| 摘要 |
A transfer unit for transporting heavy loads from station to station for work to be carried out on the load on a grillage divided up into a plurality of passageways, rails being mounted in the passageways for carriages or bogies carrying jacks for lifting a beam on each carriage to raise the load from the grillage with means for driving the carriages or bogies in synchronism and fairing jacks for lining up the load on the grilling or on the beam.
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