JP4425805B2 - 油圧回路 - Google Patents
油圧回路 Download PDFInfo
- Publication number
- JP4425805B2 JP4425805B2 JP2005011537A JP2005011537A JP4425805B2 JP 4425805 B2 JP4425805 B2 JP 4425805B2 JP 2005011537 A JP2005011537 A JP 2005011537A JP 2005011537 A JP2005011537 A JP 2005011537A JP 4425805 B2 JP4425805 B2 JP 4425805B2
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- direction switching
- passage
- pump
- 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.)
- Active
Links
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Images
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of 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
- F15B11/02—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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with 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
- F15B2211/20576—Systems with pumps with multiple pumps
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
そして、本発明に係る油圧回路は、上記目的を達成するために以下のようないくつかの特徴を有している。即ち、本発明の油圧回路は、以下の特徴を単独で、もしくは、適宜組み合わせて備えている。
11 第1ポンプ
12 第2ポンプ
13 第3ポンプ
14 ブームシリンダ
15 バケットシリンダ
17 アームシリンダ
22 ブーム用方向切換弁
23 バケット用方向切換弁
27 アーム用方向切換弁
30 合流切換弁
31 第1合流通路
32 第2合流通路
33 第3合流通路
Claims (4)
- 第1ポンプからの圧油が供給され、ブームシリンダへの圧油の供給を制御するブーム用方向切換弁とバケットシリンダへの圧油の供給を制御するバケット用方向切換弁とを有する第1系統と、
第2ポンプからの圧油が供給され、アームシリンダへの圧油の供給を制御するアーム用方向切換弁を有する第2系統と、
第3ポンプからの圧油が供給される他の方向切換弁を有する第3系統と、
前記第3ポンプからの圧油を前記第1系統の前記ブーム用方向切換弁及び前記バケット用方向切換弁に供給可能な第1合流通路と、
前記第3ポンプからの圧油を前記第2系統の前記アーム用方向切換弁に供給可能な第2合流通路と、
を備えた油圧回路において、
前記第3ポンプからの圧油を前記第1系統の前記バケット用方向切換弁に供給可能な第3合流通路を設けたことを特徴とする油圧回路。 - 前記第1合流通路、前記第2合流通路、及び前記第3合流通路と、前記第3ポンプとの間に設けられる合流弁を備え、
前記合流弁は、
前記第1合流通路、前記第2合流通路、及び前記第3合流通路を、前記第3ポンプと連通する第1位置と、前記第1合流通路と前記第3ポンプとを連通するとともに、前記第2合流通路及び前記第3合流通路と前記第3ポンプとの間を遮断する第2位置と、を備え、
前記第2系統の方向切換弁が操作されたときに、前記第1位置に切り換わることを特徴とする請求項1に記載の油圧回路。 - 前記合流弁は、前記第1系統の方向切換弁のみが操作されたときには前記第2位置に切り換わり、前記第1系統の方向切換弁及び前記第2系統の方向切換弁が操作されたときには前記第1位置に切り換わることを特徴とする請求項2に記載の油圧回路。
- 前記第1合流通路において前記ブーム用方向切換弁と前記バケット用方向切換弁とが分岐する分岐位置よりも前記第3ポンプ側に設けられる第1絞りと、
前記第1合流通路において前記分岐位置と前記バケット用方向切換弁との間に設けられる第2絞りと、
前記第3合流通路に設けられる第3絞りと、
を更に備えていることを特徴とする請求項2又は請求項3に記載の油圧回路。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005011537A JP4425805B2 (ja) | 2005-01-19 | 2005-01-19 | 油圧回路 |
KR1020050109220A KR100671750B1 (ko) | 2005-01-19 | 2005-11-15 | 유압회로 |
IT000036A ITTO20060036A1 (it) | 2005-01-19 | 2006-01-19 | Circuito idraulico. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005011537A JP4425805B2 (ja) | 2005-01-19 | 2005-01-19 | 油圧回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006200179A JP2006200179A (ja) | 2006-08-03 |
JP4425805B2 true JP4425805B2 (ja) | 2010-03-03 |
Family
ID=36958421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005011537A Active JP4425805B2 (ja) | 2005-01-19 | 2005-01-19 | 油圧回路 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4425805B2 (ja) |
KR (1) | KR100671750B1 (ja) |
IT (1) | ITTO20060036A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4302724B2 (ja) * | 2006-09-29 | 2009-07-29 | 株式会社クボタ | バックホーの油圧システム |
