Anti-vibration module system and related anti-vibration device for the vibro-acoustic isolation of civil or industrial structures

Description

DESCRIPTION Technical field The present invention relates to a modular system anti-vibration and a related anti-vibration device for isolation 5 vibro-acoustic of civil or industrial structures. In general, the present invention finds application in field of vibration damping and in the field of vibration control propagation of waves and vibrations, mechanical and acoustic. Known art 10 There are devices configured to limit the propagation of vibrations generated by vehicles, machinery and systems, acting as isolation for surrounding areas. Such vehicles, machinery and systems in fact they are related to civil or industrial structures and are frequently sources of mechanical or acoustic vibrations, the propagation of which 15 in the environment is unwanted. The term vehicles includes, but is not limited to: rail vehicles, in particular trains of all types and sizes, rail vehicles rubber and the like. With the term machinery, we mean in a non-binding way limiting: industrial machines of all types and sizes (turbines, blades 20 wind turbines, etc.), construction site work tools. The prior art includes some solutions for vibration isolation acoustic insulation of civil or industrial structures using devices three-dimensional arranged in a periodic manner, to form barriers. Document WO2019072746 (A1) refers to a device 25 a vibration isolation module comprising: six elements of mass respectively adjacent and not joined; at least three elements of stiffness interconnected; six anchoring elements configured to mechanically connect each of the mass elements with respective portions of two of the stiffness elements. 5 Document WO2019141794 (A1) refers to a device a module for vibro-acoustic insulation, comprising: six elements of mass respectively adjacent and not joined; at least twelve elements of rigidity configured to mechanically connect the said six together mass elements, where each mass element comprises at least 10 four anchoring elements for at least four respective elements of stiffness. Document WO2022058948 (A1) refers to a device to reduce the transmission of vibrations into the ground parallel on its surface, consisting of one or more aligned elements, in which the 15 The outer contour of each element has the shape of a parallelepiped with recesses on one of its faces or through openings between two faces opposite, where vibrations are produced in particular by means of transport. The publication F. Nistri, F. Bosia, AS Gliozzi, L. 20 D'Alessandro, S. Caverni, P. Charkaluk, A. Corigliano, M. Miniaci, A. Colombi, NM Pugno, “Design and in field validation of a modular metamaterial for mitigation of railway induced vibrations”, Soil Dynamics and Earthquake Engineering, Volume 180, 2024, 108594, ISSN 0267-7261, refers to metamaterials exploited in applications of 25 civil engineering for the suppression of low-frequency vibrations. This document presents the design, installation and Validation of a 0.4 m thick metamaterial-based panel for the mitigation of vibrations induced by railways. The barrier comprises a locally resonant cubic unit composed of four 5 concrete pyramids connected to each other by thin external steel bars. The state of the art solutions, while allowing for isolation vibro-acoustic of civil or industrial structures, are not fully particularly effective in the preferred frequency range between 0-100 Hz for civil and industrial vibration isolation applications 10 industrial. Furthermore, the known art solutions present modular systems anti-vibration devices for vibro-acoustic insulation which are complex to to realize and sometimes unsuitable for industrial applications, especially on large scale. 15 Summary of the invention An object of the present invention is to obviate drawbacks of the prior art. An object of the present invention is to provide a system capable of damping and reducing vibrations generated by sources 20 vibrating or impact sources with application to civil structures or industrial, particularly in infrastructure, construction and industrial plants. A particular object of the present invention is to to present an anti-vibration system that is particularly effective in 25 a low frequency spectrum, particularly up to 100 Hz. A further particular object of the present invention is to present an anti-vibration system that allows for control the propagation of both elastic and acoustic vibrations, providing three-dimensional insulation. 5 A further particular object of the present invention is to present an anti-vibration system that is effective in civil and industrial contexts, and whose manufacturing is not excessively expensive. These and other goals are achieved by a modular system 10 anti-vibration mounts and a related anti-vibration device for isolation vibro-acoustic, according to the characteristics of the attached claims which form an integral part of this description. An idea underlying the present invention is to provide a anti-vibration module system. 15 The anti-vibration module system includes a device case. The case device comprises an upper element. The case device comprises a pair of lateral elements that structurally support the upper element and provide a internal cavity in the case device. 