-beam, or hollow tubular structure with local reinforcing ribs and / or local perforations. In addition, it can also be a composite structure such as a multi-layer composite pipe, multi-layer composite plate, or lattice sandwich beam as the main load-bearing component 1.

[0102] For example:

[0103] refer to Figure 16 The main load-bearing component 1 is an I-beam with local perforations;

[0104] refer to Figure 17 The main load-bearing component 1 is a rectangular beam;

[0105] refer to Figure 18 The main load-bearing component 1 is a composite structure made of multi-layer boards.

[0106] The load platform 3 can be configured as a solid column or a hollow column structure, such as a cylinder, frustum, ring, or ring structure. In specific applications, it is not limited to configuring the load platform 3 as a column structure; it can also be configured as a beam assembly, rod assembly, or plate assembly structure, or as an assembly structure of beams, rods, and plates.

[0107] For example:

[0108] refer to Figure 19 Load platform 3 is a frustum structure;

[0109] refer to Figure 20 Load platform 3 is a circular ring structure;

[0110] refer to Figure 21 Load platform 3 is a beam composite structure;

[0111] refer to Figure 22 Load platform 3 is a plate assembly structure;

[0112] refer to Figure 23 The load platform 3 is a block structure with an internal cavity.

[0113] In the specific implementation process, the rotation angle and position of the orientation adjustment device 6 can be changed based on the changes in application scenarios and objectives. The stiffness and mass layout of the resonant modulation module 4 can be adjusted, the length change gradient of the resonant modulation module 4 can be adjusted, and the lattice, configuration and coupling relationship of the main load-bearing component 1, multiple sets of superstructure components 2 and load platform 3 can be designed in a coordinated manner to extend the resonant frequency of each resonant modulation module 4.

[0114] It should be noted that in this embodiment, the connections between the various components of the integrated superstructure 7 can be achieved through welding, integral molding, bolt fixing, pin fixing, etc.

[0115] Example 2

[0116] This embodiment discloses a low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure device (hereinafter referred to as "integrated superstructure device 8"), which includes two or more integrated superstructures 7 as in embodiment 1, wherein the load platforms 3 of two adjacent integrated superstructures 7 are connected; and / or the second ends of each main load-bearing component 1 of two adjacent integrated superstructures 7 are connected accordingly, that is, each integrated superstructure 7 in the integrated superstructure device 8 is connected in a staggered series.

[0117] For example:

[0118] refer to Figure 24 The integrated superstructure device 8 consists of two integrated superstructures 7, which are connected in an anti-symmetrical staggered series, meaning that the second ends of the main load-bearing components 1 of the two integrated superstructures 7 are connected accordingly. Preferably, the load platforms 3 of the two integrated superstructures 7 are also connected by a support column.

[0119] refer to Figure 25 The integrated superstructure device 8 consists of three integrated superstructures 7, which are connected in a positive-negative-positive staggered series. The first integrated superstructure 7 is connected to the load platform 3 of the second integrated superstructure 7, and the second integrated superstructure 7 is connected to the second end of each main load-bearing component 1 of the third integrated superstructure 7.

[0120] The principle and effects of the integrated superstructure and device in this invention are as follows:

[0121] 1. Multi-dimensional, high load-bearing capacity, small size:

[0122] On the one hand, based on the three-dimensional spatial gradient layered design, its unique geometric shape and layered relationship can be used to balance the pressure, tension, torsional force and shear force of the entire device system. That is, when subjected to external loads, the force on the integrated superstructure 7 will be distributed to the entire device system in a gradient structural mesh configuration and layered manner, achieving effective balance of multiple dimensions of loads such as tension, compression, torsion and shear, preventing the integrated superstructure 7 from being damaged due to local overload, and improving the load-bearing efficiency of the integrated superstructure 7 in multiple dimensions. On the other hand, the main load-bearing component 1, as the main load-bearing component, is connected to the load platform 3 at its upper end and forms a certain angle with the positive vertical direction of the load platform 3, so that every two adjacent main load-bearing components 1 and the foundation 5 form a triangular state, which greatly improves its load-bearing range and stability. At the same time, it creates a height difference between the main load-bearing component 1 and the superstructure component 2, further increasing the energy release effect and widening the load-bearing range. Furthermore, through the local stiffness reinforcement of the main load-bearing component 1 and the load platform 3 and the synergistic enhancement of the connection interface, the load-bearing efficiency of the integrated superstructure 7 can be further improved. In addition, the three-dimensional spatial gradient design, combined with the spider web-like configuration, helps to reduce the structural size and improve space utilization.

