Detachable eddy current tuned mass damper

Abstract

The utility model relates to the technical field of engineering vibration control, and discloses a detachable eddy current tuned mass damper which comprises a mass system, a spring system and a detachable eddy current damping system, the mass system is composed of a mass block, a groove matched with a positioning shaft is arranged in the mass block, and the spring system is arranged in the groove. A dustproof cover is further arranged on the mass block, and an eddy current damping system is arranged in the middle of the mass block. The spring system is composed of a spiral compression spring, a positioning shaft, a spring limiting ring and a bottom plate and provides rigidity for the whole tuned mass damper. Through the detachable assembly composed of the permanent magnet back plate, the permanent magnet and the limiting sliding plate, when magnetic energy of the permanent magnet fades greatly, the eddy current permanent magnet assembly can be replaced on site, and the specific replacement steps are that the dustproof buckle cover is disassembled, then the connecting lugs on the permanent magnet back plate are separated from the end plates, the assembly can be taken out, and a new eddy current assembly is replaced.

Description

Technical Field

[0001] This utility model relates to the field of engineering vibration control technology, specifically a detachable eddy current tuned mass damper. Background Technology

[0002] Tuned mass dampers are widely used in the field of engineering vibration control and can play a role in various scenarios such as equipment vibration, wind vibration, and human-induced vibration.

[0003] A tuned mass damper mainly consists of three parts: a mass unit, a spring system, and a damping system. The damping system typically employs either viscous damping or eddy current damping. Compared to viscous damping systems, eddy current damping systems do not suffer from liquid evaporation or leakage, thus exhibiting superior durability.

[0004] However, most eddy current damping systems use rare-earth permanent magnets with high magnetic energy to provide the magnetic field. The magnetic energy decay of permanent magnets is greatly affected by operating temperature and environment. After prolonged use, problems such as magnetic energy decay and magnet corrosion and pulverization will still occur. This problem also affects the service life of eddy current tuned mass dampers. Utility Model Content

[0005] The purpose of this invention is to provide a detachable eddy current tuned mass damper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detachable eddy current tuned mass damper, comprising a mass system, a spring system and a detachable eddy current damping system, wherein the mass system is composed of a mass block, which has a groove matching the positioning shaft to ensure the movement space of the positioning shaft during vertical vibration; the mass block is also provided with a dust cover, and the eddy current damping system is arranged in the middle.

[0007] The spring system consists of a helical compression spring, a positioning shaft, a spring limiting ring, and a base plate, providing stiffness to the entire tuned mass damper.

[0008] The detachable eddy current damping system consists of an energy-dissipating copper plate, a limiting slide plate, a permanent magnet back plate, a permanent magnet, an end plate, a rotating chain rod, and a permanent magnet back plate connecting lug.

[0009] Preferably, the limiting slide plate, permanent magnet back plate, permanent magnet, and permanent magnet back plate connecting ear are integrated into a single unit to form a detachable component. This component is replaceable. The limiting slide plate is made of low-friction coefficient wear-resistant materials such as polytetrafluoroethylene and polyethylene. Its main function is to limit the distance between the energy-consuming copper plate and the permanent magnet, thereby ensuring the stability of the damping performance.

[0010] Preferably, the detachable component is bolted to the end plate via a permanent magnet backplate connecting lug, which facilitates replacement. The entire eddy current detachable component can be configured as one or more sets depending on the required damping force and space size requirements. The permanent magnets on the permanent magnet backplate are arranged in an alternating pattern or in a Halebeck array.

[0011] Preferably, the permanent magnet is connected to the base plate via a rotating chain rod, and the energy-dissipating copper plate is connected to the mass block. When the mass block vibrates in coordination with the vibration structure, the energy-dissipating copper plate and the permanent magnet undergo relative motion to generate an induced current, which dissipates the vibration energy.

[0012] This invention provides a detachable eddy current tuned mass damper. It has the following advantages:

[0013] (1) By designing the eddy current damping system as detachable and replaceable, when the eddy current damping system fails, only the eddy current damping system can be replaced, without replacing the entire tuned mass damper.

[0014] (2) The present invention is a detachable component consisting of a permanent magnet back plate, a permanent magnet and a limiting slide plate. When the magnetic energy of the permanent magnet is greatly reduced, the eddy current permanent magnet component can be replaced on site. The specific replacement steps are: remove the dust cover, then separate the connecting ear on the permanent magnet back plate from the end plate, and the component can be taken out and replaced with a new eddy current component. Attached Figure Description

[0015] Figure 1 This is a front view of the detachable eddy current damped tuned mass damper of this utility model.

[0016] Figure 2 This is a side view of the detachable eddy current damped tuned mass damper of this utility model.