20 The anti-vibration module system includes a device resonant. The resonant device comprising at least one element of mass and a respective at least one connecting element. The at least a connecting element structurally connects the at least one mass element to the case device. The at least one mass element 25 mass is configured to oscillate inside the internal cavity below the action of a vibration acting on the case device. Advantageously, the modular system allows you to maximize the resonant mass of the resonant device, from since the at least one mass element and the respective at least one 5 connecting elements form a set inserted inside of the cash register device, without the latter constituting a impediment to the movement of at least one mass element. Advantageously, such an anti-vibration module system can be used in a periodic structure for vibration isolation 10 acoustic waves or vibrations generated by machinery and systems, traffic on infrastructure, construction sites and noise sources in general; modular repetition of the device can be selected based on to the application, providing three-dimensional insulation. Furthermore, the anti-vibration module system according to this 15 invention is effective in civil and industrial contexts since moment that requires inexpensive manufacturing. In fact, advantageously, the anti-vibration module system according to the present invention it can be made of materials of common use in the fields of civil engineering and mechanical engineering, 20 such as steel and concrete. In this sense, the modular system anti-vibration according to the present invention is suitable to support loads and stresses encountered in all civil or industrial applications. The anti-vibration module system according to the invention It therefore represents a more valid and more effective alternative to 25 known isolation devices. A further idea underlying this invention is to provide an anti-vibration device for the vibro-acoustic isolation of civil or industrial structures, which includes a plurality of systems anti-vibration modules deployed to define a barrier structure. 5 Additional features and benefits will be more apparent evident from the detailed description given below of forms of preferred, non-limiting embodiments of the present invention, and from dependent claims outlining preferred embodiments and particularly advantageous of the invention. 10 Brief description of the drawings The invention is illustrated with reference to the following figures, provided by way of example and not limitation, where: - Figure 1 illustrates an anti-vibration module system or a related anti-vibration device for vibro-acoustic insulation, 15 applied to a civil structure. - Figure 2 illustrates one embodiment of a system an anti-vibration module according to the present invention. - Figure 3 illustrates a further embodiment of a anti-vibration module system according to the present invention. 20 - Figure 4 illustrates a further embodiment of a anti-vibration module system according to the present invention. - Figure 5 illustrates a further embodiment of a anti-vibration module system according to the present invention. - Figure 6 illustrates a further embodiment of a 25 anti-vibration module system according to the present invention. - Figure 7 illustrates a further embodiment of a anti-vibration module system according to the present invention. - Figure 8 illustrates a further embodiment of a anti-vibration module system according to the present invention. 5 - Figure 9 illustrates an embodiment of a anti-vibration device for the vibro-acoustic isolation of civil structures or industrial according to the present invention. - Figure 10 illustrates vibration isolation performance. acoustic obtainable by means of the present invention. 10 In the different figures, similar elements will be identified from similar reference numbers. Detailed description Figure 1 illustrates a 100 anti-vibration module system part of a related anti-vibration apparatus for vibration isolation 15 acoustic, which will be further described. The 100 anti-vibration module system is applied to a civil structure; in the specific and non-limiting example it is in proximity to a railway track 11 and interposed with respect to a residential structure 12. 20 The effect of the 100 anti-vibration module system is allow for vibro-acoustic insulation, reducing the extent of a first vibration 21 near the railway track 11 leaving filter a second vibration 22, of smaller magnitude, near the residential structure 12. 25 Figure 2 illustrates one embodiment of a system anti-vibration module 100. The 100 anti-vibration module system includes a 200-cash device. The case device 200 comprises an upper element 5 201 and a pair of lateral elements 202. The pair of lateral elements 202 structurally support the upper member 201, providing thus an internal cavity 203 in the case device 200. The 200 case device gives the module system anti-vibration 100 adequate structural resistance to external loads, 10 for example if the anti-vibration module system 100 is buried to reduce underground vibrations. Furthermore, the 200-capacity device, thanks in particular to the presence of the internal cavity 203, allows for sound insulation and / or sound absorption of a portion of the vibrations, also providing 15 a 'shielding' effect to the 100 anti-vibration module system. Preferably, the case device 200 comprises concrete and / or steel, especially reinforced concrete. 200 case device can also be made with a combination of several materials, for example having the pair of elements 20 lateral elements 202 in reinforced concrete, and the upper element 201 in steel sheet. In particular, the elements 201 and 202 of the case device 200 are structurally connected to each other, so that they can withstand to external stresses, both static and dynamic. 25 The case device 200 preferably comprises a structure having a cross-section substantially shaped like an inverted 'U', for example as represented. Preferably, the case device 200 has a shape elongated in one of the directions perpendicular to the plane of the Figures, 5 so that the three-dimensional geometry is an extrusion of the geometries represented in the Figures. In particular, the pair of side walls 201 has preferably an extension in depth (perpendicular to the plane of the sheet) greater than an extension in width (on the plane of the sheet) 10 of the upper element 201.For example, the case device 200 can have a height of 100 cm, a width of 48 cm, a length in depth of 200 cm. The 100 anti-vibration module system includes a resonant device 300, in particular inside the internal cavity 15 203. The resonant device 300 comprises at least one element of mass 301 and a respective at least one connecting element 302. In the example in Figure 3, there is one mass element 301 and two elements of connection 302. 