WO2015099207A1 - Dispositif de commande de translation pour engin de chantier et son procédé associé - Google Patents

Dispositif de commande de translation pour engin de chantier et son procédé associé Download PDF

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Publication number
WO2015099207A1
WO2015099207A1 PCT/KR2013/012026 KR2013012026W WO2015099207A1 WO 2015099207 A1 WO2015099207 A1 WO 2015099207A1 KR 2013012026 W KR2013012026 W KR 2013012026W WO 2015099207 A1 WO2015099207 A1 WO 2015099207A1
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WO
WIPO (PCT)
Prior art keywords
driving
traveling
hydraulic
pressure
pump
Prior art date
Application number
PCT/KR2013/012026
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English (en)
Korean (ko)
Inventor
박형석
조성용
Original Assignee
볼보 컨스트럭션 이큅먼트 에이비
박형석
조성용
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 볼보 컨스트럭션 이큅먼트 에이비, 박형석, 조성용 filed Critical 볼보 컨스트럭션 이큅먼트 에이비
Priority to PCT/KR2013/012026 priority Critical patent/WO2015099207A1/fr
Publication of WO2015099207A1 publication Critical patent/WO2015099207A1/fr

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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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/421—Motor capacity control by electro-hydraulic control means, e.g. using solenoid valves
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation

