METHOD OF PROTECTION AGAINST COLLAPSE OF CRANE AND EAVES GIRDERS Russian patent published in 2018 - IPC B66C7/00 

FIELD: construction.

SUBSTANCE: invention relates to a method of protection against collapse and increase the technical resource and endurance of crane girders. Crane girders perform two-span and more, the cross section of each span of each of the girders perform on the profile figures "8" of a pair of oval, shock-absorbing profiles with the ratio of the height of the section to the width of each of the pair of oval profiles n = h : b = 3, where h is the larger, vertical size of each of the pair of oval profiles of the section; b – its smaller horizontal size. Oval profiles are connected by paired leaf linings on a smooth curve with the help of a frictional joint on high-life alloyed hairpins. Tighten the connection is performed with the estimated torque M_Tr. Dynamics of the effects of the wheels of bridge cranes are quenched by the shock-absorbing cross-sectional shape "8" of each crane girder.

EFFECT: minimization of collapse and increase of the technical resource of farms is achieved.

1 cl, 5 dwg, 1 tbl