Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DRILLING SHAFT ABUTTING APPARATUS
A drilling shaft abutting apparatus is disclosed herein. The apparatus includes a plate having an arcuate edge. The arcuate edge is configured to at least partially encircle a drilling shaft. The apparatus also includes a first blade mounted on the plate for pivoting movement between a first retracted position and a first fully-pivoted position. The first blade passes across the arcuate edge during movement between the first retracted position and the first fully- pivoted position. The first blade prevents items from falling down a hole at least partially occupied by the drilling shaft. The apparatus includes at least one actuator operable to selectively urge the first blade to at least one of the first retracted position and the first fully-pivoted position.
DRILLING SHAFT ABUTTING APPARATUS
A drilling shaft abutting apparatus is disclosed herein. The apparatus includes a plate having an arcuate edge. The arcuate edge is configured to at least partially encircle a drilling shaft. The apparatus also includes a first blade mounted on the plate for pivoting movement between a first retracted position and a first fully-pivoted position. The first blade passes across the arcuate edge during movement between the first retracted position and the first fully- pivoted position. The first blade prevents items from falling down a hole at least partially occupied by the drilling shaft. The apparatus includes at least one actuator operable to selectively urge the first blade to at least one of the first retracted position and the first fully-pivoted position.
DRILLING SHAFT ABUTTING APPARATUS
APPAREIL D'ASSEMBLAGE BOUT-A-BOUT DE TIGES DE FORAGE
ROSS DAMON B (Autor:in) / TUPECHKA DARCY (Autor:in)
01.09.2015
Patent
Elektronische Ressource
Englisch
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