KR950019251A - 건설 기계의 유압 제어 장치 - Google Patents

건설 기계의 유압 제어 장치 Download PDF

Info

Publication number
KR950019251A
KR950019251A KR1019940032414A KR19940032414A KR950019251A KR 950019251 A KR950019251 A KR 950019251A KR 1019940032414 A KR1019940032414 A KR 1019940032414A KR 19940032414 A KR19940032414 A KR 19940032414A KR 950019251 A KR950019251 A KR 950019251A
Authority
KR
South Korea
Prior art keywords
pressure
hydraulic
predetermined value
hydraulic actuator
prime mover
Prior art date
Application number
KR1019940032414A
Other languages
English (en)
Other versions
KR0144087B1 (ko
Inventor
쯔가사 도요오까
도오이찌 히라따
겐로꾸 스기야마
아끼라 다쯔미
Original Assignee
오까다 하지메
히다찌 겐끼 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
Application filed by 오까다 하지메, 히다찌 겐끼 가부시끼가이샤 filed Critical 오까다 하지메
Publication of KR950019251A publication Critical patent/KR950019251A/ko
Application granted granted Critical
Publication of KR0144087B1 publication Critical patent/KR0144087B1/ko

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • 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
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • 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
    • 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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F15B2011/0243—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits the regenerative circuit being activated or deactivated automatically
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/67—Methods for controlling pilot pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member

Abstract

압력 검출 라인(48)에서 검출된 펌프 압력이 제1 소정치 Pd1보다 커지면 재생 절환 밸브(44)는 밸브 개방 위치로 이동되고, 재생이 해제된다. 이 때 압력 검출 라인(51)에서 검출된 펌프 토출 압력은 제1 소정치 Pd1 부근의 제2 소정치 Pd1*보다 커지며, 회전수 증가 장치(52)는 원동기(10)의 회전수가 증가하도록 원동기 제어 장치(11)을 제어하고, 펌프 토출 유량을 증가시킨다. 이로써 재생을 해제한 경우에도 액튜에이터의 속도 변화를 작게 하고, 조작성을 악화시키지 않고 작업량을 증가시킨다.

Description

건설 기계의 유압 제어 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1 실시예에 따른 건설 기계의 유압 제어 장치의 개략도.

Claims (12)

