JP2007162450A - 建設機械の油圧回路 - Google Patents
建設機械の油圧回路 Download PDFInfo
- Publication number
- JP2007162450A JP2007162450A JP2006124595A JP2006124595A JP2007162450A JP 2007162450 A JP2007162450 A JP 2007162450A JP 2006124595 A JP2006124595 A JP 2006124595A JP 2006124595 A JP2006124595 A JP 2006124595A JP 2007162450 A JP2007162450 A JP 2007162450A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hydraulic
- swing
- flow path
- pressure oil
- 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.)
- Granted
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Classifications
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7058—Rotary output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
- F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
【解決手段】油圧回路は、第1油圧ポンプ11の圧油を供給・回収し作業装置シリンダ2を制御する作業制御弁13と、第2油圧ポンプ21に連結され圧油を作業機流路に合流させる合流弁23と、旋回装置を駆動する旋回モータ31,32に第2油圧ポンプの圧油を供給・回収する旋回制御弁30と、旋回流路上に設けられ合流弁23の切換時に旋回モータのうちの少なくとも何れかの一つに供給される圧油を遮断弁40で遮断すると同時に遮断された旋回モータの流入口と流出口とを連通させる。
【選択図】 図4
Description
掘削機などのような中・大型建設機械は、現場で、掘削や土砂採取などのような様々な作業を行う。建設機械の下部走行体5には、運転室と作業装置とを含む上部旋回体7が搭載されており、上部旋回体7は、旋回装置6により下部走行体5に対して中心軸Xを中心とし旋回自在である。土砂をすくい取る作業は、ブーム1とアーム3及びバケット4の作業装置が作動されることによって行われるが、採取した土砂をダンプトラックの荷台に積込む際には、作業装置と共に旋回装置6の動作も複合的に行われることになる。
2b :スモールチェンバー
2 :作業装置シリンダ
6 :旋回装置
10 :第1バルブグールプ
11 :第1油圧ポンプ
12 :第1並列流路
P1、P0、Ps:パイロット信号
13 :作業制御弁
14、15 :作業機流路
20 :第2バルブグールプ
21 :第2油圧ポンプ
22 :第2並列流路
23 :合流バルブ
30 :旋回制御弁
31、32 :油圧旋回モータ
33、34 :ピニオンギヤ
35、36 :旋回流路
37 :流入口
38 :流出口
39 :旋回ベアリング
40 :遮断弁
Claims (5)
- 第1油圧ポンプの圧油を作業機流路を介して供給・回収し、作業装置シリンダを制御する作業制御弁と、
第2油圧ポンプに連結された並列流路上に設けられ、切り換えることにより前記第2油圧ポンプの圧油を前記作業機流路に合流させる合流弁と、
前記並列流路上に設けられ、旋回装置を駆動する複数の油圧旋回モータに前記第2油圧ポンプの圧油を供給・回収し、前記油圧旋回モータを制御する旋回制御弁及び、
前記旋回制御弁と前記旋回モータとを連結する旋回流路上に設けられ、前記合流弁が切り換えられる際、共に切り換えられることによって、前記旋回モータのうちの少なくとも何れかの一つに供給される圧油を遮断すると共に、遮断された旋回モータの流入口と流出口とを連通させる遮断弁を含む建設機械の油圧回路。 - 前記合流弁は、パイロット信号圧により切り換えられ、前記遮断弁も前記合流弁に供給できる前記パイロット信号圧により切り換えられることを特徴とする請求項1に記載の建設機械の油圧回路。
- 前記合流弁は、電気信号により切り換えられ、前記遮断弁も前記合流弁に供給される前記電気信号により切り換えられることを特徴とする請求項1に記載の建設機械の油圧回路。
- 前記遮断弁は、手動操作により切り換え可能であることを特徴とする請求項1に記載の建設機械の油圧回路。
- 作業装置シリンダを駆動するための作業制御弁を含む第1バルブグループと、
旋回装置を駆動する複数の旋回油圧モータに旋回流路を介して連結でき、前記旋回モータに供給される圧油を制御する旋回制御弁を含む第2バルブグループと、
前記第2バルブグループと前記第1バルブグループとの間に設けられ、パイロット信号により切り換えられると、前記第2バルブグループの圧油の一部を前記作業装置シリンダ側に合流させる合流弁及び、
前記旋回流路上に設けられ、前記合流弁に入力される前記パイロット信号により切り換えられると、前記旋回モータの一部に供給できる圧油を遮断し、遮断された旋回モータの流入口と流出口とを連結する遮断弁を含む建設機械の油圧回路。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050120538A KR100665113B1 (ko) | 2005-12-09 | 2005-12-09 | 중장비의 유압회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007162450A true JP2007162450A (ja) | 2007-06-28 |
