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    • 1. 发明专利
    • エンジン始動制御装置
    • 发动机起动控制装置
    • JP2014227948A
    • 2014-12-08
    • JP2013109235
    • 2013-05-23
    • 株式会社神戸製鋼所Kobe Steel Ltdコベルコ建機株式会社Kobelco Contstruction Machinery Ltd
    • MORITA HIROSHINANJO TAKAOMAEKAWA TOMOHITO
    • F02N7/00
    • 【課題】エンジン始動時の衝撃音を抑制し、かつ、エンジン始動性の悪化を抑制する。【解決手段】エンジン11始動時に、圧力センサ37が検出した圧力P1が所定圧力P1b未満の場合(S21でNOの場合)、放出弁35の開度が第1開度A1となるように制御される(S25)。エンジン11始動時に、圧力センサ37が検出した圧力P1が所定圧力P1b以上の場合(S21でYESの場合)、放出弁35の上流側と下流側との差圧&Dgr;Pが所定差圧&Dgr;Pa未満の間は、第1開度A1よりも小さい第2開度A2となるように放出弁35の開度が制御される(S24)とともに、差圧&Dgr;Pが所定差圧&Dgr;Pa以上となった時には、放出弁35の開度が第2開度A2よりも大きくなるように制御される(S25)。【選択図】図2
    • 要解决的问题:为了抑制发动机起动时的冲击噪音,并且抑制发动机起动性的劣化。解决方案:在发动机11启动时,将释放阀35的开度控制为第一开度A1(S25),当a 由压力传感器37检测到的压力P1小于规定压力P1b(S21;否)。 在发动机11的启动中,当由压力传感器37检测到的压力P1等于或大于规定压力P1b(S21;是)时,释放阀35的开度被控制为小于 第一开口A1(S24),而在释放阀35的上游侧和下游侧之间的压差Dgr; P小于规定的压差Dgr; Pa,并且将释放阀35的开度控制为 大于第二开口A2(S25),当差压Dgr; P等于或大于规定压差Dgr; Pa时。
    • 3. 发明专利
    • Hydraulic control apparatus of work machine
    • 工程机械液压控制装置
    • JP2013249849A
    • 2013-12-12
    • JP2012122818
    • 2012-05-30
    • Kobe Steel Ltd株式会社神戸製鋼所Kobelco Contstruction Machinery Ltdコベルコ建機株式会社
    • SUGANO NAOKIMAEKAWA TOMOHITOKOGA NOBUHIROYOSHIHARA HIDEKI
    • F15B11/02E02F9/22F15B11/00F15B11/17
    • PROBLEM TO BE SOLVED: To provide an apparatus controllable to allow a main actuator and an option actuator of a work machine to operate at proper speeds.SOLUTION: An apparatus includes: first and second hydraulic pumps 11, 12; a first main supply oil passage 25 and a first main control valve 15, which introduce discharge oil of the first hydraulic pump 11 to a main actuator 7; an option supply oil passage 26 and an option control valve 16, which introduce the discharge oil of the first hydraulic pump 11 to an option actuator 8; a second main supply oil passage 29 and a second option control valve 19, which introduce discharge oil of the second hydraulic pump 12 to the main actuator 7; a main operation device 31 for the main actuator; an option operation device 32 for the option actuator; and a supply switching device 40-42, 60 shutting off supply of hydraulic oil to the main actuator 7 through the first main supply oil passage 25 when simultaneous operation of both operation devices 31, 32, and allowing the supply when operation of only the main operation device 31.
