DE102018123200A1 - Device and method for overcoming a height difference and rail vehicle with the device - Google Patents

Abstract

The invention relates to a device for overcoming a height difference, the device having at least a first level and at least a second level which are spaced apart by the height difference, and the device having at least one lifting device and at least one horizontal platform unit , which is movable between the first level and the second level, wherein in each case at least one movable first stage (S11, S12) and at least one movable second stage (S21, S22) adjoin the platform unit (11), parallel to the platform unit (11 ) are arranged and can be moved between the first level (E1) and the second level (E2), - the platform unit (11), the first stage (S11, S12) and the second stage (S21, S22) using at least one lifting device are movable.

Description

The invention relates to a device and a method for overcoming a height difference and a rail vehicle with the device.

It is known that steps can make access to buildings or rail vehicles more difficult for different groups of people. These groups of people include e.g. People with reduced mobility or people with bicycles, prams and / or luggage. Transporting loads can also be made more difficult by steps. A previous measure to improve access to buildings or rail vehicles is e.g. use of an elevator. However, an elevator requires additional space and complex installation.

The publication DE 10 2017 201445 A1 describes a lifting device with movable steps for a rail vehicle. The steps are moved using articulated rods. The disadvantage here is that the articulated rods take up the weight of the steps and the user of the lift arrangement obliquely to the longitudinal axis of the articulated rods and are thereby subjected to unfavorable shear stress.

The publication KR 101090782 B1 describes a staircase with movable steps that are articulated to four strips. The strips can be arranged obliquely, the steps forming a staircase. However, two strips can also form a level with the steps, which can then be moved up and down as an elevator. The disadvantage here is that there must be a large number of steps with a corresponding size so that the level formed from the steps is large enough to accommodate a wheelchair, for example.

The publication CA 2 530 552 A1 also discloses a staircase with movable steps carried by side walls and a frame. The side walls can be moved outwards and inwards to receive or release the steps. The frame moves up and down the steps. Here, too, it is disadvantageous that a large number of steps with a corresponding size must be present in order to form a level with a sufficient size, for example for a wheelchair. In addition, the construction costs for the movable side walls are high.

The invention is therefore based on the object of providing an alternative device and an alternative method for overcoming a height difference and a rail vehicle with the device, the size of a platform unit being independent of a number and a size of the steps.

This object is achieved with a device for overcoming a height difference according to claim 1. Furthermore, the object is achieved with a method for overcoming a height difference according to claim 14 and a rail vehicle according to claim 15. Advantageous embodiments of the invention are contained in the subclaims.

• - mindestens eine erste Ebene und mindestens eine zweite Ebene aufweist, die durch die Höhendifferenz voneinander beabstandet sind, und wobei die Vorrichtung mindestens eine Hubvorrichtung und mindestens eine horizontale Plattformeinheit aufweist, die zwischen der ersten und der zweiten Ebene bewegbar ist, wobei
• - jeweils mindestens eine bewegliche erste Stufe und mindestens eine bewegliche zweite Stufe an die Plattformeinheit angrenzen, parallel zur Plattformeinheit angeordnet sind und zwischen der ersten Ebene und der zweiten Ebene bewegbar sind,
• - wobei die Plattformeinheit, die erste Stufe und die zweite Stufe mittels mindestens einer Hubvorrichtung bewegbar sind.

According to the invention, the object is achieved in a device for overcoming a height difference, the device

• - Has at least a first level and at least a second level, which are spaced apart by the height difference, and wherein the device has at least one lifting device and at least one horizontal platform unit which is movable between the first and the second level, wherein
• in each case at least one movable first stage and at least one movable second stage adjoin the platform unit, are arranged parallel to the platform unit and are movable between the first level and the second level,
• - The platform unit, the first stage and the second stage are movable by means of at least one lifting device.

An advantage of the invention is that the device is space-saving. The result is a combination of a level transition between the platform unit and a first level or a second level and a step transition between the first level and the second level. The device is used as an elevator only when required. A wheelchair user can then move from the platform unit to the first level or the second level, for example, while other people can use the steps at the same time. The device can therefore also be used to enable the height difference to be overcome more quickly on foot. A lifting device is a simple means of moving a platform unit. It is also advantageous that the platform unit forms a constant surface, the first stage and the second stage adjoining the platform unit. The first stage, the second stage and the platform unit are separate components. The size of the platform unit is therefore independent of a number and a size of the stages.

