KR20120072731A - 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템 - Google Patents
전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템 Download PDFInfo
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- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
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- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- 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
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
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- 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
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
- E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
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- 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
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
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- 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
- E02F9/2282—Systems using center bypass type changeover valves
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- 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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- 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
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- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
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- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- 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
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- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- 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
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- 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
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- 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
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- 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
- F15B2211/265—Control of multiple pressure sources
- F15B2211/2656—Control of multiple pressure sources by control of the pumps
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- 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
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
- F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
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- 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
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
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- 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
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- 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
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
- F15B2211/3127—Floating position connecting the working ports and the return line
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- 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
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
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- 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
- F15B2211/6316—Electronic controllers using input signals representing a pressure the pressure being a pilot pressure
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- 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
- F15B2211/6333—Electronic controllers using input signals representing a state of the pressure source, e.g. swash plate angle
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- 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
- F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
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- 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
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- F15B2211/6658—Control using different modes, e.g. four-quadrant-operation, working mode and transportation mode
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- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
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- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
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- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/875—Control measures for coping with failures
- F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode
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Abstract
Description
도 2는 도 1의 비상 제어부의 일 예를 도시한 로직 회로도;
도 3은 도 1의 유압 시스템에서 비상 제어부 작동시 압력과 유량 사이의 관계를 도시한 그래프;
도 4는 본 발명의 일 실시예에 따른 전자유압펌프를 사용하는 유압 시스템을 도시한 유압 회로도;
도 5는 도 4의 비상 제어부의 일 예를 도시한 로직 회로도;
도 6a 및 도 6b는 작업기의 부하량이 고부하인 경우, 대응하는 유압 시스템의 유압 회로도 및 비상 제어부의 로직 회로도를 도시한 도;
도 7은 도 6a의 유압 시스템에서 압력과 유량 사이의 관계를 도시한 그래프; 그리고
도 8a 및 도 8b는 작업기의 부하량이 저부하인 경우, 대응하는 유압 시스템의 유압 회로도 및 비상 제어부의 로직 회로도를 도시한 도이다.
112a, 112b: 조정기 114a, 114b: 유량 신호
120a, 120b, 120c, 120d: 메인제어밸브 130a, 130b: 주행모터
140a, 140b: 작업기 150: 전자제어부
152a, 152b: 전자유압펌프용 제어 신호
154: 주행직진제어밸브용 제어 신호
160: 비상 제어부
162A, 162B, 162D: 입력 포트
162a, 162b, 162d: 출력 포트
164: 상시 전원 170: 주행직진제어밸브
180: 조작 신호
R1, R2, R3, R4: 저항
SW1, SW2: 스위치
ST_Off: 차단 스위치
Claims (5)
- 압력 제어형 가변 용량 펌프인 제 1 및 제 2 전자유압펌프(110a, 110b)와;
상기 제 1 및 제 2 전자유압펌프(110a, 110b)로부터 토출되는 작동유의 유동을 선택적으로 제어하는 다수의 메인제어밸브(120a, 120b, 120c, 120d)와;
상기 다수의 메인제어밸브 중 대응하는 개개의 메인제어밸브로부터 공급되는 작동유를 통해 구동되는 다수의 작업기(140a, 140b), 제 1 및 제 2 주행펌프(130a, 130b)와;
상기 제 1 및 제 2 주행펌프(130a, 130b)로 공급되는 작동유의 공급 경로를 설정하는 주행직진제어밸브(170)와;
상기 제 1 및 제 2 전자유압펌프의 유량 신호(114a, 114b) 및 조종석 내 조이스틱의 조작 신호(180)에 기초하여 상기 제 1 및 제 2 전자유압펌프(110a, 110b)에 대한 압력 제어 전기 신호(152a, 152b)를 출력함으로써, 제 1 및 제 2 전자유압펌프의 작동유 토출 유량을 제어하는 전자제어부(150); 및
상기 전자제어부(150)의 작동 불능시 상기 제 1 및 제 2 전자유압펌프(110a, 110b)에 대한 사전 설정된 압력 제어 전기 신호를 출력하는 비상 제어부(160)를 포함하고,
상기 비상 제어부(160)는 작업기의 부하량에 따라 상기 제 1 및 제 2 전자유압펌프(110a, 110b)의 토출 유량을 선택적으로 제어하도록 구성되는 것을 특징으로 하는 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템. - 제 1 항에 있어서, 상기 비상 제어부(160)는, 상기 작업기의 부하량이 저부하인 경우 상기 제 1 및 제 2 전자유압펌프(110a, 110b)에 대해 동일한 압력으로 사전 설정된 압력 제어 전기 신호를 출력하고, 상기 작업기의 부하량이 고부하인 경우 상기 제 1 및 제 2 전자유압펌프 중 하나의 펌프(110b)에 대해 상기 저부하의 경우보다 더욱 높은 압력으로 사전 설정된 압력 제어 전기 신호를 출력하도록 구성되는 것을 특징으로 하는 비상 제어부를 포함하는 건설기계의 유압 시스템.
