KR20190131369A - A electric vehicle for agricultural with limited slip differential - Google Patents

A electric vehicle for agricultural with limited slip differential Download PDF

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Publication number
KR20190131369A
KR20190131369A KR1020180056151A KR20180056151A KR20190131369A KR 20190131369 A KR20190131369 A KR 20190131369A KR 1020180056151 A KR1020180056151 A KR 1020180056151A KR 20180056151 A KR20180056151 A KR 20180056151A KR 20190131369 A KR20190131369 A KR 20190131369A
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unit
electric vehicle
hydraulic
solenoid valve
agricultural
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KR1020180056151A
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Korean (ko)
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김치옥
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김치옥
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2036—Electric differentials, e.g. for supporting steering vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/20—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing in which the differential movement is limited
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • 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
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Retarders (AREA)

Abstract

The present invention relates to an agricultural electric vehicle having a limited slip differential device, which performs limited slip difference and braking in one hydraulic pump to be suitable for agriculture and to reduce manufacturing costs. According to an embodiment of the present invention, the agricultural electric vehicle having a limited slip differential device, which is an agricultural electric vehicle driven by a storage battery and an electric motor, and has a cargo box, comprises: a brake unit operated by hydraulic pressure; a limited slip differential unit operated by hydraulic pressure; a conversion unit including a plurality of hydraulic lines separately connected to the brake unit and the limited slip differential unit, a hydraulic pump for supplying hydraulic pressure to the hydraulic lines, and a solenoid valve for allowing oil of the hydraulic pump to be supplied to only one of the brake unit and the limited slip differential unit; and a control unit for controlling the conversion unit.

Description

차동제한장치를 구비한 농업용 전기차{A electric vehicle for agricultural with limited slip differential}A electric vehicle for agricultural with limited slip differential}

본 발명은 차동제한장치를 구비한 농업용 전기차에 관한 것으로서, 더욱 상세하게는 차동제한 및 제동을 하나의 유압펌프에서 수행하여 농업용으로 적합하면서 제작비을 절감시킬 수 있는 차동제한장치를 구비한 농업용 전기차에 관한 것이다.The present invention relates to an agricultural electric vehicle having a differential limiting device, and more particularly, to an agricultural electric vehicle having a differential limiting device which is suitable for agricultural use and reduces manufacturing costs by performing differential limiting and braking in one hydraulic pump. will be.

종래 차동제한장치를 갖는 농업용 운반차가 개시되어 있다. 종래의 농업용 운반차의 차동제한장치는 승용차 등의 차동제한장치를 차용한 것이어서, 농업용 운반차의 운용 또는 제동 등에 적합하지 않고 농업용 운반차의 제작비용을 상승시키는 요인이 된다.Conventionally, an agricultural vehicle having a differential limiting device is disclosed. Conventional differential limiting device for agricultural carriages employs a differential limiting device such as a passenger car, which is not suitable for the operation or braking of the agricultural transport vehicle, and increases the manufacturing cost of the agricultural transport vehicle.

따라서 농업용으로 적합하면서 제작비용의 절감을 도모할 수 있는 차동제한장치 필요한 실정이다.Therefore, there is a need for a differential limiting device that is suitable for agriculture and can reduce manufacturing costs.

(문헌 1) 대한민국 공개특허 제10-2016-0136117호(Document 1) Republic of Korea Patent Publication No. 10-2016-0136117

본 발명의 목적은, 농업용으로 적합한 차동제한장치를 구비한 농업용 전기차를 제공하는 것에 있다.An object of the present invention is to provide an agricultural electric vehicle provided with a differential limiting device suitable for agricultural use.

본 발명의 목적은, 제작비용을 절감시킬 수 있는 차동제한장치를 구비한 농업용 전기차를 제공하는 것에 있다.An object of the present invention is to provide an agricultural electric vehicle provided with a differential limiting device that can reduce manufacturing costs.

본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 축전지 및 전기 모터에 의해 구동되고 적재함이 구비된 농업용 전기차로써, 유압에 의해 작동되는 브레이크부;와, 유압에 의해 작동되는 차동제한부;와, 브레이크부와 차동제한부에 각각 연결되는 복수의 유압라인;과 유압라인들에 유압을 공급하는 유압펌프;와 유압펌프의 오일이 브레이크부 또는 차동제한부 중 어느 한쪽으로만 공급되도록 하는 솔레노이드밸브;를 포함하는 변환부;와, 변환부을 제어하는 제어부;를, 포함하는 것을 특징으로 한다.Agricultural electric vehicle provided with a differential limiting device according to an embodiment of the present invention, an agricultural electric vehicle driven by a storage battery and an electric motor and equipped with a loading box, a brake unit which is operated by hydraulic pressure; and differential limitation operated by hydraulic pressure And a plurality of hydraulic lines respectively connected to the brake unit and the differential limit unit; and a hydraulic pump for supplying hydraulic pressure to the hydraulic lines; and the oil of the hydraulic pump to be supplied only to the brake unit or the differential limit unit. And a conversion unit including a solenoid valve to control the control unit and a control unit for controlling the conversion unit.

