Method for the advance indication of damage to wheel bearings
First Claim
1. In a method for advance indication of the possibility of damage occurring to wheel bearings of vehicular means having a plurality of wheels, including the steps of monitoring the temperature of the wheel bearings with temperature detectors fixedly mounted at the wheel bearings, and producing indication signals when a temperature detected by a temperature detector exceeds a determinable value;
- the improvement wherein said step of monitoring comprises monitoring the temperature of a plurality of wheel bearings of said vehicular means, deriving a selected value from said plurality of monitored temperatures, obtaining, as an inverse function of ambient a further temperature reference value of said vehicular means monitored by one temperature detector mounted on said vehicular means spaced from wheel bearings thereof, and comparing said derived selected value with said further temperature reference value to produce said advance indication signal.
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Accused Products
Abstract
In a method for advance indication of the possibility of damage occurring to wheel bearings of vehicles, particularly railroad vehicles, the temperatures of the wheel bearing sets of a plurality of wheels are monitored by temperature detectors fixedly mounted on the vehicle. A determined value is derived from the measured values of temperature, and this determined value is compared with the temperature of a further temperature detector, in order to produce a warning signal. The warning system is incorporated in the vehicle itself, and provides a warning to the vehicle personnel.
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Citations
26 Claims
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1. In a method for advance indication of the possibility of damage occurring to wheel bearings of vehicular means having a plurality of wheels, including the steps of monitoring the temperature of the wheel bearings with temperature detectors fixedly mounted at the wheel bearings, and producing indication signals when a temperature detected by a temperature detector exceeds a determinable value;
- the improvement wherein said step of monitoring comprises monitoring the temperature of a plurality of wheel bearings of said vehicular means, deriving a selected value from said plurality of monitored temperatures, obtaining, as an inverse function of ambient a further temperature reference value of said vehicular means monitored by one temperature detector mounted on said vehicular means spaced from wheel bearings thereof, and comparing said derived selected value with said further temperature reference value to produce said advance indication signal.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In an apparatus for the advance indication of the possibility of damage occurring to the wheel bearings on a vehicle wherein means are provided for mounting a plurality of first temperature detectors to provide first signals corresponding to the temperatures of separate wheel bearings of said vehicle;
- the improvement comprising a separate second temperature detector for mounting on said vehicle at a location spaced from a wheel bearing to provide a second temperature signal, compensation means coupled to said second detector for compensating for extremes in detected temperature and providing a second signal, means for deriving a selected signal as a function of said first signals, and means for comparing said selected signal with said second signal to provide said advance indication.
- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification