EP2744674A1

EP2744674A1 - Bellows for a communication passage between two vehicles connected to each other in an articulated manner or bellows for air passenger boarding steps or an air passenger boarding bridge

Info

Publication number: EP2744674A1
Application number: EP12758738.4A
Authority: EP
Inventors: Claus-Ekkehard Koukal; Reinhard Hübner
Original assignee: Huebner GmbH and Co KG
Current assignee: Huebner GmbH and Co KG
Priority date: 2011-08-17
Filing date: 2012-07-04
Publication date: 2014-06-25
Also published as: BR112014003392A2; DE102011110873B4; US20140291938A1; CN103857543A; WO2013023634A1; DE102011110873A1

Abstract

The invention relates to a bellows for a communication passage between two vehicles connected to each other in an articulated manner or a bellows for air passenger boarding steps or an air passenger boarding bridge, wherein the bellows comprises, in the longitudinal direction thereof, a plurality of bellows frames, wherein the bellows comprises an at least single-layer reinforcement that is coated on at least one side with an adhesive, wherein the reinforcement has guides for the bellows frames, wherein the coated reinforcement is under tensile stress at least between two bellows frames in the circumferential direction of the bellows.

Description

BALCONY OF A TRANSITION BETWEEN TWO RIDELY CONNECTED VEHICLES, BALCONY OF A PASSENGER PILLAR, OR PASSENGER BRIDGE

The invention relates to a bellows of a transition between two articulated vehicles or the bellows of a passenger stairway or jetway, wherein the bellows in the longitudinal direction of the bellows has a plurality of bellows frame, wherein the bellows one at least one layer

Reinforcements has, at least on one side with a

Plastic coated, wherein the strength member has guides for the bellows frame. The term plastic also refers to elastomers below.

A bellows of the type mentioned is known from DE 10 2006 061 503 A1. The subject of this reference is a material web for the production of a bellows, wherein the material web with a

Plastic layer is coated, wherein the web has a textile upper and a textile underside, wherein for forming a so-called spacer fabric between top and bottom spacer threads, so-called pile threads are provided. In the space between the textile top and the bottom of the textile top and bottom connecting pile threads are provided in the circumferential direction of the bellows extending lanes, which serve to accommodate bellows frame. The bellows frame are in this case according to the material web U-shaped or box-shaped circumferentially formed, wherein the bellows frame at least in Area of the bottom of the bellows releasably connectable to each other. This is why, in order to be able to put such a bellows over a transition bridge or a platform, in addition to the bellows part of a

Transition between two articulated vehicles is.

The use of such a spacer or pile fabric for a bellows for producing a bellows has quite advantages, in particular with regard to a simple and thus inexpensive production of such bellows. Such a bellows is also heat-insulating and

sound-absorbing.

Bellows, especially when articulated as bellows between two

are interconnected vehicles are the

Subject to a variety of driving movements. Thus, bellows that are part of a rail vehicle, not only roll, pitch and kink movements, but must also be able to withstand forces resulting from a transverse offset of the vehicle parts

Rail vehicle result. In addition, of course, also occur superimposed movements of the aforementioned types of movement.

In particular, in a Gelenkbus the large bending angle of up to 54 ° are noted, the one the two car bodies of such

Articulated bus connecting bellows must be able to yield. In addition, a Busbalg must of course be able to follow occurring roll and pitch movements. It has now

pointed out that a bellows with a spacer knit according to DE 10 2006 061 503 A1 is quite capable of the aforementioned

To follow movement arenas. However, it has also been found that the coated with an elastomer textile upper and lower side has increased wear. In detail, it has turned out that the elastomer layer separates from the textile top and bottom. The reason for this is that during the deformation of the bellows, in particular in the corner region, the textile material does not bend in a defined manner. That is, the buckling of the fabric web forming the bellows is essentially always even with identical movements of the bellows

differently. This results in the detachment of the coating from both the textile top and bottom.

