WO2020035225A1

WO2020035225A1 - Kinematic coupling

Info

Publication number: WO2020035225A1
Application number: PCT/EP2019/068416
Authority: WO
Inventors: Gerhard Schmidt
Original assignee: Siemens Mobility GmbH
Priority date: 2018-08-17
Filing date: 2019-07-09
Publication date: 2020-02-20
Also published as: DE102018213946A1; EP3810480A1

Abstract

Disclosed are a kinematic coupling for kinematically coupling the car segments of multi-segmented rail vehicles, in particular multi-segmented rail vehicles with car segments having different dimensions, and a method for coupling the car segments by means of said coupling.

Description

Kinematic coupling

The invention relates to a kinematic coupling,

in particular a kinematic coupling of two car bodies of a multi-unit rail vehicle, between which there is an intermediate car body, and a method for coupling car segments by means of such

kinematic coupling.

In multi-unit rail vehicles, it is common to avoid large length requirements for crumple zones, which are used for

Driving through bends to use the necessary freedom of movement between the articulated individual car bodies of multi-unit rail vehicles for energy-absorbing deformation. The problem here is

Coordination of the crush zone forces in a sequence of wagons of significantly different masses in the train set. To effectively brake the heavy wagons on the available deformation path, high forces are required, which inevitably have to be carried over the easier paths in between. If mutually independent crumple zones (crash elements) are arranged on both sides of the light wagons, there is the problem that their level of force is very high compared to the mass of the wagons. Even small differences in the crushing forces on both sides lead to unacceptable

Accelerations.

A sufficiently precise and low-fluctuation adjustment of the characteristics of the crash elements is only possible to a limited extent and with great effort.

Previously executed vehicles from the full web area typically have similarly large masses and relatively long

Car bodies so that the problems listed above do not occur. Transition bridges between the vehicle segments have a comparatively very low mass, apply but not as occupied car bodies to which the strict limit values for accelerations apply.

Multi-part vehicle concepts are much more widespread in the area of trams. However, due to the much lower collision energies there is a targeted one

Energy consumption at the joints is unnecessary.

The above-mentioned problem becomes relevant in the case of innovative concepts in the full web area, for example

Vehicle connection devices are expanded so that they can be considered as separate, occupied car bodies.

So the task is to couple the

To provide wagon segments of multi-unit rail vehicles, in which a precise and low-fluctuation adjustment of the characteristics of the crash elements on both sides of lighter wagon segments can be dispensed with. Another object is to provide a method for coupling wagon segments of multi-unit rail vehicles by means of such a coupling.

These tasks are done with the kinematic coupling as well as the coupling method using a kinematic

Coupling solved according to the claims.

One aspect of the invention relates to a kinematic coupling that a first housing part with a first

Connection device for connection to a first carriage and a second housing part with a second

Has connection device for connection to a second car. Furthermore, the kinematic coupling according to the invention has one or more first drawstrings, each with a first end and a second end, and comprises a sleeve for connecting a car body, preferably one

Between the car body. The sleeve is in one

Longitudinal direction of the first housing part with respect to the first housing part and in a longitudinal direction of the second Movable part of the housing relative to the second housing part. The housing parts are connected to each other and can be moved against each other by a predefined nominal stroke. Each of the first drawstrings has the first end at the first

Housing part and with the second end connected to the second housing part and is guided in a bend around the sleeve.

If the stroke (i.e. the distance by which the two components A and B can be shifted against each other, or in other words: A can be shifted relative to B) is influenced by several components, the nominal is

Stroke is the distance that A and B are at one

Interaction of these several components to the maximum

move against each other. Since only this

Displacement of a first housing part compared to a second housing part is considered, the distance by which the first housing part is maximally displaceable relative to the second housing part is the nominal travel of the

kinematic coupling.

The terms “tying” or “tying” here and in the following are intended in particular to mean an “attachment”, a

"Attachment" or "assembly".

