RU2745657C1 - Flexible soundproof fence - Google Patents

Abstract

FIELD: anti-noise screens.

SUBSTANCE: invention relates to noise canceling screens. The flexible screen is a multi-layer structure - the outer layers of the fence are made of a set of plates of polymer materials, upper and lower, in the form of separate geometric shapes, for example, rectangular. The shape of the plates has been chosen to ensure gap bridging. At the same time, a cutout is made in the upper plates, which provides flexibility of the fence and, "transforming" in the process of operation, ensures a constant overlap of the gap between the lower plates to the middle layer, which is represented by a flexible material, for example, from carbon or basalt fabric. The outer plates are fixed with screws with a flexible intermediate layer on a carrier mesh, for example made of fiberglass. Vertical support posts made of square pipes have molded projections with holes for fasteners. The uprights are made of polymer composite materials (for example, glass and carbon fiber reinforced plastics) and are filled with sound-insulating foam inside to avoid loss of sound insulation. In the lower part of the rack, there is a flange with reinforcing ribs for fastening to the foundation.

EFFECT: technical result is an increase in strength, durability, manufacturability, ease of transportation, installation and maintenance.

1 cl, 5 dwg

Description

The invention relates to industrial and architectural acoustics, in particular to broadband noise suppression, and can be used as a building envelope / noise shield along highways and railways, construction sites and other sources of noise near settlements. It is also possible to use it as part of soundproofing devices used in air and ground transport systems.

An analogue of the proposed invention in terms of design characteristics is the utility model "Soundproof Panel" (patent RU 194873, IPC B60R 13/08, G10K 11/16, publ. 12/26/2019, bull. No. 36). The design of the panel described in the patent is a multi-layer barrier. On the supporting element - a steel metal mesh, metal plates are attached on both sides with a certain gap to ensure the flexibility of the product. Fastening is carried out with screws through a gasket made of flexible material - basalt fabric. The outer layers consist of lower and upper steel plates in the form of separate geometrical figures, for example, rectangular, while the rectangular plates are made with the possibility of overlapping the gap. The upper plates have a cutout equal to half the thickness of the plate, which provides flexibility of the panel and, "transforming" in the process of operation, provides a constant overlap of the gap between the lower plates to the middle layer, represented by flexible material. The number of gaps depends on the length of the plates and the size of the panel.

The use of such panels near highways and railways is not advisable due to the use of expensive metal elements. After the end of the service life of the panels, dismantling, disassembly and disposal of flexible material is required, which is a complex and time-consuming process.

The closest technical solution (prototype) used to reduce the noise level near highways and railways is the Kochetov acoustic screen (patent RU 2528357 C1, IPC E04B 1/84, publ. 09/10/2014, Bul. 25).

In the acoustic screen, consisting of a frame and an acoustic canvas, the frame is made in the form of support posts and horizontal profiles on which acoustic panels are attached, which can be both noise-reflecting translucent and opaque noise-absorbing, and their arrangement in the acoustic screen can be in any combination vertical and horizontal rows. Each of the opaque sound-absorbing acoustic panels is made in the form of rigid and perforated walls, between which layers of sound-reflecting and sound-absorbing materials of different densities are located. This screen is a collapsible structure consisting of support posts and an acoustic sheet, consisting of horizontal profiles and acoustic panels, which are installed in horizontal profiles during installation, which, in turn, are installed and fixed in a vertical groove of the support post that is adjustable in width.

The disadvantages of an acoustic baffle are the complexity of installation and maintenance due to the layout of the finished product parts. With a vertical arrangement, the layers of sound-absorbing material undergo deformation over time in the area of the fasteners and along the entire length, as a result of which the elements are displaced, leading to a decrease in the efficiency of noise absorption.

The objective of the claimed invention is to propose a soundproofing fence that provides effective protection against noise from highways and railways near settlements.

This technical result is achieved by the fact that the soundproofing fence with a multilayer flexible screen is a collapsible structure, the outer layers of which are made by a set of upper and lower plates of polymeric materials, between which there is an intermediate layer of several layers of fabric, which is flexible and which is connected to plates and a fiberglass mesh using screws, the upper and lower plates are made in the form of separate geometric figures of a rectangular shape, while the rectangular plates are made with the possibility of overlapping the gap.

FIG. 1 shows a three-dimensional model of the rack.

FIG. 2 shows the assembled three-dimensional model of the fence.

FIG. 3 shows a view of the panel from the side of the upper plates.

FIG. 4 shows a view of the panel from the side of the lower plates.

FIG. 5 is a side view.

The soundproofing fence is a square-shaped barrier that is flexible and can be rolled into a roll, which ensures ease of installation and transportation of finished products. A set of square screens (n × n plates) in the required number is fixed on vertical support posts made of square pipes with molded projections with holes for fasteners (Fig. 1). The vertical support legs are made of polymer composite materials (for example, glass and carbon fiber reinforced plastics) and are filled with soundproofing foam inside to eliminate sound insulation losses. At the bottom of the rack, there is a flange with reinforcement ribs for fastening to the foundation. The dimensions of the racks do not exceed 3 meters in height per segment. This condition makes it possible to use any truck of a cargo class for the transportation of segments, and also provides the possibility of assembling the finished product without the involvement of special equipment.

The outer layers of the fence are made of a set of plates made of polymer materials, upper (Fig. 3) and lower (Fig. 4), between which there is a flexible intermediate layer, which is fixed by screws with polymer plates on a supporting mesh located between them and made, for example, of fiberglass ( Fig. 5). The upper and lower plates are made in the form of separate geometrical figures of a rectangular shape with the possibility of overlapping the gap. At the same time, a cutout is made in the upper plates, which ensures the flexibility of the fence and, "transforming" in the process of operation, ensures a constant overlap of the gap between the lower plates to the intermediate layer.

Thus, the collapsible design has high strength, wear resistance, manufacturability, ease of transportation, installation and maintenance. High strength, resistance to aggressive media, wind load and wear resistance is achieved by the choice of polymer materials. Depending on the technical assignment, it is possible to use non-combustible materials as part of the fence.

Claims (1)

A collapsible soundproofing fence, consisting of flexible screens and vertical support posts with a square section, on which flexible screens are attached, which is a multi-layer structure - the outer layers of the fence are made by a set of plates of polymer materials, upper and lower in the form of separate geometric shapes, for example, rectangular, while the rectangular plates are made with the possibility of overlapping the gap, for this, a cutout is made in the upper plates, which provides the flexibility of the fence and, "transforming" in the process of operation, provides a constant overlap of the gap between the lower plates to the middle layer of several layers of fabric, the outer plates with a flexible intermediate layer are fixed to a support mesh, for example made of fiberglass.

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