The utility model discloses a box
transformer substation replacing and lifting sling for
wind power operation and maintenance. The box
transformer substation replacing and lifting sling comprises a supporting mechanism, a
winch, a suspension mechanism and a box
transformer substation connecting mechanism. The supporting mechanism is fixedly arranged at the top end of the fan main rack, the suspension mechanism is erected at the front end of the supporting mechanism, the bottom end of the box transformer substation connecting mechanism is connected with a to-be-replaced box transformer substation, and the
winch is connected with the suspension mechanism through a traction
rope so that traction of the box transformer substation connecting mechanism can be achieved. The box transformer substation is formed by assembling a plurality of components, and the
single component is small in size, light in weight, easy to assemble, large in
bearing capacity and suitable for box transformer substation replacement of windmills in different environments. The supporting mechanism is integrally assembled in a
windmill case, the suspension mechanism adopts a multi-
pulley guiding labor-saving structure, is matched with the box transformer substation connecting mechanism for use, and is dragged through a
winch, so that the box transformer substation lifting effect can be achieved by adopting minimum force, and compared with a lifting crane, the device saves cost, is not limited by site space, saves time and labor, and is wider in application range; and the
windmill maintenance efficiency is improved.