The utility model provides a special industrial computer of single track gauging verification inspection vehicle of suspension type, the power distribution box comprises a box body, side plate, the display card, a power supply, mechanical hard disk, the mainboard, the bottom plate, the display card support bar, solid state hard drives, fan and holding screw, the power sets up on the box top, mechanical hard disk sets up in the power below, display card and mainboard setting are on the bottom plate, three display card support bar, solid state hard drives and fan setting are inside the box, solid state hard drives and fan are on two opposition sides of box inside, side plate, box and bottom formation enclosure space, with the display card, a power supply, mechanical hard disk, the mainboard, the bottom plate, the display card support bar, solid state hard drives, the fan is whole to be surrounded, the plastic width -lock type single -layer sealed packing case comprises a casin, the whole brass that adopt of case lid and bottom plate, stronger heat -sinking capability has, interior layout is compact, space utilization is high.