Fanless heat pipe heat conduction device of 3U electronic equipment for railway locomotive

The invention relates to the technical field of mechanical equipment, in particular to a fanless heat pipe heat conduction device of 3U electronic equipment for a railway locomotive, and the heat dissipation effect of the device is improved. The use stability of the device is improved; comprising an extraction box, an inner end and an outer end, and the outer end and the inner end are fixed through screws; the inner end comprises a large circuit board, a small circuit board, a support, a heat conduction frame, a heat conduction block and a cooling fin, the large circuit board is installed on the extraction box, heating electronic elements are installed on the small circuit board, the element with the maximum heating value is attached to the heat conduction block after being coated with heat conduction silicone grease, and other heating elements are attached to the heat conduction frame into a whole after being attached to heat conduction silicone pads. The large circuit board, the support, the small circuit b