| 摘要 |
A lift truck attachment for handling loads comprises a main frame assembly for attachment to an elevator of a lift truck and a lower slide assembly. The lower slide assembly includes an elongated sliding element for performing a reciprocal motion relative to the main frame assembly. A bottom slide cross tube is furnished and has an elongated structure extending substantially perpendicular to the elongated sliding element. An elongated pusher plate is attached to the bottom slide cross tube and extends substantially parallel to the elongated sliding element. A first shear plate has a first hole and is attached to an end of the bottom side cross tube. A second shear plate has a second hole and is rotatably attached to the first shear plate with a rotation axis disposed substantially parallel to the elongated sliding element. The first hole and the second hole have the same distance from the rotation axis. A threaded safety bolt penetrates through the first hole and through the second hole. A nut engages the threaded safety bolt for rigidly attaching the first shear plate to the second shear plate. The torsional strength of the threaded safety bolt is furnished such that the threaded safety bolt will yield when a safe torsional force level is exceeded.
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