WO2009003815A1

WO2009003815A1 - Elevator system and combination of terminating apparatus and traction element

Info

Publication number: WO2009003815A1
Application number: PCT/EP2008/057353
Authority: WO
Inventors: Hubert Göser
Original assignee: Contitech Antriebssysteme Gmbh
Priority date: 2007-07-04
Filing date: 2008-06-12
Publication date: 2009-01-08
Also published as: DE102007031092A1

Abstract

The invention relates to an elevator system having a car, a counterweight, a relatively flat traction element (1) comprising a plurality of individual load-bearing cables, which are each surrounded by an elastomeric casing layer and are connected to one another by an elastomeric backing layer on one side, for suspending and moving the car and the counterweight and a terminating apparatus (2) for fastening one end (3) of the traction element (1), wherein the terminating apparatus (2) has at least two faces (4, 5, 6, 7), between which the traction element (1) is clamped. According to the invention, the traction element (1) is a composite cable with a flat elastomeric backing layer (8), which has, on a broad side (9), a plurality of cables (11), which are arranged next to one another, run in the longitudinal direction of the traction element, are each surrounded by an elastomer (10) and are spaced apart from one another. According to the invention, that face (4, 6) of the terminating apparatus (2) which faces said broad side (9) of the backing layer (8) furthermore has a plurality of depressions (12), which are arranged next to one another, run in the longitudinal direction of the traction element, are spaced apart from one another and are designed in such a way that they partially accommodate in each case one cable (11) during clamping of the traction element (1).

Description

ContiTech Drive Systems GmbH

description

Elevator system and combination of closure device and tension element

The invention relates to an elevator system according to the preamble of claim 1 and a combination of termination device and tension element, in particular for elevator systems.

An elevator system according to the preamble of claim 1 is known for example from DE 699 33 107 T2.

In elevator systems usually driven by a round rope as a tension member, clamping devices are used as termination devices to secure the ends of the rope. These can be, for example, wedge-type clamping devices, compressed chewing or cable locks. The rope is usually a steel cord which has a high compressive strength, so that a high clamping force has no damaging effects on the rope, such as squeezing or creeping.

Since conventional round steel cables have disadvantages in terms of flexibility and longevity when used in elevator systems, coated tension members comprising a relatively flat tension member have been developed. The flat tensile member has a plurality of individual load-bearing strands encased within a common sheath layer. The cladding layer surrounds and / or separates the individual strands. As a result of the configuration of the tension element, the rope pressure can be distributed more uniformly over the tension element. These flat tension elements are usually flat belts. In elevator systems driven by a flat belt as tension element, clamping devices are also used as Closing devices used to attach the ends of the flat belt. These may be, for example, wedge clamping devices or clamping devices in the form of two interconnectable plates. A disadvantage of the use of flat belts is that they have only a low compressive strength, so that a high clamping force can have damaging effects on the tension element, for example a squeezing or a creep, in particular of the cables. Since the contact pressure is usually the same over the entire Zugelementbreite, the flat belt can be adversely pushed wide. As a result, the outer ropes embedded in the flat belt are disadvantageously more heavily loaded than the inner ones, and the distribution of the pressure over the tension element is no longer uniform. Such a disadvantageous end fastening is described, for example, in WO 01/53186 A1.

On the basis of this prior art, the object of the invention is to make an elevator system according to the preamble of claim 1 and a combination of termination device and tension element, in particular for an elevator system, safer.

This object is achieved in an elevator system according to the preamble of claim 1 by the characterizing features of claim 1 and a combination of terminating device and tension element by the features of claim 10. Further developments and advantageous embodiments of the invention will become apparent from the respective dependent claims.

The elevator system according to the invention comprises a car, a counterweight, a relatively flat tension member of a plurality of individual load-bearing ropes, each surrounded by an elastomeric sheath layer and interconnected by a unilateral elastomeric backsheet, for suspending and moving the cab and the Counterweight and a terminating device for securing one end of the tension member, wherein the terminating device has at least two surfaces, between which see the tension element is clamped. According to the invention, it is provided that the tension element is a composite rope with a flat elastomeric backing which has a plurality of side by side arranged in Zugelementlängsrichtung, each sheathed with an elastomer and spaced apart ropes.

According to the invention it is further provided that the surface of the terminal device, which faces said one broad side of the backsheet, a plurality of juxtaposed, extending in Zugelementlängsrichtung and spaced-apart recesses, which are designed such that they each a cable when clamping the tension element partially record.

