Automatic assembling and tack welding system for U-shaped rib plate units

Abstract

The invention discloses an automatic assembling and tack welding system for U-shaped rib plate units, which comprises a pair of parallel rails and a gantry, the gantry can move on the rails, and an assembling platform is laid between the two rails; the gantry comprises an upper crossbeam, a lower crossbeam, four uprights and two traveling beams, the upper crossbeam and the lower crossbeam are respectively fixed between the two front uprights, and one gantry-traveling mechanism is respectively arranged on the bottom of each of the two traveling beams; a movable welding system is arranged on the upper crossbeam; and a movable two-dimensional adjustable positioning and pressing system is arranged on the lower crossbeam. Because the two-dimensional adjustable positioning and pressing system is combined with a polishing and dedusting system and the robotic welding system, the polishing and dedusting of the area to be welded of the U-shaped rib plate units, the positioning and pressing of U-shaped ribs and robotic tack welding can be full-automatically controlled together, and the automatic assembling and tack welding system has the advantages that the assembly precision of the U-shaped ribs of orthotropic bridge plate units is high, the automatic assembly and production efficiency is high, and the quality of welding lines is stable.

Description

technical field [0001] The invention relates to the technical field of large-scale bridge steel structure welding, in particular to an automatic assembly and positioning welding system specially used for assembling and welding U-shaped rib plate units. Background technique [0002] Among the large-scale steel structure bridges in my country, there is a bridge called a box structure. Its structure is surrounded by steel structures along the bridge, and the middle is divided into sections by multi-layer diaphragms. The overall structure is like a giant The long box, so it is a box structure. The manufacturing process is to weld several plate units to form a bridge section, and then the bridge sections are butted, assembled and welded to form a whole steel structure of the bridge. The plate unit is the most basic structural unit of the box structure. There are several types of it, among which the very common one and the one that is difficult to manufacture is the U-shaped rib p...

AI Technical Summary

Problems solved by technology

For a long time, the U-shaped rib plate unit has been manufactured by manual assembly and welding with simple tooling. The problems of this production method are that the spacing accuracy of the U-shaped ribs is poor, and the parallelism between the U-shaped ribs is poor, which cannot ensure close contact with the panel.

At the same time, there are many problems such as low efficiency and high labor intensity. At the same time, the exposed rust removal method causes rust and dust to diffuse, making the working environment bad and many other problems.

Images