Launching Roller圧縮試験について
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概要
- 論文の詳細を見る
Most of the launchings are usually carried out by heavy paraffin like grease, but often by the ball, the roller, or the truck for the economy of the launching work, the curtailment of the working days, and the man hours. The truck method, used often in the small vessel's launching, is restricted to its use because of weight-limit resulting from the increase of the launching weight. Until now the permissible launching weight for the roller launching has been limited to abnut 1,000 tons, but unknown in the case of more than 1,000 tons. The following compressive tests were made to investigate the allowable weight. One M. S. roller with welded seam or one S. G. P. roller. One S. G. P. roller or three S. G. P. rollers between the wooden cradle and the standing way. The results of the experiments are as follows;-The deformation of the S. G. P. tube is smaller than that of the M. S. tube. If they are the same S. G. P. tube, the smaller the diameter, the less the deformation. The deformation of the concreate way and the roller is almost the same and the mean value of the strain is 10×10^<-3> at the load 150kg/mm. The permitted durability of the wooden way is much smaller than that of the roller, as the yield load of the wooden way is 39-46kg/mm. The yield load of the concreate way is 123-154kg/mm, and that of the roller is 90-220kg/mm. The pressure load within about 200mm level under the launching way surface is almost uniform. Max pivoting pressure is to be determined as 50-70kg/mm.
- 社団法人日本船舶海洋工学会の論文
- 1968-02-29
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