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:
Sep. 17, 2019
Filed:
Sep. 15, 2016
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Takeshi Iwaki, Tsuchiura, JP;
Atsushi Kitaguchi, Tsuchiura, JP;
Kazunori Ishihara, Tsuchiura, JP;
Jun Ikeda, Tsuchiura, JP;
Yoshifumi Nabeshima, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A dump truck pitching control system that can improve the ride quality of a vehicle body and the drive stability during traveling is provided. The present invention includes: a pitching state amount detection sectionthat detects a state amount of the pitching movement of the vehicle body; a spring characteristics calculation sectionthat calculates spring characteristics of suspension cylinders, based on detection results of stroke sensors, pressure sensors, and temperature sensors; a pitching target amount calculation sectionthat calculates a target amount of the pitching movement of the vehicle body, according to the spring characteristics calculated by the spring characteristics calculation section; and a torque correction value calculation sectionthat calculates a torque correction value required to correct the pitching amount, according to the spring characteristics calculated by the spring characteristics calculation section