Marine fender

摘要

This invention relates to a marine fender being low and uniform in the compression surface pressure and excellent in the wear characteristics, and more particularly to a marine fender comprising a shock receiving portion 2 inclusive of a shock receiving resin board 4 and a pair of rubbery leg portions 3 disposed on the downside of the shock receiving portion 2 in a height direction of the fender, characterized in that a width W (mm) of the shock receiving portion 2 and a height H (mm) of the fender 1 satisfy a relation of the following equation (1);
2H≦W  (1)
and a thickness h1 (mm) of the shock receiving portion, a height h2 (mm) of the leg portion, a thickness t (mm) of the leg portion and a height H (mm) of the fender satisfy a relation of the following equation (2);
h2/4≦t≦h1≦H/2≦h2  (2).

主权项

1. A marine fender comprising a shock receiving portion including a shock receiving board made from a resin and a pair of rubbery leg portions disposed on the downside of the shock receiving portion in a height direction of the fender, wherein a width W of the shock receiving portion and a height H of the fender satisfy a relation of the following equation (1):
2H≦W  (1) (wherein W is a width (mm) of the shock receiving portion and H is a height (mm) of the fender) and a thickness h1 of the shock receiving portion, a height h2 of the leg portion, a thickness t of the leg portion and a height H of the fender satisfy a relation of the following equation (2):
h2/4≦t≦h1≦H/2≦h2  (2) (wherein h1 is a thickness (mm) of the shock receiving portion, h2 is a height (mm) of the leg portion, t is a thickness (mm) of the leg portion and H is a height (mm) of the fender), the shock receiving portion further comprises a shock receiving board made from rubber disposed on the downside of the shock receiving resin board in the height direction of the fender, the shock receiving resin board has a yield stress Ep of 20-35 MPa, the shock receiving rubber board has a Young's modulus Er of 1.5-8 MPa, and the yield stress Ep of the shock receiving resin board and the Young's modulus Er of the shock receiving rubber board satisfy a relation of the following equation (3):
H/T1≦5×(Ep/Er)1/2  (3) (wherein H is a height (mm) of the fender, T1 is a thickness (mm) of the shock receiving resin board, Ep is a yield stress (MPa) of the shock receiving resin board, and Er is a Young's modulus (MPa) of the shock receiving rubber board).