    • 要解决的问题:提供可控制的装置,以允许作业机械的主致动器和选件致动器以适当的速度运行。解决方案:一种装置包括:第一和第二液压泵11,12; 第一主供油路25和第一主控制阀15,其将第一液压泵11的排出油引入主致动器7; 选择供给油路26和选择控制阀16,其将第一液压泵11的排出油引入选择促动器8; 第二主供油路29和第二选择控制阀19,其将第二液压泵12的排出油引入主致动器7; 用于主致动器的主操作装置31; 用于选项致动器的选项操作装置32; 供应切换装置40-42,60同时操作两个操作装置31,32,通过第一主供油路25关闭向主致动器7供给液压油,并且仅在主操作 操作装置31。
    • 4. 发明专利
    • エンジン始動装置
    • 发动机起动装置
    • JP2014227949A
    • 2014-12-08
    • JP2013109236
    • 2013-05-23
    • 株式会社神戸製鋼所Kobe Steel Ltdコベルコ建機株式会社Kobelco Contstruction Machinery Ltd
    • MAEKAWA TOMOHITONANJO TAKAO
    • F02N7/00E02F9/00E02F9/22F15B11/00F15B21/14
    • 【課題】パイロット油圧源を大きくする必要なく、エンジンの始動性を向上させる。【解決手段】第2アキュームレータ45は、カット弁29及び回生モータ31にパイロット油圧を供給する。回生モータ31は、入力されるパイロット油圧が大きいほど容量が大きくなるように構成される。カット弁29は、パイロット油圧入力状態のときに閉状態、パイロット油圧非入力状態のときに開状態、となるように構成される。エンジン10を停止状態から始動させるエンジン10始動時には、放出弁35が開状態、かつ、カット弁29が開状態となるように制御される。【選択図】図1
    • 要解决的问题:提供一种用于提高发动机起动性的发动机起动装置,而不需要扩大先导油压源。解决方案:第二蓄能器45将先导油压送入截止阀29和再生电动机31 再生电动机31构成为随着输入的先导油压越高,容量越大。 切断阀29构成为在先导油压输入状态时为闭合状态,并且在先导油压的非输入状态时为断开状态。 在用于从停止状态起动发动机10的发动机10的启动时,控制使得释放阀35成为打开状态并使得切断阀29成为打开状态。
    • 5. 发明专利
    • Hydraulic control device of work machine
    • 工程机械液压控制装置
    • JP2014148994A
    • 2014-08-21
    • JP2013016375
    • 2013-01-31
    • Kobe Steel Ltd株式会社神戸製鋼所Kobelco Contstruction Machinery Ltdコベルコ建機株式会社
    • SUGANO NAOKIMAEKAWA TOMOHITOYOSHIHARA HIDEKI
    • F15B11/08E02F9/22F15B11/02F15B11/17
    • PROBLEM TO BE SOLVED: To provide a device capable of controlling a main actuator and an optional actuator of a work machine to be actuated at a proper velocity.SOLUTION: The device comprises: first and second pumps 11, 12; a first main control valve 15 for introducing emission oil of the first pump 11 to a main actuator 7; an optional control valve 16 for introducing the emission oil of the first pump 11 to an optional actuator 8; a second main control valve 19 for introducing the emission oil of the second pump 12 to the main actuator 7; and throttle switching devices 37A, 37B, 60 for throttling a flow passage area of a first main supply oil passage for supplying working oil to the main actuator 7 through the first main control valve 15 in operating the main actuator 7 and the optional actuator 8 at the same time, and cancelling the throttle when the optional actuator 8 is not operated and only the main actuator 7 is operated.
