Particle damper with power generation function

Abstract

This invention relates to the field of vibration suppression technology and discloses a particle damper with power generation function, comprising: a container with an internal cavity; one or more longitudinal partitions disposed within the cavity, dividing the cavity into multiple sub-cavities, each sub-cavity having a conductive electrode assembly on its bottom surface, the conductive electrode assembly including a first electrode and a second electrode, the first and second electrode being spaced apart; and one or more transverse partitions disposed within the cavity, the transverse partitions intersecting the longitudinal partitions, the transverse partitions dividing each sub-cavity into multiple grid spaces, each grid space containing multiple damping particles placed on the conductive electrode assembly; when the container vibrates, the relative motion between the damping particles and the corresponding conductive electrode assembly generates an electric current. This invention can effectively suppress the vibration of the main structure at different vibration frequencies and can also collect and utilize dissipated vibration energy.

Description

Technical Field

[0001] This invention relates to the field of vibration suppression technology, and in particular to a particle damper with power generation function. Background Technology

[0002] A particulate damper is a device that uses particulate material placed at a specific filling ratio inside a structure or a specific cavity to control the response of a moving structure. When the main structure with the particulate damper installed vibrates under external excitation, the damper vibrates synchronously. The particles inside the damper collide and rub against each other within the cavity, thus dissipating vibrational energy and providing damping for the main structure. In recent years, particulate dampers have rapidly developed as a simple and effective passive vibration control device. However, while existing particulate dampers can effectively suppress the vibration of the main structure, they cannot collect dissipated vibrational energy, and because the particulate material is concentrated in a single cavity, they are only suitable for vibration suppression under a single vibration condition. Summary of the Invention

[0003] The purpose of this invention is to provide a particle damper with power generation function, which is suitable for vibration suppression under different vibration conditions, and can collect dissipated vibration energy while suppressing the vibration of the main structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The particle damper with power generation function described in this invention includes:

[0006] A container, wherein the container has a cavity inside;

[0007] One or more longitudinal partitions are disposed in the cavity, the longitudinal partitions divide the cavity into multiple sub-cavities, and each sub-cavity has a conductive electrode sheet group on its bottom surface, the conductive electrode sheet group including a first electrode sheet and a second electrode sheet, the first electrode sheet and the second electrode sheet being disposed at intervals;

[0008] One or more transverse partitions are disposed within the cavity. The transverse partitions are intersected with the longitudinal partitions. The transverse partitions divide each of the sub-cavities into multiple grid spaces. Multiple damping particles are disposed within one or more of the grid spaces. The damping particles are placed on the conductive electrode sheet group of their respective sub-cavities.

[0009] When the container vibrates, the damping particles move relative to the corresponding conductive electrode group, generating an electric current.

[0010] Preferably, the size of each of the grid spaces is adjustable.

[0011] Preferably, the longitudinal partition is fixedly connected to the cavity wall of the cavity, and the transverse partition is movably connected to the cavity wall of the cavity and the longitudinal partition, respectively.

[0012] Preferably, the cavity wall and the longitudinal partition are provided with multiple slots, and the transverse partition is engaged in the slots.

[0013] Preferably, the number of damping particles placed in the plurality of said grid spaces is the same, partially the same, or different.

[0014] Preferably, the longitudinal partition extends along the length of the cavity, and the transverse partition extends along the width of the cavity.

[0015] Preferably, the first electrode sheet and the second electrode sheet are respectively arranged along the length direction parallel to the corresponding sub-cavity.

[0016] Preferably, each of the sub-cavities is provided with a wire-passing hole for passing electrical wires through.

[0017] Preferably, the damping particles are spherical polytetrafluoroethylene particles, and the first electrode sheet and the second electrode sheet are both aluminum films with positively charged friction material.

