BRIDGE CRANE WITH BALANCING LOADS FOR SUPPORTS Russian patent published in 2002 - IPC

FIELD: mechanical engineering. SUBSTANCE: bridge crane has double-beam span construction mounted on end beams and load cart equipped with devices for moving load cart and for lifting load. Span construction has two metal H-beams of parabolic configuration. H-beams are fixed on horizontal shaft extending through mid potion of span construction and rest with their ends upon supporting tables through springs. Rollers are hung through brackets on load cart. H-beams are supported by these rollers so that one end of each H-beam is lifted while other end of this beam is lowered during advancement of load cart. EFFECT: higher efficiency by increased bearing capacity of crane members. 4 dwg