Bridge type conducting bar

A bridge type conducting bar comprises a conducting bar body, threaded holes are symmetrically formed in the two sides of the conducting bar body, two installation pieces are symmetrically arranged below each threaded hole, threaded holes are formed in the upper surface of each installation piece, and the installation pieces and the conducting bar body are fixedly connected through bolts. Sliding grooves are formed in the upper surfaces of the two ends of the conducting bar, the sliding grooves are symmetrical about the threaded holes, and cavities protruding towards the two sides are formed in the bottom ends of the interiors of the sliding grooves; the two ends of the conducting bar are provided with protective sleeves, each protective sleeve is a rectangular box body with an opening in one end, the top of each protective sleeve is provided with a sliding block, the protective sleeves can move back and forth in the sliding grooves through the sliding blocks, and through the arrangement of the protective sle