RAILWAY VEHICLE WITH A MOVABLE, VERTICAL GAP BRIDGING ENTRY THRESHOLD

Abstract

A railway vehicle for passenger transport comprising a vehicle body, said vehicle body including a passenger entrance area and a vehicle boarding aid for facilitating passengers' access to the passenger entrance area, the vehicle boarding aid comprising a movable entry threshold arranged in an access position facilitating passengers' access to the passenger entrance area and a vertical position adjusting device for vertically adjusting the access position of the entry threshold as a function of a potential vertical gap between a station platform and the passenger entrance area, wherein said entry threshold is fixedly arranged in said access position in all operating states of the railway vehicle.

Claims

1. A railway vehicle for passenger transport comprising a vehicle body, said vehicle body comprising: a passenger entrance area; and a vehicle boarding aid for facilitating passengers' access to the passenger entrance area, wherein the vehicle boarding aid comprises: a movable entry threshold arranged in an access position facilitating passengers' access to the passenger entrance area; and a vertical position adjusting device for vertically adjusting the access position of the entry threshold as a function of a potential vertical gap between a station platform and the passenger entrance area, wherein said entry threshold is fixedly arranged in said access position in all operating states of the railway vehicle.

2. The railway vehicle of claim 1, wherein the entry threshold is adapted to remain within the railway vehicle's loading gauge in all operating states of the railway vehicle.

3. The railway vehicle of claim 1, said entry threshold comprising an outer access end for stepping into the passenger entrance area, and an inner pivot end about which it can pivot around a horizontal axis to vertically adjust the access position of the entry threshold.

4. The railway vehicle of claim 3, wherein said passenger entrance area comprises an entrance floor and said inner pivot end is attached to the vehicle body in the area of the entrance floor.

5. The railway vehicle of claim 3, wherein the vertical position adjusting device is adapted to act on the entry threshold's outer access end.

6. The railway vehicle of claim 3, wherein an angular amplitude of the entry threshold's pivoting movement is less than 16°.

7. The railway vehicle of claim 1, wherein the vertical position adjusting device is arranged below the entry threshold.

8. The railway vehicle of claim 1, wherein the vertical position adjusting device comprises an actuator, such as an electric jack, a hydraulic cylinder or a pneumatic cylinder.

9. The railway vehicle of claim 8, wherein the actuator is attached to an outer side wall of the vehicle body.

10. The railway vehicle of claim 8, wherein the actuator is attached to the underside of the vehicle body.

11. The railway vehicle of claim 8, wherein the vertical position adjusting device comprises a linkage connecting the actuator to the entry threshold, said linkage being adapted to convert a movement of the actuator into a vertical displacement of the entry threshold.

12. The railway vehicle of claim 1, the railway vehicle being a tram, and in particular a low floor tram.

13. The railway vehicle of claim 1, further comprising: a vehicle body suspension supporting the vehicle body, said vehicle body suspension being adapted to expand or collapse vertically as a function of the vehicle body's passenger load; a sensor arrangement adapted to provide a measure for the vehicle body's passenger load; and a controller adapted to control the vertical position adjusting device as a function of the measure provided by the sensor arrangement.

14. A method of vertically adjusting the access position of the entry threshold of the railway vehicle of claim 13, comprising the steps of: keeping the access position of the entry threshold at a default height when the railway vehicle is travelling from a first railway station having a first station platform to a second railway station having a second station platform; using said sensor arrangement, measuring the vehicle body's passenger load and thus the size of the vehicle body suspension's current collapse; when the railway vehicle has stopped at the second railway station, controlling the vertical position adjusting device to vertically adjust the access position of the entry threshold as a function of the measured passenger load, thus compensating a potential vertical gap between the passenger entrance area and the second station platform; and when the railway vehicle leaves the second railway station, controlling the vertical position adjusting device to move the entry threshold back to the access position's default height.

