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    • 2. 发明公开
    • DOUBLE-ARM WORKING MACHINE
    • DOPPELARM-ARBEITSMASCHINE
    • EP2022899A1
    • 2009-02-11
    • EP07706600.9
    • 2007-01-11
    • Hitachi Construction Machinery Co., Ltd
    • ISHII, AkinoriFUJISHIMA, KazuoTOMITA, Kunitsugu
    • E02F3/36E02F3/96E02F9/24
    • E02F3/384B25J9/0087E02F9/2004E02F9/2033E02F9/24G05B2219/39083G05B2219/43202G05B2219/45012
    • A double-arm working machine equipped with an upper swing structure 3 including an operator cabin 4, with a left swing post 7a and right swing post 7b provided in front of the upper swing structure 3, and with a left work front A and right work front B provided on the left swing post 7a and the right swing post 7b, respectively, such that the work fronts A, B each sway vertically, further includes an interference prevention controller which, pursuant to a differential angle between the left and right work fronts A, B and to a command signal from an operating device, generates an output signal to swing the swing posts 7a, 7b. The interference prevention controller is constructed such that if a differential angle range in which the left and right work fronts A, B are likely to come into contact with each other is defined as an interference danger area (N), and an assigned differential-angle range contiguous to the interference danger area is defined as a semi-interference danger area, when the differential angle between the work fronts A, B is present in the semi-interference danger area (M) and the work fronts A, B approach each other, the controller reduces a signal level of an output signal which swings the swing posts 7a, 7b, and slows down a swinging operation of the work front which swings towards the other work front. This prevents damage to the left and right work fronts due to interference between the work fronts.
    • 一种双臂加工机,其具有包括操作员舱4的上摆动结构3,其具有设置在上摆动结构3前方的左摆动臂7a和右摆动柱7b,以及左作业前侧A和右工作 前侧B分别设置在左摆动柱7a和右摆动柱7b上,使得垂直摆动的工作面A,B进一步包括防干扰控制器,其根据左右工作面之间的差角 A,B和来自操作装置的命令信号,产生摆动摆杆7a,7b的输出信号。 防干扰控制器被构造成使得如果左右工作面A,B彼此接触的差角范围被定义为干扰危险区域(N),并且分配的差角 定义为干扰危险区域的范围为半干扰危险区域,当半干扰危险区域(M)和工作面A,B之间的工作面A,B之间的差分角度彼此接近时 控制器降低摆动摆杆7a,7b摆动的输出信号的信号电平,并减慢工作前沿向另一个工作台摆动的摆动操作。 这可以防止由于工作面之间的干扰而损坏左右工作面。
    • 8. 发明公开
    • AREA-LIMITED DIGGING CONTROL DEVICE FOR CONSTRUCTION MACHINES
    • BAGGERSTEUERUNGSVORRICHTUNG MIT ARBEITSBEREICHSBEGRENZUNGFÜRBAUMASCHINEN
    • EP0711876A1
    • 1996-05-15
    • EP95920219.3
    • 1995-05-31
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • WATANABE, HiroshiHIRATA, ToichiHAGA, MasakazuYAMAGATA, EijiFUJISHIMA, KazuoADACHI, Hiroyuki
    • E02F3/42E02F3/43E02F3/84E02F3/85E02F9/20E02F9/22
    • E02F9/2033E02F3/435
    • An area-limited digging control device for a hydraulic shovel characterized in that an area where a front device (1A) can move is set in advance, that the position and attitude of the front device (1A) are calculated based on signals from angle detectors (8a-8c), that a target speed vector of the front device is calculated based on a detection signal from an operation lever device and a load pressure detected by pressure detectors (270a-271b), that when the front device stays within the set area adjacent to its boundary, a vector component in a direction of approaching the boundary of the set area is reduced, while when the front device stays out of the set area, the target speed vector is corrected such that the front device returns to the set area, and that the operation signal in accordance with its target speed vector is corrected by a load pressure and outputted to proportional solenoid valves (210a-211b), whereby area-limited digging can efficiently be performed and stable and accurate control can be performed irrespective of variation in the load pressure of a hydraulic actuator.
    • 一种用于液压挖掘机的区域限制挖掘控制装置,其特征在于,预先设置前部装置(1A)能够移动的区域,基于来自角度检测器的信号来计算前部装置(1A)的位置和姿态 (8a-8c),基于来自操作杆装置的检测信号和由压力检测器(270a-271b)检测到的负载压力来计算前部装置的目标速度矢量,当前部装置停留在组件 与其边界相邻的区域,减小了接近设定区域边界方向的矢量分量,而当前置设备停留在设定区域之外时,对目标速度矢量进行校正,使得前置设备返回到设定区域 区域,并且根据其目标速度矢量的操作信号通过负载压力被校正并输出到比例电磁阀(210a-211b),由此可以有效地执行面积限制的挖掘和稳定的交流 无论液压致动器的负载压力的变化如何,都可进行策略控制。