KR970062451A - Hydraulic control valve device - Google Patents

Hydraulic control valve device Download PDF

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Publication number
KR970062451A
KR970062451A KR1019970005158A KR19970005158A KR970062451A KR 970062451 A KR970062451 A KR 970062451A KR 1019970005158 A KR1019970005158 A KR 1019970005158A KR 19970005158 A KR19970005158 A KR 19970005158A KR 970062451 A KR970062451 A KR 970062451A
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KR
South Korea
Prior art keywords
pressure
control valve
hydraulic
pressure chamber
piston
Prior art date
Application number
KR1019970005158A
Other languages
Korean (ko)
Other versions
KR100255013B1 (en
Inventor
다까시 신께
히데오 아라끼
Original Assignee
오까노 사다오
도시바 기까이 가부시끼가이샤
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
Priority claimed from JP03592496A external-priority patent/JP3488004B2/en
Priority claimed from JP00332397A external-priority patent/JP3558806B2/en
Application filed by 오까노 사다오, 도시바 기까이 가부시끼가이샤 filed Critical 오까노 사다오
Publication of KR970062451A publication Critical patent/KR970062451A/en
Application granted granted Critical
Publication of KR100255013B1 publication Critical patent/KR100255013B1/en

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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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • F15B13/027—Check valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides

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)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

피스톤 수단을 구비한 로드 체크 밸브를 병설한 유압 제어 밸브 장치에 있어서, 장치 전체를 소형으로 구성하는 동시에, 부하 압력이 낮은 액튜에이터의 단독 조작시에도 장치의 양호한 에너지 절약 특성을 유지하는 유압제어 밸브 장치를 제공하는 것을 과제로 한다.A hydraulic control valve device comprising a rod check valve provided with a piston means, the hydraulic control valve device of which the entire device is compact and maintains good energy saving characteristics of the device even when the actuator with low load pressure is operated alone. The task is to provide.

복수의 제어 밸브(14,16)를 거쳐서 복수의 작동기(10,12)를 하나의 펌프(20)로 구동하는 유압 회로의 특정(비우선 구동)의 제어 밸브(14)에 대해, 피스톤 수단(42)을 구비한 로드 체크 밸브(44)를 병설 형성한 유압 제어 밸브 장치(40)에 있어서, 피스톤 수단(42)에 형성한 각각의 압력실, 즉, 대형 피스톤부(42b)의 압력실(42c)에 다른 유압 장치(예를 들면 제어 밸브(16)로부터의 신호 압력(p)을 소형 피스톤부(42d)의 압력실(42e)에 평행 통로(22) 또는 공급 통로(14b)의 압력 중 높은 쪽 압력을 및 연장 소형 피스톤부(42f)의 보상 압력실(42g)에 상기 압력실(42e)과 동일 압력을 각각 작용시킨다. 또, 필요에 따라서 로드 체크 밸브에 형성한, 상기 압력실(42e)과 공급 통로(14b)의 사이의 접속부(62)를 로드 체크 밸브의 개구시에 연통하도록 구성한다.With respect to the control valve 14 of the specific (non-priority drive) of the hydraulic circuit which drives the plurality of actuators 10 and 12 with one pump 20 via the plurality of control valves 14 and 16, the piston means ( In the hydraulic control valve device 40 in which the rod check valve 44 having the valve 42 is provided in parallel, each of the pressure chambers formed in the piston means 42, that is, the pressure chamber of the large piston portion 42b ( The signal pressure p from the other hydraulic device (e.g., control valve 16) to 42c is transferred to the pressure chamber 42e of the small piston portion 42d in the parallel passage 22 or the supply passage 14b. The higher pressure is applied to the compensating pressure chamber 42g of the extended small piston portion 42f and the same pressure as the pressure chamber 42e, respectively. The connecting portion 62 between 42e) and the supply passage 14b is configured to communicate with each other when the rod check valve is opened.

Description

유압 제어 밸브 장치Hydraulic control valve device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 제1도에 도시한 로드 체크 밸브의 기본 실시예를 도시하는 확대도.FIG. 2 is an enlarged view showing a basic embodiment of the rod check valve shown in FIG.

제3도는 제1도에 도시한 로드 체크 밸브의 다른 기본 실시예를 도시하는 확대도.3 is an enlarged view showing another basic embodiment of the rod check valve shown in FIG.

제4도는 제2도에 도시한 로드 체크 밸브의 리프트시의 상태를 도시하는 확대 부분도.4 is an enlarged partial view showing a state at the time of lift of the load check valve shown in FIG.

제5도는 제1도에 도시한 로드 체크 밸브의 변경 실시예를 도시하는 확대도.5 is an enlarged view showing a modified embodiment of the load check valve shown in FIG.

제6도는 제5도에 도시한 로드 체크 밸브의 리프트시의 상태를 도시하는 확대 부분도.FIG. 6 is an enlarged partial view showing a state at the time of lift of the load check valve shown in FIG.

제7도는 종래의 유압 제어 밸브 장치를 도시하는 전체 단면도.7 is an overall sectional view showing a conventional hydraulic control valve device.

