Hollow intensive bus duct

The invention discloses a hollow intensive bus duct which comprises an upper mounting seat, a lower mounting seat, two middle seats and a plurality of electrified parts, the top of each electrified part is provided with an upper clamping block, the bottom of each electrified part is provided with a lower clamping block, the upper mounting seat is internally provided with an upper clamping groove matched with the upper clamping block, and the lower mounting seat is internally provided with a lower clamping groove matched with the lower clamping block. A spring is arranged in the lower clamping groove, the live part can be installed between the corresponding upper clamping groove and the lower clamping groove between the upper installation base and the lower installation base according to requirements, the spring is arranged in the lower clamping groove, on one hand, the damping effect is achieved for installation of the live part, and on the other hand, installation of the live part is more flexible. The first