| 摘要 |
A roll changing mechanism for the rolls of a rolling mill which are mounted in a roll stand and which define therebetween a pass line extending in a given direction includes a roll stand changing cart movable in a direction parallel to the direction of the pass line, a horizontal turntable on the roll stand changing cart having guideways thereon for receiving the roll stand and a swiveling frame adapted to have the roll stand supported therein and mounted for rotation in a vertical plane to move the roll stand through an angle of 90 DEG . The mechanism further includes a first conveyor device extending on one side of the swiveling frame between the roll stand changing cart and the swiveling frame for engaging the roll stand and for moving the roll stand from the changing cart to the swivel frame. A second conveyer device located on the opposite side of the swiveling frame operates to engage insert members of the rolls for removing the rolls from the roll stand when the swiveling frame has been rotated to an appropriate position. Both the first and second conveyor device include a chain drive mechanism and guideways upon which the roll stand or the insert members, respectively, are movable. The roll stand includes pawls on opposite sides thereof enabling engagement by a ratchet mechanism on the first conveyer device for moving the roll stand from the roll stand changing cart to the swiveling frame. After the swiveling frame has been rotated through an angle of 90 DEG with the roll stand mounted therein, a ratchet mechanism on the second conveyor device engages a pawl member on the insert member of the rolls to move the rolls and the insert member along guide ways of the second conveyer device whereby the rolls and the insert member may be moved into or out of the roll stand mounted on the swiveling frame.
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