본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 솔레노이드밸브은, 유압펌프와 브레이크부 사이에 배치된 제1유압라인에 설치된 제1솔레노이드밸브;와, 유압펌프와 차동제한부 사이에 배치된 제2유압라인에 설치된 제2솔레노이드밸브;를 포함하는 것을 특징으로 한다.The solenoid valve of the agricultural electric vehicle having a differential limiting device according to an embodiment of the present invention, the first solenoid valve installed in the first hydraulic line disposed between the hydraulic pump and the brake portion; and disposed between the hydraulic pump and the differential limiting portion And a second solenoid valve installed on the second hydraulic line.

본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차에 있어서, 제1솔레노이밸브는 브레이크부만 작동될 경우에 오일을 공급할 수 있도록 개방되고, 제2솔레노이밸브는 차동제한부가 작동될 경우에 오일을 공급할 수 있도록 개방되는 것을 특징으로 한다.In an agricultural electric vehicle having a differential limiting device according to an embodiment of the present invention, the first solenoid valve is open to supply oil when only the brake part is operated, and the second solenoid valve is operated to operate the differential limit part. In case it is characterized in that it is opened to supply oil.

따라서, 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 농업용으로 적합하게 된다.Therefore, the agricultural electric vehicle provided with the differential limiting apparatus which concerns on the Example of this invention becomes suitable for agriculture.

또한, 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 제작비용을 절감시킬 수 있게 된다.In addition, the agricultural electric vehicle provided with a differential limiting apparatus according to an embodiment of the present invention, it is possible to reduce the manufacturing cost.

본 발명의 효과는 이상에서 언급된 것들에 한정되지 않으며, 언급되지 아니한 다른 해결과제들은 아래의 기재로부터 당업자에게 명확하게 이해되어 질 수 있을 것이다.The effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

도 1은 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 구성도이다.
도 2는 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 차동제한장치의 외형이다.
도3은 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 변환부의 도면이다.1 is a block diagram of an agricultural electric vehicle having a differential limiting apparatus according to an embodiment of the present invention.
Figure 2 is an appearance of a differential limiting device for an agricultural electric vehicle with a differential limiting device according to an embodiment of the present invention.
3 is a view of the conversion unit of the agricultural electric vehicle with a differential limiting device according to an embodiment of the present invention.

본 발명의 추가적인 목적들, 특징들 및 장점들은 다음의 상세한 설명 및 첨부도면으로부터 보다 명료하게 이해될 수 있다. Further objects, features and advantages of the present invention can be more clearly understood from the following detailed description and the accompanying drawings.

본 발명의 상세한 설명에 앞서, 본 발명은 다양한 변경을 도모할 수 있고, 여러 가지 실시 예를 가질 수 있는바, 아래에서 설명되고 도면에 도시된 예시들은 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.Prior to the detailed description of the present invention, the present invention may be variously modified and may have various embodiments, and the examples described below and illustrated in the drawings are intended to limit the present invention to specific embodiments. It is to be understood that the present invention includes all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

어떤 구성요소가 다른 구성요소에 "연결되어" 있다거나 "접속되어" 있다고 언급된 때에는, 그 다른 구성요소에 직접적으로 연결되어 있거나 또는 접속되어 있을 수도 있지만, 중간에 다른 구성요소가 존재할 수도 있다고 이해되어야 할 것이다. 반면에, 어떤 구성요소가 다른 구성요소에 "직접 연결되어" 있다거나 "직접 접속되어" 있다고 언급된 때에는, 중간에 다른 구성요소가 존재하지 않는 것으로 이해되어야 할 것이다.When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

본 명세서에서 사용한 용어는 단지 특정한 실시 예를 설명하기 위해 사용된 것으로, 본 발명을 한정하려는 의도는 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. 본 명세서에서, "포함하다" 또는 "가지다" 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 한 개 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, one or more other It is to be understood that the present invention does not exclude the possibility of the presence or the addition of features, numbers, steps, operations, components, parts, or a combination thereof.

또한, 명세서에 기재된 "...부", "...유닛", "...모듈" 등의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다.In addition, the terms "... unit", "... unit", "... module", and the like described in the specification mean a unit for processing at least one function or operation, which means hardware or software or hardware and It can be implemented in a combination of software.

또한, 첨부 도면을 참조하여 설명함에 있어, 도면 부호에 관계없이 동일한 구성 요소는 동일한 참조부호를 부여하고 이에 대한 중복되는 설명은 생략하기로 한다. 본 발명을 설명함에 있어서 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.In addition, in the description with reference to the accompanying drawings, the same components regardless of reference numerals will be given the same reference numerals and duplicate description thereof will be omitted. In the following description of the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

이하, 첨부된 도면들을 참조하면서 본 발명의 실시예를 상세히 설명하기로 한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 구성도이고, 도 2는 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 차동제한장치의 외형이다.1 is a configuration diagram of an agricultural electric vehicle having a differential limiting apparatus according to an embodiment of the present invention, Figure 2 is an external appearance of a differential limiting apparatus of an agricultural electric vehicle having a differential limiting apparatus according to an embodiment of the present invention.

본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 축전지 및 전기 모터에 의해 구동되고 적재함이 구비된 농업용 전기차로써, 유압에 의해 작동되는 브레이크부(100)와, 유압에 의해 작동되는 차동제한부(200)를 포함한다.Agricultural electric vehicle having a differential limiting device according to an embodiment of the present invention is an agricultural electric vehicle driven by a storage battery and an electric motor and equipped with a loading box, the brake unit 100 is operated by hydraulic pressure and is operated by hydraulic pressure The differential limiter 200 is included.

도 3은 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차의 변환부의 도면이다.3 is a view of the conversion unit of the agricultural electric vehicle with a differential limiting device according to an embodiment of the present invention.

본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 브레이크부와 차동제한부에 각각 연결되는 복수의 유압라인(310,320,340,350)과 유압라인(310,320,340,350)들에 유압을 공급하는 유압펌프(370)와 유압펌프의 오일이 브레이크부 또는 차동제한부 중 어느 한쪽으로만 공급되도록 하는 솔레노이드밸브(310,340)를 포함하는 변환부(300)와, 변환부을 제어하는 제어부(미도시)를 더 포함한다.Agricultural vehicle equipped with a differential limiting device according to an embodiment of the present invention, a hydraulic pump (370) for supplying hydraulic pressure to a plurality of hydraulic lines (310, 320, 340, 350) and hydraulic lines (310, 320, 340, 350) connected to the brake unit and the differential limit, respectively. And a converting unit 300 including solenoid valves 310 and 340 for supplying oil of the hydraulic pump to the brake unit or the differential limiting unit, and a control unit (not shown) to control the converting unit.

솔레노이드밸브은, 유압펌프와 브레이크부 사이에 배치된 제1유압라인(320,330)에 설치된 제1솔레노이드밸브(310)와, 유압펌프와 차동제한부 사이에 배치된 제2유압라인(350,360)에 설치된 제2솔레노이드밸브(340)를 포함한다.The solenoid valve may include a first solenoid valve 310 installed in the first hydraulic lines 320 and 330 disposed between the hydraulic pump and the brake unit, and a second hydraulic line 350 and 360 disposed between the hydraulic pump and the differential limiting unit. Two solenoid valve 340 is included.

제1솔레노이밸브(310)는 브레이크부만 작동될 경우에 오일을 공급할 수 있도록 개방되고, 제2솔레노이밸브(340)는 차동제한부가 작동될 경우에 오일을 공급할 수 있도록 개방된다.The first solenoid valve 310 is opened to supply oil when only the brake unit is operated, and the second solenoid valve 340 is opened to supply oil when the differential limit unit is operated.

브레이크부(100)는 유압이 회수되는 인렛밸브(110)와 유압이 공급되는 아울렛밸브(120)를 더 포함한다.The brake unit 100 further includes an inlet valve 110 for recovering hydraulic pressure and an outlet valve 120 for supplying hydraulic pressure.

유압펌프(370)와 브레이크부(100) 사이에는 제1유압라인이 배치되고, 상기 제1유압라인은 유압펌프(370)에서 브레이크부(100)로 유압이 공급되는 제1공급라인(320)과 브레이크부(100)에서 유압펌프(370)로 유압이 회수되는 제1회수라인(330)을 포함한다.A first hydraulic line is disposed between the hydraulic pump 370 and the brake unit 100, and the first hydraulic line is a first supply line 320 in which hydraulic pressure is supplied from the hydraulic pump 370 to the brake unit 100. And a first recovery line 330 for recovering the hydraulic pressure from the brake unit 100 to the hydraulic pump 370.

