KR970062217A - Speed regulator of crawler excavator driving motor - Google Patents

Speed regulator of crawler excavator driving motor Download PDF

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Publication number
KR970062217A
KR970062217A KR1019960002673A KR19960002673A KR970062217A KR 970062217 A KR970062217 A KR 970062217A KR 1019960002673 A KR1019960002673 A KR 1019960002673A KR 19960002673 A KR19960002673 A KR 19960002673A KR 970062217 A KR970062217 A KR 970062217A
Authority
KR
South Korea
Prior art keywords
traveling
speed
pump
control
switch
Prior art date
Application number
KR1019960002673A
Other languages
Korean (ko)
Other versions
KR0175729B1 (en
Inventor
이희덕
Original Assignee
김정국
현대중공업 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 김정국, 현대중공업 주식회사 filed Critical 김정국
Priority to KR1019960002673A priority Critical patent/KR0175729B1/en
Publication of KR970062217A publication Critical patent/KR970062217A/en
Application granted granted Critical
Publication of KR0175729B1 publication Critical patent/KR0175729B1/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
    • 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
    • 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
    • E02F9/26—Indicating devices

Abstract

본 발명은 크롤러식 굴삭기에서 작업 유무에 따른 주행모터의 회전속도 차이를 감소화시킨 주행모터의 속도 조절 장치에 관한 것으로, 종래장치에서는 선회작업과 같은 작업을 수행하면서 주행할 경우에는 주행직진밸브(6)가 작동하므로 제2펌프(2)로부터 공급되는 압유는 선회모터(12)에만 공급되고, 제1펌프(1)로부터 공급된 압유만이 상기 주행직진밸브(6)를 통해 분기되어, 주행모터(5,5')에 각각 공급되게 되므로, 주행만 단독으로 할 경우에 비해 주행모터(5,5')로 공급되는 유량이 급속히 감소하게 되어 적절한 주행속도를 얻을 수 없게 되는 문제점이 있었으나, 본 발명에서는 작업상태 유무를 판별하기 위한 압력스위치를 구비하고, 주행모터와 제3펌프 사이에 상기 압력스위치로부터 작업상태임이 판별되면 작동하게 되는 속도조절 밸브를 구비하여 작업을 주행과 동시에 할 경우 제3펌프에 의해 주행모터로 공급되는 압유가 보충되도록 하여 안정된 주행환경이 얻어지도록 하고 있다.The present invention relates to a speed adjusting device for a traveling motor in which the difference in rotational speed of a traveling motor is reduced in accordance with the presence or absence of work in a crawler excavator. In the conventional device, The hydraulic fluid supplied from the second pump 2 is supplied only to the swing motor 12 and only the hydraulic fluid supplied from the first pump 1 is diverted through the traveling straight-ahead valve 6, The flow rate supplied to the traveling motors 5 and 5 'is rapidly reduced compared with the case where only the traveling is performed alone, and the proper traveling speed can not be obtained. However, In the present invention, a speed control valve is provided between the traveling motor and the third pump to determine whether there is a working state, When the operation is performed simultaneously with the running, the pressure oil supplied to the traveling motor by the third pump is replenished so that a stable running environment is obtained.

Description

크롤러식 굴삭기 주행모터의 속도조절 장치Speed regulator of crawler excavator driving motor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 전기 유압회로도.FIG. 1 is an electric hydraulic circuit diagram of the present invention. FIG.

제2도는 종래 크롤러식 굴삭기의 유압회로도.FIG. 2 is a hydraulic circuit diagram of a conventional crawler excavator; FIG.

제3도는 종래 크롤러식 굴삭기에서 주행의 단독 동작할 경우를 설명하기 위해 일부 생략한 유압회로도.FIG. 3 is a hydraulic circuit diagram partially omitted in order to explain a case where a single operation of traveling is performed in a conventional crawler excavator.

제4도는 본 발명의 제어흐름도이다.4 is a control flow diagram of the present invention.

Claims (3)

