US 12,276,976 B2
Work machine maintenance management system
Takashi Igarashi, Tochigi (JP); Yasuhiko Abe, Ibaraki (JP); and Yukihito Suzuki, Ibaraki (JP)
Assigned to Hitachi Construction Machinery Co., Ltd., Tokyo (JP)
Appl. No. 17/909,031
Filed by Hitachi Construction Machinery Co., Ltd., Tokyo (JP)
PCT Filed Oct. 13, 2021, PCT No. PCT/JP2021/037846
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2022/080400, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2020-172283 (JP), filed on Oct. 13, 2020.
Prior Publication US 2023/0092796 A1, Mar. 23, 2023
Int. Cl. G05B 23/02 (2006.01)
CPC G05B 23/0283 (2013.01) [G05B 2223/02 (2018.08)] 7 Claims
OG exemplary drawing
 
1. A work machine maintenance management system comprising:
a maintenance management database server that accumulates maintenance management information of a plurality of work machines; and
a maintenance management control device that predicts a replacement timing of each component of each of the plurality of work machines based on the maintenance management information,
wherein the maintenance management information includes an actual durable period from start of use to replacement of each of the components of each of the plurality of work machines,
wherein the maintenance management control device includes a replacement-factor determining section, a service life model creator, a failure model creator, and a replacement time predictor,
wherein the replacement-factor determining section determines whether a replacement factor of each of the components is a service life factor or a failure factor based on the actual durable period of each of the components of a plurality of the work machines,
wherein the service life model creator creates a service life model of the component whose replacement factor is determined to be the service life factor by the replacement-factor determining section,
wherein the failure model creator creates a failure model of the component whose replacement factor is determined to be the failure factor by the replacement-factor determining section, and
wherein the replacement time predictor predicts a replacement timing of each of the components of each of the plurality of work machines based on the service life model and the failure model.