EP2681094A1

EP2681094A1 - Rail vehicle with receptacle space underneath the floor

Info

Publication number: EP2681094A1
Application number: EP12707514.1A
Authority: EP
Inventors: Olaf Lemcke; Klaus Fischer
Original assignee: Bombardier Transportation GmbH
Current assignee: Alstom Transportation Germany GmbH
Priority date: 2011-02-28
Filing date: 2012-02-28
Publication date: 2014-01-08
Anticipated expiration: 2032-02-28
Also published as: CN103502077A; EP2681094B1; WO2012116971A1; CN103502077B; ES2603638T3; DE102011013175A1

Abstract

The invention relates to a rail vehicle, in particular a component of a high-speed train, wherein • the rail vehicle has a car body with a floor which bounds in the downward direction a car body interior space for transporting passengers and/or freight • a receptacle space (401) for holding devices (411, 412, 413, 417) of the vehicle is formed underneath the floor, wherein the receptacle space (401) has margins on all sides, has at least one air inlet opening (424, 425, 426, 427) and at least one air outlet opening (419, 420, 421) and is protected against the ingress of dirt, • the at least one air inlet opening (424, 425, 426, 427) opens a main air volume of the receptacle space (401) to the surroundings of the rail vehicle, wherein the main air volume contains the greater part of the air in the receptacle space (401) and therefore forms a reservoir for cooling air, • at least one device (411, 412, 413, 417) is arranged in the receptacle space (401), and at least one fan (410, 415), which, during the operation of the fan (410, 415), accelerates air from the main air volume, with the result that air flows to at least one device to be cooled.

Description

Rail vehicle with receiving space below the ground

The invention relates to a rail vehicle, in particular a tensile part (eg a carriage or power train) of a high-speed train. The invention further relates to a method for producing a rail vehicle, in particular a tensile part of a

High-speed train. The rail vehicle has a body with a bottom that limits a body space for transporting people and / or cargo down. Below the bottom of a receiving space for receiving devices of the vehicle is formed, wherein the receiving space at least one

Has air inlet opening and at least one air outlet opening. The receiving space is particularly in the height range of bogies of the rail vehicle.

For the operation of rail vehicles, various facilities are needed, such as traction motors for traction motors and other electrical loads, voltage transformer, battery chargers, control units for controlling others

Facilities, compressed air compressors of the brake system and electrical distributors. These devices are preferably arranged at the bottom of the floor, especially in cars for high-speed trains.

WO 2010/026049 A1 describes a rail vehicle with a cooling arrangement for components arranged in an underfloor area, which are cooled by means of an associated radiator. The cooling arrangement has at least one first inlet opening for fresh air to be used as cooling air and at least one fan for guiding the cooling air in the direction of at least one of the components. The at least one first inlet opening is arranged in the underfloor area. The cooling arrangement also has at least one second inlet opening, which is fluidically connected to the fan, for cooling air

using deadline air, which is arranged above side skirts of the rail vehicle and connected via an air duct with the underfloor area. In a specific embodiment, a bottom side of a railcar is fluidly sealed by means of a floor pan, so that above the floor pan cooling air flows can be performed. The floor pan continues at its outer edges in side skirts of the trainset. A power converter cooling system, which is provided within the floor pan and in the longitudinal direction of the railcar approximately in the middle, draws cooling air for cooling the power converter, which is arranged above the floor pan. Further, traction motor fans draw air for cooling the traction motors provided in bogies, and below the cooling system, an air outlet is provided in the otherwise sealed tray, which serves as an outlet for the cooling air flow of the cooling system. According to the cited document, at least part of the cooling air passes via a channel from an inlet opening to the underfloor arranged cooling arrangement.

The arrangement of the above-mentioned devices below the carbody floor (i.e., underfloor) requires stable attachment of the facilities. In addition, the facilities must be reliably protected against contamination, in particular by dirt particles in the ambient air. Furthermore, the devices are also against mechanical impact, for. As whirled stones to protect.

It is customary to hang the units at the bottom of the car body. To one

To avoid contamination by particles in the cooling air, the devices can be housed in a separate housing and particles are filtered out of the cooling air, fed through a channel and introduced into the housing. One

corresponding fan, which causes the cooling air flow is typically located within, at the beginning or at the end of the air duct.

Underground devices can be of varying difficulty. For example, a voltage transformer may weigh several tons while an electric distributor weighs only a few kilograms. In order not to interfere with the ride characteristics of the wagon, the weight should be balanced, i.e. not all the particularly heavy equipment in the front of the wagon and all light equipment in the rear of the wagon, for example. Also in the direction transverse to the direction of travel, the particularly heavy equipment should be located with its center of gravity in the middle of the car body and should be as possible, the center of gravity of the underfloor devices located in the middle of the car body. As the devices but also very

have different volumes and are to be connected, for example, to cables or liquid lines, the mounting location for the individual devices can not be chosen freely. In many cases, at least one particular local area must be responsible for the

Accommodation of a particular device are respected, or it must be taken additional leads or cables in purchasing. In addition, the

Manufacture of connections of equipment immediately below the bottom of the

Car body is difficult. In the production of the car, the assembly can be facilitated by the fact that the devices are first attached and connected in the underfloor area and only then other facilities and parts of the car are mounted. In the later maintenance and repair of equipment, however, the effort for loosening and restoring the connections and disassembly of the devices is difficult. In addition, even the arrangement of particularly heavy equipment below the ground contributes to the overall center of gravity of the car above the ground

Rails lies. With a bracket on the underside of the floor, which allows a lower arrangement of heavy equipment, the center of gravity can be lowered. However, such a stable additional bracket increases the overall weight of the car.

It is an object of the present invention to provide a rail vehicle and a method for producing a rail vehicle, can be cooled by the underfloor facilities of the rail vehicle in a simple manner and yet reliable, with pollution by particles contained in the ambient air to be avoided.

