发明名称 MAINTENANCE AND EXTRACTION OF POLES
摘要 An apparatus for excavation of earth around a pole embedded in an earth surface comprises a hollow auger (19) in the form of a cylindrical drum (21) with a helical flight (22) about the outer wall thereof. The hollow auger (19) is constructed in two halves to enable movement between an open position and a closed position embracing the pole. The hollow auger (19) is rotatably journalled in a support frame (15) and is driven by a drive motor (20) engaging a spur gear (26) around the upper position of the auger (19). The support frame (15) is slidably mounted on a frame (10) to enable extension and retraction of the auger (19).
申请公布号 WO9218705(A1) 申请公布日期 1992.10.29
申请号 WO1992AU00169 申请日期 1992.04.16
申请人 POLEMATE PTY. LTD. 发明人 CAHILL, GAVIN, JOHN;LOUSICK, RONALD, WILLIAM;FALKENHAGEN, ERIC, ALAN
分类号 E04H12/22;E04H12/34;E04H17/26;E21B7/00;E21B7/28;E21B10/44 主分类号 E04H12/22
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