EP2602167A1 - Sliding step assembly for a rail vehicle - Google Patents

Abstract

The assembly (1) has a plate-shaped housing (3) fastenable at a coach body (2) of a rail vehicle and provided with a housing opening (3.1) i.e. gap. A step (4) is movably mounted in the housing in a starting position and movable via the opening between the starting and end positions. A drive device is provided with a movable connection unit (5.2), which transfers a movement produced by a motor (5.1) to the step. The drive device is arranged in a separate another plate-shaped housing (6), where an interior of the former housing is spatially separated from an interior of the latter housing. An independent claim is also included for a rail vehicle.

Description

The invention relates to a Schiebetrittanordnung for a rail vehicle with a fastened to a car body of the rail vehicle first housing having a first housing opening, with a tread, the movably mounted in a starting position in the first housing and through the first housing opening between the starting position and an end position, in the the tread at least partially protrudes from the first housing, is movable, and with a drive means for the tread with a motor and at least one movable connecting means which transmits a movement generated by the motor on the tread. Furthermore, the invention relates to a rail vehicle with such a Schiebetrittanordnung.

Sliding tread arrangements in which a step from a cassette, hereinafter referred to as housing, can be extended are used in rail vehicles, on the one hand to ensure the operation of lower platform heights and on the other hand to minimize the gap between the body of the rail vehicle and the platform. Often, there is insufficient space available within the car body for the structural integration of the Schiebetrittanordnung, which is why the cassette-like housing is mounted with the movable tread and all its guiding and driving elements in this case under the car body. Moreover, it is also known to mount the tread in a receptacle in the shell construction of the car body.

But there are also cases conceivable in which, for structural reasons, each of the two mounting alternatives, that is, both the installation of Schiebetrittkassette under the car body and the assembly in a receptacle in the shell construction, would lead to undesirable disadvantages. Thus, for example, a mounting below the car body and thus inevitably outside in particular in the operation of a rail vehicle in regions disadvantageous in which temperatures of -40 ° C or less occur, for example, in Scandinavia in winter. At such temperatures, the drive elements of the Schiebetrittanordnung can be stiff and often even freeze. In the sliding door and its drive and control enclosing housing can penetrate despite all seals flying snow, or the incoming from the platform sliding step transported adhering snow and condensation in the housing, so that drive and control elements are blocked or damaged. To ensure improved winter performance, it is for example from the EP 1 386 818 A1 it is known to provide a separate drying space for receiving the motor and control in a sliding step arrangement for a rail vehicle within the cassette. The DE 10 2008 061 852 A1 also describes measures to increase the winter strength of a Schiebetrittanordnung, are incorporated in the sliding step and drive and control elements in a cassette-like housing.

On the other hand, arranging the Schiebetrittanordnung in a receptacle in the shell construction to a lead unwanted weakening of the shell construction by interrupted in the door area of the per se continuous side member of the car body and deflected. The EP 1 792 801 A2 has a Schiebetrittanordnung the object in which the tread performs a parabolic movement from the starting position to the end position, whereby the housing for the tread to avoid undesirable weakening of the shell construction must not necessarily be arranged in the same plane in which the tread in their Starting position for bridging the gap between car body and platform is located.

It is therefore an object of the present invention to provide a Schiebetrittanordnung for a rail vehicle, which takes up as little space and at the same time has improved winter performance.

The previously derived and indicated object is according to a first teaching of the present invention in a Schiebetrittanordnung for a rail vehicle with a fastened to a car body of the rail vehicle first housing with a first housing opening, with a tread, which is movably supported and in an initial position in the first housing the first housing opening between the starting position and an end position, in which the tread at least partially protrudes from the first housing, is movable, and with a drive means for the tread with a motor and at least one movable connecting means, the motor generated movement on the tread transmits, whereby the tread can be moved either in the direction of the starting position or in the direction of the end position, achieved by a The second housing is provided in which the drive device is arranged and in particular fixed, wherein the interior of the first housing - meaning the space enclosed by the first housing, hereinafter also referred to as first housing atmosphere - from the interior of the second housing - is meant by second housing enclosed space, hereinafter also referred to as the second housing atmosphere - spatially and / or hermetically separated. Hermetically means in the context of the present invention is substantially airtight, so that no or only a difficult air exchange or pressure equalization between the first housing and the second housing takes place.

