STATE DETECTION DEVICE FOR BEARING ROLLER, ROLLER BEARING DEVICE WITH SENSOR, AND WIND TURBINE GENERATOR

• US 20140157880A1
• Filed: 11/27/2013
• Published: 06/12/2014
• Est. Priority Date: 12/12/2012
• Status: Active Grant

• Current Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Original Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Inventors: MATSUDA, Shinya
• Granted Patent: US 9,127,649 B2
• Time in Patent Office: Days
• US Class Current: 73/112.01
• CPC Class Codes: F03D 17/00 Monitoring or testing of wind motors, e.g. diagnostics testing during commissioning of wind motors F03D13/30
• CPC Class Codes: F16C 19/364 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
• CPC Class Codes: F16C 19/522 related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
• CPC Class Codes: F16C 19/525 related to temperature and heat, e.g. insulation
• CPC Class Codes: F16C 19/527 related to vibration and noise
• CPC Class Codes: F16C 2233/00 Monitoring condition, e.g. temperature, load, vibration
• CPC Class Codes: F16C 2300/14 Large applications, e.g. bearings having an inner diameter exceeding 500 mm
• CPC Class Codes: F16C 2360/31 Wind motors in general F03D
• CPC Class Codes: F16C 33/366 Tapered rollers, i.e. rollers generally shaped as truncated cones
• CPC Class Codes: F16C 33/526 extending through the rollers and joining two lateral cage parts
• CPC Class Codes: F16C 41/008 Identification means, e.g. markings, RFID-tags; Data transfer means
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

A state detection device according to the invention includes a strain gauge that detects a physical state of a tapered roller, and a processing portion that obtains a detection signal that is output from the strain gauge, performs processing on the detection signal, and transmits detection data obtained by performing the processing on the detection signal, to an outside. The strain gauge and the processing portion are accommodated in a through-hole formed at an axis center of the tapered roller.

Claims

1. A state detection device that detects a physical state of a bearing roller that is rollably disposed between a first bearing ring and a second bearing ring that is disposed concentrically with the first bearing ring, the state detection device comprising:

a sensor that detects the physical state of the bearing roller; and

a processing portion that obtains a detection signal that is output from the sensor, performs processing on the detection signal, and transmits detection data obtained by performing the processing on the detection signal, to an outside,

wherein the sensor and the processing portion are accommodated in a central hole formed at an axis center of the bearing roller.

2. The state detection device according to claim 1, wherein the processing portion includes a storage portion that stores the detection data obtained by performing the processing on the detection signal output from the sensor.

3. The state detection device according to claim 1, wherein the processing portion is provided on a substrate, and the substrate is accommodated in the central hole in a state in which the substrate is not in contact with an inner surface of the bearing roller, the inner surface defining the central hole.

4. The state detection device according to claim 2, wherein the processing portion is provided on a substrate, and the substrate is accommodated in the central hole in a state in which the substrate is not in contact with an inner surface of the bearing roller, the inner surface defining the central hole.

5. The state detection device according to claim 3, further comprising

a substrate retaining material that is interposed between the substrate and the inner surface defining the central hole and retains the substrate in the state in which the substrate is not in contact with the inner surface defining the central hole.

6. The state detection device according to claim 4, further comprising

a substrate retaining material that is interposed between the substrate and the inner surface defining the central hole and retains the substrate in the state in which the substrate is not in contact with the inner surface defining the central hole.

7. The state detection device according to claim 5, wherein the substrate retaining material is formed of a material having rigidity lower than rigidity of the substrate.

8. The state detection device according to claim 6, wherein the substrate retaining material is formed of a material having rigidity lower than rigidity of the substrate.

9. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 1.

10. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 2.

11. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 3.

12. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 4.

13. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 5.

14. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 6.

15. A roller bearing device with a sensor comprising:

a first bearing ring;

a second bearing ring that is disposed concentrically with the first bearing ring;

a plurality of bearing rollers that is rollably disposed between the first bearing ring and the second bearing ring; and

a state detection device that detects a physical state of at least one of the bearing rollers,

wherein the state detection device is the state detection device according to claim 7.

16. A wind turbine generator comprising:

a main shaft having one end at which a rotor blade that receives wind power is provided so as to be rotatable together with the main shaft;

a generator that generates electricity by rotation force of the main shaft; and

a bearing device that supports the main shaft so that the main shaft is rotatable,

wherein the bearing device is the roller bearing device with the sensor according to claim 9.

17. A wind turbine generator comprising:

a main shaft having one end at which a rotor blade that receives wind power is provided so as to be rotatable together with the main shaft;

a generator that generates electricity by rotation force of the main shaft; and

a bearing device that supports the main shaft so that the main shaft is rotatable,

wherein the bearing device is the roller bearing device with the sensor according to claim 10.

18. A wind turbine generator comprising:

a main shaft having one end at which a rotor blade that receives wind power is provided so as to be rotatable together with the main shaft;

a generator that generates electricity by rotation force of the main shaft; and

a bearing device that supports the main shaft so that the main shaft is rotatable,

wherein the bearing device is the roller bearing device with the sensor according to claim 11.

19. A wind turbine generator comprising:

a main shaft having one end at which a rotor blade that receives wind power is provided so as to be rotatable together with the main shaft;

a generator that generates electricity by rotation force of the main shaft; and

a bearing device that supports the main shaft so that the main shaft is rotatable,

wherein the bearing device is the roller bearing device with the sensor according to claim 12.

20. A wind turbine generator comprising:

a main shaft having one end at which a rotor blade that receives wind power is provided so as to be rotatable together with the main shaft;

a generator that generates electricity by rotation force of the main shaft; and

a bearing device that supports the main shaft so that the main shaft is rotatable,

wherein the bearing device is the roller bearing device with the sensor according to claim 13.