Downwards-rotating square tube locating mechanism applied to tower crane cargo boom tool

• Main Authors: ZHU YANSHENG, PAN YOUJIE, ZHANG WEIDONG, JIANG CHAO, ZHI YOUWEI
• Format: Patent
• Language: Chinese; English
• Published: 11.09.2013
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The utility model relates to a downwards-rotating square tube locating mechanism applied to a tower crane cargo boom tool. The downwards-rotating square tube locating mechanism is characterized in that the downwards-rotating square tube locating mechanism is fixed on a horizontal frame platform (1) and comprises a downwards-rotating square tube locating support (4) and a jacking device (16). The downwards-rotating square tube locating support (4) is composed of a base (9), a left lateral plate (10), a right lateral plate (11), pin shafts (12) and a supporting plate (13), the left lateral plate (10) and the right lateral plate (11) are respectively provided with a horizontal groove (14), upward openings (15) are formed in the left lateral plate (10) and the right lateral plate (11), and the pin shafts (12) are inlaid into the horizontal grooves (14) through the upward openings (15). The jacking device (16) fixed on the base (9) is used for jacking a downwards-rotating square tube from the bottom face, a thread