In a stressed-skin construction been convicted crane tray for use in a traveling crane

摘要

1,069,667. Overhead travelling cranes. BIURO STUDIOW I PROJEKTOW KONSTRUKCJI STALOWYCH " MOSTOSTAL ". Nov. 17, 1965 [Nov. 21, 1964], No. 48945/65. Heading B8B. The crab 9 of an overhead travelling crane runs on rails 8 supported by a beam 2 of hollow construction stiffened by transverse and longitudinal ribs 3, 4. Inside the beam are passages 11 for servicing the crane and supports 12 for ropes.