Patent ID: 8616340
Filing Date: 2013-12-31
Classification: B66B,Y10T

Abstract:
1. An elevator arrangement in a construction-time elevator, comprising: an elevator hoistway formed and surrounded by wall structures, an elevator car, hoisting roping for moving the elevator car in the elevator hoistway, a supporting platform, for supporting the elevator car below the supporting platform via the hoisting roping, a traction sheave driven by an electric motor for moving the hoisting roping, a movable support structure above the supporting platform in the elevator hoistway, a hoisting unit arranged to lift the supporting platform upwards in the elevator hoistway supported by the movable support structure, wherein the supporting platform is, for the purpose of the lifting, suspended from the movable support structure by at least one hoisting device and rope comprised in the hoisting unit with a lifting ratio of 1:x, where x is greater than 1, wherein the movable support structure is in direct contact with, and supported on, the wall structures of the elevator hoistway for taking a vertical support force needed for lifting the supporting platform from a building, wherein the hoisting unit comprises a first hoisting device and a second hoisting device, which are arranged to lift the supporting platform with at least one rope connected to the supporting platform and to the movable support structure with the aforementioned lifting ratio, and wherein the first hoisting device and the second hoisting device are located on two different upper beams, respectively, of the supporting platform.