To identify a bearing in which abnormality occurs, on early stage while suppressing overlooking of bearing abnormality in a railway vehicle.SOLUTION: A bearing monitoring system for a railway vehicle is configured to detect abnormality in four bearings of a dolly. The bearing monitoring system comprises: a receiver for receiving temperature data of the four bearings; and a diagnosis unit for detecting abnormality in the four bearings on the basis of the temperature data received by the receiver. The diagnosis unit includes: an individual index value calculation section for calculating, as an individual index value, a difference between a temperature of a determination object bearing that is one of the four bearings, and a reference bearing temperature which is derived by using temperatures of one or more bearings including the bearings other than the determination object bearing among the four bearings; an individual determination section for determining whether or not abnormality occurs in the determination object bearing on the basis of the individual index value; a total index value calculation section for calculating, as a total index value, a difference between an average value of the temperatures of the four bearings and a predetermined reference value; and a total determination section for determining whether or not abnormality simultaneously occurs in the four bearings on the basis of the total index value.SELECTED DRAWING: Figure 5
【課題】鉄道車両における軸受異常の見逃しを抑制しつつ、異常が発生した軸受を早期に特定することを可能にする。【解決手段】軸受監視システムは、台車の4つの軸受の異常を検知する鉄道車両の軸受監視システムであって、4つの軸受の温度データを受信する受信器と、受信器で受信された温度データに基づき、4つの軸受の異常を検知する診断器と、を備え、診断器は、4つの軸受のうちの1つである判定対象軸受の温度と、4つの軸受のうち、判定対象軸受以外の軸受を含む1つ又は複数の軸受の温度を用いて導出した参照軸受温度との差を、個別指標値として算出する個別指標値算出部と、個別指標値に基づき、判定対象軸受に異常が発生したか否かを判定する個別判定部と、4つの軸受の温度の平均値と所定の基準値との差を、全体指標値として算出する全体指標値算出部と、全体指標値に基づき、4つの軸受に同時に異常が発生したか否かを判定する全体判定部と、を含む。【選択図】図5
BEARING MONITORING SYSTEM FOR RAILWAY VEHICLE, AND BEARING DIAGNOSIS METHOD
鉄道車両の軸受監視システムおよび軸受診断方法
2020-07-09
Patent
Elektronische Ressource
Japanisch
IPC: | B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / F16C SHAFTS , Wellen / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS |