DE102018102579B4 - Base plate for a wagon body of a railway carriage, car body and method for producing a base plate - Google Patents

Abstract

Base plate (1) for a wagon body of a railway wagon, comprising at least one dovetail plate (3) with a plurality of mutually parallel grooves (5) and a filling layer (10), wherein the filling layer (10) is glued to the dovetail plate (3) characterized in that the filling layer (10) comprises a polymer, wherein the polymer is lignin and / or tannin, or the filling layer (10) is bitumen or asphalt.

Description

The invention relates to a bottom plate for a car body of a railway car.

Furthermore, the invention relates to a car body of a railway car comprising a bottom plate.

Finally, the invention relates to a method for producing a bottom plate.

Out GB 370 604 A For example, a floor panel for railway cars is known which comprises a steel sheet and a compressed cork granule. The steel sheet has a plurality of grooves that are parallel to each other. The cork granules are a rib-preformed plate with the ribs having a rectangular cross section and pressed into the gutters of the steel sheet.

Out JP 2008 - 213 652 A For example, a floor structure is known for a railway vehicle that includes a dovetail sheet.

FR 2 710 289 A1 relates to a composite panel for buildings.

DE 43 03 054 A1 relates to a cargo space construction for a vehicle.

The object of the invention is therefore to further develop the generic base plate such that it overcomes the disadvantages of the prior art, in particular durable and has better heat and vibration isolation.

According to the invention, a floor panel for a car body of a railroad car according to claim 1 is provided.

• - die Hinterschneidungen an jeder Seitenwand der Rinnen grösser sind als 2% in Bezug auf die Breite des Bodens der Rinnen, insbesondere grösser als 5%;
• - die Füllschicht weist eine Klebevermögen von 1,5 bis 8 MPa, insbesondere zwischen 1,5 und 4 MPa, auf;
• - die Füllschicht ein aufgeschäumtes Polymer ist;
• - die Füllschicht weist bis zu 40 Gewichtsprozent Lignin und optional Tannin, wobei in bei einem Zusatz von Tannin der Tannin-Lignin Anteil bis zu 60 Gewichtsprozent auf, wobei der Rest aus Phenol und eventuellen aus der Herstellung resultierenden Verunreinigungen besteht; und/oder
• - das Schwalbenschwanzblech aus einem nichtrostenden Stahl hergestellt ist, eine Zinkbeschichtung und/oder eine Beschichtung mit einer organischen Folie aufweist.

According to preferred embodiments, the bottom plate has the following features, which can be combined as desired, as far as is technically possible:

• - the undercuts on each side wall of the gutters are greater than 2% in relation to the width of the bottom of the gutters, in particular greater than 5%;
• - The filling layer has an adhesive capacity of 1.5 to 8 MPa, in particular between 1.5 and 4 MPa;
• - The filling layer is a foamed polymer;
• - The filling layer has up to 40 weight percent lignin and optionally tannin, wherein in addition of tannin, the tannin lignin content up to 60 weight percent, the balance of phenol and any resulting from the production of impurities; and or
• - The dovetail sheet is made of a stainless steel, having a zinc coating and / or a coating with an organic film.

Further, the invention relates to a car body of a railway car comprising a bottom plate according to one of the above embodiments, wherein the railway carriage has a longitudinal direction which is parallel to the direction of travel of the railway car, wherein the gutters of the dovetail plate are arranged parallel to the longitudinal direction.

Finally, a method according to claim 8 is provided.

• - vor dem Aufbringen der Füllschicht wird mindestens ein Rohr auf dem Schwalbenschwanzblech angeordnet.

According to preferred embodiments, the method has the following features:

• - Before applying the filling layer, at least one tube is arranged on the dovetail plate.

• 1 einen Querschnitt einer Bodenplatte gemäß einer Ausführungsform der Erfindung;
• 2 eine perspektivische Ansicht eines Schwalbenschwanzblechs der Bodenplatte; und
• 3 eine perspektivische Ansicht einer Bodenplatte gemäß einer Ausführungsform während der Herstellung.

Other aspects of the invention will become apparent from the following description in which an embodiment of the invention with reference to schematic drawings will be explained in detail. Showing:

• 1 a cross section of a bottom plate according to an embodiment of the invention;
• 2 a perspective view of a dovetail plate of the bottom plate; and
• 3 a perspective view of a bottom plate according to an embodiment during manufacture.

In the present specification, "top", "up", "top view" and "bottom" are defined with respect to the built-in bottom plate as shown in FIG 1 is shown.