유압펌프(370)의 제1공급라인(320)에는 제1솔레노이드밸브(310)가 배치되고, 브레이크부(100) 전단에 인렛밸브(110)가 배치된다. 또한 상기 제1회수라인(330) 중간에는 아울렛밸브(120)가 배치된다.The first solenoid valve 310 is disposed in the first supply line 320 of the hydraulic pump 370, and the inlet valve 110 is disposed in front of the brake unit 100. In addition, an outlet valve 120 is disposed in the middle of the first recovery line 330.

유압펌프(370)와 차동제한부(200) 사이에는 제2유압라인이 배치된다. 제2유압라인은 유압펌프(370)에서 상기 차동실린더(128)로 유압이 공급되는 제2공급라인(350) 및 상기 차동실린더(128)에서 유압펌프(370)로 유압이 회수되는 제2회수라인(360)을 포함한다.A second hydraulic line is disposed between the hydraulic pump 370 and the differential limit unit 200. The second hydraulic line is a second supply line 350 in which the hydraulic pressure is supplied from the hydraulic pump 370 to the differential cylinder 128 and a second recovery in which the hydraulic pressure is recovered from the differential cylinder 128 to the hydraulic pump 370. Line 360.

페달(410)이 작동되면, 실린더(420)에 의해서 제1유압라인(320,330)으로 유압이 공급된다. 따라서, 브레이크부(100)가 작동된다.When the pedal 410 is operated, the hydraulic pressure is supplied to the first hydraulic lines 320 and 330 by the cylinder 420. Thus, the brake unit 100 is operated.

본 실시예에서 브레이크부(100)는 안티록브레이크시스템을 통해서 휠이 노면에서 미끄러지는 것을 방지한다. 특히, 제어부는 인렛밸브(110), 아울렛밸브(120), 제1솔레노이드밸브(310), 제2솔레노이드밸브(340) 및 유압펌프(370)를 제어한다.In the present embodiment, the brake unit 100 prevents the wheel from slipping on the road surface through the anti-lock brake system. In particular, the controller controls the inlet valve 110, the outlet valve 120, the first solenoid valve 310, the second solenoid valve 340, and the hydraulic pump 370.

브레이크부(100)가 작동될 때에는 상기 제1솔레노이드밸브(310)와 인렛밸브(110)는 열리고, 상기 제2솔레노이드밸브(340)는 닫힌다.When the brake unit 100 is operated, the first solenoid valve 310 and the inlet valve 110 are opened, and the second solenoid valve 340 is closed.

또한, 제어부가 좌우 휠에 전달되는 토크를 변화시켜야 한다고 판단했을 경우, 유압펌프(370) 및 제1솔레노이드밸브(310) 및 제2솔레노이드밸브(340)를 제어하여 차동제한부(200)를 작동시킨다. 따라서 차동제한부(200)에 의해 좌우 휠에 전달되는 토크가 각각 변환된다.In addition, when the controller determines that the torque transmitted to the left and right wheels should be changed, the differential pump 200 is operated by controlling the hydraulic pump 370, the first solenoid valve 310, and the second solenoid valve 340. Let's do it. Therefore, the torque transmitted to the left and right wheels by the differential limiting unit 200 are respectively converted.

차동제한부(200)가 작동될 때에는 제2솔레노이드밸브(340)는 열리고, 제1솔레노이드밸브(310)는 닫힌다.When the differential limit unit 200 is operated, the second solenoid valve 340 is opened and the first solenoid valve 310 is closed.

유압펌프(370)가 한 개만 설치되어 브레이크부와 차동제한부를 작동시킬 수 있으므로써, 제동장치 및 차동제한장치의 제작비용이 절감될 수 있게 된다.Since only one hydraulic pump 370 may be installed to operate the brake unit and the differential limit unit, the manufacturing cost of the brake unit and the differential limit unit may be reduced.

이상에서 설명한 바와 같이, 본 발명의 실시예에 따른 차동제한장치를 구비한 농업용 전기차는, 차동제한기능 및 제동기능을 수행하는 유압펌프를 포함하여, 농업용으로 적합하면서 제작비을 절감시킬 수 있는 차동제한장치를 구비한 농업용 전기차를 제공하는 것을 기본적인 기술적 사상으로 하고 있음을 알 수 있다.As described above, the agricultural electric vehicle having a differential limiting device according to an embodiment of the present invention, including a hydraulic pump for performing a differential limiting function and a braking function, a differential limiting device that is suitable for agriculture and can reduce the manufacturing cost It can be seen that the basic technical idea to provide an agricultural electric vehicle having a.

