| 摘要 |
<p>Disclosed herein is a jib hold rod securing device for cranes comprising a jib (3) to be stretched out and taken in its relative position to a boom (2) and a jib hold rod (7) suspended between the jib (3) and the top portion of the boom (2) to support the jib (3) in its stretched-out position and characterized in that the jib hold rod (7) has its top portion engaged and linked with the jib (3) to serve as its fulcrum to swing between its taken-in position with its base portion attached to the base portion of the jib (3) and its jib holding position with its base portion attached to the top portion of the boom (2) and the jib hold rod (7) is provided with a rod holding means (11) suspended between the jib hold rod (7) and the jib (3) with the jib hold rod set in its jib holding position to hold the jib hold rod (7) in its jib holding position, thereby making its structure simple and its cost low and allowing easy jib re-positioning operations with assured safety and less labor. <IMAGE></p> |
