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1. 发明申请

WO2012087012A3 HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE INCLUDING EMERGENCY CONTROL UNIT FOR ELECTRIC HYDRAULIC PUMP 审中-公开
标题翻译：建筑机械的液压系统，包括用于电动液压泵的紧急控制单元
公开(公告)号：WO2012087012A3
公开(公告)日：2012-09-07
申请号：PCT/KR2011009907
申请日：2011-12-21
申请人： DOOSAN INFRACORE CO LTD , SHIN JUNG MUG , PARK DUCK WOO , JUNG WOO YONG
发明人： SHIN JUNG MUG , PARK DUCK WOO , JUNG WOO YONG
IPC分类号： F15B13/042 , E02F9/22 , F15B20/00
CPC分类号： F15B15/20 , E02F9/2235 , E02F9/2242 , E02F9/226 , E02F9/2282 , E02F9/2292 , E02F9/2296 , F15B20/00 , F15B20/002 , F15B2211/20515 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/2656 , F15B2211/30595 , F15B2211/3111 , F15B2211/3116 , F15B2211/3127 , F15B2211/3144 , F15B2211/6316 , F15B2211/6333 , F15B2211/6652 , F15B2211/6658 , F15B2211/7135 , F15B2211/7142 , F15B2211/8752
摘要： The present invention relates to a hydraulic system for a construction machine which uses an electric hydraulic pump, and more particularly, to a hydraulic system including an emergency control unit for temporarily operating the construction machine when an electric unit for controlling the electric hydraulic pump fails to operate. To this end, disclosed is the hydraulic system comprising the electric hydraulic pump, the electric control unit for controlling the electric hydraulic pump, and the emergency control unit, which operates when the electric control unit fails to operate, so as to temporarily control the electric hydraulic pump in accordance with to a pre-set condition, which can effectively respond to a low load work corresponding to a predetermined pressure (P1) and to a high load work corresponding to a higher pressure (P2), by the emergency control unit operating according to different optional conditions, based on the load (low load, high load) of the working machine that is required when the electric control unit fails to operate.
摘要翻译：本发明涉及一种使用电动液压泵的建筑机械的液压系统，更具体地涉及一种液压系统，该液压系统包括应急控制单元，用于当用于控制电动液压泵的电单元未能操作。为此，公开了一种液压系统，其包括电动液压泵，用于控制电动液压泵的电动控制单元以及当电动控制单元不能操作时操作的应急控制单元，以临时控制电动所述应急控制单元根据预设条件来控制液压泵，所述预设条件能够有效地响应于与预定压力（P1）对应的低负荷工作和对应于高压（P2）的高负荷工作根据不同的可选条件，根据电控单元不能工作时所需的工作机械的负载（低负载，高负载）。

