| 摘要 |
A fold structure for a boom. The boom includes an inner boom portion having an inner boom portion top surface and an outer boom portion having an outer boom portion top surface. In a working position the inner boom portion and the outer boom portion are aligned lengthwise. The fold structure includes a bracket, a first hinge coupled to the bracket and configured to be pivotally coupled to the inner boom portion, and a second hinge coupled to the bracket and configured to be pivotally coupled to the outer boom portion. The first hinge is configured to allow the outer boom portion to rotate approximately 180 degrees in a first direction placing the boom in a first folded position. The second hinge is configured to allow the outer boom portion to rotate approximately 180 degrees in a second direction placing the boom in a second folded position. |
