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1. 发明授权

EP3040483B1 WORKING MACHINE 有权转让
公开(公告)号：EP3040483B1
公开(公告)日：2020-04-22
申请号：EP14840726.5
申请日：2014-08-28
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IMURA, Shinya , ISHIKAWA, Kouji , NISHIKAWA, Shinji , KANETA, Tomoaki , IZUMI, Shiho
IPC分类号： E02F9/20 , E02F9/12

2. 发明公开

EP3578830A1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3578830A1
公开(公告)日：2019-12-11
申请号：EP18853247.7
申请日：2018-05-18
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HIJIKATA, Seiji , TSURUGA, Yasutaka , ISHIKAWA, Kouji , TAKAHASHI, Kiwamu , HOSHINO, Masatoshi
IPC分类号： F15B21/14 , E02F9/22 , F15B11/08
摘要： A hydraulic circuit (11) of a hydraulic excavator (1) is provided with a main hydraulic circuit (11A) including a boom cylinder (5D), a pilot hydraulic circuit (11B) for operating the boom cylinder (5D) and a recovery hydraulic circuit (11C) including an accumulator (29). In this case, the recovery hydraulic circuit (11C) is provided with a recovery control valve (31) that recovers pressurized oil discharged from the boom cylinder (5D) to the accumulator (29), a main supply control valve (34) for supplying pressurized oil accumulated in the accumulator (29) to the main hydraulic circuit (11A) and a pilot supply control valve (37) for supplying pressurized oil accumulated in the accumulator (29) to the pilot hydraulic circuit (11B).

3. 发明公开

EP3495668A1 HYDRAULIC DRIVE DEVICE 有权
公开(公告)号：EP3495668A1
公开(公告)日：2019-06-12
申请号：EP17922909.1
申请日：2017-09-08
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： TAKAHASHI, Kiwamu , ISHIKAWA, Kouji , TSURUGA, Yasutaka , HOSHINO, Masatoshi , HIJIKATA, Seiji
IPC分类号： F15B11/22 , B62D11/04 , E02F9/22 , F15B11/02
摘要： A first torque control proportional electromagnetic valve (37) is connected through a first torque control line (41) to a third pressure receiving chamber (32D) in a first torque control regulator (32). A second torque control proportional electromagnetic valve (38) is connected through a second torque control line (42) to a third pressure receiving chamber (35D) in a second torque control regulator (35). The first and second torque control proportional electromagnetic valves (37, 38) are controlled by a controller 47. A switching valve (48) is provided between the first torque control line (41) and the second torque control line (42). The switching valve (48) supplies an output pressure of the first torque control proportional electromagnetic valve (37) to the third pressure receiving chamber (35D) in the second torque control regulator (35) at the time of driving hydraulic motors (2B, 2C) for left side and right side traveling.

4. 发明公开

EP3483346A1 WORK MACHINE 有权
公开(公告)号：EP3483346A1
公开(公告)日：2019-05-15
申请号：EP17823798.8
申请日：2017-02-28
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IZUMI, Shiho , NARIKAWA, Ryuu , MEGURIYA, Shuuichi , AKITA, Tarou , ISHIKAWA, Kouji
IPC分类号： E02F3/43 , F15B11/024 , F15B11/05 , F15B11/08
摘要： Provided is a work machine in which fluctuation in the speed of the hydraulic actuator due to hydraulic fluid regeneration during the execution of machine control is suppressed, thereby making it possible to improve work efficiency while securing the control accuracy of the machine control. A controller 100 has an area limiting control section 110 correcting the pilot pressures of pilot lines 41 through 43, a regeneration control section 120 adjusting the flow rate of the hydraulic fluid caused to flow from a tank side line 28a of an arm cylinder 12 into a pump side line 28b thereof between zero and a predetermined upper limit value, and a regeneration control switching section 130 that issues an order to the regeneration control section 120 to set the predetermined upper limit value to a first set value F1 when the function of the area limiting control section is invalid and that issues an order to the regeneration control section 120 to set the predetermined upper limit value to a second set value F2 that is smaller than the first set value when the function of the area limiting control section is effective.

