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1. 发明授权

EP1637718B1 ENGINE CONTROL DEVICE FOR CONSTRUCTION MACHINE 失效转让
标题翻译：电机控制装置，建筑机械
公开(公告)号：EP1637718B1
公开(公告)日：2012-05-30
申请号：EP04746748.5
申请日：2004-06-24
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NAKAMURA, Kazunori , ARAI, Yasushi , KOWATARI, Yoichi , ISHIKAWA, Kouji , KARASAWA, Hideo
IPC分类号： F02D41/04 , F02D41/14 , F02D31/00
CPC分类号： F02D31/007 , F02D41/12
摘要： An engine control device for a construction machine has pressure sensors (73, 74), position sensors (75, 76), pressure sensors (77, 78), a target revolution speed correction value- calculating portion (90), and a correction value-adding portion (70r). A target revolution speed (NR2) for control is calculated such that an engine speed increases from a target revolution speed (NR1), from an input portion (71), based on a change in a state quantity and then gradually returns to the target revolution speed (NR1), a target fuel injection amount (FN1) is calculated based on a target revolution speed (NR2) for control, and a fuel injection amount is regulated. The structure above enables the reduction of an engine speed in rapid increase in an engine load to be reduced without sacrificing operation, and lowering of durability caused by overspeeding of the engine to be prevented.

2. 发明公开

EP2112279A1 PUMP TORQUE CONTROL DEVICE FOR HYDRAULIC CONSTRUCTION MACHINE 审中-公开
标题翻译： PU UNGÜR INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE
公开(公告)号：EP2112279A1
公开(公告)日：2009-10-28
申请号：EP08710646.4
申请日：2008-01-30
申请人： Hitachi Construction Machinery Co., Ltd
发明人： ARIGA, Nobuei , ISHIKAWA, Kouji , KARASAWA, Hideo , OKANO, Yasuo , NAKAMURA, Kazunori , KOWATARI, Youichi
IPC分类号： E02F9/22 , E02F9/20 , F04B49/06 , F15B11/00
CPC分类号： F15B13/0422 , E02F9/2225 , E02F9/2235 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F04B17/05 , F04B49/08 , F15B11/17 , F15B2211/20523 , F15B2211/20546 , F15B2211/20553 , F15B2211/26 , F15B2211/2656 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/6309 , F15B2211/633 , F15B2211/6343 , F15B2211/6652 , F15B2211/6655 , F15B2211/7053 , F15B2211/7058
摘要： A pump torque control system is capable of preventing from hunting due to interference between speed sensing control and control on an engine speed of a prime mover when the temperature of a hydraulic fluid is low, and performing appropriate pump torque control.
A regulator 31 controls displacement volumes of hydraulic pumps 2 and 3 to ensure that the total absorption torque of the hydraulic pumps 2 and 3 does not exceed a set maximum absorption torque. An engine sensor 33, a hydraulic fluid temperature sensor 34, a solenoid proportional valve 35, and a controller 23 perform the speed sensing control to ensure that the maximum absorption torque of the hydraulic pumps 2 and 3 is reduced. The maximum absorption torque is set in the regulator 31 based on a deviation between a target engine speed of the prime mover 1 and an actual engine speed of the prime mover 1. A second modification factor calculating section 45 and a control gain modifying section 49, which are included in the controller 23, change a control gain of the speed sensing control based on a value detected by the hydraulic temperature sensor 34 to ensure that the control gain is reduced as the temperature of the hydraulic fluid is reduced.
摘要翻译：泵转矩控制系统能够防止在液压流体的温度低时对速动检测控制和原动机的发动机转速的控制之间的干扰进行回波，并且执行适当的泵转矩控制。调节器31控制液压泵2和3的排量，以确保液压泵2和3的总吸收扭矩不超过设定的最大吸收扭矩。发动机传感器33，液压油温度传感器34，电磁比例阀35和控制器23进行速度检测控制，以确保液压泵2和3的最大吸收转矩减小。基于原动机1的目标发动机转速与原动机1的实际发动机转速之间的偏差，在调节器31中设定最大吸收转矩。第二变更系数计算部45和控制增益修正部49，包括在控制器23中的控制增益基于由液压温度传感器34检测的值来改变速度检测控制的控制增益，以确保随着液压流体的温度降低控制增益而减小。

