Double-sided double-pendulum blind-zone-free welding tractor and welding method thereof

Abstract

The invention discloses a double-sided double-pendulum blind-zone-free welding tractor. The double-sided double-pendulum blind-zone-free welding tractor comprises a rail climbing device, a welding device, a monitoring device used for monitoring and regulating welding parameters in real time and a linear rail arranged on flat-bulb steel (1), wherein the welding device and the monitoring device are mounted on the rail climbing device. The invention discloses a method for welding T-shaped vertical angle welding seams. The double-sided double-pendulum blind-zone-free welding tractor and the welding method thereof are high in welding efficiency and high in quality of welding seams.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a double-sided double-pendulum non-blind-zone welding trolley used for vertical welding of T-shaped fillet welds of closed spherical flat steel at both ends of a ship and a welding method thereof. Background technique [0002] Such as figure 1 As shown, after the superstructure of the hull is fully closed, the flat bulb steel 1 and the vertical hull steel plate 36 form a T-shaped vertical fillet weld, and the vertical fillet weld is generally welded by manual welding or an automatic welding trolley. Manual welding can only use hand-held welding guns to move and heat and cool slowly. The welding results have low welding efficiency, poor welding quality, low first pass rate of ultrasonic welding of fillet welds, high repair costs, more labor input, and high labor intensity. , long production cycle and other defects. The automatic welding trolley solves the above ...

AI Technical Summary

Problems solved by technology

When welding with a single-sided welding trolley, there are two problems: one is single-sided welding, which has low efficiency, and the other is that the workpiece is prone to deformation due to uneven heating on both sides of the reinforcing rib of the bulbous flat steel, which affects the welding quality; The surface welding trolley can weld both sides of the T-shaped fillet weld at the same time, avoiding welding deformation and improving welding efficiency

However, the double-sided automatic welding trolley of the prior art also has the following defects: for the T-shaped fillet welds of spherical flat steel with two ends closed, since the welding torch of the automatic welding trolley and the fuselage are relatively fixed, it is always at one end or both ends during the welding process. There is a large welding blind area at the end, and the weld can not be completely welded at one time, which leads to an excessively large one-time welding blind area, and the secondary welding welding machine is time-consuming and laborious, reducing work efficiency and affecting welding quality.

For T-shaped fillet welds of bulbous flat steel, the weld is generally welded on one or both sides by means of a welding trolley adsorbed on the vertical ship plate. In the case of small spacing, it is not easy to weld the weld seam

In addition, most of the process parameters of the automatic welding trolley in the prior art are adjusted through the test welding of technicians, and the process parameters are adjusted according to experience, and then the actual welding is carried out.

In the actual welding process, due to the lack of real-time observation of the weld forming characteristics and the deformation characteristics of the workpiece, once the parameters are not suitable and cannot be found in time, it will cause poor weld formation, undercut, surface pores, etc. due to lack of experience. Defects such as workpiece deformation may even cause the workpiece to be scrapped. This requires technicians to continuously observe the shape of the weld through the protective mask in real time to prevent welding defects.

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