1 shows a cross section of a bottom plate 1 according to an embodiment of the invention. The bottom plate 1 has a dovetail plate 3 on. The swallowtail sheet 3 includes, in plan view, a plurality of grooves 5 which are arranged parallel to each other. The cross section of the gutters 5 is essentially the same. However, in some embodiments, the cross-sections of the gutters may 5 be different. Between every two grooves 5 is a jetty 6 arranged.

The gutters 5 each have a floor 7 and two side walls 9 , The side walls 9 the gutters 5 are S-shaped. In other words, each one points gutter 5 on the side walls 9 Undercuts on.

According to one embodiment, the bottom plate 1 arranged such that the gutters 5 of the dovetail plate are arranged parallel to the direction of travel of the railway carriage in the railway carriage. For the formation of elevations and podiums, as they are necessary for high-floor areas and for different floor heights in general, the gutters can also be arranged transversely to the direction of travel.

The floor 7 the gutters 5 has a width B _R at the bottom of 25mm to 50mm, especially a width of 30mm to 40mm. The depth T of the gutters 5 is between 10mm and 20mm, especially between 12 and 18mm. The webs have a width B _s on, bigger than the width B _R the gutter 5 is. For example, the webs have a width between 30mm and 55mm, especially between 35mm and 45mm. The distance A between the bars 6 is smaller than the width B _R the gutters. For example, the distance A between the webs 6 between 15 and 40mm, especially between 20mm and 35mm. For example, the undercuts on each sidewall is between 5% and 15% of the width B _R of the soil 7 the gutters 5 , The depth T is smaller than the width B _R on the ground.

In one embodiment, the dovetail sheet is 3 corrosion resistant. For example, the dovetail plate 3 be made of a stainless steel. The swallowtail sheet 3 may also or alternatively have a zinc coating and / or a coating with an organic film.

On the dovetail sheet 3 is a filling layer 10 arranged. The filler layer is applied in liquid form, as explained below, and subsequently cured. As the filling layer, various materials are used.

For example, a foamed polymer, in particular with wood-derived polymers can be used. Such a polymer is, for example, lignin and / or tannin. According to some embodiments, the filler layer may be a lignin and / or tannin mixed phenoplast. In other words, the lignin and / or tannin is mixed with a phenolic resin.

In one embodiment, the compressive strength of the filler layer is at least 25N / mm ² . For example, the tear resistance of the filling layer is greater than 1.5 N / mm ² . The proportions of tannin and / or lignin admixed with the phenoplast must be adjusted in batches since the natural substances tannin and lignin would give a very varying compressive strength. This variation is due to the property variation of natural products. This variation can be made uniform by suitable mixing ratios.

In one embodiment, the filler layer comprises up to 40 weight percent lignin and optionally tannin, and with tannin added, the tannin lignin portion may be up to 60 weight percent with the remainder being phenol and any resulting impurities. Additional adhesion promoters and foaming agents are among these resulting impurities.

In another embodiment, the filler layer comprises up to 60% by weight of tannin with the remainder being phenol and any resulting impurities.

For example, the filling layer can be produced with a linseed-based foam system. A further embodiment comprises the filler layer having a linseed oil-based fraction of up to 85% by weight, the remainder being phenol and any impurities resulting from the production. Additional adhesion promoters and foaming agents are among these resulting impurities.

In a further embodiment, the filling layer is a polyurethane foam. Suitable adhesion promoters are silanes and siloxanes.

Foaming of all filler variants involves chemical or physical foaming processes.

Propellant for foaming the phenolic resin-based filler layer mixture may be, for example, pentane or particularly advantageously methylene chloride having a boiling point of -24 ° C.

Foaming of the polyurethane foam can be effected by water-based foaming agents or by formic acid-based foaming agents.

In other embodiments, mechanically added blowing agents, such as azo compounds or N-nitroso compounds can be used.

For the phenolic resin-based filler layers and propellant gases from the cleavage during crosslinking come into question.

In general, chemical blowing processes, namely a) chemical decomposition with formation of the propellant gas from the decomposition of the blowing agent (baking powder effect) and b) chemical reaction with propellant gas from chemical reaction of the raw materials are conceivable.

The foams obtained by foaming can be divided into open and closed foams.

An education with locally different foaming degree (volume weight) is called structural foam. In one embodiment, the foaming degree (density) is variable over the filler height. In particular, the filling layer is formed at the contact point to the dovetail plates and / or at the top of closed-cell foam, in particular to form pressure-resistant edge layers.

