| 摘要 |
A bifold rake for forming a windrow of cut agricultural crop material includes a rear trolley (22) to which a pair of rake arms (30) are pivotably mounted, and a drawbar (44) extending forwardly from the rear trolley and adapted for interconnection with a two vehicle such as a tractor. Each rake arms (30) carries a series of rake members (32). An opening and closing mechanism (105) is interconnected between the drawbar and the rake arms, and includes front (110) and rear (106) operating arms located on each side of the drawbar and pivotably interconnected with each other and with one of the rake arms. The inner end of each front and rear operating arm is pivotably interconnected with a slidable arrangement associated with the drawbar. In one form, the slidable arrangement is a sleeve (102) that is slidably mounted to the drawbar for axial movement. In another form, the slidable arrangement is the form of a telescoping section of the drawbar which is capable of moving inwardly and outwardly relative to a receiver section of the drawbar. An extendible and retractable actuator assembly, such as a hydraulic cylinder assembly (104), is interconnected with the drawbar and at least one of the slidable arrangements for moving the front and rear arms together and apart so as to move the rake arms between open and closed positions. A splitter wheel rake assembly is interconnected between the drawbar and a hitch member, for directing crop material in opposite directions away from the center of the trolley to rake the crop material into a windrow. The splitter wheel rake assembly includes a frame arrangement having a pair of offset frame members, and a splitter rake member (78) mounted to each offset frame member. The splitter rake members are configured to direct the crop material in opposite directions. The splitter wheel rake assembly is selectively engageable with the drawbar. |