At least one coupling device connects and the first stage and the second stage to one another, the coupling device being movable with at least one lifting device. With the aid of the coupling device, it is possible to move a first stage and a second stage together.

According to an advantageous embodiment of the invention, the platform unit is angular, circular or elliptical, the first step and the second step being arranged at an angle to one another or in two circular sections or in two elliptical sections, depending on the design of the platform unit. The terms "angular" and "angular" can refer to a triangular, a rectangular or a polygonal shape of the platform unit, for example. This results in a variable design of the device. A route can have any direction.

In particular, the first stage and the second stage are arranged opposite one another. As a result, the device can also be arranged, for example, at an intersection or in an entry area of a rail vehicle.

In particular, there are at least two first steps that form at least one outer step and at least one inner step, and that there are at least two second steps that form at least one outer step and at least one inner step, the outer steps and the inner steps each are movable together. This enables simple mechanical coupling of the stages to one another. The terms "inner" and "outer" refer to the proximity to the platform unit in the use or installation position when the device is used as intended, e.g. in a building or a rail vehicle. An inner step is closer to the platform unit than an outer step.

Specifically, the coupling device is an angular unit that carries a first step and a second step with at least two support arms and is attached to the lifting device with at least one holding arm. The angular unit is an example of a means by which the steps can be coupled to one another and to the lifting device.

Specifically, a lower angle unit on a second stage has a support arm that is longer than a support arm on a second stage of an upper angle unit. This ensures a simple mechanical design which carries the steps and with which the steps can be moved up and down.

• - weist die Hubvorrichtung mindestens eine Scherenhubvorrichtung auf, und die Winkeleinheit ist mit dem Haltearm an mindestens einem Gelenk der Scherenhubvorrichtung angebracht. Eine Scherenhubvorrichtung ist einfach aufgebaut und sehr tragfähig, so dass auch größere Lasten bewegt werden können.

According to an advantageous embodiment of the invention

• - The lifting device has at least one scissor lifting device, and the angle unit is attached to at least one joint of the scissor lifting device with the holding arm. A scissor lifting device is simple and very stable, so that even larger loads can be moved.

• - die erste Stufe und die zweite Stufe mittels einer unteren Winkeleinheit an mindestens einem unteren Gelenk der Scherenhubvorrichtung befestigt und
• - die erste Stufe und die zweite Stufe sind mittels einer oberen Winkeleinheit an mindestens einem oberen Gelenk der Scherenhubvorrichtung befestigt.

Are preferred

• - The first stage and the second stage fastened to at least one lower joint of the scissor lifting device by means of a lower angle unit and
• - The first stage and the second stage are attached to at least one upper joint of the scissor lifting device by means of an upper angle unit.

This enables a simple mechanical coupling between the first stage, the second stage and the scissor lifting device.

• - weist die Hubvorrichtung mindestens eine Hebeleinrichtung auf, und
• - die Winkeleinheit ist mit dem Haltearm an mindestens einem zur Hebeleinrichtung gehörigen Führungselement mit mindestens einem horizontalen Langloch befestigt, wobei
• - die Hebeleinrichtung das Langloch beweglich durchgreift.

Die Hebeleinrichtung ist einfach aufgebaut und kann die Stufen gemeinsam aufwärts bzw. abwärts bewegen.According to a further embodiment of the invention

• - The lifting device has at least one lever device, and
• - The angle unit is fastened with the holding arm to at least one guide element belonging to the lever device with at least one horizontal elongated hole, wherein
• - The lever device moves through the elongated hole.

The lever device is simple and can move the steps up and down together.

• - die erste Stufe und die zweite Stufe mittels einer unteren Winkeleinheit (W10) an mindestens einem ersten Führungselement der Hebeleinrichtung befestigt,
• - die erste Stufe und die zweite Stufe mittels einer oberen Winkeleinheit an mindestens einem zweiten Führungselement der Hebeleinrichtung befestigt und
• - die Plattformeinheit an mindestens einem dritten Führungselement befestigt.

