Portable clamp assisting cross beam and longitudinal beam assembling and welding

Abstract

The invention provides a portable clamp assisting cross beam and longitudinal beam assembling and welding. The portable clamp comprises a supporting cross beam, a jack and clamping mechanisms. The supporting cross beam is arranged at the top end of the jack and is perpendicular to the jack. Each clamping mechanism comprises two hook claws provided with folding hooks, wherein the two hook claws arerotationally connected with the supporting cross beam, the two hooks claws are located on the two sides of the jack correspondingly with the folding hooks opposite to each other, and a clamping opening used for clamping a T-shaped material is formed between the two hook claws. Based on the above structure, the clearance between a longitudinal beam and a panel can be reduced through the clamp, theclearance tends to be zero, and the welding quality of the longitudinal beam is improved; meanwhile, welding work continuity is not affected by the clamp, work of a welding robot is facilitated, in addition, work such as manufacturing, demounting and bracing piece supporting can also be omitted, the welding efficiency is improved, and cost is saved; and furthermore, the clamp is easy to operate,good in safety, low in labor intensity, compact in overall appearance, capable of being repeatedly used multiple times, capable of being produced in a batched manner and easy to popularize and has very high economical efficiency.

Description

technical field [0001] The invention relates to the technical field of ship welding equipment, in particular to a portable fixture for assisting the welding of transverse and longitudinal beams. Background technique [0002] In the current ship construction, most of the beams and longitudinal beams on the ship sections adopt T-shaped structure, and the two generally adopt the method of cross assembly welding for installation: first draw the installation position lines of the beams and longitudinal beams on the panel, and then The web side of the beam and the longitudinal beam is aligned with the installation position line, and the web is perpendicular to the panel, and then the joint between the web of the beam and the panel is fixed by tack welding, and then the longitudinal beam is welded in the same way . When the above method is used for cross assembly welding, after the beam is welded, the panel area of ​​the welded beam web will have obvious wavy deformation, resultin...

AI Technical Summary

Problems solved by technology

When the above method is used for cross assembly welding, after the beam is welded, the panel area of ​​the welded beam web will have obvious wavy deformation, resulting in gaps of different sizes between the longitudinal beam web and the panel (according to the production department On-site measurement feedback shows that the gap size is between 6 and 12mm. For details, please refer to figure 2 ), which further increases the welding difficulty of the longitudinal beam, resulting in uneven weld size after welding of the longitudinal beam, defects such as incomplete penetration, slag inclusion, and notch stress concentration in the weld, which seriously affects the welding quality of the longitudinal beam and reduces the beam structure. fatigue reliability

[0003] In order to prevent the above-mentioned welding deformation, the production department usually spot-welds multiple braces between the beam web and the face plate, but this method requires a series of processes such as scribing, aligning, measuring verticality, performing tack welding, and welding braces. After the T-shaped bar is assembled and welded, 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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