Top adjusting and mounting method of electrical cabinet coaming of rail vehicle

The invention discloses a top adjusting and mounting method of an electrical cabinet coaming of a rail vehicle. The method comprises the following steps that a vertical guide shaft is inserted into a coaming frame top connecting hole, and the two ends of a spring abut against a horizontal folding edge of a base and a coaming frame top respectively; the base is pressed down to enable the spring to be compressed, and when a first positioning pin hole is aligned at a coaming frame top pin hole, a positioning pin is inserted into the first positioning pin hole and the coaming frame top pin hole at the same time, and at the moment, the spring is in the large compression state; the coaming position adjustment is carried out, after the coaming is mounted to be in place, the positioning pin is pulled out, and the base pops up under the effect of the spring and abuts against a vehicle top plate, and at the moment, the spring is in the small compression state; the base and a vehicle top plate are connected through a screw, and the positioning pin is inserted into a second pin hole and the coaming frame top pin hole; and a rotation panel is rotated, a gluing buckle is buckled, and the rotation panel shelters the first positioning hole and the second positioning pin hole. The mounting method is simple, the production efficiency is high, and the mounting quality is good.