HANDLING DEVICE FOR ELEMENTS OF TAPPING RUNNERS

摘要

The present invention relates to a handling device (10) for elements of tapping runners on a shaft furnace, in particular for runner covers. This device comprises a support base (12) arranged on the cast house floor of a blast furnace, laterally of the tapping runner and a frame (14) which is supported by the support base (12) and connected thereto by means of a bearing (38) defining a first axis of rotation (A), which is essentially vertical and about which the frame (14) can rotate relative to the support base (12). The device further comprises a lifting arm (16) having a first end portion (18) and a second end portion (20), the first end portion (18) being connected to the frame (14) by means of at least a first rotational joint (22) defining a second axis of rotation (B), which is essentially horizontal, about which the lifting arm (16) can pivot in order to lower or lift its second end portion (20). A handling member (24) is connected to the second end portion (20) of the lifting arm (16) by means of a second rotational joint (54) defining a third axis of rotation (C), which lies in a plane essentially perpendicular to the second axis of rotation (B), about which the handling member (24) can pivot with respect to the lifting arm (16). Furthermore, the handling device (10) comprises a fork-type grab (26) connected to the handling member (24) and arranged so as to allow picking up; transferring and putting down such elements. The present invention also concerns the use of this handling device (10) in a blast furnace installation, the handling device (10) being installed between two proximate main runners (76, 78) extending radially from the blast furnace (75), for removing, parking, installing and/or exchanging both runner covers (70, 70') of both blast furnace main runners (76, 78).