From PCT / DE2007 / 00221 1 a bellows is known, wherein the bellows material i o is formed as a pile fabric. The pile fabric has certain

Clearance lanes for alternately receiving bellows frame and ropes. By means of the cables, the bellows is constricted between two bellows frames in order to bring about a defined buckling of the bellows upon deformation of the bellows. Due to the constriction of the bellows, however, 15 folds form in the corner area. These wrinkles rub against each other. The bellows material consists of an elastomer-coated reinforcement. This elastomer coating dissolves when rubbing the wrinkles together. In this respect, after a short time, the bellows irreversibly damaged and must be replaced.

20

The object underlying the invention is therefore to provide a bellows of a transition of the type mentioned, which is subjected to less wear.

In order to achieve the object, it is proposed according to the invention that the coated reinforcing element is under tension in the circumferential direction of the bellows, at least between two bellows frames. Is the material of the bellows, so the coated especially single-ply

Reinforcement, which may be formed as a woven, knitted or knitted fabric

3o can, in the circumferential direction of the bellows between the bellows frame

biased, the result is a waveform for the bellows, without in the Corner kinks or wrinkles arise. The larger the tensile stress applied to the strength member between two bellows frames, the more pronounced the waveform is. It has been found that with sufficient tensile stress of at least one-ply

5 strength member in a deformation of the bellows, the bellows always deformed in the same way, d. h., A defined wrinkling of the at least single-layer strength member is achieved in particular in the corner. It has been found that by such a bias of the strength of the wear by detaching the

i o plastic coating can be significantly reduced.

To produce such a bias is provided in detail according to a first variant, that the two ends of plastic-coated reinforcing members have eyes that serve to accommodate 15 traction means, such as tension cables, turnbuckles or the like, in order in this way the corresponding bias on the coated strength carrier, which forms the material web for the bellows, apply.

A second variant is characterized in that the two ends of the plastic-coated reinforcement are connected to each other by a tab under tensile stress. The tab may in this case have a width which corresponds approximately to the width of the bellows. From this it is clear that the flap is formed in the manner of a ground cloth.

25 The bottom cloth can be connected by Velcro straps to both ends with the coated strength member of the bellows, with the possibility of firmly connecting the tab on one side of the reinforcement, so z. B. to glue and on the opposite side by a Velcro tape (velcro tape) with the coated

30 strength carrier of the bellows make a connection. The material the tab preferably corresponds to that of the coated strength member of the bellows.

Advantageous features of the invention are the subclaims

5.

It is thus provided in particular that, for the formation of the guides for the bellows frames, the reinforcing member has at least one further layer of a reinforcing member. There are here several ways to i o formation of the aforementioned guides for the bellows frame. On the one hand, it is possible to form guides in the form of loops by doubling a further layer of a reinforcing element. The

Connection between the layers of the reinforcement can hereby by sewing, Verwirk, entangling or even for example by gluing

15 done. It is essential only that a free space in the form of a sleeve-shaped guide is created, which serves to accommodate the respective bellows frame with a certain play. It is also conceivable, however, to apply to the at least single-layer reinforcing member another, at least single-layer reinforcing member, over the entire

20 surface of a first strength member, but wherein the second

Reinforcement to the first strength member at certain intervals sleeve-shaped circumferential cavities for receiving the bellows frame. The connection of the first strength member to the second strength member may in this case by sewing with the aid of threads or

25 yarns or by gluing or welding done.

According to a further feature of the invention it is provided that the bellows frame are slidably received in the guides or loops. It was already mentioned at the outset that such a bellows the

30 different types of movement is subjected. It has now been found that the wear of the bellows as such essential can be reduced if the bellows frame is allowed to move within the guides. This means that the bellows frame relative to the surrounding strength members perform a relative movement.

This relative movement should be hindered as little as possible, which is why 5 is also provided in particular that the bellows frame or the guides themselves with a lubricant, for. As a PTFE coated. Advantageously, the bellows frames are slidably guided in a PTFE tube.

It has already been pointed out that an elastic fabric, a knitted fabric or a knitted fabric can be used as the strength element.

