发明名称 |
AGRICULTURAL RIG PRESSURE ADJUSTMENT WITH OVERCENTER TOGGLE |
摘要 |
Down pressure-structure for providing an adjustable down force on a rig of row crop implement such as a cultivator includes an overcenter toggle connected to the rig for pivoting about a toggle axis between a first and second positions. The toggle has a protrusion that contacts the edge of a rig plate at two different locations corresponding to a light and a heavy down pressure position. A down pressure spring is tensioned between the frame and the toggle and maintains the toggle in a selected one of two overcenter positions corresponding to the two different spring tension positions. A hex projection on the toggle receives a conventional wrench for moving the toggle between the first and second positions. A second toggle and down pressure spring combination provide additional spring adjustments so that at a numerous easily determinable down pressure settings are available.
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申请公布号 |
CA2183172(C) |
申请公布日期 |
1998.07.21 |
申请号 |
CA19962183172 |
申请日期 |
1996.08.12 |
申请人 |
DEERE & COMPANY;DEERE & COMPANY |
发明人 |
LOWE, TERRY LEE;NOONAN, JAMES THOMAS |
分类号 |
A01B63/24;(IPC1-7):A01B63/24 |
主分类号 |
A01B63/24 |
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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