KR20110073898A - Pump control actuation system of construction machinery - Google Patents

Pump control actuation system of construction machinery Download PDF

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Publication number
KR20110073898A
KR20110073898A KR1020090130700A KR20090130700A KR20110073898A KR 20110073898 A KR20110073898 A KR 20110073898A KR 1020090130700 A KR1020090130700 A KR 1020090130700A KR 20090130700 A KR20090130700 A KR 20090130700A KR 20110073898 A KR20110073898 A KR 20110073898A
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South Korea
Prior art keywords
cylinder
pump
valve
oil
head
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KR1020090130700A
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Korean (ko)
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KR101637573B1 (en
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장달식
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두산인프라코어 주식회사
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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • 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
    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

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

Abstract

PURPOSE: A pump control/operation system of construction machinery is provided to increase the operation speed of a cylinder by joining oil flowing from the rod of the cylinder to the oil flowing to the head of the cylinder in a state the oil flows into the head of the cylinder. CONSTITUTION: A pump control/operation system of construction machinery comprises a first switch valve(111), a regeneration line(115) and a second switch valve(121). The first switch valve is installed on a hydraulic line(125). The first switch valve controls the flow of oil. The hydraulic line transfers the oil flowing out of the rod(102) of a cylinder(100) to a pump(105). The regeneration line makes the oil flowing to the first switch valve join another hydraulic line(126) moving the oil to the head of cylinder from the pump. The second switch valve is installed on the regeneration line. The second switch valve controls the flow of the oil.

Description

건설장비의 펌프제어 작동시스템{Pump Control Actuation System of Construction Machinery}Pump Control Actuation System of Construction Machinery

본 발명은 건설장비의 펌프제어 작동시스템에 관한 것으로서, 보다 상세하게는 각각의 액츄에이터의 대응하여 펌프가 구비된 건설장비의 펌프제어 작동시스템에 관한 것이다.The present invention relates to a pump control operating system of construction equipment, and more particularly to a pump control operating system of construction equipment equipped with a corresponding pump of each actuator.

일반적으로, 건설기계는 유압을 사용하여 구동된다. 유압은 엔진에 의해 작동되는 하나 이상의 유압펌프에서 공급된다. 유압펌프는 작동오일을 가압하여 각 액츄에이터에 공급하게 된다. 작동오일은 메인 컨트롤 밸브라는 분배기를 거쳐 각 액츄에이터에 적절하게 분배된다.In general, construction machinery is driven using hydraulic pressure. Hydraulic pressure is supplied from one or more hydraulic pumps operated by the engine. The hydraulic pump pressurizes the working oil and supplies it to each actuator. The working oil is distributed properly to each actuator via a distributor called the main control valve.

엔진의 출력은 펌프, 관로, 밸브, 메인 컨트롤 밸브 등 유압을 구동시키기 위한 유압부품을 작동오일이 거치면서 손실된다. 액츄에이터는 대략 엔진출력의 20% 정도의 효율로 작동된다.The output of the engine is lost as the operating oil passes through hydraulic components for driving hydraulic pressure such as pumps, pipelines, valves and main control valves. Actuators operate at approximately 20% efficiency at engine power.

최근에는, 엔진의 출력에 대한 유압시스템의 효율을 높이기 위해 각 액츄에이터에 대응하여 작동오일을 공급하는 펌프가 구비된 펌프 컨트롤 시스템이 연구되고 있다.Recently, in order to increase the efficiency of the hydraulic system with respect to the output of the engine, a pump control system having a pump for supplying operating oil corresponding to each actuator has been studied.

펌프 컨트롤 시스템은 엔진에 의해 구동되는 펌프가 각 액츄에이터에 직접 ㅇ작동오일을 공급하는 것으로서, 작동오일을 통과하거나 제어하는 유압요소를 줄이어 유압마찰에 의한 손실을 줄이는 시스템이다. 펌프 컨트롤 시스템은 작동오일을 분배하는 메인 컨트롤 밸브의 손실이 제거되어 엔진의 효율이 높다. 또한, 액츄에이터는 펌프에 의한 작동오일의 공급량이 조절됨으로써 출력의 제어가 용이하다.The pump control system is a system in which a pump driven by an engine supplies operating oil directly to each actuator. The pump control system reduces hydraulic friction by reducing hydraulic elements that pass or control operating oil. The pump control system provides high engine efficiency by eliminating losses in the main control valve that distributes the operating oil. In addition, the actuator is easy to control the output by adjusting the supply amount of the operating oil by the pump.

