FIELD: crane track structures.
SUBSTANCE: invention relates to heavy-duty crane track structures. Proposed rail unit has main rail and two additional rails arranged symmetrical relative to main rail. Neck of each additional rail has horizontal section connected at one side with head of raid rail. Moreover, neck of said additional rail has vertical and inclined sections. Horizontal section of neck from other side changes into vertical section changing into said inclined section. Neck of each additional rail is provided with longitudinal grove following form of surface of main rail foot edge, being arranged in zone of conjugation of said of horizontal and vertical sections. Additional rails enclose main rail from two sides, engaging with main rail by said grooves and end faces of inclined sections arranged under head of main rail and inter connected by studs passing through their necks and of main rail forming two tubular loops.
EFFECT: increased strength of rail.
3 dwg
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