An automatic welding equipment suitable for multi-pole longitudinals of high-strength steel structures

Abstract

The invention provides an automatic welding equipment suitable for multi-pole longitudinals of high-strength steel structures, including an automatic welding unit arranged at each pole of the longitudinals; the automatic welding unit includes a tracking controller, a mobile trolley, and a laser tracking device installed on the mobile trolley a welding torch, an angle adjustment mechanism connected between the welding torch and the mobile trolley, a gas source for supplying shielding gas, a wire supply mechanism for supplying solid welding wire, and a mechanical tracking mechanism, which includes a mounting bracket hinged on the mobile trolley, a fixed The first magnet on the mounting frame and used for attracting the first side of the web, and the second magnet fixed on the mobile trolley and used for attracting the upper plane of the panel, the adjustment drive sources in the laser tracker and the angle adjustment mechanism are the same as The trace controller is connected. This application adopts the welding process of solid welding wire combined with shielding gas, combined with laser tracking and mechanical tracking, to achieve high-efficiency and high-quality welding, and meet the needs of automatic welding of multi-pole longitudinal frame fillet welds on the deck.

Description

technical field [0001] The present invention relates to a kind of automatic welding equipment, in particular to a kind of automatic welding equipment suitable for multi-pole longitudinal frames of high-strength steel structures. Background technique [0002] In the construction of ships, low-alloy high-strength steel with a yield strength of ≥590MPa is a commonly used steel for hull structures, such as: figure 1 As shown, a multi-pole longitudinal frame 20 is welded on the deck 10 of the ship, and the multi-pole longitudinal frame 20 is a high-strength double-headed flat bulb steel, with a web 21 extending up and down, and a panel 22 arranged on the upper end of the web 21. The lower end of the plate 21 is fixed to the deck 10 by welding. [0003] For a long time, the welding methods used in the construction of ships are traditional manual welding and submerged arc welding. The technology is relatively mature, but it has the characteristics of low welding efficiency, unstab...

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Problems solved by technology

[0005] However, the multi-pole longitudinals 20 are low-alloy high-strength steel with a yield strength ≥ 590 MPa. Due to the high-strength steel solid welding wire with a yield strength ≥ 590 MPa, the gas shielded welding process requirements are relatively high, and the welding operation is difficult. Pores and incomplete fusion are likely to occur during welding. , cracks and other defects

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