UNIVERSAL COLLAPSIBLE MOBILE GANTRY CRANE AT CRANE TRESTLE Russian patent published in 2014 - IPC B66C19/00 

FIELD: transport.

SUBSTANCE: invention relates to machine building, namely, to gantry cranes. Gantry crane consists of collapsible bridge crane with movable hoist assembled in integral boom from several tubular, carcass, tee or other sections, each having connectors at their ends, bearing props on rail wheels braced at their bases in pairs converging to bridge structure to be secured thereto by studs in lugs, clamps, bolts and nuts arranged at top ends. Bearing props consist of two parts joined together to overlap or telescopically by appropriate fasteners and retainers. Crane trestle consists of vertical props with nuts or unions welded in their ends and screw supports and thrusts screwed in at lower part to support lengthwise and crosswise beams with rails arranged on horizontal lengthwise and crosswise beams secured thereto by clamps.

EFFECT: expanded applications.