  1. 원동기와, 상기 원동기의 회전수를 제어하는 원동기 제어 수단과, 상기 원동기에 의해 구동되는 유압 펌프와, 상기 유압 펌프로부터 토출되는 유압에 의해 구동되는 유압 액튜에이터와, 상기 유압 펌프로부터 상기 유압 액튜에이터로 공급되는 유압의 흐름을 제어하는 방향 절환 밸브와, 상기 유압 액튜에이터에 공급되는 유압의 압력이 제1 소정치보다 작을 때 상기 유압 액튜에이터로부터의 복귀 오일을 상기 유압 액튜에이터의 공급측으로 재생하는 재생 수단을 구비한 건설 기계의 유압 제어 장치에 있어서, 상기 유압 액튜에이터에 공급되는 유압의 압력을 검출하는 수단과, 상기 검출된 압력이 상기 제1 소정치 부근의 제2 소정치보다 클 때 상기 원동기의 회전수가 증가하도록 상기 원동기 제어 수단을 제어하는 회전수 증가 수단을 구비한 것을 특징으로 하는 유압 제어 장치.
  2. 제1항에 있어서, 상기 검출 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력을 상기 회전수 증가 수단으로 유도하는 압력 검출 관로이며, 상기 회전수 증가 수단은 상기 압력 검출 관로에 의해 유도된 유압유의 압력에 의해 작동하고, 상기 원동기 제어 수단을 제어하는 유압 액튜에이터를 갖는 것을 특징으로 하는 유압 제어 장치.
  3. 제1항에 있어서, 상기 검출 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력을 상기 회전수 증가 수단으로 유도하는 압력 검출 관로이며, 상기 원동기 제어 수단은 조속기 레버를 구비한 연료 분사 장치를 갖고, 상기 회전수 증가 수단은 상기 압력 검출 관로에 접속되고 상기 유압 액튜에이터에 공급되는 유압유의 압력이 유도되어 그 유압유에 의해 작동하는 유압 액튜에이터와, 이 유압 액튜에이터의 작동에 의해 상기 조속기 레버를 회전수 증가 방향으로 움직이는 레버 수단과, 상기 압력이 상기 제2 소정치에 달할 때까지는 상기 유압 액튜에이터의 작동을 저지하는 유지 수단을 더 구비한 것을 특징으로 하는 유압 제어 장치.
  4. 제1항에 있어서, 상기 검출 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력을 전기 신호로 변환하는 압력 검출기이며, 상기 회전수 증가 수단은 상기 압력 검출기에 의해 검출된 압력을 기초로 하여 상기 원동기 제어 수단을 제어하는 연산 수단을 구비한 것을 특징으로 하는 유압 제어 장치.
  5. 제1항에 있어서, 상기 검출 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력을 전기 신호로 변환하는 압력 검출기이며, 상기 회전수 증가 수단은 제어 레버의 조작량에 따른 제1 구동 신호를 연산하는 제1 연산 수단과, 상기 제1 구동 신호에 따라 원동기의 회전수를 제어하는 연료 분사 장치를 갖고, 상기 회전수 증가 수단은 상기 압력 검출기에 의해 검출된 압력이 상기 제2 소정치보다 커지면 상기 제1 구동 신호보다 큰 제2 구동 신호를 연산하고, 이를 상기 제1 구동 신호 대신에 출력하는 제2 연산 수단을 갖는 것을 특징으로 하는 유압 제어 장치.
  6. 제5항에 있어서, 상기 제2 연산 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력이 상기 제2 소정치보다 커지면 구동 신호 증분치를 연산하는 수단과, 상기 구동 신호 증분치를 상기 제1 구동 신호에 가산하고, 상기 제2 구동 신호를 구하는 수단을 갖는 것을 특징으로 하는 유압 제어 장치.
  7. 제1항에 있어서, 상기 재생 수단은 상기 제1 소정치를 임의로 조정 가능하게 하는 수동 조작 수단을 갖는 것을 특징으로 하는 유압 제어 장치.
  8. 제1항에 있어서, 상기 재생 수단은 상기 유압 액튜에이터로부터의 복귀 오일이 통하는 유압 라인에 배치된 재생 절환 밸브를 포함하는 재생 회로와, 상기 유압 액튜에이터로 공급되는 유압유의 압력이 제1 소정치보다 작을 때 상기 재생 절환 밸브를 재생 위치로 움직이는 가압 수단과, 상기 가압 수단에 파일럿 압력을 출력하는 압력 발생 수단을 갖고, 상기 압력 발생 수단은 상기 파일럿 압력을 조정하고 상기 제1 소정치를 조정하는 수동 조작 수단을 구비하고 있는 것을 특징으로 하는 유압 제어 장치.
  9. 제1항에 있어서, 상기 회전수 증가 수단은 상기 제2 소정치를 임의로 조정 가능하게 하는 수동 조작 수단을 갖는 것을 특징으로 하는 유압 제어 장치.
  10. 제1항에 있어서, 상기 검출 수단은 상기 유압 액튜에이터에 공급되는 유압유의 압력을 전기 신호로 변환하는 압력 검출기이며, 상기 회전수 증가 수단은 상기 압력 검출기에 의해 검출된 압력을 기초로 하여 상기 원동기 제어 수단을 제어하는 연산 수단과, 상기 연산 수단에 작용하여 상기 제2 소정치를 조정하는 수동 조작 수단을 갖는 것을 특징으로 하는 유압 제어 장치.
  11. 제1항에 있어서, 상기 제2 소정치는 상기 제1 소정치와 거의 같은 것을 특징으로 하는 유압 제어 장치.
  12. 제1항에 있어서, 상기 제2 소정치는 상기 제1 소정치보다 약간 작은 것을 특징으로 하는 유압 제어 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940032414A 1993-12-02 1994-12-01 건설기계의 유압제어장치 KR0144087B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5303019A JP2992434B2 (ja) 1993-12-02 1993-12-02 建設機械の油圧制御装置
JP93-303019 1993-12-02

Publications (2)