20 The at least one connecting element 302 connects structurally the at least one mass element 301 to the device box 200. The at least one mass element 301 is configured to oscillate inside the internal cavity 203, under the action of a vibration 25 agent on the device at cash register 200. The resonant device 300 thus provides an absorption of vibrations, in particular due to the counterphase oscillation of the at least one mass element 301, suspended by the at least one connection element 302, with respect to the vibrations acting on the 5 cash register device 200. Preferably, the at least one mass element 301 includes concrete and / or steel and / or other metals, for example being made of reinforced concrete or being a metal weight. Preferably, the at least one connecting element 302 10 includes steel and / or plastic and / or rubber, for example being a metal rod or a rubber extrusion. In preferred embodiments, the at least one element of connection 302 comprises one or more steel rods. The one or more Steel bars have a first end constrained to at least one 15 mass element 301 and a second end constrained to the at least one 200 case device. In particular, such one or more steel bars each interpenetrates at least one element of mass 301 and a portion of the case device 200. Preferably, the at least one connecting element 302 20 structurally connects the at least one mass element 301 to the upper element 201 of the case device 200, thus providing a pendulum configuration for the resonant device 300. The pendulum configuration is particularly advantageous for the purposes of vibration absorption, in particular thanks to the oscillation in 25 counterphase of the at least one mass element 301, suspended by the at least one connecting element 302 is anchored to the element superior 201, compared to the vibrations acting on the case device 200. Preferably, the upper element 201 and / or the pair of lateral elements 202 include walls configured to prevent 5 the entry of soil and / or debris into the internal cavity 203, for example comprising substantially closed walls or with openings small dimensions, such as grilles or slots or the like. In this way, it is possible to protect the internal area of ​​the system to anti-vibration module 100, for example by preventing soil or debris 10 go to obstruct the internal cavity 203 preventing the correct oscillating movement of the at least one mass element 301. Figure 3 illustrates a further embodiment of a 100 module anti-vibration system, to be considered in addition to as described for the embodiment of Figure 2. 15 The case device 200 may further comprise a lower element 204, configured to structurally support the pair of lateral elements 202. In this way, a cavity is created internal 203 closed on four sides instead of just three, improving the protection of the resonant device 300 and the structural strength of the 20 cash register device 200. Figure 4 illustrates a further embodiment of a 100 module anti-vibration system, to be considered in addition to as described for the embodiment of Figure 3. In this embodiment, the upper member 201 is 25 made from a domed structure, that is, having an arched section. Furthermore, in this embodiment, there is a single connecting element 302 which structurally connects the sole mass element 301 to case device 200. Figure 5 illustrates a further embodiment of a 5 anti-vibration module system 100, to be considered in addition to as described for the embodiment of Figure 3. In this embodiment, there are two elements of connection 302, each of which structurally connects a respective mass element 301 to the case device 200. Therefore, in 10 In this embodiment, there are two mass elements 301 each individually suspended. Such mass elements could be aligned laterally, as in Figure, or aligned longitudinally in the direction of depth, on the perpendicular plane to the Figure. 15 Figure 6 illustrates a further embodiment of a 100 module anti-vibration system, to be considered in addition to as described for the embodiment of Figure 2. In this embodiment, the mass element 301 has substantially spherical shape. Furthermore, the connecting element 302 is 20 represented by a folded spring, preferably made of steel. Figure 7 illustrates a further embodiment of a 100 module anti-vibration system, to be considered in addition to as described for the embodiment of Figure 3. 25 In this embodiment, a plurality of elements of connection 302 structurally connect the at least one element of mass 301 to the pair of lateral elements 202 of the case device 200, providing a non-pendulum configuration for the device resonant 300, but is still suitable for absorbing vibrations, 5 in particular thanks to the counterphase oscillation of the mass element 301, suspended by the plurality of connecting elements 302, with respect to the vibrations acting on the 200 case device. Figure 8 illustrates a further embodiment of a 100 module anti-vibration system, to be considered in addition to 10 as described for the embodiment of Figure 2. In this embodiment, the at least one element of connection 302 further comprises an outer layer 304 of low modulus material, preferably polystyrene or expanded polystyrene, configured to surround and protect one or more 15 bars of 302 steel. For example, it is possible to realize the connection between the box device 200 and the resonant device 300 by means of a combination of steel bars embedded in concrete and a layer of low modulus 304 material, such as polystyrene or styrofoam 20 expanded, with the purpose of protecting the steel bars, although maintaining the freedom of oscillation of the mass element 301 thanks to to the elastic modulus of the outer layer 304 which is negligible compared to that of the 302 steel connecting element. Figure 9 illustrates one embodiment of an apparatus 25 anti-vibration 10 for the vibro-acoustic insulation of civil structures or industrial. The anti-vibration apparatus 10 comprises a plurality of 100 anti-vibration module systems, which are deployed to define a barrier structure. Such a barrier structure can be arranged to separate a 5 source of vibrations from an area to be isolated, for example as exemplified in relation to Figure 1. In fact, the 100 anti-vibration module system can be applied as a single element, on its own, or placed side by side periodic configuration with other systems of the same type in order to 10 create a 'barrier' and thus constitute an anti-vibration system 10. Preferably, the 100 anti-vibration module systems are placed side by side along the direction orthogonal to the propagation of the phenomenon vibrational, to realize the anti-vibration apparatus 10. As already described, each anti-vibration module system 15 100 comprises a pair of side walls 201 having an extension in depth greater than an extension in width of the element superior 201. In this way, as visible here, the system is provided to anti-vibration module 100 and the resulting anti-vibration apparatus 10 having predominant dimensions in a direction orthogonal to a 20 propagation of the vibration acting on the case device 200. Preferably, the 100 anti-vibration module systems can be interconnected with each other by means of assembly elements, so to increase the stiffness of the barrier in the direction orthogonal to the propagation of vibrations and therefore improve their performance 25 anti-vibration. It is also possible to equip the anti-vibration device 10 with end caps at the ends (not shown) to protect further the 300 resonant devices contained inside. Figure 10 exemplifies the vibration isolation performances. 5 acoustic obtainable by means of an anti-vibration device 10 for vibro-acoustic insulation of civil or industrial structures, comprising 100 anti-vibration module systems according to this invention. The graph, in particular, exemplifies an “Insertion Loss” or 10 “Vibration reduction” of an anti-vibration device 10 designed for a vibration absorption especially in the frequencies between 20 Hz and 50 Hz. This graph is obtained by measuring a vibration spectrum (in [Hz]) at a receiver (for example, 22 in Figure 1) and 15 calculating a reduction delta (expressed in dB) of the emitted vibrations (for example, 22 in Figure 1) with and without anti-vibration device 10. Industrial applicability The anti-vibration module system and its apparatus anti-vibration systems according to the present invention are particularly 20 effective when installed near the vibrating source, for example for example at a distance between 3 and 10 m from the source in order to intercept the vibrational phenomenon. The main reduction effect provided by the module system anti-vibration and the related anti-vibration device according to this 25 invention and provided particularly on the transmission waves surface R, also called “Rayleigh waves”. The anti-vibration module system and its apparatus anti-vibration systems according to the present invention are particularly effective in frequencies below 100 Hz, and in particular between 5 5 Hz and 80 Hz, thanks to the possibility of designing the frequency of resonance of the resonant device 300 by sizing the stiffness of the at least one connecting element 302 and the mass of the connecting element mass 301. Advantageously, the present invention allows to isolate 10 vibrations or waves, mechanical or acoustic, broad spectrum and low frequency. The anti-vibration module system and its apparatus anti-vibration systems according to the present invention are optimal in to form a periodic structure of small dimensions and characterized 15 from ultra-wide isolated frequency bands for any oriented waves in space. The anti-vibration module system and its apparatus anti-vibration systems according to the present invention can be made from materials commonly used in the civil sector, such as steel, 20 concrete and the like. These characteristics give the modular system anti-vibration according to the present invention, mechanical properties of resistance to vibrational and static loads, even over long periods. Furthermore, the anti-vibration module system according to this 25 invention can be extremely cheap to make. Among the applications of the present invention, the following are listed: public transport by rail, industrial machinery, the increase in comfort of structures adjacent to metro and tram lines, the reduction of risk of malfunction of industrial machinery 5 adjacent to other vibrating machinery or railway networks, the reduction noise pollution, for example due to vibrations in the ground coming from railway lines, or due to noise sources in general. Considering the description given here, the technician in the field 10 may devise further modifications and variations, in order to satisfy contingent and specific needs. It is clear that, where there are no technical incompatibilities evident to the technician in the field, the configurations of specific elements described with reference to certain embodiments, may be 15 used in other embodiments described herein. For example, the realization of the cash register device could be adapted according to project specifications. In particular, for example, the resonant device will be able to be designed according to the required absorption frequencies. 20 Furthermore, for example, the shape of the mass element can be any form, selected based on considerations on the available space and the overall system footprint. The embodiments described here are therefore to be These are intended to be illustrative and non-limiting examples of the invention.