이와 같이 펌프 컨트롤 시스템에 대한 기술에 대한 개요가 알려져 있으나, 구체적인 사항에 대해서는 연구가 이루어지 있다. 예를 들면, 펌프의 작동오일에 의해 구동되는 액츄에이터의 실린더는 작동오일의 입력 및 출력포트에서 압력차이가 발생한다. 실린더의 압력은 실린더의 헤드 및 로드의 형상으로 발생하는데, 실린더의 헤드 측에 작동오일이 공급될 때, 실린더 면적 차이를 이용한 실린더의 속대 증대가 요구되고 있다.As such, an overview of the technology of the pump control system is known, but specific matters have been studied. For example, the cylinder of an actuator driven by the operating oil of the pump produces a pressure difference at the input and output ports of the operating oil. The pressure of the cylinder is generated in the shape of the head and the rod of the cylinder. When the operating oil is supplied to the head of the cylinder, it is required to increase the speed of the cylinder by using the cylinder area difference.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 실린더의 헤드 측으로 작동오일이 입력되는 상태에서 실린더의 로드 측에서 유출되는 작동오일을 이용하여 실린더의 작동속도를 증가시킬 수 있는 건설장비의 펌프제어 작동시스템을 제공하는 것이다.The present invention has been made to solve the above problems of the prior art, the construction that can increase the operating speed of the cylinder by using the operating oil flowing out of the rod side of the cylinder while the operating oil is input to the head of the cylinder It is to provide the pump control operation system of the equipment.

본 발명에 따른 건설장비의 펌프제어 작동시스템은 다수의 펌프와 다수의 액츄에이터가 1:1로 매칭되어 작동되고, 상기 액츄에이터 중 하나 이상은 실린더인 유압시스템으로서, 상기 실린더의 로드 측에서 유출되는 작동오일을 상기 펌프로 이동시키는 유압라인에 설치됨으로써 작동오일의 유동을 단속하는 제1 개폐밸브, 상기 제1 개폐밸브 측으로 유동하는 작동오일을 상기 펌프에서 상기 실린더의 헤드 측으로 작동오일을 유동시키는 유압라인에 합류시키는 재생라인, 및 상기 재생라인에 설치되어 상기 작동오일의 유동을 단속하는 제2 개폐밸브를 포함한다.The pump control operation system of construction equipment according to the present invention is operated by matching a plurality of pumps and a plurality of actuators 1: 1, and at least one of the actuators is a hydraulic system that is a cylinder, the operation flowing out of the rod side of the cylinder A hydraulic on-line valve is installed in the hydraulic line for moving the oil to the pump to control the flow of the operating oil, and the hydraulic line to flow the operating oil from the pump to the head of the cylinder from the operating oil flowing to the first on-off valve side. And a second on / off valve installed in the regeneration line to control the flow of the operating oil.

한편, 상기 제1 개폐밸브 및 제2 개폐밸브는 전기적으로 개폐가능한 포펫밸브가 선택될 수 있다.On the other hand, the first on-off valve and the second on-off valve may be selected an electrically openable poppet valve.

상기와 같은 본 발명에 따른 건설장비의 펌프제어 작동시스템은 실린더의 헤드 측으로 작동오일이 입력되는 상태에서 실린더의 로드 측에서 유출되는 작동오일을 재차 실린더의 헤드 측으로 유동되는 작동오일에 합류시킴으로써 실린더의 작동 속도를 증가시킬 수 있다.In the pump control operation system of the construction equipment according to the present invention as described above, the operating oil flowing out of the rod side of the cylinder in the state in which the operating oil is input to the head of the cylinder by joining the operating oil flows to the head of the cylinder again. It can increase the operating speed.

여기서, 실린더의 로드 측에서 유출되는 작동오일은 작동오일을 펌프 측으로 재순환시키는 제1 개폐밸브가 닫히고, 실린더의 헤드 측으로 입력하는 제2 개폐밸브가 전기적으로 개방됨으로써 구조적으로 간단하게 실린더의 헤드 측으로 유동하여 실린더 헤드의 작동속도를 높일 수 있다. 제1 개폐밸브 및 제2 개폐밸브는 전기적으로 작동이 가능한 포펫 형태로서 제어성이 우수하고, 작동오일의 통과 시에 압력손실을 줄일 수 있다.Here, the operating oil flowing out of the rod side of the cylinder flows to the head of the cylinder simply structurally by closing the first on-off valve for recirculating the operating oil to the pump side, and the second on-off valve for input to the head of the cylinder is electrically opened. Can increase the working speed of the cylinder head. The first on-off valve and the second on-off valve are in the form of an electrically operable poppet, and have excellent controllability, and can reduce pressure loss when passing the operating oil.

