Patent ID: 8225490
Filing Date: 2012-07-24
Classification: H01F,Y10T

Abstract:
1. A disassembled transportation transformer transporting/assembling method in which a transformer including a U-shaped iron core formed by laminating iron plates is disassembled for transportation and reassembled after the transportation near an installation site of the transformer, the method comprising: a transporting step of transporting the U-shaped iron core in a sideways attitude where the iron plates extend horizontally to a vicinity of the installation site; an erecting step of erecting, after the transporting step, the U-shaped iron core together with an erection tank in a sideways attitude from a state where the iron plates extend horizontally to a state where the iron plates extends vertically to make a bottom plate of the erection tank be positioned at a bottom in a state where the U-shaped iron core is housed in the erection tank, wherein the transporting step including a step of: housing a first leg iron core, a second leg iron core, and a lower-yoke iron core which are obtained by disassembling the U-shaped iron core respectively in a first leg iron core tank, a second leg iron core tank, and a lower-yoke iron core tank each of which has an opening/closing opening portion; closing the opening portions; and transporting the first leg iron core, the second leg iron core, and the lower-yoke iron core individually in a sideways attitude, wherein the erecting step includes a step in which: a portal lifter composed of two booms, which are vertically extensible and parallel movable with a predetermined distance therebetween and between which the erection tank is disposed, and a beam horizontally connecting the two booms and vertically moved as the booms extend or contract is used; the beam supports the erection tank through a flexible member at predetermined support portions; and the beam is vertically moved by extending/contracting the booms; after the transporting step and before the erecting step, a lower-yoke iron core transferring step of transferring the lower-yoke iron core to a lower-yoke iron core assembling tank having an opening portion; a tank connecting step of opening the opening portions of the first leg iron core tank and the second leg iron core tank while maintaining the first leg iron core, the second leg iron core, and the lower-yoke iron core in a sideways attitude and connecting the opening portions of the first leg iron core tank, the second leg iron core tank, and the lower-yoke iron core assembling tank; an iron core connecting step of transferring, after the tank connecting step, the lower-yoke iron core to the insides of the first leg iron core tank and the second leg iron core tank and connecting the first and second leg iron cores and 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 the connecting state between the first leg iron core tank and the second leg iron core tank; and an erection tank forming step of closing, after the lower-yoke iron core assembling tank separating step, the opening portions of the first and second leg iron core tanks generated by the separation of the lower-yoke iron core assembling tank therefrom by fitting a bottom plate thereto to form the erection tank.