The filling layer is, for example, an adhesive layer and thus has a self-adhesive capacity. In other words, the filling layer combines 10 with the dovetail plate 3 , Thus, the filling layer may have an adhesive capacity of 1.5 to 8 MPa, in particular between 1.5 and 4 MPa.

According to one embodiment, the foamed polymer filling layer has an adhesion of 4 to 6 MPa, in some cases up to 10 MPa.

A filler layer of bitumen or bituminous materials such as asphalt has an adhesive capacity of approximately 2.1 MPa. Suitable adhesion promoters are bituminous tar replacement products.

A polymer modified bitumen has an adhesion of between 1.5 to 6 MPa. Addition of the polypropylene gives an APP (amorphous polypropylene) or plastomer bitumen, by adding styrene-butadiene-styrene, an (SBS) or elastomer bitumen. Further, ethylene-propylene-diene rubbers (abbreviation EPDM, ethylene-propylene-diene, M group), ethylene-vinyl acetate copolymers (abbreviation EVAC, formerly EVA), and also acrylate rubber (ACM) are used. As an additive for the bitumen, an isotactic polypropylene (IPP) and / or amorphous poly-alpha-olefin copolymer (APAO) can also be used.

In the case of asphalt, bitumen and polymer-modified bitumen, adhesives can be used to increase the adhesive power, in particular to double it. As adhesion promoters come bituminous substances in question.

According to one embodiment, the filling layer has a thermal conductivity of 0.02 to 0.16 W / (mK), in particular a thermal conductivity of 0.02 to 0.04 W / (mK). For example, asphalt / bitumen has a thermal conductivity of 0.16 W / (mK), polymer-modified bitumen has a thermal conductivity of 0.2-0.4 W / (mK), unfoamed polymers have a thermal conductivity of 0.2-0.4 W / ( mK), foamed polymers have a thermal conductivity of 0.02 to 0.04 W / (mK), depending on the density, and cork has a thermal conductivity of 0.03 to 0.05 W / (mK).

According to the invention, the dovetail plate is stiffened by the filling layer bonded to the dovetail plate.

3 shows a perspective view of a bottom plate according to an embodiment during manufacture. For example, before the fill layer 10 on the dovetail sheet 3 is applied, at least one pipe 12 be arranged on the dovetail plate. The pipe 12 can be used to transport liquids. In other embodiments, the tube is provided for routing cables. According to one embodiment, the tube lies on the webs 6 of the dovetail plate 3 ,

The features of the invention disclosed in the foregoing description, in the claims and in the drawings may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims (9)

Bottom plate (1) for a car body of a railway car comprising at least one dovetail plate (3) having a plurality of mutually parallel grooves (5) and a filling layer (10), wherein the filler layer (10) is glued to the dovetail plate (3), characterized characterized in that the filling layer (10) comprises a polymer, wherein the polymer is lignin and / or tannin, or the filling layer (10) is bitumen or asphalt. Bottom plate after Claim 1 , wherein the undercuts on each side wall (9) of the grooves (5) are greater than 2% with respect to the width (B _R ) of the bottom (7) of the grooves (5), in particular greater than 5%. Base plate according to one of the preceding claims, wherein the filling layer (10) has an adhesive capacity of 1.5 to 8 MPa, in particular between 1.5 and 4 MPa. Base plate according to one of the preceding claims, wherein the filling layer (10) is a foamed polymer. Base plate according to one of the preceding claims, wherein the filling layer (10) up to 40 weight percent lignin and optionally tannin, wherein in an addition of tannin the tannin lignin content up to 60 weight percent, the balance of phenol and possibly from the production resulting impurities. Base plate according to one of the preceding claims, wherein the dovetail plate (3) is made of a stainless steel, has a zinc coating and / or a coating with an organic film. Car body of a railway car comprising a floor panel (1) according to any one of the preceding claims, wherein the railway carriage has a longitudinal direction which is parallel to the direction of travel, wherein in particular the grooves (5) of the dovetail plate (3) are arranged parallel to the longitudinal direction. Method for producing a base plate (1), in particular according to one of the preceding Claims 1 to 6 comprising providing a dovetail plate (3), and applying a filling layer (10) on the dovetail plate (3), wherein the filling layer (10) is glued to the dovetail plate (3), characterized in that the filling layer (10) comprises a polymer wherein the polymer is lignin and / or tannin or the filler layer (10) is bitumen or asphalt. Method according to Claim 8 wherein at least one tube (12) is arranged on the dovetail plate (3) before applying the filling layer (10).

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