A kind of resistance structure of farm machinery,It is for an equipment ontology coupling one of resistance device,And resistance device include a fixed plate body,One movable plate component and an activity bar assembly,And fixed plate body is one end is interconnected and two sides extend in parallel outward plate to form a space,And the aforementioned plate system of what is respectively equipped with a groove； The two sides that there is a first set rod piece system to wear the what fixed plate body for movable plate component system； One second set of rod piece system wears the groove of fixed plate body； One rocker plate system sets the side of the what fixed plate body and connects first set rod piece and second set of rod piece； One first locks the other side of the corresponding fixed plate body for setting the what rocker arm plate body of leverage,And activity bar assembly is set in the space of what fixed plate body with a set of piping and the outside projection of one end,And the sleeve portion system in the aforementioned space of what couples fixed what first set rod piece or the second external member； One supports the surface of the projection of leverage one end coupling casing； One resistance leverage is set in the what casing； One second, which locks leverage, couples the one end for supporting bar； Wherein,Second set of rod piece can move freely in what groove,Drag strut can in what casing free extension it is mobile.一種農用機械之阻力結構，其係為與一機具本體耦接之一阻力裝置，而阻力裝置包含有一固定板體、一活動板組件與一活動桿組件，而固定板體為一端相互接合並兩側向外平行延伸之板件以形成一空間，而於前述該板件係分別設有一溝槽；活動板組件係具有一第一套桿件係穿設於該固定板體之兩側；一第二套桿件係穿設固定板體之溝槽；一搖臂板體係設於該固定板體之一側並連接第一套桿件與第二套桿件；一第一鎖附桿係對應設於該搖臂板體之固定板體之另一側，而活動桿組件具有一套管係設於固定板體之空間中且其一端向外突伸，而於前述該空間中的該套管部分係耦接固定於第一套桿件或第二套件；一抵頂桿係一端耦接套管之該突伸的表面；一阻力桿係設於該套管中；一第二鎖附桿係耦接該抵頂桿之一端；其中，第二套桿件可於溝槽中自由移動，阻力桿可於套管中自由伸縮移動。
