Transport vehicle

A transport vehicle configured to travel in a travel direction along a travel rail, comprising:

• a body comprising a first wheel and a second wheel disposed at different positions to each other in the travel direction and configured to roll on the travel rail;
• a first drive device configured to drive the first wheel;
• a second drive device configured to drive the second wheel;
• and
• a control device configured to control the first drive device and the second drive device,
• wherein the control device controls the first drive device and the second drive device in such a manner that a torque ratio of a wheel with increased load, which is a ratio of a torque transmitted to the wheel with increased load to a sum of a first wheel torque and a second wheel torque, is higher while the body is accelerating and decelerating than while the body is traveling at constant velocity,
• wherein where the first wheel torque is a torque transmitted from the first drive device to the first wheel, the second wheel torque is a torque transmitted from the second drive device to the second wheel, and the wheel with increased load is one of the first wheel and the second wheel that is subjected to an increase in vertical downward load that increases in response to acceleration or deceleration of the body, and
• wherein the control device:
• determines the second wheel torque based on multiplication of the first wheel torque by a setting coefficient;
• sets the setting coefficient to a predetermined reference value, while the body is traveling at constant velocity;
• and
• sets the setting coefficient to a value smaller than the reference value in response to the first wheel being the wheel with increased load, and to a value larger than the reference value in response to the second wheel being the wheel with increased load, while the body is accelerating or decelerating.