제1펌프(1) 및 제2펌프(2)와, 주행모터(5,5')와, 상기 제1,2펌프(1,2)와 주행모터(5,5') 사이에 연결되며 그 제어단은 각각 주행페달(13)을 사이에 두고 제3펌프(3)으로부터의 파일롯트 압 라인과 연결되는 주행스풀(4,4')과, 상기 제1펌프(1)의 출력단과 제2펌프(2)의 출력단 사이에 연결되며 그 제어단은 상기 제3펌프(3)의 파일롯트 압 라인과 연결되는 주행직진 밸브(6)로 구성되는 크롤러식 굴삭기 주행모터의 속도조절 장치에 있어서; 상기 제3펌프(3)와 주행모터(5) 사이에서 압유라인에 의해 연결되는 속도조절 밸브(16)와, 제3펌프(3)의 파일롯트 압 라인과 입력단이 연결되고 그 토출단은 상기 속도 조절밸브(16)의 제어단에 연결되는 주행 1,2속 절환솔레노이드 밸브(15)와, 제3펌프(3)의 파일롯트 압 라인과 연결된 압력스위치(7)와, 상기 주행 1,2속 절환솔레노이드 밸브(15)의 제어단과 압력스위치(7)에 각각 연결되며 상기 압력스위치(7)로부터 설정치 이상의 압력신호가 입력될 경우 상기 주행 1,2속 절환 솔레노이드 밸브(15)의 제어단에 작동신호를 출력하도록 구성된 콘트롤러(11)를 구비한 것을 특징으로 하는 크롤러식 굴삭기 주행 모터의 속도조절 장치.The first and second pumps 1 and 2 and the traveling motors 5 and 5 'and the first and second pumps 1 and 2 and the traveling motors 5 and 5' The control end includes a traveling spool 4, 4 'connected to the pilot pressure line from the third pump 3 with the traveling pedal 13 therebetween, an output end of the first pump 1, And a traveling rectilinear valve (6) connected between an output end of the pump (2) and a control end thereof connected to a pilot pressure line of the third pump (3), the speed regulating device of a crawler excavator traveling motor comprising: A speed control valve 16 connected between the third pump 3 and the traveling motor 5 by a pressure oil line and a pilot pressure line and an input end of the third pump 3 are connected, Speed switching solenoid valve 15 connected to the control end of the speed control valve 16, a pressure switch 7 connected to the pilot pressure line of the third pump 3, Speed switching solenoid valve 15 and a pressure switch 7 when a pressure signal equal to or higher than a set value is inputted from the pressure switch 7 to the control end of the traveling / And a controller (11) configured to output an operation signal for controlling the speed of the crawler excavator traveling motor. 제1항에 있어서, 주행속도 자동조절 스위치(9)가 콘트롤러(11)에 연결되며, 상기 주행속도 자동조절 스위치(9)가 "ON"된 상태에서는 상기 콘트롤러(11)에서 주행 1,2속 절환 솔레노이드 밸브(15)의 제어단으로 출력되는 신호를 차단하지 않지만, 상기 주행속도 자동조절 스위치(9)가 "OFF"된 상태에서는 상기 콘트롤러(11)에서 주행 1,2속 절환 솔레노이드 밸브(15)의 제어단으로 출력되는 신호를 차단하도록 상기 주행속도 자동조절 스위치(9)와 콘트롤러(11)가 구성된 것을 특징으로 하는 크롤러식 굴삭기 주행모터의 속도조절 장치.2. The control system according to claim 1, wherein a traveling speed automatic adjustment switch (9) is connected to the controller (11), and when the traveling speed automatic adjustment switch (9) The controller 11 does not interrupt the signal outputted to the control end of the switching solenoid valve 15 but when the automatic speed control switch 9 is in the OFF state, And a controller (11) for automatically adjusting the traveling speed of the excavator to block the signal output to the control end of the crawler excavator traveling motor. 제2항에 있어서, 상기 주행속도 자동조절 스위치(9)에서 선택된 상태가 디스플레이(Display)되도록 계기판(10)이 상기 콘트롤러(11)에 연결된 것을 특징으로 하는 3롤러식 굴삭기 주행모터의 속도조절장치.3. The speed control device for a three-roller excavator drive motor according to claim 2, wherein the controller (11) is connected to the dashboard (10) so that a state selected by the automatic traveling speed control switch (9) . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960002673A 1996-02-05 1996-02-05 Speed regulating device of crawler excavator driving motor KR0175729B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960002673A KR0175729B1 (en) 1996-02-05 1996-02-05 Speed regulating device of crawler excavator driving motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960002673A KR0175729B1 (en) 1996-02-05 1996-02-05 Speed regulating device of crawler excavator driving motor

Publications (2)

Publication Number Publication Date
KR970062217A true KR970062217A (en) 1997-09-12
KR0175729B1 KR0175729B1 (en) 1999-04-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100406277B1 (en) * 2000-12-27 2003-11-17 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydrauric circuit of construction equipment
KR100773041B1 (en) * 2000-07-28 2007-11-02 가부시키가이샤 고마쓰 세이사쿠쇼 Hydraulic circuit for construction machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100540446B1 (en) * 1998-11-25 2006-02-28 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 Engine Speed Control Method of Wheeled Excavator_
KR100954504B1 (en) * 2004-12-16 2010-04-22 현대중공업 주식회사 Crawler Excavator Travel Speed Control by Travel Pilot Pressure
KR101356008B1 (en) * 2007-06-01 2014-01-27 볼보 컨스트럭션 이큅먼트 에이비 prevention device overspeed travel motor of crawler excavator
WO2015099207A1 (en) * 2013-12-23 2015-07-02 볼보 컨스트럭션 이큅먼트 에이비 Traveling control device for construction machine and control method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100773041B1 (en) * 2000-07-28 2007-11-02 가부시키가이샤 고마쓰 세이사쿠쇼 Hydraulic circuit for construction machine
KR100406277B1 (en) * 2000-12-27 2003-11-17 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydrauric circuit of construction equipment

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Publication number Publication date
KR0175729B1 (en) 1999-04-01

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