EP0928731B1 - Device for coupling a movable operating unit to the hauling/traction cable of a cableway installation - Google Patents

Description

The subject invention relates to a device for coupling a driving equipment, e.g. a cabin or an armchair to which the conveyor or pull rope of a cable car system, consisting of one with rollers provided clamping body, which is rigidly attached to the clamping body first jaw and with one opposite the first jaw adjustable second jaw is formed, the second jaw is located on a clamping lever, which also a control element interacting with control rails, in particular a control roller is provided, through which the clamping lever counter the effect of at least one spring accumulator, e.g. a torsion spring, is pivotable relative to the clamping body, whereupon the clamping lever held in one of two over-center positions by means of the spring accumulator becomes.

Such a coupling device is known from EP 621 163 B1. In this known device, a two-armed clamping lever is provided, a control roller is supported at one end and at the other at the other end is the second jaw. There is also a spring mechanism provided, which with the clamping lever via a toggle joint interacts. The pivoting of the clamping lever is done by causes the control roller, being through the connecting line between the Swivel axis of the clamping lever and the articulation axis of the toggle joint on the clamping lever in relation to one of the two levers of the toggle joint a dead center position of the clamping lever is defined. In one of This dead center position deviating first position becomes the clamping lever blurred by the spring accumulator in the open position of the second jaw and held in this and in a different from the dead center position second position of the clamping lever is this by the spring accumulator pivoted into the closed position of the second jaw and in this kept. The pivoting of the by means of the control role Clamping lever from one of these two positions takes place in the first Part of the travel against the action of the spring mechanism.

This known coupling device is very advantageous because the clamping lever and thus the adjustable clamping jaw located on it are always in a defined position. Once a driving resource is to be coupled to the conveyor or pull rope, runs Control roller on a control rail, whereby the clamping lever from the Open position of the second jaw in the closed position of the second Clamp jaw adjusted and subsequently by the spring in this Position is held. As soon as the driving equipment from the conveyor or If the pull rope is to be uncoupled, the clamping lever is operated using the control roller against the effect of the spring accumulator beyond the dead center position pivoted back, causing the second jaw to the open position arrives in which it is also held by the spring accumulator becomes.

This therefore makes a very simple structural design of a Cable car system achieved because only such control rails are provided need to be, by which a pivoting of the clamping lever of a first position in the second position or from this back to the first position is effected. As a result, the number of actuating movements of the clamping lever compared to the prior art on the Half diminished.

This known coupling device is then the requirements not correspondingly if operating conditions in a cable car system can occur through which the driving resources compared to the Conveyor or traction rope rotating movements approximately perpendicular to the Rope aligned axis can run. It is referred to that the length of the conveyor or traction rope extending adjustable jaw approximately five times the diameter of the rope can have. As a result, such rotary movements of the driving equipment with respect to the conveyor or pull rope between the ends of the adjustable in the longitudinal direction of the rope facing away from each other Clamping jaw and the fixed jaw so large torques occur that the two jaws against the action of the spring accumulator be moved so far apart that the clamping lever out the closed position of the adjustable jaw over the dead center position also pivoted into the open position of the adjustable jaw becomes. Since he then held in this position by means of the spring accumulator is thereby the driving equipment from the conveyor or pull rope without Control uncoupled from the control roller.

Such conditions can, on the one hand, be used during very strong winds a cable car system occur, which therefore endangers the Passengers is conditioned because the driving equipment is uncoupled from the rope can be. Such operating conditions can occur at very high wind speeds on the other hand also occur when the cable car system is not in operation, whereby the driving equipment is also from the rope can be uncoupled. Although this does not mean that passengers are endangered takes place as soon as the cable car system is back is switched on, therefore malfunctions due to the relevant Driving equipment at the correct distance from the other driving equipment have to be coupled to the rope again. Such rotary movements of the driving equipment through which the Clamping devices can be adjusted to their open position in the event of strong transverse vibrations of the driving equipment, if they have support brackets or other driving equipment collide.

The object of the invention is therefore based on the task to improve such coupling device to the extent that very unfavorable operating conditions adjustable jaw in its open position with certainty avoided become. This is achieved according to the invention in that at least one of the two jaws with at least one of their clamping surfaces in relation is formed on the rope opposite stop surface, to which the rope when the clamp body is twisted by one across the rope aligned axis comes to rest.

