Compensation device and elevator

摘要

A compensation device of a traction sheave elevator is provided. The elevator includes a compensation rope running from an elevator car to a compensation sheave of the compensation device located in the lowermost part of the elevator shaft around which the compensation rope runs. The compensation sheave is vertically guided with respect to the shaft bottom via a guiding structure, which allows a vertical movement of the axis of the compensation sheave. The guiding structure includes at least one scissor joint arrangement having its lower end adapted to be connected with an elevator shaft bottom and its upper end being connected with the compensation sheave axis. An elevator includes such kind of compensation device. Vertical movement of the axis of a compensation sheave can be obtained with a very low shaft height requirement.

主权项

1. A compensation device of a traction sheave elevator, which elevator comprises a compensation rope running from an elevator car to a compensation sheave of the compensation device located in an elevator shaft bottom around which the compensation rope runs, whereby the compensation sheave is vertically guided with respect to the elevator shaft bottom via a guiding structure which allows a vertical movement of an axis of the compensation sheave, wherein the guiding structure comprises at least one scissor joint arrangement having its lower end adapted to be connected with the elevator shaft bottom and its upper end being connected with the compensation sheave axis,
wherein the scissor joint arrangement comprises a pair of first arms, a pair of second arms, and at least one horizontal lockdown device, both one of the first arms and one of the second arms pivot at a first pivot, and both the other one of the first arms and the other one of the second arms pivot at a second pivot, the at least one horizontal lockdown device having a first end located at the first pivot, and a second end located at the second pivot, the at least one lockdown device limiting a maximal range of vertical movement of the upper end of the scissor joint arrangement, a total length of the at least one horizontal lockdown device between the first end and the second end changing during the vertical movement of the upper end of the scissor joint arrangement, the total length of the at least one horizontal lockdown device between the first end and the second end being a total length of an entirety of the at least one horizontal lockdown device in a direction from the first end to the second end and changing during the vertical movement of the upper end of the scissor joint arrangement.