JP2021095950A - 建設機械の油圧回路 - Google Patents

建設機械の油圧回路 Download PDF

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Publication number
JP2021095950A
JP2021095950A JP2019227150A JP2019227150A JP2021095950A JP 2021095950 A JP2021095950 A JP 2021095950A JP 2019227150 A JP2019227150 A JP 2019227150A JP 2019227150 A JP2019227150 A JP 2019227150A JP 2021095950 A JP2021095950 A JP 2021095950A
Authority
JP
Japan
Prior art keywords
traveling
switching valve
negative control
pressure
direction switching
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
JP2019227150A
Other languages
English (en)
Japanese (ja)
Inventor
純弥 小野
Junya Ono
純弥 小野
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.)
Yanmar Power Technology Co Ltd
Original Assignee
Yanmar Power Technology 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 Yanmar Power Technology Co Ltd filed Critical Yanmar Power Technology Co Ltd
Priority to JP2019227150A priority Critical patent/JP2021095950A/ja
Priority to PCT/JP2020/042803 priority patent/WO2021124767A1/fr
Publication of JP2021095950A publication Critical patent/JP2021095950A/ja
Pending legal-status Critical Current

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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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • 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
    • 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
    • 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
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • 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
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
JP2019227150A 2019-12-17 2019-12-17 建設機械の油圧回路 Pending JP2021095950A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019227150A JP2021095950A (ja) 2019-12-17 2019-12-17 建設機械の油圧回路
PCT/JP2020/042803 WO2021124767A1 (fr) 2019-12-17 2020-11-17 Circuit hydraulique pour engin de chantier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019227150A JP2021095950A (ja) 2019-12-17 2019-12-17 建設機械の油圧回路

Publications (1)

Publication Number Publication Date
JP2021095950A true JP2021095950A (ja) 2021-06-24

Family

ID=76430964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019227150A Pending JP2021095950A (ja) 2019-12-17 2019-12-17 建設機械の油圧回路

Country Status (2)

Country Link
JP (1) JP2021095950A (fr)
WO (1) WO2021124767A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004316839A (ja) * 2003-04-18 2004-11-11 Kayaba Ind Co Ltd 液圧駆動装置
JP5551122B2 (ja) * 2011-07-14 2014-07-16 住友建機株式会社 建設機械

Also Published As

Publication number Publication date
WO2021124767A1 (fr) 2021-06-24

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Effective date: 20200828