EP3121090B1 - Pneumatic spring assembly for railway vehicle and railway vehicle with pneumatic spring assembly - Google Patents

Description

Technical area

The invention relates to an air spring arrangement for the suspension of a rail vehicle, in particular the invention relates to an air spring arrangement for a secondary suspension between the vehicle body and bogie of a rail vehicle.

Prior art

A rail vehicle is usually sprung in various ways to increase safety and comfort. For a high level of comfort and a high level of acceptance of rail transport among passengers and train drivers, primary suspension and secondary suspension are usually provided. The suspension between the wheelsets and the bogie is taken over by the primary suspension. The primary suspension is usually realized by leaf springs, but also by coil springs or rubber springs.

The secondary suspension is used for the suspension between bogie and car body. This also coil springs, but increasingly air springs are used. A secondary suspension for a bogie may include, for example, two air springs. In the case of a Jacob bogie, the secondary suspension of the Jacob bogie may also include four air springs.

The secondary suspension usually has so-called additional volumes, which are connected via connecting lines with the actual air spring volume. When connecting one additional air volume to one air spring, two additional air tanks and corresponding supply lines are used. These additional air volumes serve to increase the compressible air volume of the air springs and thus increase the flexibility of the air spring.

In the EP 0 568 043 B1 For example, a bogie for rail vehicles with primary and secondary suspension is described. The secondary suspension is designed as an air suspension, wherein the air springs are designed as Torusbälge, which are connected via lines with two separate additional volumes. Between the Torusbälgen and the additional volumes three-way valves are arranged.

The EP 1 610 995 B1 describes a chassis for a rail vehicle with a wheelset. The rail vehicle has a chassis frame supported by a primary suspension on the wheel set and a secondary suspension for supporting a car body on the chassis frame. In addition, the rail vehicle is equipped with a transverse suspension, wherein the transverse suspension is arranged above the secondary suspension and below the floor of the car body.

The EP 0 100 513 A2 describes a primary suspension for vehicle wheels, especially for individually sprung wheels, wherein two primary pressure medium suspension are connected via a pressure medium line via a controllable shut-off valve, and one of the pressure medium lines via a line and a switching valve is connected to a pressure fluid reservoir. The JP H 06 17867 A describes an air suspension with two air springs, which are connected via lines to a tank, which is divided by a movable partition into two independent areas.

Disadvantages of the prior art

The above solutions require a double design of the air spring arrangement in terms of additional air volumes. However, this causes an increased mass and an increased space requirement. The increased mass has a negative effect on the energy required to operate the rail vehicle, while the increased space requirement can mean difficulties in accommodating the air spring arrangement or other components of the rail vehicle.

problem

It is therefore an object of the present invention to provide an air spring arrangement for a secondary suspension of a rail vehicle, which reduces the system mass and the space requirement.

Inventive solution

This object is achieved by an air spring arrangement according to claim 1, a rail vehicle according to claim 12 and a method for connecting additional air volumes to air springs according to claim 14. Further embodiments, Modifications and improvements will become apparent from the following description and appended claims.

According to one embodiment, an air suspension arrangement for secondary air suspension is provided between the vehicle body and the bogie of a rail vehicle. The air spring arrangement comprises a first connecting line for connecting a first air spring with a compressed air volume and a second connecting line for connecting a second air spring with a compressed air volume. The air spring assembly also includes a compressed air reservoir that provides a single compressed air volume, with both the first connection line and the second connection line communicating with the one compressed air volume. The single compressed air volume forms a common additional air volume for the two air springs. The compressed air tank is typically fastened to the car body or to the bogie of a rail vehicle. In particular, the compressed air tank on the car body or on the bogie of a rail vehicle is replaceable fastened.

The air spring arrangement according to embodiments of the invention allows by combining both air springs with a common compressed air volume of a compressed air tank, a reduction in the mass of the supply arrangement for the air springs. Instead of providing two separate compressed air tanks and two separate additional air volumes for increasing the compressible air volume, a compressed air tank with only one additional air volume is now provided. In particular, in the case of a substantially cylindrical configuration of the compressed air tank, the ratio of volume to surface is advantageous here, in particular in the case of a larger embodiment of the compressed air tank in comparison to previous compressed air tanks. A reduced mass saves not only material costs, but also energy costs during operation of the rail vehicle.