15. The railway vehicle of claim 8, wherein the actuator is attached to an outer side wall of the vehicle body via a ball joint.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Examples of the invention will now be described in detail with reference to the appended drawings, wherein:

[0032] FIG. 1 is a longitudinal section, seen from the top, of a tramway according to the invention;

[0033] FIG. 2 shows an example of an inventive vehicle boarding aid, in a configuration with no passenger load;

[0034] FIG. 3 shows the vehicle boarding aid of FIG. 2 in a configuration with high passenger load;

[0035] FIGS. 4 and 5 show another example of an inventive vehicle boarding aid;

[0036] FIG. 6 shows a further example of an inventive vehicle boarding aid; and

[0037] FIG. 7 illustrates the angular amplitude of the pivoting movement of an inventive entry threshold.

DETAILED DESCRIPTION

[0038] With reference to FIG. 1, there is shown a tramway 1 according to the invention. Preferably, tramway 1 is a low floor tram such as the Citadis trams manufactured by the applicant. Tramway (Tram set) 1 can for example have a total of five passenger compartments, namely three seating compartments 3 and two open space compartments 5. The open space compartments 5 are designed to accommodate wheelchairs or pushchairs and/or are adapted to disabled people. Each compartment 3, 5 has a body 6 with one or more passenger entrance areas 7 that are opened and closed with doors 9. Each passenger entrance area 7 has an entrance floor 10.

[0039] The inventive vehicle boarding aid facilitates access to the tramway 1, in particular for wheelchair users and other disabled people, or for parents with pushchairs. The inventive vehicle boarding aid can either be installed at each of the doors 9 of the tram 1, as indicated by arrows A, or only at the doors 9 of the open space compartments 5, as indicated by arrows B.

[0040] An example 100 of the inventive vehicle boarding aid is shown in FIGS. 2 and 3. In FIGS. 2 and 3, tram 1 stops at the platform 11 of a tram station. Platform 11 is located at a height Hp above rail level 13. The upper end of body 6 of compartments 3, 5 is located at a height Hb above rail level 13. Body 6 is supported by a suspension 12.

[0041] Vehicle boarding aid 100 is designed such that it always remains within the tram's loading gauge Lg (indicated by a chain-dotted line), regardless of the vehicle boarding aid's operating state.

[0042] Vehicle boarding aid 100 comprises a pivotable entry threshold 102 and a vertical position adjusting device 104. Entry threshold 102 has an outer access end 106 for stepping into the passenger entrance area 7, and an inner pivot end 108 about which it can pivot around a horizontal axis X. The entry threshold's inner pivot end 108 is attached to the body 6 in the area of the entrance floor 10 via a pivot joint 110. Preferably, the outer access end 106 is bent downwards.

[0043] Entry threshold 102 is fixedly arranged on the body 6 in an access position Ap. The access position Ap is a position in which a passenger can step from platform 11 onto entry threshold 102 to enter the passenger entrance area 7. In other words, entry threshold 102 always remains in the access position Ap, in all operating states of tram 1. Hence, entry threshold 102 always guarantees access to tram 1.

[0044] Vertical position adjusting device 104 is designed to vertically adjust the access position Ap of the entry threshold 102 as a function of a potential vertical gap Gv between the station platform 11 and the entrance floor 10. Vertical position adjusting device 104 is positioned below entry threshold 102. A supporting end 112 of vertical position adjusting device 104 is attached to an outer side wall 15 of body 6, preferably via a ball joint 114. An adjusting end 116 of vertical position adjusting device 104 is attached to entry threshold 102. Preferably, the adjusting end 116 acts on the outer access end 106.

[0045] Vertical position adjusting device 104 can linearly expand and contract in order to modify the distance D between the entry threshold 102 and its supporting end 112.

[0046] In order to modify the distance D, vertical position adjusting device 104 comprises an actuator 118, such as an electric jack, a hydraulic cylinder or a pneumatic cylinder.

[0047] The actuator 118 is controlled via a controller 120. Preferably, controller 120 corresponds to the Train Control Management System (TCMS) of tram 1. Controller 120 receives an input from a sensor arrangement 122 that provides a measure for the passenger load of body 6. Preferably, sensor arrangement 122 includes a load sensor or a passenger counting sensor. Sensor arrangement 122 may also comprise an optical sensor, e.g. a laser sensor, preferably mounted on the outside of tram body 6, adapted to measure the vertical distance between the station platform 11 and the entrance floor 10.

