Jack for steel truss girder upper chord member installation and steel truss girder upper chord member installation process

Abstract

The invention discloses a jack for steel truss girder upper chord member installation. The jack comprises a jack body. A connection plate is fixedly arranged on the bottom of the jack body and provided with two or more through holes matched with splice plate holes in a diagonal to be installed. A supporting part is arranged at the end of an ejection rod of the jack body. In use, the jack is installed on the steel truss diagonal in advance, the distance between rod members is set through the jack in advance, the jack carries out fine adjustment when chord members are hoisted, hole alignment is convenient, installation is easy and convenient, and the upper chord members can be installed fast. The invention further provides a steel truss girder upper chord member installation process. According to the process, the upper chord members can be installed fast, stress on the diagonal can be reduced, the weight is not increased in the installation process of the upper chord members, the high altitude operation time of workers is shortened in the installation process of the upper chord members, the risk of the workers is also lowered in the installation process of the upper chord members, and the assembly speed of the rod members is increased.

Description

technical field [0001] The invention relates to a jack for installing the upper chord of a steel truss girder and a process for installing the upper chord of the steel truss girder, which is suitable for the installation of the rods of the steel truss girder during the construction process, and uses a screw jack to lift the inclined rod to realize the upper chord The smooth installation. Background technique [0002] During the installation and construction of the upper chord of the steel truss girder, the conventional method is to use the guide chain for installation and positioning. The angles of the oblique rods, vertical rods and upper chords need to be adjusted continuously to be installed normally, especially when the oblique rods are under the action of their own weight. It will produce large downward deflection and horizontal displacement. The traditional solution is to use the guide chain to hang the oblique bar on the upper chord that has not been assembled in pl...

AI Technical Summary

Problems solved by technology

The installation and positioning process of the traditional guide beam is cumbersome. When the weight of the rod is large, the deflection changes greatly. The installation and debugging of the guide chain are cumbersome, which increases the lifting weight. There are many high-altitude operators and it is difficult to align the holes.

Images