Device for rotating object

An apparatus for rotating an object, comprising:

• a driving unit comprising a driving shaft and a driving source device for rotating the driving shaft in two way directions of a first direction and a second direction, the driving shaft comprising a drive-side roller for transmitting a rotational motion to the object upon contact with the object, the driving shaft including a one-directional transmission device, the one-directional transmission device comprising a driving-side part and a driven-side part, the driving shaft being fixed to the driving-side part or integrated with the driving-side part, and the one-directional transmission device comprising a mechanism for transmitting only a rotational driving force in the first direction of the driving shaft to the driven-side part;
• a supporting member supporting the driving unit or a driven unit;
• a propulsive force applying device configured to apply a forward directional force to the driving unit or the driven unit;
• and
• a mechanism for converting the rotational driving force in the first direction to be transmitted to the driven-side part of the one-directional transmission device and moving the driving unit in a direction away from the object, or a mechanism for converting the rotational driving force in the first direction to be transmitted to the driven-side part of the one-directional transmission device and moving the driven unit in a direction away from the object, wherein
• the driven unit comprises a driven-side member gripping the object rotatably in cooperation with the drive-side roller, and
• the drive-side roller is rotated to transmit rotational motion to the object by the rotational driving force in the second direction of the driving shaft.