In one embodiment of the kinematic coupling, the position of the is for each of the first drawstrings

Connection to the first housing part and the position of the

Connection to the second housing part with reference to the

Longitudinal direction of the second housing part between the sleeve and the second connection device.

In one embodiment, the kinematic coupling furthermore has one or more second tension bands, each with a first end and a second end, each of the second tension bands being connected to the second housing part with the first end and to the first housing part with the second end and in a bend is guided around the sleeve. there is the position of the connection to the first housing part and the position of the connection to the second housing part with respect to the for each of the second tension bands

Longitudinal direction of the first housing part between the sleeve and the first connection device.

Advantageously, exactly two first tension bands with the same cross-section are used in the kinematic coupling, which are spaced apart from one another when being guided around the sleeve, and exactly one second tension band which is centered by the two first tension bands when being guided around the sleeve

is passed through.

In one embodiment of the kinematic coupling, at least one tension band is essentially one

semicircular bend around the sleeve.

This guiding around the sleeve advantageously runs around a predefined center angle on a circular arc. The circular arc preferably has a central angle between 145 ° and 200 °, more preferably between 160 ° and 190 °, most preferably between 170 ° and 185 °. The

Center angle can be 180 °; in this case, the drawstring is guided exactly semicircularly around the sleeve.

In one embodiment of the kinematic coupling is for each of the drawstrings, the free length of which is dimensioned in the starting position such that the drawstring can wrap or be guided around the sleeve between the housing parts during the entire nominal stroke, and preferably after moving the housing parts against each other by the total nominal stroke, the sleeve has been shifted by about half the stroke relative to each of the housing parts.

The “starting position” or “starting position” is understood here to mean an arrangement of the coupling elements, in particular of the first and second housing parts, in which the

Connection device of the first housing part for connection to a first carriage and the connection device of the second housing part for connection to a second carriage by a predefined distance from one another, the predefined distance preferably being the maximum distance between the first and second connection devices that the kinematic coupling permits.

Furthermore, the "free length" of a drawstring is the distance that results in the initial position as the distance between the contact of the drawstring on the sleeve and the connection of the drawstring to that part of the housing to which the longer distance between contact of the

Drawstring on the sleeve and connection to the housing part results.

In one embodiment of the kinematic coupling, at least one tension band is configured and / or the radius on which the tension band is guided around the sleeve is dimensioned such that a significant proportion of the deformation when the tension band is wound around the sleeve during the

Displacement of the housing parts against each other as

Plasticization takes place.

In one embodiment of the kinematic coupling, at least one of the first drawstrings is made of elongated one

Material, preferably sheet metal, of the second housing part is formed and / or at least one of the second drawstrings is made of elongated material, preferably sheet metal, of the first housing part.

In one embodiment of the kinematic coupling, one or more of the first drawstrings is / are welded at at least one end to the housing part to which this end is connected.

In one embodiment of the kinematic coupling, one or more of the second drawstrings is / are each on at least welded at one end to the housing part to which this end is connected.

In one embodiment of the kinematic coupling, at least one tension band is detachably connected to the housing part to which this end is connected at at least one of its ends.

In one embodiment of the kinematic coupling, each of the first tension bands is permanently attached to the second housing part with its first end and with the second end to the first housing part via a driving cam

connected. This connection is preferably positive. In addition, if there are second drawstrings, each of the second drawstrings can be permanently attached to the second housing part at its first end and connected to the first housing part at its second end via an inserted bolt.

In one embodiment of the kinematic coupling, the body, preferably one, is connected

Intermediate car box, to the sleeve via a driving pin. This connection is preferably form-fitting

designed.

In one embodiment, the kinematic coupling also has a device for irreversible energy consumption, preferably an energy absorber. In this case, for example, the device for irreversible energy consumption is arranged in the first housing part, and the second housing part is supported on the device for via a push rod

irreversible energy consumption.

