KR960023540A - Driving system of heavy equipment - Google Patents

Driving system of heavy equipment Download PDF

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Publication number
KR960023540A
KR960023540A KR1019940040159A KR19940040159A KR960023540A KR 960023540 A KR960023540 A KR 960023540A KR 1019940040159 A KR1019940040159 A KR 1019940040159A KR 19940040159 A KR19940040159 A KR 19940040159A KR 960023540 A KR960023540 A KR 960023540A
Authority
KR
South Korea
Prior art keywords
valve
pressure
pump
heavy equipment
oil discharged
Prior art date
Application number
KR1019940040159A
Other languages
Korean (ko)
Other versions
KR970011612B1 (en
Inventor
이정민
Original Assignee
석진철
대우중공업 주식회사
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 석진철, 대우중공업 주식회사 filed Critical 석진철
Priority to KR1019940040159A priority Critical patent/KR970011612B1/en
Publication of KR960023540A publication Critical patent/KR960023540A/en
Application granted granted Critical
Publication of KR970011612B1 publication Critical patent/KR970011612B1/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
    • E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

본 발명은 중장비의 주행구동시스템에 관한 것으로, 중장비의 제1펌프(1)에서 토출되는 압유를 좌측 컨트롤 밸브블록(3)으로 이송시키는 제1메인바이패스라인(11)과 제2펌프(2)에서 토출되는 압유를 우측 컨트롤 밸브블록(4)으로 이송시키는 제2메인바이패스라인(12)에서 각각 압력보상밸브(13)와 셀렉트밸브(14)가 설치되고, 상기 각 보상밸브(13)에는 제1 및 제2서브바이패스라인(17,18)이 각각 연결되며, 상기 서브바이패스라인(17,18)에 전체 유압회로를 보호하기 위한 릴리이프밸브(19,20)가 설치되어 있는 한편, 상기 압력보상밸브(13)와 좌우측 주행스푸울(15,16) 사이가 파일롯신호라인(22)으로 연결되어져, 상기 압력보상밸브(13)에 의한 조절압력이 상기 주행스푸울(15,16)로 직접 전달되어지게 되어지도록 한 구조로 이루어져, 주행작동을 타 작동기와 독립적으로 이루어지게 할 수가 있고, 또한 이와 같이 주행속도가 타 작동기와 상관없이 이루어지게 되므로 인하여 주행의 미세한 조작이 가능해지도록 되어 있다.The present invention relates to a traveling drive system for heavy equipment, and includes a first main bypass line (11) and a second pump (2) for transferring the pressure oil discharged from the first pump (1) of the heavy equipment to the left control valve block (3). The pressure compensation valve 13 and the selector valve 14 are respectively installed in the second main bypass line 12 for transferring the pressurized oil discharged from the valve to the right control valve block 4. First and second sub bypass lines 17 and 18 are respectively connected to each other, and relief valves 19 and 20 are installed in the sub bypass lines 17 and 18 to protect the entire hydraulic circuit. On the other hand, between the pressure compensation valve 13 and the left and right running springs (15, 16) is connected by a pilot signal line 22, so that the adjustment pressure by the pressure compensation valve 13 is the running spring (15, 16) It is structured to be directly transmitted to, and the driving operation is independent of other actuators. Able to be achieved, and also are such that enables the running speed so that a fine manipulation of the running due to be fulfilled, because the other, regardless of the actuator.

Description

중장비의 주행구동시스템Driving system of heavy equipment

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

제1도는 본 발명에 따른 중장비의 주행구동시스템을 도시한 유압회로도, 제2도는 제1도의 A부분에 대한 확대도, 제3도는 종래의 중장비에서 사용되는 주행구동시스템을 도시한 유압회로도이다.FIG. 1 is a hydraulic circuit diagram showing a driving drive system of heavy equipment according to the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, and FIG. 3 is a hydraulic circuit diagram showing a driving drive system used in conventional heavy equipment.

Claims (1)

제1펌프(1)와 제2펌프(2)에서 토출되는 압유가 각각 좌우측 컨트롤밸브블록(3,4)을 통해서 이들 밸브블록(3,4)에 연결된 좌우 주행모우터(5,6) 및 각 작동기(7,8,9,10)로 공급되어 작동하도록 된 중장비의 구동시스템에 있어서, 상기 제1펌프(1)에서 토출되는 압유를 좌측 컨트롤밸브블록(3)으로 이송시키는 제1메인바이패스라인(11)과 제2펌프(2)에서 토출되는 압유를 우측 컨트롤밸브블록(4)으로 이송시키는 제2메인바이패스라인(12)에 각각 압력보상밸브(13)와 교축밸브(14)가 설치되고, 상기 각 보상밸브(13)에는 제1 및 제2서브바이패스라인(17,18)이 각각 연결되며, 상기 서브바이패스라인(17,18)에 전체 유압회로를 보호하기 위한 릴리이프밸브(19,20)가 설치되어 있는 한편, 상기 압력보상밸브(13)와 좌우측 주행스푸울(15,16) 사이가 파일롯신호라인(22)으로 연결되어져, 상기 압력보상밸브(13)에 의한 조절압력이 상기 주행스푸울(15,16)로 직접 전달되어지게 되어지도록 된 것을 특징으로 하는 중장비의 주행구동시스템.Left and right traveling motors 5 and 6 connected to the valve blocks 3 and 4 by the hydraulic oil discharged from the first pump 1 and the second pump 2 through the left and right control valve blocks 3 and 4, respectively; In the drive system of the heavy equipment, which is supplied to each actuator (7, 8, 9, 10) to operate, the first main bypass for transferring the pressure oil discharged from the first pump (1) to the left control valve block (3) The pressure compensation valve 13 and the throttling valve 14 are respectively provided in the second main bypass line 12 for transferring the pressurized oil discharged from the pass line 11 and the second pump 2 to the right control valve block 4. The first and second sub bypass lines (17, 18) are connected to each of the compensation valves 13, respectively, and the relief for protecting the entire hydraulic circuit in the sub bypass lines (17, 18) is provided. If the valves 19 and 20 are installed, the pressure compensation valve 13 and the left and right running springs 15 and 16 are connected by a pilot signal line 22, The driving pressure system of the heavy equipment, characterized in that the control pressure by the pressure compensation valve 13 is to be transmitted directly to the driving spun (15, 16). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940040159A 1994-12-30 1994-12-30 Travel driving system for heavy equipment KR970011612B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940040159A KR970011612B1 (en) 1994-12-30 1994-12-30 Travel driving system for heavy equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940040159A KR970011612B1 (en) 1994-12-30 1994-12-30 Travel driving system for heavy equipment

Publications (2)

Publication Number Publication Date
KR960023540A true KR960023540A (en) 1996-07-20
KR970011612B1 KR970011612B1 (en) 1997-07-12

Family

ID=19406020

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940040159A KR970011612B1 (en) 1994-12-30 1994-12-30 Travel driving system for heavy equipment

Country Status (1)

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KR (1) KR970011612B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100503611B1 (en) * 1998-07-24 2005-09-26 두산인프라코어 주식회사 Hydraulic control system of telescopic handler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100618212B1 (en) 2003-10-16 2006-09-01 엘지전자 주식회사 Control system and method for refrigerant temperature of air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100503611B1 (en) * 1998-07-24 2005-09-26 두산인프라코어 주식회사 Hydraulic control system of telescopic handler

Also Published As

Publication number Publication date
KR970011612B1 (en) 1997-07-12

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