| 摘要 |
PROBLEM TO BE SOLVED: To provide an excavator that enables efficient excavation to be performed even by a small-sized excavator, and a chemical feeding method using the same.SOLUTION: An outer peripheral casing rotated by obtaining a driving force from heavy equipment, a crushing hammer 5 moving upward and downward within the outer peripheral casing, and driving means 6 for the hammer 5 are arranged. The hammer 5 is moved upward and downward by the driving means (an air cylinder and a hydraulic cylinder), and excavation is performed by the outer peripheral casing 2 and the hammer 5. |
