Overhead transport vehicle and transport vehicle system

An overhead transport vehicle in which a lifting part including a gripping part configured to grip an article is configured to be lifted and lowered by a plurality of suspending members, the overhead transport vehicle comprising:

• a winding drum configured to lift and lower the lifting part by winding and paying out the suspending members;
• at least one guide roller around which the suspending members paid out from the winding drum are wound;
• a body part supporting the winding drum and the at least one guide roller;
• at least one position adjusting part configured to move a portion of each suspending member connected to the lifting part in a lifting direction by moving a relative position of the at least one guide roller with respect to the body part;
• a control part configured to control movement of the guide roller by the at least one position adjusting part, based on information on an inclination of the lifting part;
• and
• a storage unit configured to store a movement amount of the at least one guide roller determined based on the information on the inclination or store the information on the inclination, wherein
• the control part controls the movement of the at least one guide roller by the at least one position adjusting part, based on the movement amount or the information on the inclination, wherein
• the storage unit stores the movement amount or the information on the inclination for each transfer part where the article is delivered to and from the overhead transport vehicle, and
• the control part controls the movement of the at least one guide roller by the at least one position adjusting part, based on the movement amount or the information on the inclination for each transfer part.