    • 要解决的问题:提供一种能够以适当的速度控制主致动器和作业机械的可选致动器的装置。解决方案:该装置包括:第一和第二泵11,12; 用于将第一泵11的排放油引入主致动器7的第一主控制阀15; 用于将第一泵11的排出油引导到可选的致动器8的可选控制阀16; 用于将第二泵12的排放油引入主致动器7的第二主控制阀19; 以及节流切换装置37A,37B,60,用于在操作主致动器7和可选促动器8时,通过第一主控制阀15节流用于向主致动器7供给工作油的第一主供油路的流路面积 同时,并且当可选促动器8不被操作并且仅主致动器7被操作时取消节气门。
    • 6. 发明专利
    • Engine control apparatus for working machine
    • 发动机控制装置
    • JP2012122385A
    • 2012-06-28
    • JP2010272943
    • 2010-12-07
    • Kobe Steel LtdKobelco Cranes Co Ltdコベルコクレーン株式会社株式会社神戸製鋼所
    • SUGANO NAOKIMAEKAWA TOMOHITOKOBAYASHI TAKAHIRO
    • F02D29/00F02D11/10
    • F02D28/00
    • PROBLEM TO BE SOLVED: To allow engine speed to be determined even when an accelerator and an operation lever are simultaneously operated, improve fuel economy, and control engine speed according to operation of the accelerator during operation of the working device.SOLUTION: This engine control apparatus 1 of a working machine includes a control part 32 for calculating a maximum engine speed set value corresponding to an operation amount of the operation levers 12a and 14a as an operation lever side engine speed set value EN1, based on an operation engine speed correlation function, calculating an accelerator side engine speed set value EN2 corresponding to an operation amount of an accelerator pedal 10a based on an accelerator engine speed correlation function, selecting a lower one of the calculated operation lever side engine speed set value EN1 and the accelerator side engine speed set value EN2, and causing a governor 30 to control the engine speed of an engine 2 so that the engine speed of the engine 2 becomes the selected engine speed set value.
    • 要解决的问题:即使在同时操作加速器和操作杆的同时也能够确定发动机速度,可以提高燃油经济性,并且在工作装置的运转中根据加速器的运转来控制发动机转速。 解决方案:作业机的发动机控制装置1包括控制部32,用于计算与作为操作杆侧发动机转速设定值EN1的操作杆12a,14a的操作量对应的最大发动机转速设定值, 基于操作引擎速度相关函数,基于加速器转速相关函数来计算与加速器踏板10a的操作量对应的加速器侧发动机转速设定值EN2,选择计算出的操作杆侧发动机转速设定值 值EN1和加速器侧发动机转速设定值EN2,并且使调速器30控制发动机2的发动机转速,使得发动机2的发动机转速成为选择的发动机转速设定值。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Hydraulic driving device for working machine
    • 液压驱动装置
    • JP2013124763A
    • 2013-06-24
    • JP2011275726
    • 2011-12-16
    • Kobelco Cranes Co Ltdコベルコクレーン株式会社Kobe Steel Ltd株式会社神戸製鋼所
    • KONDO DAIYUMICHIDA TAKAHARUYAMAGATA KATSUMIHORI NAOTOKITAKADO NAOYAMAEKAWA TOMOHITOSUGANO NAOKI
    • F15B11/04B66D1/44F15B11/08
    • F15B9/08F15B11/044F15B21/047F15B2211/3116F15B2211/3157F15B2211/329F15B2211/353F15B2211/46F15B2211/7058F15B2211/75F15B2211/761F15B2211/8609
    • PROBLEM TO BE SOLVED: To provide a hydraulic driving device for working machine, preventing an excessive decrease in pressure on a meter-in side and moving a load at a stable speed in a lowering direction, without using a counterbalance valve.SOLUTION: The hydraulic driving device for working machine includes: a hydraulic pump 2; a hydraulic actuator 4 which is driven in a direction of lowering a load; an operation device 6 which is operated in order to specify operation speed; a working hydraulic circuit including a meter-in flow passage for guiding hydraulic oil to the hydraulic actuator when driven in the direction of lowering the load and a meter-out flow passage for guiding the hydraulic oil discharged from the hydraulic actuator to a tank; a control valve 5 which changes the supply state of the hydraulic oil so as to actuate the hydraulic actuator at a speed specified by the operation device; meter-in flow adjusters 3, 9 and a meter-out flow adjuster 10 which adjust a meter-in flow rate and meter-out flow rate to flow rates corresponding to the speeds specified by the operation devices respectively; and a relief valve 16.
