NZ707273A - Boom apparatus with nose body - Google Patents

Abstract

A boom apparatus is disclosed, having a clevis pin unit, a boom, and at least one flexible line extending longitudinally of the boom. The boom comprises a first boom side wall, a second boom side wall spaced apart from the first boom side wall laterally of the boom, a top wall, a bottom wall spaced apart from the top wall. The top wall and the bottom wall interconnect the first boom side wall and the second boom side wall. The first boom side wall, the second boom side wall, the top wall, and the bottom wall cooperate to define a periphery of a box structure of the boom. The first boom side wall and the second boom side wall extending longitudinally of the boom beyond the box structure to provide respectively a first wall extension and a second wall extension. A monolithic nose body is positioned at a nose of the boom and the boom apparatus, the nose body attached to and sandwiched between the first and second wall extensions and attached to the top and bottom wails so as to close an end portion of the box structure. The monolithic structure may promote stress minimization and sharp-edge avoidance. The nose body and the first and second wall extensions receive therein the clevis pin unit such that the nose body, the first and second wall extensions, and the clevis pin unit are included in a clevis of the boom apparatus for suspension of a work tool therefrom, the nose body comprising a passageway through which the at least one flexible line is routed. Since the at least one flexible line is routed through the passageway, it does not hang down as it passes through the nose to a work tool attached to the nose. The passageway thus may promote protection of the at least one flexible line against vulnerability to damage and may provide an aesthetically pleasing, clean appearance in the nose area of the boom. Routing of the at least one flexible line through the passageway may further promote simplification of the routing through the nose.