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1. 发明授权

EP2385176B1 Prime mover revolution speed control system for hydraulic construction machine 有权转让
公开(公告)号：EP2385176B1
公开(公告)日：2018-10-31
申请号：EP11164472.0
申请日：2011-05-02
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Kanehama, Mitsuhiko , Sato, Kensuke , Okano, Yasuo , Azuma, Hiroyuki , Nakamura, Tsuyoshi
IPC分类号： E02F9/22
CPC分类号： E02F9/2246 , E02F9/2235 , E02F9/2292 , F02D29/04 , F02D31/007 , F02D41/2422 , F02D2200/60
摘要： The present invention provides a prime mover revolution speed control system for a hydraulic construction machine is capable of identifying an excavation state with increased certainty to improve operational performance during excavation work and enhance work efficiency. When the control lever (44) is fully operated in the direction of arm crowding, the control lever (43) is also operated, and PD‰§13 MPa applied, first judgment conditions are all met to let the excavation state identification function (62) conclude that an excavation state has begun. The function (64) determines NR by adding ”N to NRO, and then starts a speedup sequence. During excavation work, if the control lever (44) is subjected to a half or greater operation in the arm crowding direction and PD‰§10 MPa is applied, second judgment conditions are all met to let the function (62) conclude that the excavation state has persisted, and continue with the speedup sequence. If the second judgment conditions are not met, the function (62) concludes that the excavation state has ended, and then terminates the speedup sequence.

2. 发明授权

EP2354330B1 Engine controller for the hydraulic circuit of a construction machine 有权
标题翻译：驱动控制的建筑机械的液压回路
公开(公告)号：EP2354330B1
公开(公告)日：2014-11-19
申请号：EP11151101.0
申请日：2011-01-17
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Sato, Kensuke , Azuma, Hiroyuki , Nakamura, Tsuyoshi , Okano, Yasuo , Ishikawa, Kouji , Kanehama, Mitsuhiko
IPC分类号： E02F9/00 , E02F9/20 , E02F9/22 , F01N3/00 , F02D29/04
CPC分类号： E02F9/2246 , E02F9/2235

3. 发明公开

EP2385176A1 Prime mover revolution speed control system for hydraulic construction machine 有权转让
标题翻译： Antriebsmotordrehzahlsteuerungssystemfürhydraulische Baumaschinen
公开(公告)号：EP2385176A1
公开(公告)日：2011-11-09
申请号：EP11164472.0
申请日：2011-05-02
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Kanehama, Mitsuhiko , Sato, Kensuke , Okano, Yasuo , Azuma, Hiroyuki , Nakamura, Tsuyoshi
IPC分类号： E02F9/22
CPC分类号： E02F9/2246 , E02F9/2235 , E02F9/2292 , F02D29/04 , F02D31/007 , F02D41/2422 , F02D2200/60
摘要： The present invention provides a prime mover revolution speed control system for a hydraulic construction machine is capable of identifying an excavation state with increased certainty to improve operational performance during excavation work and enhance work efficiency. When the control lever (44) is fully operated in the direction of arm crowding, the control lever (43) is also operated, and PD≧13 MPa applied, first judgment conditions are all met to let the excavation state identification function (62) conclude that an excavation state has begun. The function (64) determines NR by adding ΔN to NRO, and then starts a speedup sequence. During excavation work, if the control lever (44) is subjected to a half or greater operation in the arm crowding direction and PD≧10 MPa is applied, second judgment conditions are all met to let the function (62) conclude that the excavation state has persisted, and continue with the speedup sequence. If the second judgment conditions are not met, the function (62) concludes that the excavation state has ended, and then terminates the speedup sequence.
摘要翻译：本发明提供了一种用于液压施工机械的原动机转速控制系统，其能够以更高的确定性来识别挖掘状态，以提高挖掘作业中的操作性能并提高工作效率。当控制杆（44）在臂部挤压方向上完全操作时，控制杆（43）也被操作，施加PD‰§13MPa，首先判断条件满足挖掘状态识别功能（62 ）得出结论，挖掘状态已经开始。功能（64）通过加入“N到NRO”来确定NR，然后启动加速序列。在挖掘作业中，如果控制杆（44）在臂拥挤方向上进行了一半或更多的操作，并施加了PD‰§10 MPa，则满足第二判断条件以使功能（62）得出结论：挖掘国家一直坚持下去，继续加快步伐。如果不满足第二判断条件，则功能（62）断定挖掘状态已经结束，然后终止加速顺序。

4. 发明公开

EP2354330A1 Engine controller for the hydraulic circuit of a construction machine 有权
标题翻译： Antriebssteuerungfürden Hydraulikreis einer Baumaschine
公开(公告)号：EP2354330A1
公开(公告)日：2011-08-10
申请号：EP11151101.0
申请日：2011-01-17
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Sato, Kensuke , Azuma, Hiroyuki , Nakamura, Tsuyoshi , Okano, Yasuo , Ishikawa, Kouji , Kanehama, Mitsuhiko
IPC分类号： E02F9/00 , E02F9/20 , E02F9/22 , F01N3/00 , F02D29/04
CPC分类号： E02F9/2246 , E02F9/2235
摘要： A hydraulic drive device for a construction machine (1) which can reliably judge whether or not the state of the construction machine is appropriate for stopping an engine is provided. The hydraulic drive device includes: a main pump (13); a regulator (15) that controls the discharge rate of the main pump (13) by a control pressure Pc; an engine (16) that drives the main pump (13); an engine stopping unit (83) that stops the engine (16) when a predetermined state of the construction machine has continued for a predetermined period of time; and a pressure sensor (72) that detects the control pressure Pc. The engine stopping unit (83) has a control signal judging unit (84) that judges whether or not the control pressure Pc detected by the pressure sensor (72) is lower than a predetermined pressure value Pc1, as a judgment of whether or not the predetermined state of the construction machine is present. The engine stopping unit (83) stops the engine (16) when a judgment result that the control pressure Pc is lower than the predetermined pressure value Pc1 is obtained. The predetermined pressure value Pc1 is a pressure value for controlling the discharge rate of the main pump (13) to the lower limit for use in the construction machine.
摘要翻译：提供一种可以可靠地判断建筑机械的状态是否适合停止发动机的建筑机械（1）的液压驱动装置。液压驱动装置包括：主泵（13）; 调节器（15），其通过控制压力Pc控制所述主泵（13）的排出速度; 驱动所述主泵（13）的发动机（16）。当建筑机械的预定状态持续预定时间时停止发动机（16）的发动机停止单元（83）以及检测控制压力Pc的压力传感器（72）。发动机停止单元（83）具有控制信号判断单元（84），判定由压力传感器（72）检测到的控制压力Pc是否低于预定压力值Pc1，作为判断是否存在施工机械的预定状态。当获得控制压力Pc低于预定压力值Pc1的判断结果时，发动机停止单元（83）停止发动机（16）。预定压力值Pc1是用于将主泵（13）的排出速度控制在用于建筑机械的下限的压力值。

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