KR20000026986A - Regenerated brake system with hydraulic energy - Google Patents

Regenerated brake system with hydraulic energy Download PDF

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Publication number
KR20000026986A
KR20000026986A KR1019980044767A KR19980044767A KR20000026986A KR 20000026986 A KR20000026986 A KR 20000026986A KR 1019980044767 A KR1019980044767 A KR 1019980044767A KR 19980044767 A KR19980044767 A KR 19980044767A KR 20000026986 A KR20000026986 A KR 20000026986A
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KR
South Korea
Prior art keywords
hydraulic
fluid
accumulator
control valve
hydraulic motor
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Application number
KR1019980044767A
Other languages
Korean (ko)
Inventor
김성동
이재구
Original Assignee
김성동
이재구
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Priority to KR1019980044767A priority Critical patent/KR20000026986A/en
Publication of KR20000026986A publication Critical patent/KR20000026986A/en

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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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • 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
    • F15B13/027—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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • 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

Abstract

PURPOSE: A regenerated brake system is provided to maximize the hydraulic energy efficiency and to save energy by improving a control valve for hydraulic direction as well as by adding an accumulator to a hydraulic line required to work the oil pressure. CONSTITUTION: A hydraulic pump(34) worked through a power source(33) such as an engine exhausts a fluid introduced into itself. The exhausted fluid is introduced into a direction control valve(37) along a hydraulic pipe(36). Then, the fluid is transferred to a hydraulic motor(39) by communicating a feed pipe(38) with an inlet port(40) if the fluid is doing the right direction movement. The fluid is exhausted to a fluid tank(35) with an outlet port(44) and an exhaust pipe(46) after revolving the main axis of the hydraulic motor. However, the fluid of high pressure is remained in the hydraulic pipe if the fluid is stopped feeding from the hydraulic pump to stop the main axis of the revolving hydraulic motor. The remained fluid is stored in an accumulator(42) through a check valve(41) and isolated by an outlet port(43) for the accumulator. The acceleration of the hydraulic motor and the energy efficiency of the hydraulic circuit are improved by doubling the kinetic energy to the remained fluid.

Description

유압에너지 재생브레이크시스템Hydraulic energy brake system

본 발명은 유압에너지 재생브레이크시스템에 관한 것으로서 더욱 상세하게는 유압작동에 필요한 유압라인에 축압기(accumulator)의 추가와 유압방향제어밸브를개선하여 유압에너지효율의 극대화와 이로인한 에너지절약을 이루기 위함이다.The present invention relates to a hydraulic energy regeneration brake system, and more particularly, to maximize the hydraulic energy efficiency and thereby energy saving by adding an accumulator to the hydraulic line required for hydraulic operation and improving the hydraulic direction control valve. to be.

일반적으로 유압작동기구는 유압펌프 혹은 유압모터를 이용하여 특정한 유체를 고압으로 압축하여 실린더내로 유입시켜 피스톤과 같은 액츄에이터(actuator)를 작동시키는 것으로, 굴삭기를 비롯한 유압프레스등과 같은 산업현장의 공작기계에 적용된다.In general, the hydraulic actuating mechanism is a hydraulic pump or a hydraulic motor to compress a specific fluid to a high pressure to flow into the cylinder to operate an actuator (piston), such as excavators, industrial machine tools such as hydraulic presses, etc. Applies to

이와 같은 유압작동기구는 도 1에 도시된 바와 같은 유압회로(1)를 통하여 작동하는데, 엔진 또는 일정한 회전력을 유기하는 동력원(10)과 유압펌프(11)가 체결되어 고압의 유체를 발생한다.Such a hydraulic actuating mechanism is operated through the hydraulic circuit 1 as shown in FIG. 1, in which an engine or a power source 10 that induces a constant rotational force and a hydraulic pump 11 are coupled to generate a high pressure fluid.

