The present invention relates to a coupling device of a crane to alternatively use a magnetic chuck and a grapple. According to the present invention, the coupling device comprises: a torque generation unit mounted in a main housing installed in a boom bar; a rotary unit rotated by the torque generation unit; a casing fixated in the rotary unit; a valve unit to pass supplied electricity and hydraulic pressure; a power transfer unit to receive the electric and the hydraulic pressure passing the valve unit, and including a downwardly exposed hydraulic jack and an electrode; a coupling block received and fixated in the internal space of the casing; a locking actuator installed in a side part of the casing; an insertion fixation unit fixated in the grapple and the magnetic chuck, and combined with the coupling block; and a connection unit docked with the power transfer unit. According to the present invention, since the grapple or the magnetic chuck is able to be selectively and independently used as necessary, weight load of the boom bar or a forklift is largely reduced, and mileage in accordance with operation is able to be also improved. Since the grapple and the magnetic chuck are able to be independently selected and used as necessary, operation quickness of equipment is excellent and thereby workability is able to be increased as much as that. Moreover, since connection and disconnection of the grapple and the magnetic chuck with respect to the boom bar is remotely controlled, operation convenience is good and a locking state is maintained by the locking actuator, so the coupling device is safe.

    본 발명은 자석척과 그래플의 교체사용을 위한 크레인용 커플링장치에 관한 것이다. 이는, 붐대에 설치되는 메인하우징에 장착된 토크발생부와; 토크발생부에 의해 회전하는 회전부와; 상기 회전부에 고정되는 케이싱과; 공급된 전력과 유압을 통과시키는 밸브유니트와; 상기 밸브유니트를 통과한 전력과 유압을 받아들이며, 그 하부에는 하향 노출된 유압잭과 전극이 마련되어 있는 동력전단부와; 상기 케이싱의 내부공간에 수용 고정되는 커플링블록과; 상기 케이싱의 측부에 설치되는 록킹액츄에이터와; 그래플 및 자석척에 각각 고정되며, 상기 커플링블록에 결합하는 삽입고정부와, 상기 동력전달부와 도킹 결합하받는 접속부를 포함한다. 상기와 같이 이루어지는 본 발명은, 그래플과 자석척을 필요에 따라 선택적으로 단독 사용할 수 있게 함으로써, 붐대나 집게차의 하중부담을 크게 경감시킴은 물론 운전에 따른 연비를 개선할 수 있게 하며, 그래플과 전자척이 필요에 따라 독립적으로 선택 사용되므로 장비의 작동 민첩성이 뛰어나 그만큼 작업성을 향상시킬 수 있게 하고, 붐대에 대한 그래플과 자석척의 장착과 분리가 원격으로 제어되므로 운전편리성이 좋고, 록킹액츄에이터에 의해 잠금상태가 유지되므로 매우 안전하다.


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    Title :

    COUPLING DEVICE OF CRANE FOR CHANGING USE OF MAGNETIC CHUCK AND GRAPPLE


    Additional title:

    자석척과 그래플의 교체사용을 위한 크레인용 커플링장치


    Contributors:
    HAN SEOK MIN (author) / LEE HUN SEOK (author)

    Publication date :

    2017-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B66C Krane , CRANES



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