JP4545113B2 JP4545113B2 (ja) | 2010-09-15 |
Family
ID=37600839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006124595A Expired - Fee Related JP4545113B2 (ja) | 2005-12-09 | 2006-04-28 | 建設機械の油圧回路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7478531B2 (ja) |
EP (1) | EP1795657B1 (ja) |
JP (1) | JP4545113B2 (ja) |
KR (1) | KR100665113B1 (ja) |
CN (1) | CN100552239C (ja) |
DE (1) | DE602006018246D1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170130182A (ko) * | 2016-05-18 | 2017-11-28 | 두산인프라코어 주식회사 | 건설 기계의 안전 시스템 |
JP2018131890A (ja) * | 2017-02-16 | 2018-08-23 | 住友重機械工業株式会社 | ショベル |
CN111637104A (zh) * | 2020-04-22 | 2020-09-08 | 北京精密机电控制设备研究所 | 一种同轴模块化设计的三余度电静压伺服机构 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100791105B1 (ko) | 2006-05-23 | 2008-01-02 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 굴삭기 붐 속도 증속장치 |
KR20100012008A (ko) * | 2008-07-26 | 2010-02-04 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 선회 속도 조정시스템이 구비된 파이프 레이어 |
KR20110077061A (ko) * | 2009-12-30 | 2011-07-07 | 볼보 컨스트럭션 이큅먼트 에이비 | 오픈센터 방식의 굴삭기용 유압시스템의 선회모터 제어방법 |
DE102011119945A1 (de) * | 2011-12-01 | 2013-06-06 | Liebherr-Hydraulikbagger Gmbh | Hydrauliksystem |
WO2016163058A1 (ja) * | 2015-04-07 | 2016-10-13 | 株式会社クボタ | 作業機の油圧システム及びこの油圧システムを備えた作業機 |
US9663923B2 (en) * | 2015-08-14 | 2017-05-30 | Deere & Company | Valve stack assembly |
US11198987B2 (en) * | 2020-04-24 | 2021-12-14 | Caterpillar Inc. | Hydraulic circuit for a swing system in a machine |
IT202200005456A1 (it) * | 2022-03-21 | 2023-09-21 | Cnh Ind Italia Spa | Pala o scavatore |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5712467U (ja) * | 1980-06-24 | 1982-01-22 | ||
JPS6255337A (ja) * | 1985-08-30 | 1987-03-11 | Sumitomo Heavy Ind Ltd | 油圧シヨベルの油圧装置 |
JPS62284836A (ja) * | 1986-06-03 | 1987-12-10 | Sumitomo Heavy Ind Ltd | 油圧シヨベルの油圧回路 |
JPH04149326A (ja) * | 1990-10-12 | 1992-05-22 | Yutani Heavy Ind Ltd | 建設機械の油圧制御回路 |
JPH0653657U (ja) * | 1992-12-21 | 1994-07-22 | 新キャタピラー三菱株式会社 | 建設機械の旋回用油圧回路 |
JPH08159104A (ja) * | 1994-12-12 | 1996-06-18 | Hitachi Constr Mach Co Ltd | 油圧モータの駆動制御装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1035141A (en) * | 1964-05-07 | 1966-07-06 | Priestman Brothers | Improvements relating to civil engineering machines |
DE1952034A1 (de) * | 1969-10-15 | 1971-04-22 | Linde Ag | Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu |
DE3102532C1 (de) * | 1981-01-27 | 1982-09-30 | O & K Orenstein & Koppel Ag, 1000 Berlin | Schwenkantrieb fuer Foerdergeraete mit einem schwenkbaren Oberbau und einem schwenkbaren Verladebandausleger |
JPS62284835A (ja) * | 1986-06-03 | 1987-12-10 | Sumitomo Heavy Ind Ltd | 油圧シヨベルの油圧回路 |
JP2556697B2 (ja) * | 1987-03-30 | 1996-11-20 | 三陽機器株式会社 | ロ−ダのダンプ制御用油圧装置 |
JPH0230820A (ja) * | 1988-07-21 | 1990-02-01 | Kubota Ltd | バックホウの油圧回路 |
JP3597693B2 (ja) * | 1998-02-18 | 2004-12-08 | 日立建機株式会社 | 油圧駆動回路 |
-
2005
- 2005-12-09 KR KR1020050120538A patent/KR100665113B1/ko not_active IP Right Cessation
-
2006
- 2006-04-20 US US11/408,261 patent/US7478531B2/en not_active Expired - Fee Related
- 2006-04-27 CN CNB2006100771404A patent/CN100552239C/zh not_active Expired - Fee Related
- 2006-04-28 JP JP2006124595A patent/JP4545113B2/ja not_active Expired - Fee Related
- 2006-04-29 EP EP06008990A patent/EP1795657B1/en not_active Expired - Fee Related
- 2006-04-29 DE DE602006018246T patent/DE602006018246D1/de active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5712467U (ja) * | 1980-06-24 | 1982-01-22 | ||
JPS6255337A (ja) * | 1985-08-30 | 1987-03-11 | Sumitomo Heavy Ind Ltd | 油圧シヨベルの油圧装置 |
JPS62284836A (ja) * | 1986-06-03 | 1987-12-10 | Sumitomo Heavy Ind Ltd | 油圧シヨベルの油圧回路 |
JPH04149326A (ja) * | 1990-10-12 | 1992-05-22 | Yutani Heavy Ind Ltd | 建設機械の油圧制御回路 |
JPH0653657U (ja) * | 1992-12-21 | 1994-07-22 | 新キャタピラー三菱株式会社 | 建設機械の旋回用油圧回路 |
JPH08159104A (ja) * | 1994-12-12 | 1996-06-18 | Hitachi Constr Mach Co Ltd | 油圧モータの駆動制御装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170130182A (ko) * | 2016-05-18 | 2017-11-28 | 두산인프라코어 주식회사 | 건설 기계의 안전 시스템 |
KR102388136B1 (ko) | 2016-05-18 | 2022-04-19 | 현대두산인프라코어(주) | 건설 기계의 안전 시스템 |
JP2018131890A (ja) * | 2017-02-16 | 2018-08-23 | 住友重機械工業株式会社 | ショベル |
JP7113599B2 (ja) | 2017-02-16 | 2022-08-05 | 住友重機械工業株式会社 | ショベル |
CN111637104A (zh) * | 2020-04-22 | 2020-09-08 | 北京精密机电控制设备研究所 | 一种同轴模块化设计的三余度电静压伺服机构 |
Also Published As
Publication number | Publication date |
---|---|
KR100665113B1 (ko) | 2007-01-04 |
EP1795657A2 (en) | 2007-06-13 |
US20070130936A1 (en) | 2007-06-14 |
JP4545113B2 (ja) | 2010-09-15 |
EP1795657B1 (en) | 2010-11-17 |
EP1795657A3 (en) | 2008-12-24 |
DE602006018246D1 (de) | 2010-12-30 |
CN1978921A (zh) | 2007-06-13 |
CN100552239C (zh) | 2009-10-21 |
US7478531B2 (en) | 2009-01-20 |
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