CONTINUOUS UNLOADER CONTROL METHOD

PURPOSE: To make the teaching of scraping locus continuously from the position of a scraping part at the point of time when the end of teaching is instructed by controlling a drive part in automatic operation based on the operation positional information of the drive part corresponding to the past one round moving locus. CONSTITUTION: When the start of manual operation is instructed, a teaching to store the positional information on scraping part 5 at specified intervals and the corresponding positional information on a drive part such as a traveling part 1, a boom 2, etc., is started, and the moving locus of the scraping part 5 obtained from the positional information on the scraping part 5 is displayed on a monitor. When an operator pushes a teaching end button after judging that the teaching locus of the scraping part 5 becomes loop, a playback locus is determined from the position of the scraping part 5 at this point of time, based on the positional information on the drive part corresponding to the past one round moving locus. Thus teaching can be made continuously, and automatic operation can be made based on the moving locus of the scraping part 5 judged most excellent.