[0018] Compared with the prior art, the particle damper with power generation function according to an embodiment of the present invention has the following advantages:

[0019] This invention discloses a particle damper with power generation function. A longitudinal partition and a transverse partition are arranged within the cavity of a holding container. The longitudinal partition divides the cavity into multiple sub-cavities, and the transverse partition divides the sub-cavities into multiple grid spaces. Damping particles are placed in one or more grid spaces. When the holding container vibrates with the main structure, the damping particles in the grid spaces collide and rub against the cavity walls, the longitudinal partitions, and the transverse partitions, as well as against each other. This significantly dissipates and transfers the kinetic energy of the main structure's vibration, effectively suppressing its vibration. This invention can determine the location of the grid spaces containing the damping particles and the number of damping particles in each grid space according to the vibration conditions of the main structure, making it applicable to different vibration conditions and effectively suppressing the vibration of the main structure at different frequencies.

[0020] In this invention, conductive electrode plates are provided on the bottom surface of each sub-cavity. When the transverse partitions form a grid space, they do not obstruct the conductive electrode plates. When the container vibrates, the damping particles and the corresponding conductive electrode plates move relative to each other. The damping particles and the conductive electrode plates have different electron-gaining and loss capabilities. Due to frictional contact and electrostatic induction, free charges are generated on the surfaces of both the damping particles and the conductive electrode plates. The damping particles carry a negative charge, while the conductive electrode plates carry a positive charge. When a load is connected between the two positively charged first and second electrode plates, the induced potential difference drives electrons to flow through the external circuit between the two electrodes, thus forming a current. Therefore, the damping particles of this invention can generate electrical energy when moving relative to the conductive electrode plates, facilitating the collection and utilization of dissipated vibration energy and avoiding energy waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the particle damper with power generation function described in an embodiment of the present invention;

[0022] Figure 2 This is a top view schematic diagram of the particle damper with power generation function described in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the particle damper removing the transverse partition in an embodiment of the present invention;

[0024] In the diagram, 1 is the container; 11 is the slot; 12 is the wire hole; 2 is the longitudinal partition; 3 is the transverse partition; 4 is the damping particle; 5 is the conductive electrode assembly; 51 is the first electrode; 52 is the second electrode; 6 is the sub-cavity; and 7 is the grid space. Detailed Implementation

[0025] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] like Figures 1-3 As shown in the figure, a particle damper with power generation function according to an embodiment of the present invention includes a container 1, one or more longitudinal partitions 2, and one or more transverse partitions 3. The container 1 has a cavity inside, and the longitudinal partitions 2 and transverse partitions 3 are all disposed in the cavity. The longitudinal partitions 2 divide the cavity into multiple sub-cavities 6. Each sub-cavity 6 has a conductive electrode sheet group 5 disposed on its bottom surface. The conductive electrode sheet group 5 includes a first electrode sheet 51 and a second electrode sheet 52. The first electrode sheet 51 and the second electrode sheet 52 are located between the bottom surfaces of their respective sub-cavities 6. The sub-cavities 6 are separated by a partition, in which the first electrode plate 51 and the second electrode plate 52 are used as two electrodes; the transverse partition 3 is disposed in the cavity, and the transverse partition 3 is intersected with the longitudinal partition 2, the transverse partition 3 divides each sub-cavity 6 into multiple grid spaces 7, and multiple damping particles 4 are disposed in one or more of the grid spaces 7, the damping particles 4 are placed on the conductive electrode plate group 5 of the sub-cavity 6; when the container 1 vibrates, the damping particles 4 and the corresponding conductive electrode plate group 5 move relative to each other to generate current.

[0029] When the container 1 vibrates with the main structure, the damping particles 4 in the grid space 7 collide and rub against the cavity wall, longitudinal partition 2, and transverse partition 3, as well as against each other. This significantly dissipates and transfers the vibrational kinetic energy of the main structure, effectively suppressing its vibration. This invention can determine the location of the grid space 7 containing the damping particles 4 and the number of damping particles 4 in each grid space 7 according to the vibration conditions of the main structure, making it applicable to different vibration conditions and effectively suppressing the vibration of the main structure at different frequencies, thus reducing the degree of damage to the main structure.

