Welding connector of connecting ring and base of oil pressure vibration damper for high-speed bullet train

Abstract

The invention particularly relates to a welding connector of a connecting ring and a base of an oil pressure vibration damper for a high-speed bullet train. The welding connector comprises the weldingring and the base. The base is similar to a cone shape and comprises a first gradual change portion and a second gradual change portion. An included angle between the first gradual change portion andthe horizontal line is 50-70 degrees. An included angle between the second gradual change portion and the horizontal line is 20-40 degrees. An included angle is formed between the first gradual change portion and the second gradual change portion. Four chamfering treatment portions are arranged on the welding portion of the connecting ring and the base. The chamfering treatment portions and the included angles are welded in a matched manner. According to the welding connector, two slopes are increased for transition, the groove face of the base and the connecting ring is larger, and wettability of weld seam metal to base metal is better. The included angles of the contact face between the chamfering portions of the connecting ring and the base are increased, the filling amount of the weldseam metal is increased, and the weld seam quality is improved greatly.

Description

technical field [0001] The invention belongs to the technical field of welded joints for high-speed motor vehicles, and in particular relates to a welded joint between a connecting ring and a base of an oil pressure shock absorber for high-speed trains. Background technique [0002] The hydraulic shock absorber is a key part of the rail vehicle, with extremely high technical content. The stability of its structure is directly related to the safety of the train. The connecting ring is the key part of the connection between the shock absorber and the bogie. The welds between the ring and the protective cover seat and the outer cylinder seat are subject to strong alternating loads. In the usual design of welded joints, two steps are provided on the protective cover seat and the cylinder seat to facilitate the assembly of the connecting ring and the base. However, when this kind of welded joint is welded, the accessibility of the welding torch is not good. When welding, the weld...

AI Technical Summary

Problems solved by technology

However, when this type of welded joint is welded, the accessibility of the welding torch is not good. When welding, the welding torch cannot reach into the root of the weld, and it is very easy to form incomplete penetration, incomplete fusion, pores, slag inclusions, etc. at the root of the weld. defect

At the same time, the four 90-degree angles between the connecting ring and the base are also very easy to form dead angles, resulting in defects at the root of the weld, leading to early failure of the weld

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