An amplification type negative poisson's ratio damping device

Abstract

The application provides an amplification type negative Poisson's ratio damping device, and relates to the technical field of damping devices.The device comprises a first mounting module, two second mounting modules, a first supporting rod, two second supporting rods, and two negative Poisson's ratio energy dissipation modules.The first supporting rod is hingedly connected to the first mounting module.The two second supporting rods are hingedly connected to the first supporting rod at one end and to the two second mounting modules at the other end.The negative Poisson's ratio energy dissipation module comprises a guide rod and an outer shell body sleeved on the guide rod.At least one first baffle and two second baffles are movably arranged on the guide rod and placed in the outer shell body.A cavity between the first baffle and the second baffle is provided with a plurality of negative Poisson's ratio energy dissipation units.The damping device improves the actual deformation amplitude of the negative Poisson's ratio energy dissipation steel plate, improves the damping and energy dissipation efficiency, and the assembled negative Poisson's ratio energy dissipation unit reduces the overall forming and processing difficulty, which is conducive to quick repair and maintenance after damage.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction device technology, and more specifically, to an enlarged negative Poisson's ratio vibration reduction device. Background Technology

[0002] Existing large-scale energy dissipation systems typically amplify inter-layer structural displacement by introducing lever designs into energy dissipation and vibration reduction devices. This amplifies the displacement to drive larger deformations in energy-dissipating components, achieving vibration reduction through "small deformation driving large energy dissipation." However, current technologies largely focus on displacement amplification itself, leaving room for further optimization in the integrated arrangement of the amplification mechanism and energy-dissipating components, stable force transmission, and efficient energy dissipation. Meanwhile, negative Poisson's ratio energy-dissipating steel plates, due to their unique geometry, possess good deformation coordination capabilities and energy dissipation potential. However, existing negative Poisson's ratio steel plates are mostly manufactured using integral molding methods, which are highly dependent on processing precision, molding processes, and equipment conditions, resulting in high manufacturing difficulty, high processing costs, and low material utilization. Furthermore, existing integral negative Poisson's ratio energy-dissipating components often require complete replacement after localized damage, hindering rapid repair and modular maintenance. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an enlarged negative Poisson's ratio vibration reduction device to solve the above problems.

[0004] The present invention adopts the following solution:

[0005] This application provides an enlarged negative Poisson's ratio vibration reduction device, including a first mounting module, two second mounting modules, a first support rod, two second support rods, and two negative Poisson's ratio energy dissipation modules; one end of the first support rod is hinged to the first mounting module; one end of each of the two second support rods is hinged to the first support rod, and the other end is respectively hinged to the two second mounting modules; The negative Poisson's ratio energy-consuming module includes a guide rod and an outer shell sleeved around the guide rod. At least one first baffle and two second baffles are movably mounted on the guide rod and housed within the outer shell. A cavity between the first and second baffles contains multiple negative Poisson's ratio energy-consuming units. Each negative Poisson's ratio energy-consuming unit includes two interlocking negative Poisson's ratio energy-consuming steel plates. The negative Poisson's ratio energy-consuming steel plates are generally H-shaped. Two fixed baffles are mounted on the guide rod and positioned outside the two second baffles, respectively. One end of the guide rod is hinged to the other end of the first support rod or the second mounting module, and the end of the outer shell away from the guide rod is hinged to the second mounting module or the other end of the first support rod; the guide rod can move along the axial direction of the outer shell under the action of external force, thereby causing the fixed baffle to drive the second baffle to move, thereby squeezing the negative Poisson's ratio energy consumption unit.

[0006] Furthermore, the H-shaped negative Poisson's ratio energy-consuming steel plate includes support arms that slope outwards or extend in an arc on both sides, and a connecting part connected to the middle of the two support arms; the connecting part is provided with a slot with one end open so that the two inverted negative Poisson's ratio energy-consuming steel plates can be interlocked.

[0007] Furthermore, it also includes a locking member, which includes a main body, an elastic part connected around the main body, and a snap-fit ​​part connected to the elastic part; a snap-fit ​​groove is provided on the inner side of the support arm; the snap-fit ​​part can be elastically snapped into the snap-fit ​​groove.

[0008] Furthermore, the support arm is provided with a barb and a slot; when the upper negative Poisson's ratio energy-consuming unit and the lower negative Poisson's ratio energy-consuming unit are stacked, they can be limited by hooking through the barb and fastened by fasteners inserted into the slot.

[0009] Furthermore, it includes two first baffles, with a separator movably sleeved on the guide rod between the two baffles.

