AT519949A1 - Gap bridging for a rail vehicle - Google Patents

Abstract

Gap bridging (1) for a rail vehicle for bridging the gap (4) between a passenger compartment floor and a platform (3), comprising a tread plate (6) mounted so as to be horizontally slidable by means of a power drive (21) between a retracted position and an extended position and any number of intermediate positions ) and one with the tread plate (6) by means of a hinge (10) pivotally connected pivot arm (5), wherein the pivot arm (5) at its the hinge (10) facing away from the end with a vertically displaceable pivot joint (7) is equipped, and the displacement of the vertically displaceable pivot joint (7) by the action of the power drive (21) takes place.

Description

description

Gap bridging for a rail vehicle

Technical field

The invention relates to a gap bridging for a

Rail vehicle to bridge the gap between one

Passenger compartment floor and a platform.

State of the art

Gap bridges are used in modern rail vehicles to enable passengers to get in and out comfortably and in particular to minimize the risk posed by the gap between the floor of the passenger compartment and the platform. In typical subway lines, this gap has a width of approx. 100 mm, but can also be up to 300 mm, for example, on platforms on a curved track. This variance of the gap dimensions represents a special one

This is a source of danger, since the passengers would have to watch out for the current platform gap each time they get on or off, which is often not possible when there is a high volume of passengers. To bridge this platform gap

Gap bridges are used, which usually comprise a slidably mounted plate, which can be pushed out of the vehicle with the aid of power. For larger gap widths, this plate and its storage are to be made very solid, so that the installation space requirement increases and such gap bridges can only be provided in a very complicated manner and with impairment of the car body in the door area. This problem can be partially solved with so-called folding / sliding steps, since in such a case a pivoted lever supports the plate from below and thus significantly reduces the forces on the mounting of the plate. Such folding / sliding steps therefore require less installation space and can be made in the boarding area of a passenger rail vehicle without changes to the

Car body structure can be used, being at the

Installation position of this gap bridging is simply removed and replaced by the conventional floor structure

Gap bridging is replaced. The kinematics of this

However, gap bridging in the form of a folding / sliding step means that when the plate is extended, it lowers on its edge on the platform side, thus creating a step to the platform. In addition, a wide extended plate has a steep slope towards the inside of the car. These properties make gap bridging in the form of a folding / sliding step unsuitable for larger platform gaps.

Presentation of the invention

The invention is therefore based on the object

Specify gap bridges in the form of a folding / sliding step, which is suitable for larger platform gaps and in which in particular the height difference between a platform and the edge of the platform

Footplate is minimized with large extension distances.

The task is accomplished by bridging the gap with the

Features of claim 1 solved. advantageous

Refinements are the subject of subordinate claims.

According to the basic idea of the invention

Gap bridging for a rail vehicle for bridging the gap between a passenger compartment floor and one

Platform described, which one by means of a

Power drive between a retracted position and an extended position and any number of intermediate positions horizontally slidably mounted tread plate and a pivot arm pivotally connected to the tread plate by means of a joint, the pivot arm being equipped at its end facing away from the joint with a vertically displaceable pivot joint, and wherein Displacement of the vertically displaceable swivel joint takes place through the action of the power drive.

This provides the advantage of bridging the gap in

To be able to build a form of a folding / sliding step, which is suitable for large extension distances, since the lowering of the platform-side edge, as with conventional

Gap bridging is avoided. In particular, it is advantageous that a gap bridging can be easily adapted depending on the given conditions of use and the platform heights available.

According to the invention, a gap bridging is constructed which, compared to gap bridges in the manner of the folding / sliding step, has the property that the swivel joint, on which the swivel lever is rotatably mounted on the car body, is shifted upwards as a function of the extension width of the tread plate. This prevents the edge of the platform on the platform side from sinking with large extension distances.

It is essential that the vertical movement of the

Swivel joint by the power drive provided for the extension of the tread plate, so that no further

Drive is required.

