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    • 2. 发明授权
    • Apparatus for controlling dynamic characteristics of press load
    • 用于控制压力载荷动态特性的装置
    • US4599887A
    • 1986-07-15
    • US758125
    • 1985-07-23
    • Akio AsaiYukito AndoKazunari Kirii
    • Akio AsaiYukito AndoKazunari Kirii
    • B21D24/14B21J9/18
    • B21D24/14
    • An apparatus, for controlling dynamic characteristics of a press load, facilitates changing the balance between a hydraulic pressure and a pneumatic pressure in a hydroblank holder, wherein a first pneumatic device which supplies a standard pneumatic pressure with which a predetermined dynamic load can be obtained and a second pneumatic device which supplies a pneumatic pressure higher or lower than the standard pneumatic pressure are provided in parallel in a pneumatic device which supplies pneumatic pressure to the hydroblank holder and the first and second pneumatic devices are switched in accordance with a press stroke and, when the switching is made to low pressure, an accumulator is depressurized by the operation of a depressurizing device.
    • 一种用于控制压力负载的动态特性的装置,有助于改变液压支架中的液压和气动压力之间的平衡,其中提供可获得预定动态载荷的标准气压的第一气动装置和 提供高于或低于标准气压的气动压力的第二气动装置并联设置在气动装置中,该气动装置向液压支架提供气动压力,并且第一和第二气动装置根据压力冲程切换, 当切换为低压时,通过减压装置的操作使蓄能器减压。