Definitions

  • the present invention relates to a traveling control device for a construction machine and a control method thereof, and more particularly, to a traveling control device for a construction machine and a control method thereof that can prevent the running of the piece during the driving operation.
  • first and second hydraulic pumps (hereinafter referred to as first and second hydraulic pumps) and pilot pumps 3;
  • a variable displacement first driving motor 4 operated by the hydraulic oil of the first hydraulic pump 1;
  • a variable displacement second driving motor 5 operated by the operating oil of the second hydraulic pump 2;
  • a first travel control valve installed in a flow path between the first hydraulic pump 1 and the first travel motor 4 and controlling an amount and a flow direction of the working oil supplied to the first travel motor 4 during switching; (6);
  • a second driving control valve installed in a flow path between the second hydraulic pump 2 and the second driving motor 5 and controlling an amount and a flow direction of the working oil supplied to the second driving motor 5 during switching; (7);
  • a first driving control device 8 installed in a flow path between the pilot pump 3 and the first travel control valve 6 and applying a pilot pressure for switching the first travel control valve 6 during operation; ;
  • a second driving control device 9 installed in a flow path between the pilot pump 3 and the second driving control valve 7 and applying a pilot pressure for switching the second driving control valve 7 during operation; ;
  • a traveling speed selection valve 12 installed in a flow path between the pilot pump 3 and the driving units 10 and 11 of the first and second running motors 4 and 5;
  • On and off switch 13 for applying a control signal for switching the traveling speed selection valve 12 is provided.
  • the driving units 10 and 11 of the first and second driving motors 4 and 5 are connected to the first and second driving motors 4 and 5 through signal lines a and b.
  • High-speed driving pilot pressure of the pilot pump 3 through the signal lines (c, d) by switching the operating pressure of the first and second hydraulic pumps (1,2) for driving the driving speed selection valve 12 Will receive.
  • low speed driving first speed driving; the state in which the volume of the driving motor is maximized
  • the motor is converted to high speed driving (2 speed running; the state in which the volume of the running motor is minimized).
  • the driving speed selection of the first and second running motors 4 and 5 may be different.
  • an object of the present invention is to provide a traveling control apparatus for a construction machine and a method of controlling the same, which can improve the operability by preventing the driving during driving and simplify the hydraulic circuit forming the traveling motor. The purpose.
  • variable displacement first and second hydraulic pump and pilot pump
  • a first driving control valve installed in a flow path between the first hydraulic pump and the first driving motor and controlling an amount and a flow direction of the working oil supplied to the first driving motor during switching;
  • a second driving control valve installed in a flow path between the second hydraulic pump and the second driving motor and controlling an amount and a flow direction of the working oil supplied to the second driving motor during switching;
  • a first driving manipulation device installed in a flow path between the pilot pump and the first running control valve and applying a pilot pressure for switching the first running control valve during operation;
  • a second driving control device installed in a flow path between the pilot pump and the second driving control valve and applying a pilot pressure for switching the second driving control valve during operation;
  • a traveling speed selection valve installed in a flow path between the pilot pump and the driving units of the first and second running motors
  • the detected hydraulic oil pressure of the first and second hydraulic pumps is compared with a predetermined specific pressure, and the hydraulic oil pressure of the first and second hydraulic pumps is set to a predetermined pressure.
  • high speed driving of the first and second running motors is maintained, and when the hydraulic oil pressure of the first and second hydraulic pumps is higher than a specific pressure, the first and second running motors are operated at low speed by switching of the traveling speed selection valve.
  • a variable displacement first and second hydraulic pump and pilot pump comprising: a controller for inputting a control signal to switch the traveling speed selection valve:
  • the driving speed selector valve is switched so that both drive parts of the first and second running motor are switched to low speed driving. do.
  • the first and second pressure sensors installed upstream of the supply flow path of the first and second hydraulic pumps, and the first and second pressure sensors are hydraulic oil pressure of the first and second hydraulic pumps supplied to the first and second traveling motors. Detects and inputs a detection signal to the controller.
  • solenoid valve is switched to the on state in order to apply the hydraulic pressure of the pilot pump to the drive unit of the first and second running motor at the high speed driving.
  • the left and right traveling motors maintain high-speed driving or switch the left and right traveling motors to low-speed driving according to the operating pressure of the hydraulic pump during the 2-speed driving, There is an effect of improving the operability and simplifying the hydraulic circuit forming the traveling motor.
  • FIG. 1 is a hydraulic circuit diagram of a traveling control device for a construction machine according to the prior art
  • FIG. 2 is a hydraulic circuit diagram of a traveling control device for a construction machine according to a preferred embodiment of the present invention
  • FIG. 3 is a flowchart illustrating a control method of a traveling control apparatus for a construction machine according to an exemplary embodiment of the present invention.
  • FIG. 2 is a hydraulic circuit diagram of a traveling control device for a construction machine according to a preferred embodiment of the present invention
  • Figure 3 is a flow chart of a control method of the traveling control device for a construction machine according to a preferred embodiment of the present invention.
  • the traveling control apparatus for a construction machine includes a variable displacement first and second hydraulic pumps (hereinafter, referred to as first and second hydraulic pumps) and pilots.
  • a variable displacement first driving motor 4 operated by the hydraulic oil of the first hydraulic pump 1;
  • a variable displacement second driving motor 5 operated by the operating oil of the second hydraulic pump 2;
  • a first travel control valve installed in a flow path between the first hydraulic pump 1 and the first travel motor 4 and controlling an amount and a flow direction of the working oil supplied to the first travel motor 4 during switching; (6);
  • a second driving control valve installed in a flow path between the second hydraulic pump 2 and the second driving motor 5 and controlling an amount and a flow direction of the working oil supplied to the second driving motor 5 during switching; (7);
  • a first driving control device 8 installed in a flow path between the pilot pump 3 and the first travel control valve 6 and applying a pilot pressure for switching the first travel control valve 6 during operation; ;
  • a second driving control device 9 installed in a flow path between the pilot pump 3 and the second driving control valve 7 and applying a pilot pressure for switching the second driving control valve 7 during operation; ;
  • a traveling speed selection valve 12 installed in a flow path between the pilot pump 3 and the driving units 10 and 11 of the first and second running motors 4 and 5;
  • the first and second hydraulic pumps are compared by comparing the detected hydraulic oil pressure of the first and second hydraulic pumps 4 and 5 with a predetermined specific pressure.
  • the hydraulic oil pressure of (1, 2) is below a predetermined specific pressure, the high-speed running of the first and second traveling motors 4 and 5 is maintained, and the hydraulic oil pressure of the first and second hydraulic pumps 1 and 2 is increased.
  • the controller 14 is
  • both driving units 10 and 11 of the first and second traveling motors 4 and 5 are low speed.
  • the traveling speed selection valve 12 may be switched to switch to traveling.
  • the first and second pressure sensors 15 and 16 and the first and second pressure sensors 15 and 16 installed upstream of the supply passages 1a and 2a of the first and second hydraulic pumps 1 and 2 are provided.
  • the hydraulic oil pressure of the first and second hydraulic pumps 1 and 2 supplied to the first and second traveling motors 4 and 5 may be detected to input a detection signal to the controller 14.
  • It may be a solenoid valve which is switched to an ON state in order to apply hydraulic pressure of the pilot pump 3 to the driving units 10 and 11 of the first and second driving motors 4 and 5 at high speed. .
  • the control method of the traveling control device for a construction machine the variable displacement first and second hydraulic pump (1, 2) and the pilot pump (3); Variable displacement first and second traveling motors 4 and 5 connected to the first and second hydraulic pumps 1 and 2, respectively;
  • a first travel control valve 6 installed in a flow path between the first hydraulic pump 1 and the first travel motor 4;
  • a second driving control valve 7 installed in a flow path between the second hydraulic pump 2 and the second driving motor 5;
  • a first driving control device (8) installed in a flow path between the pilot pump (3) and the first driving control valve (6);
  • a second driving control device (9) installed in a flow path between the pilot pump (3) and the second driving control valve (7);
  • First and second pressure sensors 15 and 16 installed upstream of the supply passages 1a and 2a of the first and second hydraulic pumps 1 and 2;
  • a traveling speed selection valve 12 installed in a flow path between the pilot pump 3 and the driving units 10 and 11 of the first and second running motors 4 and 5;
  • the hydraulic oil pressure of the first and second hydraulic pumps 1 and 2 is converted into the first and second pressure sensors 15 and 16. (S100).
  • the hydraulic oil pressure values detected by the first and second pressure sensors 15 and 16 are input to the controller 14.
  • the hydraulic oil of the pilot pump 3 passes through the traveling speed selection valve 12. Since the first and second traveling motors 4 and 5 are applied to the driving units 10 and 11 of the traveling motors 4 and 5, the first and second traveling motors 4 and 5 are driven at a high speed (two speeds; the volume of the driving motor is minimized). Will be maintained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

