Cabin door lifting device

A hatch door lifting device is used for lifting a hatch door of an aircraft and comprises a connecting piece, one end of the connecting piece is movably connected to a door frame of the hatch door, and the connecting piece extends to a door body structure of the hatch door in the vertical direction; the driving shaft is hinged to the door body structure so as to rotate relative to the door body structure; and cranks which are fixed on the drive shaft to rotate together with the drive shaft, in which the connector includes a support portion and the cranks include a contact portion, the connector and the drive shaft being arranged such that the contact portion contacts the support portion and is supported by the support portion by rotating the drive shaft. 一种舱门提升装置，用于提升飞机的舱门，该装置包括连接件，该连接件在一端处可运动地连接于舱门的门框，并且沿竖直方向延伸至舱门的门体结构；驱动轴，该驱动轴铰接在门体结构上，以能够相对于门体结构旋转；以及曲柄，这些曲柄固定在驱动轴上，以与驱动轴一起旋转，其中连接件包括支承部分，并且所述曲柄包括接触部分，连接件和驱动轴布置成能够通过使驱动轴旋转来使接触部分接触支承部分并由支承部分支承。