Main lifting device for tower crane

• Main Authors: MA TAO, ZHOU JIANFENG, YU ZHEN, XIE DAN, LIU ZUOGUANG, WANG MENG
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: CRANES; HAULING; HOISTING; LIFTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; PERFORMING OPERATIONS; TRANSPORTING

The utility model provides a main lifting device for a tower crane, which comprises a main crane arranged on a cabin, the main crane comprises a main base arranged on the cabin, a main lifting arm connected with the main base, a hydraulic cylinder connected with the main base and the main lifting arm, a lifting hook, a steel wire rope, a pulley block and a power unit; the main base comprises a fixed seat, a rotating seat and an adjusting seat which are sequentially arranged from bottom to top; the main lifting arm comprises a first end and a second end, the first end is movably connected with the adjusting seat, the hydraulic cylinder can drive the main lifting arm to rotate when stretching out and drawing back, and the second end is connected with the lifting hook; one end of the steel wire rope is connected with the lifting hook, and the other end is connected with the main lifting arm and bypasses the pulley block to be connected to the power unit which is suitable for tensioning or releasing the steel wir