Jacking device for steel truss bridge closure

• Main Authors: ZHAO YUHONG, ZHU XIUFU, XIAO QIANZHEN, ZHANG WENXUE, CHEN ZHI, XU BUQI, WU DAOHONG, ZHANG XUEWEN
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2019
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a jacking device for a steel truss bridge closure. The jacking device for the steel truss bridge closure comprises two counter-force seat assemblies and a jacking drive jackedbetween the two counter-force seat assemblies; and each counter-force seat assembly comprises two clamping seat which are mutually connected, and clamping surfaces are arranged between the clamping seats. According to the jacking device for the steel truss bridge closure, jacking force of the jacking drive is resisted by friction counter-force generated between the clamping seats and upper chords,and the adjustment of a longitudinal deviation of the upper chords on the two sides of the closure opening position is realized for assisting the closure; the counter-force seat assemblies of the jacking device are simple in structure, convenient to install, easy to disassemble, and can be reutilized; and a lot of negative influences of traditional welding counter-force seats on a steel beam areovercome, and the damage of