Drive transmission device and lifting device equipped with the same

A drive transmission device comprising:

• a reference shaft positioned on a reference axis;
• a first target shaft and a second target shaft, positioned on a target axis that is a separate axis parallel to the reference axis;
• a first reference rotator and a second reference rotator attached to the reference shaft;
• a first rotator attached to the first target shaft;
• a second rotator attached to the second target shaft;
• a first endless transmitter wound around the first reference rotator and the first rotator;
• a second endless transmitter wound around the second reference rotator and the second rotator;
• and
• a shaft coupling configured to connect the first target shaft and the second target shaft to each other,
• wherein when a direction parallel to the reference axis and the target axis is defined as an axial direction, the first target shaft and the second target shaft are arranged with a gap in the axial direction,
• the first rotator and the second rotator are positioned on the target axis to be arranged side by side in the axial direction, and
• the shaft coupling is connected to both the first rotator and the second rotator.