According to a basic idea of the present invention, at least one device to be cooled is arranged underfloor in a receiving space which prevents ingress of

Dirt is secured and also has outer surfaces that protect the facilities in the recording room against mechanical damage. Alternatively, at least one device to be cooled (preferably underfloor) is outside of the

Reception room arranged, but cooled with air from the receiving space. In the receiving space in this case is at least one device that does not have to be cooled by an airflow generated by a radiator. In particular, at least one air inlet opening of the receiving space is a filter device for filtering particles out of the ambient air passing through the inlet opening. The filter device may consist of several filters, for. B. a gravity filter and a particle filter of the filter class G3 (ie, a filter with an average separation efficiency of 80 to 90% for particles, eg., Particles which are greater than 10 μηι) have. This ensures that air purified via the at least one inlet opening enters the receiving space. Since the receiving space is otherwise secured against the ingress of dirt, especially through walls and receiving space floor is located during operation of the rail vehicle only in this way purified air within the

Receiving space.

According to a further basic idea of the present invention, it is possible to dispense with air supply channels within the receiving space. Rather, air can be sucked in at any point within the receiving space and from any areas of the receiving space and a cooling air flow for cooling at least one to be cooled Device are generated. The air in the receiving space therefore forms a reservoir for already cleaned cooling air.

The elimination of cooling air ducts to draw in air from the environment simplifies the construction and assembly and reduces the dependence on suitable conditions outside the rail vehicle. For example, during operation outside the rail vehicle, pressure fluctuations may occur (eg, due to vehicle speed and cross winds) which, in the case of an air supply duct, act directly on the cooling air flow. Corresponding fluctuations of the cooling air flow within the receiving space are at least largely avoided by a large reservoir of already cleaned cooling air.

In particular, it is proposed: A rail vehicle, in particular a train part of a high-speed train, wherein

• The rail vehicle has a car body with a bottom, the one

Car Body Interior Limited to Transportation of Persons and / or Cargo Below,

• below the floor, a reception room for the reception of facilities of the

Vehicle is formed, wherein the receiving space is bounded on all sides, at least one air inlet opening and at least one air outlet opening and is secured against ingress of dirt,

The at least one air inlet opening opens a main air volume of the receiving space to the surroundings of the rail vehicle, wherein the main air volume contains the majority of the air in the receiving space and thus forms a reservoir for cooling air,

• In the receiving space at least one device is arranged and at least one fan is arranged, which accelerates the operation of the fan air from the main air volume, so that air flows to at least one device to be cooled.

It is also proposed: A method for producing a rail vehicle, in particular a tensile part of a high-speed train, wherein

For the rail vehicle, a car body is provided which has a floor which delimits a car body interior for the transport of persons and / or cargo below,

• below the floor, a reception room for the reception of facilities of the

Vehicle is formed, wherein the receiving space is bounded on all sides, wherein at least one air inlet opening and at least one air outlet opening of the Receiving space are provided and the receiving space is secured against ingress of dirt,

The at least one air inlet opening is provided so that a main air volume of the receiving space opens to the surroundings of the rail vehicle, wherein the main air volume contains the majority of the air in the receiving space and thus forms a reservoir for cooling air,

It is preferred that the device in the receiving space or at least one of the arranged in the receiving space facilities is a device to be cooled and the fan is arranged so that it accelerates during operation air from the main air volume and the air flows to the device to be cooled and flows from the device to be cooled through at least one air outlet opening from the receiving space into the environment.

In addition to the main air volume, in particular a volume within the

Receiving space are located, which is used for deriving the heated cooling air through the at least one air outlet opening into the environment. Furthermore, it is also possible to supply unused and therefore not yet heated cooling air from the receiving space traction motors, which are located outside of the receiving space in an adjacent bogie. The feeder occupies part of the volume in the receiving space. In this case, the supply preferably begins at a cooler which accelerates the air from the main air volume and thereby pressurized and fed by the supply to the traction motor or traction motors. These volume areas therefore also contain cooling air, which however is not available for sucking and cooling the arranged within the receiving space facilities.

There may be additional volume areas of the receiving space in which there is air, but does not belong to the main volume of air. For example, air may be permanently trapped within housings. However, it is preferred that the main volume of air not only contain most of the air in the receiving space (ie more than 50%) but more than 70%, and more preferably more than 80% of the total volume of air. In particular, when the receiving space extends beyond the maximum possible length and maximum possible width of the space available below the body floor, a very large main body is created in this way. Air volume and is therefore formed a particularly large reservoir for already cleaned cooling air.

At least one fan is arranged in the receiving space, which cools at least one device to be cooled (which is also preferably arranged within the receiving space) by accelerating air from the main air volume, so that the device to be cooled is cooled becomes. In general, no additional fan is required for the same device to be cooled, and no additional fan is needed for the intake of air from the environment of the rail vehicle. Rather, the negative pressure generated by the fan suffices for air from the environment to flow in through the at least one inlet opening into the receiving space. The fan is also sufficient for the used cooling air, which has absorbed heat from the device to be cooled, to be able to flow out into the environment via the at least one outlet opening.

Preferred dimensions of air from the receiving space is used not only for cooling a device to be cooled, but for a plurality of devices to be cooled. The devices to be cooled can all be located inside the receiving space or at least one device to be cooled (eg a drive motor) can be located outside the receiving space. In both cases, preferably, each of the plurality of devices to be cooled is assigned at least one fan, d. H. There is at least one separate fan for each device to be cooled. However, several units can be combined to form a common device to be cooled, z. B. several converter units (such as traction converter, auxiliary converter and network rectifier) to a power converter device. However, that will be

Preferably, different types of units are not grouped together. For example, devices preferably present in the receiving space, in particular a battery charger, a power converter and / or a

Transformer for transforming the mains voltage from an electrical

Supply network in an electrical voltage for the operation of a power converter, which are for example alone and / or with other to be cooled and / or not to be cooled facilities in the receiving space, not combined to a common device to be cooled. Each of the fans draws cooling air from the main volume of air and creates an airflow that cools the associated device to be cooled.

The receiving space can therefore be designed in particular as large as possible.

In particular, the receiving space extends over the maximum possible length, ie in Direction of travel between two bogies of a car or power car, the main air volume preferably passes over the entire length of the receiving space. Thus, a large air reservoir exists in the main air volume, with the various cooling air streams being fed to the various devices to be cooled from the reservoir. Fluctuations in the demand for cooling air for the various

Facilities can compensate for each other at least partially, as long as they do not correlate completely in time.