Preferably, the adjustable jaw is one of the clamping surface formed in relation to the rope opposite stop surface. there the adjustable jaw can be adjusted in the longitudinal direction of the jaws seen on both sides of the fixed jaw with at least one extension be formed, through each of which a stop surface for the rope is formed.

According to an alternative embodiment, the rigidly attached jaw is with one opposite the clamping surface with respect to the rope Stop surface formed. The rigidly attached jaw can seen in the longitudinal direction of the jaws on both sides of the adjustable Clamping jaw can be formed with at least one extension which each have a stop surface for the rope.

One of the two clamping jaws is preferably approximated with at least one semicircular recess for receiving the rope, whose diameter is slightly larger than the diameter of the rope and which extends over more than 180 °, through the inner surface this recess, the clamping surface and the at least one stop surface are formed. The recess can extend over an angle extend from about 200 ° and the clear width of the recess can be about 20% larger than the diameter of the rope. According to another preferred The embodiment is the sum of the lengths of the stop surfaces one of the two clamping jaws and the clamping surface of the other The jaw is equal to the length of the clamping surface of the one jaw.

Fig. 1

eine erste Ausführungsform einer erfindungsgemäßen Kupplungsvorrichtung, wobei sich die verstellbare Klemmbacke in ihrer Schließstellung befindet, in Seitenansicht;

Fig. 1a

die Kupplungsvorrichtung gemäß Fig. 1, wobei sich die verstellbare Klemmbacke in ihrer Offenstellung befindet, in Seitenansicht;

Fig. 2

die Kupplungsvorrichtung gemäß Fig. 1, in Draufsicht;

Fig.3

den Klemmhebel dieser Kupplungsvorrichtung, in Seitenansicht;

Fig. 4

die beiden Klemmbacken dieser erfindungsgemäßen Kupplungsvorrichtung im Zusammenwirken mit dem Förder- bzw. Zugseil bei in Schließstellung befindlicher verstellbarer Klemmbacke und bei einer Drehlage des Klemmkörpers gegenüber dem Förder- bzw. Zugseil, in horizontalem Schnitt und in abgebrochener Darstellung;

Fig. 5

diese Kupplungsvorrichtung mit in Schließstellung befindlicher verstellbarer Klemmbacke bei einer Drehlage des Klemmkörpers, in Draufsicht;

die Fig. 6 bis 9

Darstellungen gemäß der Fig. 4 bei unterschiedlichen Drehlagen des Klemmkörpers gegenüber dem Förder- bzw. Zugseil, jeweils im horizontalen Schnitt;

die Fig. 6a, 6b bis 9a, 9b, 9c

die Schnitte nach den Linien A-A, B-B und C-C der Fig. 6 bis 9;

Fig. 10

eine zweite Ausführungsform einer erfindungsgemäßen Kupplungsvorrichtung, in horizontalem Schnitt und in abgebrochener Darstellung;

die Fig. 10a, 10b und 10c

die Kupplungsvorrichtung gemäß Fig. 10 im Schnitt nach den Linien A-A, B-B und C-C der Fig. 10, und

Fig. 11

eine Darstellung gemäß Fig. 10 bei einer starken Drehlage des Klemmkörpers gegenüber dem Förder bzw. Zugseil.

Coupling devices according to the invention are explained in more detail below with reference to two exemplary embodiments shown in the drawing.
Show it:

Fig. 1

a first embodiment of a coupling device according to the invention, wherein the adjustable jaw is in its closed position, in side view;

Fig. 1a

the coupling device according to Figure 1, wherein the adjustable jaw is in its open position, in side view.

Fig. 2

the coupling device of Figure 1, in plan view.

Figure 3

the clamping lever of this coupling device, in side view;

Fig. 4

the two clamping jaws of this coupling device according to the invention in cooperation with the conveyor or traction cable with the adjustable clamping jaw in the closed position and with a rotational position of the clamping body relative to the conveyor or traction cable, in a horizontal section and in a broken view;

Fig. 5

this coupling device with the adjustable jaw located in the closed position in a rotational position of the clamping body, in plan view;

6 to 9

4 with different rotational positions of the clamping body relative to the conveyor or pull rope, each in a horizontal section;

6a, 6b to 9a, 9b, 9c

the sections along the lines AA, BB and CC of Figures 6 to 9.

