Door type fixture for assisting in cross welding of girder and framework material

Abstract

The invention provides a door type fixture for assisting in cross welding of a girder and a framework material. The fixture comprises door type lifting jaws, door type buckling jaws and wedge blocks,wherein each door type lifting jaw is provided with a folding hook; each door type buckling jaw is provided with a retaining arm; each door type lifting jaw is hinged to the corresponding door type buckling jaw; each folding jaw and the corresponding retaining arm form a clamping opening used for clamping the framework material; a limiting plate is arranged in a door opening formed by each pair ofdoor type lifting jaws and the door type buckling jaws; and each wedge block is inserted between the corresponding limiting plate and the girder. Based on the structure of the door type fixture for assisting in cross welding of the girder and the framework material, through the cooperation of the clamping openings and the wedge blocks, the gap between the girder and a surface plate is reduced andapproaches zero, the welding quality of the girder is improved, and the spot welding and diagonal bracing work is avoided; meanwhile, compared with the method in which a welding door type support device and a magnetic door type support device are adopted, the door type fixture has the advantages as follows: the installation and disassembly are simple and convenient, the connection is firm, the cost is lower, the welding efficiency is high, and the welding quality is good; besides, the fixture further has the advantages as follows: the safety is good, the labor intensity is low, the overall appearance is compact, the fixture can be used repeatedly for multiple times, the batch production is realized, the popularization is easy, and a high economics efficiency is achieved.

Description

technical field [0001] The invention relates to the technical field of ship welding equipment, in particular to a door-shaped fixture for cross-welding auxiliary girders and frames. Background technique [0002] In the current ship construction, in order to strengthen the strength of the hull structure, stiffeners are usually provided on the plate structure, which involves a large number of cross-welding of single girders and frames or cross-bars and frames. Among them, girders Generally, T-shaped materials are used, and the aggregates are generally made of bulbous flat steel. The cross-welding method of girders and stiffeners is as follows: first draw the installation position line of girders and stiffeners on the face plate, align the web side of girders and stiffeners with the installation position line, and make the web and face plate Vertically, then apply tack welding to the joint between the web of the frame and the face plate, and then weld the girders in the same w...

AI Technical Summary

Problems solved by technology

When the above method is used for cross assembly welding, after the frame is welded, there will be obvious wavy deformation in the face plate area of ​​the welded frame web, resulting in gaps of different sizes between the girder web and the face plate (according to On-site measurement feedback from the production department shows that the gap size is between 6 and 12mm. For details, please refer to figure 1 ), which further increases the welding difficulty of the girders, resulting in uneven weld size after welding of the girders, defects such as incomplete penetration, slag inclusions, and notch stress concentration in the welds, which seriously affect the welding quality of the girders and reduce the strength of the ribs. fatigue reliability

[0003] In order to prevent the above-mentioned welding deformation, the production department usually uses a welding door-shaped support device or a magnetic door-shaped support device to fix the skeleton. Although the welding door-shaped support device is easy to operate, the subsequent grinding work is labor-intensive and time-consuming. It is not enough; the method of using magnetic door-type support device to fix the frame is also not strong enough, and the cost is high

At the same time, multiple braces need to be spot-welded between the web and the face plate of the frame, but this method requires a series of processes such as line marking, alignment, vertical measurement, tack welding, and welding of braces. After the completion of the work, it is necessary to remove the diagonal braces and polish the weld scars, resulting in a waste of manpower and material resources

In addition, the diagonal brace will prevent continuous welding. Whether it is manual welding, semi-automatic welding with a trolley, or automatic welding with a robot arm, the welding cannot be completed continuously at one time. affect production efficiency

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