KR101307088B1 - Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment - Google Patents

Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment Download PDF

Info

Publication number
KR101307088B1
KR101307088B1 KR1020090108960A KR20090108960A KR101307088B1 KR 101307088 B1 KR101307088 B1 KR 101307088B1 KR 1020090108960 A KR1020090108960 A KR 1020090108960A KR 20090108960 A KR20090108960 A KR 20090108960A KR 101307088 B1 KR101307088 B1 KR 101307088B1
Authority
KR
South Korea
Prior art keywords
valve
pressure
brake
hydraulic
fan
Prior art date
Application number
KR1020090108960A
Other languages
Korean (ko)
Other versions
KR20110052073A (en
Inventor
윤종현
Original Assignee
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020090108960A priority Critical patent/KR101307088B1/en
Publication of KR20110052073A publication Critical patent/KR20110052073A/en
Application granted granted Critical
Publication of KR101307088B1 publication Critical patent/KR101307088B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4018—Pump units characterised by their drive mechanisms
    • B60T8/4022—Pump units driven by an individual electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

본 발명은 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법에 관한 것으로, 그 목적은 하나의 유압펌프에 의해 브레이크 밸브 및 팬모터로 유량을 분배 공급하여, 최적의 냉각성능 및 브레이크 성능을 유지하고, 동력 손실을 최소화할 수 있는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법을 제공하는 것이다.The present invention relates to a construction equipment fan-brake integrated electric proportional control cut-off valve and a fan-brake hydraulic control method using the same, and an object thereof is to distribute and supply a flow rate to a brake valve and a fan motor by one hydraulic pump, The present invention provides a construction equipment fan-brake integrated electric proportional control cut-off valve and a fan-brake hydraulic control method using the same, which maintain optimal cooling performance and brake performance and minimize power loss.

본 발명은 유압펌프에 의한 유압이 컷-오프밸브로 공급되고, 공급된 유압은 컷오프밸브의 전기비례 유량제어밸브를 통해 브레이크 밸브와 연결된 어큐뮬레이터에 충전된 후, 전기비례 유량제어밸브의 절환에 의해 팬모터와 연결된 방향제어밸브로 공급되도록 구성되어 있다. According to the present invention, the hydraulic pressure by the hydraulic pump is supplied to the cut-off valve, and the supplied hydraulic pressure is charged to the accumulator connected to the brake valve through the electrical proportional flow control valve of the cutoff valve, and then by switching of the electrical proportional flow control valve. It is configured to be supplied to the direction control valve connected to the fan motor.

건설장비, 팬모터, 브레이크밸브, 유압제어, 컷오프밸브 Construction Equipment, Fan Motor, Brake Valve, Hydraulic Control, Cutoff Valve

Description

건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법{Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment}Fan-Brake Integrated Electric Proportional Control Cut-Off Valve and Fan-Brake Hydraulic Control Method Using It {Electric Proportional Control Cut-off Valve of Fan & Brake for Construction Equipment}

본 발명은 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법에 관한 것으로, 하나의 가변용량형 펌프에 의해 유압 브레이크 시스템 및 리모트 팬 쿨링 시스템으로 적정유량을 분배하는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법에 관한 것이다. The present invention relates to a construction equipment fan-brake integrated electric proportional control cut-off valve and a fan-brake hydraulic control method using the same, and distributes an appropriate flow rate to a hydraulic brake system and a remote fan cooling system by one variable displacement pump. Construction equipment fan-brake integrated electric proportional control cut-off valve and a fan-brake hydraulic control method using the same.

기존의 유압 브레이크 시스템(Hydraulic Brake System) 및 리모트 팬 쿨링 시스템(Remote Fan Cooling System)은 2개의 고정 용량형 펌프를 이용하여 각 시스템 별로 1개의 독립적 펌프를 사용하고 있다. 유압 브레이크 시스템(Hydraulic Brake System)은 펌프에서 생성된 유량을 컷-오프밸브를 통하여 적정 압력으로 형성하고, 이를 컷-오프밸브의 어큐뮬레이터(6)에 저장 후 필요시 브레이크 밸브를 작동하여 브레이크 기능을 사용하고 있으며, 리모트 팬 쿨링 시스템(Remote Cooling System)은 펌프에서 생성된 유량으로 팬 모터를 구동하고 속도제어 밸브를 이용하여 팬 모터의 회전 속도를 조절하여 필요한 냉각성능을 생성하도록 되어 있다. The existing hydraulic brake system (Remote Brake System) and Remote Fan Cooling System use two fixed displacement pumps and one independent pump for each system. The hydraulic brake system forms a flow rate generated by the pump at a proper pressure through the cut-off valve, stores it in the accumulator 6 of the cut-off valve, and operates the brake valve if necessary to operate the brake function. In addition, the Remote Fan Cooling System drives the fan motor at the flow rate generated by the pump and adjusts the rotational speed of the fan motor by using a speed control valve to generate the required cooling performance.

