EP2909124A1

EP2909124A1 - Supporting means for an elevator system

Info

Publication number: EP2909124A1
Application number: EP13783020.4A
Authority: EP
Inventors: Florian Dold
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2012-10-22
Filing date: 2013-10-21
Publication date: 2015-08-26
Anticipated expiration: 2033-10-21
Also published as: WO2014064021A1; US9981830B2; CN104755404A; KR101748503B1; CA2884913A1; US20150298941A1; KR20150058426A; EP2909124B1; CN104755404B; CA2884913C

Abstract

The invention relates to a method for preparing a supporting means for an application in an elevator system, wherein the supporting means comprises a plurality of tension-bearing elements arranged parallel to each other and a jacket, and wherein the tension-bearing elements are substantially surrounded by the jacket, comprising the following steps: pre-finishing a first supporting means end in such a way that the tension-bearing elements can be directly electrically contacted by a contacting device at the pre-finished point, wherein the pre-finishing occurs before the supporting means is transported to the elevator system.

Description

Supporting means for an elevator installation

The invention relates to a method for preparing a suspension for an application in an elevator installation.

In some conveyors such as elevator systems, cranes or hoists, belt-shaped suspension means are used. These support means generally comprise a plurality of beam wires consisting of tensile carriers which absorb the tensile forces to be absorbed by the suspension element. The tension members are generally surrounded by a plastic sheath. The jacket protects the tension members, for example against mechanical wear, since the support means often over

Be guided deflection. In addition, the jacket improves the traction of the suspension element on deflection or drive rollers and fixes the arrangement of the tension members with each other.

Such suspension means are within a conveyor a safety-relevant component. Their failure or breakage can lead to considerable property damage or personal injury. For this reason, test units are used in conveyors, which in particular check the mechanical condition of the tension members. Damage to the forces absorbing tension members should be able to be detected early, so that the support means can be replaced in case of damage to prevent failure of the conveyor.

The electrically conductive, metallic tension members are surrounded by the electrically insulating jacket made of plastic. In order to carry out a test of the state of the tension members, contacting of a contact element with the tension member is required in some methods. In a known method is using the

Contact element passed through the tension members an electric current, which serves as a test current to determine the state of the tension members.

DE 3 934 654 A1 shows a generic type of suspension. The ends of the tension members are connected in pairs conductive with a bridge part, so that the tension members of the support means are electrically connected in series. The tension members of the suspension element are connected via an ammeter to a voltage source, so that by means of Test current, which is passed through all train carrier due to the electrical circuit in series, the state of the tension members can be assessed.

WO 2005/094249 A2 shows a system for contacting a suspension element, in which the contact elements pierce the jacket of the suspension element perpendicular to a longitudinal axis of the tension members and then penetrate into the tension members. Disadvantageously, the contact elements can miss the tension members due to the required piercing process through the jacket. In addition, a contact resistance between the tension members and the contact elements penetrated therein may change over time, which adversely affects the validity of a monitoring method.

WO2010 / 057797A1 and WO2011 / 003791A1 show systems for contacting a suspension element, in which contact elements are brought to exposed tensile carriers of the suspension element, for example by resilient contacts or by contact points penetrating into the tensile carriers. A disadvantage of such contacting systems is that the connection between contact elements and tension members is unstable and that there is a high contact resistance between the contact element and the tension members.

An object of the present invention is to provide a method for preparing a suspension for an application in an elevator installation, wherein the tension members of the suspension element should be reliably electrically contacted.

To solve this problem, a method for preparing a suspension for an application in an elevator system is first proposed. In this case, the support means comprises a plurality of mutually parallel tension members and a jacket, wherein the tension members are substantially enveloped by the jacket. The method comprises the steps of prefabricating a first end of the support means, wherein contact elements are arranged on the tension members at a prefabricated point, so that the tension members at the prefabricated position are separated by a

Contacting device are electrically contacted directly, the

Pre-assembly takes place before a transport of the suspension element to the elevator installation.

