| 摘要 |
A draper belt tensioning mechanism for a harvesting platform includes a linkage having a bell crank coupled to the belt idler roller to move the idler roller away from the drive roller when the bell crank is rotated to tension the draper belt. A strut coupled to the bell crank and a spring biasing the strut produces the force to tension the belt. The linkage, except for the spring, is enclosed within the belt envelope. A spring gauge is positioned adjacent the spring to readily determine if the spring is compressed to the desired length. In a preferred embodiment, the spring and gauge are located to be visible by a machine operator.
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