Another advantage of the air spring assembly described herein is the reduced space requirement. The one compressed air tank, which provides the additional air volume for both springs takes up less space than two separate containers. A reduced space requirement allows a more favorable positioning of the container in the Railway vehicle, in particular with regard to the position of the air springs. The more favorable positioning can in turn allow a shortening of the connecting lines. Shorter interconnections additionally help reduce the mass of the umbilical. The design of the connecting lines between the compressed air tank and air springs can in some embodiments have a symmetrical structure result, which in turn positively affects the manufacturing cost. The (in particular replaceable) attachment of the compressed air tank on the car body or on the bogie allows easy replacement of the compressed air tank, for example with a new compressed air tank during maintenance, or with a compressed air tank having a plurality of compressed air volumes.

According to one embodiment, the first connection line and the second connection line are in fluid communication with each other. In particular, in one embodiment, the first connection line and the second connection line may be in fluid communication via an orifice or control valve for controlling the flow of air between the first connection line and the second connection line. As a result, further control parameters for the compressed air flow to the air springs can be introduced. In addition, a control valve can be controlled easily, reliably and quickly. In addition, regardless of the compressed air tank used, the conduits thus configured can continue to be used, even if, for example, a compressed air tank is used which provides an additional damping function.

The above-described "fluidic connection" can be realized for example by a compensation line. In one embodiment, the compensation line may have a reduced diameter and thus at the same time act as a throttle between the first and the second air spring. Alternatively or additionally, a diaphragm or a control valve can be provided.

The compressed air tank may, in one example, have a first connection for connecting the first connection line to the compressed air volume and a second connection for connecting the second connection line to the compressed air volume. Both connections can be on the same side of the compressed air tank be arranged. Thus, both connection lines can be provided on one side of the container, resulting in a simpler positioning and assembly of the compressed air tank and the two connecting lines. Also, shorter connections can be realized with the connections on one side of the compressed air tank. Such a container is much easier and better position than two separate containers.

According to one embodiment of the air spring arrangement described herein, the compressed air tank on two dished ends, wherein the first connection for the first connection line and the second connection for the second supply arrangement may be connected to the same dished bottom with the compressed air tank. In addition to the above-mentioned advantages of the arrangement of the two connections on one side of the compressed air tank, the design can save manufacturing costs by means of dished bottom, since one of the dished ends can be easily adjusted before assembling the compressed air tank.

The first connection line and the second connection line can be in fluid communication with each other via a control or throttle valve. Both connecting lines may further have a direct connection to the compressed air volume, i. There is a separate fluidic connection between the common compressed air volume and the first connecting line on the one hand and between the common compressed air volume and the second connecting line on the other hand, each of which does not include the control or throttle valve. In this case, the compressed air tank has its own connection for each connecting line. The fluidic connection between the two connecting lines via the control or throttle valve thus represents a bypass for the compressed air, which thus directly, partially or completely depending on the position of the control or throttle valve, between the two air springs can flow via the two connecting lines , The control or throttle valve is not mandatory, but only optional.

Alternatively, the compressed air tank can also have only one connection for both connecting lines.

According to one embodiment, the compressed air tank has a circular cylindrical shape with an outer diameter D, wherein at least one of the two front ends of the compressed air tank is formed by a dished bottom. A first connection for connecting the first connecting line to the compressed air volume and a second connection for connecting the second connecting line to the compressed air volume are arranged on the dished bottom in a region with a radius of 0.4 × D about a longitudinal axis of the compressed air tank. In this case, the first and second ports may have the same or a different distance to the longitudinal axis of the compressed air tank. The position of the connections on the dished bottom can be freely selected in the range with a radius of at least 0.4 x D. As a result, a placement of the container is even more variable.

In a further embodiment, a two-point control of the air springs is realized with the air spring arrangement. The two-point control provides reliable and adequate control of the air springs of the secondary suspension of the rail vehicle, while at the same time the simple and less complex control saves costs and maintenance.

In another example, the air spring arrangement can have one or more further connecting lines, wherein the further connecting line (s) is / are connected to the compressed air volume of the compressed air tank. Thus, for example, three or four air springs (for example, four air springs for a JakobsdrehgestelI) are connected to the one compressed air volume. This simplifies the design of more complex secondary springs and reduces both the overall mass of the secondary suspension system and the required installation space.

In one embodiment, the compressed air tank of an air spring arrangement has a fastening element in order to be able to attach the compressed air tank to a rail vehicle, in particular to a car body or a bogie of a rail vehicle. In an example, the fastener may be a strap, a loop, a notch, a strap, or the like.

