BEARING DEVICE AND ELECTRICALLY DRIVEN PERPENDICULAR TAKE-OFF/LANDING MACHINE

Japanese Patent JP2022156910

A

To provide a bearing device and an electrically driven perpendicular take-off/landing machine capable of quickly and accurately diagnosing abnormality of a bearing especially detecting a temperature rise of the bearing for preventing seizure or the like of a bearing of a large vehicle such as a truck.SOLUTION: A bearing device includes: a bearing having a fixed ring mounted on a fixed member, rolling elements, and a rotary ring rotatably supported by the fixed ring via the rolling elements; a magnetic encoder provided with a non-magnetic film on a surface of a magnetic material where N-poles and S-poles are alternately magnetized, and is arranged at the rotary ring side; a magnetic sensor which is arranged at the fixed ring side or the fixed member, faces the magnetic encoder, and detects a magnetic property of the magnetic encoder; a rotation signal processing unit which processes the output of the magnetic sensor, and outputs a rotation signal regarding a rotational position or rotation speed of the bearing; and a temperature estimation processing unit which receives input of the rotation signal, and outputs a temperature signal regarding the temperature of the bearing.SELECTED DRAWING: Figure 2

JP2019052661	GUIDE BEARING, LITHOGRAPHY DEVICE, AND ARTICLE PRODUCTION METHOD
WO/2003/003023	INSTRUMENTED ROLLER BEARING
JP2003148502	REMOTE CONTROL MONITOR SYSTEM FOR WHEEL BEARING DEVICE

FUKUSHIMA YASUYUKI
KOIKE TAKASHI

JP2021060848A

October 14, 2022

March 31, 2021

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NTN TOYO BEARING CO LTD

F16C41/00; B64C27/08; F16C19/38; F16C19/52; F16C33/78; F16J15/326; G01K7/36

Shuji Sugimoto
Takeo Tsutsumi
Daisuke Kaneko
Hiroki Taniguchi
Kenichi Nakata
Yuka Kobayashi
Shinji Nakao

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