상기와 같이 압축된 유체는 유압배관(12)을 통하여 방향제어밸브(13)로 유입되고, 유입된 유체는 방향제어밸브(13)의 정,역방향제어에 따라 각 유압배관(12)을 통하여 유압모터(14)로 공급되어 모터(14)와 연결된 주축의 회전작업을 수행한다.The compressed fluid as described above is introduced into the direction control valve 13 through the hydraulic pipe 12, the introduced fluid is hydraulic pressure through each hydraulic pipe 12 in accordance with the forward and reverse control of the direction control valve (13) It is supplied to the motor 14 to perform a rotation operation of the main shaft connected to the motor (14).

상기와 같이 형성된 유압회로(1)에는 유체의 공급배관(15)과 배출배관(16)이 형성되며,이들 사이에는 장치의 안전성을 유지하기위한 다수 개의 체크밸브(17)와 유압모터(14)에 제동력을 발생하는 릴리프밸브(18)가 장착된다.In the hydraulic circuit 1 formed as described above, a fluid supply pipe 15 and a discharge pipe 16 are formed between the plurality of check valves 17 and the hydraulic motor 14 to maintain the safety of the device. Relief valve 18 for generating a braking force is mounted on.

상기와 같이 형성된 유압회로(1)를 이용하여 유압모터(14)의 정방향(또는 정회전)운동을 필요로 할 경우;When the forward (or forward rotation) movement of the hydraulic motor 14 is required by using the hydraulic circuit (1) formed as described above;

방향제어밸브(13)에 형성된 인렛포트(20)와 공급배관(15)이 도통하여 유압모터(14)에 공급되어 주축을 회전시키기며, 유압모터(14)내를 순환한 유체는 배출배관(16)과 도통한 방향제어밸브(13)의 아웃렛포트(21)를 통하여 유체탱크(22)로 이송된다.The inlet port 20 formed on the directional control valve 13 and the supply pipe 15 are electrically connected to the hydraulic motor 14 so as to rotate the main shaft. The fluid circulated in the hydraulic motor 14 is discharged to the discharge pipe ( It is conveyed to the fluid tank 22 through the outlet port 21 of the direction control valve 13 which was connected with 16).

상기와 같이 정방향(또는 정회전)운동하는 유압모터(14)의 역방향운동이 필요할 경우에는 방향제어밸브(13)내의 인/아웃렛포트(20',21')가 상호 교차된 형태의 인렛포트(20')와 배출배관(16)을 통하여 유체가 역방향으로 이송되어 유압모터(14)의 주축이 역회전할 수 있는 동력을 전달한다.When the reverse movement of the hydraulic motor 14 moving forward (or forward rotation) as described above is required, the inlet port 20 ', 21' in the direction control valve 13 crosses each other. 20 ') and the discharge pipe 16, the fluid is conveyed in the reverse direction to transmit the power for the main shaft of the hydraulic motor 14 to reverse rotation.

상기와 같이 역방향으로 공급된 유체는 유압모터(14)를 순환한 후 공급배관(15)과 도통된 아웃렛포트(21')를 통하여 유체탱크(22)로 이송되어 작업을 완료한다.As described above, the fluid supplied in the reverse direction is circulated through the hydraulic motor 14 and then transferred to the fluid tank 22 through the outlet port 21 ′ connected to the supply pipe 15 to complete the work.

상기와 같이 진행되는 작업은 지속적인 유체의 공급으로 유압모터(14)의 주축은 연속회전하는 상태이며,The operation proceeds as described above is the main shaft of the hydraulic motor 14 is continuously rotated by the continuous supply of fluid,

이 때 일시적 또는 작업방향을 전환하기위해 유압모터(14)주축의 회전을 멈출 경우 방향제어밸브(13)내의 인/아웃렛포트(20,21,20',21')와 유압배관(15,16)을 폐쇄하여 유체공급을 중단하여 제동력을 얻는다.At this time, when the rotation of the hydraulic motor 14 spindle is stopped to change the temporary or working direction, the in / outlet ports 20, 21, 20 ', 21' and the hydraulic piping (15, 16) in the direction control valve 13 are stopped. ) To close the fluid supply to obtain braking force.

