The present invention relates to a leveling shaft structure of a towing machine, comprising a power carrier having a first pivoting end； a fixing base having a second pivoting end pivotally connected to the first pivoting end, The fixed seat is pivoted to the left and right of the power carrier； a flattening unit is pivotally connected to the fixed seat； a correcting unit is disposed on the power carrier, and the correcting unit is provided with two a lug, the two lugs are respectively fixed on two sides of the pivot rod, and the two lugs are respectively inserted into one of the upper and lower movement adjusting rods, and the other ends of the two adjusting rods are respectively coupled with a pushing member, The two pushing members respectively drive the two adjusting rods to move up and down. In this way, the power carrier or the leveling unit can be horizontally or tilted to match the ground to prevent the leveling unit from colliding into the soil and being damaged.本創作係關於一種拖曳機之整平軸心構造，包含有一動力載具設有一第一樞接端；一固定座，係設有一第二樞接端而樞接於該第一樞接端，使該固定座係相對於該動力載具左、右樞轉擺動；一整平單元，係樞接於該固定座；一校正單元，係設於該動力載具上，該校正單元設有二凸耳，該二凸耳分別固定於該樞桿之二側，又該二凸耳內分別穿入有上、下移動之一調整桿，該二調整桿之另一端分別結合有一推動件，該二推動件分別帶動該二調整桿上下移動。藉以使動力載具或整平單元可各自保持水平或配合地面傾斜，以避免整平單元撞擊到土裡而損壞。