Knitted fabrics and knitted fabrics are intrinsically elastic knits. That is, a reinforcement made of a knitted fabric or a knitted fabric is, after being coated with a plastic, by such a material

impermeable to water, as a fabric in both

15 spatial directions highly elastic. Also a tissue can be in one

Spatial direction be elastically yielding, namely, if such a fabric has elastic threads, yarns or ribbons. If both the warp and the weft threads or even bands are elastically yielding in a tissue, then there is a so-called

20 bidirectionally elastic tissue before. Such fabrics are also excellent for the production of reinforcements in the form of fabrics for the purposes described above. However, it is also conceivable to use such elastic threads for a knit or knit fabric. Such elastic threads, yarns or ribbons can be made

25 a crosslinked elastomer, z. As a silicone elastomer or an organic elastomer. The organic elastomers include in particular the substances CSM, EPDM, AEM, etc. Also the

Coating of the reinforcement can be done according to the

Requirements made of a variety of plastics

30, so can the coating based on a silicone rubber take place or even an organic rubber, for. As a CSM, CM, EVA, EPDM, AEM or a PVC.

It has already been noted that the requirements for a bellows in road and rail transport quite

are different. Thus, bellows are often exposed to rail misalignment, as it occurs when such a rail vehicle, for example, drives over an S-shaped turnout. Articulated buses must be able to pass the so-called unit circle, which requires that curve radii of up to 54 ° must be passed. On the inside of the curve, this leads to an extreme compression of the bellows, whereas on the outer side of the curve an extreme stretching of the bellows takes place. That is, on the outer side of the curve, all of the pleats or waves forming the bellows are used to provide the required extension width. In particular, for use on the road, for example in an articulated bus has now been found that the bellows according to the invention is then subjected to low wear, when in the longitudinal direction of the bellows behind each other and spaced apart bellows have a different circumference, d. h., Especially in the installed state of the bellows, the horizontal leg of the

Bellows frame are formed shorter to the respective adjacent bellows frame. This means that the bellows frames are all the same height, if one assumes the installed state of such a bellows, every second

Bellows frame, however, has a smaller horizontal extent, ie a smaller width than the adjacent bellows frame in the installed state.

When driving through curves has already been noted that on the outside of the curve, the bellows a considerable range of distance to

On the other hand, on the inside of the curve, the bellows must be one subject to considerable compression. Due to the different size of the bellows frame with respect to their horizontal extension in

Installation state migrates when passing through a curve of each smaller in size of the bellows frame in his leadership on the outside of the curve, in which case due to this horizontal displacement on the

Curve outside to a material reserve is relocated to the outside of the curve, which helps there provides the required range. That is, the tighter the curve that must be traversed, the farther the circumferentially smaller bellows frame travels outwardly in the guide, thus providing for the

Provision of the required range on the

Curve outside of the vehicle. There is enough material on the inside of the curve so that the bellows frame is not inhibited in its movement towards the outside of the curve. The leadership, z. B. in the form of a loop, takes the bellows frame made of metal or a composite material with game, where appropriate, the bellows frame is provided with a sliding layer, for. B. stored in a PTFE tube.

With reference to the drawings, the invention will be explained in more detail below by way of example.

Fig. 1 shows schematically a bellows with respect to the circumference of the bellows equal sized bellows frame;

Fig. 1 a shows a bellows according to Figure 1 in a neutral position in one

View from above;

FIG. 1b shows a bellows according to FIG. 1 with transverse offset

View from above; Fig. 1 c shows a bellows according to Figure 1 in the case of compression in a view from above;

Fig. 2 shows a bellows, wherein each second bellows frame in

Circumferential direction has a smaller width;

Fig. 2a shows such a bellows according to Figure 2 in a neutral position in a view from above;

FIG. 2b shows a bellows according to FIG. 2 in a bent position

(Cornering) in a view from above;

Fig. 3 shows schematically the section through a single-ply

Reinforcing member having a second reinforcing member arranged thereon to form a loop for receiving a bellows frame in the form of a loop

Guide.

Fig. 4. shows a representation according to FIG. 1, but to the

Connection of the ends of the bellows a tab is provided.

