Construction elevator device

A construction elevator device comprising:

• a support member provided in a hoistway;
• a machine room unit placed under the support member;
• and
• machine room unit hoisters by which the machine room unit is suspended from the support member so as to be movable in an ascending/descending direction,
• wherein the machine room unit hoisters being at least three in number are provided, supported by the support member, and there are at least three suspension points of the machine room unit;
• and
• when viewed from a virtual horizontal plane over the machine room unit, distances from a center of gravity of the machine room unit to each of the suspension points are substantially equal and the center of gravity is positioned within a region enclosed by virtual straight lines connecting each of the suspension points, wherein
• the machine room unit includes a first machine room unit and a second machine room unit;
• the first machine room unit includes a winch that winds up a main rope to move a car up and down;
• the second machine room unit includes a main rope drum to extend the main rope;
• and
• the machine room unit hoisters pull up the second machine room unit.