By a separate second housing is provided according to the invention, which serves to receive the drive means, and a spatial separation between the first and second housing is provided, allows the drive device, which includes at least the engine with transmission components, optionally also a motor control, spatially from the step and the Ausschub, that is the leadership to separate. In this way, the drive device can be placed independently of the tread. The space between the drive device and tread is bridged by the connecting means, such as drive rods. In this way, the entire Schiebetrittanordnung can be made very flat and placed in a relatively shallow area between shell construction and floor of the car body and takes up correspondingly little space. The limited space in the floor area of the outer doors is thus used optimally, and in the course and the stability of the side members of the car body must therefore not be interfered.

A hermetic separation, that is, an atmospheric separation, has the advantage that by the inevitable gap, that is said first housing opening for extending the tread in the first housing, no outside air from outside the rail vehicle into the interior of the car body and in particular to the temperature-sensitive components the drive and control device of the sliding step can get. As a result, the pressure-tightness of the passenger compartment is ensured, which is particularly important for high-speed vehicles. The components of the drive device are protected from external influences such as rainwater, snow and ice, dirt, strong temperature fluctuations or aerodynamic loads during operation. In other words, an optimal winter strength is guaranteed. In providing appropriate access openings in the floor of the car body both the tread and the drive device can also be maintained and mounted in a particularly simple manner, since both tread and drive means can be arranged by the inventively provided structure readily vertically below the floor of the car body.

According to one embodiment of the sliding step arrangement according to the invention, the interior of the first housing communicates only with the outside atmosphere outside the rail vehicle. As a result, the same pressure prevails in the first housing and possibly the same temperature as outside the rail vehicle. As I said, but the atmosphere in the second housing and in particular the atmosphere in the interior of the entire car body compared to the first Housing atmosphere and thus the outside atmosphere sealed off the rail vehicle. The first housing is so hermetically sealed except for the slot-shaped first housing opening, through which the tread is retracted and extended.

Correspondingly, the interior of the second housing can only communicate with the internal atmosphere within the car body, which means that in the second housing the same pressure and optionally the same temperature as in the car body prevails. Alternatively, it is also conceivable that in the second housing has its own atmosphere, which is also hermetically sealed against the interior atmosphere within the car body. In other words, while the second housing is not necessarily hermetic, but is necessarily hermetically separated from the interior of the first housing.

According to a further embodiment of the sliding step arrangement according to the invention, the first housing and / or the second housing has at least one inspection opening. By means of such an inspection opening, the components of the sliding step arrangement which are accessible from above can be easily maintained and optionally mounted and / or exchanged.

In order to facilitate the maintenance and installation, the respective inspection opening and can in particular all inspection openings open into the interior of the car body. In this case, at least the inspection opening of the first housing with a revision cover hermetically sealed. If the second housing also has an inspection opening opening into the interior of the car body, then so too These, but not mandatory, are hermetically closed.

According to yet another embodiment of the Schiebetrittanordnung invention, the drive device is a preassembled structural unit, that is, a so-called mounting unit, which considerably simplifies the final assembly. Thus, the drive means may be preassembled in an operation specialized in the assembly of drive means and then transported to the place of final assembly where the drive means may then be incorporated as a whole, ie as a single piece, at the designated location. In this case, the structural unit is fastened in particular detachably as a whole in the second housing. Detachable means that the structural unit can be easily removed from the housing. In principle, however, it is also conceivable that the drive device together with the second housing forms a preassembled structural unit. Then, the second housing can be attached to the built-in components of the drive device in a particularly simple manner in one operation on the car body. By all the components that make up the drive device, are already pre-assembled in the second housing, they are particularly well protected during maintenance and installation work, so if the drive device is moved when installing or removing.

However, the components forming the drive device can also be connected to one another via a common carrier plate, so that therefore carrier plate and the components of the drive device form the structural unit. The support plate is preferably used for fastening the structural unit in the second housing. As already mentioned above, the drive device and thus the possibly preassembled structural unit comprises at least the engine and the transmission components and optionally a motor control. Also, the connecting means for transmitting the motor-generated movement to the tread may be part of the structural unit.

In principle, it is also conceivable that the tread is part of a structural unit, for example, together with the Ausschub. Even such a structural unit can be releasably secured as a whole in the first housing.

According to yet another embodiment of the invention Schiebetrittanordnung the at least one connecting means is a drive rod which connects the drive means, in particular the motor, with the tread. In principle, however, two, in particular parallel, drive rods can be used to connect the drive device and tread. Such drive rods are particularly well suited to bridge the distance between the drive device, in particular motor with gear components, and the tread in a stable manner. Drive rods can be in a particularly simple manner by appropriately sealed passages, hereinafter referred to as so-called connection openings lead. It is conceivable that the at least one connecting means, in particular when it is a drive rod, is guided through a connecting opening which is provided in the first housing and in the second housing. As the implementation of the bonding agent, in particular the Drive rod, serving connection opening in the first housing and / or in the second housing is preferably sealed to ensure the hermetic separation between the interior of the first housing and the interior of the second housing. If two connection means or two drive rods are provided, then each of these connection means can be guided through its own connection opening in the first housing and in the second housing, whereby in this case as well a corresponding seal must be provided for each connection means or each drive rod.

