KR100621973B1 - 건설중장비용 유량제어장치 - Google Patents
건설중장비용 유량제어장치 Download PDFInfo
- Publication number
- KR100621973B1 KR100621973B1 KR1020010082765A KR20010082765A KR100621973B1 KR 100621973 B1 KR100621973 B1 KR 100621973B1 KR 1020010082765 A KR1020010082765 A KR 1020010082765A KR 20010082765 A KR20010082765 A KR 20010082765A KR 100621973 B1 KR100621973 B1 KR 100621973B1
- Authority
- KR
- South Korea
- Prior art keywords
- valve
- pilot
- passage
- hydraulic
- variable throttle
- Prior art date
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Classifications
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- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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- 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
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
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- 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
- E02F9/2285—Pilot-operated systems
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- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
Claims (2)
- 유압펌프와, 유압펌프에 연결되어 작동유 공급으로 구동하는 유압실린더와, 유압펌프와 유압실린더사이의 유로에 설치되어 유압실린더에 공급되는 작동유의 흐름방향을 제어하는 제어밸브와, 제어밸브의 공급통로와 펌프통로사이의 유로에 설치되는 유량조절밸브를 구비하는 건설중장비용 유량제어장치에 있어서:상기 유량조절밸브(30)는;상기 펌프통로(5)와 공급통로(7A,7B)사이의 유로에 개폐가능하게 설치되며 이동량에 따라 상기 펌프통로(5)로 부터 공급통로(7A,7B)로의 개구면적을 변화시키는 보조가변스로틀(31a)이 형성된 제1시트밸브(31); 및파일럿작동압 공급시 제1시트밸브(31)에 대해 이동하여 제1시트밸브(31)의 이동량을 결정하고, 이동량에 따라 개구면적이 변화되는 파일럿 제어가변스로틀(33)를 갖는 제2시트밸브(32); 및주가변스로틀(102A,102B) 전후의 신호압력(21,22)차에 의해 절환되어 제2시트밸브(32)의 파일럿 제어가변스로틀(33)의 이동량을 결정하는 파일럿 가변스로틀(34)을 갖는 파일럿 절환스풀(25)을 구비하는 것을 특징으로 하는 건설중장비용 유량제어장치.
- 제 1 항에 있어서, 상기 파일럿 절환스풀(25)은 부하통로(6A,6B)와 유압실린더(300)포트 사이에 설치된 주가변스로틀(202A,202B)전후의 신호압력(21,22)차에 의해 절환되는 것을 특징으로 하는 건설중장비용 유량제어장치.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010082765A KR100621973B1 (ko) | 2001-12-21 | 2001-12-21 | 건설중장비용 유량제어장치 |
US10/247,547 US6745564B2 (en) | 2001-12-21 | 2002-09-19 | Hydraulic variable control apparatus for heavy construction equipment |
GB0222413A GB2383382B (en) | 2001-12-21 | 2002-09-26 | Hydraulic variable control apparatus for heavy construction equipment |
JP2002289480A JP3924519B2 (ja) | 2001-12-21 | 2002-10-02 | 建設重装備用油量可変制御装置 |
DE10247507A DE10247507B4 (de) | 2001-12-21 | 2002-10-11 | Hydraulische variable Regelvorrichtung für schweres Baugerät |
CN02146851.6A CN1246597C (zh) | 2001-12-21 | 2002-10-15 | 用于重型施工设备的液压可变控制装置 |
IT002312A ITMI20022312A1 (it) | 2001-12-21 | 2002-10-30 | Dispositivo idraulico di controllo variabile per macchine |
FR0214245A FR2834019B1 (fr) | 2001-12-21 | 2002-11-14 | Appareil a commande hydraulique variable pour materiel de construction lourde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010082765A KR100621973B1 (ko) | 2001-12-21 | 2001-12-21 | 건설중장비용 유량제어장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030052737A KR20030052737A (ko) | 2003-06-27 |
KR100621973B1 true KR100621973B1 (ko) | 2006-09-13 |
Family
ID=37421713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020010082765A KR100621973B1 (ko) | 2001-12-21 | 2001-12-21 | 건설중장비용 유량제어장치 |
Country Status (1)
Country | Link |
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KR (1) | KR100621973B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100914881B1 (ko) * | 2009-03-26 | 2009-08-31 | 삼성탈레스 주식회사 | 중하중 안테나 전개를 위한 유압 회로 |
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2001
- 2001-12-21 KR KR1020010082765A patent/KR100621973B1/ko active IP Right Grant
Non-Patent Citations (1)
Title |
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The cover and drawing one copy. end of the appendix 1 Hyundai Heavy Industry ‘ hydraulic excavator R290LC-7 #1 service manual ’. 첨부1 현대중공업의‘유압굴착기 R290LC-7 #1 서비스 매뉴얼’의 표지 및 도면 1부. 끝. * |
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Publication number | Publication date |
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KR20030052737A (ko) | 2003-06-27 |
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