Excavator movable arm descending control system and excavator

The utility model discloses an excavator movable arm descending control system and an excavator, which comprise a main oil supply path, a main oil supply path and an auxiliary oil supply path, an oil inlet of the main multi-way valve is connected with the main oil supply way, and an oil return openi...

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Bibliographic Details
Main Authors HE SONGQUAN, HUANG XIAO, LI SAIBAI, DAI PENG, LI XIANG, ZHANG JING
Format Patent
LanguageChinese
English
Published 21.01.2022
Subjects
DREDGING
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
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Summary:The utility model discloses an excavator movable arm descending control system and an excavator, which comprise a main oil supply path, a main oil supply path and an auxiliary oil supply path, an oil inlet of the main multi-way valve is connected with the main oil supply way, and an oil return opening of the main multi-way valve is used for being connected with a hydraulic oil tank; a rod cavity of the movable arm oil cylinder is connected with a first working oil port of the main multi-way valve, a rodless cavity of the movable arm oil cylinder is connected with a second working oil port of the main multi-way valve, and a piston rod of the movable arm oil cylinder is used for being connected with a movable arm device of the excavator; a liquid inlet of the potential energy recovery device is connected with the rodless cavity, and a liquid outlet of the potential energy recovery device is connected with the second working oil port; the bypass loop is connected between the liquid outlet of the potential energy
Bibliography:Application Number: CN202121722406U