3. 发明授权

EP1662151B1 HYDRAULIC DRIVE APPARATUS 失效
标题翻译：液压传动装置
公开(公告)号：EP1662151B1
公开(公告)日：2011-11-30
申请号：EP04771548.7
申请日：2004-08-05
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KAJITA, Yusuke, Hitachi Construction Machinery Co , ISHIKAWA, Koji , KARASAWA, Hideo
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： F15B11/024 , E02F9/2225 , E02F9/2296 , F15B11/16 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40507 , F15B2211/40515 , F15B2211/41545 , F15B2211/428 , F15B2211/6355 , F15B2211/7114 , F15B2211/88
摘要： A hydraulic drive apparatus, comprising a boom directional control valve (23) installed on a hydraulic shovel and controlling a boom cylinder (6) driven by pressure oil delivered from a main hydraulic pump (21), an arm directional control valve (24) controlling an arm cylinder (7), a boom operating device (25) controllably switching the boom directional control valve (23), and an arm operating device (26) controllably switching the arm directional control valve (24). The apparatus also comprises a communication control means allowing the rod side chamber (6b) of the boom cylinder (6) to communicate with the bottom side chamber (7a) of the arm cylinder (7) when the operation amount of the arm operating device (26) exceeds a specified amount (S) so that, in a combined operation in which the pressure oil is supplied to the bottom side chambers of a first hydraulic cylinder and a second hydraulic cylinder, the pressure oil in the rod side chamber of the first hydraulic cylinder which was disposed off in a tank can be effectively utilized irrespective of whether the bottom pressure of the second hydraulic cylinder is high or low.
摘要翻译： 1。一种液压驱动装置，其特征在于，具备：安装在液压挖掘机上，控制由从主液压泵（21）输出的压力油驱动的动臂油缸（6）的动臂用方向控制阀（23）斗杆缸7，可控制地切换动臂用方向控制阀23的动臂操作装置25以及可控地切换斗杆用方向控制阀24的斗杆操作装置26。该装置还包括一个连通控制装置，当臂操纵装置（6）的操作量达到预定值时，动臂缸（6）的杆侧室（6b）与臂缸（7）的底侧室（7a）在第一液压缸和第二液压缸的底侧室中供给压力油的组合操作中，第一液压缸和第二液压缸的杆侧室中的压力油在第一液压缸和第二液压缸的底侧室中的压力油超过规定量（S）不管第二液压缸的底部压力是高还是低，都可以有效地利用设置在箱中的液压缸。

4. 发明公开

EP1403437A1 WORKING MACHINE, TROUBLE DIAGNOSIS SYSTEM OF WORKING MACHINE, AND MAINTENANCE SYSTEM OF WORKING MACHINE 有权
标题翻译： FEHLERDIAGNOSESYSTEM UND FEHLERDIAGNOSEVERFAHRENFÜREINE ARBEITSMASCHINE
公开(公告)号：EP1403437A1
公开(公告)日：2004-03-31
申请号：EP02722854.3
申请日：2002-04-26
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： OGURA, Hiroshi , WATANABE, Hiroshi , SUGIYAMA, Genroku , KARASAWA, Hideo , UMENO, Yoshiyuki , TOMIKAWA, Osamu , MIURA, Shuichi , ONO, Kiyoshi , OCHIAI, Yasushi , SHIBATA, Koichi , ADACHI, Hiroyuki
IPC分类号： E02F9/20 , E02F9/24 , G06F17/60 , H04Q9/00
CPC分类号： G05B23/0267 , E02F9/205 , E02F9/24 , E02F9/26 , E02F9/268 , G05B19/4063 , G05B19/4185 , G05B2219/31454 , G05B2219/33284 , G05B2219/45012 , Y02P90/86
摘要： A working machine failure diagnosis method for performing a failure diagnosis by transmitting and receiving signals through communication devices provided at a working machine and at an information management center, according to the present invention, includes: a first step in which a first signal related to a failure of the working machine is generated at the working machine and the first signal is transmitted to the information management center from the working machine via the communication devices; a second step in which, after the first signal is transmitted, the information management center generates a second signal for identifying a location of the failure based upon the first signal and the second signal is then transmitted from the information management center to the working machine via the communication devices; and a third step in which failure information corresponding to the first signal and the second signal is provided to an operator.
摘要翻译：该方法包括：第一步骤，用于通过工作机产生关于工作机器故障的第一信号，并通过通信设备将第一信号从工作机传送到信息控制中心;第二步骤，用于产生第二信号，在发送第一信号时基于第一信号在信息控制中心中指定故障位置，并且通过通信设备将第二信号从信息控制中心发送到作业机器;以及第三步骤，用于通知操作者故障关于第一和第二信号的信息。

