会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明公开
    • HYDRAULIC CONTROLLER
    • Hydraulische Steuerung
    • EP0773370A1
    • 1997-05-14
    • EP96904303.3
    • 1996-03-01
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • SUGIYAMA, GenrokuHIRATA, Toichi
    • F15B20/00
    • F15B21/045F04B49/065F04B49/08F04B49/10F04B2205/05F04B2205/062F04B2205/11F15B20/002
    • In a hydraulic controller, in order to easily provide a hydraulic back-up in the event of a failure of an electric system while maintaining a benefit of electrical control using a control unit (13) when controlling a displacement of a hydraulic pump (1) in accordance with a property of a hydraulic driving system, a pump regulator (16) is constructed such that the tilt θ of a swash plate (1a) increases as the pressure of a second oil pressure signal P.c decreases, the pump regulator is characterized in that a negative control pressure can be used instead of the second oil pressure signal, and the properties of a fixed throttle (10) and the pump regulator spring (18d) are set such that the pump regulator can be operated within an operation range of the negative control pressure. In a controlling unit (13), a negative control pressure Pc1 corrected in a block (102) is made to be a target value of the second oil pressure signal, a second electric signal E corresponding to the target value is obtained, and the operational range of a second oil pressure signal generated by a solenoid proportional valve (15) is made substantially equal to the negative control pressure.
    • 在液压控制器中,为了在控制液压泵(1)的位移时使用控制单元(13)保持电气控制的好处,在电气系统故障的情况下容易地提供液压备用, 根据液压驱动系统的性质,泵调节器(16)构造成使得倾斜和倾斜; 斜盘(1a)的压力随着第二油压信号Pc的压力减小而增加,该泵调节器的特征在于可以使用负控制压力代替第二油压信号,以及固定节流阀 10)和泵调节器弹簧(18d)被设置为使得泵调节器可以在负控制压力的操作范围内操作。 在控制单元(13)中,将在块(102)中校正的负控制压力Pc1设定为第二油压信号的目标值,获得与目标值对应的第二电信号E, 由电磁比例阀(15)产生的第二油压信号的范围基本上等于负控制压力。