SCHIENENFAHRZEUG MIT EINEM VERKLEIDETEN DREHGESTELL

description

Rail vehicle with a disguised bogie The invention relates to a rail vehicle having a bogie which is lined such that a

Drehgestellkavität is present which is formed by a Verkleidungsanord ^¬ voltage and the bogie adjacent walls in the underfloor region of the rail vehicle, and with a device for producing pressurized air.

Such a rail vehicle is known, for example from DE 10 2004 041 090 AI. In particular with rail vehicles which are used in high-speed traffic, are bogies of the rail vehicle for reducing a

Drag largely covered. In this case, such a fairing extends, for example, partially beneath a bogie frame, possibly even obliquely upward to the front or rear side of the bogie. Together with subsequent adjoining / adjacent walls of the railway vehicle, the bogie is thus embedded into a cavity. Depending on a sealing this cavity, this flows through, especially at high vehicle speeds of ambient air. Cause the guided past the bogie high air masses that in particular air by the rail vehicle affected in the Drehgestellkavität been a ^¬ penetrates and there was an increase in the running resistance of the rail vehicle result. This concerns in particular seen in the direction of travel of the rail vehicle, the first bogie.

In addition, the limited tightness of Drehgestellkavität has the disadvantage that dirt and / or loaded (in winter) with snow particles into the air penetrates Drehgestellkavität ein35 and registered particles can settle there. This leads to increased maintenance costs or even damage. Has the limited tightness of Drehgestellkavität thus negative consequences for both the flow resistance of the slide ^¬ nenfahrzeugs, especially when it is a Hochgeschwin ^¬ digkeitsfahrzeug, and for the maintenance in the area of bogies.

Based on this, the invention has the object to provide a railway vehicle of the initially mentioned type in such a wei ^¬ terzuentwickeln that the negative consequences of the limited tightness of Drehgestellkavität be reduced.

This object is achieved by a railway vehicle with the Merkma ^¬ len of claim 1. Thereafter, it is provided in the rail vehicle of the aforementioned type in that the device for generating

, Pressurized air to an air intake device in the walls of the Drehgestellkavität is such fluidly connected that the air is blown into the Drehgestellkavität.

By blowing the pressurized air into the

Drehgestellkavität it possible to increase the pressure within the Drehgestellkavität such that the

Drehgestellkavität flowing air masses reduces the ^¬. A reduction in the flow through the cavity lowers the driving resistance. This goes along with the fact that registered amounts of dust particles and in winter snow are also reduced with the air masses.

The proposed air intake device may be provided for example in a located above the bogie Bodenplattenab ^¬ section of the rail vehicle. In this case, pressurized air is supplied from a located at any point within the rail vehicle place the pre ^¬ out direction and for generating pressurized air to the bottom plate portion is blown over the intended air ^¬ intake device in the Drehgestellkavität. The direction of flow of the pressurized air within the Drehgestellkavität would substantially vertically downward in the direction of the bogie. In an alternative or supplemented embodiment of the walls of the Drehgestellkavität in the longitudinal direction of the rail vehicle can be located before and behind the bogie include bulkheads, said air inlet means is provided in at least one of the bulkheads. Such bulkhead walls in front of and behind the bogie typically in a substantially vertical orientation. Via one or both bulkheads blown pressurized air then flows substantially horizontally along the Drehge ^¬ stells.

Regardless of the direction of air injection into the

Drehgestellkavität may be the air intake apparatus for planar injection of the air into the Drehgestellkavität out ^¬ forms. In the case of air injection on the Bodenplat- tenabschnitt example, the entire region of the Bo ^¬ denplatte which is above the bogie, to

Air injection are used. Here, the air inlet ^¬ device in the form of a hole pattern which is incorporated in the Bodenplat ^¬ tenabschnitt be present. The hole pattern may be widely disseminated. Alternatively, it may be in the blowing well to individual pipes / nozzles, also distributed surface, one or more channels or simply be a large pipe. All other types of passages (grid, ...) are also possible for the injection of the pressurized air.

In the case of possibly additional air injection over the bulkhead walls, the air intake apparatus can be formed as a pattern of holes in a corresponding manner. This hole pattern may comprise large portions or even a total area of ​​the bulkhead.

