Device and method for inversely installing large bolt in narrow space

The large bolt inversion device in the narrow space comprises a rotor, a nut containing groove is formed in the rotor, the shape of the nut containing groove is matched with that of a nut, the rotor is installed on a stator, and the stator is composed of an axial upper coil, an axial lower coil, a radial suspension coil and a rotary driving coil. The stator and the rotor form a suspension thrust bearing, a radial guide bearing and a rotating motor. The problems that time and labor are wasted and the success rate is low when a large bolt is installed in a narrow space are solved. 一种狭小空间内大型螺栓倒装装置及倒装方法，包括转子，转子上设有螺帽放置槽，螺帽放置槽的形状与螺帽相适配，转子安装在定子上，定子由轴向上线圈、轴向下线圈、径向悬浮线圈和旋转驱动线圈构成，定子与转子构成了悬浮推力轴承、径向导轴承和旋转电机。本发明解决大型螺栓在狭小空间内安装费时费力、成功率低的问题。