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. 04, 2024
Filed:
Feb. 04, 2020
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Yasuhiko Kanari, Kasumigaura, JP;
Hideto Ishibashi, Itako, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A hydraulic excavator includes a receiver configured to calculate a position and an azimuth angle of an upper swing structure on the basis of satellite signals received by two GNSS antennae and a controller configured to calculate a distal end position of a bucket on the basis of the position and the azimuth angle of the upper swing structure calculated by the receiver. The controller sets, on the basis of installation positions of the two GNSS antennae, a movable range of a front work device and an inclination angle and an azimuth angle of the upper swing structure, a range within which the front work device possibly becomes an obstacle to reception of satellite signals by each of the two GNSS antennae as a mask range. The receiver is configured to calculate the position and the azimuth angle of the upper swing structure on the basis of the satellite signals transmitted from the remaining satellites other than the satellites positioned in the mask range.