发明名称 |
DOWN PRESSURE SPRING ADJUSTMENT |
摘要 |
A series of notches are provided in the upright plates on one end of a parallel bar linkage connecting a cultivator rig or planter assembly to a tool bar. Coil springs are tensioned between the opposite end of the linkage and a rod and trunnion assembly that fits into the series of notches. The coil springs maintain the rod and trunnion in a selected set of notches. A handle on the rod allows the operator to walk the rod and trunnion assembly up and down the series of notches to select a different set of notches and thereby incrementally adjust the down pressure to a known value or setting. When the tool bar is raised to a transport position and the linkage pivots downwardly to a lowermost position, the spring is stretched only slightly so that down pressure adjustments can be made easily using only the handle on the rod.
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申请公布号 |
CA2161571(C) |
申请公布日期 |
1997.08.12 |
申请号 |
CA19952161571 |
申请日期 |
1995.10.27 |
申请人 |
DEERE & COMPANY |
发明人 |
LOWE, TERRY LEE;NOONAN, JAMES THOMAS |
分类号 |
A01B35/32;A01B71/02;(IPC1-7):A01B63/24 |
主分类号 |
A01B35/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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