    • 要解决的问题:为了提供一种用于作业机械的液压驱动装置,在不使用平衡阀的情况下,防止在进入侧的压力的过度降低和以下降方向以稳定的速度移动负载。 解决方案:工作机械的液压驱动装置包括:液压泵2; 液压致动器4,其在降低负载的方向上被驱动; 操作装置6,其操作以指定操作速度; 工作液压回路,其包括用于在将液压致动器沿着降低负载的方向驱动时将液压油引导到液压致动器的流入通道,​​以及用于将从液压致动器排出的液压油引导到罐的出口流路; 控制阀5,其改变液压油的供给状态,以便以由操作装置指定的速度致动液压致动器; 流量调节器3,9和流出量流量调节器10,其将流量和流出流量调节到分别对应于由操作装置指定的速度的流量; 和安全阀16.版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Hydraulic driving apparatus for working machine
    • 液压驱动装置
    • JP2013072444A
    • 2013-04-22
    • JP2011209678
    • 2011-09-26
    • Kobe Steel Ltd株式会社神戸製鋼所Kobelco Cranes Co Ltdコベルコクレーン株式会社
    • SUGANO NAOKIMAEKAWA TOMOHITOMICHIDA TAKAHARUKONDO DAIYUKITAKADO NAOYAHORI NAOTO
    • F15B11/02B66D1/44F15B11/024
    • PROBLEM TO BE SOLVED: To provide a hydraulic driving apparatus for working machine, which prevents a pressure drop on a meter-in side and stably lowers a load.SOLUTION: There is provided the hydraulic driving apparatus for the working machine comprising a hydraulic pump 2, an engine 1, a hydraulic actuator 4, a manipulation device 6, a hydraulic circuit for work including a meter-in flow passage and a meter-out flow passage, and a regeneration flow passage 83 in down driving, a direction selector valve 3 changing a working oil supply amount according to the manipulation device 6, a meter-out flow controller 14 installed upstream from the regeneration flow passage 83, a back pressure valve 15 installed downstream from the regeneration flow passage 83, a check valve 13, and a non-regeneration operation relief valve 16 opened when the pressure of the meter-in flow passage becomes equal to or higher than set pressure. The set pressure is not less than a sum of a minimum set pressure of the back pressure valve 15, an inlet-outlet pressure difference of the meter-out flow controller 14 when the meter-out flow rate is maximum and the discharge flow rate of the hydraulic pump 2 is maximum, and an actuator pressure difference necessary for driving the hydraulic actuator 4 with no load, and not less than a maximum set pressure of the back pressure valve 15.
    • 要解决的问题:提供一种用于工作机械的液压驱动装置,其防止计量侧的压降,并且稳定地降低负载。 解决方案:提供了一种用于工作机械的液压驱动装置,其包括液压泵2,发动机1,液压致动器4,操纵装置6,用于工作的液压回路,包括流入通道和 流出通道和下行驱动的再生流路83,根据操作装置6改变工作油供给量的方向选择阀3,安装在再生流路83上游的排出流量控制器14, 设置在再生流路83下游的背压阀15,止回阀13,以及当进入流路的压力等于或高于设定压力时打开的非再生运转溢流阀16。 设定压力不小于背压阀15的最小设定压力,流出量流量最大时的出口流量控制器14的出口压力差与排出流量控制器14的排出流量之和 液压泵2是最大的,并且是空载驱动液压致动器4所必需的致动器压力差,并且不小于背压阀15的最大设定压力。(C)2013,JPO&INPIT
    • 9. 发明专利
    • Hydraulic control apparatus for working
    • 液压控制装置工作
    • JP2012237423A
    • 2012-12-06
    • JP2011108293
    • 2011-05-13
    • Kobe Steel Ltd株式会社神戸製鋼所Kobelco Cranes Co Ltdコベルコクレーン株式会社
    • SUGANO NAOKIMAEKAWA TOMOHITOYAMAGATA KATSUMI
    • F15B11/024B66D1/44
    • PROBLEM TO BE SOLVED: To suppress cavitation in a meter-in flow fluid passage and hunting of the rotation speed of a hydraulic actuator and to suppress the change in speed of a hydraulic actuator according to the weight of load.SOLUTION: The hydraulic control apparatus includes: a meter-in flow control device 62 which controls the flow rate of the meter-in fluid passage 30; a meter-out orifice 71 disposed at a meter-out fluid passage 40; a meter-out flow control device 72 which controls the flow rate of the meter-out fluid passage 40 to keep the inlet-outlet pressure difference of the meter-out orifice 71 constant; a back pressure valve 81 for generating a set back pressure Pbk at an upstream side position; and a regeneration fluid passage 50 branched from the meter-out fluid passage 40 at a position upstream of the back pressure valve 81 and merged with the meter-in fluid passage 30. A meter-out flow rate Qmo controlled by the meter-out flow control device 72 is controlled so as to make the meter-out flow rate Qmo be greater than the meter-in flow rate Qmi controlled by the meter-in flow control device 62.
