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    Area limiting excavation control system for construction machine
    2.
    发明公开
    Area limiting excavation control system for construction machine 失效
    Baggersteuersystem mit ArbeitsbereichbegrenzungfürBaumaschinen

    公开(公告)号：EP0747541A1

    公开(公告)日：1996-12-11

    申请号：EP96109183.2

    申请日：1996-06-07

    申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

    发明人： Yamagata, Eiji ,  Fujishima, Kazuo, Hitachikenki Tsukuba-ryo, 4-1 ,  Adachi, Hiroyuki ,  Watanabe, Hiroshi ,  Haga, Masakazu

    IPC分类号： E02F9/20 ,  E02F3/43

    CPC分类号： E02F3/437 ,  E02F9/2033

    摘要： In an area limiting excavation control system for construction machines such as hydraulic excavators, excavation is smoothly and efficiently carried out within a limited area by setting an area beforehand where a front attachment (1A) is movable, calculating the position and posture of the front attachment (1A) by a control unit (9) based on signals from angle sensors (8a) to (8c), calculating a limit value of the component of the boom-dependent bucket tip speed vertical to the boundary of the set area so that when the front attachment is inside the set area near the boundary thereof, the moving speed of the front attachment in the direction vertical to the boundary of the set area is restricted, and when the front attachment is outside the set area, it is returned to the set area, and modifying a boom operation signal so as to prevent the boom-dependent bucket tip speed from exceeding the limit value.

    摘要翻译： 在液压挖掘机等施工机械挖掘控制系统的区域限定中，通过预先设置前附件（1A）可移动的区域，在有限的区域内平稳有效地进行挖掘，计算前附件的位置和姿势 根据来自角度传感器（8a）至（8c）的信号，通过控制单元（9）来计算悬臂相关铲斗前端速度的分量的极限值， 前附件在其边界附近的设定区域内，前置附件在与设定区域的边界垂直的方向上的移动速度受到限制，并且当前附件在设定区域外时，返回到 并且改变起重臂操作信号，以防止悬臂相关铲斗前端速度超过限制值。

    Front control system, area setting method and control panel for construction machine
    7.
    发明公开
    Front control system, area setting method and control panel for construction machine 失效
    前方控制系统，区域设定方法及工程机械控制面板

    公开(公告)号：EP0816578A3

    公开(公告)日：1998-09-30

    申请号：EP97110292.6

    申请日：1997-06-24

    申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

    发明人： Fujishima, Kazuo, c/o Hitachikenki Tsukuba-ryo ,  Watanabe, Hiroshi ,  Haga, Masakazu ,  Nakagawa, Takashi, c/o Hitachikenki Tsukuba-ryo

    IPC分类号： E02F9/26 ,  E02F3/43 ,  E02F9/20

    CPC分类号： E02F9/26 ,  E02F3/435 ,  E02F9/2033 ,  Y10T477/69387

    摘要： A setting device (7) comprises a direct setting switch (7a) for instructing the direct teaching setting, a numeral input key (7b) consisted of up- and down-keys (7b1, 7b2) for instructing the numeral input setting, a setting changeover switch (7c1) for changing over a setting mode from the direct teaching setting to the numeral input setting, an LED (7c2) lighting up when the setting changeover switch (7c1) is pushed, an area limiting switch (7d1) for staring the area limiting excavation control, an LED (7d2) lighting up when the area limiting switch (7d1) is pushed, and a display screen (7e) comprised of liquid crystals, etc. for indicating the position of a bucket end of a front device (1A) in terms of a numeral value when the setting changeover switch (7c1) is not pushed, and indicating the numeral value input with the numeral input setting when the setting changeover switch (7c1) is pushed. In a front control system for a construction machine, therefore, the operator can always select optimum area setting means in any of work sites and take appropriate and prompt actions for various types of works.

