Horizontal type current-carrying friction arc tester

Abstract

The invention provides a horizontal type current-carrying friction arc tester and relates to an arc tester. The horizontal type current-carrying friction arc tester comprises a sample clamping driving device, a bidirectional moveable carrying table, a circumference surface and a current loading device, wherein the sample clamping driving device is used for driving a cylindrical test sample to rotate around the axis thereof; the bidirectional moveable carrying table can move along the axial direction of the cylindrical test sample and the axial direction vertical to the cylindrical test sample; the circumference surface is used for driving an upper probe which is axially clamped and is vertical to the cylindrical test sample to move, so as to drive a contact of the probe to be away from or contact with the cylindrical test sample; the current loading device is used for forming a closed circuit between the probe and the cylindrical test sample under the contact state; the current loading device is used for transmitting the current to the cylindrical test sample through an ejector pin coaxially arranged together with the cylindrical test sample; a conical needle of the ejector pin is in contact fit with a conical needle groove formed in one end of the cylindrical test sample. The horizontal type current-carrying friction arc tester can ensure the stable current conduction when the test sample is rotated at high speed and can be used for researching the erosion purely caused by arc and the conductive quality when a current loading friction pair is separated.

Description

technical field [0001] The invention relates to the technical field of a current-carrying friction arc testing machine, in particular to a testing machine for studying the arc burning process, current-carrying quality and ablation. Background technique [0002] Current-carrying friction pairs such as motor carbon brushes and high-speed railway pantograph-catenary transfer current when they are in contact, but a current-carrying arc will appear at the moment of separation or contact. The high temperature of the arc will ablate the material, and the conductivity of the arc will maintain the continuity of power transmission. The degree of ablation and the quality of conductivity are related to the arcing process and characteristics of the arc, so it is necessary to study it. [0003] The current research is mainly on the current-carrying friction and wear performance research on the pin-on-disk or wire-block testing machine under the contact state of the current-carrying fricti...

AI Technical Summary

Problems solved by technology

However, the current current-carrying testing machine cannot realize the research on the damage and conductivity caused by the arc alone, and it can only study the ablation surface of the pin sample. Research on the mechanism of ablation; in addition, the current pin-on-disk testing machine usually adopts a disc and two pins to cooperate or conduct electricity through mercury between the pin-disk testing machines to realize the conduction of current. Instable current conduction between disks, affecting arc performance

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