본 명세서에서 설명되는 실시 예와 첨부된 도면은 본 발명에 포함되는 기술적 사상의 일부를 예시적으로 설명하는 것에 불과하다. 따라서, 본 명세서에 개시된 실시 예는 본 발명의 기술적 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이므로, 이러한 실시 예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아님은 자명하다. 본 발명의 명세서 및 도면에 포함된 기술적 사상의 범위 내에서 당업자가 용이하게 유추할 수 있는 변형 예와 구체적인 실시 예는 모두 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The embodiments and the accompanying drawings described herein are merely illustrative of some of the technical ideas included in the present invention. Therefore, since the embodiments disclosed herein are not intended to limit the technical spirit of the present invention, but to explain, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments. Modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be construed as being included in the scope of the present invention.

10...농업용 전기차
100...브레이크부
110...인렛밸브
120...아웃렛밸브
200...차동제한부
300...변환부
310...제1솔레노이드밸브
320...제1공급라인
330...제1회수라인
340...제2솔레노이드밸브
350...제2공급라인
360...제2회수라인
370...유압펌프
410...페달
420...실린더10 ... agricultural electric cars
100 ... brake part
110.Inlet valve
120 ... outlet valve
200.Differential Limit
300.Converter
310.First solenoid valve
320 ... First supply line
330 ... First recovery line
340 ... Second solenoid valve
350 second supply line
360 second recovery line
370.Hydraulic Pump
410 ... pedal
420 ... cylinder

Claims (3)

축전지 및 전기 모터에 의해 구동되고 적재함이 구비된 농업용 전기차에 있어서,
유압에 의해 작동되는 브레이크부;와,
유압에 의해 작동되는 차동제한부;와,
상기 브레이크부와 상기 차동제한부에 각각 연결되는 복수의 유압라인;과, 상기 유압라인들에 유압을 공급하는 유압펌프;와, 상기 유압펌프의 오일이 상기 브레이크부 또는 상기 차동제한부 중 어느 한쪽으로만 공급되도록 하는 솔레노이드밸브;를 포함하는 변환부;와,
상기 변환부을 제어하는 제어부;를,
포함하는 것을 특징으로 하는 차동제한장치를 구비한 농업용 전기차.
An agricultural electric vehicle driven by a storage battery and an electric motor and equipped with a loading box,
A brake unit operated by hydraulic pressure; and,
Differential limiting portion operated by hydraulic pressure; and,
A plurality of hydraulic lines respectively connected to the brake unit and the differential limit unit; and a hydraulic pump for supplying hydraulic pressure to the hydraulic lines; and the oil of the hydraulic pump is one of the brake unit and the differential limit unit. Conversion unit comprising; solenoid valve to be supplied only to; and
A control unit for controlling the conversion unit;
Agricultural electric vehicle with a differential limiting device comprising a.
제1항에 있어서,
상기 솔레노이드밸브은,
상기 유압펌프와 상기 브레이크부 사이에 배치된 제1유압라인에 설치된 제1솔레노이드밸브;와,
상기 유압펌프와 상기 차동제한부 사이에 배치된 제2유압라인에 설치된 제2솔레노이드밸브;를,
포함하는 것을 특징으로 하는 차동제한장치를 구비한 농업용 전기차.
The method of claim 1,
The solenoid valve,
A first solenoid valve installed in a first hydraulic line disposed between the hydraulic pump and the brake unit;
A second solenoid valve installed in a second hydraulic line disposed between the hydraulic pump and the differential limiting unit;
Agricultural electric vehicle with a differential limiting device comprising a.
제2 항에 있어서,
상기 제1솔레노이밸브는,
상기 브레이크부만 작동될 경우에 오일을 공급할 수 있도록 개방되고,
상기 제2솔레노이밸브는,
상기 차동제한부가 작동될 경우에 오일을 공급할 수 있도록 개방되는,
것을 특징으로 하는 차동제한장치를 구비한 농업용 전기차.The method of claim 2,
The first solenoid valve,
When only the brake unit is operated to open the oil supply,
The second solenoid valve,
Opened to supply oil when the differential limit is operated,
Agricultural electric vehicle provided with a differential limiting device, characterized in that.
KR1020180056151A 2018-05-16 2018-05-16 A electric vehicle for agricultural with limited slip differential KR20190131369A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160136117A (en) 2015-05-19 2016-11-29 이동철 Cart for agriculture having limited slip differential

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160136117A (en) 2015-05-19 2016-11-29 이동철 Cart for agriculture having limited slip differential

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