| 摘要 |
A hoisting apparatus using a counterweight includes a drum (34) which turns when driven by electric power and is installed at a predetermined height in a predetermined structure, a first wire rope (40) having one end fixed to the drum, winding up around the drum when the drum turns in a first direction and unwinding from the drum when the drum turns in a second direction that is opposite to the first direction, a second wire rope (41) having one end fixed to the drum, winding up around the drum when the drum turns in the second direction, unwinding from the drum when the drum turns in the first direction, and having a predetermined hook device (37) for hooking and unhooking an object to be hoisted, installed at the other end of the second wire rope, and a counterweight (35) connected to the other end of the first rope. |
