PURPOSE: To easily remove a sticking material to an endless belt or the reverse of an endless chain and rotary surfaces of pulleys, enbale smooth rotation without being limited by a carrying material and a sevice place, and reliably prevent damage of the endless belt or the endless chain.

CONSTITUTION: Earth removing tools 13 and 23 are installed on a conveyor 2 having a structure that bars 3 are installed at an equal pitch between a pair of endless belts 4 extended round pulleys 9 rotatably installed on inside surfaces on the tip and the rear end of a pair of conveyor frames 5 so that scraping- away pieces of the earth removing tools 13 and 23 are approached to the pulley 9 on the tip of the conveyor 2 or shaving-off pieces 16 or the like of the earth removing tools 13 and 23 are contacted with or approached to the reverse of the endless belts 4 on the return passage side by using a set of earth removing tools 13 and 23. An agricultural machine of a reaping machine is constituted by using this conveyor 2.