5. 发明授权

EP2918854B1 HYDRAULIC DRIVE DEVICE FOR CONSTRUCTION MACHINERY 有权
公开(公告)号：EP2918854B1
公开(公告)日：2018-06-27
申请号：EP13852377.4
申请日：2013-10-15
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： SATO, Kensuke , NAKAMURA, Tsuyoshi , ISHIKAWA, Kouji
IPC分类号： F15B21/14 , E02F9/22 , F15B11/02 , F15B11/028 , E02F9/20
CPC分类号： E02F9/2217 , E02F9/2075 , E02F9/2095 , E02F9/2221 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/024 , F15B21/14 , F15B2011/0246 , F15B2211/20515 , F15B2211/20569 , F15B2211/20576 , F15B2211/3058 , F15B2211/40515 , F15B2211/41527 , F15B2211/41563 , F15B2211/6313 , F15B2211/6316 , F15B2211/88
摘要： During boom-midair lowering operation in which a front work implement 130 can be turned under the self-weight of a boom 131, a hydraulic pump/motor 7 is operated as a motor to operate a generator/electric motor 10 as a generator. Power generation operation is performed by the hydraulic fluid discharged from a bottom-side chamber 5b of a boom cylinder 5 to recover positional energy. During jack-up in which the front work implement 130 cannot be turned under the self-weight of the boom 131, the generator/electric motor 10 is operated as an electric motor to operate the hydraulic pump/motor 7 as a pump. The jack-up is performed by supplying the hydraulic fluid from the bottom-side chamber 5b to rod-side chamber 5a of the boom cylinder 5 without supplying the hydraulic fluid from the main pump 2 to the rod-side chamber 5a of the boom cylinder 5.

6. 发明公开

EP3199713A1 WORKING MACHINE DISPLAY DEVICE 审中-公开
标题翻译：工作机器显示装置
公开(公告)号：EP3199713A1
公开(公告)日：2017-08-02
申请号：EP15844739.1
申请日：2015-03-05
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NISHIKAWA, Shinji , ISHIKAWA, Kouji , KANETA, Tomoaki
IPC分类号： E02F9/26 , B60R16/02
CPC分类号： G01F9/001 , B60R16/02 , E02F3/32 , E02F9/2054 , E02F9/22 , E02F9/26 , E02F9/267 , G09G5/02 , G09G2320/0613 , G09G2320/0666 , G09G2380/10
摘要： There is provided a display apparatus of a work machine that can evaluate whether the fuel consumption is good or bad in the whole engine running period including the time of operation and the time of non-operation of a work implement and inform an operator of the evaluation in real time to prompt fuel-consumption-saving operation. The display apparatus is for a work machine having an engine, a hydraulic pump driven by the engine, an actuator driven by a hydraulic fluid delivered by the hydraulic pump, and an operation device that operates the actuator. The display apparatus includes a fuel consumption index calculating section that calculates a first fuel consumption index by dividing the operation time of the operation device by the fuel consumption amount of the engine or dividing the fuel consumption amount of the engine by the operation time of the operation device. The first fuel consumption index calculated by the fuel consumption index calculating section is displayed on a display section in real time.
摘要翻译：本发明提供一种作业机械的显示装置，其能够在包括作业时间和作业机器的非作业时间在内的整个发动机运转时间内评价燃料消耗量的好坏，并通知给操作者实时提示节油运行。该显示设备用于具有发动机，由发动机驱动的液压泵，由液压泵输送的液压流体驱动的致动器以及操作致动器的操作装置的作业机械。显示设备包括：燃料消耗指标计算部分，其通过将操作装置的操作时间除以发动机的燃料消耗量或者将发动机的燃料消耗量除以操作的操作时间来计算第一燃料消耗指标设备。由燃料消耗指标计算部分计算的第一燃料消耗指标实时显示在显示部分上。

