Wall bushing subassembly

The utility model provides a wall bushing subassembly, wall bushing subassembly include sleeve pipe, closing cap the flange of sleeve pipe both ends tip and with the conducting rod of the coaxial setting of sleeve pipe, the conducting rod has the conducting rod of wearing out and wears out the section in the conducting rod perforation of following flange, flange's sheathed tube dorsad one side isequipped with the stretching device who is used for the axial tension conducting rod, and wall bushing subassembly still covers with the end seal that stretching device covers including establishing including the sealed section of wearing out the conducting rod on being fixed in flange, the end seal cover has the water conservancy diversion spare of deriving the electric current on the conductingrod, the flexible electrically conductive connection structure of axial elastic support between section and the water conservancy diversion spare is worn out to the conducting rod. The electrically conductive connection struct