According to embodiments of the air spring assembly described herein symmetrical spring pressures in the first air spring and in the second air spring are possible, wherein the symmetrical connection of the additional air volume for both air springs is realized by the air spring assembly described herein without complex control and in a simple manner.

In one embodiment, the compressed air tank has a receptacle in the interior of the compressed air tank, which can receive a partition wall within the compressed air tank for separating two volumes. By providing a receptacle, the air spring assembly can be quickly and easily converted to provide more than one volume of air. For example, a separation of two volumes for two connecting lines can influence additional control parameters for the air suspension. In a simultaneous fluid connection between the connecting lines and a damping of the roll of the car body can be realized. The receptacle for a partition can have guides, recordings, seals and the like.

In a further embodiment of the air spring arrangement, the first connecting line and the second connecting line have a common access to the compressed air volume. This embodiment is advantageous on the one hand with respect to the installation situation, since only one connection for both connecting lines has to be taken into account during assembly. On the other hand, this is advantageous in terms of flexibility, since only one connection for both connecting lines allows easy and uncomplicated replacement of either the compressed air tank or the connecting lines.

According to one embodiment, a rail vehicle with a secondary suspension between the bogie and the car body of the rail vehicle is provided, wherein the secondary suspension per bogie has a first air spring and a second air spring. The rail vehicle also has a receptacle for an air spring arrangement according to embodiments described herein. In particular, the rail vehicle may have a receptacle for the compressed air tank of the air spring arrangement. In one example, the recording allow attachment of the compressed air tank of the air spring assembly on the car body or on the bogie of the rail vehicle. For example, the rail vehicle may take up the accommodation in the form of a formation (eg a corresponding installation space or a trained gap), a fastening device (eg in the form of fastening or tension bands, fastening or tension clamps, screw connections and the like), and / or a complementary structure provide. In one embodiment, a rail vehicle is provided with an air spring assembly.

In a further embodiment, a method for connecting an additional air volume to air springs of a secondary suspension between the vehicle body and bogie of a rail vehicle is provided. The method comprises providing a first compressed air connection between a compressed air volume of a compressed air tank and a first air spring of a secondary suspension, and providing a second compressed air connection between the same compressed air volume of the same compressed air tank and a second air spring of the secondary suspension. Furthermore, the method comprises connecting the first compressed air connection and the second compressed air connection with the compressed air tank. According to one embodiment, providing the first connection line and the second connection line comprises connecting the first connection line and the second connection line to the compressed air tank on the same side of the compressed air tank.

The described air spring arrangement according to embodiments of the invention can be used in all rail vehicles with a secondary suspension, but also in other vehicles.

characters

• Figur 1 zeigt eine Luftfederanordnung mit zwei Luftfedern gemäß einer hierin beschriebenen Ausführungsform.
• Figur 2 zeigt eine Luftfederanordnung mit zwei Luftfedern gemäß einer weiteren, hierin beschriebenen Ausführungsform.
• Figur 3a zeigt eine Seitenansicht eines Druckluftbehälters für eine Luftfederanordnung gemäß hierin beschriebenen Ausführungsformen.
• Figur 3b zeigt eine Vorderansicht des Druckluftbehälters aus Figur 3a.
• Figur 3c zeigt eine Detailansicht des Druckluftbehälters aus Figur 3a.
• Figur 4a zeigt eine Seitenansicht einer Luftfederanordnung nach Ausführungsformen der Erfindung.
• Figur 4b zeigt eine Sicht von oben und von der Seite auf die Luftfederanordnung aus Figur 4a.

The accompanying drawings illustrate embodiments and, together with the description, serve to explain the principles of the invention. The elements of the drawings are relative to one another and not necessarily to scale. Like reference numerals designate corresponding parts accordingly.

• FIG. 1 shows an air spring assembly with two air springs according to an embodiment described herein.
• FIG. 2 shows an air spring assembly with two air springs according to another embodiment described herein.
• FIG. 3a shows a side view of a compressed air tank for an air spring assembly according to embodiments described herein.
• FIG. 3b shows a front view of the compressed air tank FIG. 3a ,
• Figure 3c shows a detailed view of the compressed air tank FIG. 3a ,
• FIG. 4a shows a side view of an air spring assembly according to embodiments of the invention.
• FIG. 4b shows a view from above and from the side of the air spring assembly FIG. 4a ,

embodiments

FIG. 1 shows a schematic drawing of an arrangement for supplying two air springs 131, 132 of a secondary suspension of a rail vehicle. Typically, the secondary suspension is arranged between the car body and the bogie of a rail vehicle. The air springs 131, 132 are connected to an additional air volume 111 in a compressed air tank 110. For this purpose, the first air spring 131 is connected by a first connecting line 121 to the compressed air tank 110 and the second air spring 132 by a second connecting line 122 to the same compressed air tank 110. The compressed air tank 110 has a single compressed air volume 111, with which the two air springs are connected. According to embodiments of the invention, the compressed air tank meets the safety requirements for pressures from 0 bar (MPa) to about 10 bar (1.0 MPa). and is equipped accordingly, for example by a suitable wall thickness, the choice of a suitable material, a suitable attachment of the individual parts of the container and the like.

