Team-forming welding production system for crane girder webs

Abstract

The invention relates to the field of crane bridge welding and manufacturing, in particular to a team-forming welding production system for crane girder webs. The team-forming welding production system comprises hanging beams, rotating plate frames and two portal frames, wherein the two portal frames comprise top beams, motor home sliding rails are arranged on the upper surfaces of the top beams,house type trolleys are mounted on the motor home sliding rails, and vertical hoisting mechanisms used for synchronously hoisting the hoisting beams are arranged in the two house type trolleys; robotsliding rails are arranged on the upper surfaces of the hanging beams, and assembly welding robots are mounted on the robot sliding rails; and two lifting lug boxes are symmetrically fixed to the twoends of the lower surfaces of the hinging beams, the inner sides of the bottom ends of the two lifting lug boxes are correspondingly and rotationally connected with the two ends of the rotating plateframes, and a plurality of magnetic attraction assemblies used for attracting the webs are evenly arranged on the lower surface of the rotating plate frames in the axial direction of the rotating plate frames. The team-forming welding production system can complete automatic welding of longitudinal welding seams between the webs and cover plates and welding seams between the webs and rib plates inthe vertical direction after the webs are rapidly and accurately hoisted and positioned.

Description

technical field [0001] The invention relates to the field of crane bridge welding manufacturing, in particular to a team welding production system for the web of the main girder of the crane. Background technique [0002] The main girder of the crane is generally a box structure. As the main load-bearing part of the whole machine, it is mainly composed of upper and lower cover plates, webs on both sides and ribs in the middle of the beam box; the welding sequence of the main girder is generally to first weld several The arranged ribs and the lower cover are welded and positioned, and then the webs are grouped through the fixture, and then the webs and the ribs, the webs and the cover are spot welded or broken welded for positioning, and the main girder internal welding is carried out for the next step Welding of the seam should be prepared; because the length of the web of the crane is long and it is a plate splicing structure, the plates of the main girder web need to be ta...

AI Technical Summary

Problems solved by technology

[0002] The main girder of the crane is generally a box structure. As the main load-bearing part of the whole machine, it is mainly composed of upper and lower cover plates, webs on both sides and ribs in the middle of the beam box; the welding sequence of the main girder is generally to first weld several The arranged ribs and the lower cover are welded and positioned, and then the webs are grouped through the fixture, and then the webs and the ribs, the webs and the cover are spot welded or broken welded for positioning, and the main girder internal welding is carried out for the next step Welding of the seam should be prepared; because the length of the web of the crane is long and it is a plate splicing structure, the plates of the main girder web need to be tailor-welded before assembly, and the tailor-welding station can ensure that the web is assembled The waviness after welding; however, when the tailor-welded web is welded together with the cover plate and rib plate, the existing production process needs to manually clamp the crane hook to the edge of one side of the web and lift it, so that the main girder The web is turned from flat to vertical state, which will easily cause plastic deformation of the web during the lifting process, which directly causes the wave degree of the web group to become worse after the pairing, which cannot meet the requirements. In addition, because the crane is manually controlled for lifting, Not only is the work efficiency low, but it is also difficult to guarantee the hoisting accuracy; more importantly, the current production process is spot welding after manual assembly. Due to the small operable space inside the main girder and the harsh manual welding environment, not only the welding quality and The welding accuracy cannot be guaranteed, and the welding efficiency is low, so that the entire bridge manufacturing process cannot achieve the goal of automatic and rapid production

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