Fig. 10

a second embodiment of a coupling device according to the invention, in horizontal section and in broken view;

10a, 10b and 10c

10 in section along the lines AA, BB and CC of FIG. 10, and

Fig. 11

a representation of FIG. 10 with a strong rotational position of the clamping body relative to the conveyor or pull rope.

The coupling device shown in FIGS. 1 to 3 contains one Clamping body 1, to which a rod 11 is fastened, which is a driving resource, e.g. a cabin or an armchair. On the clamp body 1 further rollers 12 and 13 are mounted, by means of which the clamping body 1 in the stations of the cable car system along rails 12a and 13a is led. The clamping body 1 is designed with a clamping device 2, which a rigidly attached jaw 15 and an adjustable Has jaw 25.

The clamping device 2 also contains a likewise on the clamping body 1 attached spring accumulator in the form of a torsion spring 3, on which a first lever 21 is attached, at the free end of a second lever 22 articulated is. The other end of the second lever 22 is in a bearing 22a a clamping lever 23 mounted, which in turn in a bearing 23a Clamping body 2 is mounted. The two levers 21 and 22 form an intermediate the torsion spring 3 and the clamping lever 23 effective toggle joint.

The left end of the clamping lever 23 in the drawing is the second Clamping jaw 25, which is formed by pivoting the clamping lever 23 is adjustable by means of a control roller 24, whereby it can be adjusted by means of the Torsion spring 3 is held in the relevant position. The other end of the clamping lever 23 is formed with the control roller 24, which in the stations of the cable car system runs on control rails 24a, whereby the clamping lever 23 is pivoted such that the adjustable Jaw 25 each in the other position in which it passes the torsion spring 3 is held.

In Fig. 1 that position of the clamping device 2 is shown in which the adjustable jaw 25 is in its closed position, whereby the clamping body 1 is coupled to a rope 5. Is located the articulation point 21a of the two levers 21 and 22 of the toggle joint between the torsion spring 3 and that line which the bearing 23a of the clamping lever 23 on the clamping body 1 and the bearing 22a of the second Lever 22 connects to the clamping lever 23. Since the first lever 21 of the toggle joint by the torsion spring 3 on pivoting in the direction of Arrow D is loaded, the clamping lever 23 is thereby in the direction of Arrow E charged. As a result, the adjustable jaw 25 arrives in the Closed position or it is held in this. The necessary for this Closing force is applied by the torsion spring 3.

As soon as the coupling device runs into a station of the cable car system, the rollers 12 and 13 rolling along rails 12a and 13a, runs the control roller 24 on the control rail 24a, whereby the Clamping lever 23 against the action of the torsion spring 3 against the Direction of arrow E to open position of the adjustable jaw 25 is pivoted there. By pivoting the clamping lever 23 this reaches the open position beyond the dead center position Clamping jaw 25 in which it is held by the torsion spring 3. The Control roller 24 runs along a control rail 24b.

In Fig. 1a is also one of the acceleration located in the stations or delay wheels 6 shown, which with a Clamp body 1 further provided friction plate 9 cooperate. As a result, the speed of the uncoupled from the rope 5 in the stations Vehicle resources are reduced, which causes this from the passengers the speed can be left or climbed the driving resources increased so much that they are back on the rope 5 can be coupled.

From Fig. 2 it can be seen that the clamping lever 23 and the adjustable Clamping jaw 25 are fork-shaped, the in the direction of Conveyor or pull rope 5 measured length of the adjustable jaw 25 has at least about five times the diameter of the rope 5.

As can be seen from FIG. 3, the adjustable clamping jaw 25 on the one hand a clamping surface 26, which is oriented parallel to the rope 5 Clamping body 1 abuts the rope 5 over its entire length. Furthermore, the adjustable jaw 25 is laterally outside the fixed Clamping jaw 15 formed with two extensions 27, through which on the the clamping surface 26 with respect to the rope 5 opposite side two Stop surfaces 28 are formed. The adjustable jaw 25 is accordingly formed with two approximately semicircular recesses, whose diameter is slightly larger than the diameter of the rope 5 and which extend over an angle of approximately 200 °. The light one The width of these recesses is approximately 20% larger than the diameter of the Rope 5.

