Lattice boom for crawler crane, has lattice element whose longitudinal axis is oriented with working assembly, and width is greater than working assembly, so that transport of lattice element is less than maximum permissible mass

摘要

The lattice boom has a case which is provided with several lattice elements (13) which are arranged in each grid along longitudinal axes (12,14) of the lattice boom main portion. The lattice elements has a grating which is arranged perpendicular to the longitudinal axis (14) of the lattice element which is oriented with a working assembly, by which the width of the lattice element is greater than the width of the working assembly, such that transport of the lattice element in working arrangement is less than maximum permissible mass.