Another aspect of the invention relates to a method for kinematic coupling, the coupling comprising: a first housing part with a first connecting device for connecting to a first carriage; a second housing part with a second connection device for connection to a second carriage; one or more drawstrings; and a sleeve for connecting a car body. The sleeve is in a longitudinal direction of the first housing part relative to the first housing part and in a longitudinal direction of the second

Housing part slidable relative to the second housing part, and the housing parts are connected to each other and

displaceable against each other by a predefined nominal stroke. Each of the drawstrings has two ends and is connected at one end to the first housing part and at the other end to the second housing part and is guided in a bend around the sleeve. After this

inventive methods shift the first

Housing part and the second housing part from one

Starting position out to each other up to a maximum of the predefined nominal stroke distance, the tension bands being deformed as they are pulled around the sleeve, and a displacement of the first housing part by a distance s with respect to the starting position relative to the second

Housing part shifts the sleeve by half the distance, ie by s / 2, with respect to each of the housing parts. The term "starting position" is used here in accordance with the above

Definition used.

The kinematic coupling according to the invention and that

The method according to the invention for kinematic coupling has the advantage that the acceleration of the - possibly light - intermediate car body is not limited by coordinating the deceleration forces, but by kinematic coupling with the two adjacent heavier cars.

In particular, two wagons (first and second housing part) adjoining an (intermediate) wagon body are connected rigidly or via reversibly elastic elements to a first and second housing part of the device. In this way, the entire irreversible, energy-consuming stroke can be displaced toward one another or as a displacement of the housing parts.

are mapped into each other. The advantage of kinematically controlling the position of a light (intermediate) car body between two heavy cars (housing parts) in the event of a collision is that the accelerations of the light car body are thereby inherently limited to the level of the heavy cars. A precise and low-fluctuation adjustment of crash elements is not necessary.

The principle of bisection by looping traction means is e.g. B. known from telescopic fire ladders. There is a rope attached to a first and a third conductor segment, the one to the second segment

attached roller is deflected by 180 °. With this coupling it is brought about that the second segment moves half the way in relation to the first, as does the third one in relation to the first, or neighboring segments each move the same way to one another. Typically, the drive takes place via hydraulic cylinders between the first and the second segment of the ladder, while embodiments of the coupling according to the invention arrange an energy absorber between the first (1) and the second - corresponding to the drive in the example of the described fire service ladder

Allow housing part (2) - corresponding to the first and third conductor segment.

In the kinematic coupling according to the invention, however, no ropes are used as the drawstrings, but instead

Full cross-sections made of ductile material in which

preferably a predominantly plastic bend is provided (functionally not necessary, but accepted). The

The advantage is that the full cross-sections can be connected to the structure of the housing parts without voluminous transition structures (e.g. eyelets and rope clamps).

The invention thus allows, in particular, a combination of wagon body segments of which is reliable in terms of manufacture and verification very different weights in an efficient crash train designed train.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will be more clearly understood in the

Relation to the following description of the

Embodiments that are explained in connection with the drawings. Show it:

FIG. 1 shows a longitudinal section through the kinematic coupling according to the invention in a starting position,

Figure 2 shows a plan view of the invention

kinematic coupling in a starting position,

FIG. 3 shows a cross section through the kinematic coupling according to the invention in a starting position,

FIG. 4 shows a longitudinal section through the kinematic coupling according to the invention when the housing parts are displaced relative to one another by approximately half

stroke,

Figure 5 shows a plan view of the invention

Kinematic coupling when the housing parts are shifted against each other by about half

Stroke, and

FIG. 6 shows a cross section through the kinematic coupling according to the invention when the housing parts are displaced relative to one another by approximately half

Stroke.

Figures 1 to 3 show an example of an embodiment of the kinematic coupling according to the invention in the

Starting position. The first housing part 1 (on the right in the figures) and the second housing part 2 (on the left in the figures) can each be connected to a trolley and connected to each other via a sleeve 5 (intermediate sleeve). The sleeve 5 is formed into a driving pin 6 to which an intermediate car (not shown) can be attached.

