| 摘要 |
PROBLEM TO BE SOLVED: To avoid a costly concrete placement work by carrying in a plurality of metal supports in an area of a notched part of a table plate so as to be coupled with a bottom plate or a floor panel, lowering and placing a new machine part on the metal supports by a hoist together with a metal frame, and coupling the part with the metal supports after correcting the final position. SOLUTION: A new generator 5b is installed on a metal frame 12 to constitute exchanging units 5b, 12. At least four metal supports 13 are carried in a notched part 11 of a table plate 7 and anchored on a bottom plate 9. The exchanging units 5b, 12 are lifted above the table plate 7, and lowered on the metal supports 13, and the position is corrected by an intermediate plate or a shifter. A metal plate 20 having a rectangular groove is fitted on the table plate 7, and a rectangular metal key 21 is fitted on a metal frame. The exchanging stage is completed by engaging the groove in the metal plate 20 with the metal key 21. A time-consuming and costly concrete work can be avoided. |
