working principle
Both ends of the rocker arm are connected with the main water outlet of the water pump and the water delivery pipe fixed on the reinforced concrete support pier at the shore. The rocker arm is laid with steel water delivery pipes, cables are laid and used as a passageway for upper and lower traffic. The rocker arm is connected with the rocker arm base on the concrete support pier on the other end with the help of the rocker arm base on one end of the ship as a fulcrum. The two can rotate up and down to drive the rocker arm to move so that the hull can adapt to changes in water level and move vertically. , No need to replace the joint, to achieve the purpose of continuous water supply.
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