5. 发明公开

EP1391837A1 MANAGING DEVICE AND MANAGING SYSTEM FOR CONSTRUCTION MACHINERY 审中-公开
标题翻译： VERWALTUNGSEICHUNG UND VERWALTUNGSSYSTEMFÜRBAUMASCHINEN
公开(公告)号：EP1391837A1
公开(公告)日：2004-02-25
申请号：EP02718628.7
申请日：2002-04-22
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： ADACHI, Hiroyuki , HIRATA, Toichi , SUGIYAMA, Genroku , ONOUE, Hiroshi , KARASAWA, Hideo , SHIBATA, Koichi , WATANABE, Hiroshi , ONO, Kiyoshi , TOMIKAWA, Osamu
IPC分类号： G06F17/60
CPC分类号： G07C5/008 , E02F9/26 , G06Q10/06 , G07C5/085
摘要： Assessment information needed to calculate a used vehicle assessment value of a hydraulic excavator 10 is input to a portable telephone 20 and is then transmitted from the portable telephone 20. The transmitted assessment information is received at a manufacturer's base station 40 at a remote location. The used vehicle assessment value of the hydraulic excavator 10 is calculated based upon the received assessment information, and history information and operation information on the hydraulic excavator 10 read out from an operation information database 43 and a history database 42 in correspondence to an ID number assigned to the hydraulic excavator which is included in the assessment information.
摘要翻译：将计算液压挖掘机10的二手车辆评估值所需的评估信息输入到便携式电话机20，然后从便携式电话机20发送。发送的评估信息在制造商的基站40在远程位置接收。液压挖掘机10的二手车辆评估值根据所接收到的评估信息，以及与分配的ID号对应的从操作信息数据库43和历史数据库42读出的液压挖掘机10的历史信息和操作信息来计算包括在评估信息中的液压挖掘机。

6. 发明授权

EP1630303B1 HYDRAULIC DRIVE DEVICE 失效
标题翻译：液压驱动装置
公开(公告)号：EP1630303B1
公开(公告)日：2012-11-07
申请号：EP04728031.8
申请日：2004-04-16
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： ISHIKAWA, Koji , KAJITA, Yusuke Hitachi Const.Mach.Co.,Ltd. , NAKAMURA, Kazunori , SUGIYAMA, Genroku , KARASAWA, Hideo
IPC分类号： E02F9/22
CPC分类号： E02F9/2235 , E02F9/2285 , E02F9/2296

7. 发明授权

EP1291253B1 SECURITY SYSTEM OF CONSTRUCTION MACHINERY 有权
标题翻译：防盗系统，建设
公开(公告)号：EP1291253B1
公开(公告)日：2008-03-26
申请号：EP02713283.6
申请日：2002-04-02
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： SHIBATA, Koichi , ONO, Kiyoshi , SUGIYAMA, Genroku , TOMIKAWA, Osamu , ADACHI, Hiroyuki , KARASAWA, Hideo , HIRATA, Toichi , WATANABE, Hiroshi
IPC分类号： B60R25/04 , E02F9/24 , G07C9/00
CPC分类号： E02F9/205 , B60R25/04 , B60R25/2018 , B60R2325/205 , B60R2325/308 , E02F9/24
摘要： A security system for a construction machine including a construction machine equipped with a body controller for storing a first password, management apparatus arranged in a location apart from the construction machine and a portable communications unit for storing a second password provided communicably with the management apparatus and the body controller. The portable communications unit, receiving the first password from the management apparatus, replaces the second password with the first password. The body controller determines whether the second password output from the portable communications unit coincides with the first password. In case these passwords coincide with each other, an engine drive signal is output. Otherwise the engine is kept inoperable. This prevents possible theft of a construction machine.