Preferably, the at least one air inlet opening or at least one of the air inlet openings is formed as a recess in a side wall of the receiving space. In the recess can z. B. at least part of a filter device (s.o.) be introduced for filtering particles in the sucked air or be.

Such recesses may be provided at various suitable locations on the side wall. They require little space, increase as opposed to

Air supply ducts are not the weight of the rail vehicle and are easy to make. Since the receiving space in contrast to a plurality of individual, separate and mutually partitioned compartments or unlike a provided with air supply channels underfloor area has a large, continuous internal volume, is also a large Au ßenfläche for air inlet openings to

Available. Of course, not the entire large outer surface or a substantial part of it is to be formed by air inlet openings, but rather air inlet openings of the appropriate size and number can be arranged at suitable locations of the outer surface. For example, in a power car of a

High-speed vehicle with a maximum speed of more than 300 km / h in the front area of the side walls of the receiving space no air inlet opening be provided, since there is a negative pressure in this area. However, due to the air inlet openings arranged further back, air can nevertheless flow into the receiving space and also move within the receiving space into its front area if a device to be cooled is arranged there and an associated fan generates a corresponding cooling air flow.

Under the front area is in particular the front lying in the direction of travel area to understand, ie the area that is closer to the respective end of the train, for example, the locomotive or the power car. If, as is the case, for example, in a train with power cars at both opposite ends, the direction of travel is reversed, the so-called front area is located in the direction of travel further back than a rear area thereof Receiving space. However, this is harmless for effective cooling of the devices in the receiving space, since the same turbulences do not occur in the region of one end of a train as at the beginning of the train. Therefore, an inflow of air through the air inlet openings arranged at the very end of the train into the receiving space will be possible. The term "front area" in this case is to be understood in particular as a synonym for "closer to the end".

In particular, a plurality of devices can be distributed in the receiving space in the longitudinal direction of the rail vehicle over a longitudinal section of the receiving space

(in particular with a plurality of devices to be cooled) of the vehicle, wherein the main air volume extends at least over the longitudinal section and the main air volume in the longitudinal section is continuous, i. is not divided into individual, separate and mutually partitioned compartments, and wherein in a front region of the longitudinal section, in which at least one of the devices of the vehicle is located in side walls of the receiving space no air inlet opening is present, but in a more rearwardly located area of the Longitudinal section in the side walls of the receiving space air inlet openings are arranged, can enter through the air into the main volume of the receiving space.

In particular, when the receiving space viewed in the direction of travel is at the beginning of a train, for example in a power car or a locomotive at the beginning of the train, this avoids that outside of air inlet openings in side walls of the receiving space, especially at high speeds over 250 km / h creates a negative pressure , Therefore, air can enter the main volume of air at the existing further air inlet openings at which au outside no negative pressure. Since the main air volume is continuous, the air that has entered through the existing air inlet openings, within the longitudinal section reach into the front area and is there for cooling facilities available.

Preferably lies / are the only air outlet opening or, if several

Air outlet openings are present, all air outlet openings in the lower floor of the receiving space, i. on the lower outer surface of the receiving space. in the

Unlike the air inlet openings in the side walls arise at higher speeds no air flow through the receiving space, of the

Air inlet openings to the air outlet openings, obstructing pressure conditions outside the receiving space. Rather, it is created below the receiving space typically a negative pressure everywhere, so that lower air outlet openings favor the flow of air through the receiving space.

In the following, a preferred type of mechanical construction will be discussed, the various designs of the construction are particularly advantageous for the inventive design of the receiving space and the cooling of facilities.

In particular, it is preferred that the majority of the weight forces

(Preferably, the total weight forces) of the at least one device to be cooled down on a substructure of the receiving space is exercised / and acts on the substructure on the car body. At least the majority of the weight forces is therefore not exerted directly on the floor of the car body interior, but indirectly through the substructure. In particular, as will be described in more detail, the substructure may have an underbody support.

It is also preferred that above the at least one device to be cooled a clearance to the bottom of the car body interior exists or is formed. This clearance can be used for the main air volume and / or for additional facilities of the rail vehicle (eg cable ducts for electrical lines).

The attachment of the underbody support to supporting parts of the car body allows the weight of at least one of the devices in the receiving space on the

Underbody carrier rests or at least the weight of the device is partially, preferably predominantly and particularly preferably completely applied to the underbody carrier.

The derivation of the weight forces down for mounting considerable advantages. For example, initially the substructure can be formed, the devices and other devices to be cooled can be applied to the substructure or introduced into the substructure, and this prefabricated arrangement can then be connected to the car body. The complex assembly is facilitated because the receiving space is freely accessible from the top before connecting the substructure to the car body.

As mentioned, an underbody support may be provided as part of the substructure. At its ends, ie at the sides of the car body, the underbody support is connected to supporting parts of the car body, in particular each with a longitudinal member of the car body, which serves to transmit longitudinal forces in the longitudinal direction of the car body. In particular, therefore, in each case in a transition region between the bottom and the side walls of the car body interior are a longitudinal member for transmitting longitudinal forces extending in the longitudinal direction of the car body. In this case, the car body has at least one underbody support, which extends below the bottom of the one longitudinal member to the other side member, wherein the underbody support extends partially at a distance to the ground, so that between the underbody support and the Floor is part of the recording room.

In particular, the underbody beam has a U-shaped profile when viewed in the longitudinal direction (travel direction) of the rail vehicle, i. H. he can take a U-shaped course from one side to the opposite side. Such side members are usually located in the transition region between the ground and the

Sidewalls.

Preferably, the underbody support initially extends downwards from the longitudinal member and is angled or curved at a lower level than the height level of the longitudinal members, wherein the underbody support on the

Bending or curvature merges into an approximately horizontal portion extending in the distance to the bottom of the car body. On the opposite side is preferably again a bend or bend, at which the underbody carrier merges into a second, likewise from top to bottom or from bottom to top extending portion. With respect to a median plane of the vehicle, which extends in the vertical direction and also extends in the longitudinal direction of the car body, the underbody support is preferably symmetrical or at least substantially symmetrical, ie, symmetrical with the exception of fastening means with which the carrier with the side members and / or connected to the facilities in the reception room.

