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:
Jun. 18, 2024
Filed:
Aug. 03, 2020
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Yusuke Suzuki, Tsuchiura, JP;
Hiroaki Tanaka, Kasumigaura, JP;
Hisami Nakano, Tsuchiura, JP;
Hiroshi Sakamoto, Kashiwa, JP;
Akihiro Narazaki, Tsukuba, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
In a hydraulic excavator including a main controller that can execute area restriction control, the main controller is configured to calculate an operation velocity Vix of a front work device in a machine body coordinate system. The controller is further configured to calculate a movement velocity (dragging velocity) of a machine body in a gravity coordinate system and correct a direction of a calculated target velocity vector upward away from a construction target surface when generation of dragging is detected during execution of the area restriction control based on the calculated operation velocity of the front work device and the calculated movement velocity of the machine body.