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JPH11280705A Hydraulic valve operation device 失效
标题翻译：液压阀操作装置
公开(公告)号：JPH11280705A
公开(公告)日：1999-10-15
申请号：JP8117398
申请日：1998-03-27
申请人： Shin Caterpillar Mitsubishi Ltd , 新キャタピラー三菱株式会社
发明人： YOSHINO KAZUNORI , NAKANO TAKAO , TANAKA AKIO , FUTAHASHI KENSUKE , TAMURA MANABU , YAMAMOTO KEISUKE
IPC分类号： F15B13/044 , F16K3/24 , F16K11/07
摘要： PROBLEM TO BE SOLVED: To provide a moving quantity of a control spool of a hydraulic valve according to a manipulated variable of an operation means by outputting pilot pressure oil of pressure in proportion to a displacement quantity of a pilot spool by a fluid pressure control valve.
SOLUTION: A command voltage in proportion to a manipulated variable is outputted according to the operation direction by an operation lever 42a of an operation means 40 so that a command electric current in proportion to this is outputted to a driving coil 20 of a fluid pressure control valve 2 from a servo amplifier 44. A coil 20 generates driving force of the size and the direction in proportion to the command electric current to move a pilot spool 16 of a pilot valve 10 up to a place for balancing spring force of a neutral spring 18 and the driving force. Pilot oil pressure in proportion to a displacement quantity of the spool 16 is outputted to a control cylinder 30 so that a control piston 34 moves a control spool 61 up to a place for balancing with the spring force of the neutral spring by the pilot oil pressure to thereby obtain a movement of the spool 61 in proportion to the manipulated variable of the operation means 40.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：根据操作装置的操作变量提供液压阀的控制阀芯的移动量，通过流体压力控制阀输出与先导阀芯的位移量成比例的压力的先导压力油。解决方案：通过操作装置40的操作杆42a根据操作方向输出与操作变量成比例的指令电压，使得与其成比例的指令电流被输出到流体压力控制的驱动线圈20 线圈20产生与指令电流成比例的尺寸和方向的驱动力，以将先导阀10的先导阀芯16移动到用于平衡中性弹簧的弹簧力的位置 18和驱动力。与阀芯16的位移量成比例的先导油压力被输出到控制缸30，使得控制活塞34通过先导油压力将控制阀芯61移动到与中性弹簧的弹簧力平衡的位置从而获得与操作装置40的操作变量成比例的滑阀61的运动。

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