Track soundproofing arrangement

A noise control, flat panel technology, applied in tracks, roads, buildings, etc., can solve problems such as damage to the sound-absorbing layer, destruction of the noise reduction effect, and insufficient noise reduction.

Inactive Publication Date: 2008-10-08
GMUNDNER FERTIGTEILE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a mineral wool panel does sufficiently dampen sound at high frequencies, but not sufficiently at low frequencies
In addition, this structure has the disadvantage that under high and repeated loads, the perforated layer through which the wire mesh can pass is separated from the part to which it is fixed, so that the sound-absorbing layer arranged below it will be damaged.
Moreover, dust will pass through the perforated layer and accumulate on the sound-absorbing layer, thereby greatly destroying the sound-absorbing effect

Method used

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Examples

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Embodiment Construction

[0037] exist figure 1 and figure 2 In the track 1 shown, the sound-absorbing panels 3 are placed adjacently between the rails along the longitudinal direction of the track. On its two sides extending along the rail 2, the generally rectangular flat plate 3 comprises protruding support flanges 4 which are supported between the undersides of the rail seat 6, the web 7 and the head 8 of the rail 2 , into which is inserted an elastic member 5 made, for example, of rubber or synthetic rubber. The surface of plate 3 is as Figure 4 As shown in the enlarged view of , the plate 3 is composed of porous building material particles 9 bound together by a suitable binder. Such lightweight construction materials may use, for example, synthetic material granules, granular or spherical burnt aluminum granules, natural or man-made burnt materials like granulated slag, which are precisely joined together by a suitable artificial binder or cement, This leaves small gaps or channels 10 throu...

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PUM

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Abstract

A noise control device for tracks (1) comprising sound-absorbing slabs (3) mounted at the rails (2) of the track (1), the slabs being supported on the rails (2) via elastic sections (5) and self-supportingly bridging the space between the rails (2). To improve silencing of the slabs (3) it is provided for the slabs (3) to be comprised of particles (9) of porous lightweight building material, which are combined by a binder. The slabs (3) have an embedded reinforcement (11). Advantageously, also silencing cavity resonators (14) are formed in the slabs (3). A special embodiment provides for the space between the rails (2) of a track to be bridged by slab parts (3a, 3b) arranged in pairs which are supported on each other at their rims (26, 27) facing each other.

Description

technical field [0001] The invention relates to a track noise control device, which is composed of a sound-absorbing flat plate installed on the rails of the track. The flat plate is supported on the rail by elastic components. Furthermore, the present invention relates to a sound-absorbing panel of such a noise control device. Background technique [0002] In a noise control device of the above type disclosed in DE3602313A1, the flat plate arranged between the rails of the track comprises three laminates or sheets supported by elastic members on the underside of the rail seat, the web and the rail head. The upper layer consists of a penetrable steel mesh whose edges are glued, welded or hard pressed into this part. The middle layer forms a sound-absorbing layer and is composed of glass wool or asbestos. The sound-absorbing layer is positioned above the lower layer, which is a perforated wall or grille, and is supported in a recess of the part in the rail seating area. Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B19/00
CPCE01B19/003
Inventor 博恩哈德·诺伊曼
Owner GMUNDNER FERTIGTEILE & CO
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