System for determining the wear of a bearing and associated method
AssigneesAktiebolaget Skf, SKF Australia Pty Ltd
InventorsFranck Landrieve, Lionel Martin, Ghufran Jan, Farrukh Yaqub
Life of this patent
Estimating the term…
Abstract
A bearing includes a first ring and a second ring capable of rotating concentrically relative to one another and a system for determining wear of the bearing in a machine. The system for determining wear includes identifying means for identifying a set of parameters of the machine acting on the load applied on the bearing, measuring means, conditioning means, determining means, first determining means, second determining means, and third determining means for determining the state of wear of the bearing according to the value of the representative parameter.
Claims9
A method for determining wear of a bearing in a machine, the bearing including a first ring and a second ring capable of rotating concentrically relative to one another, the method comprising the steps of:
- a) identifying a set of parameters of the machine acting on a value of a load applied on the bearing;
- b) measuring a plurality of axial differential distances between the first ring and the second ring of the bearing, for each measured axial differential distance measuring a slew angle between the first and the second rings and the set of parameters associated with the axial differential distance, when the machine is operating during a predefined duration following an implementation of the bearing in the machine;
- c) determining a relationship between the measured axial differential distances, the measured slew angles and the measured sets of parameters;
- d) measuring the axial differential distance between the first ring and the second ring of the bearing, the slew angle and the set of parameters associated with the axial differential distance during normal operation of the machine;
- e) determining an axial distance from the relationship determined at step c), and the slew angle and the set of parameters measured at step d);
- f) determining a representative parameter of the wear of the bearing by subtracting the axial distance determined at step e) from the axial differential distance measured at step d);
- and
- g) determining a state of wear of the bearing according to the value of the representative parameter.
A bearing assembly for a machine, the bearing assembly comprising:
- a bearing including a first ring and a second ring capable of rotating concentrically relative to each other;
- and
- a system for determining wear of the bearing in the machine, the system comprising:
- identifying means for identifying a set of parameters of the machine acting on a value of a load applied on the bearing;
- measuring means for measuring a plurality of axial differential distances between the first ring and the second ring of the bearing, and for each measured axial differential distance, measuring a slew angle between the first ring and the second ring during a predefined duration following an implementation of the bearing in the machine and during normal operation of the machine;
- conditioning means for associating a set of parameters and the slew angle to each measured axial differential distance;
- determining means for determining a relationship between the measured axial differential distances, the measured slew angles and the measured sets of parameters;
- first determining means for determining an axial distance from the relationship determined by the determining means, slew angle and the set of parameters during normal operation of the machine;
- second determining means for determining a representative parameter of the wear of the bearing by subtracting the axial distance determined by the first determining means from the axial differential distance measured by the measuring means during normal operation of the machine;
- and
- third determining means for determining a state of wear of the bearing according to the value of the representative parameter.
Dependencies are inferred from the claim text.