The object is further achieved according to a second teaching by a rail vehicle with a Schiebetrittanordnung, as previously described.

According to one embodiment of the rail vehicle according to the invention, the first housing and / or the second housing is firmly connected to the car body, in particular welded or screwed. Preferably, at least the first housing is permanently connected to the car body, in particular welded. As already described above, the second housing can be detachable from the vehicle body as a whole as a whole, in which case it is preferably connected to the vehicle body by screwing. In principle, however, the second housing may be welded to the car body.

According to yet another embodiment of the rail vehicle according to the invention, the inspection opening of the first housing opens into the interior of the car body and is hermetically sealed with a revision cover. Alternatively or In addition, the inspection opening of the second housing can also open into the interior of the car body and be closed with a revision cover. As described, however, the second housing does not necessarily have to be hermetically sealed.

In the rail vehicle according to the invention is further provided according to yet a further embodiment that the first housing under the floor - is vertically disposed below the floor - of the car body, preferably at least one inspection opening in the floor vertically above the first housing, in particular vertically above the at least one inspection opening of the first housing, is arranged. In this way, maintenance and installation work on the tread can be carried out in a particularly simple manner.

According to yet another embodiment of the rail vehicle according to the invention, the second housing is arranged under the floor - meaning vertically below the floor - of the car body. Also in this case, at least one inspection opening in the floor can be provided vertically above the second housing. This inspection opening is in particular configured, thus has in particular such dimensions and / or a shape that the second housing or the structural unit forming the drive device can be guided through the inspection opening.

Fig. 1

eine perspektivische Ansicht einer auf der Wagenkastenrohbaustruktur montierten Schiebetrittanordnung,

Fig. 2a)

eine schematische Ansicht eines Schienenfahrzeugs,

Fig. 2b)

eine perspektivische Ansicht eines Wagenkastens mit eingebauter Schiebetrittanordnung,

Fig. 3a) und b)

eine schematische Darstellung eines Wartungsvorgangs der Antriebseinrichtung der Schiebetrittanordnung von Fig. 1,

Fig. 4a) und b)

eine schematische Darstellung eines Wartungsvorgangs der Trittstufe der Schiebetrittanordnung von Fig. 1 und

Fig. 5

eine Schnittansicht eines Teils der Schiebetrittanordnung von Fig. 1.

There are now a variety of ways to design and further develop the Schiebetrittanordnung invention and the rail vehicle according to the invention. For this purpose, on the one hand, reference is made to the claims subordinate to claim 1, on the other hand to the description of embodiments in conjunction with the drawings. In the drawing shows:

Fig. 1

FIG. 2 is a perspective view of a sliding step assembly mounted on the body shell structure; FIG.

Fig. 2a)

a schematic view of a rail vehicle,

Fig. 2b)

a perspective view of a car body with built-in Schiebetrittanordnung,

Fig. 3a) and b)

a schematic representation of a maintenance operation of the drive means of the Schiebetrittanordnung of Fig. 1 .

Fig. 4a) and b)

a schematic representation of a maintenance operation of the tread of the Schiebetrittanordnung of Fig. 1 and

Fig. 5

a sectional view of a portion of the Schiebetrittanordnung of Fig. 1 ,

In Fig. 1 is a Schiebetrittanordnung 1 for a rail vehicle, of which for reasons of clarity, only a portion of the shell structure 2.2 of the car body 2 is shown here. The Schiebetrittanordnung 1 has a fixed to the car body 2 of the rail vehicle first housing 3, which has a first housing opening 3.1 in the form of a gap for performing a tread. 4 having. The tread 4 is movably mounted in a starting position in the first housing 3 and movable by the first housing opening 3.1 between the starting position and an end position in which the tread at least partially protrudes from the first housing. In Fig. 1 is the tread 4 in its initial position. Furthermore, the Schiebetrittanordnung 1 has a drive means 5 for the tread 4 with a motor 5.1, with connecting means 5.2 and with other components 5.3 such as a motor control and transmission components. The drive device 5 is in Fig. 1 arranged in a separate second housing 6, wherein only the connecting means 5.2 are visible through transparent inspection cover 3.3. The connecting means 5.2 are here two parallel drive rods which transmit a movement generated by the motor 5.1 of the drive device 5 to the tread 4 in order to move it between the starting position and the end position.

An essential feature of the present invention is that the inside of the first housing 3 is hermetically sealed, that is airtight, and spatially separated from the inside of the second housing 6 in which the driving means 5 is mounted. The interior of the first housing 3 communicates via the slot-shaped first housing opening 3.1 only with the outside atmosphere A outside of the rail vehicle, so that in the first housing 3, the same pressure and substantially the same temperature as outside of the rail vehicle prevails. The interior of the second housing 6 is not in communication with the atmosphere A in the first housing 3, but only with the internal atmosphere B within the car body 2. In the interior of the second housing 6, therefore, the same pressure prevails and essentially the same temperature as in the interior of the car body 2, in particular in the interior of the passenger compartment 2.1.

The amtospheric relations are schematically in Fig. 2a ). Fig. 2a ) shows schematically for the in Fig. 2b ) shown with closed outer door, the areas in which the outside atmosphere A prevails, and the hermetically separated therefrom areas in which the internal atmosphere B prevails.

In Fig. 2b ) is the same Schiebetrittanordnung 1 as in Fig. 1 shown, but here also the floor 8 of the car body 2 is shown. In synopsis of FIGS. 1 and 2 B ) it is clear that the two housings 3 and 6 have a space with only a very small amount of available, which is bounded below by the shell structure 2.2 and upwardly from the floor 8 of the car body 2. Accordingly, both the first housing 3 and the second housing 6 has a plate-like shape, thus has a smaller by a multiple thickness (height) compared to its length and width. For example, in the sliding door arrangement 1 according to the invention in the first housing 3, the ratio of the housing width, which corresponds essentially to the width of the door passage, to the housing thickness (housing height) is at least 5: 1, preferably at least 7: 1, particularly preferably at least 8: 1 , Im in Fig. 1 In the case illustrated, the ratio is 10: 1, that is, the width of the housing 3, which corresponds substantially to the width of the door opening above it, is 10 times greater than the housing thickness. The same ratio can also be present in the second housing 6. This shows that the housings 3 and 6 are extremely flat and thus without can be used in the already existing and otherwise unused space between floor 8 and underneath car body structure 2.2.

As Fig. 2b ) further shows, in the floor 8 two here closed inspection openings 8.1 are provided, which are arranged above the first housing 3 and in particular above the inspection openings 3.2 and the transparent inspection cover 3.3. Further towards the vehicle center, a closed inspection opening 3.2 is arranged above the second housing 6, whereby the inspection opening 6.2 or the inspection cover 6.3 of the second housing 6 is accessible through the inspection opening 8.2.

How maintenance can be carried out via the inspection openings 8.1 and 8.2 will be described below with reference to FIG FIGS. 3a), 3b ) 4a) and 4b ).

In the FIGS. 3a ) and b) the maintenance of the drive device 5 is first shown. For this purpose, first the inspection opening 8.2 is opened in the floor 8, which is indicated by a vertically upward arrow in Fig. 3a ) is represented symbolically. Subsequently, as in Fig. 3b ) is shown symbolically, the entire second housing 6 as a whole, after the connector 6.1 has been disconnected for connection to the on-board electrical system, are lifted through the inspection opening 8.2. The connecting means or drive rods 5.2 connecting the drive device 5 to the step 4 can remain underneath the floor 8 or, alternatively, can be lifted out simultaneously with the housing 6 through the inspection opening 8.2. Alternatively, after the inspection opening 8.2 is opened was, the housing 6 also remain below the floor 8 and only the inspection opening 6.2 of the housing 6 are opened.

The Fig. 4a ) and b) show a possibility of maintenance of the tread 4. First, also here the inspection opening 8.1 in the floor 8, as indicated by the vertically upwardly pointing arrow in Fig. 4a ) is shown symbolically, opened. The inspection opening 8.1 can, but this is not mandatory, be hermetically sealed. Below this is the inspection cover 3.3 of the inspection opening 3.2 of the housing 3. This inspection opening 3.2 is hermetically sealed. By removing the inspection cover 3.3, which is in Fig. 4b ) is also shown symbolically by a vertically upward arrow, the housing interior and the tread 4 is accessible.

In the FIGS. 4a ) and b) a connection opening 3.4 is further shown, through which one of the rod-shaped connecting means 5.2 can be performed to connect the drive means 5 to the tread 4. The connection opening 3.4 can be sealed by a circumferential seal which is in sealing contact with the edge of the opening on one side and with the drive rod 5.2 on the other side.

