How to replace the tilt bearing in a converter

Abstract

To provide a method for replacing the tilting bearings of a converter that can shorten the construction period and improve safety. [Solution] The present invention provides a method for replacing the tilting bearing of a converter, which involves replacing the tilting bearing that rotatably supports a trunnion shaft that tiltably supports the furnace body via a trunnion ring, wherein a short pipe is attached to the shaft end of the trunnion shaft, the short pipe is lifted, and then the tilting bearing is removed.

Claims

1. A method for replacing the tilting bearing of a converter, comprising replacing the tilting bearing that rotatably supports the trunnion shaft, which tiltably supports the furnace body via a trunnion ring, A method for replacing a tilting bearing in a converter, characterized by attaching a short pipe to the shaft end of the trunnion shaft, lifting the short pipe, and then removing the tilting bearing.

2. The method for replacing the tilting bearing of a converter according to claim 1, characterized in that the trunnion shaft and the short pipe are fastened and fixed together with a plurality of bolts, and then the trunnion shaft and the short pipe are welded together.

3. The method for replacing the tilting bearing of a converter according to claim 1 or 2, characterized in that the short pipe has a double-circular pipe structure in which an inner circular pipe having a smaller diameter than the outer circular pipe is arranged inside the hollow of the outer circular pipe, and a reinforcing member is provided in the part of the short pipe that is subjected to load when the short pipe is lifted.

4. The reinforcing member is provided in the gap between the outer circular pipe and the inner circular pipe, fixed to the inner circumferential surface of the outer circular pipe and the outer circumferential surface of the inner circular pipe. The method for replacing the tilting bearing of a converter according to claim 3, characterized in that the short pipe is jacked up and lifted using a jack.

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