상기와 같은 방식은 2개의 독립된 고정 용량형 펌프를 이용함에 따라 유압 브레이크 시스템(Hydraulic Brake System)의 경우 어큐뮬레이터에 유압을 충전시킨 후에도 브레이크 펌프는 계속하여 유량을 생성하고, 리모트 팬 쿨링 시스템(Remote Fan Cooling System)의 경우 팬 펌프에서 생성된 유량의 일부만 모터 구동에 사용하고 그 외의 유량은 유압탱크로 바로 복귀되도록 되어 있어, 각각의 유압 펌프가 시스템에서 요구하는 이상의 유량을 생성함으로서 시스템의 효율이 저하되는 문제점이 있다. In the above method, two independent fixed displacement pumps are used, and in the case of the hydraulic brake system, the brake pump continues to generate a flow rate even after the accumulator is charged with hydraulic pressure, and the remote fan cooling system (Remote Fan) In the case of Cooling System, only part of the flow rate generated by the fan pump is used to drive the motor, and the other flow rate is returned to the hydraulic tank directly. There is a problem.

본 발명은 상기와 같은 문제점을 해소하기 위한 것으로, 그 목적은 하나의 유압펌프에 의해 브레이크 밸브 및 팬모터로 유량을 분배 공급하여, 최적의 냉각성능 및 브레이크 성능을 유지하고, 동력 손실을 최소화할 수 있는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브와 이를 이용한 팬-브레이크 유압제어방법을 제공하는 것이다.The present invention is to solve the above problems, its purpose is to distribute the flow rate to the brake valve and fan motor by a single hydraulic pump, to maintain the optimum cooling performance and brake performance, and to minimize the power loss The present invention provides a construction equipment fan-brake integrated electric proportional control cut-off valve and a fan-brake hydraulic control method using the same.

본 발명은 유압펌프에서 생성된 유압이 어큐뮬레이터에 충전되는 단계; 상기 어큐뮬레이터의 충전압력이 압력센서에 의해 측정되는 단계; 상기 압력센서에 의해 측정된 측정압과 어큐뮬레이터의 설정된 최대충전압이 컨트롤러에서 대비되는 단계; 상기 측정압이 최대충전압이 되면 컨트롤러에서 컷-오프밸브의 전기비례 유량제어밸브 방향을 절환하여 어큐뮬레이터로의 유압공급을 차단하고, 팬모터와 연결된 방향제어밸브로 유압을 공급하는 단계; 상기 방향제어밸브로의 유압공급에 따라 컨트롤러가 쿨러의 온도값과 팬 회전 속도값을 받아 유압펌프 압력제어밸브를 제어하여 팬모터의 회전속도를 확보하는 단계로 이루어져 있다. The present invention comprises the steps of filling the accumulator with the hydraulic pressure generated in the hydraulic pump; Measuring the charging pressure of the accumulator by a pressure sensor; Comparing the measured pressure measured by the pressure sensor with a set maximum charge voltage of the accumulator in the controller; Switching the direction of flow control valve proportional to the cut-off valve in the controller when the measured pressure reaches the maximum charging voltage, and stopping supply of hydraulic pressure to the accumulator and supplying hydraulic pressure to a direction control valve connected to the fan motor; According to the hydraulic pressure supply to the directional control valve, the controller receives the temperature value of the cooler and the fan rotational speed value and controls the hydraulic pump pressure control valve to secure the rotational speed of the fan motor.