It is also possible that the air intake apparatus is configured for selective injection of the air into the Drehgestellkavität. In this case, a cross section of a ^¬ blown air masses is limited. In addition, it can be provided that the air intake apparatus as projecting into the Drehgestellkavität nozzle (or tube) is formed. In this way, an increased air pressure in the Drehgestellkavität can produce. With regard to high-risk areas bogie in terms of accumulation of snow particles in winter, one or more such jets can also be directed to high-risk areas bogie.

For the device for generating pressurized air any available source can be considered within a rail running ^¬ zeugs. Even a single fan, the example ^¬ as cooling air to a heat-dissipating component to the slide ^¬ nenfahrzeugs passes, is suitable to be used as a device for producing pressurized air. In such a case the heated cooling air after passing through the heat-dissipating component is to continue in the direction of

Drehgestellkavität out, so that they can be blown via the air inlet into the device ^¬ Drehgestellkavität. For example, the device is capable of generating

pressurized air formed by an exhaust air device of an air-conditioning device of the rail vehicle. Age ^¬ native or additionally, it is also possible that this device is formed by a transformer or a Stromrichterküh- 1er the rail vehicle. In all cases, for the formation of the device for generating

pressurized air, the feature of the Drehgestellkavität to ^¬ out air over an increased temperature, so that by appropriately blowing the air, for example the GR nigstens a nozzle selectively deposits of snow in

can be reduced bogies. There is an accumulating the inserted coming into the Drehgestellkavität Schneepar- Tikel or a melting existing deposits of snow by an elevated temperature of the pressurized air.

Side effect of the illustrated embodiments for the preliminary direction for generating pressurized air is that meets the respective air compared to their conventional function of a further purpose. is only required a suitable conduit arrangement for feeding the air toward the Drehgestellkavität.

The means for generating pressurized air can be controlled so that the in the Drehgestellkavität he ^¬ sired pressure is at least a bar. Basically, it is desirable if the pressure inside the

Drehgestellkavität at least corresponds to the applied pressure of the ambient air ^¬ Conversely, because in this case, an inflow of the outside air is effectively reduced in the Drehgestellkavität. Thus, in a standard pressure outside of the bogie of 101325 Pa the pressure in the Drehgestellkavität may be greater than 101825 Pa, preferably greater than 102325 Pa and particularly be ^¬ vorzugt greater than 102825 Pa be.

Embodiments of the invention will be explained in more detail below with reference to the drawings, wherein functionally equivalent components are designated by the same reference numerals. Show it:

Figure 1 is a schematic cross-sectional view of a

Bogie frame of a railway vehicle in a first embodiment;

Figure 2 is a schematic cross-sectional view of a

Bogie frame of a rail vehicle in a second embodiment,

Figure 3 is a schematic cross-sectional view of a

Bogie frame of a rail vehicle in a third embodiment, Figure 4 is a schematic cross-sectional view of a

Bogie frame of a rail vehicle in a fourth embodiment,

Figure 5 is a schematic cross-sectional view of a

Bogie frame of a rail vehicle in a fifth embodiment.

From 1 shows a bogie of a rail vehicle area is clear. A bogie 1 includes in a conventional manner on a bogie frame 2, are mounted on the wheels 3 of the bogie. 1 The bogie 1 is provided with an encryption clothing 4 is provided having an interior, horizontally between the wheels duri ^¬ fenden under ^¬ half of the bogie frame 2 3, section 5 and two obliquely upwardly extending to the section 5 in front and behind the bogie frame 2 portions 6 having. With the aid of the bogie panel 4, the bogie is also covered laterally both downwardly, so that inflowing outside air can substantially pass therethrough only through gaps between the outer free edges of the covering portions 6 and the closest region of the rail vehicle car body.

The bogie 1 is angeord ^¬ net in a Drehgestellkavität 7, which is limited by the bogie panel 4 downward. After the above Drehgestellkavität 7 is limited by ei ^¬ NEN bottom plate portion 8 of the rail vehicle, while the Drehgestellkavität 7 is formed laterally in the longitudinal direction of the rail vehicle by bulkheads. 9 The partition walls 9 extend vertically downwards and limit the relevant here bottom plate portion 8 in the longitudinal direction of the rail vehicle.

By the aforementioned gaps between the outer edges of the covering portions 6 and the rail vehicle car body inflowing outside air collects in the Drehgestellkavität 7 and caused thus, in particular in high speed ^¬ trains a considerable driving resistance, while in addition, for example, dirt particles are carried into the Drehgestellkavität 7 is a ^¬.