7. 发明公开

EP2918733A1 CONSTRUCTION MACHINE 有权转让
标题翻译：施工机械
公开(公告)号：EP2918733A1
公开(公告)日：2015-09-16
申请号：EP13853460.7
申请日：2013-10-15
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NISHIKAWA, Shinji , SATAKE, Hidetoshi , IMURA, Shinya , IZUMI, Shiho , ISHIKAWA, Kouji
IPC分类号： E02F9/20 , F15B11/02 , F15B11/028 , F16H61/4078
CPC分类号： F15B11/04 , E02F9/123 , E02F9/20 , E02F9/2095 , E02F9/22 , E02F9/2203 , E02F9/2217 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/162 , F15B11/165 , F15B13/06 , F15B13/14 , F15B2015/206 , F15B2211/205 , F15B2211/20515 , F15B2211/7058 , F15B2211/7135 , F15B2211/75 , F15B2211/781
摘要： A construction machine includes: a swing structure (50); a hydraulic pump (1); a hydraulic motor (3) for driving the swing structure (50) using hydraulic fluid from the hydraulic pump (1); an electric motor (14) for driving the swing structure (50) with or without the aid of the hydraulic motor (3); and a hydraulic actuator (16) driven by the hydraulic fluid from the hydraulic pump 1, the hydraulic actuator can be operated together with the swing structure (50). When the swing structure (50) is operated together with the hydraulic actuator (16), only the electric motor (14) is used to swing the swing structure (50).
摘要翻译：一种建筑机械，包括：摆动结构（50）; 液压泵（1）; 液压马达（3），用于使用来自液压泵（1）的液压流体来驱动摆动结构（50）; 用于借助或不借助液压马达（3）驱动摆动结构（50）的电动马达（14）; 和由来自液压泵1的液压流体驱动的液压致动器（16），液压致动器可以与摆动结构（50）一起操作。当摆动结构（50）与液压致动器（16）一起操作时，仅使用电动机（14）来摆动摆动结构（50）。

8. 发明公开

EP2320042A1 VEHICULAR BACK PROCESSING SYSTEM 审中-公开
标题翻译： VERARBEITUNGSSYSTEMFÜRFAHRZEUGHECK
公开(公告)号：EP2320042A1
公开(公告)日：2011-05-11
申请号：EP09794475.5
申请日：2009-07-08
申请人： Hitachi Construction Machinery Co., Ltd
发明人： KAMIYA, Shohei , ISHIKAWA, Kouji , ARAI, Yasushi , TSUKADA, Hidenobu , NAKAMURA, Tsuyoshi
IPC分类号： F01N3/02 , B60K35/00 , G01D7/00
CPC分类号： F02D41/029 , B60R1/00 , B60R2300/8066 , F01N9/002 , F01N11/00 , F02D41/0245 , F02D2041/228 , Y02T10/47
摘要： PROBLEM: To provide an exhaust gas post-treatment system for a vehicle, which in the course of regeneration, can surely ascertain whether or not there is any object approaching a body of the vehicle from behind.
SOLUTION: Provided are a filter 4 arranged in an exhaust passage 3 of an engine 2 to trap PM therein, a trapped and deposited PM amount sensing means 6 for sensing a deposited amount of PMdeposited in the filter 4, a fuel injector 7 for burning and removing PM deposited in the filter 4 to conduct regeneration of the filter 4, a rearward monitoring camera 8 for monitoring a scene rearward of a vehicle body, a display module 9 for displaying monitoring information from the rearward monitoring camera 8, and a controller 10 having a regeneration processing unit for executing control processing to actuate the fuel injector 7 and to perform regeneration. The controller 10 includes a display continuation processing unit for executing control processing such that during the regeneration by the fuel injector 7, the monitoring information from the rearward monitoring camera 8 is continuously displayed on a display screen 9a of the display module 9.
摘要翻译：问题：提供一种用于车辆的废气后处理系统，其在再生过程中可以确定地确定是否有任何物体从后方接近车体。解决方案：提供一种布置在发动机2的排气通道3中以将PM捕获的过滤器4，用于感测沉积在过滤器4中的PM的沉积量的捕获和沉积的PM量感测装置6，用于燃烧的燃料喷射器7和去除沉积在过滤器4中的PM以进行过滤器4的再生，用于监视车身后方的场景的后方监视摄像机8，用于显示来自后方监视摄像机8的监视信息的显示模块9以及具有再生处理单元，用于执行控制处理以致动燃料喷射器7并进行再生。控制器10包括显示继续处理单元，用于执行控制处理，使得在由燃料喷射器7再生期间，来自后方监视摄像机8的监视信息被连续地显示在显示模块9的显示屏幕9a上。

