Patent ID: 8511127

Claim:
A roll-changing pit ( 10 ), which connects a mill hall ( 1 ) with a roll workshop ( 2 ), such that a rolling stand ( 4 ) with work rolls and back-up rolls ( 5 , 6 , 7 , 8 ) is located in the mill hall ( 1 ); and such that a locomotive ( 9 ) can move in the roll-changing pit ( 10 ) in the axial direction of the work rolls and back-up rolls to transport used back-up rolls ( 5 , 6 ) or work rolls ( 7 , 8 ) out of the rolling stand ( 4 ) and into the roll workshop ( 2 ) or to transport new back-up rolls or work rolls from the roll workshop ( 2 ) to the rolling stand ( 4 ), wherein the roll-changing pit ( 10 ) has platforms ( 20 ) on its two edges ( 18 , 19 ) in its upper, wide region ( 17 ), such that the platforms are supported by a pivot and are pivoted downward into a horizontal position during the transport of the work rolls ( 7 , 8 ) and pivoted upward during the transport of the back-up rolls ( 5 , 6 ), and where the platforms ( 20 ), on which the work rolls are supported, also form a track foundation for a roll-changing frame for the back-up rolls, have guide rails ( 21 ) on their upper sides and the platforms are separated by a certain clear distance when pivoted downward in the horizontal position.