One skilled in the art will understand that the term "a single compressed air volume" of the compressed air tank refers to a volume (for example, an additional air volume) for connection to an air spring. Subdivisions in the container, which serve, for example, the filling, the pressure equalization, the stabilization of the container or the like, are not to be understood in the context of this application as "compressed air volume".

The air spring assembly 100 has a port 141 to the compressed air tank 110 to establish the connection between the compressed air tank 110 and the connecting line 121. The second connection line 122 is connected by means of connection 142 to the compressed air tank. FIG. 1 shows that both connecting lines are connected to one side of the compressed air tank 110. This is particularly favorable in terms of installation space, since the connecting lines can be made relatively short.

The connecting lines 121 and 122 are also in fluid communication with each other, ie in a connection that allows the exchange of fluids between the two connecting lines. In the in FIG. 1 In the example shown, the connecting pipes 121, 122 are connected to each other and to the compressed air tank by a type of double tee, the double tee containing a shutter. As will be described in detail later, the connection between the connection lines, but also the connection lines themselves, can contain orifice or a control valve for regulating the air flow in the connection lines.

FIG. 2 shows a further embodiment of the inventive air spring assembly 100. As in the FIG. 1 Here, too, two air springs 131, 132 are connected to two connecting lines 121, 122. The connecting lines 121, 122 are in turn connected to a compressed air tank 110 in order to be able to supply compressed air to the air springs 131, 132.

In the in FIG. 2 As shown, the two connecting lines 121, 122 have a common connection 140 to the compressed air tank. This can be realized for example by a simple T-piece between the connecting lines 121, 122 become. The common port 140 increases flexibility, since the space required for the compressed air tank does not depend on whether two ports find space. Also, this simplifies the assembly and maintenance work, since a connection, or replacement of either the connecting lines or the compressed air tank can be done by a single connection step.

FIG. 3a shows a side view of a compressed air tank 110 for an air spring assembly 100, as shown for example in the Figures 1 and 2 was shown. The compressed air tank 110 is formed as a substantially cylindrical body. The compressed air tank is composed of a first dished bottom 113, a middle part 116 and a second dished bottom 114. The dished bottoms 113 and 114 close the cylindrical body and may, for example, be welded to the central part 116. In another example, the dished bottoms 113, 114 may be secured to the center portion by rivets or similar attachment means.

The central part 116 of the compressed air tank 110 may be configured as a cylinder. The dished bottoms 113 and 114 may have a first portion continuing the cylindrical shape of the center portion 116 and an outwardly bowed or arched second portion. The resulting by the composition of the central portion 116 and the dished ends 113 and 114 compressed air tank with a substantially cylindrical shape has a longitudinal axis 115 which extends in the longitudinal direction of the compressed air tank. In particular, the longitudinal axis 115 may be an axis of symmetry. In addition, the compressed air tank has a transverse direction 117 which extends in the radial direction of the substantially cylindrical compressed air tank.

The compressed air tank 110 may also have connections for filling the compressed air tank with compressed air, for example during maintenance. The air spring arrangement of air springs and additional air volume can, for example, be fed from outside via one or more supply lines. This supply is controlled by at least one level control valve (usually two per vehicle - hence 2-point control). In addition, the compressed air tank can identify seals, which largely prevent escape of compressed air. The compressed air tank may also have openings for draining water.

FIG. 3b showed a front view of the compressed air tank FIG. 3a , The dished bottom 114 is provided with the two terminals 141, 142 for the connecting lines 121, 122, as shown in FIG FIG. 1 is shown. It shows FIG. 3b the substantially circular contour of the pressure vessel 110. The pressure vessel 110 has a diameter D. In one example, the diameter D of the compressed air tank may be up to about 50 cm. According to embodiments described herein, the compressed air reservoir may have a total volume of, for example, a volume of about 80 to 100 liters, but also a volume of up to about 200 liters and more

The two connections 141, 142 are arranged in the vicinity of the longitudinal axis 115 of the compressed air tank 110. In particular, the ports 141 and 142 may be disposed on the dished bottom in an area having a radius of approximately 0.4 x D about the longitudinal axis 115 of the compressed air tank 110. In one example, the terminals 141 and 142 are disposed in a 0.4 x D radius region about the longitudinal axis. Regarding the size of the area, a balance between sufficient stability of the compressed air tank and a small installation space for the connections, or the connection lines, can be made in order to determine the optimum range.

