The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2004
Filed:
Sep. 27, 2002
Hiroyuki Adachi, Tsuchiura, JP;
Toichi Hirata, Ushiku, JP;
Genroku Sugiyama, Ibaraki-ken, JP;
Hiroshi Watanabe, Ushiku, JP;
Shuichi Miura, Koshigaya, JP;
Koji Mitsuya, Kashiwa, JP;
Yoshiaki Saito, Adachi-ku, JP;
Atsushi Sato, Soka, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A hydraulic excavator working in fields includes a controller for measuring a working time for each of an engine , a front , a swing body , and a travel body , storing measured data in a memory of the controller , and then transferring it to a base station computer via satellite communication, an FD, etc. The transferred data is stored as a database in the base station computer . The base station computer reads the data stored in the database for each hydraulic excavator, calculates a working time of a part belonging to each section on the basis of the working time of that section, and compares the calculated working time with a preset target replacement time interval of the relevant part, thereby calculating a remaining time up to next replacement of the relevant part and managing the scheduled replacement timing thereof. Thus, the appropriate scheduled replacement timing of parts can be determined even in a construction machine having a plurality of sections that differ in working time from each other.