Claims (2)

평행하게 접속된 복수의 제어 밸브를 거쳐서 복수의 작동기를 하나의 펌프로 구동하는 유압 회로에 있어서의 상기 제어 밸브 중의 특정 제어 밸브에, 피스톤 수단을 구비한 로드 체크 밸브를 병설 형성한 유압 제어 밸브 장치로 이루어지며, 상기 피스톤 수단에 상기 특정 제어 밸브와는 다른 유압 장치로부터의 신호 압력을 작용시켜서 상기 로드 체크 밸브를 제어함으로써, 상기 특정 제어 밸브에 접속한 특정 액튜에이터보다 다른 제어 밸브에 접속한 다른 액튜에이터를 우선하여 구동하도록 구성한 유압 제어 밸브 장치에 있어서, 상기 피스톤 수단은 수압 면적이 큰 대형 피스톤부의 압력실과, 수압 면적이 작은 소형 피스톤부의 압력실과, 이 소형 피스톤부의 압력실의 피스톤 작용력을 상쇄하는 보상 압력실로 형성하고, 상기 대형 피스톤부의 압력실에는 다른 유압 장치로부터의 상기 신호 압력을 작용시키고, 상기 소형 피스톤부의 압력실에는 평행 통로의 압력이 특정 제어 밸브의 공급 통로 압력보다 낮을 때는 상기 특정 제어 밸브의 공급 통로 압력을 작용시키는 동시에, 평행 통로의 압력이 상기 특정 제어 밸브의 공급 통로 압력 보다 높을 때는 평행 통로의 압력 내지 이 압력과 상기 특정 제어 밸브의 공급 통로 압력의 중간 압력을 작용시키고, 상기 보상 압력실에는 소형 피스톤부의 압력실에 작용하는 상기 압력을 그대로 도입 작용시키도록 구성하는 것을 특징으로 하는 유압 제어 밸브 장치.A hydraulic control valve device in which a load check valve provided with a piston means is provided in a specific control valve of the control valve in a hydraulic circuit for driving a plurality of actuators with one pump via a plurality of control valves connected in parallel. Another actuator connected to a control valve other than a specific actuator connected to the specific control valve by controlling the rod check valve by applying a signal pressure from a hydraulic device different from the specific control valve to the piston means. In the hydraulic control valve device configured to drive the engine first, the piston means compensates for canceling the piston force of the pressure chamber of the large piston part having a large hydraulic pressure area, the pressure chamber of the small piston part having a small hydraulic pressure area, and the pressure chamber of the small piston part. Formed with a pressure chamber, the pressure of the large piston portion Is applied to the signal pressure from another hydraulic device, and when the pressure in the parallel passage is lower than the supply passage pressure of the specific control valve, the pressure passage of the specific control valve is actuated. When the pressure is higher than the supply passage pressure of the specific control valve, the pressure of the parallel passage to the pressure between the pressure and the supply passage pressure of the specific control valve are acted on, and the compensation pressure chamber acts on the pressure chamber of the small piston part. A hydraulic control valve device, characterized in that configured to introduce the pressure as it is. 제1항에 있어서, 또 로드 체크 밸브에는 소형 피스톤부의 압력실과 그 제어 밸브의 공급 통로 사이를 접속하는 접속부를 형성하고, 상기 접속부는 상기 로드 체크 밸브가 폐쇄되어 있을때는 차폐되고, 완전 개구되어 있을때는 연통되도록 구성하는 것을 특징으로 하는 유압 제어 밸브 장치.The rod check valve further comprises a connecting portion for connecting between the pressure chamber of the small piston portion and the supply passage of the control valve, wherein the connecting portion is shielded when the rod check valve is closed and fully opened. The hydraulic control valve device, characterized in that configured to communicate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019970005158A 1996-02-23 1997-02-20 Hydraulic pressure control valve mechanism KR100255013B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP03592496A JP3488004B2 (en) 1996-02-23 1996-02-23 Hydraulic control valve device
JP96-35924 1996-02-23
JP00332397A JP3558806B2 (en) 1997-01-10 1997-01-10 Hydraulic control valve device
JP97-3323 1997-01-10

Publications (2)

Publication Number Publication Date
KR970062451A true KR970062451A (en) 1997-09-12
KR100255013B1 KR100255013B1 (en) 2000-05-01

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KR1019970005158A KR100255013B1 (en) 1996-02-23 1997-02-20 Hydraulic pressure control valve mechanism

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725121B1 (en) * 2000-09-29 2007-06-04 가부시키가이샤 고마쓰 세이사쿠쇼 Control valve
KR200476559Y1 (en) * 2014-03-31 2015-03-12 한익수 in-line valve

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100559233B1 (en) * 1998-09-30 2006-08-10 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 Pressure compensation flow control valve
KR100595379B1 (en) * 2004-12-01 2006-06-30 현대모비스 주식회사 check valve for pump of electronic control type brake system
KR20080046140A (en) 2008-03-18 2008-05-26 이능수 A sympathizing valve device
KR101704042B1 (en) * 2010-12-24 2017-02-07 두산인프라코어 주식회사 Flow variable controller apparatus
CN103998794A (en) * 2011-12-15 2014-08-20 沃尔沃建造设备有限公司 Travel control system for construction machinery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627522B2 (en) * 1984-10-08 1994-04-13 カヤバ工業株式会社 Hydraulic control device
JPH02212684A (en) * 1989-02-14 1990-08-23 Teijin Seiki Co Ltd Relief valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725121B1 (en) * 2000-09-29 2007-06-04 가부시키가이샤 고마쓰 세이사쿠쇼 Control valve
KR200476559Y1 (en) * 2014-03-31 2015-03-12 한익수 in-line valve

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KR100255013B1 (en) 2000-05-01

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