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. 14, 2021
Filed:
Jun. 11, 2019
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Hiroyuki Kobayashi, Tokyo, JP;
Yoshiyuki Tsuchie, Tsuchiura, JP;
Hidekazu Moriki, Tokyo, JP;
Hiroshi Sakamoto, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
Provided is a work machine with which responsiveness of a hydraulic actuator can be improved when driving the hydraulic actuator through an electric lever-type operation device. A controllerfurther includes: an operation direction determining sectionconfigured to determine operation directions of operation devicesand; and a standby pressure switching command sectionconfigured to output a standby pressure switching command to a first target pilot pressure correction sectionor a second target pilot pressure correction sectionwhich corresponds to a solenoid proportional valve that does not correspond to the operation direction from among first solenoid proportional valves, andand second solenoid proportional valves, and. The first target pilot pressure correction section and the second target pilot pressure correction section are configured to switch a first standby pressure α to a second standby pressure β set lower than the first standby pressure in a case in which the standby pressure switching command has been inputted.