The invention discloses a tubular
bus connection structure, which is used for realizing
electrical conduction of incoming and outgoing lines of a switch cabinet after being inserted into a socket of the switch cabinet. The tubular
bus connection structure comprises a conductor connector, a tubular
bus, a
silicone rubber insulation member, a
fastener and a strain supporting member, wherein the conductor connector is fixedly connected to the top part of the tubular bus, and is used for being inserted into the socket of the switch cabinet so as to be electrically connected with conductors of the socket; the
silicone rubber insulation member sleeves the outer surface of a part between the portion (positioned below the conductor connector) of the tubular bus and the portion (positioned inside the switch cabinet) of the tubular bus when the tubular bus is in operation, and is used for carrying out insulation and
electrical isolation on the socket of the switch cabinet; the
fastener is mounted under the
silicone rubber insulation member, and is used for being fixedly connected with the switch cabinet when in operation; and the strain supporting member comprises a
metal force bearing ring and a semiconductive
silicone rubber ring covering the
metal force bearing ring. The tubular bus connection structure meets the development requirements for the through-flow performance and
miniaturization of the switch cabinet, and can
upgrade the rated current without changing the existing switching equipment.