Integrally-cast solid insulation grounding device

The invention belongs to the field of electrics, and discloses an integrally-cast solid insulation grounding device, which comprises a duplex sleeve and a grounding control module connected with the duplex sleeve. The duplex sleeve comprises an inner core conduction column and an insulating shell cast on the periphery of the inner core conduction column. One end of the duplex sleeve is connected with an incoming line/outgoing line, and the other end of the duplex sleeve is connected with a ring main unit load switch or an isolating switch. The grounding control module comprises a grounding fixed contact, a grounding chamber and a grounding conduction column. The grounding conduction column can axially move, and is in insertion and extraction connection with the grounding fixed contact. Natural air is taken as an insulating medium as usual, and the conventional solid insulation casting technology is combined, so that a grounding switch implemented by the grounding control module and the sleeve connected with t