[0048] FIG. 2 illustrates the configuration of the inventive vehicle boarding aid 100 when no passengers are present in tram body 6. The suspension 12 is in an expanded state and there is a substantial vertical gap Gv between the entrance floor 10 and the platform 11. Thanks to the load sensor 122, controller 120 is aware that there is no passenger load. Controller 120 has therefore retracted actuator 118 so that the access position Ap of entry threshold 102 is tilted downwardly. Consequently, entry threshold 102 bridges vertical gap Gv, thus facilitating access to tram body 6.

[0049] FIG. 3 illustrates the configuration of the inventive vehicle boarding aid 100 when a large number of passengers are present in tram body 6. The suspension 12 is in a collapsed state and there is only a small vertical gap Gv between the entrance floor 10 and the platform 11. Thanks to the load sensor 122, controller 120 is aware that there is a high passenger load. Controller 120 has therefore extended actuator 118, thus pivoting entry threshold 102 upwardly around horizontal axis X (as indicated by arrow R). Accordingly, the access position Ap of entry threshold 102 is substantially horizontal. Entry threshold 102 bridges the small vertical gap Gv, thus facilitating access to tram body 6.

[0050] FIG. 4 is a cross-sectional view of another example 200 of the vehicle boarding aid according to the invention. FIG. 5 is a longitudinal external side view of the other example 200 according to arrow V in FIG. 4.

[0051] Vehicle boarding aid 200 is different from vehicle boarding aid 100 in that the adjusting end 216 of vertical position adjusting device 204 is connected to entry threshold 202 via a joint 215, in particular a ball joint. Thanks to the joint 215, the vertical position adjusting device 204 of this example 200 has an inclined orientation and thus takes up less space in the vertical direction compared to the vertical position adjusting device 104 of the previous example 100 with its generally vertical orientation. In particular, vertical position adjusting device 204 is arranged such that the space E corresponding to the gap between car body 6 and station platform 11 (cf. FIG. 4) is not obstructed. With reference to FIG. 5, entry threshold 202 can rotate around a horizontal axis X located at the inner pivot end 208.

[0052] FIG. 6 shows a further example 300 of the vehicle boarding aid according to the invention. In this example, the actuator 318 of the vertical position adjusting device 304 is mounted to the underside 16 of the tram body 6. The actuator 318 can also be set up inside the carbody shell and pass through the car body structure.

[0053] The vertical position adjusting device 304 also comprises a linkage 319 connecting the actuator 318 to the entry threshold 302, said linkage 319 being adapted to convert a linear movement of the actuator 318 into a rotation of the entry threshold 302 around the horizontal pivoting axis X. Linkage 319 comprises an angled link 321 whose lower link end 323 is attached to the actuator 318, and whose upper link end 325 is attached to the tram body 6. The angle 327 of angled link 321 is linked to the lower rod end 329 of a rod 331. The upper rod end 333 of rod 331 is linked to the outer access end 306 of entry threshold 302.

[0054] FIG. 7 illustrates the angular amplitude a of the entry threshold's pivoting movement. According to the invention, the access position Ap of entry threshold 102 can be adjusted between a substantially horizontal default position Pd and a maximum inclined position Pm. The access position Ap is set by the controller 120 to the default position Pd when the tram 1 is travelling between tram stations. When tram 1 enters a tram station and slows down, controller 120 already adjusts the vertical position of the entry threshold 102, 202, 302 to the upcoming station platform 11 so that the entry threshold already has the right inclination for bridging the vertical gap Gv between station platform 11 and the passenger area 7 when tram 1 comes to a complete stop. Furthermore, the entry threshold is brought back into the default position Pd once the tram 1 has started leaving the tram station. Hence, the adjustment of the inventive entry threshold does not increase the length of time that tram 1 has to stay in the tram station.

[0055] The access position Ap may be set to the maximum inclined position Pm when the vertical gap between the platform 11 and the entrance floor 10 is at a maximum. Preferably, the angle α is less than or equal to 16°. This corresponds e.g. to a maximum height adjustment Δh of around 45 mm.