Abstract
In the article consider questions of strained condition the frontal surface of a rope drum
lifting machine. The frontal surface of rope drum carry considerable loads because it gear force of
compression from surface a drum on support – shalt or axle.
For calculations the frontal surface use the theory of plate, tape calculations durable of the
frontal surface.
We tape more precise calculations of the frontal surface from take into consideration of
change strain rope. According to receipt formulas tape calculation of the frontal surface the concrete drum and receipt strains in frontal surface. Tape calculation show what active strains very
insignificant and mounting of elements of hard, so as ribs have not sense.