Dadurch ergibt sich eine einfache mechanische Kopplung der ersten Stufe, der zweiten Stufe und der Plattformeinheit mit der Hebeleinrichtung.Are special

• - the first stage and the second stage by means of a lower angle unit ( W10 ) attached to at least a first guide element of the lever device,
• - The first stage and the second stage are attached to at least one second guide element of the lever device by means of an upper angle unit and
• - The platform unit attached to at least a third guide element.

This results in a simple mechanical coupling of the first stage, the second stage and the platform unit with the lever device.

• - weist die Hubvorrichtung mindestens zwei Spindelantriebe auf, wobei
• - mindestens eine Stufe und die Plattformeinheit jeweils Gewinde für die Spindelantriebe aufweisen,

oder

• - die Hubvorrichtung weist mindestens zwei Linearmotoren auf, wobei
• - mindestens eine Stufe und die Plattformeinheit jeweils an mindestens einem Haltelement der Linearmotoren befestigt sind.

According to a further embodiment of the invention

• - the lifting device has at least two spindle drives, wherein
• at least one step and the platform unit each have threads for the spindle drives,

or

• - The lifting device has at least two linear motors, wherein
• - At least one step and the platform unit are each attached to at least one holding element of the linear motors.

The spindle drive and the linear motor are also simple forms of drive with which the steps can be moved. The fact that each first stage has at least one spindle drive or at least one linear motor ensures that the stages have a high load-bearing capacity.

• - die Hubvorrichtung mindestens eine pneumatische Einrichtung und/oder mindestens eine hydraulische Einrichtung aufweisen,

wobei

• - mindestens eine Stufe und die Plattformeinheit von mindestens einer pneumatischen Einrichtung und/oder mindestens einer hydraulischen Einrichtung getragen werden

oder

• - die Plattformeinheit von der pneumatischen Einrichtung und/oder der hydraulischen Einrichtung getragen wird, wobei die Plattformeinheit mindestens ein Mitnehmerelement aufweist, auf dem die Stufe aufliegt, und insbesondere eine innere Stufe mindestens ein Mitnehmerelement aufweist, auf dem eine äußere Stufe aufliegt.

Die pneumatische Einrichtung und/oder die hydraulische Einrichtung weisen ebenfalls eine hohe Tragfähigkeit auf und können alternativ oder zusätzlich zu anderen Hubvorrichtungen verwendet werden.According to a further embodiment of the invention

• the lifting device has at least one pneumatic device and / or at least one hydraulic device,

in which

• - At least one step and the platform unit are carried by at least one pneumatic device and / or at least one hydraulic device

or

• - The platform unit is carried by the pneumatic device and / or the hydraulic device, wherein the platform unit has at least one driver element on which the step rests, and in particular an inner step has at least one driver element on which an outer step rests.

The pneumatic device and / or the hydraulic device also have a high load-bearing capacity and can be used as an alternative or in addition to other lifting devices.

In particular, the first stages can be arranged in the first level, and the angle unit and / or the lifting device can be accommodated at least partially below the first level. This enables the platform unit to be fully lowered to the first level.

Rail vehicle with at least one device in an entrance area, in particular for passengers. The device is particularly suitable for people with reduced mobility. Due to the small space requirement, the device can be used especially for rail vehicles with several levels (e.g. double-decker vehicles). E.g. wheelchair users can get access to an upper floor. This is particularly important if there is a passage for an entire train on the upper floor. The device can also be used to transport loads, so that additional lifts for trolleys or similar can be used. can be dispensed with.

• 1a bis 1c perspektivische Ansichten einer erfindungsgemäßen Vorrichtung gemäß einem ersten Ausführungsbeispiel,
• 1d eine schematische Draufsicht auf einen Fußbodenbereich eines Schienenfahrzeugs mit der erfindungsgemäßen Vorrichtung,
• 2a bis 2c perspektivische Vorderansichten einer erfindungsgemäßen Vorrichtung gemäß einem dritten Ausführungsbeispiel,
• 2d bis f perspektivische Unteransichten einer erfindungsgemäßen Vorrichtung gemäß dem dritten Ausführungsbeispiel,
• 3a bis 3c perspektivische Ansichten einer erfindungsgemäßen Vorrichtung gemäß einem dritten Ausführungsbeispiel,
• 4a bis 4c perspektivische Ansichten einer erfindungsgemäßen Vorrichtung gemäß einem vierten Ausführungsbeispiel,
• 5 eine schematische Ansicht einer erfindungsgemäßen Vorrichtung gemäß einem fünften Ausführungsbeispiel und
• 6a bis 6d schematische Ansichten einer erfindungsgemäßen Vorrichtung gemäß einem sechsten Ausführungsbeispiel.

