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    • 1. 发明授权
    • Apparatus for controlling straight excavating operation with hydraulic
excavator
    • 用液压挖掘机控制直接挖掘作业的装置
    • US5598648A
    • 1997-02-04
    • US671795
    • 1991-09-09
    • Yukio MoriyaShigeru KinoshitaTakumi OnodaToshio Yokoyama
    • Yukio MoriyaShigeru KinoshitaTakumi OnodaToshio Yokoyama
    • E02F3/43E02F9/22E12F3/32
    • E02F3/437
    • The present invention is concerned with an apparatus for controlling a straight excavating operation with a hydraulic excavator such as a power shovel or the like machine including three working units, i.e., a boom, an arm and a bucket. When the straight excavating operation is performed, a hydraulic pressure of hydraulic oil in a hydraulic chamber on the boom lowering side of a boom cylinder is conducted to a drain tank while maintaining a predetermined set pressure, and a hydraulic pressure of hydraulic oil in a hydraulic chamber on the boom raising side of the boom cylinder is conducted to the drain tank via a check valve which serves to inhibit the hydraulic oil from flowing from the hydraulic chamber on the boom raising side of the boom cylinder to the drain tank, whereby the boom is held in the so-called floated state so as to enable a straight excavating operation to be performed merely by actuating the arm and bucket. In addition, according to the present invention, the apparatus is provided with an automatic bucket driving system for automatically controlling the present bucket angle so as to coincide with a preset bucket angle. This system contributes to remarkable reduction of a load to be borne by an operator while a straight excavating operation is performed.
    • PCT No.PCT / JP90 / 00986 Sec。 371日期1991年9月9日 102(e)1991年9月9日PCT PCT 1990年8月2日PCT公布。 公开号WO91 / 02125 日期1991年2月21日本发明涉及一种用铲斗等机械的液压挖掘机进行直线挖掘操作的装置,该装置包括三个工作单元,即起重臂,臂和铲斗。 当进行直接挖掘操作时,在保持预定的设定压力的同时将动臂缸的动臂下降侧的液压室中的液压油的液压压力导向排水槽,并且液压油中的液压油的液压 动臂缸的悬臂升起侧的腔室通过止回阀传导到排水槽,该止回阀用于抑制液压油从动臂缸的动臂抬起侧的液压室流向排水箱,由此动臂 被保持在所谓的浮动状态,以便仅通过致动臂和铲斗才能进行直线挖掘操作。 此外,根据本发明,该装置设置有自动铲斗驱动系统,用于自动控制当前的铲斗角度以与预设的铲斗角度一致。 该系统在执行直线挖掘操作时有助于显着减少由操作者承担的负载。
    • 2. 发明授权
    • Apparatus for controlling hydraulic pumps for construction machine
    • 控制建筑机械液压泵的装置
    • US5176504A
    • 1993-01-05
    • US820868
    • 1992-01-17
    • Yukio MoriyaShigeru KinoshitaTakumi OnodaToshio Yokoyama
    • Yukio MoriyaShigeru KinoshitaTakumi OnodaToshio Yokoyama
    • E02F9/22F04B49/06
    • E02F9/2235E02F9/2292E02F9/2296F04B49/065F04B2203/0209F04B2205/05F04B2207/041
    • An apparatus for controlling hydraulic pumps for a construction machine wherein the construction machine includes first and second hydraulic pumps adapted to be driven by an engine and hydraulic actuators hydraulically connected to the first and second hydraulic pumps via first and second actuating valves is disclosed. A controlling section calculates extra horse powers .DELTA.HP.sub.1 and .DELTA.HP.sub.2 based on reference allowable absorptive horse powers set relative to the first and second hydraulic pumps and actual absorptive horse powers (HP.sub.01) and (HP.sub.02) derived from the first and second hydraulic pumps. In addition, the controlling section calculates allowable discharge capacities (V.sub.1P) and (V.sub.2P) based on the number (N) of revolutions of the engines, pressures (P.sub.1) and (P.sub.2) of hydraulic oils discharged from the first and second hydraulic pumps, the extra horse powers .DELTA.HP.sub.1 and .DELTA.HP.sub.2 and allowable discharge capacities (V.sub.1P) and (V.sub.2P). Then, the controlling section selects a smaller one of a target discharge capacity and the allowable discharge capacity (V.sub.1P) and a smaller one of another target discharge capacity and the allowable discharge capacity (V.sub.2P) as minimum target discharge capacities (V.sub.1) and (V.sub.2). Thereafter, the controlling section controls swash plate angles of the first and second hydraulic pumps such that the minimum target discharge capacities (V.sub.1) and (V.sub.2) are correctly set corresponding to the first and second hydraulic pumps. Consequently, absorptive horse powers to be derived from the first and second hydraulic pumps can properly be controlled while a sum of the reference allowable absorptive horse powers is kept constant.
