| 摘要 |
PURPOSE:To effectively discharge excavated soil and sand from a large-diameter and deep underground tank hole to the ground's surface by using a system in which a soil and sand discharging conveyer is made movable in a vertically shuttling manner. CONSTITUTION:A shuttle conveyer 6 is made up by attachig a vertically movable frame 2 to the end of a horizontal frame 1 in such a way as to enable it to move vertically and by laying endlessly a soil and sand discharging conveyer 3 on the peripheries of the vertical and horizontal frames 2 and 1. Then, the shuttle convenyer 6 is attached to a running device in a movable manner. Thus, soil and sand excavated by lowering the vertically movable frame according to the depth of hole can be discharged. Also, because th conveyer is attached to the running device in such a way as to enable it to move wholly vertically, the setting and moving of the conveyer are made easier. |