Cette invention concerne un dispositif de commande de translation pour un engin de chantier qui peut éviter une translation détournée au cours d'une manipulation de translation et son procédé de commande associé. Ledit dispositif de commande de translation pour engin de chantier comprend : une première et une seconde pompe hydraulique du type à cylindrée variable et une pompe pilote ; un premier et un second moteur de translation à cylindrée variable ; une première soupape de commande de translation installée dans un canal entre la première pompe hydraulique et le premier moteur de translation ; une seconde soupape de commande de translation installée dans un canal entre la seconde pompe hydraulique et le second moteur de translation ; un premier dispositif de manipulation de translation installé dans un canal entre la pompe pilote et la première soupape de commande de translation ; un second dispositif de manipulation de translation installé dans un canal entre la pompe pilote et la seconde soupape de commande de translation ; une soupape de sélection de vitesse de translation installée dans un canal entre la pompe pilote et une unité d'entraînement du premier et du second moteur de translation ; et un contrôleur qui, en cas de translation à grande vitesse résultant d'une commutation par la soupape de sélection de vitesse de translation, compare à une pression spécifique prédéterminée la pression de l'huile de travail dans la première et la seconde pompe hydraulique et, si la pression détectée de l'huile de travail est inférieure ou égale à la pression spécifique prédéterminée, maintient l'entraînement à grande vitesse du premier et du second moteur de translation ou, si la pression de l'huile de travail dans la première et la seconde pompe hydraulique est supérieure ou égale à la pression spécifique, fait passer le premier et le second moteur de translation à un entraînement à vitesse réduite par commutation de la soupape de sélection de vitesse de translation.
PCT/KR2013/012026 2013-12-23 2013-12-23 Dispositif de commande de translation pour engin de chantier et son procédé associé WO2015099207A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/012026 WO2015099207A1 (fr) 2013-12-23 2013-12-23 Dispositif de commande de translation pour engin de chantier et son procédé associé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/012026 WO2015099207A1 (fr) 2013-12-23 2013-12-23 Dispositif de commande de translation pour engin de chantier et son procédé associé

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WO2015099207A1 true WO2015099207A1 (fr) 2015-07-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660479B1 (fr) * 2010-12-27 2017-02-22 Volvo Construction Equipment AB Pompe hydraulique pour engin de chantier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932045A (ja) * 1995-05-17 1997-02-04 Komatsu Ltd 油圧駆動式作業車両の油圧回路
KR0175729B1 (ko) * 1996-02-05 1999-04-01 김정국 크롤러식 굴삭기 주행모터의 속도조절 장치
KR20080105709A (ko) * 2007-06-01 2008-12-04 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 크롤러식 굴삭기의 주행모터 과속 방지장치
KR20120072731A (ko) * 2010-12-24 2012-07-04 두산인프라코어 주식회사 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템
WO2012091182A1 (fr) * 2010-12-27 2012-07-05 볼보 컨스트럭션 이큅먼트 에이비 Pompe hydraulique pour engin de chantier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932045A (ja) * 1995-05-17 1997-02-04 Komatsu Ltd 油圧駆動式作業車両の油圧回路
KR0175729B1 (ko) * 1996-02-05 1999-04-01 김정국 크롤러식 굴삭기 주행모터의 속도조절 장치
KR20080105709A (ko) * 2007-06-01 2008-12-04 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 크롤러식 굴삭기의 주행모터 과속 방지장치
KR20120072731A (ko) * 2010-12-24 2012-07-04 두산인프라코어 주식회사 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템
WO2012091182A1 (fr) * 2010-12-27 2012-07-05 볼보 컨스트럭션 이큅먼트 에이비 Pompe hydraulique pour engin de chantier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660479B1 (fr) * 2010-12-27 2017-02-22 Volvo Construction Equipment AB Pompe hydraulique pour engin de chantier

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