公开(公告)号：US20190195732A1

公开(公告)日：2019-06-27

申请号：US16223192

申请日：2018-12-18

Applicant: SINTOKOGIO, LTD.

Inventor： Masahiko NAGASAKA ,  Hiroyasu MAKINO ,  Katsuaki ODAGI ,  Tomoyuki YOKOMAE

IPC: G01M13/00 ,  G01L5/00

CPC classification number: G01M13/00 ,  F15B15/20 ,  F15B19/005 ,  F15B2211/6303 ,  F15B2211/6336 ,  F15B2211/864 ,  F15B2211/87 ,  F16H21/40 ,  F16H25/20 ,  G01L5/0033 ,  G01L5/0038

Abstract: A wear detection method and system for a linear actuator such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder or the like. A physical amount detection sensor 9 is mounted on a linear actuator in which a push-pull member connected to a rod 2 pushes and pulls a pressure-receiving object while applying a lateral load in a direction different from the linear movement direction. An external force that is generated between a tube and the mounting member when the pressure-receiving object is pushed and pulled is detected by the physical amount detection sensor 9 and compared with standard external force data, which was detected in a state without abnormalities and stored in a computation/storage/determination processing device 10, to computationally determine whether the linear actuator is in a normal state or an abnormal state.