Publication Number Publication Date
KR950019251A true KR950019251A (ko) 1995-07-22
KR0144087B1 KR0144087B1 (ko) 1998-08-01

Family

ID=17915964

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940032414A KR0144087B1 (ko) 1993-12-02 1994-12-01 건설기계의 유압제어장치

Country Status (6)

Country Link
US (1) US5479778A (ko)
EP (1) EP0656481B1 (ko)
JP (1) JP2992434B2 (ko)
KR (1) KR0144087B1 (ko)
CN (1) CN1056662C (ko)
DE (1) DE69400294T2 (ko)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608758A1 (de) * 1996-03-07 1997-09-11 Rexroth Mannesmann Gmbh Hydraulische Ventilanordnung
JPH10152865A (ja) * 1996-11-22 1998-06-09 Yutani Heavy Ind Ltd バッテリ駆動の作業機械
US7255539B1 (en) * 2002-05-09 2007-08-14 Clarke Fire Protection Products Pump pressure limiting engine speed control
JP4173121B2 (ja) * 2003-09-02 2008-10-29 株式会社小松製作所 建設機械の運転システム
JP5013452B2 (ja) * 2007-03-06 2012-08-29 キャタピラー エス エー アール エル 建設機械における油圧制御回路
SE531754C2 (sv) 2007-05-11 2009-07-28 Nordhydraulic Ab Hydraulisk lastkontrollventilanordning
JP4953378B2 (ja) * 2007-10-19 2012-06-13 キャタピラー エス エー アール エル 建設機械における油圧制御システム
US20090129935A1 (en) * 2007-11-21 2009-05-21 Kunkler Kevin J Pump suction pressure limiting speed control and related pump driver and sprinkler system
US7665971B1 (en) * 2008-01-15 2010-02-23 Mi-Jack Products, Inc. Method of obtaining required power on demand from an engine
US7702449B2 (en) * 2008-08-01 2010-04-20 International Engine Intellectual Property Company, Llc High pressure oil limit based on fuel level to protect fuel injectors
JP5079827B2 (ja) * 2010-02-10 2012-11-21 日立建機株式会社 油圧ショベルの油圧駆動装置
WO2012170394A1 (en) 2011-06-09 2012-12-13 Clarke Fire Protection Products, Inc. Cooling arrangements for fire suppression sprinkler system fire pumps
CN102506030B (zh) * 2011-09-26 2014-11-19 三一重型装备有限公司 一种多路阀及掘进机
CN102704528A (zh) * 2012-06-26 2012-10-03 上海三一重机有限公司 一种挖掘机液压系统及控制方法及挖掘机
EP2811172B1 (en) * 2013-06-04 2019-02-27 Danfoss Power Solutions Aps A hydraulic valve arrangement
US10072678B2 (en) * 2014-06-23 2018-09-11 Husco International, Inc. Regeneration deactivation valve and method
CN104533865B (zh) * 2015-01-08 2017-04-05 中国人民解放军国防科学技术大学 一种液压节能控制器
CN110382784B (zh) * 2017-12-26 2022-03-11 日立建机株式会社 作业机械
JP6914206B2 (ja) * 2018-01-11 2021-08-04 株式会社小松製作所 油圧回路
CN108978768A (zh) * 2018-06-29 2018-12-11 广西柳工机械股份有限公司 铲斗插入物料的自动识别方法及装载机自动铲装控制方法
JP7269436B2 (ja) * 2020-03-30 2023-05-08 日立建機株式会社 作業機械
AT524160B1 (de) * 2020-08-19 2022-06-15 Engel Austria Gmbh Hydraulische Antriebsvorrichtung für eine Formgebungsmaschine
CN113123400B (zh) * 2021-04-22 2022-08-05 潍柴动力股份有限公司 挖掘机多路阀阀芯复位异常诊断方法、挖掘机及控制方法
GB202117533D0 (en) * 2021-12-03 2022-01-19 Agco Int Gmbh Mobile machine and method
WO2023145182A1 (ja) * 2022-01-25 2023-08-03 日立建機株式会社 作業機械

