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    • 1. 发明申请
    • FLUID-POWERED PRECISION OSCILLATOR
    • 流体动力精密振荡器
    • WO1990008904A1
    • 1990-08-09
    • PCT/SE1990000030
    • 1990-01-15
    • ARCOS HYDRAULIK ABERICSON, JanÅHLANDER, Ulf
    • ARCOS HYDRAULIK AB
    • F15B15/04
    • B05B3/14F01L25/08F15B15/2823
    • The present invention relates to a fluid-powered precision oscillator having a cylindrical housing (3), a piston (9) displaceable in the housing and connected to a piston rod (8) extended through a front end wall (4) of the housing and a control means (11, 16, 22, 24) for automatically reversing the direction of movement of the piston and piston rod. According to the invention the piston rod (8) is hollow, a screw (11) being rotatably journalled in a rear end wall (5) of the housing (3) extends with a first end thereof into the hollow piston rod (8) and engages a nut (16) being fixed to the piston rod (8) and the screw at its other end carries a toothed code disk (22) cooperating with a reading fork (24) for feeding pulses corresponding to the movement of the piston (9) and of the piston rod (8) to a control circuit which in turn emits signals for actuating the oscillator (1) in dependence upon the pulses fed into the circuit.
    • 本发明涉及一种具有圆柱形壳体(3)的流体动力精密振荡器,可在壳体中移动并连接到延伸穿过壳体的前端壁(4)的活塞杆(8)的活塞(9),以及 用于自动地反转活塞和活塞杆的运动方向的控制装置(11,16,22,24)。 根据本发明,活塞杆(8)是中空的,可旋转地轴颈安装在壳体(3)的后端壁(5)中的螺钉(11)的第一端延伸到中空活塞杆(8)中, 接合固定到活塞杆(8)的螺母(16),并且在其另一端的螺钉承载与读取叉(24)配合的齿形码盘(22),用于馈送对应于活塞(9)的运动的脉冲 )和活塞杆(8)连接到控制电路,控制电路又根据馈送到电路中的脉冲发射用于致动振荡器(1)的信号。