Method for reducing the piston speed, especially in the piston and
cylinder assemblies of an excavating machine, and device for carrying
out the method
    1.
    发明授权
    Method for reducing the piston speed, especially in the piston and cylinder assemblies of an excavating machine, and device for carrying out the method 失效
    用于降低活塞速度的方法,特别是在挖掘机的活塞和气缸组件中,以及用于执行该方法的装置

    公开(公告)号:US4896582A

    公开(公告)日:1990-01-30

    申请号:US216542

    申请日:1988-07-08

    摘要: The invention relates to a method and a device for reducing the piston speed in a piston and cylinder assembly (1), as the piston approaches the end position. The piston end position is sensed, and a signal is generated for starting the end position dampening. Dampening is effected in two steps. In the first step (14), a time delay is provided and in the next step (15), the actual braking (retardation) of the piston is effected.The invention also comprises an electronic braking device comprising a dampening activation unit (13) which is connected to transducers (6), a braking delay unit (14) connected to the unit (13) and also to the control lever (5) at issue and a reference signal source, as well as a braking unit (15) connected to the delay unit (14) and adapted, upon activation, to provide a signal (U) to a setting system (3) for controlling the supply of pressure fluid to the piston and cylinder assembly (1).

    摘要翻译: PCT No.PCT / SE86 / 00003 Sec。 371日期:1988年9月8日 102(e)日期1988年9月8日PCT提交1986年1月8日PCT公布。 公开号WO87 / 04220 日期1987年7月16日。本发明涉及一种当活塞接近终点位置时减小活塞和气缸组件(1)中的活塞速度的方法和装置。 感测到活塞的最终位置,并产生一个信号以启动末端位置的衰减。 阻尼在两个步骤中实现。 在第一步骤(14)中,提供时间延迟,并且在下一步骤(15)中,实现活塞的实际制动(延迟)。 本发明还包括电子制动装置,其包括连接到换能器(6)的阻尼激活单元(13),连接到所述单元(13)的制动延迟单元(14)以及所述控制杆(5) 以及参考信号源,以及连接到延迟单元(14)并且在激活时适于向设定系统(3)提供信号(U)的制动单元(15),用于控制压力流体的供应 到活塞和气缸组件(1)。