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wo-way (or multi-way) movable support and one-way movable support of basin support are composed of upper roof (including roof and stainless steel slide), PTFE plate, intermediate steel plate, sealing ring, rubber plate, bottom basin, foot bolt and dust shield. The one-way movable support is also provided with a guide block along the moving direction. The fixed support is composed of upper top plate, sealing ring, rubber plate, bottom basin, foot bolt and dust shield. The replacement method of integral lifting bag lifting air bag is made of high quality rubber and bending strength steel cord cloth with abrasion resistance, aging resistance and fatigue resistance. The required operating space is very small, only 3 cm, the working pressure is small, the lifting force is large, and the operation is convenient. When the bearing is empty, the lifting air bag can be used to lift half or whole bridge smoothly, which makes the adjustment of the bearing simple and convenient. Two-way (or multi-way) movable support and one-way movable support of basin support are composed of upper roof (including roof and stainless steel slide), PTFE plate, intermediate steel plate, sealing ring, rubber plate, bottom basin, foot bolt and dust shield. The one-way movable support is also provided with a guide block along the moving direction. The fixed support is composed of upper top plate, sealing ring, rubber plate, bottom basin, foot bolt and dust shield. The replacement method of integral lifting bag lifting air bag is made of high quality rubber and bending strength steel cord cloth with abrasion resistance, aging resistance and fatigue resistance. The required operating space is very small, only 3 cm, the working pressure is small, the lifting force is large, and the operation is convenient. When the bearing is empty, the lifting air bag can be used to lift half or whole bridge smoothly, which makes the adjustment of the bearing simple and convenient.