Below is the function of the adjustable with reference to FIGS. 4 and 5 Clamp 25 explains:

Soferne e.g. due to strong winds, the rope 5 coupled driving equipment in the direction of arrow G by a cross to the rope 5 aligned axis is rotated relative to the rope 5 takes hereby the clamping body 1 an angular position relative to the rope 5. As a result, the rope 5, which at the one of the two ends of the fixed jaw 15 located area 16a of the clamping surface 16, on the end of the adjustable jaw that is remote from this end 25 exerted a force F1 in area 26a of its clamping surface 26, which is opposite to the closing force of the spring accumulator 3, whereby the adjustable jaw 25 against the direction of arrow E. is moved to their open position. If the dead center position of the Clamping lever 23 would be exceeded, the adjustable Clamp 25 get into their open position, in which they through the Spring accumulator 3 would be kept.

To be able to exclude this adjustment movement, the adjustable one Clamping jaw 25 opposite the clamping surface 26 with respect to the cable 5 lying side formed with two extensions 27, through which the opposite side of the clamping surface 26 of the rope 5 stop surfaces 28 are formed. These stop surfaces 28 are then when the clamping body 2 and the rope 5 are aligned parallel to each other are from the rope 5 at a distance. However, if the clamp body 2 an axis aligned transversely to the rope 5 is rotated, as a result of which the adjustable Clamping jaw 25 is adjusted, which comes at the other end the jaw 25 located abutment surface 28 to the rope 5 to Issue. Here, on the one hand, the rope 5 over the area 26a Clamping surface 26 exerts a force F1 on the adjustable clamping jaw 25, which in the direction of the open position of the adjustable clamping jaw 25 acts. On the other hand, the rope 5 over the diagonally opposite Stop surface 28 the same on the adjustable jaw 25 large force F2 exerted in the opposite direction, by which a further adjustment of the jaw 25 is prevented.

This ensures that the adjustable jaw 25 also at unfavorable operating conditions of the cable car system therefore always in its closed position is held because by the rope 5 to the adjustable Clamping jaw 25 applied and acting in opposite directions Forces the dead center position of the clamping lever 23 can never be reached can.

6 to 9c are the possible positions which the clamping device take in their closed position opposite the conveyor and pull rope 5 can, illustrated:

6, 6a and 6b show the position in which the clamping device is aligned parallel to the rope 5. The entire clamping surface 26 of the adjustable jaw 25 and the entire clamping surface 16 of the fixed jaw 15 lie tight against the rope 5. In contrast, the stop faces 28 of the extensions 27 of the adjustable clamping jaw 25 are at a distance from the cable 5.
7, 7a, 7b and 7c, a first rotational position of the jaws 15 and 25 relative to the rope 5 is shown. The rope 5 is only in an area 26a on the clamping surface 26 on the adjustable jaw 25 and the rope 5 on the other end of the clamping device is only in an area 16a on the clamping surface 16 of the fixed jaw 15, the adjacent one being Stop surface 28 is very close to the rope 5.

8, 8a, 8b and 8c show the position which occurs when the clamp body is rotated further relative to the cable 5. The rope 5 comes to rest on one of the two stop surfaces 28, thereby preventing further pivoting of the clamping lever 23.
9, 9a, 9b and 9c furthermore show that when the clamping body 1 is rotated further, this rotation is transmitted to the conveyor or traction cable 5.
An alternative embodiment of a coupling device according to the invention is shown with reference to FIGS. 10, 10a, 10b and 10c. In this case, the clamping jaw 15a rigidly attached to the clamping body, which is designed like a fork, is formed on the opposite side with respect to the conveying or supporting rope 5 with two extensions 17, the inner surfaces of which act as stop faces 18 for the rope 5. In contrast, the adjustable second jaw 25a is located between the two extensions 17 of the rigidly attached jaw 15a. The rigidly attached jaw 15a is designed in the same manner as has been explained with reference to FIG. 3 with regard to the adjustable jaw.