JP5455563B2 (ja) * | 2009-11-04 | 2014-03-26 | カヤバ工業株式会社 | 油圧回路装置 |
JP6196499B2 (ja) * | 2013-08-20 | 2017-09-13 | ナブテスコ株式会社 | 建設機械の多連方向切換弁 |
JP6555709B2 (ja) | 2015-04-17 | 2019-08-07 | キャタピラー エス エー アール エル | 流体圧回路および作業機械 |
JP6763326B2 (ja) * | 2017-03-14 | 2020-09-30 | コベルコ建機株式会社 | 油圧回路 |
CN108869430B (zh) * | 2018-09-18 | 2020-08-14 | 浙江智伦机电有限公司 | 一种小型分配阀 |
KR102253574B1 (ko) | 2019-10-07 | 2021-05-20 | 주식회사 진우에스엠씨 | 이동형 작업기계의 주행부 록킹 어셈블리를 포함하는 유압회로 |
KR102308956B1 (ko) | 2019-10-07 | 2021-10-07 | 주식회사 진우에스엠씨 | 이동형 작업기계의 주행 동기화를 위한 유압회로 |
KR102340886B1 (ko) | 2019-10-07 | 2021-12-21 | 주식회사 진우에스엠씨 | 이동형 작업기계의 마력 제어를 위한 유압회로 |
KR102273327B1 (ko) | 2019-10-07 | 2021-07-07 | 주식회사 진우에스엠씨 | 다목적용 유압시스템의 펌프 유량 제어를 위한 유압회로 |
-
2005
- 2005-01-19 JP JP2005011537A patent/JP4425805B2/ja active Active
- 2005-11-15 KR KR1020050109220A patent/KR100671750B1/ko active IP Right Grant
-
2006
- 2006-01-19 IT IT000036A patent/ITTO20060036A1/it unknown
Also Published As
Publication number | Publication date |
---|---|
KR20060084349A (ko) | 2006-07-24 |
ITTO20060036A1 (it) | 2006-07-20 |
KR100671750B1 (ko) | 2007-01-22 |
JP2006200179A (ja) | 2006-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4425805B2 (ja) | 油圧回路 | |
JP4907231B2 (ja) | エネルギー回生型動力装置 | |
JP4139352B2 (ja) | 油圧制御装置 | |
JP4541209B2 (ja) | 油圧回路 | |
KR100627627B1 (ko) | 건설기계의 유압회로 | |
WO2005019656A1 (ja) | 油圧駆動制御装置 | |
US9057175B2 (en) | Construction machine with hydraulic circuit | |
JP2006329341A (ja) | 作業機械の油圧制御装置 | |
JP4817974B2 (ja) | 建設機械の動力装置 | |
JP4106011B2 (ja) | 油圧回路及びその合流弁 | |
JP4948046B2 (ja) | 建設機械の動力装置 | |
JP4100690B2 (ja) | ブーム合流用スプールを利用した重装備オプション装置用油圧回路 | |
KR101260072B1 (ko) | 굴삭기의 복합동작 제어용 유압제어시스템 | |
JP4768002B2 (ja) | 建設機械の油圧回路 | |
JP2003184815A (ja) | 建設機械の油圧制御装置及び油圧ショベルの油圧制御装置 | |
JP2007120512A (ja) | 作業機械の油圧制御装置 | |
JP3820334B2 (ja) | 建設車両用油圧回路とそれに用いるバルブ構造 | |
KR20050066041A (ko) | 굴삭기의 주행복합작업용 유압제어장치 | |
JP4926627B2 (ja) | 電油システム | |
KR20200135275A (ko) | 작업 차량의 유압 회로 | |
JP4260850B2 (ja) | 油圧回路 | |
JP4795875B2 (ja) | 建設機械の昇圧回路、建設機械の昇圧回路の供給部体 | |
JP2010101448A (ja) | 作業機械の油圧制御装置 | |
JP7373406B2 (ja) | 油圧回路および建設機械 | |
KR102083034B1 (ko) | 굴삭기의 메인 컨트롤 밸브 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20070829 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071010 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091126 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20091208 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091209 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4425805 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121218 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121218 Year of fee payment: 3 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121218 Year of fee payment: 3 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121218 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131218 Year of fee payment: 4 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |