| 摘要 |
<p>An apparatus and a method to assist in the installation of a helical pile. The apparatus comprises a drive mechanism having an engaged and a disengaged configuration. When in its engaged configuration the drive mechanism operatively grips the exterior surface of the helical pile. When in its disengaged configuration the drive mechanism operatively releases the exterior surface of the helical pile. Movement of the drive mechanism when in its engaged configuration causes rotational movement of the pile. When in its disengaged configuration the drive mechanism moves without rotation of the pile.</p> |