According to one embodiment of the invention, the

Power drive via a traction device (for example a rope or a chain) on the vertically displaceable swivel joint. For example, a gearbox with a cable drum can be provided on the drive. A mechanically less complex embodiment uses the extended movement of the tread plate deflected by means of a lever as a drive for a traction means. In this way, complex and error-prone rope winding can be avoided.

According to a further preferred embodiment of the

Invention is a conventional folding / sliding step with another kinematic element, a rotary lever extended.

The rotary lever is pivotable at one of its ends about a horizontal axis with the body of the

Rail vehicle connected and pivoted at its further end with a point on the swivel arm of the

Gap bridging connected. The swivel joint, which with conventional folding / sliding steps the rotation of the

Swivel arm around a horizontal axis is possible with a gap bridging according to the invention around a vertical

Movability expanded. Such is the kinematic

Movement sequence changed so that the point at the

Swivel arm, on which the rotary lever attaches, executes a circular movement, at the same time the vertically displaceable swivel joint being displaced upwards (in the direction of the tread plate). Through this vertical

Movement of the swivel joint results in a change in the height of the platform-side edge of the tread plate, as a result of which this edge can be prevented from sinking even with large extension distances.

The determination of the required dimensions of the assemblies of the gap bridging and the required sliding path of the

Swivel are dependent on the

Determine infrastructure conditions according to the methods used for flat gearboxes.

It is a particular advantage of an inventive one

Gap bridging that the entire movement sequence when retracting or extending a tread plate and the associated swiveling movement of the swivel arm only takes place by means of a power drive, the swivel arm or the vertically displaceable swivel joint itself not requiring any drive, since it is caused by the extension and retraction movement the footplate is brought into the required position.

However, it is the vertical movement of the

Swivel joint when in the extended position

Block tread plate, i.e. in its vertical

Restrict freedom of movement, otherwise the footplate would fall if the footplate were loaded vertically.

It is advantageous to provide a positive locking.

According to the invention, two preferred embodiments are alternatively provided for blocking. According to a first

Embodiment is a blocking provided by means of a force-actuated bolt, the

Movement is controlled by a control device in coordination with the movement sequence of all components of a vehicle entrance (door drive, door leaf and gap bridging).

Electromagnetic actuation of the bolt is advantageous since such advantages are simple

Controllability and the small space required. However, pneumatic can also be used in certain vehicle types

Actuation of the bolt may be advantageous, especially in

Applications in which a pneumatic door and

Gap bridging actuation is provided.

A second embodiment of the blocking provides for this to be carried out with the force applied by the power drive. For this purpose, a further movement of the drive is required, via which the

Tread plate a blocking vertically movable

Swivel joint causes, as well as at the beginning of the retraction of the tread plate first causes this blocking. According to a preferred embodiment of the invention, the power drive is provided by means of a push and

To let pull rod act on the tread plate, but no firm connection between the tread plate and the

Push and pull rod is made, but a resilient

Element is interposed. In this way, after the treadle, which lies against the platform, has been completely extended, the push and pull rod can be moved a certain distance, this movement being transmitted to the blocking device of the displaceable swivel joint and carrying out the blocking.

The blocking is also removed by this further section of the path, since the push and pull rod must first cover this before the movement of the tread plate begins and this movement causes the blocking to be released. The transmission of the blocking or releasing force is advantageously carried out via a locking lever which is articulated to the pivot lever. At one end of the locking lever is connected to the push and pull rod and at its other end with the

Blocking device of the swivel joint.

In a further development of the invention, it is advisable to equip the gap bridging with a device for preventing the entry of dirt (wipers). There is a cover plate above the tread plate in the area of

To provide passenger compartment floor, this cover plate is provided on its platform edge with a scraper. This cover plate has essentially the same height level as the vehicle floor surrounding it, so that no level differences due to the gap bridging, in particular no steps, are required inside the car. On the edge of the platform

Cover plate is to be arranged a scraper, which at

Retracting the tread plate closes or significantly reduces the gap between the cover plate and the tread plate on the passenger compartment side, so that foreign bodies do not, or only up to a certain size, in the space below

Cover plate can penetrate.

