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. 25, 2019
Filed:
Jul. 04, 2016
Shanghai Huace Navigation Technology Ltd, Shanghai, CN;
Guangjie Cao, Shanghai, CN;
Yanping Zhao, Shanghai, CN;
Wending Dai, Shanghai, CN;
Anbang Wang, Shanghai, CN;
Xiaohan Gao, Shanghai, CN;
Xunye Mao, Shanghai, CN;
Kai Chen, Shanghai, CN;
SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD, Shanghai, CN;
Abstract
Disclosed is a hydraulic control valve assembly of automatic steering system for agricultural machine including a proportional directional valve (). A balancing valve () is arranged between the proportional directional valve () and the steering cylinder. A first shuttle valve () is arranged between the proportional directional valve () and the balancing valve (). The first shuttle valve () is positioned on one side of the proportional directional valve (). An overflow valve () is positioned on another side of the proportional directional valve (). The overflow valve () is connected to a second shuttle valve () and a logic valve () respectively. The hydraulic control valve assembly has a large control power, a rapid response, and is more suitable for the autonomous navigation operation of agricultural machine. Moreover, the system saves more energy, such that the autonomous navigation operation of agricultural machine is more stable.