Abstract: An excavator for a bucket elevator type continuous unloader has a horizontal travel section constituting an excavating section of the bucket elevator which is constituted by an endless bucket chain, and a parallel link mechanism. The parallel link mechanism is positioned below an elevator post which is moved up and down by a boom, and supports the horizontal travel section. The excavating section is moved sideways from just below the elevator post by swinging the parallel link mechanism so as to rake up bulk cargo such as ore and coal located deep inside the hold. The degree of movement of the excavation section in the vertical direction is detected by detecting the swing angle of the parallel link mechanism, by which the boom is automatically controlled so as to maintain the excavating section at the same level. In this way, fumbling of the excavated bulk cargo can be prevented.