[0123] 2. Multidirectional, low-frequency, broadband:

[0124] On the one hand, by changing the thickness, length, number, and arrangement of the weak stiffness elastic part 42a, adjusting the size and relative position of the high stiffness mass part 42b, and setting the bending direction, angle, and number of bends of the zigzag resonant element 41, the resonant frequency of the resonant modulation module 4 can be designed to the target low frequency. When excited by an external load, the vibration signal of the corresponding target frequency will excite the resonant mode of the resonant modulation module 4, causing it to vibrate violently and release the vibration energy in the form of heat. Furthermore, by utilizing the height difference between the main load-bearing component 1 and the superstructure component 2, the resonant frequency of the resonant modulation module 4 can be designed to the target low frequency. The varying height difference further releases vibration energy, thereby suppressing the propagation of vibration energy to the load platform 3 and achieving low-frequency vibration reduction and isolation. On the other hand, each group of superstructure components 2 includes two or more resonant modulation modules 4, located within a triangular prism region. From the outside in, the length of the resonant modulation modules 4 is designed to decrease in a gradient manner, resulting in a gradient distribution of the resonant frequency of the resonant modulation modules 4. Simultaneously, each group of superstructure components 2 can be coordinated and connected, achieving a distributed broadening design of the resonant frequency of the resonant modulation modules 4 within the entire system, significantly widening the vibration reduction and isolation frequency band of the device system. In addition, multiple main load-bearing components 1 are connected to the load platform 3 and form a certain angular distribution. The resonant modulation modules 4 are located within the triangular prism region formed by the vertical tension of adjacent main load-bearing components 1. The entire system is coordinated and connected to form a whole, enabling multi-directional vibration reduction and isolation control, including the z, x, and y directions, to be achieved simultaneously.

[0125] 3. Easy to process and adjustable:

[0126] On the one hand, the designed low-frequency broadband multi-directional vibration reduction and isolation and multi-dimensional load-bearing enhancement integrated superstructure and device has a simple overall structure, is easy to process, and is convenient for engineering applications. On the other hand, it has many adjustable parameters, which can be quickly adjusted and redesigned according to actual needs. Furthermore, according to changes in the on-site load environment, the resonant frequency of the resonant modulation module 4 can be quickly adjusted and adapted by changing the rotation angle and position of the orientation adjustment device 6. In addition, it can be combined with artificial intelligence technology to realize intelligent design and control.

[0127] In summary, this invention enables low-frequency broadband high-load-bearing vibration reduction and isolation control in multiple dimensions, including tension, compression, torsion, and shear, and in multiple directions, including the z, x, and y axes. Furthermore, the resonant frequency of the resonant modulation module 4 can be rapidly adjusted and adapted by changing the angle and position of the orientation adjustment device 6. This structure possesses advantages such as low-frequency ultra-wideband, high stiffness, high strength, compact spatial structure, and ample, easily adjustable, and flexible design space. It holds promise for application in vibration reduction and isolation control of modern high-end equipment such as aircraft, high-speed trains, ships, and precision machine tools.

[0128] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure, characterized in that, The load platform, a plurality of main load-bearing components, and a plurality of superstructure assemblies; The first end of each main load-bearing component is connected to the load platform in a circumferential interval, the second end extends radially outward, and the length direction of each main load-bearing component has an included angle with the perpendicular direction of the load platform θ ; A trapezoidal column region is formed between two adjacent main load-bearing components, and each superstructure assembly is located in a trapezoidal column region. Each superstructure assembly comprises two or more resonant modulation modules, and the lengths of the resonant modulation modules in the same superstructure assembly decrease in a predetermined manner from the outside to the inside in the trapezoidal column region. The resonant modulation module has a meandering resonant unit, which is a bent beam structure or a curved beam structure, or a combination of at least two beams of straight beams, bent beams, and curved beams. The resonant modulation module has a variable stiffness combined resonant unit, which comprises at least two weak stiffness elastic parts and at least one high stiffness mass part.

2. The low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure of claim 1, wherein, The main load-bearing component is a T-shaped beam, an I-shaped beam, a U-shaped beam, or a hollow tubular structure. The main load-bearing component is a beam with local stiffeners and / or local perforations. The main load-bearing component is a composite structure.

3. The low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure of claim 1, wherein, The load platform is a solid column or a hollow column. The load platform is a beam assembly, a rod assembly, or a plate assembly. The load platform is a combination of beams, rods, and plates.

4. The low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure of claim 1 or 2 or 3, wherein, The weak stiffness elastic part and / or the high stiffness mass part has a local second cavity, and the second cavity contains a plurality of movable microparticles.

5. The low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure of claim 1 or 2 or 3, wherein, In the same trapezoidal column region, the two ends of each resonant modulation module are rigidly connected to the adjacent two main load-bearing components. In the same trapezoidal column region, the two ends of each resonant modulation module are rotatably and / or slidably connected to the adjacent two main load-bearing components, so as to change the modulation direction and / or resonant frequency of the resonant modulation module by rotation and / or sliding.

6. The low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure of claim 1 or 2 or 3, wherein, In the same trapezoidal column region, the lengths of the resonant modulation modules in the same superstructure assembly decrease in equal proportion, segmented proportion, or cyclic proportion from the outside to the inside.

7. A low frequency broadband multi-directional isolation and multi-dimensional load bearing integrated superstructure device, characterized in that, The load platform, a plurality of main load-bearing components, and a plurality of superstructure assemblies; The load platforms of adjacent two integrated superstructures are connected; and / or The second ends of the main load-bearing components of adjacent two integrated superstructures are connected correspondingly.

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