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:
Apr. 01, 2025
Filed:
Jan. 27, 2021
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A hydraulic excavator includes a traveling body, a slewing body, a working front having a boom, an arm, and a bucket, an operation amount detector, a posture detector, a load detector, a drive controller, and a drive unit. The drive controller calculates a target operation speed of the actuator based on the operation amount, the posture of the working front, and the target surface distance so that the bucket excavates along the construction target surface, and determines soil hardness of a place to be excavated based on a result detected by the load detector, corrects the target operation speed based on the soil hardness, and generates a motion command value. The drive controller determines a target jack-up speed when the hydraulic excavator jacks up based on the target surface distance, and corrects the target operation speed based on the determined target jack-up speed.