Patent ID: 8062579
Filing Date: 2011-11-22
Classification: B66F,C21B,F27B,F27D

Abstract:
1. Device for moving a runner of a shaft furnace between an upper tapping floor level, where the runner is in an operational position in front of a taphole of the furnace, and a lower service level, where the runner is accessible for replacement, comprising: a first support and a second support forming a base member, a carrier member for bearing said runner, said carrier member having a first and a second longitudinal portion, said second portion being remote from said first portion in longitudinal direction, a first lifting member connected via a first articulation to said first longitudinal portion and via a second articulation to said first support, and a second lifting member connected via a third articulation to said second longitudinal portion and via a fourth articulation to said second support, which form a four-bar equivalent mechanism, and said device further comprising a traction link connected via a fifth articulation to said first lifting member and via a sixth articulation to said second lifting member such that the axes of rotation of said fifth and sixth articulations remain above the plane defined by the axes of rotation of said second and fourth articulations when said carrier member is in a lower position reached by taking or traversing the change point configuration of said four-bar equivalent mechanism.