| 摘要 |
A hole digger assembly which includes a truck, a turntable on the truck, a boom mounted to the truck via links, cylinders between the links and the turntable and between the boom and the turntable for moving the boom, a drill mechanism which is mounted to the boom, and a cylinder for moving the drill mechanism between an operative position and a storage position at which the drill mechanism is parallel to the boom and partly located between two opposed side walls of the boom. |
