A vibration isolation and energy harvesting integrated superstructure beam

Abstract

The application discloses an integrated superstructure beam of vibration isolation and energy collection, and relates to the technical field of vibration isolation and energy collection. A plurality of resonance units are respectively arranged on two sides of a base beam. The resonance units are identical in structure and each comprises a shell, a central shaft, a weight sensing element and two magnetic elements. The two ends of the central shaft are respectively arranged on two opposite inner walls of the shell. The central shafts of the resonance units are parallel to each other and perpendicular to the length direction of the base beam. The two magnetic elements are arranged on the two opposite inner walls of the shell in an opposite-pole mode. The connecting line between the two magnetic elements is perpendicular to the central shaft. The weight sensing element is sleeved on the central shaft and can slide along the length direction of the central shaft. The two magnetic elements are symmetrically arranged on the two sides of the weight sensing element. The weight sensing element can be reset between the two magnetic elements under the action of the two magnetic elements when sliding. The application integrates vibration isolation and energy collection, reduces cost, improves functionality and resource utilization.

Description

Technical Field

[0001] This invention relates to the field of vibration isolation and energy harvesting technology, and in particular to a superstructure beam that integrates vibration isolation and energy harvesting. Background Technology

[0002] In modern engineering and technology, vibration isolation technology and energy harvesting systems each play crucial roles. Vibration isolation technology is primarily used to mitigate or eliminate unwanted vibrations caused by external or internal sources, protecting structural integrity and improving equipment performance. Energy harvesting (or energy recovery) technology aims to capture environmental energy (such as thermal energy, vibration energy, wind energy, etc.) and convert it into electrical energy for power supply, which is of great significance for improving energy efficiency and promoting green environmental protection. Although vibration isolation and energy harvesting have been widely used in industry, construction, transportation, and other fields, they are often designed and implemented as two separate systems, which limits the optimal use of resources and space. Traditional vibration isolation technology often focuses on reducing or isolating undesirable vibrations, while energy harvesting technology focuses on collecting energy from the environment. Currently, there is a lack of integrated solutions that combine vibration isolation and energy harvesting, resulting in a significant amount of vibrational energy being inefficiently dissipated and underutilized.

[0003] Based on this, vibration isolation and energy harvesting are integrated into a single structure, which can effectively isolate vibrations while capturing, converting, and utilizing vibrational energy. This integrated design not only improves the functionality of structures and equipment but also promotes efficient energy use and cost savings. Summary of the Invention

[0004] The purpose of this invention is to provide a superstructure beam that integrates vibration isolation and energy harvesting, so as to solve the problems existing in the prior art, integrate vibration isolation and energy harvesting, reduce costs, improve functionality and resource utilization.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a superstructure beam integrating vibration isolation and energy harvesting, comprising a base beam and multiple resonant units. The multiple resonant units are respectively installed on both sides of the base beam. Each resonant unit has an identical structure and includes a shell, a central shaft, a load-sensing element, and two magnetic elements. The two ends of the central shaft are respectively installed on two opposite inner walls of the shell. The central shafts of each resonant unit are parallel to each other and perpendicular to the length direction of the base beam. The two magnetic elements have opposite poles and are respectively installed on two opposite inner walls of the shell. The line connecting the two magnetic elements is perpendicular to the central shaft. The load-sensing element is sleeved on the central shaft and can slide along the length direction of the central shaft. The two magnetic elements are symmetrically arranged on both sides of the load-sensing element. When the load-sensing element slides, it can be reset to be located between the two magnetic elements under the action of the two magnetic elements.

[0007] Preferably, the load sensing element includes a mass bearing and an induction coil, the mass bearing being slidably connected to the central shaft, and the induction coil being sleeved on the outer ring of the mass bearing.

[0008] Preferably, the mass bearing is made of iron.

[0009] Preferably, the induction coil is formed by winding enameled wire and fixing it to the outer periphery of the mass bearing, and the induction coil and the mass bearing are fixed together by hot melt adhesive.

