Spring trip shank assembly having quick-dropping trip-out...

Details Spring trip shank assembly having quick-dropping trip-out... Spring trip shank assembly having quick-dropping trip-out...

A - Human Necessities

01

B

A01B 35/24 (2006.01) A01B 61/04 (2006.01)

Patent

CA 2199335

The spring trip assembly has lever mechanism between the shank and the compression spring which causes the trip-out force of the shank to drop sharply once the relatively high, initial trip-out force level has been reached, thus permitting the shank to slide up and over obstructions without breakage. The compression spring is actuated from both ends simultaneously as the shank rises so that although the trip force drops off quickly, energy also builds up quickly in the spring. Thus, the trip force does not drop as low as it otherwise would, assuring that ample return force is available to reset the shank down into the soil in its working position. Various components of the assembly can be removed and replaced easily without disassembling the entire unit from the tool bar.

Ensemble de déclenchement à ressort comportant un mécanisme de levier entre une tige et un ressort de compression. Ce dispositif est conçu pour qu'une force de déclenchement fasse brusquement tomber la tige lorsqu'un niveau de force de déclenchement initiale relativement élevé a été atteint, pour permettre ainsi à la tige de glisser vers le haut et de traverser les obstructions sans se briser. Le ressort de compression est actionné simultanément à partir de ses deux extrémités lorsque la tige s'élève pour que, même si la force de déclenchement est fournie rapidement, l'énergie augmente rapidement dans le ressort. Ainsi, la force de déclenchement ne diminue pas autant qu'elle le ferait normalement, de sorte que l'on dispose d'une force de retour considérable pour replacer la tige dans le sol en position de travail. Divers composants de cet ensemble peuvent être enlevés et remis en place facilement sans qu'il soit nécessaire de désassembler toute la barre à outils.

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