SYSTEM OF CONNECTION FOR CRANE BOOM SEGMENTS Russian patent published in 2014 - IPC B66C23/64 

FIELD: transport.

SUBSTANCE: invention relates to hoisting cranes. Crane has the boom with the system of boom connection segments. Boom comprises at least one first and one second segments, each having a lengthwise axis and first and second ends. Note here that second end of first segment is connected with first end of second segment. First connector at first segment second end is connected with at least one second connector ay second segment first end. Every said connector has at least one extension with through hole. Said hole has axis perpendicular to said lengthwise axis and located in extensions so that all holes of connected first and second connectors are aligned at boom segments levelled. Connector has first connection surface while second connector has second connection surface engaged with first surface so that when first and second surfaces are fully engaged holes in extensions are aligned so that main pin can extend through the holes of all extensions at first and second connected connectors even if boom segments are not aligned. Connectors has thrust surface arranged so that when identical boom segments are arranged so that main pin can extend through the holes in extensions at some chords of boom segments, then thrust surfaces interact to align holes axes in extensions at other chords when thrust surfaces stay in contact.

EFFECT: fast connection of boom segments.

42 cl, 22 dwg