[0010] Furthermore, the outer casing includes a first housing and a second housing detachably connected to one end of the first housing, with an end connector connected to the outer end of the second housing.

[0011] Furthermore, the mounting module includes a mounting plate and a connecting lug plate mounted on the mounting plate.

[0012] Furthermore, the first support rod is provided with a hinged connector, which can be moved and adjusted along the axial direction of the first support rod; one end of each of the two second support rods is hinged to the hinged connector.

[0013] By adopting the above technical solution, the present invention can achieve the following technical effects: This application provides an amplified negative Poisson's ratio vibration damping device. The device utilizes a lever-based energy-dissipating mechanism formed by support rods, effectively amplifying the relative displacement input to the main structure. This increases the actual deformation amplitude of the negative Poisson's ratio energy-dissipating steel plate, allowing the energy-dissipating units to engage earlier and improving vibration damping efficiency. Furthermore, the negative Poisson's ratio energy-dissipating unit is assembled from multiple units, significantly reducing the difficulty of processing and shaping, and decreasing reliance on overall precision machining processes. The modular structure allows for on-demand material cutting and assembly, reducing waste during overall processing, improving material utilization, and lowering manufacturing costs. When a local energy-dissipating unit is damaged, only the corresponding unit or module can be replaced, eliminating the need to replace the entire energy-dissipating steel plate, facilitating rapid repair and maintenance after damage. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the negative Poisson's ratio energy dissipation module structure of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of the negative Poisson's ratio energy dissipation module of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention. Figure 4 This is an exploded structural diagram of the negative Poisson's ratio energy dissipation module of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention; Figure 5 This is a partial exploded structural diagram of the negative Poisson's ratio energy dissipation unit of a negative Poisson's ratio energy dissipation module in an embodiment of the present invention. Figure 6 This is a schematic diagram of the negative Poisson's ratio energy dissipation unit of the negative Poisson's ratio energy dissipation module of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the locking component structure of the negative Poisson's ratio energy dissipation unit of a negative Poisson's ratio energy dissipation module in an embodiment of the present invention. Figure 8 This is a schematic diagram of the assembly structure of the negative Poisson's ratio energy dissipation unit stacked in a negative Poisson's ratio energy dissipation module of an enlarged negative Poisson's ratio vibration reduction device according to an embodiment of the present invention. Figure 9 yes Figure 8 A magnified schematic diagram of the connection between the inverted parts when the upper and lower layers of negative Poisson's ratio energy dissipation units are stacked; Icons: First support rod 1, Second support rod 2, Mounting plate 3, Connecting ear plate 4, Negative Poisson's ratio energy dissipation module 5, Guide rod 6, First baffle 7, Second baffle 8, Negative Poisson's ratio energy dissipation unit 9, Separator 11, Support arm 12, Connecting part 13, Slot 14, Locking component 15, Main body 16, Elastic part 17, Snap-fit ​​part 18, Barb part 19, Slot 20, Fastener 21, First housing 22, Second housing 23, End connector 24, End plate 25, Hinged connector 26, Center connector 27, Fixed baffle 28. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. 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.

[0017] Example Combination Figures 1 to 9 As shown, this embodiment provides an enlarged negative Poisson's ratio vibration reduction device, including a first mounting module, two second mounting modules, a first support rod 1, two second support rods 2, and two negative Poisson's ratio energy dissipation modules 5; one end of the first support rod 1 is hinged to the first mounting module; one end of each of the two second support rods 2 is hinged to the first support rod 1, and the other end is respectively hinged to the two second mounting modules.

[0018] Among them, such as Figures 2 to 4 As shown, the negative Poisson's ratio energy-consuming module 5 includes a guide rod 6 and an outer shell sleeved on the guide rod 6; two first baffles 7 and two second baffles 8 are movably disposed on the guide rod 6 and placed in the outer shell; a plurality of negative Poisson's ratio energy-consuming units 9 are disposed in the cavity between the first baffles 7 and the second baffles 8; the negative Poisson's ratio energy-consuming unit 9 includes two mutually interlocking negative Poisson's ratio energy-consuming steel plates; the negative Poisson's ratio energy-consuming steel plates are generally H-shaped; two fixed baffles 28 are screwed onto the guide rod 6 and are respectively placed outside the two second baffles 8.

[0019] A separator 11 is provided between the two first baffles 7 and sleeved on the guide rod 6 to separate the energy-consuming areas on the left and right sides and to guide and limit the movement range of the internal components, so as to prevent the device from having excessive lateral displacement, torsion or local instability during reciprocating force.

