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公开(公告)号：US09618018B2
公开(公告)日：2017-04-11
申请号：US14777658
申请日：2014-03-26
Applicant: DOOSAN INFRACORE CO., LTD.
Inventor： Min Ha An , Woo Yong Jung , Yong Lak Cho , A Reum Seo , Dal Sik Jang , Kwang Ho Lim
CPC classification number: F15B11/10 , E02F9/2217 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B11/17 , F15B13/042 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20561 , F15B2211/20569 , F15B2211/20576 , F15B2211/27 , F15B2211/30515 , F15B2211/3057 , F15B2211/30595 , F15B2211/31529 , F15B2211/327 , F15B2211/613 , F15B2211/625 , F15B2211/6346 , F15B2211/7142 , F15B2211/88
Abstract: The present disclosure relates to a hydraulic system for construction equipment, and more particularly, to a hydraulic system, in which an actuator is controlled by a pump/motor. The hydraulic system for construction equipment according to the present disclosure includes logic valves in first and second hydraulic lines provided to an actuator, respectively, and when it is desired to operate the actuator in a state where an operation of the actuator is stopped by closing the logic valves, a pressure difference may be resolved by increasing pressure in sections of a pump/motor and the logic valves in advance even if a load is applied to the actuator, and thus the actuator may implement a desired operation without being affected by the load. That is, it is possible to improve operation controllability of the actuator.
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公开(公告)号：US09580888B2
公开(公告)日：2017-02-28
申请号：US14766181
申请日：2014-02-06
Applicant: Doosan Infracore Co., Ltd.
Inventor： Min Ha Ahn , Woo Yong Jung , Dal Sik Jang , Hyeon Sik Ahn , Kwang Ho Lim
CPC classification number: E02F9/2242 , E02F9/2228 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20576 , F15B2211/265 , F15B2211/71 , F15B2211/78
Abstract: An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
Abstract translation: 本说明书的一个示例性实施例涉及一种用于相对于操作模式的改变来控制用于挖掘机的液压泵的装置，该装置包括：操作单元，被配置为根据操作者的操作生成操作信号， 并包括操纵杆或踏板; 油流供给单元，其构造成向致动器供给油，以驱动对应于所述操作信号的多个致动器，并且包括多个泵和多个逻辑阀; 以及控制单元，其被配置为根据操作信号，考虑到致动器的使用频率和负载相对于预定操作模式的改变而针对每个操作使用优先级算法来控制油流供给单元。
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公开(公告)号：US20150376871A1
公开(公告)日：2015-12-31
申请号：US14766181
申请日：2014-02-06
Applicant: DOOSAN INFRACORE CO., LTD.
Inventor： Min Ha Ahn , Woo Yong Jung , Dal Sik Jang , Hyeon Sik Ahn , Kwang Ho Lim
IPC: E02F9/22
CPC classification number: E02F9/2242 , E02F9/2228 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20576 , F15B2211/265 , F15B2211/71 , F15B2211/78
Abstract: An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
Abstract translation: 本说明书的一个示例性实施例涉及一种用于相对于操作模式的改变来控制用于挖掘机的液压泵的装置，该装置包括：操作单元，被配置为根据操作者的操作生成操作信号， 并包括操纵杆或踏板; 油流供给单元，其构造成向致动器供给油，以驱动对应于所述操作信号的多个致动器，并且包括多个泵和多个逻辑阀; 以及控制单元，其被配置为根据操作信号，考虑到致动器的使用频率和负载相对于预定操作模式的改变而针对每个操作使用优先级算法来控制油流供给单元。
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