Six exemplary embodiments of the invention are explained in more detail below with reference to twenty-one figures, the same or similar elements in the figures having the same reference symbols. Show it:

• 1a to 1c perspective views of a device according to the invention according to a first embodiment,
• 1d 1 shows a schematic plan view of a floor area of a rail vehicle with the device according to the invention,
• 2a to 2c perspective front views of a device according to the invention according to a third embodiment,
• 2d to f perspective bottom views of a device according to the invention according to the third embodiment,
• 3a to 3c perspective views of a device according to the invention according to a third embodiment,
• 4a to 4c perspective views of a device according to the invention according to a fourth embodiment,
• 5 is a schematic view of a device according to the invention according to a fifth embodiment and
• 6a to 6d schematic views of an inventive device according to a sixth embodiment.

In the 1a to 4c is only part of the device for the sake of simplicity 10th , 20th , 30th , 40 provided with reference numerals. However, it goes without saying that the device has a symmetrical structure 10th , 20th , 30th , 40 the same elements are also present on an opposite side of the device. In the 2a to 3c there is only one lifting device available once.

The 1a to 4c show four different embodiments of a device according to the invention 10th , 20th , 30th , 40 . The device 10th , 20th , 30th , 40 each has a first level E1 and a second level E2 on. Between the first level E1 and the second level E2 is a height difference H available. In addition, the device 10th , 20th , 30th , 40 one platform unit each 11 with a first edge K1 and a second edge K2 on. The first edge K1 is perpendicular to the second edge K2 arranged. A longitudinal direction x, a transverse direction y and a vertical direction z serve for orientation, the designation “vertical direction z” applying both to the positive direction + z and to the negative direction -z.

Between the first level E1 and the platform unit 11 are two first stages S11 and S12 arranged. On an opposite side of the platform unit 11 two further first stages can be arranged. The first stages S11 and S12 run parallel to the first edge K1 . Between the level E2 and the platform unit 11 are two second levels S21 and S22 arranged. On an opposite side of the platform unit 11 two further second stages can be arranged. The second stages S21 and S22 run parallel to the second edge K2 . The first stage S11 is mechanical with the second stage S21 coupled. The first stage S12 is mechanical with the second stage S22 coupled.

Between the steps S11 , S12 , S21 , S22 is a rectangular column 12th shown. The pillar 12th fills out a corner between the first levels S11 , S12 and the second stages S21 , S22 as well as between the first level E1 and the second level E2 is formed. If further first and / or second stages are provided, the platform unit can be attached to further corners 11 there are more columns.

The 1a to 1c show the basic structure and general operation of the invention using the device 10th which is a first embodiment of the invention. A lower angle unit W10 and an upper angle unit W20 are examples of a coupling device and each have the same structure and the same function as in the 2a to 2f .

1a shows a state of use in which the first stages S11 , S12 and the platform unit 11 in the first level E1 are located. The second stages S21 , S22 are between the first level E1 and the second level E2 . This state of use makes it possible, for example, for people with reduced mobility from the first level E1 to the platform unit 11 to get. People with no mobility can go from the first levels E1 the second stages S22 , S21 go up or down to the second level E2 .

1b shows a state of use in which the first stages S11 , S12 , the platform unit 11 and the second stages S21 , S22 between the first level E1 and the second level E2 are located. This state of use is a snapshot of movement of the device 10th from the first level E1 to the second level E2 . People who are on the platform unit 11 are located from the first level E1 to the second level E2 emotional. The movement of the device 10th takes place by means of a 1a to 1c Lifting device, not shown.