    摘要翻译： 设定装置（7）包括用于指示直接示教设定的直接设定开关（7a），由指示数字输入设定的上下键（7b1,7b2）构成的数字输入键（7b） 切换开关（7c1），用于将设定模式从直接示教设定切换到数字输入设定;当按下设定切换开关（7c1）时点亮的LED（7c2）;用于启动 区域限制挖掘控制装置，按压区域限制开关（7d1）时点亮的LED（7d2），以及用于指示前部装置的铲斗端部位置的由液晶等构成的显示画面（7e） （7c1）未被按下时的数值，并且当设置转换开关（7c1）被按下时指示输入了数字输入设置的数值。 因此，在建筑机械的前部控制系统中，操作者可以始终在任何工作场所选择最佳的区域设定装置，并且针对各种类型的工作采取适当和迅速的动作。

    Front control system for construction machine and oil temperature indicator
    8.
    发明公开
    Front control system for construction machine and oil temperature indicator 失效
    Front Baumaschine und Temperaturanzeiger

    公开(公告)号：EP0816579A3

    公开(公告)日：1998-04-01

    申请号：EP97110488.0

    申请日：1997-06-26

    申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

    发明人： Fujishima, Kazuo, c/o Hitachikenki Tsukuba-ryo ,  Watanabe, Hiroshi ,  Haga, Masakazu ,  Nakagawa, Takashi, c/o Hitachikenki Tsukuba-ryo

    IPC分类号： E02F9/26 ,  E02F3/43 ,  E02F9/22

    CPC分类号： E02F3/437 ,  E02F9/2033 ,  E02F9/226 ,  E02F9/26

    摘要： In an oil temperature detecting/calculating portion 9p, threshold values T 1 , T 2 are set beforehand to divide a range of oil temperature into a first oil temperature range a representing the lowest level, a second oil temperature range b representing a relatively low level, and a third oil temperature range c representing a normal level. The calculating portion 9p executes an alarm control process for making the alarm lamp 14 light up continuously when the detected oil temperature is in the first oil temperature range a , making the alarm lamp 14 blink when it is in the second oil temperature range b , and making the alarm lamp 14 turn out when it is in the third oil temperature range c . This enables a front control system for a construction machine to perform front control accurately and safely even when the temperature of hydraulic oil is low.

    摘要翻译： 在油温检测/计算部分9p中，预先设定阈值T1，T2以将油温范围分为表示最低水平的第一油温范围a，代表相对低水平的第二油温范围b， 第三油温范围c代表正常水平。 计算部分9p执行报警控制处理，当检测到的油温处于第一油温范围a时使报警灯14连续点亮，使报警灯14处于第二油温范围b时闪烁，并且 使报警灯14处于第三油温范围c时熄灭。 这使得即使在液压油的温度低的情况下，建筑机械的前部控制系统也能够准确，安全地执行前部控制。

    Locus control system for construction machines
    9.
    发明公开
    Locus control system for construction machines 失效
    Einrichtung zum Steuern des geometrischen OrtesfürBaumaschinen

    公开(公告)号：EP0803614A1

    公开(公告)日：1997-10-29

    申请号：EP97106649.3

    申请日：1997-04-22

    申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

    发明人： Haga, Masakazu ,  Watanabe, Hiroshi ,  Fujishima, Kazuo, Hitachikenki Tsukuba-ryo

    IPC分类号： E02F3/43

    CPC分类号： E02F3/437 ,  E02F9/2025

    摘要： In a locus control system of hydraulic excavators, a target locus for a front device is set beforehand. A control unit calculates a position and posture of the front device based on signals from angle sensors, and calculates a target speed vector of the front device based on signals from control lever devices. Through this calculation process, the control unit maintains the target speed vector as it is when the front device is not near rom the target locus, and modifies the target speed vector to a vector pointing to a second point on the target locus advanced in the excavating direction by a second distance from a first point locating on the target locus at a minimum distance from a tip of the front device, when the front device is near the target locus. As a result, the tip of the front device can be settled to the target locus in a relatively quick, stable and highly accurate manner through a satisfactory path in match with a human feeling.

    摘要翻译： 在液压挖掘机的轨迹控制系统中，事先设定前置装置的目标轨迹。 控制单元基于来自角度传感器的信号来计算前置装置的位置和姿势，并且基于来自控制杆装置的信号来计算前方装置的目标速度矢量。 通过该计算处理，当前方装置不靠近目标轨迹时，控制单元维持目标速度矢量，并且将目标速度矢量修改为指向在挖掘中提前的目标轨迹上的第二点的矢量 方向距离位于目标轨迹上的第一点距离前部装置的尖端的最小距离处，当前部装置靠近目标轨迹时。 结果，通过与人的感觉匹配的令人满意的路径，能够以相对快速，稳定且高度准确的方式将前部装置的尖端安置到目标轨迹。