A guide is preferably arranged on the longitudinal carriers, by means of which a movement of one end of the underbody carrier can be guided in the longitudinal direction of the vehicle body. There is provided a fastening means by which the underbody support is selectively attachable in a plurality of different positions relative to the side rail. This makes it possible, during the first assembly of the car body or in a later remodeling, to move and fix the substructure supports in the longitudinal direction of the car body. This allows different configurations of

Facilities are attached to the underbody construction. Depending on the dimensions and weight of the underfloor devices, the positions of the underbody supports can be selected and adjusted. The guide may, for example, by one or more down open C-shaped rails are realized. Alternatively, however, the upper ends of the underbody beams may be attached to another structure attached to the underside of the floor.

As mentioned earlier, a majority of underbody carriers may be in different

Longitudinal positions to be arranged in the longitudinal direction of the car body and extends below the bottom of the one longitudinal carrier to the other longitudinal carrier in each case. For example, 5-8 such carriers may be disposed below the floor of a large capacity passenger car to accommodate the underfloor devices required for the operation of the car or train. In this case, preferably all underbody beams are located in the longitudinal section between the two bogies of the carriage. However, it is also not excluded to accommodate one or two underbody beams in the end region of the car body, that is, at the longitudinal ends of the car body. However, there is usually the clutch for coupling the car with an adjacent car, so that the space available for the underfloor devices is small.

An underbody support can be made very sturdy with relatively little weight so that it can accommodate large weight forces from underfloor devices to be placed. For putting in, such an underbody support in a simple manner with supporting parts, such as in particular the side members, are fixed in the transition region between the bottom and side walls. This succeeds in a simple way, the

Derive weight forces directly over the underbody support and the load bearing parts on the bogies.

The arrangement of the facilities underfloor is also the production of

Connection to the devices easier, since the connecting cables and connecting cables usually pass through the bottom or are guided on the underside of the floor. Between devices that do not extend over the entire height of the space between the underbody support and the floor of the car body remains

Clearance to the floor, so that the assembly of the connections is facilitated.

In addition, the underbody support does not require that a device be attached to a particular position in the course of the wearer. The exact position can therefore be below

Consideration of other criteria. This is especially true when not only an underbody carrier, but at least two such carriers are present. In this case, additional elements may be provided, which together with the

Underbody beams are parts of a substructure. Such elements will be discussed in more detail. Depending on the design of these elements, the underfloor devices can optionally be attached to the additional elements of the substructure or be arranged thereon. If a plurality of underbody beams are present, it is preferred that the space between the beams is at least partially closed by preferably plate-shaped underbody elements, wherein

Air outlet openings may be provided therein. For example, such a plate-shaped element may form a subfloor, which preferably extends in the horizontal direction and approximately parallel to the actual bottom of the car body. Alternatively or additionally, a plate-shaped element may form a side wall of the underfloor area. These plate-shaped elements between the underbody beams improve the aerodynamic properties of the car. If the space between the supports is only partially closed by plate-shaped underbody elements, for example, another part of the clearance may be closed by at least one device to be cooled and / or at least one device not to be cooled (eg by an outer wall of the cooling and / or not to cool device).

The plate-shaped elements may in particular be extruded plate-shaped elements in which a plurality of air chambers is arranged between two sheet-like, approximately mutually parallel regions which form the outer surfaces, which are separated by partitions, which in a

Longitudinal direction of the plate-shaped element. Such extruded plate-shaped elements may preferably be made of aluminum

preferably bolted to underbody beams. There are several

plate-shaped elements are manufactured separately in the extrusion process and connected to each other before assembly to the underbody beams, in particular welded. Also, the side walls and the bottom of the car body may be at least partially made of such plate-shaped elements. If the side walls, the floor and an additional ceiling element are prefabricated, substantially plate-shaped elements, is of an integral construction of the

Car body spoken. The underbody beams are particularly suitable for such a car body, wherein also longitudinal beams can be made in the transition region between the bottom and the side walls in the extrusion process. However, other constructions are possible, in particular with the side members, for example conventional double T-beams, i. I-beams.

At least two in the longitudinal direction of the car body adjacent subfloor support may be connected to each other by at least one longitudinal strut. The longitudinal strut does not have to run exactly in the longitudinal direction of the car body, but can also run diagonally. The use of longitudinal struts represents an alternative or additional measure to the use of plate-shaped connections (also referred to above as plate-shaped elements), which serve to stiffen the underbody construction. For example, if no rigid plate-shaped elements are used, but rather a plurality of longitudinal struts, the substructure can be made very stiff and light and is clad only with thin, non-load-bearing elements, for example, to improve the aerodynamic properties and the receiving space against the

Seal environment. Several such longitudinal struts result in a distribution of the weight forces exerted by the devices, so that such a construction is particularly advantageous when underfloor devices with very different weights are to be accommodated below the floor.

It is preferred that the at least one device to be cooled within the

Receiving space is / is arranged and is arranged at a distance from at least one side wall of the receiving space is /, so that between the device and the side wall, a free space remains, which forms a part of the main air volume. Through this space, air can be distributed within the main volume of air or air can be sucked by a fan.

Embodiments of the invention will now be described with reference to the accompanying drawings. The individual figures of the drawing show:

1 is a three-dimensional view of an underbody support,

2 shows the underbody carrier according to FIG. 1, wherein the carrier at its

each opposite ends is connected to a longitudinal member of a car body

Fig. 3 shows an arrangement with a plurality in the longitudinal direction of a car body

spaced-apart subfloor beams, which are connected by longitudinal struts in pairs,

FIG. 4 shows the arrangement according to FIG. 3, the construction also having plate-shaped elements, with which the underbody receiving space is covered,

Fig. 5 shows a preferred embodiment of a fastening of an upper end of a

Underbody carrier for attachment to two parallel C-shaped rails (not shown in Fig. 5),

6 shows a cross-section through the arrangement in FIG. 5, wherein the end of the underbody support is fastened to the two C-profile-shaped rails, 7 shows an arrangement as in FIG. 3, wherein a plurality of devices are arranged in the underbody receiving space,

Fig. 8 shows a part of an underbody support, on which two plate-shaped elements

are fixed, which extend in the longitudinal direction of the car body in both directions away from the carrier and form a lower end of the underbody receiving space,

9, the arrangement according to FIG. 8, also in a three-dimensional representation from another angle, wherein the underbody support and the two plate-shaped elements are completely shown, and

Fig. 10 shows the arrangement of FIG. 8 in three-dimensional view, the view is directed to the underside of the arrangement.