    • 要解决的问题:为了抑制流量计流量通道中的气蚀和液压致动器的旋转速度的波动,并且根据负载的重量来抑制液压致动器的速度变化。 解决方案:液压控制装置包括:控制进入流体通道30的流量的计量流量控制装置62; 设在出口流体通道40处的出口孔71; 一个出口流量控制装置72,其控制排出流体通道40的流量以保持流出口71的入口 - 出口压力差恒定; 用于在上游侧位置产生设定背压Pbk的背压阀81; 以及再生流体通道50,其在背压阀81的上游位置处从排出流体通道40分支,并与流入通道30合并。由流出流量控制的排出流量Qmo 控制装置72被控制为使得流出量流量Qmo大于由流入控制装置62控制的流入流量Qmi。(C)2013,JPO和INPIT
    • 10. 发明专利
    • Control device of variable displacement hydraulic motor
    • 可变位移液压马达控制装置
    • JP2012052568A
    • 2012-03-15
    • JP2010193515
    • 2010-08-31
    • Kobe Steel LtdKobelco Cranes Co Ltdコベルコクレーン株式会社株式会社神戸製鋼所
    • MAEKAWA TOMOHITOIMANISHI ETSUJIROYAMAGATA KATSUMISUGANO NAOKI
    • F15B11/02B66D1/46
    • PROBLEM TO BE SOLVED: To provide a control device of a variable displacement hydraulic motor capable of preventing the occurrence of hunting, while preventing reduction in a winch speed and the deterioration in lever follow-up responsiveness of the winch speed.SOLUTION: This control device 101 of the variable displacement hydraulic motor includes a piston 2 for arranging a first piston chamber 2a and a second piston chamber 2b on both sides and changing a tilt angle of a swash plate of the hydraulic motor 1, a pressure compensating valve 5 for communicating one first pilot oil chamber 5a with a hoisting side flow passage 6-2 and communicating the other second pilot oil chamber 5c with a lowering side flow passage 7, and a spool valve 3 arranged between the piston 2 and the pressure compensating valve 5. A clearance restriction 50 and a check valve 51 are mutually arranged in parallel in a flow passage 12 for connecting the hoisting side flow passage 6-2 and the first piston chamber 2a. The check valve 51 is arranged in the direction for allowing a flow of pressure oil in the direction for increasing the tilt angle and cutting off the flow of the pressure oil in the direction for reducing the tilt angle.
    • 要解决的问题:提供一种能够防止发生狩猎的可变排量液压马达的控制装置,同时防止绞盘速度的降低和绞车速度的杆跟随响应性的劣化。 解决方案:可变排量液压马达的该控制装置101包括用于在两侧布置第一活塞室2a和第二活塞室2b的活塞2,并且改变液压马达1的斜盘的倾斜角度, 用于使一个第一先导油室5a与提升侧流动通道6-2连通并且使另一个第二先导油室5c与下降侧流动通道7连通的压力补偿阀5和布置在活塞2和 压力补偿阀5.间隙限制件50和止回阀51平行地布置在用于连接提升侧流动通道6-2和第一活塞室2a的流动通道12中。 止回阀51沿着允许沿增加倾斜角度的方向流动加压油的方向布置,并且在减小倾斜角度的方向上切断压力油的流动。 版权所有(C)2012,JPO&INPIT