Title:
HYDRAULIC CONTROL VALVE ASSEMBLY OF AUTOMATIC STEERING SYSTEM FOR AGRICULTURAL MACHINERY
Document Type and Number:
WIPO Patent Application WO/2017/080230
Kind Code:
A1
Abstract:
Disclosed is a hydraulic control valve assembly of an automatic steering system for agricultural machinery, comprising a proportional reversal valve (3). A balance valve (1) is provided between the proportional reversal valve (3) and a steering cylinder. A first shuttle valve (2) is provided between the proportional reversal valve (3) and the balance valve (1). The first shuttle valve (2) is on one side of the proportional reversal valve (3), and an overflow valve (4) is on the other side of the proportional reversal valve. The overflow valve (4) is connected to a second shuttle valve (6) and a logical valve (5) respectively. The hydraulic control valve assembly has a high control power and quick response, better suits autonomously navigating operation of agricultural machinery, and can enable the system to be more energy-saving and the autonomously navigating operation of agricultural machinery to be more stable.
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Inventors:
CAO GUANGJIE (CN)
ZHAO YANPING (CN)
DAI WENDING (CN)
WANG ANBANG (CN)
GAO XIAOHAN (CN)
MAO XUNYE (CN)
CHEN KAI (CN)
ZHAO YANPING (CN)
DAI WENDING (CN)
WANG ANBANG (CN)
GAO XIAOHAN (CN)
MAO XUNYE (CN)
CHEN KAI (CN)
Application Number:
PCT/CN2016/088315
Publication Date:
May 18, 2017
Filing Date:
July 04, 2016
Export Citation:
Assignee:
SHANGHAI HUACE NAVIGATION TECH LTD (CN)
International Classes:
F15B13/06
Foreign References:
| CN103010069A | 2013-04-03 | |||
| CN105298971A | 2016-02-03 | |||
| CN103522929A | 2014-01-22 | |||
| CN103663296A | 2014-03-26 | |||
| JP2010076647A | 2010-04-08 | |||
| US20150305225A1 | 2015-10-29 |
Other References:
See also references of EP 3376055A4
Attorney, Agent or Firm:
SHANGHAI XUAN YI PATENT OFFICE (GENERAL PARTNERSHIP) (CN)
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