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864994A (en) * 1981-11-16 1989-09-12 Sundstrand Corporation Engine override controls
US4610193A (en) * 1983-10-26 1986-09-09 Deere & Company Load control system
DE3400885A1 (de) * 1984-01-12 1985-07-25 Robert Bosch Gmbh, 7000 Stuttgart Hydrostatischer antrieb
DK154169C (da) * 1984-10-03 1989-03-20 Danfoss As Styreindretning for en hydraulisk drevet forbruger
IT1195178B (it) * 1986-09-24 1988-10-12 Chs Vickers Spa Sistema di recupero di portata per circuiti idraulici con pompe e di stributori compensati in pressione per organi di lavoro di macchine movimento terra
US4942737A (en) * 1986-10-05 1990-07-24 Hitachi Construction Machinery Co., Ltd. Drive control system for hydraulic construction machine
GB2227295B (en) * 1989-01-03 1993-01-13 Michael David Baxter Hydraulic directional control valve with regenerative flow check valve
JP2839625B2 (ja) * 1990-03-05 1998-12-16 日立建機株式会社 油圧駆動装置
JP2949795B2 (ja) * 1990-06-28 1999-09-20 スズキ株式会社 四輪操舵装置
LU87794A1 (fr) * 1990-08-31 1991-02-18 Hydrolux Sarl Proportional-wegeventil in sitzbauweise
JPH03117704A (ja) * 1990-09-10 1991-05-20 Yutani Heavy Ind Ltd 油圧シリンダの再生合流方法
JP3065108B2 (ja) * 1990-12-18 2000-07-12 帝人製機株式会社 カウンターバランス弁
DE4105459A1 (de) * 1991-02-21 1992-08-27 Heilmeier & Weinlein Hydraulische steuervorrichtung
US5226348A (en) * 1992-12-14 1993-07-13 Caterpillar Inc. Electro-hydraulic quick drop circuit

Also Published As

Publication number Publication date
DE69400294D1 (de) 1996-08-14
DE69400294T2 (de) 1996-11-28
JPH07158604A (ja) 1995-06-20
US5479778A (en) 1996-01-02
EP0656481A1 (en) 1995-06-07
CN1108334A (zh) 1995-09-13
EP0656481B1 (en) 1996-07-10
CN1056662C (zh) 2000-09-20
KR0144087B1 (ko) 1998-08-01
JP2992434B2 (ja) 1999-12-20

Similar Documents

Publication Publication Date Title
KR950019251A (ko) 건설 기계의 유압 제어 장치
US5469646A (en) Fine operation mode changeover device for hydraulic excavator
KR970059411A (ko) 건설기계의 유압구동장치
KR930700738A (ko) 유압건설 기계의 유압 제어 장치
KR950703701A (ko) 작업기계의 유압장치(hydraulic device for working machine)
KR970043644A (ko) 유압셔블의 유압회로
KR900702149A (ko) 건설기계의 제어장치
KR20090103082A (ko) 중장비의 주행시스템
EP0558765A4 (en) Hydraulic oil amount change-over controlling device for hydraulic excavator
KR970065908A (ko) 건설기계의 간섭방지장치
EP1544440B8 (en) Prime mover controller of a construction machine.
KR910700414A (ko) 작업기계의 유압회로장치
KR920704015A (ko) 가변 용량 펌프의 용량 제어회로장치
JP2007298130A (ja) 建設機械の油圧装置
KR100656070B1 (ko) 휠로더의 유압펌프 제어장치
JP2005061298A (ja) 建設機械
KR970021548A (ko) 유압식 기계장치의 주행 제어장치 및 제어방법
KR100240090B1 (ko) 유압식 건설기계의 엔진 출력 제어장치 및 그 제어방법
JP6567301B2 (ja) ショベル
KR950003940A (ko) 유압작동기의 방향 및 속도 제어장치
KR970001763A (ko) 건설기계 주행시스템의 제어장치
KR920012681A (ko) 유압굴삭기의 자동 작동실행장치
KR960029558A (ko) 중장비의 출력제어장치
KR200244736Y1 (ko) 유압식 구동차량의 펌프 및 엔진회전수 제어장치
KR100188884B1 (ko) 유압식 건설기계의 엔진회전수 제어장치

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20100413

Year of fee payment: 13

LAPS Lapse due to unpaid annual fee