Support for an elevator installation

Abstract

A method of providing a support for an elevator car in an elevator installation, wherein the support includes a plurality of tensile carriers arranged parallel to one another and substantially enclosed by a casing, includes pre-preparation of a first support end wherein the tensile carriers are directly electrically contactable at a pre-prepared location by a contacting device, and wherein the pre-preparation is carried out before transport of the support to the elevator installation.

Claims

1. A method of providing a support for use in an elevator installation, the support having a plurality of tensile carriers arranged parallel to one another and a casing, wherein the tensile carriers are substantially enclosed by the casing, the method comprising the steps of: pre-preparing a first support end of the support by arranging contact elements at the tensile carriers at a pre-prepared location along the support so that the tensile carriers are directly electrically contactable through the contact elements at the pre-prepared location by a contacting device; and carrying out the pre-preparing step before transport of the support to the elevator installation.

2. The method according to claim 1 including during the pre-preparing step freeing the tensile carriers at least partly from the casing at the pre-prepared location.

3. The method according to claim 1 including dimensioning the pre-prepared location to be guidable through a support fastening device.

4. The method according to claim 1 including a step of mounting a protective element on the support at the pre-prepared location.

5. The method according to claim 1 including performing the pre-preparation steps on a second support end of the support.

6. The method according to claim 5 wherein a distance between the pre-prepared locations of the first and second support ends is greater than a required support length between a first support fastening device and a second support fastening device in the elevator installation.

7. The method according to claim 6 wherein the distance is in a range of 50 to 1,000 centimeters greater than the required support length.

8. The method according to claim 1 including the further steps of: installing the support in the elevator installation by fastening at support fastening devices; electrically connecting the tensile carriers at the pre-prepared location to the contacting device wherein the contacting device is connected with a monitoring unit; and monitoring the support with the monitoring unit by detecting electrical characteristic values of the tensile carriers.

9. The method according to claim 8 wherein when the support means is installed in the elevator installation at least two of the tensile carriers are electrically connected together at a second support end of the support.

10. The method according to claim 8 including performing the pre-preparation steps on a second support end of the support.

11. The method according to claim 10 wherein the contacting device is a first contacting device, wherein when the support is installed in the elevator installation at least two of the tensile carriers are electrically connected together by a second contacting device at the second support end and wherein the tensile carriers are individually electrically measured at the first support end through the first contacting device.

12. The method according to claim 8 wherein when the support is installed in the elevator installation and the support is fastened to the support fastening devices, an excess length of the support is stored behind one of the support fastening devices.

13. The method according to claim 12 wherein the excess length of the support is rolled up and fastened in the elevator installation.

14. The method according to claim 8 wherein when the support is installed in the elevator installation the pre-prepared location is guided through the support fastening device.

Description

DESCRIPTION OF THE DRAWINGS

(1) Details and advantages of the invention are described in the following by way of embodiments and with reference to schematic drawings, in which:

(2) FIG. 1 shows an exemplifying form of embodiment of an elevator installation;

(3) FIG. 2 shows an exemplifying form of embodiment of a pre-prepared support means;

(4) FIG. 3 shows an exemplifying form of embodiment of a pre-prepared support means;

(5) FIG. 4 shows an exemplifying form of embodiment of a pre-prepared support means end;

(6) FIG. 5 shows an exemplifying form of embodiment of a pre-prepared support means end with a contacting device; and

(7) FIG. 6 shows an exemplifying form of embodiment of a pre-prepared support means end with excess length.

DETAILED DESCRIPTION

(8) The elevator installation 40 illustrated schematically and by way of example in FIG. 1 includes an elevator car 41, a counterweight 42 and a support means 1 as well as a drive pulley 43 with associated drive motor 44. The drive pulley 43 drives the support means 1 and thus moves the elevator car 41 and the counterweight 42 in opposite sense. The drive motor 44 is controlled by an elevator control 45. The car 41 is designed to receive persons and/or goods and to transport them between floors of a building. The car 41 and counterweight 42 are guided along guides (not illustrated). In the example the car 41 and the counterweight 42 are each suspended at support rollers 46. The support means 1 is in that case fixed at a first support means fastening device 47 and then guided initially around the support roller 46 of the counterweight 42. The support means 1 is then laid over the drive pulley 43, guided around the support rollers 46 of the car 41 and finally connected by a second support means fastening device 47 with a fixing location. This means that the support means 1 runs over the drive 43, 44 at a speed which is higher, in correspondence with a suspension factor, than the car 41 and counterweight 42 move. In the example the suspension factor is 2:1.