To reduce driving resistance and the entry of dirt particles (in winter snow) is in the

Drehgestellkavität 7 blown pressurized air. The source of pressurized air in principle all the facilities of the rail vehicle in question, which generate some kind of exhaust air. Pressurized air may also come from a "traditional" compressed air system, such as the main air compressor (produces compressed air for the brake and Panto etc.)., Is conceivable also separately in addition to install a system just for this purpose, if you will deliberately avoid Schneeanlagerung eg. Driving resistance Technically If such a procedure, however, expected to be disadvantageous. Examples of a device for producing pressurized air 10 are various cooling units of

Rail vehicle, such as a transformer cooler or a power converter cooler, which typically are arranged under the floor of the rail vehicle and are therefore in the vicinity of the bogie. 1 However, the device 10 for generating pressurized air can also be formed from an exhaust air device of an air-conditioning device of the rail vehicle, which typically is more likely in the roof area of ​​the rail vehicle. Pending on the type of the apparatus used to produce 10

pressurized air are fluidic Verbindun- gen to the Drehgestellkavität 7 to produce. In execution ^¬ example according to FIG 1 there is a Leitungsanord ^¬ voltage 11 between the device 10 for generating

pressurized air, and in the illustrated embodiment, two air intake devices 11, which are arranged in the region of the bottom plate portion. 8 The Lufteinlassvor ^¬ direction 11 can be re ^¬ alisiert example in the form of a hole pattern. The hole pattern extending over the entire bottom plate portion 8 which forms the upper wall of the Drehgestellkavität 7 except a central portion, in which a transverse beam of the bogie frame 2 and a

Secondary suspension for the rail vehicle is located. Insofar as the insufflation of pressurized air takes place in a flat manner. The blowing air causes a 7 prevailing pressure is increased in the ^¬ nerhalb Drehgestellkavität. This has the result that an air cushion forms outside Undichtig ^¬ speeds of Drehgestellkavität 7 to an air outlet surface to the environment, which reduces the penetration of outside air into the Drehgestellkavität 7, and hence the running resistance of the bogie. 1 Gleichzei ^¬ tig also an entry of dirt or snow particles is reduced in the Drehgestellkavität. 7 In view of the nature of the apparatus 10 used to produce

pressurized air is to be noted that in all the illustrated embodiments, the air of increased tempera ture, so that during operation of the rail vehicle in winter itself already of deposited snow in

Can be melted Drehgestellkavität 7 and thus at least partially ^¬ be removed.

The embodiments illustrated with reference to Figures 2 to 5 have with reference to FIG 1 described jointly that a blowing pressurized air is used to generate in the Drehgestellkavität 7, an air cushion which counteracts the penetration of outside air. Modifications can be found primarily in the realization of the injection of the pressurized air. In fi gure 2, the device 10 is to generate

pressurized air at air inlet devices 12 in connection, which are provided in the bulkheads 9 of the Drehgestellkavität. 7 Here, the blowing takes place

Thus, pressurized air in the horizontal direction of the rail vehicle in the long Drehgestellkavität 7 towards ^¬ a. In the embodiment of Figure 3 takes the

Air injection on the bulkhead 9 surface, that is, while the insufflation is carried out selectively over the entire width and height of the partition wall 9 in Figure 4, ie beispielswei- se over a region 13 which extends over less than 25% of the area of ​​the bulkhead 9 , Blowing the

pressurized air is taken prior-in Figure 3 by means of a check-fitted dimensioned air intake apparatus 14 and in Figure 4 with an appropriately dimensioned air inlet device 15 °.

In the embodiment of Figure 5, the

pressurized air, in turn generated by the Vorrich ^¬ processing 10 and forwarded to the Drehgestellkavität via the conduit assembly 11 via a blown into ^¬ projecting into the nozzle 7 Drehgestellkavität sixteenth The illustrated Dü ^¬ se 16 is representative of a possible majority gleicharti ^¬ ger jets that can be directed to the bogie areas that are particularly at risk with regard to deposits of dirt and / or snow. The nozzle 16 may be connected, for example via a tube portion to the line arrangement. 11

All of the embodiments illustrated have in common that the air resistance of the rail vehicle, in particular one for the high-speed transport is reduced. This is basically achieved by a considerably more favorable, poorer resistance flow around the bogie by the vehicle-generated pressurized air. It is also noteworthy that the air sucked to the cooling of other components or for the air conditioner of the rail vehicle, and thus in the further use of resistance ^¬ neutral air is used again to reduce the air resistance and to bring the aerodynamic protection against contamination of the Drehgestellkavität. 7