이 과정에서 순간적으로 폐쇄된 방향제어밸브(13)로 인해 유압모터(14)에서 방향제어밸브(13)상간에 위치한 유압배관(15,16)내에는 상당한 압력의 유체가 잔존하고, 이는 대부분이 방향제어밸브(13)와 동시에 통로를 개방한 릴리프밸브(18)를 통하여 외부로 유출된다.Due to the momentary closing of the directional control valve 13 in the process, a considerable pressure of fluid remains in the hydraulic pipes 15 and 16 located between the directional control valve 13 and the hydraulic motor 14, which is mostly At the same time as the direction control valve 13, it flows out through the relief valve 18 which opened the channel | path.

상기와 같이 유압의 중단으로 회전을 멈춘 유압모터(14)를 재기동할 때에는 상술한 유압펌프(11)의 유체를 이용하여 작동한다.As described above, when restarting the hydraulic motor 14, which has stopped rotating due to the interruption of the hydraulic pressure, the hydraulic motor 14 operates using the fluid of the hydraulic pump 11 described above.

이와 같이 회전하는 유압모터(14)를 정지시키기위한 제동력은 유압의 공급을 중단함으로서 쉽게 얻을 수 있는데,The braking force for stopping the rotating hydraulic motor 14 can be easily obtained by stopping the supply of hydraulic pressure,

이 때 중단된 유압과 함께 유압배관(15,16)내에는 상당한 고압력을 가진 유체가 운동에너지를 가진 채 잔존하며, 이는 릴리프밸브(18)를 통하여 외부로 유출되면서 운동에너지가 열에너지로 변화하면서 손실되고 만다.At this time, the fluid with a considerable high pressure remains in the hydraulic pipe 15 and 16 with kinetic energy with the stopped hydraulic pressure. To be.

상기와 같이 손실된 에너지는 재생이 불가능하여, 유압모터(14)의 재기동시 초기 에너지량이 증가하여 에너지효율이 저하하고, 초기 에너지량이 부족할 경우 유압모터(14)의 가속성능이 저하되는 문제점을 안고 있었다.The energy lost as described above cannot be regenerated, and thus the initial energy amount increases when the hydraulic motor 14 is restarted, thereby degrading energy efficiency, and when the initial energy amount is insufficient, the acceleration performance of the hydraulic motor 14 decreases. there was.

이에 본 발명에서는 상기한 여러 가지 문제점을 해결하기위해 창출된 것으로 유압회로의 일측에 축압기를 설치하여 손실되는 고압의 유체를 일시적으로 보관할 수 있도록하며, 이들의 이용을 위해 별도의 축압기용 포트를 가지는 방향제어밸브를 구비하여 에너지효율의 향상과 유압모터의 재기동시 가속성능향상을 그 목적으로 한다.Therefore, the present invention was created to solve the various problems described above to install a accumulator on one side of the hydraulic circuit to temporarily store the high-pressure fluid is lost, a separate accumulator port for their use Its purpose is to provide directional control valve to improve energy efficiency and acceleration performance when hydraulic motor is restarted.

도 1은 종래 기술이 적용된 유압회로를 도시한 회로도,1 is a circuit diagram showing a hydraulic circuit to which the prior art is applied;

도 2은 본 발명이 적용된 유압회로를 도시한 회로도.Figure 2 is a circuit diagram showing a hydraulic circuit to which the present invention is applied.

*도면의 주요부분에 사용된 부호의 설명** Explanation of symbols used in the main part of the drawing *

3;유압회로3; hydraulic circuit

34;유압펌프34; hydraulic pump

35;유체탱크35; fluid tank

37;방향제어밸브37; directional control valve

39;유압모터39; hydraulic motor

40,44;인/아웃렛포트40,44; In / Outlet Port

42;축압기42; accumulator

45;어시스터포트45; assist port

이하 첨부되는 도면과 관련하여 본 발명의 구성 및 작용에 대하여 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

도 2은 본 발명이 적용된 유압회로를 도시한 회로도로서 함께 설명한다.2 is a circuit diagram showing a hydraulic circuit to which the present invention is applied.