As can be seen from Fig. 10, the rope 5 is then as long the driving equipment and thus the clamping body relative to the rope 5 are not twisted, at a distance from the stop surfaces 18 of the rigidly attached Clamping jaw 15a. However, as soon as the sprag by one Rope 5 is rotated transversely aligned axis relative to the rope 5 is the adjustable jaw 25a so long towards its open position adjusted until the rope 5 is in contact with one of the stop surfaces 18 comes, whereby the jaw 25a are no longer adjusted can. As a result, an adjustment of the jaw 25a in their Open positions are also excluded with certainty.

This creates a coupling device through which it is ensured that the pivoting of the clamping lever from the Closed position of the adjustable jaw only through the Control roller rolling along control rails is effected, whereby at any Operating conditions the required functional reliability of the Coupling device is guaranteed.

Instead of a torsion spring, another spring construction can also be used as the spring accumulator be provided.

REFERENCE NUMBER LIST

1

clamping bodies

2

clamper

3

torsion spring

5

Conveyor or pull rope

6

Deceleration acceleration wheels

9

friction plate

11

pole

12, 13

castors

12a, 13a

rails

15, 15a

Jaws, rigid

16

clamping surface

16a

Area of the clamping surface

17

Extensions of 15a

18

15a

21, 22

Lever of the toggle joint

21a, 22a

Bearing of the toggle joint

23

clamping lever

23a

Bearing of the clamping lever

24

control roller

24a, 24b

control rails

25, 25a

Clamping jaws, adjustable

26

clamping surface

26a

Area of the clamping surface

27

Extensions of 25

28

Stop surfaces of 25

Claims (9)

1. A device for coupling travelling stock, e.g. a car or a chair, to the hauling or traction cable of an aerial cableway installation, consisting of a clamping member (1) provided with rollers (12, 13), which clamping member (1) comprises a first clamping jaw (15) attached rigidly to the clamping member and a second clamping jaw (25) adjustable relative to the first clamping jaw, the second clamping jaw (25) being located on a clamping lever (23), on which there is additionally provided a control element, especially a control roller (24), interacting with control rails (24a, 24b), by means of which control element the clamping lever (23) may be adjusted with respect to the clamping member (1) against the action of at least one spring energy store, e.g. a torsion spring (3), whereupon the clamping lever (23) is held by means of the spring energy store in one of two top dead centre positions, characterised in that at least one of the two clamping jaws (15, 25) comprises at least one stop face (28) lying opposite its clamping face (16, 26) with regard to the cable (5), against which stop face (28) the cable (5) comes to lie in the event of twisting of the clamping member about an axis oriented perpendicularly to the cable (5) (Fig. 4).
2. A device according to claim 1, characterised in that the adjustable clamping jaw (25) comprises a stop face (28) lying opposite the clamping face (26) with regard to the cable (5) (Fig. 3).
3. A device according to one of claims 1 and 2, characterised in that the adjustable clamping jaw (25) comprises at least one extension (27) each side of the fixed clamping jaw (15) when viewed in the longitudinal direction of the clamping jaws (15, 25) (Fig. 4).
4. A device according to claim 1, characterised in that the rigidly attached clamping jaw (15a) comprises a stop face (18) lying opposite the clamping face with regard to the cable (5) (Fig. 10).
5. A device according to one of claims 1 and 4, characterised in that the rigidly attached clamping jaw (15a) comprises at least one extension (17) each side of the adjustable clamping jaw (25a) when viewed in the longitudinal direction of the clamping jaws (15a, 25a), by means of each of which extensions (17) a stop face (18) is formed for the cable (5) (Fig. 10).
6. A device according to one of claims 1 to 5, characterised in that one of the clamping jaws (15, 25; 15a, 25a) comprises at least one approximately semicircular recess for accommodating the cable (5), the diameter of which recess is somewhat larger than the diameter of the cable (5) and which extends over more than 180°, the clamping face (26) and the at least one stop face (28; 18) being formed by the inner surfaces of this recess.
7. A device according to claim 6, characterised in that the recess extends over an angle of approximately 200°.
8. A device according to one of claims 6 and 7, characterised in that the internal width of the recess is approximately 20% larger than the diameter of the cable (5).
9. A device according to one of claims 1 to 3, characterised in that the sum of the stop faces (28) of one of the clamping jaws (25) and the clamping face (16) of the other clamping jaw (15) is equal to the length of the clamping face (26) of the one clamping jaw (25) (Fig. 6).

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