| 摘要 |
The present invention relates to a selective lifting device provided between adjacent sliding doors in order to selectively open or close some of a plurality of sliding doors that are provided in various types of structures, such as gymnasiums, warehouses, floodgates, et cetera. The selective lifting device of the present invention is provided between adjacent sliding doors in order to selectively open or close a plurality of sliding doors that are arranged in a line so as to be spaced apart from each other, the selective lifting device comprising: a support part coupled to one side of each sliding door and having a through-hole formed in the center thereof and grooves formed along the inner circumferential surface of the through-hole, wherein the number of grooves is the same as, or greater than, that of the sliding doors; and a shaft coupled through the through-hole of the support part so as to be able to rotate and slide and having a stopping protrusion protruding therefrom and located below the support part, wherein one of the grooves of the support part is closed to form a stopper by which the stopping protrusion is stopped, and the stopper is formed in a position that is different from that of a stopper of another support part. |
