JP7324114B2 - 建設機械 - Google Patents

建設機械 Download PDF

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Publication number
JP7324114B2
JP7324114B2 JP2019187103A JP2019187103A JP7324114B2 JP 7324114 B2 JP7324114 B2 JP 7324114B2 JP 2019187103 A JP2019187103 A JP 2019187103A JP 2019187103 A JP2019187103 A JP 2019187103A JP 7324114 B2 JP7324114 B2 JP 7324114B2
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Japan
Prior art keywords
hydraulic
hydraulic pump
pump
flow rate
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2019187103A
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English (en)
Japanese (ja)
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JP2021063524A (ja
JP2021063524A5 (enExample
Inventor
勉 宇田川
茂行 櫻井
純司 山本
幸仁 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP2019187103A priority Critical patent/JP7324114B2/ja
Priority to PCT/JP2020/037478 priority patent/WO2021070736A1/ja
Publication of JP2021063524A publication Critical patent/JP2021063524A/ja
Publication of JP2021063524A5 publication Critical patent/JP2021063524A5/ja
Application granted granted Critical
Publication of JP7324114B2 publication Critical patent/JP7324114B2/ja
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Operation Control Of Excavators (AREA)
JP2019187103A 2019-10-10 2019-10-10 建設機械 Active JP7324114B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019187103A JP7324114B2 (ja) 2019-10-10 2019-10-10 建設機械
PCT/JP2020/037478 WO2021070736A1 (ja) 2019-10-10 2020-10-01 建設機械

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019187103A JP7324114B2 (ja) 2019-10-10 2019-10-10 建設機械

Publications (3)

Publication Number Publication Date
JP2021063524A JP2021063524A (ja) 2021-04-22
JP2021063524A5 JP2021063524A5 (enExample) 2022-09-27
JP7324114B2 true JP7324114B2 (ja) 2023-08-09

Family

ID=75436815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019187103A Active JP7324114B2 (ja) 2019-10-10 2019-10-10 建設機械

Country Status (2)

Country Link
JP (1) JP7324114B2 (enExample)
WO (1) WO2021070736A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120898074A (zh) * 2023-03-28 2025-11-04 日立建机株式会社 液压泵状态监视装置以及液压驱动装置
CN119163669B (zh) * 2024-09-20 2025-03-25 武汉科技大学 一种用于液压元件内泄漏检测的阈值转换试验装置及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000046015A (ja) 1998-07-28 2000-02-15 Yutani Heavy Ind Ltd 油圧回路の自己診断装置
JP2013072454A (ja) 2011-09-27 2013-04-22 Daikin Industries Ltd 油圧ユニット
JP2019049204A (ja) 2017-09-07 2019-03-28 日立建機株式会社 油圧駆動装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3549989B2 (ja) * 1996-12-10 2004-08-04 日立建機株式会社 油圧作業機の油圧回路装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000046015A (ja) 1998-07-28 2000-02-15 Yutani Heavy Ind Ltd 油圧回路の自己診断装置
JP2013072454A (ja) 2011-09-27 2013-04-22 Daikin Industries Ltd 油圧ユニット
JP2019049204A (ja) 2017-09-07 2019-03-28 日立建機株式会社 油圧駆動装置

Also Published As

Publication number Publication date
WO2021070736A1 (ja) 2021-04-15
JP2021063524A (ja) 2021-04-22

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