[0010] Preferably, the two magnetic elements are a first magnet and a second magnet, with the N pole of the first magnet and the S pole of the second magnet facing each other; both the first magnet and the second magnet are circular magnets, and the magnetic field strength of both the first magnet and the second magnet is 160mT.

[0011] Preferably, there are 8 resonant units, and 4 resonant units are provided on each side of the base beam. The base beams located on the same side of the base beam are evenly arranged, and the resonant units located on both sides of the base beam are staggered.

[0012] Preferably, the base beam is provided with a plurality of first connecting holes, which are arranged sequentially along the length of the base beam; each of the outer shells is provided with two second connecting holes on one side, and the connection between the outer shell and the base beam is achieved by bolts passing through the first connecting holes and the second connecting holes in sequence.

[0013] Preferably, the central shaft is made of stainless steel.

[0014] Preferably, the base beam is an aluminum alloy beam.

[0015] Preferably, the resonant unit outputs electrical energy through a wire.

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

[0017] 1. The integrated vibration isolation and energy harvesting superstructure beam provided by the present invention has a good vibration isolation effect. By periodically adding resonant units, the integrated vibration isolation and energy harvesting superstructure beam can effectively absorb and isolate vibrations from external or internal sources, significantly reducing the impact of vibration on the structure and equipment. This vibration isolation effect helps to improve the durability of the vibration-isolated equipment and extend the service life of the equipment.

[0018] 2. The superstructure beam integrating vibration isolation and energy harvesting provided by this invention can convert harmful energy into electrical energy. It uses a resonator to convert vibration energy that was originally considered useless or harmful into electrical energy, so that more environmental energy can be recycled and reused, reducing dependence on external power sources and helping to achieve energy self-sufficiency and reduce carbon emissions.

[0019] 3. Traditional structures typically only bear load and support functions, while the integrated vibration isolation and energy harvesting superstructure beam provided by this invention can not only bear loads, but also perform vibration isolation and energy harvesting simultaneously. This multifunctionality makes the structural design more compact and efficient, reduces the need for additional equipment, and saves space and cost.

[0020] 4. The integrated vibration isolation and energy harvesting superstructure beam provided by this invention can be easily extended to different structures and scales, and is suitable for applications ranging from small mechanical equipment to large building structures. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments 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 these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the superstructure beam integrating vibration isolation and energy harvesting in this invention;

[0023] Figure 2 This is a schematic diagram of the structure of the base beam in this invention;

[0024] Figure 3 This is a schematic diagram of the resonant unit in this invention;

[0025] Figure 4 This is a schematic diagram of the resonant unit in this invention with its outer shell removed;

[0026] Figure 5 This is a motion analysis diagram of the superstructure beam integrating vibration isolation and energy harvesting in this invention;