    • PCT No.PCT / JP90 / 00964 Sec。 371日期:1992年1月17日 102(e)日期1992年1月17日PCT提交1990年7月27日PCT公布。 公开号WO91 / 02162 日本1991年2月21日。一种用于控制建筑机械的液压泵的设备,其中建筑机械包括适于由发动机驱动的第一和第二液压泵和通过第一和第二液压连接到第一和第二液压泵的液压致动器 公开了致动阀。 控制部分基于相对于从第一和第二液压泵获得的第一和第二液压泵和实际吸收马力(HP01)和(HP02)设定的参考允许吸收马力来计算额外的马力DELTA HP1和DELTA HP2。 此外,控制部基于从第一和第二液压泵排出的液压油的发动机数量(N),压力(P1)和(P2),计算容许排放容量(V1P)和(V2P) 额外的马力DELTA HP1和DELTA HP2和容许放电容量(V1P)和(V2P)。 然后,控制部选择目标放电容量和容许放电容量(V1P)中较小的一个,另一个目标放电容量和容许放电容量(V2P)中的较小一个作为最小目标放电容量(V1)和(V2 )。 此后,控制部分控制第一和第二液压泵的斜盘角度,使得对应于第一和第二液压泵正确地设定最小目标排出容量(V1)和(V2)。 因此,可以适当地控制从第一和第二液压泵得到的吸收马力,同时参考允许吸收马力的总和保持恒定。
    • 3. 发明授权
    • Confluence valve circuit of a hydraulic excavator
    • 液压挖掘机的液压阀电路
    • US5148676A
    • 1992-09-22
    • US555494
    • 1990-10-12
    • Yukio MoriyaToshio YokoyamaFujitoshi TakamuraTakumi Onoda
    • Yukio MoriyaToshio YokoyamaFujitoshi TakamuraTakumi Onoda
    • E02F9/22F15B11/17
    • E02F9/2296E02F9/2242E02F9/2282E02F9/2292
    • A service valve circuit of a hydraulic excavator connected beforehand for use in controlling a special attachment in addition to a prescribed actuator control valve. The service valve circuit comprises a confluence valve 17 for performing electromagnetic proportional flow rate control, disposed in a confluence circuit 16 in communication with the section between inflow circuits 3F and 3R of two variable pumps 2F and 2R, an electrical switch 21 for switching the confluence valve 17 on or off according to a required flow rate and a volume 22 for adjusting the quantity of flow after passing through a confluence valve 17 in a range of flow for a maximum of one to two pumps. Since the requirement of confluence with respect to a required quantity of flow for a special attachment e and the quantity of confluence are set in advance, there will be no excess or shortage of the quantity of confluence. Therefore, the adjustment of flow rate using the number of rotations of an engine is not required and the action will not be slowed down even if switched from a special attachment control to a pivoting or traveling control.
    • PCT No.PCT / JP89 / 01201 Sec。 371 1990年10月10日第 102(e)1990年10月10日PCT PCT日期:1989年11月29日PCT公布。 出版物WO90 / 07031 日期:1990年6月28日。除了规定的执行器控制阀之外,预先连接用于控制特殊附件的液压挖掘机的维修阀回路。 维修阀电路包括用于执行电磁比例流量控制的汇流阀17,其布置在与两个可变泵2F和2R的流入回路3F和3R之间的部分连通的汇流回路16中,用于切换汇流的电开关21 阀17根据所需的流量开启或关闭,以及容积22,用于在最大流量为1至2个泵的流量范围内调节通过汇流阀17的流量。 既然关于特殊附件e所要求的流量和汇合量的汇合要求是事先设定的,汇合量不会过剩或不足。 因此,不需要使用发动机的转数调节流量,即使从特殊的附件控制切换到枢转或行驶控制,动作也不会减慢。
    • 5. 发明授权
    • Teaching and playback method for work machine
    • 作业机器教学与播放方法
    • US5274557A
    • 1993-12-28
    • US720502
    • 1991-07-29
    • Yukio MoriyaToshio YokoyamaFujitoshi TakamuraTakumi Onoda
    • Yukio MoriyaToshio YokoyamaFujitoshi TakamuraTakumi Onoda
    • E02F9/20E02F3/43E02F9/22F15B21/02G05D3/12G06F15/20
    • E02F3/438E02F9/2296
    • A teaching and playback method for a work machine that is applicable to construction equipment such as a hydraulic excavator to automatize operation. Data on the operator's operation of work machine actuators is stored, and the stored data is reproduced so that the same operation as that by the operator is automatically performed. The method is adapted to effect exactly the same operation as what has been taught even when, during playback, the load on the actuators has varied from the level applied during the teaching. For this purpose, the pump discharge amount and the amounts of flow supplied to the actuators which are present during the teaching are stored. During playback, when the load has varied, and the pump discharge has changed, the engine output is controlled in such a manner that the actual pump discharge becomes equal to the amount stored during the teaching. When the flows supplied to the actuators have changed, the flow control valve provided in an inflow circuit is controlled in such a manner that the actual flows become equal to the amounts stored during the teaching. Thus, even when the load during playback has varied from the level during the teaching, the actuators can operate exactly as taught, without involving a discrepancy in the locus of operation.
    • PCT No.PCT / JP89 / 01270 Sec。 371日期1991年7月29日 102(e)日期1991年7月29日PCT 1989年12月18日PCT PCT。 出版物WO90 / 07032 日期:1990年6月28日。一种适用于液压挖掘机等施工设备自动化操作的作业机械的教学播放方法。 存储有关作业机械执行器的操作者的操作的数据,并且再现存储的数据,从而自动执行与操作者相同的操作。 该方法适于实现与所教导的完全相同的操作,即使在播放期间,致动器上的负载与在教学期间施加的水平不同。 为此,存储泵排出量和供给到执行器期间的流量。 在重放期间,当负载变化并且泵排放改变时,发动机输出被控制为使得实际的泵排出量等于在教学期间存储的量。 当提供给致动器的流动已经改变时,设置在流入回路中的流量控制阀被控制为使得实际流量变得等于在教学期间存储的量。 因此,即使在回放期间的负载与教学期间的水平不同,致动器可以如所教导的那样精确地操作,而不涉及操作轨迹的差异。