The lower ends of four legs of the stent are equipped with spiral liftingsupport legs.
在支架的四根腿下端安装有螺旋升降支脚。
2
The utility model relates to a liftingsupport device which comprises a main frame body which has a volume set space;
本实用新型是有关一种可升降支承装置，包括一主架体，设有容设空 间；
3
The diving chamber is a watertight compartment with air pipes, the liftingsupport is a girder structure, and the lead rails are arranged under and below the liftingsupport;