[0027] In the figure: 1-base beam, 11-first connecting hole, 2-resonant unit, 21-second connecting hole, 22-central shaft, 23-first magnet, 24-second magnet, 25-induction coil, 26-mass bearing, 27-outer shell. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a superstructure beam that integrates vibration isolation and energy harvesting to solve the problems existing in the prior art, thereby integrating vibration isolation and energy harvesting to reduce costs, improve functionality and resource utilization.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-4As shown, this embodiment provides a superstructure beam integrating vibration isolation and energy harvesting, including a base beam 1 and multiple resonant units 2. The multiple resonant units 2 are respectively installed on both sides of the base beam 1. Each resonant unit 2 has the same structure. The resonant units 2 with energy harvesting function are periodically arrayed on the base beam 1 to form a superstructure. Within a specific frequency range (the resonant frequency of the resonant unit 2), the propagation of elastic waves is prevented, and the elastic waves are confined within the resonant units 2. The opposite-sided arrangement design allows it to cancel the influence of the force couple generated by the gravity of the resonant units 2 when placed vertically. This problem can be ignored if the structure is placed in a plane. The resonant unit 2 includes a shell 27, a central shaft 22, a load sensing element, and two magnetic elements. The two ends of the central shaft 22 are respectively installed on both sides of the shell 27. On the inner walls, the central axes 22 of each resonant unit 2 are parallel to each other and perpendicular to the length direction of the base beam 1. Two magnetic elements with opposite poles are respectively installed on the two opposite inner walls of the outer shell 27, so that the magnetic field direction is from one magnetic element to the other. The line connecting the two magnetic elements is perpendicular to the central axis 22. The load sensing element is sleeved on the central axis 22 and can slide along the length direction of the central axis 22. The two magnetic elements are symmetrically arranged on both sides of the load sensing element, ensuring that the magnetic field between the two magnetic elements can act on the load sensing element. When the load sensing element slides, it drives the load sensing element to return to its original position between the two magnetic elements. At the same time, during this process, the electromagnetic induction part in the resonant unit 2 can convert the elastic waves confined within it into electrical energy for output. Through this design, not only is the stability and safety of building and mechanical structures improved, but vibration energy in the environment can also be effectively converted and utilized to provide sustainable power support for electrical equipment itself or nearby, thereby reducing dependence on traditional energy and promoting environmental sustainability.

[0032] Specifically, the load-sensing element includes a mass bearing 26 and an induction coil 25. The mass bearing 26 is slidably connected to the central shaft 22 and functions as an oscillator. The induction coil 25 is sleeved on the outer ring of the mass bearing 26 and also functions as an oscillator. The mass bearing 26 is made of iron. Using iron ensures that it has sufficient mass, thereby generating sufficient momentum during vibration to achieve good vibration isolation. At the same time, the iron material is subjected to the magnetic force of the magnetic field, which is equivalent to the action of a spring. Therefore, the resonant unit 2 in this embodiment forms a spring-mass resonator.

[0033] The induction coil 25 is formed by winding enameled wire around and fixing it to the outer periphery of the mass bearing 26 to provide additional mass. The enameled wire has a diameter of 0.2 mm and is wound 100 turns around the mass bearing 26, which has a diameter of 10 mm. The induction coil 25 and the mass bearing 26 are fixed together with hot melt adhesive. Since the Lorentz force generated by the coil cutting magnetic field lines is too small compared to the magnetic force, the effect of the Lorentz force on the oscillator is ignored in this embodiment.

[0034] The two magnetic elements are a first magnet 23 and a second magnet 24, with the N pole of the first magnet 23 and the S pole of the second magnet 24 facing each other; both the first magnet 23 and the second magnet 24 are circular magnets, and the magnetic field strength of both the first magnet 23 and the second magnet 24 is 160mT.

[0035] There are eight resonant units 2, with four resonant units 2 on each side of the base beam 1, which can generate a parallel magnetic field. The base beams 1 on the same side of the base beam 1 are evenly arranged, while the resonant units 2 on both sides of the base beam 1 are staggered. The resonant units 2 are arranged periodically, and their number can be arbitrarily adjusted according to the manufacturing budget and structural space, as long as a periodic change can be formed.

[0036] The base beam 1 has multiple first connecting holes 11, which are arranged sequentially along the length of the base beam 1. Each outer shell 27 has two second connecting holes 21 on one side. Bolts are passed through the first connecting holes 11 and the second connecting holes 21 in sequence to connect the outer shell 27 and the base beam 1. The diameter of both the first connecting holes 11 and the second connecting holes 21 is 3.6 mm. The outer shell 27 is made of 3D printed PLA material.

[0037] The central shaft 22 is made of stainless steel and has a diameter of 5mm and a length of 50mm.

[0038] The base beam 1 is an aluminum alloy beam with a length of 400mm, a width of 30mm, and a thickness of 3mm. Those skilled in the art can also make adaptive changes to its dimensions according to actual needs.