Fig. 1 1 shows a cross section through a receiving space for receiving from

Cooling facilities and optional other facilities

Railway vehicle, wherein the receiving space is arranged below the bottom of the car body, not shown in the figure,

Fig. 12 is a cross-sectional view similar to that of Fig. 1, showing an underbody support through which the weight of devices in the receiving space on the

Car body is derived, and wherein above a device in the

Receiving space, but below the car body floor cable channels are arranged,

Fig. 13 schematically shows a plan view of the interior of a receiving space, for. Example of the receiving space shown in Fig. 1 1 and Fig. 12, wherein a plurality of cooling devices, associated fans and the course of the air flow are shown.

Fig. 1 shows a single underbody support 1, which has a U-shaped profile, wherein the transverse leg 4 is designed to be significantly longer than the longitudinal leg 2a, 2b extending in the vertical direction. At the upper end of the first longitudinal leg 2a and also at the upper end of the second longitudinal leg 2b, both extending approximately vertically inwards, only slightly inclined inwardly from top to bottom, there is a respective T-shaped widening 5a, 5b, in a plate-shaped mounting surface opens, each having a plurality of through holes 6, of which only a few are denoted by these reference numerals in Fig. 1. In order to increase the stability of the carrier 1 in the region of the transition between the longitudinal limbs 2 and the transverse limb 4, a diagonal brace 3a, 3b which connects a central region of the longitudinal limb 2 with the transverse limb 4 diagonally is located in the transition region. The term longitudinal leg here does not refer to the longitudinal direction of the car body. In the upper region of the longitudinal leg 2 is optional on the inside of the

Longitudinal limb 2 an additional Abstützung 9 a, 9 b fixed, for example, to attach an additional covering of the (not shown in Fig. 1) carbody bottom.

In the transition region between the longitudinal legs 2 and the transverse leg 4 is in each case a plurality of holes 10 a, 10 b, 10 c, 10 d and that on the left in Fig. 1 pointing to the visible surface and on the in Fig. 1 to the right rear facing not recognizable surface of the carrier 1. These two surfaces pointing to the left in front and to the right are realized in the aforementioned transition region by sheet-like, mutually parallel and spaced material regions of the carrier 1. Therefore, it is also possible to hold in the space between the two material areas, for example, a screw head or a

Tighten nut. These holes 10 are used for attachment of

Longitudinal struts, over which the carrier 1 is connected to longitudinally adjacent carriers.

The carrier 1 is made of aluminum, for example. It can be made from a plurality of individual parts. For example, the diagonal strut 3 is manufactured separately and only then connected to the longitudinal strut 2 and the cross member 4. The

Connection areas are not shown in detail in Fig. 1. However, it is also possible in each case to produce the material regions which form the front left and right rear-facing surface of the carrier 1 in one piece and to connect them to each other by a sheet metal strip comprising the outside surfaces of the longitudinal limbs 2 and the downwardly facing surface of the transverse limb 4 forms. Furthermore, a further metal strip can be added later, which forms the inside surfaces of the longitudinal leg 2 and the diagonal struts 3 and the upward-facing surface of the transverse leg 4. The required joints are made for example by welding.

Four additional supports 7a, 7b, 7c, 7d with holes extending in the vertical direction are located on the surface of the transverse limb 4 pointing to the left front, wherein such support elements are also arranged on the side of the transverse limb 4 pointing to the right, or at least can be arranged if it is not the last carrier 1 in the longitudinal direction. These support elements 7 may be used for laying and connecting to plate-shaped elements or as attachment points for attaching devices in the receiving space.

The transverse leg 4 also has a plurality of through-holes 8 through which, for example, cables or lines for liquids or gases can be passed. In this way, for example, connection lines for underfloor devices can be passed through the carrier 1 and thus fixed in places in terms of their position.

Fig. 2 shows the carrier 1 of Fig. 1 with its transverse leg 4 and its longitudinal legs 2a, 2b, wherein the longitudinal legs 2 are fixed to the underside of each one longitudinal member 24a, 24b of a rail car body. Of the car body, in addition to the longitudinal members 24, which preferably extend over almost the entire length of the car body (the longitudinal extent extends in a direction perpendicular to the plane of Figure 2), also a bottom 13 and the lower portions of two

Side walls 1 1 a, 1 1 b shown. The bottom and the side walls 1 1 define a car body interior 17. The bottom 13 is composed in the embodiment of five plate-shaped elements 12 which are welded together. In this case, the hollow chamber structure of both the bottom 13 and the longitudinal member 24 can be seen. Preferably, it is extruded aluminum profiles. The not in Fig. 2

shown roof area and the side walls (which are not shown in Fig. 2 except the lower portions) can also be made of extruded aluminum profiles of similar construction.

By a cuboid 15, which is on the transverse leg 4 of the underbody support 1, it is indicated in Fig. 2 that in the underfloor space between the bottom 13 and the

Transverse leg 4 underfloor devices (especially devices to be cooled) can be arranged.

Fig. 3 shows an arrangement with a total of eight in the longitudinal direction one behind the other

arranged underbody supports 101 - 108, for example, all as shown in Fig. 1 and in Fig. 2 are executed. In this case, as shown in FIG. 1, the individual carriers 101 - 108 extend transversely to the longitudinal direction and have a U-shaped profile when viewed in a plane perpendicular to the longitudinal direction.

Between the underbody beams 105 and 106 is located on the opposite sides in each case an additional strut 1 10a, 1 10b, which are similar to the longitudinal struts 2 of Support 1 according to FIG. 1 and FIG. 2 can be configured. However, the additional struts 10 are not connected, like the underbody supports 101-108, by a transverse strut.