2. 发明申请

WO2011078578A3 POWER CONTROL APPARATUS AND POWER CONTROL METHOD FOR CONSTRUCTION MACHINERY 审中-公开
标题翻译：建筑机械的功率控制装置及功率控制方法
公开(公告)号：WO2011078578A3
公开(公告)日：2011-11-10
申请号：PCT/KR2010009207
申请日：2010-12-22
申请人： DOOSAN INFRACORE CO LTD , SOHN WON SUN , PARK DUCK WOO , BANG JAE SEOK
发明人： SOHN WON SUN , PARK DUCK WOO , BANG JAE SEOK
IPC分类号： E02F9/22 , F02D29/04 , F15B11/028
CPC分类号： E02F9/2235 , E02F9/2066 , E02F9/2246 , E02F9/2296 , F02D29/04 , F15B2211/20523 , F15B2211/26 , F15B2211/6309 , F15B2211/633
摘要： According to one aspect of the present invention, a power control apparatus for construction machinery comprises: an engine (10) connected to a hydraulic pump (20) to drive the hydraulic pump (20); and a control unit (60), which calculates an engine load ratio, defined as a ratio of a load torque of the engine (10) to the maximum torque of the engine (10), calculated from an input target engine RPM, and calculates an engine RPM command value in proportion to the engine load ratio, such that the engine (10) can be driven at the target engine RPM, and outputs the calculated command value to the engine (10). According to another aspect of the present invention, a hydraulic pump control apparatus controls the hydraulic pump (20) driven by the engine (10), and comprises: a horsepower control unit (30), which varies the swash plate of the hydraulic pump (20) so as to vary the required horsepower of the hydraulic pump (20); a pressure sensor (50) for sensing a load pressure (Pd) of working oil discharged from the hydraulic pump (20); and a control unit (60), which calculates a target required horsepower of a pump from the load pressure (Pd) sensed by the pressure sensor (50), and controls the horsepower control unit (30) such that the required horsepower of the hydraulic pump (20) gradually becomes closer to the target required horse power of a pump during a preset time (?t).
摘要翻译：根据本发明的一个方面，用于工程机械的动力控制装置包括：连接到液压泵（20）以驱动液压泵（20）的发动机（10）和控制单元（60），其计算发动机负载比，所述发动机负载比被定义为从输入的目标发动机RPM计算出的发动机（10）的负载转矩与发动机（10）的最大转矩的比率，并且计算与发动机负载比例成比例的发动机RPM命令值，使得发动机（10）能够以目标发动机RPM被驱动，并且将计算出的命令值输出到发动机（10）。根据本发明的另一方面，液压泵控制装置控制由发动机（10）驱动的液压泵（20），并且包括：马力控制单元（30），其改变液压泵的斜盘 20）以改变所述液压泵（20）的所需马力; 检测从液压泵（20）排出的工作油的负载压力（Pd）的压力传感器（50）; 和控制单元（60），其根据由压力传感器（50）感测到的负载压力（Pd）来计算泵的目标所需马力，并且控制马力控制单元（30），使得所需的马力泵20在预设时间（Δt）内逐渐接近泵的目标所需马力。

3. 发明申请

WO2010074494A3 EMERGENCY ENGINE RPM CONTROL APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT 审中-公开
标题翻译：应用于重型建筑设备的应急发动机转速控制装置
公开(公告)号：WO2010074494A3
公开(公告)日：2010-09-23
申请号：PCT/KR2009007690
申请日：2009-12-22
申请人： DOOSAN INFRACORE CO LTD , PARK DUCK WOO , YUN HONG CHEOL
发明人： PARK DUCK WOO , YUN HONG CHEOL
IPC分类号： E02F9/20 , E02F9/24
CPC分类号： E02F9/24 , E02F9/2062 , E02F9/2246
摘要： The present invention relates to an emergency engine RPM control apparatus for heavy construction equipment, which can control the engine RPM in an emergency, i.e. upon the occurrence of an abnormality to a controller of the heavy construction equipment such as an excavator. The emergency engine RPM control apparatus of the present invention comprises: an equipment controller which generates a driving signal for transmitting the value applied from an operation dial to an engine controller to control an engine; a dashboard which is electrically connected to the engine controller, and which has a database of engine RPM control algorithms to enable a worker to select a desired engine RPM; and a connection switching means for electrically interconnecting the dashboard and the engine controller upon the occurrence of an abnormality to the operation dial or to the equipment controller.
摘要翻译：本发明涉及一种用于重型建筑设备的应急发动机RPM控制装置，其可以在紧急情况下，即在重型施工设备（例如挖掘机）的控制器发生异常时控制发动机RPM。本发明的应急发动机RPM控制装置包括：设备控制器，产生用于将从操作盘施加的值传送到发动机控制器以控制发动机的驱动信号; 仪表板，其电连接到发动机控制器，并且具有发动机RPM控制算法的数据库，以使工作人员能够选择期望的发动机RPM; 以及连接切换装置，用于在发生异常时将仪表板和发动机控制器电互连到操作旋钮或设备控制器。

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