Such a method for preparing a suspension for an application in a Elevator system has the advantage that the so pre-assembled suspension means can be connected to a monitoring device in a simple, reliable, and cost-effective manner when installed in an elevator installation. Thus, when installing the support means in the elevator system no special tools and no difficult to control workflows are needed. As a result, an installation time of an elevator installation can be reduced, and at the same time a quality of the electrical contacting of the tension members is improved because no error-prone work steps occur. In addition, the training of assembly personnel can be simplified, since no complicated steps are incurred.

The prefastening of the suspension element can basically be done in various ways. According to a first exemplary embodiment, during pre-assembly, the tension members at the prefabricated points are at least partially exposed by the jacket. Such prefabricated suspension means have the advantage that the at least partially exposed tensile carriers can be electrically contacted in a simple manner, for example by contact terminals.

When prefabricating the suspension element contact elements are arranged on the tension members at the prefabricated point. Such contact elements have the advantage that they reliably contact the tension members electrically and, in turn, can be electrically contacted directly and reliably in a simple manner by a contacting device. In an advantageous development of these

Contact elements soldered to the tension members, welded, glued or pressed. In a further advantageous embodiment, these contact elements protrude so far from the support means that they are directly electrically contacted by a contacting device in a simple manner.

Such contact elements can be arranged in a first embodiment of at least partially exposed by the jacket tension members, ie after an extrusion of the shell on the tension members. In an alternative embodiment, the contact elements are arranged on the tension members before they are enveloped by a jacket. The contact elements are advantageously designed such that they protrude from the jacket after the jacket has been extruded around the tension members. In this way, the tension members at the prefabricated point are directly electrically contactable.

In an advantageous embodiment, the prefabricated point is dimensioned such that it can be guided by a suspension means fastening device. Such prefabricated points have the advantage that a suitably prepared support means can be mounted in an elevator installation in an installation of the suspension element in an elevator installation such as a conventional support means. Thus, no specially designed suspension means fastening devices are necessary, which are designed for suspension means with larger sized prefabricated bodies.

If covers are provided on deflection and / or drive rollers, the prefabricated point is likewise advantageously dimensioned such that it can be guided under such covers.

In an advantageous embodiment, the method for preparing a suspension element for an application in an elevator installation comprises the additional step:

Attaching a protective element to the prefabricated site.

Such a protective element offers the advantage that the prefabricated point is protected against mechanical loads during transport and / or storage and / or installation of the suspension element. For example, contact elements attached to the tension members can be protected from mechanical influences by a plastic element.

In an advantageous development, such a protective element can be attached or removed in a simple manner to the prefabricated point of the suspension element. In an alternative development, such a protective element is permanently attached to the prefabricated point, so that the protective element even in a

Use of the suspension in an elevator system remains on the support means. In this case, the protective element may have recesses which allow a simple contacting of the tension members by a contacting device.

In a first advantageous embodiment, only one end of the support means of the suspension element is prefabricated. To monitor a one-sided prefabricated To ensure suspension means, the tension members are electrically connected to each other on a non-prefabricated side of the support means with an installation of the suspension element in an elevator system. This can be achieved, for example, by a knife-shaped contact element, or by screw-like connecting elements, which each electrically connect two adjacent tension members. The advantage of such a method is that only one-sided prefabricated suspension means can be cut to length in an installation of the support means.

In a second exemplary embodiment, both support means ends of the suspension element are prefabricated in such a way that the tension members can be electrically contacted directly at the prefabricated points by a contacting device, wherein the prefastening takes place before a transport of the suspension element to the elevator installation. Such a method for preparing a suspension for a

Application in an elevator installation has the advantage that, when the suspension element is installed in an elevator installation, it does not involve any elaborate and error-prone operation

Work steps must be made. Such a pre-assembled on both sides suspension means is advantageously before a transport of the support means for

Elevator system cut to length. Therefore, the cutting can be done in the pre-assembly, so that the support means can be cut clean. When the suspension element is cut to length in the elevator installation, it is not possible to use heavy and expensive cutting means, which may not allow for clean cuts. A disadvantage of such on both sides pre-assembled suspension means, however, that a certain margin for the length of the suspension means must be included, which ultimately results in an excess length of the suspension element in the elevator system. In contrast, there are the advantages of improved electrical contact and improved cuts.