Claims

1. Anti-vibration module system (100), comprising: - a case device (200), called case device (200) comprising an upper element (201) and a pair of 5 side elements (202), called pair of side elements (201) structurally supporting said upper element (201) and providing an internal cavity (203) in said case device (200); - a resonant device (300), called the device resonant (300) comprising at least one mass element (301) 10 and a respective at least one connecting element (302), wherein said at least one connecting element (302) connects structurally said at least one mass element (301) to said case device (200), and wherein said at least one element mass (301) is configured to oscillate within said cavity 15 internal (203) under the action of a vibration acting on said cash register device (200).

2. Anti-vibration module system according to the claim 1, wherein said case device (200) comprises concrete and / or steel. 20 3. Anti-vibration module system according to the claim 1 or 2, wherein said at least one mass element (301) includes concrete and / or steel and / or other metals.

4. Anti-vibration module system according to a any of claims 1 to 3, wherein said at least one 25 connecting element (302) comprises steel and / or plastic and / or eraser.

5. Anti-vibration module system according to the Claim 4, wherein said at least one connecting element (302) comprises one or more steel bars, called one or more bars 5 of steel having a first end constrained to said at least one mass element (301) and a second end constrained to said at least one cash register device (200).

6. Anti-vibration module system according to the Claim 5, wherein said at least one connecting element 10 (302) further comprises an outer layer of material low elastic modulus (304), preferably polystyrene or expanded polystyrene, configured to surround and protect said one or more steel bars.

7. Anti-vibration module system according to a 15 any of claims 1 to 6, wherein said at least one connecting element (302) structurally connects said at least one mass element (301) to said upper element (201) of said case device (200), providing a pendulum configuration for said resonant device (300). 20 8. Anti-vibration module system according to a any of claims 1 to 7, wherein said element upper (201) and / or said pair of lateral elements (202) includes walls configured to prevent the entry of soil and / or debris in said internal cavity (203). 25 9. Anti-vibration module system according to a any of claims 1 to 8, wherein said device case (200) further comprises a lower element (204) structurally supporting said pair of lateral elements (202). 5 10. Anti-vibration module system according to a any of claims 1 to 9, wherein said pair of walls lateral (201) has a greater depth extension than an extension in width of said upper element (201), so to provide said anti-vibration module system (100) having 10 predominant dimensions in a direction orthogonal to a propagation of said vibration acting on said device cash register (200).

11. Anti-vibration device (10) for vibration isolation acoustics of civil or industrial structures, called apparatus 15 anti-vibration systems (10) comprising a plurality of module systems anti-vibration (100) deployed to define a barrier structure, wherein at least one of said plurality of module systems anti-vibration is an anti-vibration module system (100) according to any of claims 1 to 10.