Transport Device

A transport device comprising:

• a transport vehicle configured to transport a transport target by reciprocating along a predetermined moving path;
• a cover member covering the moving path;
• an invasion detection sensor configured to detect an object passing through a detection surface;
• and
• a muting device configured to temporarily invalidate the invasion detection sensor, and
• wherein:
• the transport vehicle comprises a mounting section on which the transport target is placed, and a wagon section configured to support the mounting section and travel;
• the detection surface is disposed above the mounting section such that the detection surface intersects with a movement trajectory of the transport target placed on the mounting section;
• when a moving direction is a direction along the moving path, and a detection coverage range is a range of a position of the transport vehicle, in the moving direction, where the transport target placed on the mounting section intersects with the detection surface, the muting device includes a mount sensor configured to detect whether or not the transport target is placed on the mounting section, and a range detection sensor configured to detect whether or not the transport vehicle is within a target range set based on the detection coverage range;
• the muting device invalidates the invasion detection sensor in response to an affirmative detection result from the mount sensor and an affirmative detection result from the range detection sensor;
• and
• the muting device validates the invasion detection sensor in response to a negative detection result from the mount sensor or a negative detection result from the range detection sensor.