It is particularly advantageous if the wiper

Tread plate touches and the contact force is at least reinforced by an elastic element.

For example, rubber lips, brushes or metal strips with friction-reducing pads can be used as wipers.

Brief description of the drawings

The following are examples:

Fig. 1 Retracted gap bridging.

Fig. 2 extended gap bridging.

Fig. 3 Gap bridging extended, high platform edge.

Fig. 4 Gap bridging extended, low platform edge. Fig. 5 Bridging the floor plan.

Fig. 6 Gap bridging extended, traction drive.

Fig. 7 Gap bridging plan, traction drive.

Fig. 8 Gap bridging retracted, electrical detent. Fig. 9 Gap bridging half extended, electrical detent.

Fig. 10 Gap bridging fully extended, electrical

Detent.

Fig. 11 Gap bridging retracted, mechanical detent.

Fig. 12 Gap bridging half extended, mechanical

Detent.

Fig. 13 Gap bridging, extended, mechanical detent.

Fig. 14 Gap bridging, mechanical detent, locked.

Implementation of the invention

1 shows an example and schematically one

Gap bridging in the retracted position.

A cross section through a passenger rail vehicle is shown in the area of an exit, a gap bridging 1 being provided. The

Passenger rail vehicle is shown in the form of its body 12, comprising a side member and a floor structure made up of a floor plate 13 and a cover plate 2. Between the vehicle and a platform 3 there is a gap 4 which is to be bridged by the gap bridging device 1. This includes a tread plate 6, which is mounted horizontally slidably at its end on the car body side by means of a sliding bearing 8. The tread plate 6 is supported from below by a swivel arm 5 which is pivotally mounted about a displaceable swivel joint 7. At the end facing away from the displaceable swivel joint 7, the swivel arm 5 is connected to the tread plate 6 via a hinge 10; this hinge 10 is arranged in a stationary manner on the tread plate 6. The swivel arm 5 is subjected to a restoring force which tries to pull it back into its rest position. For this purpose, a retraction device 11 comprising a spring is shown by way of example in FIG. 1. On

The rotary lever 9 extends between a rotary lever joint 20 which is arranged in a fixed position on the swivel arm 5 and an axis of rotation 19 arranged on the car body 12

Mobility of the rotary lever joint 20 is restricted to a segment of a circle, as a result of which a vertical displacement of the displaceable pivot joint 7 is inevitable when the step plate 6 extends and the pivot arm 5 is pivoted. Fig. 1 shows the retracted state of the

Gap bridging 1 as it is used in particular while driving. One acting on the step plate 6

Power drive is not shown to simplify the illustration.

2 shows an example and schematically one

Gap bridging in the extended position. It is the

Gap bridging 1 shown in Figure 1, the

The tread plate 6 is pushed into its furthest extended position and the gap 4 is thus bridged. In this extended position, in addition to the vertical displacement 22 of the displaceable swivel joint 7, the movement of the rotary lever joint 20 along a circular segment path can also be seen. The principle shown in FIGS. 1 and 2 still requires blocking the vertical displaceability of the displaceable swivel joint 20 in order to be able to use the tread plate as intended. Such a blocking is not shown in FIGS. 1 and 2 to simplify the illustration.

3 shows an example of a fully extended one

Gap bridging on a high platform edge. It is one

Gap bridging 1, after that shown in FIGS. 1 and 2

Principle shown, but the platform 3 has a higher level. To ensure that even on higher platforms

To be able to extend tread plate 6 without level difference to platform 3, the length of the rotary lever 9 is shortened compared to the rotary lever 9 from FIGS. 1 and 2. The kinematics of the gap bridging 1 changed in this way lifts the platform-side end of the step plate 6 at the end of it

Extend to the platform 3 level.