(9) A free end 1.1 of the support means 1 is provided with a contacting device 2 for temporary or permanent contacting of the support means 1. In the illustrated example a contacting device 2 of that kind is arranged at both ends of the support means 1. In an alternative form of embodiment (not illustrated) only one contacting device 2 is arranged at one of the support means ends 1.1. The support means ends 1.1 are no longer loaded by the tension force in the support means 1, since this tension force is already conducted in advance into the building by way of the support means fastening devices 47.

(10) The contacting devices 2 are thus arranged in a region, which is not rolled over, of the support means 1 and outside the loaded region of the support means 1. The contacting devices 2 are electrically connected with a monitoring unit 48 for checking the electrical resistance of individual tensile carriers in the support means 1.

(11) The illustrated elevator installation 40 in FIG. 1 is by way of example. Other suspension factors and arrangements such as, for example, elevator installations without a counterweight are possible. The contacting device 2 for contacting the support means 1 is then arranged in correspondence with the positioning of the support means fastening devices 47.

(12) A support means 1 with a pre-prepared location 8 at a first support means end 1.1 is illustrated in FIG. 2. According to a first embodiment the support means is pre-prepared only at one end, so that the support means can at the time of installation in elevator installation be cut to length. In that case, in each instance at least two tensile carriers are electrically connected together at a non-pre-prepared second support means end so that in each instance at least two tensile carriers are connectible in series, wherein the tensile carriers have to be electrically contacted or measured only at the first support means end by a monitoring unit.

(13) A support means 1 pre-prepared at both ends is illustrated in FIG. 3. In that case, the pre-prepared locations 8 are located at a first and a second support means end 1.1. A distance 10 between the pre-prepared locations 8 comprises a necessary support means length 11 and an excess length 12. In that case, the necessary support means length 11 amounts to an expected support means length between two support means fastening devices in the elevator installation and the excess length 12 serves as a safety margin. The excess length 12 can then be, for example, between 50 and 1,000 centimeters, preferably between 100 and 500 centimeters, particularly preferably between 150 and 300 centimeters.

(14) An exemplifying form of embodiment of a pre-prepared support means end 1.1 is illustrated in FIG. 4. The support means 1 in that case comprises tensile carriers 5 arranged parallel to one another and a casing 6, wherein the tensile carriers 5 are substantially enclosed by the casing 6. The tensile carriers 5 are freed at least partly from the casing 6 at the pre-prepared location 8 and in addition contact elements 9 are arranged at the tensile carriers 5. Such contact elements 9 allow a simple and secure electrical contacting of the tensile carriers by a contacting device.

(15) An exemplifying form of embodiment of a support means end 1.1 with a contacting device 2 is illustrated in FIG. 5. The support means 1 again comprises tensile carriers 5 arranged parallel to one another and a casing 6, wherein the tensile carriers 5 are substantially enclosed by the casing 6. The contacting device 2 is arranged on the pre-prepared location (not visible). In this embodiment the contacting device comprises a base and a cover, which facilitate mounting of the contacting device at the pre-prepared location.

(16) The contacting device 2 additionally comprises a plug strip so that the contacting device 2 and thereby the tensile carriers 5 can be electrically connected in simple mode and manner with the monitoring unit (not illustrated).

(17) An exemplifying form of embodiment of a support means 1, which is fastened to a support means fastening device 47, with an excess length is illustrated in FIG. 6. The support means end 1.1 again comprises a pre-prepared location 8 and a contacting device 2 arranged at the pre-prepared location 8. The excess length 12 arising due to pre-preparation at two ends and creating an intended margin is, in this embodiment, rolled up. The rolled-up excess length and/or the pre-prepared location 8 can in that case be fastened to a support (not illustrated) in the elevator installation.

(18) In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.