이하, 본 발명에 따른 건설장비의 펌프제어 작동시스템의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.Hereinafter, a preferred embodiment of a pump control operation system of construction equipment according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

도 1은 본 발명의 일 실시예에 따른 건설장비의 펌프제어 작동시스템의 구성도이다.1 is a block diagram of a pump control operation system of construction equipment according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 건설장비의 펌프제어 작동시스템은 다수의 펌프(105)와 다수의 액츄에이터가 1:1로 매칭되어 작동되고, 액츄에이터 중 하나 이상은 실린더(100)인 유압시스템으로서, 실린더(100)의 헤드(101)와 로드(102) 측의 면적차이로 발생하는 작동오일의 압력을 이용하여 실린더(100)의 작동속도를 증가시킬 수 있는 유압회로를 포함한다. 상기 유압회로는 제1 개폐밸 브(111), 재생라인(115) 및 제2 개폐밸브(121)를 포함한다.Referring to Figure 1, the pump control operating system of construction equipment according to an embodiment of the present invention is a plurality of pumps 105 and a plurality of actuators are operated in a 1: 1 match, one or more of the actuator cylinder 100 A hydraulic system comprising a hydraulic circuit capable of increasing the operating speed of the cylinder 100 by using the pressure of the operating oil generated by the area difference between the head 101 and the rod 102 side of the cylinder 100. do. The hydraulic circuit includes a first open / close valve 111, a regeneration line 115, and a second open / close valve 121.

제1 개폐밸브(111)는 실린더(100)의 로드(102) 측에서 유출되는 작동오일을 펌프(105)로 이동시키는 유압라인(125)에 설치되며, 그 유압라인(125)에서 작동오일의 유동을 단속하는 기능을 수행한다. 재생라인(115)은 제1 개폐밸브(111) 측으로 유동하는 작동오일을 펌프(105)에서 실린더(100)의 헤드(101) 측으로 작동오일을 유동시키는 유압라인(126)에 합류시키는 관로이다. 제2 개폐밸브(121)는 재생라인(115)에 설치되어 작동오일의 유동을 단속하는 기능을 수행한다. 제1 개폐밸브(111) 및 제2 개폐밸브(121)는 전기적으로 개폐가능한 포펫밸브가 사용될 수 있다. 포펫밸브 방식은 작동오일은 압력손실을 줄이고, 전기신호에 의한 작동이 간단하여 제어성이 우수하다.The first opening / closing valve 111 is installed in the hydraulic line 125 for moving the operating oil flowing out of the rod 102 side of the cylinder 100 to the pump 105, and the operating oil in the hydraulic line 125. It performs the function of controlling the flow. The regeneration line 115 is a conduit for joining the working oil flowing to the first on-off valve 111 side to the hydraulic line 126 for flowing the working oil from the pump 105 to the head 101 side of the cylinder 100. The second on-off valve 121 is installed in the regeneration line 115 to perform a function to control the flow of the operating oil. The first on-off valve 111 and the second on-off valve 121 may be an electrically openable poppet valve. The poppet valve method has excellent controllability because operating oil reduces pressure loss and simple operation by electric signal.

펌프(105)가 가동하여 실린더(100)의 헤드(101) 측으로 작동오일이 입력되면, 작동오일은 헤드(101)를 가압하고, 헤드(101)는 상방으로 이동된다. 실린더(100)의 로드(102) 측에 있는 작동오일은 유출되고, 제1 개폐밸브(111) 및 제2 개폐밸브(121) 측으로 유동된다. 제1 개폐밸브(111)는 닫힌 상태로 작동되며, 제2 개폐밸브(121)는 열린 상태로 작동된다. 작동오일은 제2 개폐밸브(121)를 지나 재생라인(115)을 통해 실린더(100)의 헤드(101) 측으로 유동되어 실린더(100)의 헤드(101) 측으로 입력되는 유량을 증가시며, 실린더(100)의 작동속도를 증가시킨다.When the pump 105 is operated to input the working oil to the head 101 side of the cylinder 100, the working oil pressurizes the head 101, and the head 101 is moved upward. The operating oil on the rod 102 side of the cylinder 100 flows out and flows to the first opening / closing valve 111 and the second opening / closing valve 121. The first on-off valve 111 is operated in a closed state, and the second on-off valve 121 is operated in an open state. The operating oil flows to the head 101 side of the cylinder 100 through the regeneration line 115 through the second opening / closing valve 121 to increase the flow rate input to the head 101 side of the cylinder 100, and the cylinder ( Increase the operating speed of 100).

한편, 펌프(105)는 실린더(100)의 헤드(101) 및 로드(102) 양측에서 선택적으로 작동오일을 공급할 수 있는 양 방향 펌프(105)이며, 펌프(105)의 좌측에는 펌프(105)에 작동오일을 공급하는 차징펌프(130)가 역류를 방지하는 체크밸브(135)와 역류를 방지하는 감압밸브(137)와 함께 연결되어 있다.On the other hand, the pump 105 is a bidirectional pump 105 that can selectively supply the operating oil from both the head 101 and the rod 102 of the cylinder 100, the pump 105 on the left side of the pump 105 The charging pump 130 for supplying the operating oil is connected to the check valve 135 to prevent the reverse flow and the pressure reducing valve 137 to prevent the reverse flow.

