| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the inclination movement of suspension bolts by nut fastening, prevent the loosening of nuts by compressing spring washers normally, enhance fastening reliability so as to prevent the falling down of a vessel without causing the strength deterioration of suspension bolts, and further reduce cost. SOLUTION: A suspension base 27 made of a main plate and down-bent plate 29 formed by bending downward from both side edges of the main plate is fastened onto the top face of the closed vessel 1, L-shaped long holes 32 are formed in the front side and the rear side of the bending portion of the main plate and both down- bent plates 29, and engaging bodies 36 are formed at the lower ends of the suspension bolts 33 whose lower ends are inserted in the respective long holes 32. Falling-out prevention bodies are provided on the suspension bolts 33 in the vicinity of a main plate above the main plate, the top face of the up-bent plate 30 of the suspension base 27 is brought into contact with the bottom face of the arm 23 of a pole 22, the upper end portions of the suspension bolts 33 are interposed into the through holes in both end portions of the right and left direction seat plates 40, the seat plates 40 are brought into contact with the top face of the arm 23, and nuts 25 are screwed onto the upper end portions of the respective suspension bolts 33 and are fastened. |