9. 发明公开

EP1571339A1 METHOD AND DEVICE FOR CONTROLLING PUMP TORQUE FOR HYDRAULIC CONSTRUCTION MACHINE 有权
标题翻译：方法和装置泵控扭矩液压工程机械
公开(公告)号：EP1571339A1
公开(公告)日：2005-09-07
申请号：EP03812682.7
申请日：2003-11-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： NAKAMURA, Kazunori , KOWATARI, Yoichi , ISHIKAWA, Kouji , ARAI, Yasushi
IPC分类号： F04B49/06
CPC分类号： F04B49/002 , E02F9/2235 , E02F9/226 , E02F9/2292 , E02F9/2296 , F04B17/05 , F04B23/06 , F04B49/065 , F04B49/08
摘要： A current load rate of an engine 10 is computed and a maximum absorption torque of at least one hydraulic pump 1, 2 is controlled so that the load rate is held at a target value. Engine stalling can be prevented by decreasing the maximum absorption torque of the hydraulic pump under a high-load condition. When an engine output lowers due to environmental changes, the use of poor fuel or other reasons, the maximum absorption torque of the hydraulic pump can be decreased without a lowering of the engine revolution speed. Further, the present invention is adaptable for any kinds of factors causing a lowering of the engine output, such as those factors that cannot be predicted in advance or are difficult to detect by sensors. In addition, because of no necessity of sensors, such as environment sensors, the manufacturing cost can be reduced.

10. 发明公开

EP3521638A1 HYDRAULIC DRIVE DEVICE 有权
公开(公告)号：EP3521638A1
公开(公告)日：2019-08-07
申请号：EP16913638.9
申请日：2016-09-29
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HIJIKATA ,Seiji , TSURUGA, Yasutaka , HIRAKU, Kenji , ISHIKAWA, Kouji
IPC分类号： F15B21/14
摘要： It is an object of the present invention to provide a hydraulic drive system that effectively utilizes a hydraulic fluid accumulated in an accumulator to make it possible to achieve a substantial improvement in terms of efficiency for a work machine as a whole. A hydraulic drive system includes: a first hydraulic pump; a first hydraulic actuator driven by being supplied with a hydraulic fluid from the first hydraulic pump; a first line for supplying the hydraulic fluid from the first hydraulic pump to the first hydraulic actuator; a first pump flow adjustment device installed in the first line, the first pump flow adjustment device being configured to adjust; a first hydraulic accumulator for accumulating the hydraulic fluid delivered from the first hydraulic pump; and a first accumulation flow adjustment device configured to adjust the flow of the hydraulic fluid from the first hydraulic pump to the first hydraulic accumulator. The hydraulic drive system further comprises a first accumulation flow supply device configured to supply the hydraulic fluid accumulated in the first hydraulic accumulator to the first hydraulic actuator via a second line different from the first line.

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