고압의 유체를 공급받아 일정한 회전수로 회전하는 유압모터는 유체의 압축에 필요한 유압펌프와 압축된 유체의 적정방향제어를 위한 방향제어밸브로 형성된 유압회로를 통하여 작동한다.The hydraulic motor, which is supplied with high-pressure fluid and rotates at a constant speed, operates through a hydraulic circuit formed of a hydraulic pump for compressing the fluid and a direction control valve for proper direction control of the compressed fluid.

상기 유압회로(3)는 도 2에서와 같이 유압형성부(30)와 유압제어부(31), 유압작동부(32)로 크게 구성되며;The hydraulic circuit (3) is largely composed of a hydraulic forming unit (30), a hydraulic control unit (31), and an hydraulic operating unit (32) as shown in FIG.

상기 유압형성부(30)에는 엔진이나 모터와 같은 동력원(33)에 연결된 유압펌프(34)와 유체의 공급에 필요한 유체탱크(35)로 형성된다.The hydraulic forming unit 30 is formed of a hydraulic pump 34 connected to a power source 33 such as an engine or a motor, and a fluid tank 35 for supplying a fluid.

상기와 같이 구성된 유압형성부(30)에서 생성된 고압의 유체는 유압배관(36)을 따라 방향제어밸브(37)가 형성된 유압제어부(31)로 유입되며, 유입된 유체는 인렛포트(40)와 도통된 공급배관(38)을 따라 유압모터(39)가 형성된 유압작동부(32)로 이송된다.The high pressure fluid generated in the hydraulic forming unit 30 configured as described above is introduced into the hydraulic control unit 31 in which the directional control valve 37 is formed along the hydraulic pipe 36, and the introduced fluid is inlet port 40. The hydraulic motor 39 is transferred to the hydraulic actuating part 32 along the supply pipe 38 which is electrically connected to the hydraulic pipe 39.

상기 유압작동부(32)에는 다수 개의 체크밸브(41)와 축압기(accumulator;42)가 형성되며, 상기 축압기(42)는 방향제어밸브(37)와 연결되어 별도의 배출포트(43)를 형성한다.A plurality of check valves 41 and an accumulator 42 are formed in the hydraulic actuator 32, and the accumulator 42 is connected to the direction control valve 37 to separate discharge ports 43. To form.

상기와 같이 유압작동부(32)와 유압제어부(31)의 매개체역할을 수행하는 방향제어밸브(37)는 정방향운동에 필요한 인/아웃렛포트(40,44)와 역방향운동에 필요한 교차형 인/아웃렛포트(40',44')가 구비되며, 상기 정,역방향 운동에 소요되는 인렛포트(40,44,40'44')일측에는 축압기(42)의 배출포트(43)와 연결하기위한 어시스트포트(assist pot;45)를 구비한다.As described above, the direction control valve 37 which serves as a medium for the hydraulic actuating part 32 and the hydraulic control part 31 has the in / outlet ports 40 and 44 necessary for the forward motion and the cross-type in / needed for the reverse motion. Outlet ports 40 'and 44' are provided, and one side of the inlet ports 40, 44 and 40'44 'for the forward and reverse movements is connected to the discharge port 43 of the accumulator 42. An assist pot 45 is provided.

상기와 같이 구성된 본 발명의 작용상태를 살펴보면; 먼저, 엔진과 같은 동력원(33)을 이용하여 작동하는 유압펌프(34)는 펌프(34)내로 유입된 유체를 압축하여 고압상태로 배출한다.Looking at the operating state of the present invention configured as described above; First, the hydraulic pump 34 operating by using a power source 33 such as an engine compresses the fluid introduced into the pump 34 and discharges it under high pressure.