As the FIG. 3b shows, the terminals are spaced from each other. The distance between the ports 141 and 142 to the longitudinal axis 115 of the compressed air tank may be the same or different.

Figure 3c shows a detailed view of the dished bottom 114 and the terminal 141 of the compressed air tank 110. In the in the Figure 3c As shown, the terminal 141 is formed as a part of the dished bottom 114. In other embodiments, the port 141 may also be formed as part of the first connection line, or may be a separate component that is mounted to the compressed air tank. For example, the port 141 may be inserted into a designated bore in the dished bottom 114 and / or welded thereto.

Figure 3c also shows a tank portion 161 of the first connection pipe 121. The tank portion 161 is a portion of the first connection pipe 121 that extends inside the compressed air tank 110. For example, this can improve flow characteristics in the connection lines. The container portion 161 is welded to the inside of the dished bottom 114 and the terminal 141. To stabilize a weld on the outside of the compressed air tank between the dished bottom 114 and the terminal 141 is attached.

FIG. 4a shows a side view of an air spring assembly 100 according to embodiments of the invention. FIG. 4b shows a view from the top and from the side of the in the FIG. 4a shown air spring assembly 100. The air spring assembly 100 has a compressed air tank 110, which may be, for example, a compressed air tank, as in the FIGS. 3a to 3c shown and described. A first connection line 121 is connected to the dished bottom 114 of the compressed air tank 110 via a first connection 141. The second connection line 122 is connected to the same dished bottom 114 of the compressed air tank 110 via a second connection 142, which is separate from the first connection 141. The dished bottom 113 closes the compressed air tank 110 at the opposite side of the connections 141, 142 for the connecting lines.

The connecting lines 121 and 122 are fluidly connected to one another via a connection 150. The connection 150 may include, for example, a control valve that regulates the flow of air in the connection 150. The control valve can be controlled from the outside and to a control mechanism for the air springs (in the FIGS. 4a and 4b not shown). The connecting lines themselves can be equipped with orifices or control valves. The connection 150 between the connecting lines, as can be seen in the FIGS. 4a and 4b can recognize, connecting pieces for the connecting lines 121, 122 have. While the connection lines 121, 122 are merely formed by tubes in the example shown, the connection 150 provides connection pieces into which the tubes can be inserted and fastened. In this case, the connection 150th between the connecting lines 121, 122 also contribute to the stabilization of the air spring assembly 100.

On the outside of the compressed air tank 110, in particular on the outside of the central portion 116 of the compressed air tank, a fastening element 180 is mounted in the form of a bracket. The bracket 180 may be used to secure the air tank 110 to the car body or bogie of the rail vehicle. For example, the rail vehicle may have a receptacle in the form of an extension or a spike that can engage the bracket 180 to hold the air tank. An additional fixation can be done for example by means of fixing straps and / or screws.

The fastener 180 allows the compressed air tank or the entire air spring assembly easily replaced, for example, for maintenance purposes. But even a replacement of the compressed air tank with another model of the compressed air tank is so uncomplicated possible. For example, the compressed air tank having an air volume according to embodiments described herein may be replaced by a compressed air tank having two or more separate compressed air volumes. In another example, the air tank can be easily disassembled for upgrading or modification to another model and re-mounted to the car body or bogie after upgrade. An upgrade not belonging to the invention can for example be done by inserting a partition that makes two compressed air volumes in the compressed air tank from the one compressed air volume in the compressed air tank. In one embodiment, the compressed air tank may already have a receptacle for a partition wall, for example by means of corresponding guides, receptacles and / or fastening means.

