Motor train unit power unit component hoisting supporting device and hoisting method

The invention discloses a motor train unit power unit component hoisting supporting device and a hoisting method, and relates to the field of rail transit vehicle converter installation. The hoisting supporting device comprises an insulating bidirectional supporting column, a bracket and a bracket fixing plate; the insulating bidirectional supporting column is cylindrical, a metal column body is arranged inside the insulating bidirectional supporting column, an insulating casting body is arranged outside the insulating bidirectional supporting column, a metal stud is fixedly connected to the head end of the metal column body, a hollow threaded hole is formed inside the tail end of the metal column body, and a nut is fixedly arranged; the support is in a rectangular plate shape, a plurality of kidney-shaped holes are formed in the middle of the support, and the left end and the right end of the support are each provided with a kidney-shaped hole. The support fixing plate comprises a horizontal part and a verti