상기와 같이 실린더(100)의 작동속도를 증가시키기 위한 제1 개폐밸브(111), 제2 개폐밸브(121) 및 재생라인(115)은 건설기계의 유압시스템에서 실린더(100)를 액츄에이터로 사용하는 작업기에 적용될 수 있다.As described above, the first on-off valve 111, the second on-off valve 121, and the regeneration line 115 to increase the operating speed of the cylinder 100 use the cylinder 100 as an actuator in a hydraulic system of a construction machine. Can be applied to the working machine.

도 1은 본 발명의 일 실시예에 따른 건설장비의 펌프제어 작동시스템의 구성도이다.1 is a block diagram of a pump control operation system of construction equipment according to an embodiment of the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

100: 실린더 105: 펌프100: cylinder 105: pump

111: 제1 개폐밸브 115: 재생라인111: first opening and closing valve 115: regeneration line

121: 제2 개폐밸브 125: 유압라인121: second opening and closing valve 125: hydraulic line

130: 차징펌프 135: 체크밸브130: charging pump 135: check valve

137: 감압밸브137: pressure reducing valve

Claims (2)

다수의 펌프(105)와 다수의 액츄에이터가 1:1로 매칭되어 작동되고, 상기 액츄에이터 중 하나 이상은 실린더(100)인 유압시스템으로서,A hydraulic system in which a plurality of pumps 105 and a plurality of actuators are operated in a 1: 1 match, and at least one of the actuators is a cylinder 100, 상기 실린더(100)의 로드(102) 측에서 유출되는 작동오일을 상기 펌프(105)로 이동시키는 유압라인(125)에 설치됨으로써 작동오일의 유동을 단속하는 제1 개폐밸브(111);A first opening / closing valve (111) for controlling the flow of the operating oil by being installed in the hydraulic line (125) for moving the operating oil flowing out of the rod (102) side of the cylinder (100) to the pump (105); 상기 제1 개폐밸브(111) 측으로 유동하는 작동오일을 상기 펌프(105)에서 상기 실린더(100)의 헤드(101) 측으로 작동오일을 유동시키는 유압라인(126)에 합류시키는 재생라인(115); 및A regeneration line 115 for joining the operation oil flowing toward the first on / off valve 111 to the hydraulic line 126 for flowing the operation oil from the pump 105 to the head 101 of the cylinder 100; And 상기 재생라인(115)에 설치되어 상기 작동오일의 유동을 단속하는 제2 개폐밸브(121)를 포함하는 건설장비의 펌프제어 작동시스템.Pump control operation system of the construction equipment including a second opening and closing valve 121 is installed in the regeneration line 115 to control the flow of the operating oil. 제 1 항에 있어서,The method of claim 1, 상기 제1 개폐밸브(111) 및 제2 개폐밸브(121)는 전기적으로 개폐가능한 포펫밸브인 것을 특징으로 하는 건설장비의 펌프제어 작동시스템.The first on-off valve 111 and the second on-off valve 121 is a pump control operating system of the construction equipment, characterized in that the electrically openable poppet valve.
KR1020090130700A 2009-12-24 2009-12-24 Pump Control Actuation System of Construction Machinery KR101637573B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111094665A (en) * 2017-09-15 2020-05-01 川崎重工业株式会社 Hydraulic drive system for construction machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11230107A (en) * 1998-02-09 1999-08-27 Shin Caterpillar Mitsubishi Ltd Regenerative circuit
KR100256775B1 (en) * 1995-08-31 2000-05-15 토니헬샴 A controlling apparatus and method of hydraulic type construction mechanics
KR20010071622A (en) * 1998-06-27 2001-07-28 라르스 브룬 Mobile working machine
JP2002106503A (en) * 2000-10-04 2002-04-10 Shin Caterpillar Mitsubishi Ltd Hydraulic circuit for working machinery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256775B1 (en) * 1995-08-31 2000-05-15 토니헬샴 A controlling apparatus and method of hydraulic type construction mechanics
JPH11230107A (en) * 1998-02-09 1999-08-27 Shin Caterpillar Mitsubishi Ltd Regenerative circuit
KR20010071622A (en) * 1998-06-27 2001-07-28 라르스 브룬 Mobile working machine
JP2002106503A (en) * 2000-10-04 2002-04-10 Shin Caterpillar Mitsubishi Ltd Hydraulic circuit for working machinery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111094665A (en) * 2017-09-15 2020-05-01 川崎重工业株式会社 Hydraulic drive system for construction machine

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