Figure 3 shows on the side of the second housing part (left in the figure) a first tension band 7, which is firmly connected at one end to the second housing part 2, around which the sleeve 5 is bent at an angle of slightly less than 180 ° and finally is attached to the first housing part 1 (right in the figure) by means of a driving cam 9. Since the connection of the first tension band 7 to the first housing part 1 is loaded under pressure (the housing parts move towards one another when loaded), the fastening via the driving cams 9 is sufficient here. The “free length” of the first tension band 7 is the distance between here whose concerns on the sleeve 5 and his

Attachment to the second housing part 2.

On the side of the first housing part (on the right in the figure) there is a second tension band 8, which is firmly connected at one end to the first housing part 2, is guided around the sleeve 5 in a bend at an angle of somewhat less than 180 ° and is finally fastened to the first housing part 1 by means of a bolt connection 10. Since the connection between the second tension band 8 and the first housing 1 is subjected to tension in the assembly direction, it is realized via a bolt connection 10. The “free length” of the second tension band 8 is here the distance between its contact with the sleeve 5 and its attachment to the first housing part 1.

The housing parts 1 and 2 each have slots of the same length. The sleeve 5 is movable within the two slots. The sleeve 5 is in the slots each by the slot length minus the diameter of the sleeve

slidably; the resulting length (slot length minus Sleeve diameter) corresponds to half of the predefined nominal stroke of the kinematic coupling.

In the example shown, a device for irreversible energy consumption, implemented by means of an energy absorber 3, is integrated in the first housing part 1.

Figures 4 to 6 show the kinematic coupling of Figures 1 to 3 in a corresponding view, but not in the starting position, but after by a

Loading of the coupling, the first housing part 1 has been displaced in the direction of the second housing part 2 by about half the nominal stroke (the slots of the two

Housing parts overlap approximately). As a result, the sleeve 5 has been displaced by approximately a quarter of the predefined nominal stroke (i.e. by approximately half the current displacement of the two housing parts from one another).

Although the invention in detail by preferred

Exemplary embodiments have been illustrated and described in more detail, the invention is not restricted by the disclosed examples and other variations can be derived therefrom by the person skilled in the art without the scope of protection of the

Leaving invention.

LIST OF REFERENCE NUMBERS

1 first housing part

2 second housing part

3 irreversible energy consumption

4 push rod

5 sleeve

6 drive pins

7 first drawstrings

8 second drawstrings

9 driving cams

10 bolts

Claims

claims

1. Kinematic coupling, comprising:

a first housing part (1) with a first

Connection device for connection to a first car; a second housing part (2) with a second

Connection device for connection to a second car; one or more first drawstrings (7) each having a first end and a second end; and

a sleeve (5) for connecting a car body;

the sleeve (5) in a longitudinal direction of the first

Housing part (1) relative to the first housing part (1) and in a longitudinal direction of the second housing part (2) relative to the second housing part (2) is displaceable;

the housing parts (1, 2) being connected to one another and being displaceable relative to one another by a predefined nominal travel; and

wherein each of the first drawstrings (7) is connected with the first end to the first housing part (1) and with the second end to the second housing part (2) and is guided in a bend around the sleeve (5).

2. Kinematic coupling according to claim 1, wherein for each of the first drawstrings (7) the position of the connection to the first housing part (1) and the position of the connection to the second housing part (2) with respect to the longitudinal direction of the second housing part ( 2) between the sleeve (5) and the second connection device.

3. Kinematic coupling according to claim 2, further

showing:

one or more second drawstrings (8) each with a first end and a second end,

wherein each of the second drawstrings (8) is connected with the first end to the second housing part (2) and with the second end to the first housing part (1) and is bent around the sleeve (5); and the position of the connection to the first housing part (1) and the position of the connection to the second housing part (2) with respect to the longitudinal direction of the first housing part (1) between the sleeve (5) and the first connection device.