The underbody beams 101 - 108 are on both sides of the car body in pairs by a longitudinal direction extending in the car body longitudinal strut

121-128 and 131-138 connected. In the specific embodiment, not only a longitudinal strut is present on each side between the support 105 and the support 106, but a first longitudinal strut 125 and on the other side 135, which connects the support 105 with the additional struts 110, and respectively a longitudinal strut 126, 136, which connects the additional strut 1 10 with the carrier 106 on both sides. The connections of all the longitudinal struts 121-128 and 131-138 are respectively in

Transition region between the running approximately in the vertical direction of the part strut of the carrier and the extending approximately in the horizontal direction of the cross member of the carrier. For example, the threaded rods are introduced with external thread at the front end of a longitudinal strut in the holes 10 and secured on the opposite side of the bore by nuts.

The underbody construction shown in Fig. 3 with U-shaped underbody supports and longitudinal struts on the opposite sides represents an embodiment for a stable construction. However, such longitudinal struts extending in the longitudinal direction are not absolutely necessary. For example, the function of the longitudinal struts can be taken over by correspondingly stably configured plate-shaped elements, which are arranged between the pairs of mutually adjacent underbody beams and connected to the carriers.

Another possibility is the underbody construction in the manner as shown in Fig. 3 with U-shaped underbody supports and extending in the longitudinal direction

Execute longitudinal beams and additionally plate-shaped elements to install as a cladding. Such an embodiment is shown in FIG. The same reference numerals in Fig. 4 as in Fig. 3 denote like elements. On the underside of the U-shaped underbody beams 101-108 are mounted plate-shaped fairings 144a-144h which form the bottom of the underbody space. It is also possible, as shown in the plate-shaped element 144f, that the plate-shaped panels a

Section 139, so that the underbody space is accessible from below through the cutout 139 or so that an underfloor device for which the height of the underbody space is insufficient or that should not be arranged in a closed space, protrudes. In particular, for the purpose of cooling the underfloor device such a cutout 139 may be useful. The driving wind then cools the bottom of the device. Also, as indicated in the plate-shaped panels 144g, an air-permeable mesh in the panel may be present, so that an air exchange is possible.

Furthermore, the side surfaces of the support structure shown in Fig. 4 can be covered with plate-shaped elements 141. In this way, with the exception of the section 139 closed on three sides U-shaped trough is formed, which bounds the underbody space. The plate-shaped elements on the side surfaces preferably each have a flap 140 (as shown at element 141 c, 141 d, 141 e) and / or an air inlet opening with a dirt separator (eg ventilation grille and / or filter).

At the left in Fig. 4 facing the front end side of the construction can two

Damping elements be present (not shown), which are connected to the transition region of the carrier 108 between the transverse leg and its approximately vertically extending longitudinal leg. These damping elements allow a support against an additional support means not shown in Fig. 4, wherein the damping elements deform elastically under load and thus in particular also allow a deformation of the support structure relative to the additional Abstützung.

As indicated to the right of the side trim panel 141 at one location, the side trim panel 141 may include at least one reclosable opening, such as a flap 140 or door or removable trim panel, so that the space within the underbody construction is accessible.

FIG. 5 shows a three-dimensional representation of one of the upper ends of an underbody carrier, for example the carrier 1 according to FIG. 1. The same reference numerals as in Fig. 1 denote like parts. The surface formed by a plate-shaped region at the upper end of the carrier has in particular the total of eight holes 6 shown in FIG. 1, which are not visible in FIG. 5, because a screw 85 extends through the bores 6 in each case its lower end is secured by a nut 87 against loosening and falling out. In this case, the screws 85 hold in pairs a groove body 71, which has a longitudinal direction (from the right rear to left front running in Fig. 5) consistent cross-sectional profile and in the embodiment has a U-shaped profile. As shown in FIG. 6, these groove body 71 can be arranged in C-shaped grooves 83, 84, wherein the opening of the grooves 83, 84 down a passage of the shafts of

Screws 85 allows. It is located between the plate-shaped upper end of the longitudinal strut 2a and the nut 87 each have a spacer 81 a, 81 b, which facilitates the assembly and to a uniform pressing of each other

screwed parts results when the nuts 87 are tightened. A rotation of the heads of the screws 85 is prevented by the groove body 71.

The C-profile-shaped, mutually parallel grooves 83, 84 are preferably arranged on the underside of one of the longitudinal members 24 (in the example of FIG. 6, longitudinal members 24a). The corresponding area in the specific embodiment of FIG. 2 is located below the longitudinal member 24a and is marked by an arrow with the reference numeral 83 to indicate that, among other things, the groove 83 is located in the area. The grooves 83, 84 and corresponding grooves on the other side of the car body on the other side member need not extend over the entire length of the side member. Rather, the grooves extend, for example, over a longitudinal section over which the longitudinal position of the underbody support is to be freely adjusted.

The devices illustrated in FIG. 7 are arranged in the receiving space, which is delimited, for example, by the underfloor construction explained with reference to FIGS. 3 and 4. The same reference numerals in Fig. 7 as in Figs. 3 and 4 denote the same parts. For example, the facilities are different

Liquid container 201, 202, an electric distribution device 204 to be cooled, a ventilation device 205 to be cooled, gas tank 206, a transformer to be cooled 207 and cooling converter 208 and a cooling device 209. Preferably, all these devices are on a plate-shaped element and / or a carrier of

Underbody construction placed so that they exert their entire weight or at least almost the entire weight on the U-shaped underbody support 101 - 108.

The partial representation of an underbody support 1 and two plate-shaped elements 91 a, 91 b shown in FIG. 8 illustrates that it is possible to dispense with longitudinal struts which connect adjacent underbody supports. Again, like reference numerals designate the same parts as in other figures. The carrier 1 is therefore, for example, the carrier shown in FIGS. 1 and 2. However, you can also do it with others

Embodiments of U-shaped underbody supports plate-shaped elements of screwed down or otherwise secured from below, as will be described with reference to FIGS. 8-10.