[0020] One end of the guide rod 6 is hinged to the other end of the first support rod 1 or the second mounting module, and the end of the outer shell away from the guide rod 6 is hinged to the second mounting module or the other end of the first support rod 1; the guide rod 6 can move along the axial direction of the outer shell under the action of external force, thereby causing the fixed baffle 28 to drive the second baffle 8 to move, thereby squeezing the negative Poisson's ratio energy consumption unit 9.

[0021] The mounting module includes a mounting plate 3 and connecting lugs 4 mounted on the mounting plate 3. The mounting plate 3 and connecting lugs 4 serve as interfaces with the main system and are connected by pins. A second support rod 2 is arranged at an angle to transmit external loads and displacements. A central connector 27 is connected to an energy dissipation device to transmit the relative displacement of the main structure to the negative Poisson's ratio energy dissipation module 5. The negative Poisson's ratio energy dissipation module 5 is located in the lower part of the device. Through the lever force transmission relationship of the support rods, the input displacement is amplified and transmitted to the negative Poisson's ratio energy dissipation module 5, causing it to produce more significant deformation and energy dissipation. Under external load excitation, the mechanical response of this vibration damping device begins with the axial sliding of the guide rod 6. This sliding displacement is directly transmitted to the negative Poisson's ratio energy dissipation steel plate. When the transmitted load exceeds the elastic limit of the negative Poisson's ratio energy dissipation steel plate, the element enters the material yielding stage, achieving energy dissipation through stable hysteretic plastic deformation, thereby achieving the vibration damping effect.

[0022] Specifically, in this embodiment, such as Figures 5 to 7 As shown, the H-shaped negative Poisson's ratio energy-consuming steel plate includes support arms 12 that slope outwards or extend in an arc on both sides, and a connecting part 13 connecting the middle of the two support arms 12. The connecting part 13 is provided with a slot 14 with one open end. Two mutually inverted negative Poisson's ratio energy-consuming steel plates are interlocked through the slot 14 to form the negative Poisson's ratio energy-consuming unit 9. The negative Poisson's ratio energy-consuming steel plate can be prefabricated by methods such as plate cutting, punching, bending, or partial forming, and then assembled into an overall energy-consuming unit. This not only reduces the dependence of the overall forming process on equipment precision and process conditions, reducing manufacturing difficulty, but also allows for on-demand material cutting and assembly, reducing material waste during the overall processing, improving material utilization, and reducing manufacturing costs.

[0023] In this embodiment, a locking member 15 is also included, comprising a main body 16, elastic portions 17 connected to the periphery of the main body 16, and a snap-fit ​​portion 18 connected to the elastic portions 17. A snap-fit ​​groove is provided on the inner side of the support arm 12. The snap-fit ​​portion 18 can elastically snap onto the snap-fit ​​groove to prevent the two mutually snapped negative Poisson's ratio energy-consuming steel plates from detaching. The locking member 15 is used to enhance the connection stability of the overall structure after assembly, preventing loosening or relative slippage of each unit during repeated stress. Through the above assembly connection method, a reliable overall force-bearing relationship can be formed between each negative Poisson's ratio energy-consuming steel plate, ensuring both overall force transmission continuity and facilitating partial disassembly and replacement. When a local energy-consuming unit is damaged, only the corresponding assembly unit or local module needs to be replaced, without replacing the entire energy-consuming steel plate, thus facilitating rapid repair and maintenance after damage.

[0024] In this embodiment, the support arm 12 is provided with a barb portion 19 and a slot 20; when the upper negative Poisson ratio energy consumption unit 9 and the lower negative Poisson ratio energy consumption unit 9 are stacked, they can be hooked and limited by the barb portion 19, and are fastened by the fastener 21 inserted into the slot 20.

[0025] In this embodiment, as Figure 8 and Figure 9 As shown, the system includes at least two layers of negative Poisson's ratio energy dissipation units 9. The upper and lower layers of negative Poisson's ratio energy dissipation units 9 are stacked and positioned by hooks 19. They are then fastened together by fasteners 21 inserted into the slots 20, forming a single unit, thereby limiting the position of each negative Poisson's ratio energy dissipation unit 9. Depending on different engineering requirements, the negative Poisson's ratio energy dissipation units 9 can be arranged in a longitudinal array, a planar array, or a modular combination to adapt to different load directions, different installation spaces, and different energy dissipation and vibration reduction requirements.