FIG. 4 shows an extended example, schematically

Gap bridging on a low platform edge. It is a gap bridging 1, according to the principle shown in FIGS. 1 and 2, but with that of the platform 3 has a lower level. In order to step plate 6 without level difference to even at lower platforms

To be able to extend platform 3, the length of the rotary lever 9 is extended compared to the rotary lever 9 from FIGS. 1 and 2. The kinematics of the gap bridging 1 changed in this way lowers the platform-side end of the step plate 6 at the end of its extension process to the level of the platform 3.

5 shows an example and schematically one

Gap bridging in a floor plan. It is a view from

On top of a gap bridging 1 in its installation situation in a car body 12. In this view, sections of the car body 12 through two door pillars and parts of the outer wall are visible. The tread plate 6 is partially extended

Position, its surface is divided into areas with non-slip surface or covering 18 and sliding surfaces 17, the sliding surfaces 17 occupying a significantly smaller proportion of the total surface. The

Sliding surfaces 17 are advantageously arranged deeper than the surfaces 18 with an anti-slip covering, so that they cannot be entered directly. A scraper 15 is pivotally connected to the cover plate 2 at an edge of the platform.

6 shows an example and schematically one

Gap bridging in the extended position with a

Traction mechanism. It is a gap bridging 1, similar to the gap bridges shown in FIGS. 1 to 4, but with the movement of the displaceable

Swivel joint 14 takes place by means of a traction mechanism in synchronism with the movement of the tread plate 6. The

Gap bridging 1 comprises a power drive 21 acting on the tread plate 6, the driving force of which further acts on a traction means 26, which with the displaceable

Swivel joint 7 is connected. The traction means 26 is guided by means of a deflection device 27, for example a sliding surface or a deflection roller, so that the deflection of the

Traction by 90 degrees, if possible, only minimal friction losses occur. The power drive 21 is equipped with a suitable gear, which drives the traction means 26 at the speed at which the extended

End position of the tread plate 6 simultaneously with the maximum

Displacement of the displaceable swivel joint 7 is effected. The traction means 26 can in this embodiment as

Rope, ribbon or chain. The translation of the

The gearbox determines the relation of the extension path

Step plate 6 for the displacement of the displaceable

Swivel joint 7, so that an adaptation to the specific level of the platform 3 is possible.

7 shows an example and schematically one

Gap bridging in the extended position with a

Traction drive in a floor plan. It is one

Gap bridging 1 with a mechanically driven, displaceable swivel joint 7 is shown in a view from above, a transmission for driving a traction means 26 being shown. The gear is designed as a lever gear with a lever 28 which is pivotally mounted about a pivot point 29 about a vertical axis. The lever mechanism is arranged below the tread plate 6. The lever 28 has two arms, the power drive 21 engaging on one of the arms and the traction means 26 being fastened on the other arm. In the exemplary embodiment shown, the two arms of the lever 28 are of different lengths, as a result of which a suitable transmission ratio for the movement of the displaceable swivel joint 7 is established, and thus the ratio of the extension width of the tread plate to the displacement of the displaceable swivel joint 7 is fixed.

8 shows an example and schematically one

Gap bridging with an electrical catch in the retracted position. It is a gap bridging 1, similar to the embodiment shown in FIGS. 1 to 4, wherein an electrically releasable catch to prevent the

The tread plate 6 is lowered under load.

For this purpose, a displaceable swivel joint with a catch in the form of a toothing 30 is arranged at one end of the swivel arm 5, which is designed for a positive catch with an electromagnetically movable bolt 25. The electromagnetically movable bolt 25 is connected to the car body 12 and is controlled electrically by a control device 23, so that the positive locking can be produced and released via an electrical signal. The

In addition to the electromagnetically movable bolt 25, the control device 23 also controls the power drive 21 and thus the

Sequence of movements of the entire gap bridging 1.

Control signals 24 to a parent door or

Trolley control triggers the movement of gap bridging 1 and the current status of gap bridging 1 and error messages can be transmitted to the higher-level door or trolley control.

