Slip ring brush having a galvanic multi-layer system

摘要

A slip ring arrangement comprises a brush with a first contact material on the surface, which rests on a slideway with a second contact material on the surface. The slideway further comprises a layer with a third contact material beneath the second contact material. In this case, the abrasion of the brush is lower than that of the second contact material in the case of a sliding contact between the brush and the second contact material. In the case of a sliding contact between the brush and third contact material, the abrasion of the brush is higher than that of third contact material. As a result, the second contact material of the slideway is degraded first, which corresponds to the normal service life of a slideway. Subsequently, the brush is worn off relative to the third contact material, by means of which a further considerable extension in the service life is achieved.

主权项

1. A slip ring assembly, comprising:
a brush with a first contact material coupled to a surface of the brush; and a slideway in contact with the brush, the comprising a base, second and third contact materials coupled to a surface of the base, where a layer of the third contact material is disposed between the base and a layer of the second contact material, wherein the assembly is configured such that:
when the brush is in sliding contact with the second contact material of the slideway, the abrasion of the first contact material of the brush is less than the abrasion of the second contact material of the slideway, andin the event that the layer of the second contact material of the slideway is worn through and the brush is in sliding contact with the layer of the third contact material of the slideway, the abrasion of the first contact material of the brush will be higher than the abrasion of the third contact material of the slideway and the slip ring assembly can continue to function.