상기와 같이 이루어지는 본 발명은 유압펌프에 의한 유압이 컷-오프밸브로 공급되고, 공급된 유압은 컷오프밸브의 전기비례 유량제어밸브를 통해 브레이크 밸브와 연결된 어큐뮬레이터에 충전된 후, 전기비례 유량제어밸브의 절환에 의해 팬모터와 연결된 방향제어밸브로 공급되도록 구성되어 있다. According to the present invention made as described above, the hydraulic pressure by the hydraulic pump is supplied to the cut-off valve, the supplied hydraulic pressure is charged to the accumulator connected to the brake valve through the electrical proportional flow control valve of the cut-off valve, the electrical proportional flow control valve It is configured to be supplied to the direction control valve connected to the fan motor by switching of.

이와 같이 본 발명은 하나의 유압펌프에 의해 공급되는 유압이 컷-오프밸브에 의해 브레이크 밸브 또는 팬모터에 필요유량을 분배 공급하도록 되어 있어, 구성을 단순화하고, 시스템의 효율을 증대시킬 수 있다.As described above, the present invention is configured so that the hydraulic pressure supplied by one hydraulic pump distributes and supplies the required flow rate to the brake valve or the fan motor by the cut-off valve, thereby simplifying the configuration and increasing the efficiency of the system.

또한, 본 발명은 컷-오프밸브에 의해 브레이크 밸브와 연결된 어큐뮬레이터에 유압을 우선 충전하도록 되어 있어, 브레이크 밸브의 안정적 작동이 가능하도록 되어 있다. In addition, according to the present invention, the accumulator connected to the brake valve is first charged by the cut-off valve, so that the brake valve can be stably operated.

또한, 본 발명은 컨트롤러가 유압 펌프의 압력제어 밸브와 컷-오프밸브의 전기비례 유량제어밸브를 제어하여 항상 최적 냉각 성능 및 브레이크 성능을 유지할 뿐만 아니라 각 시스템에서의 동력 손실을 최소화하여 장비의 연비를 향상시키고 각 장비의 특성에 맞는 시스템 제어가 가능한 효과가 있다. In addition, the present invention, the controller controls the pressure control valve of the hydraulic pump and the proportional flow control valve of the cut-off valve to maintain the optimum cooling performance and brake performance at all times as well as to minimize the power loss in each system fuel economy of the equipment It is possible to improve the system and control the system according to the characteristics of each equipment.

본 발명은 유압펌프(10)에서 생성된 유압이 어큐뮬레이터(20)에 충전되는 단계; 상기 어큐뮬레이터(20)의 충전압력이 압력센서(31)에 의해 측정되는 단계; 상기 압력센서(31)에 의해 측정된 측정압과 어큐뮬레이터(20)의 설정된 최대충전압이 컨트롤러(40)에서 대비되는 단계; 상기 측정압이 최대충전압이 되면 컨트롤러(40)에서 컷-오프밸브(30)의 전기비례 유량제어밸브(32) 방향을 절환하여 어큐뮬레이터(20)로의 유압공급을 차단하고, 팬모터(50)와 연결된 방향제어밸브(60)로 유압을 공급하는 단계; 상기 방향제어밸브(60)로의 유압공급에 따라 컨트롤러(40)가 쿨러(70)의 온도값과 팬 회전 속도값을 받아 유압펌프 압력제어밸브(11)를 제어하여 팬 모터(50)의 회전속도를 확보하는 단계로 이루어져 있다. The present invention comprises the steps of filling the accumulator 20 with the hydraulic pressure generated in the hydraulic pump 10; Measuring the filling pressure of the accumulator (20) by a pressure sensor (31); Comparing the measured pressure measured by the pressure sensor 31 with the set maximum charging voltage of the accumulator 20 in the controller 40; When the measured pressure reaches the maximum charging voltage, the controller 40 switches the electric proportional flow control valve 32 direction of the cut-off valve 30 to cut off the hydraulic supply to the accumulator 20, and the fan motor 50. Supplying hydraulic pressure to a direction control valve (60) connected to the air; In response to the hydraulic pressure supply to the directional control valve 60, the controller 40 receives the temperature value and the fan rotation speed value of the cooler 70 and controls the hydraulic pump pressure control valve 11 to control the rotation speed of the fan motor 50. It consists of securing the stage.