[0039] The resonant unit 2 outputs electrical energy through wires, thereby realizing the collection of the converted electrical energy.

[0040] The integrated vibration isolation and energy harvesting superstructure beam in this embodiment utilizes the unique bandgap characteristics of superstructures to prevent elastic waves from propagating within the superstructure within the bandgap frequency range, thus achieving vibration isolation. Within the bandgap frequency range, the elastic waves in the superstructure are confined to the resonant unit 2 with the induction coil 25. During this process, the resonant unit 2 with the induction coil 25 vibrates violently, converting kinetic energy into electrical energy. This embodiment can be applied to railway tracks, subway tunnels, and highway bridges. This superstructure beam can reduce the impact of vibrations from passing trains or vehicles on the structure, while simultaneously harvesting energy for low-power devices inside the building, such as sensors, surveillance cameras, or emergency lighting systems.

[0041] Motion analysis in this embodiment: such as Figure 5 As shown, Figure 5 The black dashed line on the left side represents the magnetic field and its direction. Figure 5 The middle part of the diagram represents the three motion states (A, B, C) of the mass bearing 26 and the induction coil 25 (collectively referred to as the mass). A represents the state where the mass moves to one side pole, B represents the state where the mass is at the middle equilibrium point, and C represents the state where the mass moves to the other side pole. Figure 5 The right side of the diagram shows the force analysis for three motion states. A is affected by the magnetic forces on both sides, moving towards... Figure 5 B moves downwards, and is affected by the same magnetic forces on both sides, which cancel each other out and put them in an equilibrium position. C is affected by the magnetic forces on both sides and moves downwards. Figure 5 Movement in the upper-middle direction.

[0042] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A superstructure beam integrating vibration isolation and energy harvesting, characterized in that: The system includes a base beam and multiple resonant units, which are respectively installed on both sides of the base beam. Each resonant unit has the same structure and includes a shell, a central shaft, a load-sensing element, and two magnetic elements. The two ends of the central shaft are respectively installed on two opposite inner walls of the shell. The central shafts of each resonant unit are parallel to each other and perpendicular to the length direction of the base beam. The two magnetic elements have opposite poles and are respectively installed on two opposite inner walls of the shell. The line connecting the two magnetic elements is perpendicular to the central shaft. The load-sensing element is sleeved on the central shaft and can slide along the length direction of the central shaft. The two magnetic elements are symmetrically arranged on both sides of the load-sensing element. When the load-sensing element slides, it can be reset to be located between the two magnetic elements under the action of the two magnetic elements. The load sensing element includes a mass bearing and an induction coil. The mass bearing is slidably connected to the central shaft, and the induction coil is sleeved on the outer ring of the mass bearing. The resonant unit outputs electrical energy through wires; The resonant units located on the same side of the base beam are evenly arranged, while the resonant units located on both sides of the base beam are staggered.

2. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The mass bearing is made of iron.

3. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The induction coil is formed by winding enameled wire and fixing it to the outer periphery of the mass bearing, and the induction coil and the mass bearing are fixed together by hot melt adhesive.

4. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The two magnetic elements are a first magnet and a second magnet, with the N pole of the first magnet and the S pole of the second magnet facing each other; both the first magnet and the second magnet are circular magnets, and the magnetic field strength of both the first magnet and the second magnet is 160mT.

5. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: There are 8 resonant units, and 4 of the resonant units are provided on each side of the base beam.

6. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The base beam is provided with a plurality of first connecting holes, which are arranged sequentially along the length of the base beam; each of the outer shells is provided with two second connecting holes on one side, and the connection between the outer shell and the base beam is achieved by bolts passing through the first connecting holes and the second connecting holes in sequence.

7. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The central shaft is made of stainless steel.

8. The integrated vibration isolation and energy harvesting superstructure beam according to claim 1, characterized in that: The base beam is an aluminum alloy beam.

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