Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydraulic control system for excavator-type construction machine
The problem to be solved is to study that when a flow control valve is used as a valve for limiting the flow rate supplied to an arm cylinder during interlocking operation of a slewer motor and the arm cylinder, opening area control is performed on the flow control valve arranged on the upstream side of a reversing valve of the arm. [Solution] The present invention provides a configuration for controlling the opening area of a first flow rate control valve (30) for an arm on the basis of a target supply flow rate to an arm cylinder (9), a target pressure difference between a first hydraulic pump (A) and the supply pressure to the arm cylinder (9), and the opening area of a supply valve passage (25e) to a reversing valve for the arm, during the interlocking operation of the slewer motor (11) and the arm cylinder (9), the pressure difference is set to be large as the operation amount of the slewer manipulator increases, and the opening area of the arm first flow control valve (30) is set to be small as the pressure difference increases.
有待解决的问题：研究在回转装置马达与斗杆缸的联锁操作期间，将流量控制阀作为限制向斗杆缸的供给流量的阀使用时，对配置在斗杆的换向阀的上游侧的流量控制阀进行开口面积控制。解决方案：本发明提供了一种配置，该配置基于到斗杆缸(9)的目标供给流量、第一液压泵A与向斗杆缸(9)的供给压力之间的目标压差、以及向斗杆的换向阀的供给阀通路(25e)的开口面积来控制斗杆用第一流量控制阀(30)的开口面积，并且在回转装置马达(11)与斗杆缸(9)的联锁操作期间，随着回转装置操纵器的操作量的增加，将压差设定得较大，随着压差的增加，将斗杆用第一流量控制阀(30)的开口面积设定得较小。
Hydraulic control system for excavator-type construction machine
The problem to be solved is to study that when a flow control valve is used as a valve for limiting the flow rate supplied to an arm cylinder during interlocking operation of a slewer motor and the arm cylinder, opening area control is performed on the flow control valve arranged on the upstream side of a reversing valve of the arm. [Solution] The present invention provides a configuration for controlling the opening area of a first flow rate control valve (30) for an arm on the basis of a target supply flow rate to an arm cylinder (9), a target pressure difference between a first hydraulic pump (A) and the supply pressure to the arm cylinder (9), and the opening area of a supply valve passage (25e) to a reversing valve for the arm, during the interlocking operation of the slewer motor (11) and the arm cylinder (9), the pressure difference is set to be large as the operation amount of the slewer manipulator increases, and the opening area of the arm first flow control valve (30) is set to be small as the pressure difference increases.
有待解决的问题：研究在回转装置马达与斗杆缸的联锁操作期间，将流量控制阀作为限制向斗杆缸的供给流量的阀使用时，对配置在斗杆的换向阀的上游侧的流量控制阀进行开口面积控制。解决方案：本发明提供了一种配置，该配置基于到斗杆缸(9)的目标供给流量、第一液压泵A与向斗杆缸(9)的供给压力之间的目标压差、以及向斗杆的换向阀的供给阀通路(25e)的开口面积来控制斗杆用第一流量控制阀(30)的开口面积，并且在回转装置马达(11)与斗杆缸(9)的联锁操作期间，随着回转装置操纵器的操作量的增加，将压差设定得较大，随着压差的增加，将斗杆用第一流量控制阀(30)的开口面积设定得较小。
Hydraulic control system for excavator-type construction machine
挖掘机型施工机器的液压控制系统
NAKAJIMA HIDEKI (Autor:in) / KIYASU KOICHI (Autor:in)
09.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02F
Baggern
,
DREDGING
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