Can control cat ladder device of adjusting

The utility model provides a can control cat ladder device of adjusting realizes controlling of cat ladder and adjusts under the prerequisite that does not increase cat ladder device width to it equips to make flat -bed can transport the heavy of different tracks. The technical scheme of the utility model include that the cat ladder bears the weight of body, spring support, cat ladder spring, have strong market potential axle and otic placode, a level setting of having strong market potential, both ends set firmly an otic placode respectively, and two otic placodes are fixed on the frame tail boom, the cat ladder bears the body lower extreme and also is equipped with two otic placodes, respectively the cover establish have strong market potential epaxial, spring support is last to be equipped with a sleeve, the cover establish the cat ladder bear between two otic placodes of body lower extreme have strong market potential epaxial, the cat ladder bears the body and spring support can follow the axle slip of having strong market potential, this body coupling is born the weight of with the cat ladder in cat ladder spring upper end, and the lower extreme is fixed on spring support.