| 摘要 |
PURPOSE:To improve safety by extending the cylinder rod at both sides through the ship load while automatizing the support of hull in the sea water. CONSTITUTION:At the low tide, the keel section 15 of hull will stretch over the receiving board 5 of main push-up cylinder 4 thereby the rod 2 of said cylinder 4 will lower against the resiliency of a spring 3 due to the load of the ship. Consequently the oil in the cylinder will flow into the left and right push-up cylinders 8a, 8b through a check valve thus to lift the rod 6 of said cylinders 8a, 8b against the resiliency of a spring 7. Consequently the seats 9, 9 at the upper end of the rod 6 will joint with the lower face at both sides of hull to support the hull automatically. |