- 제 2 항에 있어서, 상기 비상 제어부(160)는 상기 작업기의 부하량이 고부하인 경우에 또한 상기 주행직진제어밸브(170)에 대한 구동 전기 신호를 출력하여 상기 주행직진제어밸브(170)를 구동시키는 것을 특징으로 하는 비상 제어부를 포함하는 건설기계의 유압 시스템.
- 제 3 항에 있어서, 상기 비상 제어부(160)는:
상기 주행직진제어밸브(170), 제 1 및 제 2 전자유압펌프(110a, 110b)로 전기 신호를 출력하는 개개의 출력 포트(162a, 162b, 162d);
소정의 회로를 통해 상기 개개의 출력 포트와 연결되며, 상기 전자제어부의 대응 전기 신호를 수신하는 개개의 입력 포트(162A, 162B, 162D); 및
상기 소정의 회로 상에 배치된 스위치(SW1, SW2)를 통해 상기 개개의 출력 포트(162a, 162b, 162d)와 연결되며, 상기 전자제어부의 작동 불능시 사전 설정된 전기 신호를 출력하는 상시 전원(164);을 포함하는 전기 회로부로 구성되며,
상기 사전 설정된 전기 신호는 상기 작업기의 부하량에 따라 상기 스위치(SW1, SW2)의 조작을 통해 선택적으로 상기 출력 포트(162a, 162b, 162d)로 공급되는 것을 특징으로 하는 비상 제어부를 포함하는 건설기계의 유압 시스템. - 제 4 항에 있어서, 상기 스위치(SW1, SW2)는 저부하에 대해 상기 제 1 및 제 2 전자유압펌프(110a, 110b)를 동작시키고, 고부하에 대해 상기 주행직진제어밸브(170)의 구동과 함께 상기 제 1 및 제 2 전자유압펌프 중 하나의 펌프(110b)만을 동작시키도록 구성되는 것을 특징으로 하는 비상 제어부를 포함하는 건설기계의 유압 시스템.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100134610A KR101742322B1 (ko) | 2010-12-24 | 2010-12-24 | 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템 |
| EP11851016.3A EP2657539B1 (en) | 2010-12-24 | 2011-12-21 | Hydraulic system for construction machine including emergency control unit for electric hydraulic pump |
| US13/993,961 US9441646B2 (en) | 2010-12-24 | 2011-12-21 | Hydraulic system for construction machine including emergency control unit for electric hydraulic pump |
| PCT/KR2011/009907 WO2012087012A2 (ko) | 2010-12-24 | 2011-12-21 | 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템 |
| CN201180062334.6A CN103282675B (zh) | 2010-12-24 | 2011-12-21 | 包含电动液压泵用紧急控制部的工程机械的液压系统 |
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| KR1020100134610A KR101742322B1 (ko) | 2010-12-24 | 2010-12-24 | 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템 |
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| KR20120072731A true KR20120072731A (ko) | 2012-07-04 |
| KR101742322B1 KR101742322B1 (ko) | 2017-06-01 |
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| US (1) | US9441646B2 (ko) |
| EP (1) | EP2657539B1 (ko) |
| KR (1) | KR101742322B1 (ko) |
| CN (1) | CN103282675B (ko) |
| WO (1) | WO2012087012A2 (ko) |
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| WO2014157946A1 (ko) * | 2013-03-26 | 2014-10-02 | 두산인프라코어 주식회사 | 건설기계의 유압시스템 |
| WO2015099207A1 (ko) * | 2013-12-23 | 2015-07-02 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 주행 제어장치 및 그 제어방법 |
