CS260826B1 - Thermal and noise insulation of a public transport box, in particular a railway wagon for passenger transport - Google Patents

Abstract

of a means of transport, especially a railway carriage for passenger transport, "made up of layers of rigid lightweight material and fibrous material, with the roof consisting of rigid lightweight material shaped pieces placed on the inside of the roof sheet, which are secured by hoops of rigid lightweight material, pushed onto the rings, in the walls then by a layer of rigid lightweight material placed on the inside of the covering sheet to the height of the body frame beam and covered with fibrous material, with rigid lightweight material boards placed on the sheet metal floor, supplemented to the height of the battens. wooden floors with fibrous material.

Description

The subject matter of the invention is the thermal and noise insulation of a passenger rail car body composed of layers of rigid cellular materials and fibrous materials.

The thermal and noise insulation of passenger railroad wagons is generally designed in such a way that the walls between the outer metal coating and the inner lining are filled with materials β of low thermal conductivity and preferably good noise absorption. of inorganic origin. The disadvantage of these materials is their absorbency, which cannot be fully suppressed even by packing them in plastic foils. This is because the condensation zone extends inside the vehicle wall, that is to say inside the fiber mat. The condensate formed on the inner surface of the metal casing of the casing flows into the floor space on the fiber insulation mats. The described phenomenon both deteriorates the insulation and also leads to a strong corrosive attack on the metal structure of the cabinet. Therefore, solid lightweight materials which are impermeable to water vapor and non-moisture-proof are also suitable for insulation. Plates of these materials, suitably adhered to the metal casing of the casing, are capable of largely forming a vapor barrier. Their disadvantage, however, is the substantially less acoustic absorption, which results in worse acoustic conditions in the wagon. Special insulating boards composed of layers of paper or plastic sheets are also known. Their production and use, however, may have limited expansion. They are generally not able to create a vapor barrier. The disadvantage of organic materials is their flammability.

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The above-mentioned disadvantages are solved by the thermal and acoustic insulation according to the invention, which consists of a combination of layers of a rigid cellular material, for example foamed polystyrene and layers of a fibrous material, for example glass or mineral fiber mats. lightweight materials applied from the inside to the roof sheet, which are secured by hoops of solid lightweight material, pushed onto the circles, in the walls then a layer of solid lightweight material laid on the inside of the cladding sheet into the beams boards made of rigid lightweight material, supplemented to the height of the crosspieces of the wooden floor with a fibrous mass.

The thermal and acoustic insulation according to the invention is well suited to the thermal and acoustic insulation requirements of the rail car body, since the proportion of acoustically advantageous fibrous insulating materials is distributed in the body depending on the sound pressure distribution outside the car body which is largest in the floor area. it fades up and is the weakest in the roof area. In the region of the condensation zone, i.e. especially in the outer half of the wall thickness, a non-wetting rigid cellular material is used, which can advantageously be adhered to the outer casing sheet, thereby creating a vapor barrier and thus substantially reducing condensate formation. The fibrous insulating material is only deposited on the dry and warm surface of the rigid cellular mass and can therefore not be spoiled by moisture.

The thermal and noise insulation of the passenger rail car body according to the invention is shown in the accompanying drawings.

FIG. 1 shows the principal composition of the thermal and acoustic insulation layers shown in the cross-section of the wagon body, and in the other figures, a specific embodiment of the insulation.

Fig. 2 is a longitudinal section of the roof insulation at the point of the circle.

Fig. 3 is a longitudinal horizontal section of the wagon wall; and Fig. 4 is a transverse vertical section of the wagon floor insulation.

260 82β

The thermal and acoustic insulation consists of a layer of solid lightweight material 3 and a layer of fibrous material 2, wherein in the roof the solid lightweight fittings 9 are placed from the inside on the roof sheet 6 and secured by solid lightweight hoops 7 slid onto circles. The solid lightweight layer 10 is placed on the inside of the covering sheet 4 up to the height of the casing frame beams 8 and covered by the fibrous mass 2. On the sheet metal floor 3 there are laid the solid lightweight boards 11, supplemented to the height of the wood floor.

Claims (1)

SUBJECT OF THE INVENTION Thermal and acoustic insulation of a mass transport vehicle body, in particular a passenger rail car, consisting of layers of solid lightweight and fibrous material, characterized in that in the roof it is formed by shaped lightweight fittings (9) applied from the inside to the roofing sheet (6). ) and secured rims (7) of solid lightweight material pushed onto the circles (5) in the walls with a layer (10) of solid lightweight material placed on the inside of the cladding sheet (4) up to beams (8) (2), while on the sheet metal floor (3) there are laid plates (11) of rigid lightweight material, supplemented to the height of the logs (12) of the wood floor with the fibrous material (2).