The utility model discloses an equipment that lifts by crane of power equipment maintenance usefulness, be the crossbeam of U type, the left chain block on setting upper portion on the left of the crossbeam, the right chain block who sets up on crossbeam right side upper portion, the manual elevating system who sets up at top of electric pole, set up enclasping mechanism and the lifting machine structure of setting on the crossbeam in crossbeam right -hand member both sides including the cross section, the top of electric pole's that manual elevating system established in power equipment both sides including the cover toper end cap, cover are established at the annular pressing block at toper end cap middle part, are set up at inboard rope of annular pressing block and the last chain block who sets up at the rope lower extreme, and the annular pressing block internal surface is the conical surface matched with taper surface with the toper end cap, the crossbeam right -hand member sets up the link, hangs the balancing weight on the link. The utility model discloses need not expend electric energy and fuel, only need manual operation just can accomplish the hoist and mount work of miniature transformer, the transportation of not only being convenient for is carried, has effectively reduced transformer hoist and mount expense in addition.