| 摘要 |
A disk opener and packer wheel system for maintaining a constant disk opener depth and for maintaining a constant packing of the soil by the packer wheel when planting upon uneven surfaces. The inventive device includes a frame having a bracket for attaching to the drill, a pair of support arms pivotally attached to the frame, a compression spring positioned between the support arm and the frame, a first member pivotally attached between the pair of support arms, a second member pivotally attached between the pair of support arms, a disk opener attached to the lower end of the first member, a packer wheel attached to the lower end of the second member, and an adjusting shaft adjustably positioned between the upper ends of the first member and the second member. In use, when the disk opener engages a hard object, such as a rock, the disk opener and the support arm are elevated while the packer wheel is forced downwardly to compensate for the elevated support arm. When the packer wheel engages a hard object, such as a rock, the packer wheel and the support arm are elevated while the disk opener is forced downwardly to compensate for the elevated support arm. The user may adjust the relative heights of the disk opener and the packer wheel by simply manipulating the adjusting shaft.
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