The present invention relates to a cooling apparatus for construction machinery and, more specifically, relates to a cooling apparatus for construction machinery, wherein a cooling fan to cool and clean the inside of construction machinery is automatically and repeatedly switched from a forward direction to a reverse direction, which comprises: a hydraulic motor that rotates the cooling fan in a forward direction and a reverse direction in accordance with a supply direction of pressure oil; a switching valve for switching a supply direction of the pressure oil supplied to the hydraulic motor; a hydraulic pump for supplying pressure oil to the switching valve; and a pressure relief portion for relieving pressure by discharging the pressure oil flowing backward to the hydraulic pump due to inertia of the hydraulic motor to a hydraulic oil tank when the construction machinery is turned off while the cooling fan is rotating in a reverse direction.

    본 발명은 건설기계의 냉각장치에 관한 것으로서, 건설기계 내부의 냉각과 청소를 위해 냉각팬이 정방향에서 역방향으로 자동 반복 전환되는 건설기계의 냉각장치로서, 압유의 공급 방향에 따라 상기 냉각팬을 정방향 회전 및 역방향 회전시키는 유압모터; 상기 유압모터로 공급되는 압유의 공급방향을 전환시키는 절환밸브; 상기 절환밸브에 압유를 공급하는 유압펌프; 및 상기 냉각팬이 역방향으로 회전하고 있는 동안에 상기 건설기계의 시동이 꺼질 경우, 상기 유압모터의 관성으로 인하여 상기 유압펌프 쪽으로 역류하는 압유를 작동유탱크로 배출시켜 압력을 완화시키는 압력완화부를 포함하는 것을 특징으로 한다.


    Access

    Download


    Export, share and cite



    Title :

    COOLING APPARATUS FOR CONSTRUCTION MACHINERY


    Additional title:

    건설기계의 냉각장치


    Contributors:
    LEE JUN WOO (author)

    Publication date :

    2019-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



    COOLING APPARATUS FOR CONSTRUCTION MACHINERY

    European Patent Office | 2021

    Free access

    ENGINE ROOM COOLING APPARATUS FOR CONSTRUCTION MACHINERY

    European Patent Office | 2015

    Free access


    COOLING MODULE AND CONSTRUCTION MACHINERY HAVING THE SAME

    YOO CHEHYEOK | European Patent Office | 2022

    Free access

    MANAGEMENT SYSTEM OF CONSTRUCTION MACHINERY, CONSTRUCTION MACHINERY

    SANO YUSUKE / HONDA KEIJI / ONODERA SUSUMU | European Patent Office | 2023

    Free access