1c shows a state of use in which the first stages S11 , S12 between the first level E1 and the second level E2 are located. The second stages S21 , S22 and the platform unit 11 are on the second level E2 . This state of use enables, for example, people with reduced mobility from the platform unit 11 to the plane E2 to get. People without reduced mobility can go from the second level E2 the first stages S12 , S11 go up or down to the first level E1 .

The pillar 12th prevents the risk of an accident by limiting the first steps to the side S11 , S12 and the second stages S21 , S22 as well as the first level E1 and the second level E2 .

In 1d a schematic plan view of a floor area of a rail vehicle is shown as an example. The floor area has two devices 10th that are constructed in exactly the same way as in the 1a to 1c . The right half of the picture shows the device 10th in a boarding position, ie the platform unit 11 has shut down to the first level E1 . The left half of the picture shows the device 10th in a transition position, ie the platform unit 11 has gone up to the second level E2 . The first stages S11 , S12 and the second stages S21 , S22 as well as the platform unit 11 are housed inside the rail vehicle.

The 2a to 2c , 2d to 2f , 3a to 3c and 4a to 4c show for the device 20th , 30th , 40 the same conditions of use as that 1a to 1c in the same order.

The 2a to 2f show a device 20th as a second embodiment. Here is the lifting device as a scissor lifting device 21 executed. The scissor lift device 21 has at least one lower joint in the left half of the image and in the transverse direction y 22 and at least one top joint 23 on. The lower angular unit W10 has a support arm W11 and a holding arm W12 on. The support arm W11 is at the second stage S21 attached. The holding arm W12 is on the lower joint 22 attached. The upper angle unit W20 has a support arm W21 and a holding arm W22 on. The support arm W21 is at the second stage S22 attached. The holding arm W22 is on the upper joint 23 attached. The support arms W11 and W21 can be arranged vertically. The holding arms W12 and W22 can be arranged horizontally.

In the 2d to 2f is also another support arm W13 the lower angular unit W10 visible at the first stage S11 is attached. There is also another support arm W23 the upper angular unit W20 visible at the first stage S12 is attached. The lower angular unit W10 causes the first stage to move simultaneously S11 and the second stage S21 . The upper angle unit W20 causes the first stage to move simultaneously S12 and the second stage S22 .

The 3a to 3c show a device 30th as a third embodiment. The device 30th has a carrying device here 38 on which the lever device 31 a lifting device is rotatably attached. The lower angular unit W10 and the top angle unit W20 have the same structure and the same function as in the 2a to 2f . The lever device 31 according to the 3a to 3c reaches into a first slot 35 a first guide element 32 , in a second slot 36 a second guide element 33 and into a third slot 37 a third guide element 34 a, cf. in particular 3b . The first guide element 32 is on the lower angle unit W10 attached. The second guide element 33 is on the upper angle unit 20th attached. The third leadership element 34 is on the platform unit 11 attached. The lever device 31 is moved by means of a motor drive, not shown. In 3a is the lever device 31 shown in a lower end position. In the 3b is the lever device 31 in an intermediate position. In the 3c is the lever device 31 shown in an upper end position.

The 4a to 4c show a device 40 as a fourth embodiment with spindle drives 41 , 42 and 43 . The lower angular unit W10 and the top angle unit W20 have the same structure and the same function as in the 2a to 2f . The spindle drive 41 moves the angular unit W10 and thus the first stage S11 and the second stage S21 . The spindle drive 42 moves the angular unit W20 and thus the first stage S12 and the second stubborn S22 . The spindle drive 43 moves the platform unit 11 .

In the 5 to 6d is only part of the device for the sake of simplicity 50 , 60 shown and provided with reference numerals. Except for the lifting devices in the 2a to 4c point the devices 50 , 60 in the 5 and 6a one to the devices 10th , 20th , 30th , 40 analog structure. The 6b to 6d show an alternative embodiment of the device 60 in 6a . Between the first level E1 and the second level E2 is also a difference in height here H available. A longitudinal direction x, a transverse direction y and a vertical direction z again serve for orientation, the designation “vertical direction z” being valid both for the positive direction + z and for the negative direction -z

In 5 is a device 50 shown as a fifth embodiment. The first stages S11 and S12 and the platform unit, not shown here 11 each have two guides 51 for linear motors, not shown here, behind a panel 54 arranged and with brushes 52 are sealed. Every first stage S11 and S12 has two holding elements 53 that are attached to the linear motors.

