Integrated Bearing Seat for Direct Inner-Ring Temperature Detection

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Solution Overview

Problem

Existing bearing temperature detection methods rely on inferred temperatures from shaft sleeves, leading to inaccuracies and deviations from actual bearing temperatures, which can cause damage due to low lubricating grease viscosity at high temperatures.

Innovation Solution

An integrated bearing seat with multiple temperature sensors directly corresponding to the outer and inner rings of the bearings, accelerometers for vibration detection, and displacement sensors for wear analysis, along with a cooling mechanism to maintain optimal operating conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a temperature sensor is arranged on a bearing seat or shaft sleeve to detect bearing temperature, then the detection system is simple to implement, but the temperature measurement accuracy deteriorates because the detected temperature is simulated rather than actual bearing temperature

Engineering Contradiction:

Improvedetection system implementationVSAvoidbearing temperature measurement accuracy

Core Design Contradiction:

Ease of manufactureVSMeasurement precision

Solution Approach 1:

The patent introduces a thermal conductor as an intermediary element that physically contacts the bearing inner ring and transmits its temperature to the temperature sensor. This mediator allows indirect measurement of the rotating bearing temperature while maintaining measurement accuracy, resolving the contradiction between simple implementation and accurate measurement.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the conventional approach of directly mounting sensors on the bearing (which would interfere with bearing operation) with a non-contact thermal conduction method. The thermal conductor transfers temperature information mechanically while the sensor remains stationary, substituting a mechanical measurement system that doesn't interfere with bearing rotation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Temperature

If the temperature of lubricating grease exceeds 100°C, then the bearing operates at high temperature, but the viscosity of lubricating grease becomes too low causing lubricating performance failure and bearing damage

Engineering Contradiction:

Improvebearing operating temperatureVSAvoidlubricating performance

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent implements a feedback mechanism by continuously monitoring the actual bearing temperature through the thermal conductor and temperature sensor system. This real-time temperature feedback allows for early warning when temperature approaches critical levels (100°C), enabling preventive maintenance or cooling actions before lubricating grease viscosity deteriorates and bearing damage occurs.

Inventive Principle:

Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution provides accurate and reliable temperature detection, reduces vibration-induced damage, and prolongs bearing service life by compensating for thermal expansion and contraction, ensuring stable operation.

Implementation Method 1

a bearing operating condition detector which directly corresponds to an outer ring and/or an inner ring of each bearing so as to detect the temperature of the outer ring and/or the inner ring of each bearing

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP3835749B1Integrated bearing seat capable of accurately detecting operating condition of bearing

Publication Date: 2023.10.18 ZHEJIANG UTE BEARING

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AI summary

The present invention provides an integrated bearing seat capable of accurately detecting operating conditions of bearings, and belongs to the technical field of bearings. The integrated bearing seat includes a shaft sleeve; a plurality of bearings are arranged in the shaft sleeve; a rear end cover and a front end cover are respectively arranged at two ends of the shaft sleeve; and a bearing operating condition detector, which directly corresponds to an outer ring and/or an inner ring of each bearing so as to detect the temperature of the outer ring and/or the inner ring of each bearing, is arranged in the shaft sleeve. The present invention can directly detect the temperature of the bearings under operating conditions, and can obtain more accurate and reliable detection results than the judgement of the temperature of the bearings by detecting the temperature of the shaft sleeve in the prior art