| 摘要 |
An agricultural implement such as a folding rake has a main frame and two secondary frames pivotally mounted on opposite sides of the main frame f or pivotal movement between a transport position extending along respective sid es of the main frame and a field position diverging from the respective sides of t he main frame. A folding mechanism for moving the secondary frames between their transport and field positions includes two fold arms pivotally mounted on the main fra me and two connection braces pivotally connected to the respective secondary frames and the fold arms. The fold mechanism includes a fold actuator for pivoting the fold arms about the fixed pivot to move the secondary frames between the transport and the field positions. The preferred fold actuator includes a slide mounted on the main frame of the implement, links connecting the slide to the fold arms and an hydraulic cylinder mounted on the main frame for moving the slide along the main frame . The arms isolate the fold actuator from forces acting on the secondary frame, mitigating the potential for cylinder creep. The implement can be used with only one of the secondary frames deployed by disconnecting one of the links from the slide.< /SDOAB>
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