| KR20190085720A (ko) * | 2018-01-11 | 2019-07-19 | 주식회사 두산 | 건설 기계 |
| KR20200108663A (ko) * | 2019-03-11 | 2020-09-21 | 두산인프라코어 주식회사 | 건설 기계 |
| KR20200121843A (ko) * | 2018-03-09 | 2020-10-26 | 두산인프라코어 주식회사 | 건설기계의 비상구동 시스템 |
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| US9003951B2 (en) | 2011-10-05 | 2015-04-14 | Caterpillar Inc. | Hydraulic system with bi-directional regeneration |
| CN105026654A (zh) * | 2013-02-08 | 2015-11-04 | 沃尔沃建造设备有限公司 | 工程机械行驶控制方法 |
| JP6134614B2 (ja) * | 2013-09-02 | 2017-05-24 | 日立建機株式会社 | 作業機械の駆動装置 |
| JP6636795B2 (ja) * | 2015-12-24 | 2020-01-29 | 日立建機株式会社 | 作業機械 |
| JP6736155B2 (ja) * | 2016-06-21 | 2020-08-05 | 株式会社ユーテック | 緊急油圧供給システム及びこれを用いた油圧駆動装置の遠隔制御方法 |
| JP7253933B2 (ja) * | 2019-02-08 | 2023-04-07 | 川崎重工業株式会社 | 油圧駆動システム |
| JP7685883B2 (ja) | 2021-06-18 | 2025-05-30 | 株式会社小松製作所 | 作業機械及び作業機械の制御方法 |
| DE102024203717A1 (de) * | 2024-04-22 | 2025-10-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hydraulikzylinderanordnung und Verfahren zum Betrieb einer Hydraulikzylinderanordnung |
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- 2011-12-21 US US13/993,961 patent/US9441646B2/en not_active Expired - Fee Related
- 2011-12-21 WO PCT/KR2011/009907 patent/WO2012087012A2/ko not_active Ceased
- 2011-12-21 CN CN201180062334.6A patent/CN103282675B/zh not_active Expired - Fee Related
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| WO2014157946A1 (ko) * | 2013-03-26 | 2014-10-02 | 두산인프라코어 주식회사 | 건설기계의 유압시스템 |
| US9618018B2 (en) | 2013-03-26 | 2017-04-11 | Doosan Infracore Co., Ltd. | Hydraulic system for construction equipment |
| WO2015099207A1 (ko) * | 2013-12-23 | 2015-07-02 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 주행 제어장치 및 그 제어방법 |
| KR20190085720A (ko) * | 2018-01-11 | 2019-07-19 | 주식회사 두산 | 건설 기계 |
| KR20200121843A (ko) * | 2018-03-09 | 2020-10-26 | 두산인프라코어 주식회사 | 건설기계의 비상구동 시스템 |
| KR20200108663A (ko) * | 2019-03-11 | 2020-09-21 | 두산인프라코어 주식회사 | 건설 기계 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012087012A3 (ko) | 2012-09-07 |
| US9441646B2 (en) | 2016-09-13 |
| US20130255244A1 (en) | 2013-10-03 |
| EP2657539A4 (en) | 2018-01-03 |
| KR101742322B1 (ko) | 2017-06-01 |
| WO2012087012A2 (ko) | 2012-06-28 |
| CN103282675B (zh) | 2015-09-16 |
| EP2657539A2 (en) | 2013-10-30 |
| CN103282675A (zh) | 2013-09-04 |
| EP2657539B1 (en) | 2020-04-08 |
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