A kind of connection device of agricultural machinery carrier and tenderizer,The screed units include that the two sides of a main tenderizer are respectively equipped with permeable one secondary oil hydraulic cylinder driving and the collapsible secondary tenderizer with flattening,And the main tenderizer is fixed on pivot and consolidates at the connecting rod base lower end that is lifted at arm outboard end,Right Hou enables the upper end of the connecting rod base and the main oil pressure cylinder on the solid connection what carrier of pivot,The inner end for lifting arm simultaneously is then first and one end pivot of bar axis is solid together,It enables bar axis wear conjunction pivot again to consolidate in pivot conjunction seat set on what carrier,Allow lift arm in addition to can pass through main oil pressure cylinder drive and go up,Other than lower swing,It can more be rotated centered on shaft,And then when screed units carry out seamless to rough farmland,The fluctuating effect of different height at left and right sides of screed units is caused,Cause to lift the torsion phenomenon that arm occurs,Can pass through the shaft is freely rotated ability,Allow lift arm can with torsion,Making, which can avoid, lifts being easily damaged for arm and carrier articulated section.一種農機載具與整平器的連結裝置，該整平單元包括一主整平器的兩側分別設有可透過一副油壓缸驅動而可折收與展平的副整平器，且該主整平器被固定在樞固於舉臂外側端處的連桿座下端處，然後令該連桿座的上端又樞固一連結於載具上的主油壓缸，同時舉臂的內側端則是先與桿軸的一端樞固在一起，再令桿軸穿合樞固於載具上所設的樞合座中，讓舉臂除了可透過主油壓缸的驅使而上、下擺動以外，更可以軸桿為中心而做轉動，進而當整平單元對凹凸不平的農地進行整壓時，造成整平單元左右兩側不同高低的起伏作用，導致舉臂發生的扭轉現象，即可透過該軸桿的自由轉動能力，讓舉臂能夠隨著扭轉，使可避免舉臂與載具樞接處的容易損壞。
