PURPOSE: To perform loading an unloading work of a load to and from a large truck in a short time with small man-power, by providing self propelling means in a transport conveyer of goods.

CONSTITUTION: In the lower part of a transport conveyer CO a self-propelling crawler CR is provided to move the conveyer forward and backward by a control box 19, further left and right propelling parts S are caused a speed difference with a limit switch by left and right contact rollers R to automatically perform direction control, then the conveyer is self propelled to enter a luggage room, if moved suitably backward in accordance with a state of progress in the following loading work, even the operator can also perform the loading work at his own hand. Further the operator can perform unloading work similarly in a reverse manner at hand, thus loading and unloading work of loads can be performed in a short time with small man power.