In the 6a to 6d is a device 60 as a sixth embodiment with at least one hydraulic device 62 shown. Alternatively, at least one pneumatic device can be used 61 to be available. In 6a become the first stages S11 and S12 each with its own hydraulic device 62 or your own pneumatic device 61 emotional.

The in the 5 to 6d Not illustrated second stages S21 and S22 are about the lower angle unit, also not shown W10 and the upper angle unit, also not shown W20 moved along. The lower angular unit W10 and the top angle unit W20 have the same structure and the same function as in the 2a to 2f .

Alternatively, in the 6b to 6d instead of the lower angle unit W10 and the upper angle unit W20 a mechanism with a driver element 63 for the first stage S12 and a driver element 64 for the first stage S11 to be available. The driver element 63 is on the platform unit 11 attached, and the first stage S12 lies on it. The driver element 64 is at the first stage S12 attached, and the first stage S11 lies on it. If the platform unit 11 is moved upwards, the driver element takes 63 the first stage S12 with up. The driver element 64 takes the first stage S11 with up. If the platform unit 11 is moved down, the first stages move S11 , S12 also down to the driver elements 63 , 64 rest on a support surface, not shown. The first stages S11 , S12 are then at the same level as the level E1 . The second stages, not shown here S21 and S22 also have driver elements.

In the 1a to 6d are the first stages S11 and S12 can be moved individually or together. Even those in the 4a to 6a not shown second stages S21 and S22 can be moved individually or together.

In the 1a to 6d can the first stage S12 also referred to as an inner stage, and the first stage S11 can also be called an outer stage. In the 1a to 4c can also take the second stage S22 be called an inner stage, and the second stage S21 can also be called an outer stage. The terms “inner” and “outer” refer to the proximity to the platform unit in the use or installation position when the device is used as intended, for example in a building or a rail vehicle. An inner step is closer to the platform unit than an outer step.

Reference list

10th

contraption

11

Platform unit

12th

pillar

20th

contraption

21

Scissor lifting device

22

Lower joint

23

Upper joint

30th

contraption

31

Lever device

32

First leadership element

33

Second guide element

34

Third leadership element

35

First slot

36

Second slot

37

Third slot

38

Carrying device

40

contraption

41

Spindle drive

42

Spindle drive

43

Spindle drive

50

contraption

51

guide

52

to brush

53

Holding element

54

Cladding

60

contraption

61

Pneumatic device

62

Hydraulic device

63

Driver element

64

Driver element

E1

First floor

E2

second level

H

Height difference

S11

First stage

S12

First stage

S21

Second step

S22

Second step

K1

First edge

K2

Second edge

W10

Lower angle unit

W11

Support arm

W12

Holding arm

W13

Support arm

W20

Upper angle unit

W21

Support arm

W22

Holding arm

W23

Support arm

x

Longitudinal direction

y

Cross direction

e.g.

Vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102017201445 A1 [0003]
• KR 101090782 B1 [0004]
• CA 2530552 A1 [0005]

Claims (15)