By erfmdungsgemäße embodiment of the tension element and the termination device, the elevator system is made even safer. It has been shown that slipping of the tension element is reliably prevented when clamping the tension element according to the invention in the termination device according to the invention. The fact that the cables of the tension member are partially absorbed by the recesses of the Abschlussvorrichtungsfläche, it is prevented that the cables move laterally or move under the applied clamping pressure. This leads to a more uniform stress distribution. Due to the inventive design of the tension element and the termination device of the contact pressure is concentrated on the tension members.

In the case of a sufficiently high contact pressure caused by the clamping, the tension element according to the invention is securely fixed in the closure device according to the invention, without the risk of lateral tilting or so-called wide squeezing of the tension element.

Furthermore, it has been found that existing elastomer, which surrounds the individual ropes when clamping due to the inventive design of the tension element and the termination device, can be pressed deep into the ropes. As a result, the pull-out force of the tension element from the termination device is further increased. The elastomer is preferably polyurethane use. Preferably, the individual ropes are round ropes. Preferably, the individual ropes are composed of round strands.

A development of the invention provides that each recess in its cross-sectional contour substantially corresponds to the cross-sectional contour of each sheathed cable, wherein the cross-sectional contour is preferably U-shaped.

Furthermore, it is provided that the depth a of the recess is smaller than the height b of the cable track.

Too small a depth could cause the tension member to be crushed and lose the bonds between the ropes and the elastomer. This would greatly decrease the pull-out force of the tension member from the termination device.

Preferably, the depth a = (0.98 to 0.5) x b, more preferably the depth a = (0.95 to 0.8) x b.

An advantageous embodiment of the invention provides that the termination device has a base with at least one jaw surface and a wedge with at least one

Clamping surface, wherein the wedge is arranged in the base, the at least one clamping surface is adjacent to the jaw surface and the tension member between the clamping surface and the jaw surface is arranged, wherein preferably the clamping surface has the recesses.

Such termination devices are known to those skilled in the art with the exception of the invention arranged in the clamping surface depressions.

According to one embodiment of the invention, the termination device comprises three plate-shaped elements, namely a central plate-shaped element around which the end of the

Tension element is herumgelegt, and two outer plate-like elements, which are connectable to the central plate-like element such that the end of the tension element between the plate-shaped elements is clamped, wherein preferably the central plate-shaped element has the recessed surfaces.

Such terminating devices are known to the person skilled in the art with the exception of recesses which are arranged in the surface according to the invention.

Preferably, the surfaces have a roughness of 5 to 50 microns, more preferably from 10 to 20 microns. Such a roughness has been found to adjust the friction coefficient of the surfaces such that the pull-out force of the tension element from the termination device is further increased.

It is further provided that the terminal device has a slip-through protection. As a result, the security of the elevator system is further increased, in particular if, according to an embodiment of the invention, the slip-resistance is connected to an electronic monitoring system. This monitoring system can, for example, trigger an alarm in the event of a malfunction and thus increase the quality of the extension system.

The invention also relates to a combination of terminating device and traction element which is particularly adapted to be connected to an elevator system.

The aforementioned advantages apply correspondingly in the following developments and advantageous embodiments.

According to the invention, the tension element is a composite rope with a flat elastomeric backsheet, which has a plurality of side by side, arranged in Zugelementlängsrichtung, each sheathed with an elastomer and spaced from each other ropes. According to the invention, the termination device has at least one clamping surface facing the aforementioned one broad side of the backsheet and having a plurality of recesses arranged side by side in traction element longitudinal direction and spaced apart, which are designed such that they each partially enclose a rope during clamping of the traction element take up. A development of the invention provides that each recess in its cross-sectional contour substantially corresponds to the cross-sectional contour of each sheathed cable, wherein the cross-sectional contour is preferably U-shaped.

Furthermore, it is provided that the depth a of the recess is smaller than the height b of the cable track. Preferably, the depth a = (0.98 to 0.5) x b, more preferably the depth a = (0.95 to 0.8) x b.

According to a development of the invention, the terminating device comprises three plate-shaped elements, namely a middle plate-shaped element around which the end of the tension element is wrapped, and two outer plate-shaped elements which are connectable to the central plate-shaped element such that the end of the tension element is clamped between the plate-shaped elements, wherein preferably the central plate-shaped element has the recessed surfaces.

Preferably, the surfaces have a roughness of 5 to 50 microns, more preferably from 10 to 20 microns.

It is further provided that the terminal device has a slip-through protection. Preferably, the anti-slip device is connected to an electronic monitoring system.

