The invention relates to a hoisting rope arrangement in a trolley (2) moving along a main girder (1 ) of a crane and driven by an outside mechanism, both sides of the trolley being provided with successive rope pulley pairs (3, 4) located at a distance from one another in a longitudinal direction of the trolley and, below these, sheaves (6) situated in a hoisting member (5), whereby on both sides of the trolley, a first hoisting rope (7) is led from a first end of the main girder of the crane via one rope pulley (3a) of a first rope pulley pair (3) down to the sheave (6) and therefrom via an other rope pulley (3b) to a second end of the main girder, and a second hoisting rope (8) is led from the second end of the main girder (1 ) via one rope pulley (4a) of a second rope pulley pair (4) down to the sheave (6) and therefrom via an other rope pulley (4b) to the first end of the main girder. The arrangement employs rope pulley pairs which comprise differently sized rope pulleys but which are mounted in successive fastening points of the trolley such that they are reversed in relation to one another and such that in successive pulley pairs the differently sized rope pulleys are aligned with one another as viewed in the longitudinal direction of the trolley.
Hoisting rope arrangement in crane trolley
2016-03-24
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |