METHOD OF AND DEVICE FOR MOUNTING TOWER CRANE SECTIONAL BOOM Russian patent published in 2005 - IPC

FIELD: mechanical engineering; tower cranes.

SUBSTANCE: according to proposed method of mounting, first part of boom assembled of sections is placed separately on mounting platform with first part of guy system placed on boom part in pre-mounting position, then mounting tie-rod is placed and is connected by one end with end of first part of boom, and by second end, with links of said part of guy system, then first part of boom is lifted for connection of boom and first part of guy system with head. Then first section of boom is lowered to tensioning of mounting tie-rod. Second part of boom is assembled on mounting platform and second part of guy system is placed on boom part, after which second part of boom with fitted-on second part of guy system is lifted. Second part of boom is lifted with inclination to side of head. Then second part of boom is hinge-connected with part of boom by connecting upper adjacent members of these parts, free ends of first and second parts of guy system are interconnected, and second part of boom is lowered to close butt-joined surfaces of first and second part of boom. In device for implementing the method using mounting tie-rod whose one end is coupled with end of first part of boom, hinge coupling of links of first part of guy system is made in form of sector with three holes, two of which are connected with links of first part of guy system, and third hole is coupled with second end of mounting tie-rod whose end connected with sector is provided with longitudinal slot for connecting member. Guy system made up of two parts is connected with second part of boom.

EFFECT: reduced labor input at mounting of sectional boom.

3 cl, 11 dwg