Problem to be solved: to provide a loading and lowering system for quickly detecting the displacement position of the load to the various sizes and kinds of transportation vehicles which stop at the landing place where the load accumulation work is carried out, and transmitting the detected position to the autonomous mobile unmanned vehicle equipped with the loading device.The transport vehicle V includes a bed stand 4A and a vehicle stand 4B.The stacking station a has a stopping vehicle which is a range for stopping the conveyance vehicle v.When the carriage vehicle V stops at the vehicle stop zoneThe rectangular member r of the carrier vehicle V or the vehicle stand 4b is included in the measurement rangeThe distance information group acquiring part 2 which acquires the distance information group by measuring the distance from the object existing in the measurement range andBased on the distance information group acquired in the distance information group acquiring sectionThe ground side control device 3 is provided with a ground side control device 3 for transmitting the descending position information to carry out the loading operation of the load w with respect to the carrier vehicle v.Diagram
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