Patent ID: 8528191
Filing Date: 2013-09-10
Classification: H01F,Y10T

Abstract:
1. A U-shaped iron core transporting/assembling method in which a U-shaped iron core of a transformer is disassembled into a first leg iron core, a second leg iron core, and a lower-yoke iron core for transportation and reassembled after the transportation, said method comprising: an in-factory iron core assembling step of assembling the U-shaped iron core in a manufacturing factory of the U-shaped iron core; a U-shaped iron core housing step of housing, after the in-factory iron core assembling step, the U-shaped iron core in a tank that can be divided into a first leg iron core tank and a second leg iron core tank each having an opening portion that opens and closes; a lower-yoke iron core separating step of separating, after the U-shaped iron core housing step, the lower-yoke iron core from the first leg iron core and the second leg iron core in a state where positions of the first leg iron core and the second leg iron core are fixed in the tank; a lower-yoke iron core transporting tank transferring step of transferring, after the lower-yoke iron core separating step, the lower-yoke iron core to a lower-yoke iron core transporting tank; a tank dividing step of dividing, after the lower-yoke iron core transporting tank transferring step, the tank into the first leg iron core tank and the second leg iron core tank for individually housing the first leg iron core and the second leg iron core; a transporting step of individually transporting in a sideways attitude, after the tank dividing step, the first leg iron core, the second leg iron core, and the lower-yoke iron core housed respectively in the first leg iron core tank, the second leg iron core tank, and the lower-yoke iron core transporting tank in a state where the opening portions of the first leg iron core tank and the second leg iron core tank are closed; a lower-yoke iron core assembling tank transferring step of transferring, after the transporting step, the lower-yoke iron core to a lower-yoke iron core assembling tank having an opening portion; a tank connecting step of connecting, after the lower-yoke iron core assembling tank transferring step, the opening portions of the first leg iron core tank, the second leg iron core tank, and the lower-yoke iron core assembling tank with the opening portions of the first leg iron core tank and the second leg iron core tank that are opened while maintaining the first leg iron core, the second leg iron core, and the lower-yoke iron core in a sideways attitude; an iron core connecting step of moving, after the tank connecting step, the lower-yoke iron core to the inside of the first leg iron core tank and the second leg iron core tank and connecting the first leg iron core, the second leg iron core, and the lower-yoke iron core; a lower-yoke iron core assembling tank separating step of separating, after the iron core connecting step, the lower-yoke iron core assembling tank from the first leg iron core tank and the second leg iron core tank while maintaining a connecting state between the first leg iron core tank and the second leg iron core tank; a bottom plate fitting step of fitting, after the lower-yoke iron core assembling tank separating step, a bottom plate to the opening portions of the first leg iron core tank and the second leg iron core tank generated by the separation of the lower-yoke iron core assembling tank from the first leg iron core tank and the second leg iron core tank so as to close the opening portions; and an erecting step of erecting, after the bottom plate fitting step of fitting, the first leg iron core tank and the second leg iron core tank with the bottom plate facing down.