[0030] In this invention, conductive electrode groups 5 are provided on the bottom surface of each sub-cavity 6. When the transverse partition 3 divides the space into grid spaces 7, it does not block the conductive electrode groups 5. When the container 1 vibrates, the damping particles 4 and the corresponding conductive electrode groups 5 move relative to each other. The damping particles 4 and the conductive electrode groups 5 have different electron gain and loss capabilities. The surfaces of the damping particles and the conductive electrode groups will generate free charges due to frictional contact and electrostatic induction. The damping particles are negatively charged, and the conductive electrode groups are positively charged. When a load is connected between the two positively charged first and second electrode groups, the induced potential difference will drive electrons to flow between the two electrodes through the external circuit, thereby forming a current. Therefore, the damping particles 4 of this invention can generate electrical energy when they move relative to the conductive electrode groups. This allows the invention to generate electricity while effectively suppressing vibration, facilitating the collection and utilization of dissipated vibration energy and avoiding energy waste. Furthermore, this invention has a simple structure, is easy to manufacture, has low material costs, and good durability.

[0031] Preferably, the size of each of the grid spaces 7 is adjustable. By adjusting the size of the grid space 7, the distance between the damping particles 4 and the sidewall of the grid space 7 can be adjusted. The sidewall is the cavity wall, the longitudinal partition 2, or the transverse partition 3. By adjusting the distance, the collision frequency between the damping particles 4 and the sidewall can be adjusted, thereby adjusting the vibration suppression effect and making it suitable for vibration suppression under different vibration conditions.

[0032] In this embodiment, as Figures 1-3As shown, the longitudinal partition 2 is fixedly connected to the cavity wall of the cavity, dividing the cavity into multiple sub-cavities 6 of constant size. The transverse partition 3 is movably connected to the cavity wall of the cavity and the longitudinal partition 2, respectively, and is movable within the cavity, allowing its position and number to be adjusted. By adjusting the position of the transverse partition 3, the size of the grid space 7 between the transverse partition 3 and the longitudinal partition 2 and the cavity wall can be adjusted. By adjusting the number of transverse partitions 3, the number and size of the grid spaces 7 and the overall mass of the particle damper can be adjusted. Therefore, by adjusting the position and number of transverse partitions 3, the vibration suppression effect of the particle damper can be adjusted. Furthermore, the conductive electrode assembly 5 is located within the sub-cavities 6, and the transverse partition 3 does not block the conductive electrode assembly 5. Therefore, changing the position and number of transverse partitions 3 will not affect the collection of electrical energy. Furthermore, multiple slots are provided on the cavity wall and the longitudinal partition 2, and the transverse partition 3 is engaged in these slots. The position of the transverse partition 3 can be adjusted by engaging it in different slots. In this embodiment, multiple slot openings 11 are provided on the cavity wall and the longitudinal partition 2, and the transverse partition 3 is provided with slots that match the slot openings 11. The transverse partition 3 is connected to the container 1 or the longitudinal partition 2 through the engagement of the slot openings 11 and the slots. Setting the transverse partition 3 in a snap-fit ​​fixing manner facilitates disassembly and installation, and can effectively prevent the transverse partition 3 from blocking the conductive electrode sheet group 5 of the sub-cavity 6.

[0033] In this embodiment, the longitudinal partition 2 extends along the length of the cavity, and the transverse partition 3 extends along the width of the cavity. The longitudinal partition 2 and the transverse partition 3 are perpendicular to each other. The grid space 7 is square or rectangular. The sub-cavity 6 is formed by the longitudinal partition 2 and the cavity wall of the cavity. The grid space 7 is formed by the longitudinal partition 2 and the transverse partition 3, or by the longitudinal partition 2, the transverse partition 3, and the cavity wall of the cavity. Further, the container 1 is square, with a closed bottom and an open top or a cover plate. The cover plate closes the cavity to prevent the damping particles 4 from jumping out of the grid space 7 when vibrating. In this embodiment, the two ends of the longitudinal partition 2 are fixed to two opposite cavity walls of the cavity, and the two ends of the transverse partition 3 are respectively secured to the other two opposite cavity walls of the cavity. In this embodiment, two longitudinal partitions 2 are fixedly provided, and the two longitudinal partitions 2 divide the cavity into three sub-cavities 6. A set of conductive electrode sheets 5 is fixed on the bottom surface of each sub-cavity 6. Two transverse partitions 3 are provided, and the two transverse partitions 3 are both perpendicular to the longitudinal partitions 2. The two ends of each transverse partition 3 are respectively connected to the two opposite side walls of the cavity. The transverse partitions 3 divide each sub-cavity 6 into three grid spaces 7.

