Special vehicle top cover welding tool and welding method

Abstract

The invention relates to the technical field of vehicle welding clamp structures, in particular to a special vehicle top cover welding tool and method. The tool comprises a plurality of mounting seats on a base; a steel plate clamping structure, which surrounds a bulletproof steel plate and is used for clamping and fixing the bulletproof steel plate on the mounting seats; a reinforcing beam clamping structure, which is used for fixing a reinforcing beam on the bulletproof steel plate; additional clamping structures, which are located on the inner side and the outer side of an accessory mounting hole of the bulletproof steel plate and used for fixing a to-be-mounted accessory to the edge of the accessory mounting hole of the bulletproof steel plate; stiffening beam positioning structures, which are located on the two adjacent to-be-connected stiffening beams and used for limiting relative movement of the two adjacent stiffening beams. The welding tool is simple in structure and convenient to use, production of the top cover of the special vehicle is more efficient and accurate, the accuracy of the top cover machining process can be effectively ensured, different clamping structures are adopted for different components, the production efficiency is greatly improved, and the welding tool has great popularization value.

Description

technical field [0001] The invention relates to the technical field of vehicle welding fixture structures, in particular to a special vehicle top cover welding tool and a welding method. Background technique [0002] Special vehicles are widely used in special operations such as airdrop operations, border patrols, scientific expeditions, forest protection, security explosion protection, emergency rescue and disaster relief. One of the special vehicles used in the national defense field has a roof over 3.5 meters in length and 2 meters in width. The main body is made of four pieces of bulletproof steel plates welded together, and the internal reinforcement beams and welding accessories are ordinary steel plates. The tensile strength of the bulletproof steel plate is 1690Mpa, the yield strength is 1370Mpa, the elongation after breaking is 11%, and the hardness is 480-530HB, which has a certain anti-attack ability. In the field of special vehicle manufacturing, the roof steel ...

AI Technical Summary

Problems solved by technology

Using this kind of manufacturing process and device, the labor intensity of the workers is high, the welding deformation is serious, the production efficiency is low, and the weld strength can only reach 60% of the base metal, which cannot meet the design requirements, and the welding stress concentration is serious, which will lead to the failure of the vehicle during use. Risk of weld cracking

[0003] Especially in the welding process of the internal reinforcement beam and accessories in the second section, the clamping and fixing of bulletproof steel plates, reinforcement beams and accessories has always been a difficult point in the welding process of the top cover, and the welding process involves the clamping of multiple parts , such as the clamping of the bulletproof steel plate, the clamping of the reinforcing beam and the clamping of the accessories. The clamping of the accessories includes the clamping of the escape circle seal beam, the spring ring seal beam and the weapon ring seat. It is necessary to maintain the stable connection of multiple parts Together, avoid displacement and movement during the welding process, resulting in welding deviations. The current welding tool cannot perfectly ensure this requirement. Therefore, there is an urgent need for a welding tool that can accurately clamp bulletproof steel plates, reinforcing beams and accessories.

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