8. 发明公开

EP1662151A1 HYDRAULIC DRIVE APPARATUS 失效
标题翻译： HYDRAULISCHE ANTRIEBSVORRICHTUNG
公开(公告)号：EP1662151A1
公开(公告)日：2006-05-31
申请号：EP04771548.7
申请日：2004-08-05
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： KAJITA, Yusuke , ISHIKAWA, Koji , KARASAWA, Hideo
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： F15B11/024 , E02F9/2225 , E02F9/2296 , F15B11/16 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40507 , F15B2211/40515 , F15B2211/41545 , F15B2211/428 , F15B2211/6355 , F15B2211/7114 , F15B2211/88
摘要： A hydraulic drive system is mounted on a hydraulic excavator, and is provided with a directional control valve 23 for a boom, a directional control valve 24 for an arm, a boom control device 25 for selectively controlling the directional control valve 23 for the boom, and an arm control device 26 for selectively controlling the directional control valve 24 for the arm. The directional control valves 23,24 control a boom cylinder 6 and an arm cylinder 7, respectively, which are driven by pressure oil delivered from a main hydraulic pump 21. The hydraulic drive system is provided with a communication control means for communicating a rod chamber 6b of the boom cylinder 6 and a bottom chamber 7a of the arm cylinder 7 with each other when a stroke of the arm control device 26 has become a predetermined amount S or greater. The communication control means has made it possible to effectively use pressure oil in the rod chamber of the first hydraulic cylinder, which was conventionally drained into a reservoir, irrespective of the level of a bottom pressure in the second hydraulic cylinder upon performing a combined operation that pressure oil is fed to a bottom chamber of the first hydraulic cylinder and the bottom chamber of the second hydraulic cylinder.
摘要翻译：液压驱动系统安装在液压挖掘机上，设有用于起重臂的方向控制阀23，用于臂的方向控制阀24，用于选择性地控制动臂用方向控制阀23的动臂控制装置25，以及用于选择性地控制臂的方向控制阀24的臂控制装置26。方向控制阀23,24分别控制由从主液压泵21输送的压力油驱动的动臂缸6和斗杆缸7.液压驱动系统设有连通控制装置，当臂控制装置26的行程变为预定量S以上时，臂缸6的6b和臂缸7的底部室7a彼此相对。通信控制装置使得可以有效地使用常规排放到储存器中的第一液压缸的杆室中的压力油，而不管第二液压缸中的底部压力的水平如何，在执行组合操作时压力油被供给到第一液压缸的底部室和第二液压缸的底部室。

9. 发明公开

EP1591669A1 HYDRAULIC WORKING MACHINE 审中-公开
标题翻译：液压工程机械
公开(公告)号：EP1591669A1
公开(公告)日：2005-11-02
申请号：EP04702070.6
申请日：2004-01-14
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： ABE, Toshihiro , KAJITA, Yusuke , NAKAMURA, Kazunori , ISHIKAWA, Kouji , KARASAWA, Hideo
IPC分类号： F15B11/02 , E02F9/22
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2239 , E02F9/2285 , E02F9/2296 , F15B2211/20546 , F15B2211/20576 , F15B2211/3052 , F15B2211/3116 , F15B2211/3133 , F15B2211/31576 , F15B2211/31582 , F15B2211/329 , F15B2211/6313 , F15B2211/6316 , Y02P80/13
摘要： A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.

10. 发明公开

EP3604690A1 CONSTRUCTION MACHINERY 有权
公开(公告)号：EP3604690A1
公开(公告)日：2020-02-05
申请号：EP18771596.6
申请日：2018-03-20
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KARASAWA, Hideo , KODAKA, Katsuaki
IPC分类号： E02F9/22
摘要： A controller according to the present invention has: a storage section that stores a first relationship between manipulated variables of an operating lever preset for each vehicle-body weight and target delivery pressures of a hydraulic pump; a target delivery pressure computation section that applies the vehicle-body weight inputted through an input device and the manipulated variable of the operating lever corresponding to a pilot pressure detected by pilot pressure sensors, to a first relationship stored in the storage section in order to calculate a target delivery pressure of the hydraulic pump; and a feedback control section that performs feedback control on the center bypass selector valve such that the delivery pressure of the hydraulic pump detected by the delivery pressure sensor agrees with the target delivery pressure of the hydraulic pump calculated by the target delivery pressure computation section.

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