REGENERATION CONTROL HYDRAULIC SYSTEM

WIPO Patent Application WO/2021/057727

A1

A regeneration control hydraulic system, comprising at least one hydraulic pump, an actuator (7), a regeneration oil path (1), and a regeneration cutoff oil path (2). The regeneration oil path (1) is used for sending return oil as regeneration oil to a negative-pressure cavity of the actuator (7). The return oil is working oil discharged from the actuator. The regeneration oil path (1) is provided with a regeneration valve (11) and a first control valve (12). The first control valve (12) is used for controlling the regeneration oil to enter the negative-pressure cavity of the actuator when a working device contracts back, or discharging oil from the actuator (7) to the regeneration cutoff oil path (2) when the working device moves outwards. The regeneration cutoff oil path (2) sends the regeneration oil passing through the regeneration valve (11) or the oil discharged from the actuator to other destinations. The regeneration cutoff oil path (2) is provided with a regeneration cutoff valve (21). The regeneration control hydraulic system solves the technical problems such as a complex regeneration and regeneration cutoff control structure, low adjustability, and slow response of regeneration control hydraulic systems in the prior art.

WANG LIPING (CN)
HUANG GUOHE (CN)
JIA JING (CN)
HA LIANG (CN)
LIU HONGGUANG (CN)
HAN JUNXIANG (CN)
ZHAI LI (CN)

PCT/CN2020/116877

April 01, 2021

September 22, 2020

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JIANGSU HENGLI HYDRAULIC TECH CO LTD (CN)

F15B11/08

CN103608526A	2014-02-26
CN210829928U	2020-06-23
CN110541857A	2019-12-06
CN209414291U	2019-09-20
EP1571352A1	2005-09-07
CN208363156U	2019-01-11
CN201679029U	2010-12-22

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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