| 摘要 |
A springy pin jig for supporting blocks of a hull is provided to prevent accidents by setting elasticity of a coil spring same with a weight of a lift rod to inhibit the lift rod from rising suddenly. A springy pin jig(1) for supporting blocks of a hull includes a lower fixed pipe(10), a lift rod(20), and a coil spring(30). The lower fixed pipe includes support blades formed on exterior thereof in a radial shape. The lift rod is inserted in the lower fixed pipe, lifts up and down inside the lower fixed pipe, and includes a support head(21) and pin holes(22). The support head is formed on a top of the lift rod. The pin holes are formed on exterior of the lift rod. The coil spring is installed in the lower fixed pipe and is pressed by the lift rod. Elasticity of the coil spring is set as 80~120% of a weight of the lift rod when the lift rod lifts down to a lowest point and is set as 40~60% of the weight of the lift rod when the lift rod lifts up to a top.
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