4. Kinematic coupling according to one of claims 1 to 3, wherein exactly two first drawstrings (7) are used with the same cross-section, which are spaced apart when being guided around the sleeve (5), and exactly a second drawstring (8) is used , which is guided in the middle around the sleeve (5) through the first two drawstrings (7).

5. Kinematic coupling according to one of claims 1 to 4, wherein at least one tension band (7, 8) in a substantially semicircular bend, preferably on a circular arc with a central angle between 145 ° and 200 °, more preferably between 160 ° and 190 ° , most preferably between 170 ° and 185 °, around the sleeve (5).

6. Kinematic coupling according to one of claims 1 or 5, wherein for each of the tension bands (7, 8), the free length of which is dimensioned in the starting position such that the tension band (7,

8) throughout the nominal stroke between the

Can wrap housing parts (1, 2) around the sleeve (5), and preferably after moving the housing parts (1, 2)

against each other by the entire nominal stroke, the sleeve (5) has been displaced by approximately half the stroke relative to each of the housing parts (1, 2).

7. Kinematic coupling according to one of claims 1 to 6, wherein at least one tension band (7, 8) is configured and / or the radius on which the tension band (7, 8) around the sleeve

(5) is led around so dimensioned that a

substantial proportion of the deformation when winding the tension band (7, 8) around the sleeve (5) during the displacement of the Housing parts (1, 2) against each other as plasticization

he follows .

8. Kinematic coupling according to one of claims 1 to 7, wherein at least one of the first drawstrings (7)

elongated material, preferably sheet metal, of the second

Housing part (2) is formed and / or at least one of the second tension bands (8) of elongated material, preferably sheet metal, of the first housing part (1) is formed.

9. Kinematic coupling according to one of claims 1 to 8, wherein one or more of the first drawstrings (7)

at least one of its ends with the corresponding one

Housing part (1, 2) is / are welded; and or

wherein one or more of the second drawstrings (8)

at least one of its ends with the corresponding one

Housing part (1, 2) is / are welded.

10. Kinematic coupling according to one of claims 1 to 9, wherein at least one tension band (7, 8) is detachably connected to the corresponding housing part (1, 2) at at least one of its ends.

11. Kinematic coupling according to one of claims 1 to 7, wherein each of the first drawstrings (7) is permanently fixed with its first end to the second housing part (2) and with its second end via a driving cam (9) with the first housing part ( 1) is connected, preferably positively connected; and

where, as far as the claim depends on three, each of the second drawstrings (8) each with its first end

is permanently attached to the second housing part (2) and its second end is connected to the first housing part (1) by means of a plug (10).

12. Kinematic coupling according to one of claims 1 to 11, wherein the connection of the car body, preferably an intermediate car body, to the sleeve (5) via a Driving pin (6) takes place and is preferably designed to be form-fitting.

13. Kinematic coupling according to one of claims 1 to 12, further comprising an irreversible device

Energy consumption (3), preferably an energy absorber;

for example, the facility for irreversible

Energy consumption (3) is arranged in the first housing part (1) and the second housing part (2) is supported via a push rod (4) on the device for irreversible energy consumption (3).

14. Method for the kinematic coupling of the car segments of multi-unit rail vehicles, the coupling

having :

a first housing part (1) with a first

Connection device for connection to a second car; one or more drawstrings (7, 8); and

a sleeve (5) for connecting a car body;

the sleeve (5) in a longitudinal direction of the first

wherein each of the drawstrings (7, 8) has two ends and one end is connected to the first housing part (1) and the other end to the second housing part (2) and in one

Bend is guided around the sleeve (5);

wherein the first housing part (1) and the second

Move the housing part (2) out of an initial position up to a maximum of the predefined nominal stroke,

wherein the drawstrings (7, 8) are deformed as they are pulled around the sleeve (5), and wherein when the first housing part (1) is displaced by a distance s with respect to the starting position relative to the second housing part (2), the sleeve (5) by half

Distance s / 2 with respect to each of the housing parts (1, 2)

shifts.