JP2019049335A - 建設機械 - Google Patents

建設機械 Download PDF

Info

Publication number
JP2019049335A
JP2019049335A JP2017174669A JP2017174669A JP2019049335A JP 2019049335 A JP2019049335 A JP 2019049335A JP 2017174669 A JP2017174669 A JP 2017174669A JP 2017174669 A JP2017174669 A JP 2017174669A JP 2019049335 A JP2019049335 A JP 2019049335A
Authority
JP
Japan
Prior art keywords
discharge
pumps
pump
hydraulic
pressure
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.)
Pending
Application number
JP2017174669A
Other languages
English (en)
Japanese (ja)
Other versions
JP2019049335A5 (enExample
Inventor
貴雅 甲斐
Takamasa KAI
貴雅 甲斐
平工　賢二
Kenji Hiraku
賢二 平工
宏政 高橋
Hiromasa Takahashi
宏政 高橋
哲平 齋藤
Teppei Saito
哲平 齋藤
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 JP2017174669A priority Critical patent/JP2019049335A/ja
Priority to PCT/JP2018/032747 priority patent/WO2019054234A1/ja
Publication of JP2019049335A publication Critical patent/JP2019049335A/ja
Publication of JP2019049335A5 publication Critical patent/JP2019049335A5/ja
Pending legal-status Critical Current

Links

Images

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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • 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
    • E02F9/24—Safety devices, e.g. for preventing overload
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
JP2017174669A 2017-09-12 2017-09-12 建設機械 Pending JP2019049335A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017174669A JP2019049335A (ja) 2017-09-12 2017-09-12 建設機械
PCT/JP2018/032747 WO2019054234A1 (ja) 2017-09-12 2018-09-04 建設機械

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017174669A JP2019049335A (ja) 2017-09-12 2017-09-12 建設機械

Publications (2)

Publication Number Publication Date
JP2019049335A true JP2019049335A (ja) 2019-03-28
JP2019049335A5 JP2019049335A5 (enExample) 2020-04-09

Family

ID=65722767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017174669A Pending JP2019049335A (ja) 2017-09-12 2017-09-12 建設機械

Country Status (2)

Country Link
JP (1) JP2019049335A (enExample)
WO (1) WO2019054234A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020128662A (ja) * 2019-02-08 2020-08-27 日立建機株式会社 建設機械

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11391307B2 (en) * 2020-01-21 2022-07-19 Caterpillar Paving Products Inc. Hydraulic tank protection system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2520501Y2 (ja) * 1986-07-16 1996-12-18 新キャタピラー三菱 株式会社 液圧ポンプ又はモ−タの異常検出及び破損防止装置
JP2008196403A (ja) * 2007-02-14 2008-08-28 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd 油圧ポンプの異常判別装置
JP6636795B2 (ja) * 2015-12-24 2020-01-29 日立建機株式会社 作業機械

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020128662A (ja) * 2019-02-08 2020-08-27 日立建機株式会社 建設機械
JP7096178B2 (ja) 2019-02-08 2022-07-05 日立建機株式会社 建設機械

Also Published As

Publication number Publication date
WO2019054234A1 (ja) 2019-03-21

Similar Documents

Publication Publication Date Title
CN110352304B (zh) 工程机械
JP6157365B2 (ja) 建設機械で利用される電子油圧システムを制御するための、故障検知、分離、再構成システム及び方法
US10947699B2 (en) Construction machine
JP6244459B2 (ja) 作業機械
US10829908B2 (en) Construction machine
CN102459770B (zh) 工程机械及工程机械的控制方法
US9328480B2 (en) Hydraulic excavator
JP6654521B2 (ja) 建設機械
WO2016052209A1 (ja) 作業機械の油圧駆動システム
JP6450487B1 (ja) 油圧ショベル駆動システム
CN105658879B (zh) 动臂能量再生控制回路及控制方法
WO2014084213A1 (ja) 電動式油圧作業機械の油圧駆動装置
JPWO2018164238A1 (ja) ショベル
WO2019049327A1 (ja) 油圧駆動装置
WO2019054234A1 (ja) 建設機械
JP2018145984A (ja) 建設機械の油圧駆動装置
JP2022024770A (ja) 建設機械
CN108884843B (zh) 挖土机及挖土机用控制阀门
JP6591370B2 (ja) 建設機械の油圧制御装置
JP7444032B2 (ja) 建設機械
JP3643300B2 (ja) 油圧作業機械
JP6782272B2 (ja) 建設機械
JP5978176B2 (ja) 作業機械
JP7146669B2 (ja) 建設機械
JP7210397B2 (ja) 建設機械

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200228

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200228

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20201013

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20210406