상기와 같이 이루어지는 본 발명은 유압펌프(10)에 의한 유압이 컷-오프밸브(30)로 공급되고, 공급된 유압은 컷오프밸브(30)의 전기비례 유량제어밸브(32)를 통해 브레이크 밸브(80)와 연결된 어큐뮬레이터(20)에 충전된 후, 전기비례 유량제어밸브(32)의 절환에 의해 팬모터(50)와 연결된 방향제어밸브(60)로 공급되도록 구 성되어 있다. In the present invention made as described above, the hydraulic pressure by the hydraulic pump 10 is supplied to the cut-off valve 30, and the supplied hydraulic pressure is supplied to the brake valve through the proportional flow control valve 32 of the cutoff valve 30. After being charged in the accumulator 20 connected to the 80, it is configured to be supplied to the direction control valve 60 connected to the fan motor 50 by switching of the proportional flow control valve (32).

즉, 본 발명은 하나의 유압펌프(10)와, 상기 유압펌프(10)와 연결되는 유압펌프 압력제어밸브(11)와, 상기 유압펌프(10)와 연결되어 공급되는 유압을 브레이크 밸브(80)와 연결된 어큘뮬레이터(20) 또는 팬모터(50)와 연결된 방향제어밸브(60)로 공급하는 전기비례 유량제어밸브(32)를 구비하는 컷-오프밸브(30)와, 상기 전기비례 유량제어밸브(32) 및 압력제어밸브(11)를 제어하여 팬모터(50)의 회전속도를 제어하는 컨트롤러(40)를 포함하도록 되어 있다. That is, the present invention is a hydraulic pump 10, the hydraulic pump pressure control valve 11 is connected to the hydraulic pump 10, and the hydraulic pressure connected to the hydraulic pump 10 is supplied to the brake valve (80) Cut-off valve 30 having an electrical proportional flow control valve 32 for supplying to the directional control valve 60 connected to the accumulator 20 or the fan motor 50 connected to) and the electrical proportional flow rate The controller 40 is configured to control the control valve 32 and the pressure control valve 11 to control the rotational speed of the fan motor 50.

상기 유압펌프(10)는 팬모터(50) 및 브레이크 작동을 위한 유압을 공급하는 것으로, 유압펌프 압력제어밸브(11)가 연결설치되어 있다.The hydraulic pump 10 is to supply the hydraulic pressure for the fan motor 50 and the brake operation, the hydraulic pump pressure control valve 11 is installed.

상기 유압펌프 압력제어밸브(11)는 쿨러(70)의 온도값과 팬회전속도값을 받은 컨트롤러(40)에 의해 제어되어 필요로 하는 팬모터(50)의 회전속도를 구현한다. The hydraulic pump pressure control valve 11 is controlled by the controller 40 received the temperature value and the fan rotational speed value of the cooler 70 to implement the rotational speed of the fan motor 50 required.

상기 컷-오프밸브(30)는 압력센서(31)의 측정압에 따른 컨트롤러(40)의 제어에 의해 유압의 공급방향을 절환하는 전기비례 유량제어밸브(32)를 구비하고 있으며, 상기 전기비례 유량제어밸브(32)는 컨트롤러(40)의 제어에 의해 유압펌프(10)로부터 공급되는 유압을 어큐뮬레이터(20)에 충전시키거나 방향제어밸브(60)로 공급하거나, 어큐뮬레이터(20) 및 방향제어밸브(60)로 동시 공급한다. The cut-off valve 30 is provided with an electric proportional flow rate control valve 32 for switching the supply direction of the hydraulic pressure by the control of the controller 40 according to the measured pressure of the pressure sensor 31, the electric proportion The flow rate control valve 32 charges the accumulator 20 with the hydraulic pressure supplied from the hydraulic pump 10 by the control of the controller 40, or supplies the accumulator 20 to the direction control valve 60, or accumulator 20 and direction control. The valve 60 is supplied simultaneously.

상기 컨트롤러(40)는 유압펌프(10), 유압펌프 압력제어밸브(11), 컷-오프밸브(30), 브레이크밸브(80), 쿨러(70), 방향제어밸브(60) 및 팬모터(50)와 연결되어 있으며, 브레이크압, 팬스피드, 쿨러 온도값의 입력에 따라 압력제어밸브(11), 컷-오프밸브(30), 브레이크 밸브(80)를 제어한다. The controller 40 includes a hydraulic pump 10, a hydraulic pump pressure control valve 11, a cut-off valve 30, a brake valve 80, a cooler 70, a direction control valve 60, and a fan motor ( 50), and controls the pressure control valve 11, cut-off valve 30, brake valve 80 in accordance with the input of the brake pressure, fan speed, cooler temperature value.

이때, 미설명부호 90 은 파킹시스템이다.In this case, reference numeral 90 denotes a parking system.

이하 본 발명을 첨부된 도면에 의해 상세히 설명하면 다음과 같다. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1 은 본 발명에 따른 기본 시스템 구성을 보인 예시도를, 도 2 는 본 발명에 따른 전체 유압 회로도를 도시한 것으로, 본 발명에 따른 컨트롤러(40)는 브레이크 압력, 팬의 회전속도 그리고 쿨러의 온도값을 받아 유압펌프의 압력제어 밸브(11) 및 컷-오프밸브(30)의 전기비례 유량제어밸브(32)를 제어하여 브레이크 밸브(80)와 팬모터(50)에 필요 유량을 분배 공급한다. 1 is an exemplary view showing a basic system configuration according to the present invention, Figure 2 is an overall hydraulic circuit diagram according to the present invention, the controller 40 according to the present invention is the brake pressure, the rotational speed of the fan and the cooler In response to the temperature value, the flow rate control valve 32 of the pressure control valve 11 and the cut-off valve 30 of the hydraulic pump is controlled to distribute and supply the required flow rate to the brake valve 80 and the fan motor 50. do.

상기 컷-오프밸브(30)는 구동 장비의 특성에 의하여 유압 브레이크 시스템(Hydraulic Brake System)의 어큐뮬레이터(20)를 충전을 우선시 하도록 되어 있어, 유압펌프(10)에서 생성된 유량은 우선 어큐뮬레이터(20)에 충전되고, 상기 어큐뮬레이터(20)에 충전되는 유압이 압력센서(31)에 의해 측정되며, 압력센서(31)에 측정되는 압력이 설정된 최대충전압력에 도달하게 되면 컨트롤러(40)는 컷-오프밸브의 전기비례 유량제어밸브(32)의 코일에 신호를 보내어 솔레노이드 밸브의 스플을 절환함으로써, 유압 브레이크 시스템(Hydraulic Brake System)으로 가는 유량을 막고, 유압펌프(10)의 유량을 팬모터(50)로 공급하게 된다. The cut-off valve 30 has priority to charge the accumulator 20 of the hydraulic brake system according to the characteristics of the driving equipment, so that the flow rate generated by the hydraulic pump 10 is first accumulator 20. ), The hydraulic pressure charged to the accumulator 20 is measured by the pressure sensor 31, when the pressure measured by the pressure sensor 31 reaches the set maximum charging force, the controller 40 is cut- By sending a signal to the coil of the electric proportional flow control valve 32 of the off-valve to switch the spool of the solenoid valve, it prevents the flow to the hydraulic brake system, and the flow rate of the hydraulic pump 10 is controlled by a fan motor ( 50).

이때, 상기 팬모터(50)의 회전 속도는 컨트롤러(40)가 쿨러의 온도값과 팬 회전속도값을 받아 유압펌프(10)의 압력제어밸브(11)를 제어함으로써, 필요한 팬 모터(50)의 회전 속도가 확보된다.At this time, the rotation speed of the fan motor 50 is controlled by the controller 40 receives the temperature value and the fan rotation speed value of the cooler to control the pressure control valve 11 of the hydraulic pump 10, the necessary fan motor 50 The rotation speed of is secured.

또한, 본 발명은 장비 작동 중 브레이크 밸브(80)를 작동하거나 어큐뮬레이터(20)의 내부 누유로 인하여 압력센서(31)에 측정되는 압력이 어큐뮬레이터(20)의 설정된 최소압력 이하가 되면 컨트롤러(40)는 컷-오프밸브(30)의 전기비례 유량제어밸브(32)의 코일에 신호를 주어 솔레노이드 밸브의 스플을 이동시킨다. 이와 같이 스플이 이동됨에 따라 유압펌프(10) 유량의 일부가 어큐뮬레이터(20)로 공급된다. In addition, the present invention is the controller 40 when the pressure measured by the pressure sensor 31 due to the operation of the brake valve 80 or the internal leakage of the accumulator 20 is less than the set minimum pressure of the accumulator 20 during the operation of the equipment Signals the coil of the proportional flow control valve 32 of the cut-off valve 30 to move the spool of the solenoid valve. As the spool is moved in this way, a part of the flow rate of the hydraulic pump 10 is supplied to the accumulator 20.