The illustrations in the figures are merely schematic. The bellows designated 1 shown in Figure 1 has a plurality of bellows frame 5 arranged one behind the other, wherein the bellows frame to form the bellows 1 have the at least one side coated with a plastic reinforcing member 10. The strength member 10 is as a

Material web formed, which shows 5 corresponding guides 20 for receiving the plurality of bellows arranged behind one another, which will be discussed later on elsewhere. The bellows shown in Figure 1 comprises bellows frame 5, which are equal in size to the circumference are formed. It can be seen that the reinforcing element 10 designed as a material web has a pronounced between the bellows frame 5

Waveform (arrow 15). The waveform is generated by the material web formed by a plastic carrier coated with a plastic in the region of the open end of the material web in the

Bottom region of the bellows has opposite loops 7, which are connected by a traction means 8 with each other. The traction means 8, such as a turnbuckle or a rope, ensures when applying appropriate voltage for that between the

Balgrahmen 5 of coated with a plastic layer strength member of this strength carrier occupies the previously mentioned waveform, as is also apparent in view of Figure 1.

The embodiment of FIG. 4 differs from that of FIG. 1 in that the ends of the reinforcing member of the bellows in

Floor area are connected by a tab 18 under tension with each other. The tab 18 has a width that of a

Ground cloth corresponds. This means that when worn such a floor cloth this can be replaced. But that also means that with a corresponding width of the bottom cloth, the wear of the bellows in the bottom region and in particular of the coated reinforcement can be minimized. To attach the tab 18 Velcro or Velcro strips are provided on both sides, which extend along the bellows. The tab is preferably made of the same material as the coated strength member of the bellows. The attachment can not only be done by Velcro (Velcro bands), but z. B. also by gluing, or a combination of bonding and loop tape.

Such a constructed bellows is particularly suitable for use in rail vehicles. After all, rail vehicles only drive through curves with a small radius, although they sometimes show when driving over them of S-shaped points a considerable transverse offset. Such a bellows is such a bellows, as shown in Figure 1 b, very well able to follow. That is, the bellows shifts in the transverse direction. In FIG. 1 a, the neutral position of the bellows can be seen, and in FIG. 1 c the compressed position of the bellows.

The representation according to FIG. 2 differs from the representation according to FIG. 1 in that here bellows frames 5, 5a of different widths are used. On a bellows 5 follows a bellows frame 5 a, the lateral extent in the direction of arrow 4, so its width, is less than that of the respective adjacent bellows frame 5. However, there is also a pronounced waveform from the

Coated strength member 10 formed material web, which receives the individual bellows 5, 5a. The reinforcing member 10 forming the material web, just like the bellows according to FIG. 1, has eyelets 7 in the region of its open end on both sides. B. by a turnbuckle or a rope are connected to each other to stretch the reinforcement in the circumferential direction, whereby the already mentioned waveform - in the illustration of Figure 2 indicated by the arrow 15 - results. Looking at this

Referring now to Figures 2a, 2b, one recognizes the deformation of such a bellows when passing through a curve. FIG. 2 shows the starting position, ie the neutral position of the bellows, whereas FIG. 2b shows the representation of the bellows when cornering. It can be seen from FIG. 2b that the bellows frame 5a with the smaller frame width travels on the outer side of the curve in the direction of the arrow 30 and thereby provides a reserve of material there, which makes it possible to obtain the required material

To provide extension width on the curve outside. On the inside of the curve, the bellows is compressed. This creates the

Material reserve, which by displacement of the bellows frame 5a on the outside of the curve finally there at least partially for the required elongation ensures. However, if the material of the bellows, so the coated strength member, is not only elastic in the circumferential direction, but also in the longitudinal direction of the bellows, ie parallel to the vehicle longitudinal axis, then also by the material of the bellows, a certain elongation can be provided when cornering, ie that material can be saved. The coated skill carrier is then bidirectionally elastic.

