RU95112198A - High-rigidity profile - Google Patents

Abstract

FIELD: production of cold-bent sheet rolled products with periodical corrugations, in particular, for telescopic boom of crane truck. SUBSTANCE: high-rigidity profile manufactured from steel with yield limit of $$$ = 265-500 MPa has closed transverse corrugations and flange adjoining edge portion and having height equal to profile thickness. Corrugations have round portions of equal radii at bases and apexes in transverse and longitudinal sections. Basic geometrical parameters of profile are determined by ratio L : B, $$$ = (1.2-1.5) 10 $$$, where l, B and H are length, width and height of corrugations; L is axial space between corrugations. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation.

Claims (1)

Профиль высокой жесткости из стали, с пределом текучести σ_т = 265...500 МПа, содержащий замкнутые поперечные гофры, отличающийся тем, что он дополнительно содержит околокромочные отбортовки с высотой, равной толщине профиля, а гофры выполнены с равными радиусами закруглений у оснований и вершин гофров в поперечном и продольном сечениях, при этом основные геометрические параметры профиля определены из следующих соотношений:

где l, B и Н - соответственно длина, ширина и высота гофров;
L - расстояние между их осями.High stiffness profile made of steel, with yield strength σ _t = 265 ... 500 MPa, containing closed transverse corrugations, characterized in that it additionally contains near-edge flanges with a height equal to the thickness of the profile, and the corrugations are made with equal radii of curvature at the bases and corrugated vertices in cross and longitudinal sections, while the main geometric profile parameters are determined from the following relationships:

where l, B and H are the length, width and height of the corrugations, respectively;
L is the distance between their axes.