LIST OF REFERENCE NUMBERS

100

Air spring arrangement

110

Air receiver

111

Compressed air volume

113, 114

dished ends

115

longitudinal axis

116

Middle part of the compressed air tank

117

Transverse direction of the compressed air tank

121, 122

interconnectors

131, 132

air springs

141, 142

Connection to compressed air tank

150

Connection of the connecting cables

161

Container section of the connecting line

180

fastener

Claims (15)

1. A pneumatic spring assembly (100) for a secondary pneumatic suspension between the vehicle body and the bogie of a railway vehicle, comprising:

   a first connecting line (121) for connecting a first pneumatic spring (131) with a compressed air volume, and a second connecting line (122) for connecting a second pneumatic spring (132) with a compressed air volume;

   characterized in that the pneumatic spring assembly (100) furthermore comprises:

   a compressed air container (110), which provides a joint or separate compressed air volume (111), wherein both the first connecting line (121) and the second connecting line (122) are connected to the compressed air volume (111), wherein

   the compressed air container (110) can be mounted on the vehicle body or the bogie of a railway vehicle, in particular can be mounted in an interchangeable manner.
2. The pneumatic spring assembly according to Claim 1, wherein the first connecting line (121) and the second connecting line (122) are linked fluidically in a separate connection.
3. The pneumatic spring assembly according to Claim 2, wherein the first connecting line (121) and the second connecting line (122) are linked fluidically in the separate connection via a diaphragm or a control valve (150) for controlling the airflow between the first connecting line and the second connecting line.
4. The pneumatic spring assembly according to any one of the preceding claims, wherein the compressed air container (110) has a first connector (141) for connecting the first connecting line (121) to the compressed air volume (111), and a second connector (142) for connecting the second connecting line (122) to the compressed air volume (111), wherein both connectors (141, 142) are arranged on the same side of the compressed air container (110).
5. The pneumatic spring assembly according to Claim 4, wherein the compressed air container (110) has two dished heads (113, 114), and wherein the first connector (141) and the second connector (142) are connected to the compressed air container (110) at the same dished head (114).
6. The pneumatic spring assembly according to any one of the preceding claims, wherein the compressed air container has a circular cylindrical shape with an outer diameter D and wherein at least one of the two end faces of the compressed air container are formed by a dished head, wherein a first connector (141) for connecting the first connecting line (121) and a second connector (142) for connecting the second connecting line (122) are arranged on the dished head in an area with a radius of 0.4 x D around a longitudinal axis (115) of the compressed air container (110), wherein the first and second connectors (141, 142) can be located at the same distance to the longitudinal axis or at different distances.
7. The pneumatic spring assembly according to any one of the preceding claims, wherein the pneumatic spring assembly (100) is used to realise a two-point control of the air springs (131, 132).
8. The pneumatic spring assembly according to any one of the preceding claims, also having one or more additional connecting line(s), wherein the additional connecting line(s) are linked with the compressed air volume (111) of the compressed air container (110).
9. The pneumatic spring assembly according to any one of the preceding claims, wherein the compressed air container (110) has a mounting element (180) for mounting the compressed air container on a railway vehicle, in particular on a vehicle body or a bogie of a railway vehicle.
10. The pneumatic spring assembly according to any one of the preceding claims, wherein the compressed air container (110) has a bracket in the interior of the compressed air container, which can accept a divider inside the compressed air container for separating two volumes.
11. The pneumatic spring assembly according to any one of the preceding claims, wherein the first connecting line (121) and the second connecting line (122) have a shared connection (140) to the shared compressed air volume (111) of the compressed air container (110).
12. A railway vehicle with a secondary suspension between the bogie and the vehicle body of the railway vehicle, which has a first pneumatic spring (131) and a second pneumatic spring (132) per bogie, wherein the railway vehicle has a bracket for, as well as a pneumatic spring assembly (100) according to any one of the preceding claims.
13. The railway vehicle according to Claim 12, wherein the bracket makes it possible to mount the compressed air container (110) of the pneumatic spring assembly (100) on the vehicle body or on the bogie of the railway vehicle.
14. A method for supplying pneumatic springs (131, 132) of a secondary suspension between vehicle body and bogie of a railway vehicle, comprising:

    - providing a first compressed air connection (121) between a compressed air volume (111) of a compressed air container (110) and a first pneumatic spring (131) of a secondary suspension;

    - providing a second compressed air connection (122) between the same compressed air volume (111) of the same compressed air container (110) and a second pneumatic spring (132) of the secondary suspension; and

    - connecting the first compressed air connection (121) and the second compressed air connection (122) with the compressed air container (110) which thus provides a shared or an individual compressed air volume.
15. The method according to Claim 14, wherein the provision of the first connecting line (121) and the second connecting line (122) includes connecting the first connecting line (121) and the second connecting line (122) to the compressed air container (110) on the same side of the compressed air container (110).

Images