A watertight fittings that is used for power station hydraulic hoist machine and roofing clearance

The utility model provides a watertight fittings that is used for power station hydraulic hoist machine and roofing clearance, includes waterproof apron, the roof hole site of waterproof apron settingon room roof platform is put, is equipped with first through -hole and second through -hole on the waterproof apron, all is equipped with sealed the pad on first through -hole and the second through-hole lateral wall. In the preferred scheme, waterproof apron be bottom surface open -ended rectangular structure, the horizontal section size of inner chamber of waterproof apron is greater than thehorizontal section size in roof hole, the waterproof cover lid is established on the roof hole. Adopt above -mentioned structure, can effectively solve the sealed problem of the part that the hydro -cylinder passed on the headstock gear roof, avoid opening and close computer lab rain leakage. 种用于水电站液压启闭机与屋面间隙的防水装置，包括防水盖板，防水盖板设置在屋顶平台上的屋顶孔位置，防水盖板上设有第通孔和第二通孔，第通孔和第二通孔侧壁上均设有密封垫。优选的方案中，所述的防水盖板为底面开口的矩形体结构，防水盖板的内腔水平截面尺寸大于屋顶孔的水平截面尺寸