Electrically insulating suspension device mounting fixture

Abstract

An elevator system has a car and a suspension device, wherein the car is least partially carried by the suspension device. The suspension device includes several electrically conductive tension members that are arranged parallel to one another and are essentially enclosed by a jacket. The suspension device is attached to suspension device mounting fixtures, wherein the suspension device mounting fixtures each include a housing and a clamping element. The housing and the clamping element have clamping surfaces between which the suspension device is clamped. The clamping element and/or the housing is made of an electrically insulating material.

Claims

1. An elevator system having a car and a suspension device, wherein the car is at least partially carried by the suspension device, wherein the suspension device includes several electrically conductive tension members that are arranged parallel to one another and are essentially enclosed by jacket, wherein the suspension device has a first side and a second side, wherein the suspension device is attached to suspension device mounting fixtures, the suspension device mounting fixtures each comprising: a housing; a clamping element, wherein the housing and the clamping element each have clamping surfaces between which the suspension device is clamped; wherein the clamping element is formed of an electrically insulating material being a ceramic material or wood; wherein the housing is formed of an electrically insulating material being a ceramic material or wood; and wherein the clamping element is formed as a wedge and the suspension device is configured to wrap around the wedge.

2. The elevator system according to claim 1 wherein the first side of the suspension device has a first jacket thickness between the tension members and a first surface of the jacket, wherein the second side of the suspension device has a second jacket thickness between the tension members and a second surface of the jacket, wherein the first jacket thickness is greater than the second jacket thickness, and wherein the second surface is arranged on the clamping element formed of the electrically insulating material or the housing formed of the electrically insulating material.

3. The elevator system according to claim 2 wherein the first side of the suspension device is a traction side that is in contact with a traction sheave of a drive, wherein the second side of the suspension device is a back side, wherein the second side of the suspension device is arranged on the clamping element.

4. The elevator system according to claim 3 wherein longitudinal ribs are embodied on the traction side of the suspension device.

5. The elevator system according to claim 1 wherein the wood is an impregnated wood.

6. The elevator system according to claim 1 wherein at least one of the clamping element and the housing is a single piece.

Description

DESCRIPTION OF THE DRAWINGS

(1) Details and advantages of the invention shall be described in the following using exemplary embodiments and referencing the schematic drawings.

(2) Shown are:

(3) FIG. 1 is one exemplary embodiment of an elevator system;

(4) FIG. 2 is one exemplary embodiment of a suspension means mounting device;

(5) FIG. 3a is one exemplary embodiment of a housing of a suspension means mounting device;

(6) FIG. 3b is one exemplary embodiment of a clamping element of a suspension means mounting device; and,

(7) FIG. 4 is one exemplary embodiment of a suspension means.

DETAILED DESCRIPTION

(8) The elevator system 40 depicted schematically and by way of example in FIG. 1 includes an elevator car 41, a counterweight 42 and a suspension means or suspension device 1, as well as a traction sheave 43 along with associated drive motor 44. Traction sheave 43 drives suspension means 1 and thereby moves elevator car 41 and, in mirror-inverted motion, counterweight 42. Drive motor 44 is controlled by an elevator control 45. Car 41 is designed to hold people and/or freight and transport them between floors of a building. Car 41 and counterweight 42 are guided along by guides (not depicted). In the example, car 41 and counterweight 42 are each suspended on support rollers 46. In this arrangement, suspension means 1 is secured to a first suspension means mounting fixture 47 and then first guided around support roller 46 of counterweight 42. Then, suspension means 1 is placed over traction sheave 43, guided around support roller 46 of car 41 and finally connected to a fixed point by a second suspension means mounting fixture 47. This means that suspension means 1 runs through drive 43, 44 at a higher speed than car 41 or counterweight 42 corresponding to a reeving factor. In the example the reeving factor is 2 to 1.

(9) A loose end 1.1 of suspension means 1 is provided with contacting device 2 for the temporary or permanent contacting and monitoring of the suspension means 1. In the depicted example, such a contacting device 2 is arranged at both ends of suspension means 1. In an alternative embodiment, not depicted, only one contacting device 2 is arranged at suspension means ends 1.1. Suspension means ends 1.1 are no longer loaded by the tensile force in suspension means 1 because this tensile force is already conducted beforehand through the suspension means mounting fixtures 47 into the building.

(10) The contacting devices 2 are therefore arranged in an area of suspension means 1 that is not rolled over and are outside the loaded area of suspension means 1.

(11) Elevator system 40 shown in FIG. 1 is an example. Other reeving factors and arrangements, such as elevator systems without a counterweight, are possible. Contacting device 2 for contacting suspensions means 1 is then arranged corresponding to the placement of suspension means mounting fixtures 47.

(12) An exemplary embodiment of a suspension means mounting device 47 is depicted in FIG. 2 with suspension means 1 placed therein. Suspension means mounting device 47 comprises a housing and clamping element 8 arranged therein. The housing is attached to an element in the elevator system via threaded bar 9. Suspension means mounting device 47 may be connected to a car, counterweight or carrier via threaded bar 9.

(13) Suspension means 1 placed in suspension means mounting device 47 has a loaded side and loose suspension means end 1.1. Suspension means 1 is clamped in suspension means mounting device 47 by clamping surfaces of clamping element 8 and the housing.

(14) To electrically insulate at least one side of suspension means 1 from the clamping surfaces of clamping element 8 and the housing, clamping element 8 and/or the housing are made of an electrically insulating material, for instance ceramic.

(15) Clamping element 8 and housing 7 are depicted in FIGS. 3a and 3b. When in use, the suspension means is clamped between clamping surfaces 17, 18 of clamping element 8 and clamping surfaces 14, 15 of housing 7. To electrically insulate at least one side of the suspension means from clamping surfaces 17, 18 of clamping element 8 and clamping surfaces 14, 15 of housing 7, clamping element 8 and/or housing 7 are made of an electrically insulating material, for instance ceramic.

(16) Housing 7 and clamping element 8 are embodied in one piece in FIGS. 3a and 3b.

(17) Depicted in FIG. 4 is an exemplary embodiment of a suspension means 1. Suspension means 1 comprises several electrically conductive tension members 5 that are arranged parallel to one another and are essentially enclosed by jacket 6. Suspension means 1 has first side 10 and second side 11. First side 10 of suspension means 1 is embodied as a traction side that is in contact with a traction sheave of a drive. Second side 11 of suspension means 1 is embodied as a back side. In this exemplary embodiment, traction side 10 comprises longitudinal ribs. Such ribs enhance traction of suspension means 1 on the traction sheave and also improve protection of tension members 5.

(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.