9 shows an example and schematically one

Gap bridging with an electrical catch in half extended position. The gap bridging 1 is off

Fig. 8 shown during the course of movement, the

Tread plate 6 has not yet reached its extended end position. The electromagnetic detent has not yet been established, the electromagnetically movable bolt 25 does not yet engage in the displaceable swivel joint with teeth 30.

10 shows an example and schematically one

Gap bridging with an electrical catch in the fully extended position. The gap bridging 1 from FIGS. 8 and 9 is shown, the tread plate 6 having reached its extended end position and abutting the platform 3. The electromagnetically movable bolt 25 engages in the toothing of the displaceable swivel joint 30.

11 shows an example and schematic of gap bridging with a mechanical catch in the retracted position. A gap bridging 1 is shown, similar to the basic embodiment shown in FIGS. 1 to 4, but a specific solution for blocking the displaceable swivel joint 14 is specified. This locking and unlocking of the displaceable swivel joint 14 takes place in the exemplary embodiment shown exclusively by the power drive 21 provided for the movement of the tread plate 6. There are no further drives, electromagnets or the like. required. The basic structure of the

Gap bridging 1 includes a slidably mounted

Step plate 6, a swivel arm 5, which one with a vertically displaceable swivel joint 14 with the car body 12

Rail vehicle is connected, as well as a rotary lever 9. The power drive 21 transmits its driving force not directly to the tread plate 6, but to a push and pull rod 31. On this push and pull rod 31, a pressure plate 36 is arranged, via which the actuating force to a Spring 35 is transmitted, the spring 35 forwards this actuating force to the tread plate 6.

In this way, the tread plate is elastically decoupled from the drive. It is essential that the elastic

Properties of the spring 35 are dimensioned such that the spring 35 is not, or is only minimally compressed when the tread plate 6 extends. This ensures that the push and pull rod 31 after the tread plate 6 has reached its extended end position and on the

Platform 3 is present, can still be moved a certain way. This additional actuation path, beyond that of the step plate 6, is according to the invention for the

Locking the slidable pivot joint 14 is used. For this purpose, the push and pull rod 31 is connected to a locking lever 33 at one end

Locking lever pivot point 34 is rotatably mounted on the swivel arm 5, and which extends at its other end to the displaceable swivel joint 14 and at this the

Locking and unlocking process triggers. The above-mentioned components are very difficult to see in the retracted position of the tread plate 6 shown in FIG. 11, but can be seen clearly in FIG. 14.

A rack 32 is provided on the car body side, into which a suitable detent in the displaceable

Swivel joint 14 can engage.

Fig. 12 shows an example and schematic gap bridging with a mechanical detent in the half-extended

Position. The gap bridging from FIG. 11 is shown, the tread plate 6 being extended

Has not yet reached the end position. The spring 35 is not compressed due to the low force required for the movement of the tread plate 6.

Fig. 13 shows an example and schematically

Gap bridging with a mechanical catch in the fully extended position. It's bridging the gap

11, wherein the tread plate 6 has still reached its extended end position. The tread plate is in contact with platform 3 and can thus, as with

Reaching the maximum extension which

Allows sliding storage 8, can not be extended.

The slidable swivel joint 14 has its intended

Shift 22 reached upwards, but is not yet locked, so that the tread plate 6 can not be entered.

Fig. 14 shows an example and schematically gap bridging with a mechanical detent in the fully extended and locked position. The gap bridging from FIG. 11 is shown, with the push and pull rod 31 through the

Power drive 21 was moved a certain further path section and thus the pressure plate 36

Spring 35 is compressed. This further actuation path is transmitted to the locking lever 33, which is deflected at its other end in such a way that it moves into the

Detent engages in the form of a rack 32 and the slidable pivot joint 14 in its vertical

Movability blocked. The tread plate 6 can be loaded in this locked position. To unlock the power drive 21 acts in the opposite direction of force on the push and pull rod 31, the first

Unlocking takes place until the spring 35 is relaxed and only then does the force required for retracting the tread plate 6 via the pressure plate 36 on the

Step plate 6 acts.

