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发明授权
CN101213376B 阀控制装置 失效 - 权利终止 转让

阀控制装置
摘要：
本发明提供一种阀控制装置，该阀控制装置能够防止在用电磁比例阀进行多个先导操作式控制阀的先导压力控制的情况下的联动操作性能的降低。第一、第二电磁比例阀(21、22)具有共用的杆操作量-动臂提升用先导压力特性的操作表(25)，并且被输入共用的动臂提升杆操作量。第三电磁比例阀(27)具有与第一、第二电磁比例阀共用的杆操作量-动臂提升用先导压力特性的操作表(25)，并且被输入与第四电磁比例阀(24)共用的斗杆收回杆操作量。第四电磁比例阀(24)具有与第一、第二和第三电磁比例阀(21、22、27)不同的杆操作量-斗杆收回用先导压力特性的操作表(26)，并且被输入与第三电磁比例阀共用的斗杆收回杆操作量。
摘要（英）：

A valve controller having an interlocking operation performance prevented from being degrading when pilot pressure control of a pilot operation control valve is made by using a proportional solenoid valve. First and second proportional solenoid valves (21, 22) have a common operation table (25) for lever operation amount-versus-boom lift pilot pressure characteristic and receive a common boom liftlever operation amount. A third proportional solenoid valve (27) has the operation table (25) for lever operation amount-versus-boom lift pilot pressure characteristic in common with the first and second proportional solenoid valves (21, 22) and receives a stick-in lever operation amount common to a fourth proportional solenoid valve (24). The fourth proportional solenoid valve (24) has an operation table (26) for lever operation amount-versus-stick-in pilot pressure characteristic different from that of the first, second, and third proportional solenoid valves (21, 22, 27) and receives the stick-in lever operation amount in common with the third proportional solenoid valve (27).

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