The invention will be explained with reference to some exemplary embodiments, which are illustrated in the drawing. In this show: 1 is a schematic representation of a combination of termination device according to the invention in the form of a wedge clamp and tension element in the form of a composite rope,

2 shows a schematic cross-sectional view of the combination shown in FIG. 1 or 4 along the section A-A,

Fig. 3 is a schematic partial view of the cross section shown in FIG. 2 and

Fig. 4 is a schematic representation of an inventive combination of termination device in the form of a Plattenklemmung and tension element in the form of a composite rope.

In Fig. 1, a combination according to the invention of closure device 2 in the form of a wedge clamp and tension element 1 in the form of a composite rope is shown purely schematically. This combination can be connected to an elevator system not shown here.

The termination device 2 has a base 13 with two jaw surfaces 5, 7 and a wedge 14 with two clamping surfaces 4, 6. The wedge 14 is disposed in the base 13. Each clamping surface 4, 6 is adjacent to a jaw surface 5, 7. The tension member 1 is disposed between the respective clamping surface 4, 6 and the jaw surface 5, 7, wherein the clamping surfaces 4, 6, the recesses 12 according to the invention, which clearly in Figs. 2 and 3 can be seen.

Furthermore, the termination device 2 still has a slip-through protection 18, which is preferably connected to an electronic monitoring system 19, so that an alarm is triggered in good time if a malfunction should occur.

Fig. 2 shows a schematic cross-sectional view of the combination shown in Figs. 1 or 4 along the section AA. Fig. 3 shows a schematic partial view of the in Fig. 2 illustrated cross section in magnification. Hereinafter, Fig. 2 and Fig. 3 will be described in one go, wherein like reference numerals denote like components in the figures.

The tension member 1 is a composite rope with a flat elastomeric backing layer 8, which has a plurality of side by side arranged in Zugelementlängsrichtung, each sheathed with an elastomer 10 and spaced apart ropes 11 on a broad side 9. The connection between the elastomeric sheath 10 and the elastomeric backing 8 is preferably cohesively. The material of the sheath 10 may be the same or different than the elastomeric material of the backsheet 8.

The termination device comprises at least one clamping surface 4, 6, which faces said one broad side 9 of the backsheet 8 and a plurality of juxtaposed, extending in Zugelementlängsrichtung and spaced-apart recesses 12 has.

These recesses 12 are formed so that they each receive a cable 11 during clamping of the tension element 1 partially.

In particular, in Fig. 3 it can be seen clearly that each recess 12 in its cross-sectional contour substantially corresponds to the cross-sectional contour of each sheathed cable 11 + 10, wherein the cross-sectional contour in the present case is U-shaped.

As shown in FIG. 3, the depth a of the recess 12 is smaller than the height b of the cable lane 11 + 10.

The depth a is preferably 0.98-b to 0.5-b, particularly preferably 0.95-b to 0.8-b.

Finally, FIG. 4 shows a schematic representation of a combination of closure device according to the invention in the form of a plate clamping and tension element in the form of a composite cable. The end device 2 comprises three plate-shaped elements 15, 16, 17 and a support rod 20. The end 3 of the tension element 1 is wrapped around a central plate-shaped element 15, wherein below the central plate-shaped element 15 also the support rod 20 from the end 3 of the tension element 1 is wrapped. Two outer plate-shaped elements 16, 17 are now connected to the central plate-shaped element 15 such that the end 3 of the tension element 1 is clamped between the plate-shaped elements 15, 16, 17, the middle plate-shaped element 15 having the depressions 12 Has surfaces 4, 6.

Here, too, the termination device 2 has a slip-through protection 18, which is connected to an electronic monitoring system 19.

LIST OF REFERENCE NUMBERS

(is part of the description)

1 tension element

2 termination device

3 end

4 area

5 area

6 area

7 area

8 elastomeric backsheet

9 broadside

10 elastomeric sheath

11 rope

12 deepening

13 base

14 wedge

15 middle plate-shaped element

16 outer plate-shaped element

17 outer plate-shaped element

18 Slip protection

19 monitoring system

20 handrail

Claims

claims

An elevator system comprising a car, a counterweight, a relatively flat tension member (1) of a plurality of individual load-bearing ropes, each surrounded by an elastomeric cover layer and interconnected by a single-sided elastomeric backsheet, for suspending and moving the car and the counterweight, and a termination device (2) for fixing one end (3) of the tension member (1), the termination device (2) having at least two surfaces (4, 5, 6, 7) between which the tension member (1) is clamped characterized in that the tension member (1) is a composite rope with a flat elastomeric backing layer (8) on a broad side (9) a plurality of juxtaposed arranged in Zugelementlängsrichtung, each with an elastomer (10) sheathed and spaced apart ropes (11), and in that that surface (4, 6) of the termination device (2), that of said one broad side (9) of the back 8), a plurality of adjacently arranged depressions (12) extending in tension element longitudinal direction and spaced from each other, which are designed such that they each partially receive a sheathed cable (11) during clamping of the tension element (1).

