An overhead transport vehicle includes: a winding drum configured to be driven by one driving motor, and to cause a holding unit to be lifted and lowered by winding and paying out a plurality of belts; at least one second idler roller around which the belt paid out from the winding drum is wound; a base provided on a traveling unit, and configured to support the winding drum and the second idler roller; and a linear motion mechanism configured to move a position of the at least one second idler roller so that a connecting portion of the belt to the holding unit moves in a lifting direction.

The hoist track adapter is configured for use with a hoist. The hoist track adapter is configured for use with an I-beam. The hoist track adapter attaches the hoist to the I-beam. The hoist track adapter enables the hoist to move along the track formed by the I-beam while the hoist is under load. The hoist track adapter comprises a cross beam, a plurality of beam trolleys, a plurality of brackets, and a plurality of bolts and nuts. The plurality of bolts and nuts: 1) attach the plurality of beam trolleys to the cross beam; and, 2) attach the plurality of brackets to the cross beam. The plurality of beam trolleys attaches the cross beam to the I-beam. The plurality of brackets attaches the cross beam to the hoist.