상기와 같이 배출된 유체는 유압배관(36)을 따라 방향제어밸브(37)로 유입되고, 이 때 정방향운동일 경우 인렛포트(40)와 공급배관(38)이 도통하여 유체가 유압모터(39)로 이송되어 주축을 회전시킨 후 배출배관(46)과 아웃렛포트(44)를 이용하여 유체탱크(35)로 배출된다.The discharged fluid as described above is introduced into the direction control valve 37 along the hydraulic pipe 36, in this case, the inlet port 40 and the supply pipe 38 conducts in the forward movement, the fluid is a hydraulic motor (39) After being transferred to the) and rotates the main shaft is discharged to the fluid tank 35 by using the discharge pipe 46 and the outlet port (44).

상기와 같은 상황에서 역방향운동을 할 경우에는 방향제어밸브(37)내의 인/아웃렛포트(40,44)를 교차형(40',44')으로 대치하여 유체를 이송하면 유압모터(39)는 역방향운동하여 소기의 목적을 달성한다.In the case of the reverse movement in the above situation, the hydraulic motor (39) is transferred to replace the in / out port (40, 44) in the directional control valve (37) to the cross type (40 ', 44') Reverse movement to achieve the desired purpose.

상기와 같이 회전하는 유압모터(39)의 주축을 정지시키고자 할 경우에는 방향제어밸브(37)를 중립위치에 고정하여 유압펌프(34)로부터의 유체공급을 중단하는데, 이 때 유압모터(39)와 방향제어밸브(37)상간의 유압배관(36)내에는 고압의 유체가 잔존한다.When the main shaft of the rotating hydraulic motor 39 is to be stopped as described above, the direction control valve 37 is fixed to a neutral position to stop the fluid supply from the hydraulic pump 34. At this time, the hydraulic motor 39 ) And the high pressure fluid remain in the hydraulic piping 36 between the direction control valve 37 and the above.

상기와 같이 고압상태의 잔존유체는 유압배관(36)일측에 구비된 체크밸브(41)를 통하여 축압기(42)로 저장되고, 저장된 축압기(42)내의 고압유체는 축압기배출포트(43)에 의해 단속된다.As described above, the remaining fluid in the high pressure state is stored in the accumulator 42 through the check valve 41 provided on one side of the hydraulic pipe 36, and the high pressure fluid in the stored accumulator 42 is stored in the accumulator discharge port 43. It is interrupted by).

상기와 같이 축압기(42)에 일정한 운동에너지를 가지는 잔존유체를 저장한 유압회로는 유압모터(39)의 재기동을 위해 정방향 또는 역방향의 인/아웃렛포트(40,44,40'44')를 공급/배출배관(38,46)과 도통시킨다.As described above, the hydraulic circuit that stores the remaining fluid having a constant kinetic energy in the accumulator 42 is connected to the in / outlet ports 40, 44, 40 '44' of the forward or reverse direction for restarting the hydraulic motor 39. It is connected to supply / exhaust pipes (38, 46).

이 때 각 인렛포트(40,40')의 일측에 구비된 어시스트포트(45)를 통하여 축압기(42)내의 고압유체가 유압펌프(34)로부터 유입되는 유체와 합쳐져 공급배관(38)을 따라 유압모터(39)로 이송된다.At this time, the high pressure fluid in the accumulator 42 is combined with the fluid flowing from the hydraulic pump 34 through the assist port 45 provided at one side of each inlet port 40, 40 ′, and then along the supply pipe 38. It is transferred to the hydraulic motor 39.

상기와 같이 축압기(42)에 저장된 고압의 잔존유체는 유압모터(39)의 재기동시 유압펌프(34)를 통하여 공급되는 유체에 운동에너지를 배가시키는 작용을 하여 유압모터(39)의 재기동시 가속성능을 향상시킴과 동시에 유압회로의 에너지효율이 향상되며,As described above, the high-pressure residual fluid stored in the accumulator 42 acts to double the kinetic energy to the fluid supplied through the hydraulic pump 34 at the time of restarting the hydraulic motor 39 to restart the hydraulic motor 39. Improve the acceleration performance and at the same time improve the energy efficiency of the hydraulic circuit.