[0026] The outer casing includes a first housing 22 and a second housing 23 detachably connected to one end of the first housing 22. An end connector 24 is connected to the outer end of the second housing 23. Specifically, end plates 25 are detachably connected to both ends of the first housing 22 via high-strength bolts. The second housing 23 is a sleeve, with its inner end detachably connected to the end plate 25 on one side via high-strength bolts. The outer casing protects the internal negative Poisson's ratio energy-consuming unit 9 and its connecting components, reducing the adverse effects of external environment, collisions, or impurities on the device's performance, while simultaneously improving the overall rigidity and service reliability of the device.

[0027] The first support rod 1 is provided with a hinged connector 26, which can be moved and adjusted along the axial direction of the first support rod 1; one end of each of the two second support rods 2 is hinged to the hinged connector 26. The other end of the first support rod 1 is provided with a central connector 27 for connecting to the negative Poisson's ratio energy consumption module 5.

[0028] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A scaled-up negative Poisson's ratio vibration damping device, characterized in that, It includes a first mounting module, two second mounting modules, a first support rod (1), two second support rods (2), and two negative Poisson's ratio energy-consuming modules (5); one end of the first support rod (1) is hinged to the first mounting module; one end of each of the two second support rods (2) is hinged to the first support rod (1), and the other end is respectively hinged to the two second mounting modules; The negative Poisson's ratio energy-consuming module (5) includes a guide rod (6) and an outer shell sleeved on the guide rod (6); at least one first baffle (7) and two second baffles (8) are movably disposed on the guide rod (6) and placed inside the outer shell; a plurality of negative Poisson's ratio energy-consuming units (9) are disposed in the cavity between the first baffle (7) and the second baffles (8); the negative Poisson's ratio energy-consuming unit (9) includes two negative Poisson's ratio energy-consuming steel plates that are interlocked with each other; the negative Poisson's ratio energy-consuming steel plates are H-shaped in general; two fixed baffles (28) are disposed on the guide rod (6) and are respectively placed outside the two second baffles (8); One end of the guide rod (6) is hinged to the other end of the first support rod (1) or the second mounting module, and the end of the outer shell away from the guide rod (6) is hinged to the second mounting module or the other end of the first support rod (1); the guide rod (6) can move along the axial direction of the outer shell under the action of external force, thereby causing the fixed baffle (28) to drive the second baffle (8) to move, thereby squeezing the negative Poisson's ratio energy consumption unit (9).

2. The enlarged negative Poisson's ratio vibration damping device according to claim 1, characterized in that, The H-shaped negative Poisson's ratio energy-consuming steel plate includes support arms (12) that are inclined outward or extend in an arc on both sides, and a connecting part (13) connecting the middle of the two support arms (12); the connecting part (13) is provided with a slot (14) with one end open, so that the two inverted negative Poisson's ratio energy-consuming steel plates can be interlocked.

3. The enlarged negative Poisson's ratio vibration damping device according to claim 2, characterized in that, It also includes a locking member (15), which includes a main body (16), an elastic part (17) connected to the periphery of the main body (16), and a snap-fit ​​part (18) connected to the elastic part (17); a snap-fit ​​groove is provided on the inner side of the support arm (12); the snap-fit ​​part (18) can be elastically snapped into the snap-fit ​​groove.

4. The enlarged negative Poisson's ratio vibration damping device according to claim 2, characterized in that, The support arm (12) is provided with a barb (19) and a slot (20); when the upper negative Poisson ratio energy consumption unit (9) and the lower negative Poisson ratio energy consumption unit (9) are stacked, they can be hooked and limited by the barb (19) and fastened by the fastener (21) inserted into the slot (20).

5. The enlarged negative Poisson's ratio vibration damping device according to claim 1, characterized in that, It includes two first baffles (7), and a separator (11) movably sleeved on the guide rod (6) is provided between the two first baffles (7).

6. The enlarged negative Poisson's ratio vibration damping device according to claim 1, characterized in that, The outer shell includes a first shell (22) and a second shell (23) detachably connected to one end of the first shell (22), and an end connector (24) is connected to the outer end of the second shell (23).

7. The enlarged negative Poisson's ratio vibration damping device according to claim 1, characterized in that, The mounting module includes a mounting plate (3) and a connecting ear plate (4) disposed on the mounting plate (3).

8. The enlarged negative Poisson's ratio vibration damping device according to claim 1, characterized in that, The first support rod (1) is provided with a hinged connector (26), which can be moved and adjusted along the axial direction of the first support rod (1); one end of each of the two second support rods (2) is hinged to the hinged connector (26).

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