Assembling an auxiliary lifting unit on a mobile crane

摘要

The invention relates to an assembly system for a mobile crane auxiliary lifting unit comprising auxiliary lifting unit assembly fastenings which are coupled to the auxiliary lifting unit and serve to fasten the auxiliary lifting unit to the crane, and comprising an assembly unit which can move the auxiliary lifting unit assembly fastenings into an assembly position. It also relates to an assembly installation for a mobile crane auxiliary lifting unit, comprising such an assembly system and comprising a sub-structure. A footing support for a mobile crane auxiliary lifting unit and a method for assembling a mobile crane auxiliary lifting unit are also disclosed.

主权项

1. An assembly system for an auxiliary lifting unit of a mobile crane, the assembly system comprising:
an auxiliary lifting unit frame; auxiliary lifting unit assembly fastenings coupled to the auxiliary lifting unit frame, the auxiliary lifting unit assembly fastenings adapted to fasten the auxiliary lifting unit frame to an upper structure of the mobile crane; and an assembly unit being different from a counterweight lifting unit designed to move counterweights of the mobile crane, wherein the assembly unit is coupled to the auxiliary lifting unit assembly fastenings and to a support base that is configured to be placed on a counterweight element, wherein the assembly unit comprises at least one piston-cylinder unit configured to move the auxiliary lifting unit frame away from the support base towards the upper structure of the mobile crane without moving the counterweight lifting unit so as to allow the auxiliary lifting unit frame to be fastened to the upper structure, and wherein the at least one piston cylinder unit is configured to pull the support base off the counterweight element towards the auxiliary lifting unit frame being fastened to the upper structure so as to free the support base from the counterweight element.