| 摘要 |
An agricultural implement frame comprises a main frame having ground engaging wheels, a mast extending upwardly and forwardly from the main frame, a truck slidably mounted on the mast, and a carrier frame pivotally mounted to the truck. Two hydraulic lift cylinders are used to raise and lower the truck on the mast. A hydraulic pivot cylinder is used to pivot the carrier frame relative to the truck on a vertical pivot located on the truck. Rollers forming a bearing facilitates the sliding movement of the truck on the mast.
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