| 摘要 |
PURPOSE: An excavator is provided to prevent malfunction which is caused by the amount of the excavated soil. CONSTITUTION: An excavator comprises a rotatable driving shaft, a transmission unit(3), and a removal unit of an excavated material. The transmission unit comprises an outer ring gear(33), a planetary gear(34) which engages with an outer ring gear, a sun gear(35) which engages with planetary gears, a first sleeve(37) which is united to the driving shaft, a plate which is united to the first sleeve, a second sleeve(38), and two of arc-shape elements(39). The removal unit of an excavated material has a rotatable shaft which is passed by the center of the transmission unit area, a sleeve element which is united at the bottom of the first sleeve, a helical spiral blade which is formed at the sleeve element, a drilling blade which is loosely united at the end of the protruded shaft. |
