Bearing and method for monitoring wear and/or measuring load

Abstract

The invention relates to a bearing, in particular a rolling bearing, comprising a stationary first bearing ring and a second bearing ring arranged in a rotatable manner around the longitudinal axis of the first bearing ring. The bearing has at least one first sensor and a second sensor, and the first sensor and the second sensor are non-contact measuring sensors. The first sensor and the second sensor each have a sensor surface, wherein the first sensor is arranged opposite the at least partly circumferential reference edge and the second sensor is arranged opposite the reference surface. A first sensor is provided for measuring the degree of overlap between the sensor surface and the reference edge, and a second sensor is provided for measuring the distance, in particular the radial distance, between the sensor surface and the reference surface.

Description

Background technique [0001] Bearings serve to guide the structural components movably relative to each other, for example by means of two bearing rings arranged concentrically to one another, one of which is arranged in a rotationally fixed manner and which roll directly or indirectly against each other. Depending on the size and construction of the bearing, considerable forces can be absorbed. Since such bearings are often mounted in inaccessible locations, it is desirable to identify in advance the need to service the bearings (eg due to wear) in order to keep bearing downtime due to repairs as short as possible. Abrasion typically involves abrasion or damage of material, such as cracking or spalling, especially at force-absorbing surfaces. [0002] It is known, for example, from EP 0922 870 A1 to accommodate contact pins in bores of a bearing ring, which protrude with a certain amount of play (eg tenths of a millimeter) into recesses of the oppositely positioned bearing ri...

AI Technical Summary

Problems solved by technology

However, the disadvantage here is that in the case of combined radial and axial displacements caused by wear or load conditions, the radial and axial components cannot be clearly separated from each other, since in both cases a or multiple sensors all detect a change in distance along a non-stepped profile

In each case the profile has to be manufactured very precisely and the bearing or at least the sensor has to be adjusted very precisely relative to the non-stepped profile, which requires considerable labor expenditure

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