또한 기존과 같이 손실되는 유체의 운동에너지가 열에너지로 변화하면서 유압회로에 작용하던 고온현상을 방지하여 유압작동유의 내구성이 증대된다.In addition, as the kinetic energy of the lost fluid is changed to thermal energy as before, the durability of the hydraulic oil is increased by preventing the high temperature phenomenon acting on the hydraulic circuit.

이상과 같이 구성된 본 발명인 유압에너지 재생브레이크시스템은 유압회로를 구동하는 유체의 재생이 가능하여 에너지효율의 상승으로 에너지절감효과가 증대되고, 재생된 에너지와 유압펌프의 에너지를 합하여 유압모터를 재기동함으로써 가속성능을 향상할 수 있는 유용한 발명이다.The hydraulic energy regeneration brake system of the present invention configured as described above is capable of regenerating the fluid driving the hydraulic circuit, thereby increasing energy efficiency, and increasing the energy saving effect, and restarting the hydraulic motor by adding the regenerated energy and the energy of the hydraulic pump. It is a useful invention that can improve acceleration performance.

Claims (2)

유압모터의 작동을 위해 동력원(33)에 연결된 유압펌프(34)와 유체의 공급에 필요한 유체탱크(35)로 형성된 유압형성부(30)와Hydraulic forming unit 30 formed of the hydraulic pump 34 connected to the power source 33 and the fluid tank 35 for supplying the fluid for the operation of the hydraulic motor and 상기 유압형성부(30)의 일측에는 생성된 고압의 유체를 작용방향을 제어하는 방향제어밸브(37)가 형성된 유압제어부(31),One side of the hydraulic forming unit 30, the hydraulic control unit 31 is formed with a direction control valve 37 for controlling the direction of operation of the generated high-pressure fluid, 상기 유압형성부(30)와 유압제어부(31)를 통하여 공급된 유체를 이용하여 구동하는 유압모터(39)를 구비한 유압회로(3)를 구성함에 있어서;In constructing a hydraulic circuit (3) having a hydraulic motor (39) for driving by using the fluid supplied through the hydraulic forming unit (30) and the hydraulic control unit (31); 상기 유압작동부(32)에는 다수 개의 체크밸브(41)와 축압기(accumulator;42)가 형성되며,The hydraulic actuator 32 is provided with a plurality of check valve 41 and the accumulator (accumulator) 42, 상기 축압기(42)는 방향제어밸브(37)와 연결되어 별도의 배출포트(43)를 형성한 것을 특징으로 하는 유압에너지 재생브레이크시스템.The accumulator 42 is connected to the direction control valve 37 to form a separate discharge port 43, characterized in that the hydraulic energy regeneration brake system. 제 1 항에 있어서;The method of claim 1; 상기 축압기가 연결된 방향제어밸브내 정,역방향 운동에 소요되는 인렛포트(40,44,40'44')일측에는 축압기(42)의 배출포트(43)와 연결하기위한 어시스트포트(assist pot;45)를 더 구비한 것을 특징으로 하는 유압에너지 재생브레이크시스템.An assist port for connecting the discharge port 43 of the accumulator 42 to one side of the inlet port 40, 44, 40'44 'for the forward and reverse movement in the direction control valve to which the accumulator is connected. Hydraulic energy regeneration brake system characterized in that it further comprises.
KR1019980044767A 1998-10-23 1998-10-23 Regenerated brake system with hydraulic energy KR20000026986A (en)

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KR1019980044767A KR20000026986A (en) 1998-10-23 1998-10-23 Regenerated brake system with hydraulic energy

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Application Number Priority Date Filing Date Title
KR1019980044767A KR20000026986A (en) 1998-10-23 1998-10-23 Regenerated brake system with hydraulic energy

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KR20000026986A true KR20000026986A (en) 2000-05-15

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