| 摘要 |
<p>A five sided steel box (1) with a honeycomb member therein formed of corrugated sheets (2) and defining a plurality of hexagonal elongate recesses. Spacers (11) on the outer faces of the walls of the box (1) have tie bars (18) secured transversely thereto and the ends of the tie bars (18) are welded to protective hoops (19). A door (26 or 51) closes and seals the box (1) and comprises a framework (27 or 67), a panel (38 or 52) mounted on the framework (27 or 67) by means of clamping screws (29) or scissor jacks (60) and coil springs (76) and a seal (25 or 55) between the panel (38 or 52) and the open side of the box (1). The framework (27 or 67) is preferably hinged to protective hoops (19) of the box (1) at one side and provided with a latch arrangement (79) at the other.</p> |