The plate-shaped elements 91 a, 91 b are provided at their ends which are arranged at a small distance from one another in the region of the support 1, each with a vertical cross-section Y-shaped profile which surrounds the end of the plate-shaped support 91 and a from has the end-extending plate-shaped part having through holes for passing screws 93 (see Fig. 10). The underside of the carrier 1 is provided with corresponding holes with internal thread into which the screws 93 are screwed. In the reverse view of Fig. 10 showing the bottom of the assembly, the heads of the screws 93 are visible, including a spacer 98 and again below the projecting plate-shaped element of the profile 94, which covers the underside of the carrier 1. In this way, not only, as shown in Fig. 9, two plates 91 are secured to the underside of the carrier 1, but in the same way, for example, another four plates, two of which fastened symmetrically to the median plane of the carrier on the other longitudinal strut 2a and two more plates fill the gap between the marginal plates.

In Figure 1 1 is shown schematically the air flow from the environment of the rail vehicle through an air inlet opening 307, a fan 309, a device to be cooled 315 and again out of the receiving space 301 through an air outlet opening 31 1 in the environment. The presentation is simplified. There may be provided other components, in particular dirt particle filter at the air inlet opening 307 and barriers for dirt at the air outlet opening 31 1 to prevent at occasionally reversed air pressure ratios to prevent ingress of dirt. Also, the air inlet does not have to take place at the same position in the longitudinal direction of the rail vehicle on which the fan is located. The same applies to the position of the air outlet opening in the longitudinal direction of the rail vehicle. The longitudinal direction of the rail vehicle runs in Fig. 1 1 and Fig. 12 perpendicular to the plane of the figure. The reason why the air inlet opening and the fan do not have to be at the same position or not in the same longitudinal section is that the accommodating space 301 is inserted

contains continuous main air volume. In particular, therefore, the air can flow perpendicular to the plane of the figure 1 1 and 12, in particular between the device to be cooled 315 and the side walls 317a, 317b in the areas from which the fan or the fan to divert air and feed the devices to be cooled.

Fig. 12 shows that this air flow is also possible at longitudinal positions in which an underbody carrier 300 is located, the z. B. the underbody support 1 shown in Fig. 1 may be. Furthermore, FIG. 12 shows that cable ducts 320, 321 can be located below the vehicle body floor 313, but above a device 315 to be cooled, in which cables extending in particular in the longitudinal direction of the rail vehicle can be laid, as indicated in FIG. 12 by the reference numeral 323 are designated.

FIG. 13 schematically shows the arrangement of devices within a subfloor receiving space 401. This may in particular be the receiving space between the two bogies of a driven rail vehicle (eg a high-speed power car), the drive motors (traction motors) in the bogies and the bogies themselves not being shown in FIG. However, air supply passages 405a, 405b outgoing air supply passages 405a, 405b from the take-up space 401 are arranged from drive motor fans 403a, 403b arranged inside the take-up room 401 to the

Traction motors of one of the neighboring bogies. The air taken in by the traction motor fans 403 from the main air ducts of the accommodating space 401 flows through these air supply passages 405 to the traction motors.

Preferably in the center (with respect to the direction transverse to the direction of travel of

Rail vehicle; the direction of travel runs from top to bottom in FIG. 13) several devices and units to be cooled are arranged. In this case, three units 41 1, 412, 413 combined to form a common device to be cooled, d. H. The units 41 1, 412, 413, a common fan 410 is assigned. In the particular embodiment, the fan 410 is bisected (as indicated by a diagonal hyphen) and conveys cooling air in the lower right portion to the unit 41 1 and in the lower left portion to the units 412, 413 serially from the cooling air to be flowed through. The units 41 1, 412, 413 may in particular be different converters, in particular a traction converter 41 1, a supply-side rectifier 412 and an auxiliary inverter 413.

Furthermore, a further device 417 to be cooled 417 is shown in FIG. 13, to which a further fan 415 is assigned. The fan 415 sucks air from the main air volume of the receiving space 401 and delivers it to the device to be cooled 417, in which it is z. B. may be a battery charger that charges a battery, not shown in FIG. 13, of electrical and / or electrochemical energy storage devices for storing electrical energy.

The air flows generated by the fans 410, 415 and optionally other fans lead past the facilities to be cooled and / or through the to be cooled

Devices through and preferably exit through in each case by an air outlet opening 419, 420, 421 in the lower bottom of the receiving space 401 in the environment, the

Air outlet openings 419, 420, 421 are shown in Fig. 13 by a dashed frame.

It can clearly be seen from the arrows representing the air flow in FIG. 13 that the air which enters the receiving space 401 through air inlet openings 424 to 427 can be distributed in the longitudinal direction of the receiving space (from top to bottom in FIG. 13) ,

In the embodiment shown in Fig. 13 are located in the front part of

Recording space (bottom in the figure) no air inlet openings, since there may arise due to high speeds outside the outside of the receiving space 401. Due to the large, continuous main air volume but also the air flows to the traction motor fans 403 and the fan 410 are ensured without being significantly slowed down.

Claims

claims

1 . Rail vehicle, in particular a train part of a high-speed train, wherein

The rail vehicle has a body (1 1, 13) with a bottom (13)

comprising a body compartment (17) for transporting persons and / or cargo below,

• below the bottom (13) has a receiving space (301, 401) for receiving

41 1, 412, 413, 417) of the vehicle is formed, wherein the receiving space (301, 401) is bounded on all sides, at least one air inlet opening (307; 424, 425, 426, 427) and at least one air outlet opening (139, 419, 420, 421) and is secured against ingress of dirt,

The at least one air inlet opening (307; 424, 425, 426, 427) has a main air volume of the receiving space (301; 401) to the surroundings of the

Rail vehicle, the main air volume containing most of the air in the receiving space (301, 401) and thus forming a reservoir for cooling air,

At least one device (15; 204, 205, 207, 208; 41 1, 412, 413, 417) is arranged in the receiving space (301; 401) and at least one fan (309; 410; Operation of the fan (309, 410, 415) Accelerates air from the main volume of air so that air flows to at least one device to be cooled located inside or outside the receiving space.

