A Simulation Experimental Device for Dynamic Welding Characteristics of Electromagnetic Relay Contacts with Adjustable Parameters

Abstract

The invention discloses an electromagnetic relay contact dynamic fusion welding feature simulation experiment device with adjustable parameters, which comprises an optical bread board, a reaction spring, an electromagnet, an insulated block, a moving contact clamp, a static contact clamp, an insulator, a first force sensor, a first right angle adapter board, four third supporting rods, a thin metal sheet, two linear guide rails, three corner connectors, a third adapter board, a first X-axis slip, a first Z-axis slip, a second X-axis slip, a first Y-axis slip, a second Z-axis slip, a first R-axis slip, a fourth adapter board, an optical axis, a moving contact, a static contact, sliding blocks and limiters. The position of the moving contact can be adjusted in four directions, parameters such as the gap size, the contact force size and the breaking force between the moving contact and the static contact can be adjusted, parameters such as moving contact displacement, static contact displacement, contact voltage, contact current and the contact force can be measured dynamically and in real time, key factors influencing dynamic fusion welding can be analyzed conveniently, and a reference is provided for an anti-fusion welding long-service life contact system.

Description

technical field [0001] The invention belongs to the technical field of DC relays, and more specifically relates to a dynamic welding characteristic simulation experiment device for electromagnetic relay contacts with adjustable parameters. Background technique [0002] High voltage, miniaturization, large capacity, and long life are the development direction of the replacement of DC relays and other switching appliances, especially aerospace appliances. The requirements in this regard are more prominent and urgent. One of the core bottlenecks currently restricting the development and application of such high-index electrical appliances is that the contacts are easy to weld and the resulting short electrical life. For example, the high-end G series DC relay / contactor developed by the American GIGAVAC company can realize on-off operation under the large capacity of DC 25kVdc / 30A-110A with a volume of only about 128mm×Φ61mm, but its electrical life is very short and cannot meet...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide an adjustable parameter electromagnetic relay contact dynamic welding characteristic simulation experiment device, aiming at solving the limitation and simplicity of the experimental measurement conditions of the electromagnetic relay contact dynamic welding characteristic, The conclusions leading to the dynamic fusion welding phenomenon under this limited condition cannot guide the design of anti-fusion welding long-life switching devices and the technical problems of the selection of contact materials

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