| 摘要 |
A vertically folding rake assembly is configured for forming a windrow of cut agricultural crop material. The rake includes a trolley (25); a pair of rake arm suspension supports (35a, 35b) interconnected with the trolley and movable in a vertical plane between a raised position and a lowered position, and a vertically movable linkage arrangement (115a, 115b) configured for moving each of the rake arm suspension arrangements between the raised position and the lowered position. The rake further includes a rake arm (30a, 30b) suspended from each of the rake arm suspension supports. Each of the rake arm suspension supports includes a linkage pivotally connected to the trolley and a vertical support member that is pivotal about a vertical pivot axis and in support of the rake arm. The rake arm suspension arrangement further includes a pivot connection to provide pivoting movement of the rake arm about a horizontal axis (300a, 300b), and a counterbalancing biasing arrangement (310a, 310b) to center each rake arm. |