In an advantageous development, a distance between the prefabricated locations is greater than a required carrier length in the elevator installation between a first and a second suspension means fastening device. This has the advantage that a length of the two-sided prefabricated suspension means is sufficient even for slightly occurring inaccuracies. In an advantageous development, the distance between the prefabricated points is 50 to 1000 cm, preferably 100 to 500 cm, more preferably 150 to 300 cm larger than the required

Carrier length in the elevator system between the first and the second Support means fastening device.

In an advantageous embodiment, the method comprises the further steps: installing the suspension element in the elevator installation, wherein the suspension element

Supporting means fixing means is attached and wherein the prefabricated location is electrically connected to a Kontaktierungsvomchtung, and wherein the Kontaktierungsvomchtung is connected to a monitoring unit; and

Monitoring the suspension by means of determined electrical characteristics of the tension members.

In an advantageous embodiment, when installing the suspension element in the elevator installation, at least two tension members are electrically connected to each other at a second end of the suspension element. This has the advantage that the suspension means in

Installing can be cut to length, so that no excess length arises. On the other hand, it is disadvantageous that at least two tension members each have to be electrically connected to one another at a non-prefabricated point of the suspension element, without being able to resort to prefabricated points. Since the tension members on the second end of the suspension element do not have to be contacted individually electrically, this disadvantage can be accepted because a mere electrical connection of two tension members is less complicated and less error-prone than a single electrical tapping of the tension members.

In an alternative advantageous embodiment, both the first end of the support means and a second end of the support means are prefabricated during prefabrication, such that the tension members at the prefabricated positions are preconfigured by a

Kontaktierungsvomchtung are electrically contacted directly, the

Pre-assembly takes place before a transport of the suspension element to the elevator installation. Such a method has the advantage that when the suspension element is installed in the elevator installation, only pre-assembled points must be electrically contacted, which simplifies electrical contacting of the tension members and improves the quality of the electrical contacts.

In an advantageous development, when installing the suspension element in the elevator installation, in each case at least two tension members of a second

Kontaktierungsvomchtung on the second support means end electrically connected to each other, and the tension members of a first contacting device on the first support end are individually electrically tapped. In this case, the pre-assembly at the first and at the second end of the support means may be similar, or the

Pre-assembly at the first and at the second end of the support means can be designed in various ways.

In an exemplary embodiment, when the suspension element is installed in the elevator installation, the suspension element is fastened to the suspension element fastening devices in such a way that an excess length of the suspension element essentially follows only one

Tragmittelbefestigungsvorrichtung is stored. This has the advantage that the

Overlength must be stowed only once in the elevator system. This reduces an expense in the installation of the suspension element in the elevator system. In an advantageous development, the excess length of the suspension element is rolled up and fastened to a carrier.

In an exemplary embodiment, when installing the suspension element in the elevator installation, the prefabricated location is guided by the suspension element fastening device. Advantageously, the prefabricated point is dimensioned such that no special suspension means fastening devices must be used.

In an advantageous embodiment, the tension members comprise stranded steel wires. In an alternative embodiment, the tension members comprise stranded plastic fibers, such as aramid fibers, and electrically conductive elements, such as carbon fibers or metallic wires.

The terms "prefabricated" and "prefabricated point" mean that the suspension element is prepared with regard to electrical contacting of the tension members. A prefabricated site does not differ from one

prefabricated the support means in that a contacting device can be easily or directly connected to the tension members electrically. A pre-assembly can therefore include an attachment of additional elements, or even only a change of the jacket or the tension members.

