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WORKING MACHINE LIFTING AND WORKING FLUID TAKE OUT HYDRAULIC DEVICE OF AGRICULTURAL WORK VEHICLE
专利权人:
LTD.;DAEDONG INDUSTRIAL CO., LTD.;대동공업주식회사;DAEDONG INDUSTRIAL CO.
发明人:
PARK, JU HWANKR,박주환,KIM, SUNG KYOOKR,김성규,PARK, JU HWAN,KIM, SUNG KYOO
申请号:
KR1020170003370
公开号:
KR1020180082103A
申请日:
2017.01.10
申请国别(地区):
KR
年份:
2018
代理人:
摘要:
Disclosed is a hydraulic apparatus for lifting and lowering a working machine of a working vehicle for agricultural use. The hydraulic apparatus according to the present invention includes an elevating control valve unit for controlling the supply of pressure oil for elevating driving to a three-point elevating device mounted on the rear end of the agricultural working vehicle and driven by hydraulic pressure, a hydraulic pressure take-off valve unit provided to be able to receive pressurized oil in preference to the lift control valve unit on the basis of the flow of pressurized oil while interrupting the extraction of the pressurized oil out of the working vehicle for driving an external working machine driven by hydraulic pressure, and a flow control valve unit provided between the hydraulic pressure takeoff valve unit and the elevation control valve unit with a bypass flow path for fluidly connecting the hydraulic pressure supply valve unit supply side pressure line and the lift control valve unit supply side pressure line formed therein and a flow control valve provided so as to control the opening amount of the input-side branch portion of the bypass flow path, wherein the flow rate of the bypass flow path is regulated through the flow rate regulator to regulate the amount of flow that is bypassed to the pressure line on the supply side of the elevating control valve unit via the bypass flow path, and thus the external hydraulic pressure can be simultaneously discharged.COPYRIGHT KIPO 2018농업용 작업차량의 작업기 승강 및 유압 취출을 위한 유압장치가 개시된다. 본 발명에 따른 유압장치는, 농업용 작업차량 후미에 장착되며 유압으로 구동되는 3점 승강장치에 승강 구동용 압유의 공급을 단속하는 승강제어밸브유닛, 유압으로 구동되는 외부 작업기 구동을 위해 작업차량 밖으로의 압유의 취출을 단속하며 압유의 흐름을 기준으로 상기 승강제어밸브유닛에 우선하여 압유를 공급받을 수 있도록 구비된 유압취출밸브유닛 및 유압취출밸브유닛과 승강제어밸브유닛 사이에 설치되며, 내부에 유압취출밸브유닛 공급 측 압력라인과 승강제어밸브유닛 공급 측 압력라인을 유체이동 가능하게 연결하는 바이패스유로가 형성되고, 상기 바이패스유로의 입력 측 분기부의 개도량을 조절할 수 있도록 유량조절구가 구비된 유량조절밸브유닛을 포함하는 구성으로 이루어져, 유량조절구를 통한 바이패스유로의 유량조절로서 상기 바이패스유로를 거쳐 승강제어밸브유닛 공급 측 압력라인으로 바이패스되는 유량이 조절
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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