Alternatively or additionally, further seals 7 and 9 may be provided to separate the outer atmosphere A from the inner atmosphere B and in particular to hermetically separate the interior of the first housing 3 from the interior of the second housing 6. For this purpose, for example, a seal 7 may be arranged between the housing 3 and the housing 6, so that no air can pass from the housing 3 via the intermediate space between the housing 3 and the housing 6 in the car body 2. A further seal 9 serves as a seal between the first housing 3 and the overlying floor 8 of the car body 2 and prevents outside air from entering the car body 2.

Fig. 5 Finally, schematically shows the components that form the drive device 5 in the embodiment shown in the figures, including a motor 5.1 with gear components, the connecting means 5.2 forming drive rods and other components 5.3 such as a motor control, fasteners, bearing means, etc. All components are on a Support plate 5.4, which here forms the bottom of the housing 6, but in principle may also be a separate component connected to the housing 6, attached and combined to form a preassembled structural unit, a so-called mounting unit.

Claims (14)

Sliding step arrangement (1) for a rail vehicle with a first housing (3) which can be fastened to a vehicle body (2) of the rail vehicle and has a first housing opening (3.1), - With a tread (4) which is movably mounted in a starting position in the first housing (3) and by the first housing opening (3.1) between the starting position and an end position in which the tread (4) at least partially from the first housing (3 ), is movable, and - with a drive device (5) for the tread (4) with a motor (5.1) and at least one movable connecting means (5.2) which transmits a movement generated by the motor (5.1) on the tread (4),
characterized in that a separate second housing (6) is provided, in which the drive means (5) is arranged, wherein the interior of the first housing (3) from the interior of the second housing (6) is spatially separated. Sliding step assembly (1) according to claim 1, characterized in that the interior of the first housing (3) is hermetically separated from the interior of the second housing (6). Sliding step arrangement (1) according to claim 2, characterized in that the interior of the first housing (3) is only in communication with the outside atmosphere (A) outside the rail vehicle and / or the inside of the second housing (6) communicates only with the inside atmosphere (B) inside the car body (2). Sliding step arrangement (1) according to one of the preceding claims, characterized in that the first housing (3) and / or the second housing (6) has at least one inspection opening (3.2, 6.2), which opens in particular into the interior of the car body (2), wherein the respective inspection opening (3.2, 6.2) with a revision cover (3.3, 6.3) is hermetically closed. Sliding step arrangement (1) according to one of the preceding claims, characterized in that the drive device (5) is a preassembled structural unit (5), which is fastened in particular detachably as a whole in the second housing (6). Sliding step arrangement (1) according to claim 5, characterized in that the drive means (5) forming components (5.1,5.2,5.3) via a common support plate (5.4) are interconnected. Sliding step arrangement (1) according to one of the preceding claims, characterized in that the at least one connecting means (5.2) is a drive rod (5.2) which connects the drive device (5) with the tread (4). Sliding step arrangement (1) according to claim 7, characterized in that the at least one connecting means (5.2) through a connecting opening (3.4, 6.4), which is provided in each case in the first housing (3) and second housing (6), is guided hermetically sealed. Sliding step arrangement (1) according to claim 7, characterized in that the at least one connecting means (5.2) hermetically sealed by the connection opening (3.4, 6.4) is passed. Rail vehicle with a sliding step arrangement (1) according to one of the preceding claims. Rail vehicle according to claim 10, characterized in that the first housing (3) and / or the second housing (6) fixedly connected to the car body (2), in particular welded or screwed, is. Rail vehicle according to claim 10 or 11, characterized in that the inspection opening (3.2) of the first housing (3) opens into the interior of the car body (2) and with the inspection cover (3.3) is hermetically closed and / or the inspection opening (6.2) of second housing (6) in the interior of the car body (2) opens and with the inspection cover (6.3) is closable. Rail vehicle according to one of claims 10 to 12, characterized in that the first housing (3) below the floor (8) of the car body (2) is arranged, wherein preferably at least one inspection opening (8.1) in the floor (8) vertically above the first housing (3), in particular vertically above the at least one inspection opening (3.2) of the first housing (3 ) is arranged. Rail vehicle according to one of claims 10 to 13, characterized in that the second housing (6) under the floor (8) of the car body (2) is arranged, preferably at least one inspection opening (8.2) in the floor (8) vertically above the second Housing (6) is provided, which is in particular configured so that the second housing (6) or the drive means (5) forming structural unit (5) through the inspection opening (8.2) can be performed.

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