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:
Feb. 27, 2024
Filed:
Dec. 13, 2019
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Kazuyuki Ito, Kobe, JP;
Yoshikazu Urimoto, Kakogawa, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
Provided is a wheel loader capable of reducing erroneous determination of rear wheel lifting. The wheel loaderincludes a controllerfor determining a rear wheel lifting state where rear wheelsB are lifted upwardly. The controlleris configured to, when a temporal change rate α of a bucket operation angle becomes a temporal change rate of a bucket operation angle necessary for a tilt operation of a bucketduring an excavation operation and a temporal change rate β of a vehicle body inclination angle estimated by the controllerbecomes a temporal change rate of an obliquely upward inclination state of a rear vehicle body with respect to a front vehicle body, turn on a correlation flag indicating a correlation between an operation state of the bucketand an inclination state of a vehicle body to determine a rear wheel lifting.