2. Rail vehicle according to the preceding claim, wherein in the

Receiving space (401) distributed in the longitudinal direction of the rail vehicle over a longitudinal portion of the receiving space (401) a plurality of means (410, 41 1, 412, 413, 415, 417) of the vehicle is arranged, wherein the main air volume at least over the longitudinal portion and the main air volume in the longitudinal section is continuous, ie not divided into individual, separate and mutually partitioned compartments, and wherein in a front region of the longitudinal section in which at least one (410, 41 1) of the devices (410 , 41 1, 412, 413, 415, 417) of the vehicle, in side walls of the receiving space (401) no air inlet opening is present, but in a more rearwardly disposed region of the longitudinal section in the side walls of the receiving space (401) air inlet openings are arranged through the air can enter the main volume of the receiving space (401).

3. Rail vehicle according to one of the preceding claims, wherein the receiving space on the maximum available in the underfloor area length in the direction of travel of the rail vehicle between two bogies of the

Rail vehicle extends.

A railway vehicle according to any one of the preceding claims, wherein a plurality of the means (15; 204,205,207,208; 41,1412,413,417) to be cooled are disposed in the receiving space (301; 401) and each of the plurality at least one fan (309, 410, 415) is associated with the devices (15; 204, 205, 207, 208; 41 1, 412, 413, 417) to be cooled, which during operation of the fan (309; 410, 415) air accelerated from the main volume of air, so that air to the associated to be cooled

(315; 41 1, 412, 413, 417) device flows and cools.

5. Rail vehicle according to one of the preceding claims, wherein the

predominantly the weight forces of the at least one device (15, 204, 205, 207, 208, 41, 412, 413, 417) to be cooled are exerted downward onto a substructure (1, 300) of the receiving space (301, 401) and about the

Substructure (1; 300) act on the car body (1 1, 13), so that above the at least one device to be cooled (15; 204, 205, 207, 208; 41 1, 412,

413, 417) there is a free space to the bottom (13) of the car body interior (17).

6. Rail vehicle according to one of the preceding claims, wherein in each case in a transition region between the bottom (13) and the side walls (1 1) of the car body interior (17) has a longitudinal member (24) for the transmission of

Longitudinal forces which extends in the longitudinal direction of the car body (1 1, 13), wherein the car body (1 1, 13) at least one underbody support (1; 300), which extends below the bottom (13) of the one longitudinal carrier (24a) to the other side rail (24b), the underbody beam (1; 300) extending partially at a distance from the floor (13) so as to extend between the underbody beam (1; 300) and the floor (13) a part of the receiving space (301; 401) is located.

7. Rail vehicle according to one of the preceding claims, wherein the at least one device to be cooled (15, 204, 205, 207, 208, 41 1, 412, 413, 417) within the receiving space at a distance from at least one side wall of the receiving space (301; 401) is arranged so that a space remains between the device and the side wall, which forms a part of the main air volume.

8. A method for producing a rail vehicle, in particular a tensile part of a high-speed train, wherein

For the rail vehicle, a car body (11, 13) is provided which has a bottom (13) which delimits a car body interior (17) for the transport of persons and / or cargo below,

• below the bottom (13) has a receiving space (301, 401) for receiving

41, 412, 413, 417) of the vehicle is formed, wherein the receiving space (301, 401) is bounded on all sides, wherein at least one air inlet opening (307 424, 425, 426, 427) and at least one air outlet opening (139, 419, 420, 421) of the receiving space (301, 401) are provided and the receiving space (301, 401) against

The ingress of dirt is ensured

The at least one air inlet opening (307; 424, 425, 426, 427) is provided so that a main air volume of the receiving space (301; 401) opens to the surroundings of the rail vehicle, the main air volume being the predominant part of the air in the receiving space (301, 401) and thus forms a reservoir for cooling air,

At least one device (15; 204, 205, 207, 208; 41 1, 412, 413, 417) is arranged in the receiving space (301; 401) and at least one fan (309; 410; Operation of the fan (309, 410, 415) Accelerates air from the main volume of air so that air flows to at least one device (15; 204, 205, 207, 208; 41 1, 412, 413, 417) to be cooled.

9. Method according to the preceding claim, wherein the at least one

Air inlet opening (307, 424, 425, 426, 427) or at least one of

Air inlet openings (307, 424, 425, 426, 427) as a recess in a side wall of the receiving space (301, 401) is formed.

10. The method according to any one of the preceding claims, wherein a plurality of the devices to be cooled (15, 204, 205, 207, 208, 41 1, 412, 413, 417) in the

At least one fan (309, 410, 415) is assigned to each of the plurality of devices to be cooled (15; 204, 205, 207, 208; 41 1, 412, 413, 417) during operation of the fan (309, 410, 415) air from the Main air volume accelerates so that air flows to and cools the associated device (15, 204, 205, 207, 208, 41 1, 412, 413, 417) to be cooled.

1 1. Method according to one of the preceding claims, wherein the predominant part of the weight forces of the at least one device (15; 204, 205, 207, 208; 41 1, 412, 413, 417) to be cooled down onto a substructure (1; 300) of the

On the car body (1 1, 13) act on the substructure (1; 300), so that above the at least one device to be cooled (15; 204, 205, 207, 208, 41 1, 412, 413, 417) there is a free space to the bottom (13) of the car body interior (17).

12. The method according to any one of the preceding claims, wherein in each case in one

Transition region between the bottom (13) and the side walls (1 1) of the car body interior (17) has a longitudinal member (24) for the transmission of

Longitudinal forces is arranged so that it extends in the longitudinal direction of the car body (1 1, 13), wherein at least one underbody support (1; 300) is provided, which extends below the bottom (13) of the one longitudinal carrier (24 a) to the another longitudinal beam (24b), wherein the underbody support (1; 300) partially extends at a distance to the bottom (13), so that a part between the underbody support (1; 300) and the bottom (13) of the receiving space (301; 401).

13. The method according to any one of the preceding claims, wherein the at least one device to be cooled (15; 204, 205, 207, 208; 41 1, 412, 413, 417) within the receiving space at a distance from at least one side wall of the receiving space (301; 401) is arranged so that a space remains between the device and the side wall, which forms a part of the main air volume.