이때, 유압펌프의 유량이 유압 브레이크 시스템(Hydraulic Brake System)에 유입될 때 컨트롤러는 팬 모터의 회전 속도값이 일정하게 유지될 수 있도록 컷-오프밸브의 전기비례 유량제어밸브와 유압펌프의 펌프 압력 제어밸브를 제어한다.At this time, when the flow rate of the hydraulic pump flows into the hydraulic brake system, the controller controls the pump pressure of the proportional flow control valve of the cut-off valve and the hydraulic pump so that the rotational speed value of the fan motor is kept constant. Control the control valve.

또한, 어큐뮬레이터의 압력이 최대 충전 압력으로 다시 충전되면 컨트롤러는 다시 컷-오프밸브의 전기 비례 유량제어밸브의 스플을 절환하여 유압 브레이크 시스템(Hydraulic Brake System)으로 가는 유량을 막아 유압펌프의 유량을 팬 모터로 공급하게 된다. In addition, when the accumulator pressure is recharged to the maximum filling pressure, the controller switches the spool of the electric proportional flow control valve of the cut-off valve again to block the flow to the hydraulic brake system, thereby reducing the flow rate of the hydraulic pump. Supply to the motor.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위내에 있게 된다. The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

도 1 은 본 발명에 따른 기본 시스템 구성을 보인 예시도1 is an exemplary view showing a basic system configuration according to the present invention

도 2 는 본 발명에 따른 전체 유압 회로도2 is an overall hydraulic circuit diagram according to the present invention;

* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS

(10) : 유압펌프 (11) : 유압펌프 압력제어밸브(10): hydraulic pump (11): hydraulic pump pressure control valve

(20) : 어큐뮬레이터 (30) : 컷-오프밸브20: accumulator 30: cut-off valve

(31) : 압력센서 (32) : 전기비례 유량제어밸브(31): pressure sensor (32): electric proportional flow control valve

(40) : 컨트롤러 (50) : 팬모터40: controller 50: fan motor

(60) : 방향제어밸브 (70) : 쿨러(60): directional control valve (70): cooler

(80) : 브레이크밸브(80): brake valve

Claims (3)

유압펌프에 의한 유압이 컷-오프밸브로 공급되고, 공급된 유압은 컷오프밸브의 전기비례 유량제어밸브를 통해 브레이크 밸브와 연결된 어큐뮬레이터에 충전된 후, 전기비례 유량제어밸브의 절환에 의해 팬모터와 연결된 방향제어밸브로 공급되도록 구성된 것을 특징으로 하는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브.The hydraulic pressure from the hydraulic pump is supplied to the cut-off valve, and the supplied hydraulic pressure is charged to the accumulator connected to the brake valve through the electrical proportional flow control valve of the cut-off valve, and then, by switching the electrical proportional flow control valve, Construction equipment fan-brake integrated proportional control cut-off valve, characterized in that configured to be supplied to the connected directional control valve. 유압펌프에서 생성된 유압이 어큐뮬레이터에 충전되는 단계; Filling the accumulator with hydraulic pressure generated in the hydraulic pump; 상기 어큐뮬레이터의 충전압력이 압력센서에 의해 측정되는 단계; Measuring the charging pressure of the accumulator by a pressure sensor; 상기 압력센서에 의해 측정된 측정압과 어큐뮬레이터의 설정된 최대충전압이 컨트롤러에서 대비되는 단계; Comparing the measured pressure measured by the pressure sensor with a set maximum charge voltage of the accumulator in the controller; 상기 측정압이 최대충전압이 되면 컨트롤러에서 컷-오프밸브의 전기비례 유량제어밸브 방향을 절환하여 어큐뮬레이터로의 유압공급을 차단하고, 팬모터와 연결된 방향제어밸브로 유압을 공급하는 단계; Switching the direction of flow control valve proportional to the cut-off valve in the controller when the measured pressure reaches the maximum charging voltage, and stopping supply of hydraulic pressure to the accumulator and supplying hydraulic pressure to a direction control valve connected to the fan motor; 상기 방향제어밸브로의 유압공급에 따라 컨트롤러가 쿨러의 온도값과 팬 회전 속도값을 받아 유압펌프 압력제어밸브를 제어하여 팬모터의 회전속도를 확보하는 단계를 포함하는 것을 특징으로 하는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브를 이용한 팬-브레이크 유압제어방법.The controller according to the hydraulic supply to the directional control valve to control the hydraulic pump pressure control valve in response to the temperature value and the fan rotational speed value of the cooler to secure the rotational speed of the fan motor -Brake hydraulic control method using integrated electro-proportional control cut-off valve. 청구항 2 에 있어서;The method according to claim 2; 팬모터와 연결된 방향제어밸브로 유압이 공급된 후, 압력센서에 측정되는 압력이 어큐뮬레이터의 설정된 최소압력 이하가 되면, 유압펌프 유량의 일부가 어큐뮬레이터로 공급되도록 컨트롤러에 의해 컷-오프밸브의 전기비례 유량제어밸브가 제어되는 것을 특징으로 하는 건설장비 팬-브레이크 통합 전기비례 제어 컷-오프 밸브를 이용한 팬-브레이크 유압제어방법.After the hydraulic pressure is supplied to the direction control valve connected to the fan motor, when the pressure measured by the pressure sensor is less than the set minimum pressure of the accumulator, a proportion of the electric pressure of the cut-off valve by the controller is supplied so that a part of the hydraulic pump flow rate is supplied to the accumulator. Construction equipment fan-brake integrated electric proportional control, characterized in that the flow control valve is controlled fan-brake hydraulic control method using a cut-off valve.
KR1020090108960A 2009-11-12 2009-11-12 Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment KR101307088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090108960A KR101307088B1 (en) 2009-11-12 2009-11-12 Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090108960A KR101307088B1 (en) 2009-11-12 2009-11-12 Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment

Publications (2)

Publication Number Publication Date
KR20110052073A KR20110052073A (en) 2011-05-18
KR101307088B1 true KR101307088B1 (en) 2013-09-11

Family

ID=44362249

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090108960A KR101307088B1 (en) 2009-11-12 2009-11-12 Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment

Country Status (1)

Country Link
KR (1) KR101307088B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107672575A (en) * 2017-09-01 2018-02-09 金勇� Electric control braking valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101877567B1 (en) * 2011-12-28 2018-07-12 두산인프라코어 주식회사 Cooling fan-brake controlling method and apparatus for construction machinery

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593103B1 (en) 1999-12-29 2006-06-26 두산인프라코어 주식회사 Brake-Pilot-cooling fan supply valve assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593103B1 (en) 1999-12-29 2006-06-26 두산인프라코어 주식회사 Brake-Pilot-cooling fan supply valve assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107672575A (en) * 2017-09-01 2018-02-09 金勇� Electric control braking valve

Also Published As

Publication number Publication date
KR20110052073A (en) 2011-05-18

Similar Documents

Publication Publication Date Title
US9476437B2 (en) Boom driving device
US7165530B2 (en) Method for controlling a variable-speed engine
KR101568440B1 (en) Controller of hybrid construction machine
CN102808434B (en) Method and system for controlling traveling speed of engineering machinery
CN102906345B (en) Hybrid construction machine
WO2011004881A1 (en) Control device for hybrid construction machine
CN106416050B (en) Method for controlling braking system
WO2013111705A1 (en) Circuit pressure control apparatus, hydraulic pressure control circuit using this circuit pressure control apparatus, and hydraulic pressure control circuit of construction equipment
CN102016185B (en) Control device for hybrid construction machine
US10280866B2 (en) Fluid supply device
WO2016084421A1 (en) Hybrid construction machinery control system
KR101307088B1 (en) Electric Proportional Control Cut-off Valve of Fan ＆ Brake for Construction Equipment
JP2015501733A (en) Cooling system for machine tools
WO2016088573A1 (en) Control system for hybrid construction machine
EP2592189A1 (en) Horsepower control system of a hybrid excavator and control method therefor
US10570585B2 (en) Control device and control method for construction machine
KR20120055416A (en) Hydraulic circuit for hybrid power train of vehicle
US9124133B2 (en) Charging apparatus for construction machine
US10815950B2 (en) Construction machine starting assist system
US20160156298A1 (en) Method and device for operating an asynchronous machine, and an asynchronous machine
JP5545733B2 (en) Control system for hybrid construction machine
KR101583884B1 (en) Line pressure adjusting apparatus for transmission of vehicle
CN109973704A (en) A kind of valve and a kind of valve control system
US20180154738A1 (en) System and method for idle mitigation on a utility truck with an electrically isolated hydraulically controlled aerial work platform
KR20190068353A (en) Engine device for vehicle

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: 20160826

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20170801

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20180829

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20190827

Year of fee payment: 7