Built-in fracture solid-sealed polar pole type disconnecting switch

A built-in fracture solid-sealed polar pole type disconnecting switch belongs to the technical field of high-voltage switches and comprises an upper sleeve, a static conducting rod, a movable conducting rod, an integrated lower sleeve, a sector gear, a directional guide rail wheel, a main shaft crank arm, a spring seat, a power-assisted spring, a power-assisted guide rod, a pressure spring bowl and a switching-on and switching-off handle, by operating a closing and opening handle, when a pointer reaches a closing position, a main shaft rotates to drive a three-phase main shaft crank arm to rotate downwards at the same time, and a boosting spring releases energy to assist the operation, so that the operation is convenient and labor-saving until a spring seat is blocked by a closing limit; the fan-shaped gear rotates upwards to be meshed with the gear track and drive the insulating pull rod, the coaxial guide rod and the movable conducting rod to coaxially move upwards until the copper-tungsten alloy rod head o