Determining stresses in the metallic structure of an overhead crane when using running wheels of the new design

This paper proposes a method to experimentally study the stressed state of metallic structure an overhead crane when using running wheels different designs. The employed functioning electric, supporting, double-girder with capacity 5 tons and run 22.5 m. Strain gauges assembled in semi-bridge circuit connected analog-digital converter Zetlab210 (Russia) were used determine girder deformations at time hoisting moving cargoes masses. cargo was lifted displaced under same conditions, on regular trolley elastic rubber insert. deformation diagrams constructed. subsequent recalculation produced state's dependences each point movement both Also established duration oscillations that occur over cycle lifting moving. experimental included far-left position by trolley, far-right position, returning its original position.
 It should be noted application new, modernized design insert effectively dampen crane.
 study's results helped establish 18 % reduction stresses crane, as well decrease peak vibrations, 20 seconds, cycles In addition, reduces period oscillation damping end movement, least 30 %.