From Figure 3, the arrangement of the bellows frame is at the with a

Plastic layer 1 1 provided strength member 10 recognizable. The strength member 10 has another in this context

Reinforcement member 12, wherein the strength member 12 may also be formed as a woven, knitted or knitted fabric. Also, this strength member 12 may be provided on the outside with a plastic layer, such as an organic elastomer. Of the

Reinforcing member 12 is connected to the reinforcement 10, either by stitching, forking, knitting, welding or gluing. The compound of the reinforcing member 12 on the reinforcement 10 is carried out to form guides 20 in the form of loops for

Recording of the respective bellows frame 5, 5a. To form the waveform, finally, both strength members 10, 12 between the

Bellows frame 5, 5a stretched, especially if z. Two

Reinforcements over the entire surface, except for the guides

connected to each other. In order to ensure the sliding movement, in particular of the bellows frame 5 a in the guide 20, which is designed in the manner of a loop, is advantageous the bellows 5 a in a tube 6 made of a lubricious material, for. B. a PTFE stored. This does not exclude that the bellows frame 5 is slidably mounted.

In particular, for this purpose, the storage of the bellows frame 5, 5a with play in the respective guides 20th LIST OF REFERENCE NUMBERS

1 bellows

4 arrow

5 bellows frame

5a bellow frame

6 hose

7 eyelet

8 traction means

10 reinforcements

12 reinforcement

15 arrow

17 Velcro tape

18 tab (floor cloth)

20 guide (loop)

30 arrow

20

Claims

Claims:

1. bellows (1) of a transition between two hinged together

connected vehicles or bellows of a passenger staircase or

Passenger bridge, wherein the bellows (1) in the longitudinal direction of the bellows a plurality of bellows frame (5, 5a), wherein the bellows (1) has an at least one layer strength carrier (10) which is coated on at least one side with a plastic, wherein the

Reinforcing member (10) has guides for the bellows frames (5, 5a), characterized

the coated reinforcement (10) is under tension in the circumferential direction of the bellows, at least between two bellows frames (5, 5a).

2. bellows according to claim 1,

characterized,

that the reinforcement (10) is designed as a woven, knitted or knitted fabric.

3. Bellows according to one of the preceding claims,

characterized,

in that, to form the guides for the bellows frames (5, 5a), the reinforcement (10) has a second layer of a reinforcement (12) at least in the region of the guides.

4. bellows according to claim 3,

characterized,

the two layers of a reinforcement (10, 12) are joined together by sewing, forking, knitting, gluing or welding.

5. Bellows according to one of the preceding claims,

characterized,

in that the bellows frames (5, 5a) are slidably received in the guides (20).

6. Bellows according to one of the preceding claims,

characterized,

the bellows frames (5, 5a) are received with play in the guides (20).

7. Bellows according to one of the preceding claims,

characterized,

the strength element (10, 12) is elastic at least in the circumferential direction of the bellows (1).

8. Bellows according to one of the preceding claims,

characterized,

the reinforcement (10, 12) comprises elastic threads, yarns, tapes or fibers.

9. Bellows according to one of the preceding claims,

characterized,

in that the bellows frames (5, 5a) arranged one behind the other in the longitudinal direction of the bellows (1) each have alternately a different horizontal extension.

10. Bellows according to one of the preceding claims,

characterized,

in that the coating of the reinforcement (10, 12) is based on a silicone rubber or an organic rubber.

11. Bellows according to one of the preceding claims,

characterized,

that the bellows frame (5, 5a) and / or the guides (10, 12) with a coating, for. B. are provided a PTFE.

12. Bellows according to one of the preceding claims,

characterized,

that the bellows frame (5, 5a) in a hose (6) made of a lubricious material, for. B. PTFE are stored.

13. Bellows according to one of the preceding claims,

characterized,

in that the strength element (10) is elastically yielding in two spatial directions.

14. Bellows according to one of the preceding claims,

characterized,

that for applying the tension one of the ends of the

Coated strength member (10) of the bellows connecting tab (18) is provided.

15. bellows according to claim 14,

characterized,

the tab (18) is connected to the coated reinforcing element (10) of the bellows by means of Velcro strips (17).

16. bellows according to claim 14,

characterized,

in that the tab (18) extends over a substantial part of the width of the bellows.