List of designations 1 gap bridging 2 cover plate 3 platform 4 gap 5 swivel arm 6 step plate 7 sliding swivel joint 8 sliding bearing 9 rotary lever 10 joint 11 retraction device 12 car body 13 floor plate 14 movable swivel joint with catch 15 stripper 16 joint 17 sliding surface 18 anti-slip surface 19 rotary axis 20 rotary lever joint 21 power drive 22 vertical displacement 23 control device 24 control signals 25 electromagnetically movable bolt 26 traction means 27 deflection device 28 lever 29 pivot point 30 sliding swivel joint with toothing 31 push and pull rod 32 rack 33 unlocking lever 34 unlocking lever pivot point 35 spring 36 pressure plate

Claims (13)

claims 1. Gap bridging (1) for a rail vehicle for bridging the gap (4) between a passenger compartment floor and a platform (3), comprising a step plate which is horizontally slidably mounted between a retracted position and an extended position and any number of intermediate positions by means of a power drive (21) (6) and a swivel arm (5) articulated to the tread plate (6) by means of a joint (10), characterized in that the swivel arm (5) is equipped with a vertically displaceable swivel joint (7) at its end facing away from the joint (10) , the displacement of the vertically displaceable swivel joint (7) being effected by the action of the power drive (21). 2. gap bridging (1) for a rail vehicle according to claim 1, characterized in that a rotary lever (9) is provided which is rotatably connected by means of a rotary lever joint (20) to the swivel arm (5) and wherein the rotary lever joint (20) facing away The end of the rotary lever (9) is arranged such that it can rotate about an axis of rotation (19) arranged on the car body (12) of the rail vehicle. 3. gap bridging (1) for a rail vehicle according to claim 1, characterized in that the displacement of the vertically displaceable swivel joint (7) takes place by means of a force transmitted via a traction mechanism. 4. gap bridging (1) for a rail vehicle according to claim 1 to 3, characterized in that a retraction device (11) is provided which exerts a restoring force in a rest position on the swivel arm (5). 5. gap bridging (1) for a rail vehicle according to one of claims 1 to 4, characterized in that the restoring force is applied to the swivel arm (5) by means of a spring. 6. gap bridging (1) for a rail vehicle according to one of claims 1 to 5, characterized in that the vertically displaceable swivel joint (7) is blocked in its vertical position when the tread plate is in the extended position. 7. gap bridging (1) for a rail vehicle according to claim 6, characterized in that the blocking of the vertical freedom of movement of the vertically displaceable swivel joint (7) takes place by means of a positive locking. 8. gap bridging (1) for a rail vehicle according to claim 7, characterized in that the blocking of the blocking of the vertical freedom of movement of the vertically displaceable swivel joint (7) is carried out by means of an electromagnetically movable bolt (25). 9. gap bridging (1) for a rail vehicle according to claim 8, characterized in that the movement of the electromagnetically movable bolt (25) by a control device (23) in dependence on the control device (23) guided control signals (24). 10. gap bridging (1) for a rail vehicle according to claim 6, characterized in that the blocking and the lifting of the blocking of the vertical freedom of movement of the vertically displaceable swivel joint (7) by means of the force applied by the power drive (21). 11. gap bridging (1) for a rail vehicle according to claim 10, characterized in that the power drive (21) acts on a push and pull rod (31) which is connected by means of a spring (35) to the tread plate (6), wherein after reaching the extended position of the tread plate (6), the push and pull rod (31) can be moved a further distance and this further movement can be transmitted to the displaceable swivel joint (14) via a locking lever (33) and on the displaceable swivel joint (14 ) actuated a blocking device. 12. gap bridging (1) for a rail vehicle according to one of claims 1 to 11, characterized in that a cover plate (2) above the tread plate (6) is provided in the region of the passenger compartment floor, said cover plate (2) on its edge on the platform side with a wiper (15) is provided. 13. gap bridging (1) for a rail vehicle according to claim 12, characterized in that the stripper (15) touches the tread plate (6), the contact force being at least reinforced by an elastic element (16).