Roll changing device

A roll changing device for changing a pair of top and bottom work rolls provided in a rolling mill for rolling a strip to be passed therethrough,

• the roll changing device comprising:
• a work roll holding unit holding two pairs of work rolls including of top and bottom work rolls in an attachable/detachable manner at positions separated from each other in a threading direction and capable of moving the work rolls in the threading direction;
• a roll holding device including the work roll holding unit and capable of moving in a roll axis direction relative to the rolling mill in a state of holding the work rolls by using the work roll holding unit;
• and
• a work roll transfer device capable of moving in a direction intersecting with a moving path of the roll holding device and capable of mounting the work rolls, wherein the roll holding device gives or receives the work rolls to or from the work roll transfer device which has moved to the moving path of the roll holding device.