Insulation structure of friction specimen holder and apparatus body in current-carrying frictional wear experiment

Abstract

The invention relates to an insulation structure of a friction disc and an equipment body in a current-carrying friction wear testing machine. The friction disc is fixedly assembled at the external end of a transmission shaft; the transmission shaft is rotatablely assembled on the equipment body; a disconnecting surface is arranged on the transmission shaft of the exposed section at the internal side of the fixed assembly position with the friction disc; the disconnecting surface divides the transmission shaft into a left transmission shaft body section, a right transmission shaft body section and an end section; the left transmission shaft section and the right transmission shaft section have the same axis line and are fixed into a whole; electric insulated coating is coated on the disconnecting surface of at least one side. The insulated coating generally has thin thickness, light weight, large hardness, good rigidity and is not easy to deform when bearing the pressure; as the insulation type between the testing part and the machine body of a current-carrying testing machine, the insulation structure of the invention meets the insulation performance requirement at the high speed, improves the rotation precision and ensures the dynamic balance during the high-speed rotation process simultaneously, avoids the infidelity of the test results and correctly reflects the performance of the test objects.

Description

technical field [0001] The invention relates to a current-carrying friction and wear test device, in particular to an insulating structure between a friction sample fixture and a device body in the current-carrying friction and wear test device. Background technique [0002] In the current-carrying friction and wear test, high-voltage, high-current alternating current or direct current is involved. If there is no insulation protection measure between the test part and the body, not only will the electrical equipment on the body be damaged due to leakage, but the test current will be damaged due to poor insulation. The loss from the body causes the test results to be distorted and cannot correctly reflect the performance of the test object. For the insulation of high-speed rotating parts and the body, rubber and other traditional soft insulation methods are no longer suitable, which affects the stability of rotation, especially the dynamic balance at high speeds. Therefore, ...

AI Technical Summary

Problems solved by technology

[0002] In the current-carrying friction and wear test, high-voltage, high-current alternating current or direct current is involved. If there is no insulation protection measure between the test part and the body, not only will the electrical equipment on the body be damaged due to leakage, but the test current will be damaged due to poor insulation. Loss from the body, resulting in distorted test results, which cannot correctly reflect the performance of the test object

For the insulation of high-speed rotating parts and the body, rubber and other traditional soft insulation methods are no longer applicable, which affects the stability of rotation, especially the dynamic balance at high speed

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