Robotic payload transport system

A roller conveyor system configured for installation on top of a mobile robot to provide robotic transport of a payload, comprising:

• a roller conveyor, the roller conveyor comprising:
• a roller assembly comprising a plurality of rollers rotating in a same direction, the rollers configured to move a payload toward a front side of the roller conveyor, each of the rollers being configured to rotate, the roller assembly comprising a leading roller positioned nearest to a front side of the roller conveyor, the leading roller having a leading roller length, the roller assembly further comprising a motorized roller, the motorized roller comprising a motor configured to cause the motorized roller to rotate, the motorized roller having a motorized roller length, the roller assembly further comprising one or more auxiliary rollers, the auxiliary rollers being adjacent to and behind the motorized roller, each of the auxiliary rollers having a respective auxiliary roller length, the motorized roller being physically coupled to the one or more auxiliary rollers by one or more poly-V belts, the roller assembly further comprising a secondary roller physically coupled to the motorized roller by a poly-V belt, the secondary roller also physically coupled to the leading roller by an O-ring belt, the secondary roller positioned adjacent to and immediately behind the leading roller, the secondary roller having a secondary roller length, wherein the motorized roller is positioned adjacent to and immediately behind the secondary roller, wherein the leading roller length is less than the secondary roller length, the leading roller length is less than the motorized roller length, and the leading roller length is less than each of the respective auxiliary roller lengths;
• a backstop operably connected to the roller assembly at a back side of the conveyor, the backstop configured to stop motion of the payload toward the back side of the conveyor;
• and
• a hybrid belt drive configured to drive the rollers, the drive coupling the motorized roller to the leading roller;
• and
• a riser assembly configured to support the roller conveyor, the riser assembly comprising an actuator usable to adjust a height of the roller conveyor above the mobile robot.