BEARING STATE DETECTION DEVICE AND BEARING STATE DETECTION METHOD

• US 20160282223A1
• Filed: 11/05/2014
• Published: 09/29/2016
• Est. Priority Date: 11/05/2013
• Status: Abandoned Application

• Current Assignee: NSK Limited
• Original Assignee: NSK Limited
• Inventors: YAMAZAKI, Ryota
• Application Number:
  US15/034,226
• Publication Number:
  US 20160282223A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B61C 9/48 with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
• CPC Class Codes: B61K 9/00 Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
• CPC Class Codes: F16C 19/52 with devices affected by abnormal or undesired conditions
• CPC Class Codes: F16C 2326/10 Railway vehicles
• CPC Class Codes: G01M 13/04 Bearings
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G01M 17/10 Suspensions, axles or wheels
• CPC Class Codes: Y02T 30/00 Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Abstract

The present invention provides a bearing state detection device which can detect, with high accuracy, the actual state of damage to a bearing of a gear device which is part of the truck of a railroad vehicle. The bearing state detection device configured to detect the state of a bearing of a gear device which is part of the truck of a railroad vehicle, detects the actual state of damage to a bearing based on information which includes a parameter relating to the state of the bearing and is measured when the railroad vehicle is actually travelling.

Claims

1. A bearing state detection device configured to detect a state of a bearing of a gear device configuring a truck of a railroad vehicle,

wherein the bearing state detection device is configured to detect an actual state of damage to the bearing based on information which includes a parameter relating to the state of the bearing and is measured during an actual traveling of the railroad vehicle.

2. The bearing state detection device according to claim 1, comprising:

a filtering processing unit configured to remove a parameter relating to constitutional elements except for the bearing from the information measured during the actual traveling of the railroad vehicle; and

an actual state analysis unit configured to analyze the actual state relating to the damage to the bearing by analyzing the information processed by the filtering processing unit.

3. The bearing state detection device according to claim 2,

wherein the actual state analysis unit is configured to compare a result obtained by analyzing the information processed by the filtering processing unit with a result obtained by analyzing the information processed by the filtering processing unit when the bearing is normal to determine whether the bearing is damaged.

4. The bearing state detection device according to claim 1,

wherein the information including the parameter relating to the state of the bearing is a measured value of a sensor provided in a vicinity of the bearing of the gear device.

5. The bearing state detection device according to claim 1,

wherein the information including the parameter relating to the state of the bearing is information of at least one of vibration, temperature, torque, displacement, Acoustic Emission (AE) and rotation speed.

6. A bearing state detection method of detecting a state of a bearing of a gear device configuring a truck of a railroad vehicle, the method comprising:

detecting an actual state of damage to the bearing based on information which includes a parameter relating to the state of the bearing and is measured during an actual traveling of the railroad vehicle.