Details and advantages of the invention are described below with reference to Embodiments and described with reference to schematic drawings. Show it:

Figure 1 shows an exemplary embodiment of an elevator system;

Figure 2 shows an exemplary embodiment of a prefabricated

Support means;

FIG. 3 shows an exemplary embodiment of a prefabricated one

Support means;

Figure 4 shows an exemplary embodiment of a prefabricated

Support means end;

Figure 5 shows an exemplary embodiment of a prefabricated

Tragmittelendes with a contacting device; and

FIG. 6 shows an exemplary embodiment of a prefabricated one

Tragmittelendes with excess length.

The elevator installation 40 illustrated schematically and by way of example in FIG. 1 includes an elevator cage 41, a counterweight 42 and a suspension element 1 and a traction sheave 43 with associated drive motor 44. The traction sheave 43 drives the suspension element 1 and thus moves the elevator cage 41 and the counterweight 42 counter to one another , The drive motor 44 is controlled by an elevator control 45. The cabin 41 is designed to accommodate people and / or goods and between floors of a

Transport building. Cabin 41 and counterweight 42 are guided along guides (not shown). In the example, the cabin 41 and the counterweight 42 are each suspended on support rollers 46. The suspension element 1 is at a first

Fixed suspension means fastening device 47, and then first performed to the support roller 46 of the counterweight 42. Then the support means 1 is placed over the traction sheave 43, guided around the support roller 46 of the car 41 and finally connected by a second suspension means fastening device 47 with a fixed point. This means that the support means 1 with a higher speed corresponding to a transfer factor via the drive 43, 44 runs as the car 41 and counterweight 42 move. In the example, the wrap factor is 2: 1.

A loose end 1.1 of the suspension element 1 is provided with a contacting device 2 for temporary or permanent contacting of the suspension element 1. In the example shown, such a contacting device 2 is arranged at both ends of the support means 1. In an alternative embodiment, not shown, only one contacting device 2 is arranged on one of the support means ends 1.1. The

Tragmittelenden 1.1 are no longer burdened by the tensile force in the suspension element 1, since this tensile force is already passed through the suspension means fastening devices 47 into the building.

The contacting devices 2 are thus arranged in a non-overrun area of the suspension element 1 and outside the loaded area of the suspension element 1.

The elevator installation 40 shown in FIG. 1 is exemplary. Other capping factors and arrangements, such as counterbalanced lift systems, are possible. The contacting device 2 for contacting the support means 1 is then arranged according to the placement of the support means fastening devices 47.

FIG. 2 shows a suspension element 1 with a prefabricated point 8 at a first end of the suspension element 1.1. According to a first embodiment, the suspension element is prefabricated only at one end, so that the suspension element can be cut to length when installed in an elevator installation. In this case, at least two tension members are electrically connected to each other at a non-pre-assembled second end of the support so that at least two tension members are switchable in series, wherein the tension members only have to be electrically contacted or tapped by a monitoring unit at the first end of the support means.

FIG. 3 shows a suspension means 1 prefabricated on both sides. Here, prefabricated points 8 are located at a first and a second end of the support 1.1. A distance 10 between the prefabricated locations 8 comprises a required carrier length 11 and an excess length 12. The required carrier length 11 is an expected carrier length between two suspension means fastening devices in the elevator installation, and the excess length 12 serves as a safety margin. It can the Overlength 12, for example, between 50 and 1000 cm, preferably between 100 and 500 cm, more preferably between 150 and 300 cm.

In the figure 4 is an exemplary embodiment of a prefabricated

Tragmittelendes 1.1 shown. The support means 1 comprises mutually parallel tension members 5 and a jacket 6, wherein the tension members 5 are substantially enveloped by the jacket 6. At the prefabricated point 8, the tension members 5 are at least partially exposed by the jacket 6, and in addition 5 contact elements 9 are arranged on the tension members. Such contact elements 9 allow a simple and secure electrical contacting of the tension members by a contacting device.

FIG. 5 shows an exemplary embodiment of a carrying means end 1.1 with a contacting device 2. Again, the support means 1 comprises mutually parallel tension members 5 and a jacket 6, wherein the tension members 5 are substantially enveloped by the jacket 6. The contacting device 2 is arranged on the prefabricated point (not visible). In this embodiment, the contacting device comprises a base and a lid, which facilitates attachment of the contacting device to the prefabricated location.

The contacting device 2 also includes a header, so that the

Contacting device 2 and thereby the tension members 5 in a simple manner can be electrically connected to a monitoring unit (not shown).

In FIG. 6, an exemplary embodiment of an invention is shown in FIG

Tragmittelbefestigungsvorrichtung 47 attached support means 1 shown with excess length. The carrying means end 1.1 in turn comprises a prefabricated point 8, and a contacting device 2 arranged at the prefabricated point 8. The excess length resulting from two-sided prefabricating and a planned margin is rolled up in this exemplary embodiment. The rolled-up excess length and / or the prefabricated point 8 can be fastened to a carrier (not shown) in the elevator installation.

Claims

claims

1. A method for preparing a suspension means (1) for use in one

Elevator installation (40), the suspension element (1) comprising a plurality of mutually parallel tension members (5) and a jacket (6), wherein the tension members (5) are substantially enveloped by the jacket (6), the method comprising the steps:

Pre-fabricating a first support means end (1.1), wherein at a prefabricated point (8) contact elements (9) on the tension members (5) are arranged so that the tension members (5) at the prefabricated point (8) by a contacting device (2) directly can be electrically contacted, wherein the prefastening takes place before a transport of the support means (1) to the elevator installation (40).

2. The method according to claim 1, wherein the pre-fabricating the tension members (5) at the prefabricated point (8) are at least partially exposed by the jacket (6).

3. The method according to any one of the preceding claims, wherein the

prefabricated point (8) is dimensioned such that it can be guided by a suspension means fastening device (47).

4. The method according to any one of the preceding claims, comprising the

additional step: attaching a protective element to the

prefabricated site (8).

5. The method according to any one of the preceding claims, wherein the first

Tragmittelende (1.1) and a second support means end (1.1) are pre-assembled.

6. The method according to claim 5, wherein a distance (10) between the

Prefabricated points (8) is greater than a required carrier length (11) in the elevator installation (40) between a first and a second Tragmitte lbefestigungsvorrichtung (47).

7. The method according to claim 6, wherein the distance (10) by 50 to 1000 cm, preferably by 100 to 500 cm, more preferably by 150 to 300 cm is greater than the required carrier length (11) in the elevator installation (40) between the first and second suspending means (47).

8. The method according to any one of the preceding claims, the method

comprising the further steps:

- Installing the support means (1) in the elevator installation (40), wherein the support means (1) is fixed to Tragmittelbefestigungsvorrichtungen (47) and wherein the tension members (5) at the prefabricated point (8) with a contacting device (2) are electrically connected , and wherein the contacting device (2) is connected to a monitoring unit; and

- Monitoring the suspension element (1) based on determined electrical

Characteristics of the tension members (5).

9. The method according to claim 8, wherein when installing the support means (1) in the

Elevator installation (40) at a second support means end (1.1) in each case at least two tension members (5) are electrically connected to each other.

10. The method according to claim 8, wherein the first support means end (1.1) and a second support means end (1.1) are prefabricated.

11. The method according to claim 10, wherein when installing the support means (1) in the elevator installation (40) at least two tension members (5) by a second contacting device (2) on the second support means end (1.1) are electrically connected to each other, and wherein the tension members (5) by a first contacting device (2) on the first support means end (1.1) individually electrically tapped.

12. The method according to any one of claims 8 to 11, wherein when installing the

Supporting means (1) in the elevator installation (40), the support means (1) is attached to the support means fastening devices (47) such that an excess length (12) of the suspension element (1) substantially behind only one

Tragmittelbefestigungsvorrichtung (47) is stored.

13. The method according to claim 12, wherein the excess length (12) of the support means (1) is rolled up and secured to a carrier.

14. The method according to any one of claims 8 to 13, wherein when installing the

Supporting means (1) in the elevator installation (40), the prefabricated point (8) by the support means fastening device (47) is guided.