葛洲坝二号船闸下闸首人字门单扇重六百吨,顶部有A、B拉杆锚固,下部以球型轴承和倒碗型轴瓦组成底枢支持闸门启闭转动。轴承和轴瓦之间有八条呈放射型、半径为5厘米的油槽供球面润滑。按设计规定采用2号二硫化钼锂基脂加20%机油调和,由DDB-36型 Gezhouba two locks under the gate of the first giantry gate single fan weight 600 tons, the top of the A, B rod anchorage, the lower part of the ball bearings and inverted bowl bearing bottom hinge support opening and closing the gate rotation. There are eight radial and radial oil grooves with a radius of 5 cm for ball lubrication between bearings and bushings. According to the design requirements using 2 # 2 molybdenum disulfide grease plus 20% oil reconcile by the DDB-36 type