Steel structure bridge truss welding tool and welding method

Abstract

The invention discloses a steel structure bridge truss welding tool and a welding method, and belongs to the field of welding. A welding seam is isolated from the outside by arranging an isolation heat preservation cover, on one hand, harm to workers caused by splashing generated in the welding process can be prevented, harmful gas is prevented from being diffused into outside air, and health of the workers and air environment are protected; and on the other hand, due to the isolation effect of the isolation heat preservation cover, high-temperature heat generated by welding is gathered in the isolation heat preservation cover, so that the cooling speed of the welding seam is reduced, cracks are effectively reduced, the isolation heat preservation cover is adsorbed to a steel frame through a connecting layer, an elastic base body and a filling body can enable the isolation heat preservation cover to be in close contact with the steel frame, harmful gas passes through a gas channel according to the principle that hot air rises, purifying balls are used for filtering the harmful gas and then discharging the harmful gas, the harmful gas is prevented from being inhaled by the workers in a large amount, internal heat is slowly released to the outside through a heat dissipation piece, and the cooling speed of the welding seam is slowed down.

Description

technical field [0001] The invention relates to the field of welding, more specifically, to a steel structure bridge truss welding tool and a welding method. Background technique [0002] Truss bridges refer to bridges with trusses as the main load-bearing members of the superstructure. The truss bridge is generally composed of the main bridge frame, the upper and lower horizontal longitudinal connection systems, the bridge portal frame, the intermediate cross brace and the bridge deck system. In the truss, the chord is the member that makes up the periphery of the truss, including the upper chord and the lower chord. The member connecting the upper and lower chords is called the web, which is divided into oblique and vertical according to the direction of the web. The plane where the chord and the web are located is called the main truss plane. The bridge height of the long-span bridge changes along the span direction to form a curved chord truss; the medium and small spa...

AI Technical Summary

Problems solved by technology

[0004] The welding of bridge truss is to weld two steel frames together. The current welding equipment is very simple, mainly including welding equipment, protective cover and some auxiliary equipment, but the protective cover can only protect the head, which is harmful to the welding process. The gas cannot be prevented from being adsorbed by people, and the existing welding is exposed to the outside world, and the rapid cooling of the weld is easy to cause cracks, which affects the safety of the truss

Images