| 摘要 |
PURPOSE:To protect a strain gauge positively from ice pieces, by covering the strain gauge mounted on a screw blade of a ship with a metal plate, which is welded securely on the screw blade. CONSTITUTION:A metal base plate 17 having a through groove 18 is welded firmly on a screw blade 1. Then, a strain gauge 2 and a lead 20 thereof are housed in the through groove 18 and the strain gauge 2 is fixed on the blade face 1. Then, the through groove 18 is fitted with an epoxy resin to waterproof the strain gauge 2 and the lead 20. Then, the metal lid plate 19 is welded firmly over the metal base plate 17. Thus, as the strain gauge 2 is fixed securely on the face of the screw blade 1 with a prolonged weld line combining the metal base plate 17 and the metal lid plate 19, the strain gauge is protected from damage otherwise caused by ice piecesf hitting the screw. |