[0034] In this embodiment, as Figure 3As shown, the first electrode sheet 51 and the second electrode sheet 52 are respectively arranged parallel to the length direction of the corresponding sub-cavity 6. The first electrode sheet 51 and the second electrode sheet 52 are laid on the bottom surface of the sub-cavity 6 along the length direction, increasing the area occupied by the conductive electrode sheet group 5 in the sub-cavity 6, so that the damping particles 4 in each grid space 7 can contact the conductive electrode sheet group 5. In this embodiment, the first electrode sheet 51 and the second electrode sheet 52 are both aluminum films. The first electrode sheet 51 and the second electrode sheet 52 can be glued and fixed to the bottom surface of the sub-cavity 6.

[0035] Optionally, the number of damping particles 4 placed in the multiple grid spaces 7 may be the same, partially the same, or different. Specifically, the number of damping particles 4 placed in the grid space 7 may be determined according to the size of the grid space 7 and the vibration conditions of the main structure.

[0036] In this embodiment, as Figure 1 and Figure 3 As shown, each of the sub-cavities 6 is provided with a through hole 12 for threading an electrical conductor. The current generated by the friction between the damping particles 4 and the conductive electrode assembly 5 can be discharged through the electrical conductor. The electrical conductor is connected to a power supply terminal, which can be a battery, to store electrical energy. The conductive electrode assemblies 5 in each sub-cavity 6 can be connected in parallel to the same power supply terminal.

[0037] In this embodiment, the damping particle 4 is a spherical polytetrafluoroethylene particle carrying a negatively charged frictional material. Further, the elastic modulus of the damping particle 4 is 1.5 × 10⁻⁶. 3 MPa, the Poisson's ratio of the damping particle 4 is 0.4, and the mass density of the damping particle 4 is 2.32 × 10⁻⁶. 3 kg / m 3 The static friction coefficient of the damping particle 4 is 0.11. Both the first and second electrode plates are aluminum films made of positively charged friction material, and the elastic modulus of the aluminum film is 70 × 10⁻⁶. 3 MPa, the Poisson's ratio of the aluminum film is 0.33, and the mass density of the aluminum film is 2.6 × 10⁻⁶. 3 kg / m 3 .

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A particle damper having a power generation function, characterized by comprising: include: A container, wherein the container has a cavity inside; One or more longitudinal partitions are disposed within the cavity, dividing the cavity into multiple sub-cavities. Each sub-cavity has a conductive electrode assembly on its bottom surface, comprising a first electrode and a second electrode, spaced apart. The first and second electrode assemblies are respectively arranged parallel to the length direction of their respective sub-cavities. The first and second electrode assemblies are laid along the length direction on the bottom surface of the sub-cavities. One or more transverse partitions are disposed within the cavity. The transverse partitions are intersected with the longitudinal partitions. The transverse partitions divide each of the sub-cavities into multiple grid spaces. Multiple damping particles are disposed within one or more of the grid spaces. The damping particles are placed on the conductive electrode sheet group of their respective sub-cavities. When the container vibrates, the damping particles move relative to the corresponding conductive electrode group, generating an electric current. The size of each of the grid spaces can be adjusted; The longitudinal partition is fixedly connected to the cavity wall of the cavity, and the transverse partition is movably connected to the cavity wall and the longitudinal partition, respectively.

2. The particle damper with power generation function according to claim 1, characterized in that, The cavity wall and the longitudinal partition are provided with multiple slots, and the transverse partition is locked in the slots.

3. The granular damper with power generation function according to claim 1, characterized by The number of damping particles placed in the multiple lattice spaces may be the same, partially the same, or different.

4. The granular damper with power generation function according to claim 1, characterized by The longitudinal partition extends along the length of the cavity, and the transverse partition extends along the width of the cavity.

5. The particle damper with power generation function according to claim 1, characterized by, Each of the sub-cavities is provided with a wire-passing hole for passing electrical wires through.

6. The particle damper with power generation function according to claim 1, characterized by, The damping particles are spherical polytetrafluoroethylene particles, and the first electrode sheet and the second electrode sheet are both aluminum films with positively charged friction material.

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