Device (10, 20, 30, 40, 50, 60) for overcoming a height difference, the device (10, 20, 30, 40, 50, 60) - has at least one first level (E1) and at least one second level (E2), which are spaced apart by the height difference (H), and wherein the device (10, 20, 30, 40, 50, 60), - at least one lifting device and - At least one horizontal platform unit (11) which is movable between the first level (E1) and the second level (E2), wherein - Adjacent at least one movable first stage (S11, S12) and at least one movable second stage (S21, S22) to the platform unit (11), arranged parallel to the platform unit (11) and between the first level (E1) and the second Plane (E2) are movable, - The platform unit (11), the first stage (S11, S12) and the second stage (S21, S22) are movable by means of at least one lifting device. Device (10, 20, 30, 40, 50, 60) after Claim 1 , characterized in that - at least one coupling device connects the first stage (S11, S12) and the second stage (S21, S22) to one another and that the coupling device can be moved with at least one lifting device. Device (10, 20, 30, 40, 50, 60) after Claim 1 or 2nd , characterized in that the platform unit (11) is angular, circular or elliptical, the first step (S11, S12) and the second step (S21, S22) depending on the design of the platform unit (11) at an angle to one another or in two Circular sections or are arranged in two elliptical sections. Device (10, 20, 30, 40, 50, 60) according to one of the preceding claims, characterized in that the first stage (S11, S12) and the second stage (S21, S22) are arranged opposite one another. Device (10, 20, 30, 40, 50, 60) according to one of the preceding claims, characterized in that at least two first stages (S11, S12) are present, the at least one outer stage (S11) and at least one inner stage ( S12), and that there are at least two second stages (S21, S22) which form at least one outer stage (S21) and at least one inner stage (S22), the outer stages (S11, S21) and the inner stages ( S12, S22) are each movable together. Device (10, 20, 30, 40, 50, 60) according to one of the Claims 2 to 5 , characterized in that the coupling device is an angular unit (W10, W20) with at least two support arms (W11, W13, W21, W23), each having a first stage (S11, S12) and a second stage (S21, S22) carries and is attached to the lifting device with at least one holding arm (W12, W22). Device (10, 20, 30, 40, 50, 60) after Claim 6 , characterized in that a lower angle unit (W10) on a second step (S21) has a support arm (W11) which is longer than a support arm (W21) on a second step (S22) of an upper angle unit (W20). Device (20) after Claim 6 or 7 , characterized in that - the lifting device has at least one scissor lifting device (21) and - the angle unit (W10, W20) with the holding arm (W12, W22) is attached to at least one joint (22, 23) of the scissor lifting device (21). Device (20) after Claim 8 , characterized in that - the first stage (S11) and the second stage (S21) are fastened by means of a lower angle unit (W10) to at least one lower joint (22) of the scissor lifting device (21) and - the first stage (S12) and the second stage (S22) is attached to at least one upper joint (23) of the scissor lifting device (21) by means of an upper angle unit (W20). Device (30) after Claim 6 or 7 , characterized in that - the lifting device has at least one lever device (31) and - the angle unit (W10, W20) with the holding arm (W12, W22) on at least one guide element (32, 33, 34) belonging to the lever device (31) at least one horizontal elongated hole (35, 36, 37) is fastened, - the lever device (31) movably engaging through the elongated hole (35, 36, 37). Device (30) after Claim 10 , characterized in that - the first step (S11) and the second step (S21) are fastened to at least one first guide element (32) of the lever device (31) by means of a lower angle unit (W10), - the first step (S12) and the second stage (S22) is fastened to at least one second guide element (33) of the lever device (31) by means of an upper angle unit (W20) and - the platform unit (11) is fastened to at least one third guide element (34). Device (40, 50) according to one of the Claims 1 to 7 , characterized in that - the lifting device has at least two spindle drives (41, 42, 43), wherein - at least one step (S11, S12, S21, S22) and the platform unit (11) each have threads for the spindle drives (41, 42, 43), or that - The lifting device has at least two linear motors, wherein - at least one stage (S11, S12, S21, S22) and the platform unit (11) are each fastened to at least one holding element (53) of the linear motors. Device (60) according to one of the Claims 1 to 7 , characterized in that - the lifting device has at least one pneumatic device (61) and / or at least one hydraulic device (62), with - at least one step (S11, S12, S21, S22) and the platform unit (11) of at least one pneumatic device (61) and / or at least one hydraulic device (62) are carried or - the platform unit (11) is carried by the pneumatic device (61) and / or the hydraulic device (62), the platform unit (11) at least has a driver element (63) on which the step (S12, S22) rests, and in particular an inner step (S12, S22) has at least one driver element (64) on which an outer step (S11, S21) rests. Device (10, 20, 30, 40, 50, 60) according to one of the preceding claims, characterized in that the first stages (S11, S12) are arranged in the first plane (E1) and the angle unit (W10, W20) and / or the lifting device is at least partially accommodated below the first level (E1). Rail vehicle with at least one device (10, 20, 30, 40, 50, 60) according to one of the Claims 1 to 14 in an entrance area, especially for passengers.

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