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热词
    • 3. 发明授权
    • Hydraulic jarring mechanism
    • 液压装载机
    • US3729058A
    • 1973-04-24
    • US3729058D
    • 1970-10-21
    • KAJAN SPECIALTY CO INC
    • ROBERTS P
    • E21B31/113E21B1/10E21B23/00
    • E21B31/113
    • A bypass passage for displaced fluid in an hydraulic jarring device is equipped with a pressure responsive regulator sleeve which automatically moves axially within the fluid reservoir of the device to restrict fluid flow through the passage as required to maintain a relatively constant pressure in the compression chamber of the reservoir during an initial portion of the upstroke. An externally threaded plug is set within a threaded bore extending through the sleeve between the compression chamber and the bypass passage. The thread peaks on the plug are flattened which produces a helical orifice passage between the plug and bore which may be adjusted in length by rotating the plug which in turn establishes the high pressure value in the compression chamber. A thin wall segment supporting a portion of the plug threads moves radially in response to pressure changes to vary the cross-sectional dimensions of the orifice to assist in pressure regulation.
    • 用于液压振动装置中的位移流体的旁路通道配备有压力响应调节器套筒,该压力响应调节器套筒在装置的流体储存器内自动沿轴向移动,以限制流体通过通道的流体,以在压缩室中保持相对恒定的压力 在上行中的初始部分的水库。 外螺纹塞子被设置在螺纹孔内,该螺纹孔在压缩室和旁路通道之间延伸穿过套筒。 塞子上的螺纹峰值变平,其在塞和孔之间产生螺旋孔通道,其可以通过旋转塞子来调节长度,从而在压缩室中建立高压值。 支撑插塞螺纹的一部分的薄壁部分响应于压力变化而径向地移动,以改变孔口的横截面尺寸以辅助压力调节。