[0017] Figure 3 This is a view of the components of the detachable eddy current damping system of this utility model;

[0018] Figure 4 This is a view of the permanent magnet backplate in the detachable eddy current damping system assembly of this utility model.

[0019] In the diagram: mass block 1-1, groove 1-2, dust cover 1-3, spiral compression spring 2-1, positioning shaft 2-2, spring limit ring 2-3, base plate 2-4, energy-consuming copper plate 3-1, limit slide plate 3-2, permanent magnet back plate 3-3, permanent magnet 3-4, end plate 3-5, rotating chain rod 3-6, permanent magnet back plate connecting ear 3-7. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] A preferred embodiment of the detachable eddy current tuned mass damper provided by this utility model is, for example... Figure 1-4 As shown: A detachable eddy current tuned mass damper includes a mass system, a spring system and a detachable eddy current damping system. The mass system consists of a mass block 1-1, which has a groove 1-2 that matches the positioning shaft 2-2 to ensure the movement space of the positioning shaft 2-2 during vertical vibration. The mass block 1-1 is also provided with a dust cover 1-3, and the eddy current damping system is arranged in the middle.

[0023] The spring system consists of a helical compression spring 2-1, a positioning shaft 2-2, a spring limiting ring 2-3, and a base plate 2-4, providing stiffness to the entire tuned mass damper.

[0024] The detachable eddy current damping system consists of an energy-dissipating copper plate 3-1, a limiting slide plate 3-2, a permanent magnet back plate 3-3, a permanent magnet 3-4, an end plate 3-5, a rotating chain rod 3-6, and a permanent magnet back plate connecting ear 3-7. The limiting slide plate 3-2, the permanent magnet back plate 3-3, the permanent magnet 3-4, and the permanent magnet back plate connecting ear 3-7 are integrated into a detachable component that can be replaced. The limiting slide plate 3-2 is made of low-friction coefficient wear-resistant materials such as polytetrafluoroethylene and polyethylene, and its main function is to limit the distance between the energy-dissipating copper plate 3-1 and the permanent magnet 3-4 to ensure the stability of the damping performance.

[0025] The detachable component is connected to the end plate 3-5 by bolts through the permanent magnet back plate connecting lug 3-7, which is convenient for replacement. The entire eddy current detachable component can be set as one or more groups according to the required damping force and space size requirements. The permanent magnets 3-4 are arranged in an alternating arrangement or in a Heilbeck array on the permanent magnet back plate 3-3.

[0026] The permanent magnet 3-4 is connected to the base plate 2-4 via the rotating chain 3-6, and the energy-dissipating copper plate 3-1 is connected to the mass block 1-1. When the mass block 1-1 vibrates in coordination with the vibration structure, the energy-dissipating copper plate 3-1 and the permanent magnet 3-4 move relative to each other, generating an induced current and dissipating vibration energy.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A detachable eddy current tuned mass damper, comprising a mass system, a spring system, and a detachable eddy current damping system, characterized in that: in, The mass system consists of a mass block (1-1) with a groove (1-2) inside that matches the positioning shaft (2-2) to ensure the movement space of the positioning shaft (2-2) during vertical vibration. The mass block (1-1) is also equipped with a dust cover (1-3) and an eddy current damping system is arranged in the middle. The spring system consists of a helical compression spring (2-1), a positioning shaft (2-2), a spring limiting ring (2-3), and a base plate (2-4), providing stiffness to the entire tuned mass damper. The detachable eddy current damping system consists of an energy-consuming copper plate (3-1), a limiting slide plate (3-2), a permanent magnet back plate (3-3), a permanent magnet (3-4), an end plate (3-5), a rotating chain rod (3-6), and a permanent magnet back plate connecting lug (3-7).

2. The detachable eddy current tuned mass damper according to claim 1, characterized in that: The limiting slide (3-2), permanent magnet back plate (3-3), permanent magnet (3-4), and permanent magnet back plate connecting ear (3-7) are integrated into a single unit, forming a detachable component that can be replaced.

3. A detachable eddy current tuned mass damper according to claim 1, characterized in that: The detachable component is connected to the end plate (3-5) by bolts through the permanent magnet back plate connecting lug (3-7), which is convenient for replacement. The entire eddy current detachable component can be set as one or more groups according to the required damping force and space size requirements. The permanent magnets (3-4) are arranged in an alternating manner or in a Heilbeck array on the permanent magnet back plate (3-3).

4. A detachable eddy current tuned mass damper according to claim 1, characterized in that: The permanent magnet (3-4) is connected to the base plate (2-4) via a rotating chain rod (3-6), and the energy-consuming copper plate (3-1) is connected to the mass block (1-1).

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