2. Elevator system according to claim 1, characterized in that each recess (12) corresponds in its cross-sectional contour substantially the cross-sectional contour of each sheathed cable (11 + 10), wherein the cross-sectional contour is preferably U-shaped.

3. Elevator system according to claim 1 or 2, characterized in that the depth a of the recess (12) is smaller than the height b of the cable track (11 + 10).

Elevator system according to claim 3, characterized in that the depth a is (0.98 to 0.5) x b, preferably (0.95 to 0.8) x b.

5. Elevator system according to one of claims 1 to 4, characterized in that the termination device (2) has a base (13) with at least one jaw surface (5, 7) and a wedge (14) with at least one clamping surface (4, 6) in which the wedge (14) is arranged in the base (13) which has at least one clamping surface (4, 6) in addition to the at least one at least one jaw surface (5, 7) and the tension element (1) between the clamping surface (4, 6) and the jaw surface (5, 7) is arranged, wherein preferably the clamping surface (4, 6) has the recesses (12).

Elevator system according to one of claims 1 to 4, characterized in that the closure device (2) comprises three plate-shaped elements (15, 16, 17), namely a central plate-shaped element (15) around which the end (3) of the tension element (1) and two outer plate-shaped elements (16, 17) which are connectable to the middle plate-shaped element (15) in such a way that the end (3) of the tension element (1) lies between the plate-shaped elements (15, 15). 16, 17) is clamped, wherein preferably the central plate-shaped element (15) has at least one surface (4, 6) which is provided with the recesses (12).

7. Elevator system according to one of claims 1 to 6, characterized in that the surfaces (4, 5, 6, 7) have a roughness of 5 to 50 microns, preferably from 10 to 20 microns.

8. Elevator system according to one of claims 1 to 7, characterized in that the closure device (2) has a slip-through protection (18).

9. Elevator system according to claim 8, characterized in that the anti-slip device (18) is connected to an electronic monitoring system (19).

Combination of closure device (2) and tension element (1) adapted in particular to be connected to an elevator system, characterized in that the tension element (1) is a composite rope with a flat elastomeric backing layer (8) attached to a broad side (9) has a plurality of juxtaposed, extending in Zugelementlängsrichtung, each with an elastomer (10) sheathed and spaced apart cables (11), and that the terminating device (2) at least one clamping surface (4, 6), the said a broad side (9) of the back layer (8) facing and a plurality of juxtaposed, extending in Zugelementlängsrichtung and spaced-apart recesses (12), the thus formed ausgebil- det are that when clamping the tension element (1) each partially accommodate a sheathed cable (11).

11. A combination according to claim 10, characterized in that each recess (12) corresponds in its cross-sectional contour substantially the cross-sectional contour of each sheathed cable (11 + 10), wherein the cross-sectional contour is preferably U-shaped.

12. A combination according to claim 10 or 11, characterized in that the depth a of the recess (12) is smaller than the height b of the cable track (11 + 10).

13. A combination according to claim 12, characterized in that the depth a (0.98 to 0.5) x b, preferably (0.95 to 0.8) x b.

14. Combination according to one of claims 10 to 13, characterized in that the termination device (2) has a base (13) with at least one jaw surface (5, 7) and a wedge (14) with at least one clamping surface (4, 6) in which the wedge (14) is arranged in the base (13), which lies at least one clamping surface (4, 6) next to the at least one jaw surface (5, 7) and the tension element (1) between the clamping surface (4, 6). and the jaw surface (5, 7), wherein preferably the clamping surface (4, 6) has the recesses (12).

15. A combination according to any one of claims 10 to 13, characterized in that the closure device (2) comprises three plate-shaped elements (15, 16, 17), namely a middle plate-shaped element (15) around which the end (3) of the tension element (1) and two outer plate-shaped elements (16, 17) which are connectable to the middle plate-shaped element (15) in such a way that the end (3) of the tension element (1) lies between the plate-shaped elements (16). 15, 16, 17) is clamped, wherein preferably the central plate-shaped element (15) has at least one surface (4, 6) which is provided with the recesses (12).

16. Combination according to one of claims 10 to 15, characterized in that the surfaces (4, 5, 6, 7) have a roughness of 5 to 50 microns, preferably from 10 to 20 microns.

17. Combination according to one of claims 10 to 16, characterized in that closure device (2) has a slip-through protection (18).

18. Combination according to claim 17, characterized in that the anti-slip device (18) is connected to an electronic monitoring system (19).