The present invention is intended to prevent a decrease in load capacity due to a remarkably reduced torque radius when an angle between a main boom and a support is small. A hand crane for lifting a cargo or a heavy object comprises a leg part which is installed in contact with the floor and supporting the weight of the hand crane, a support part extending from the leg part to an upper part, a main boom hinge-coupled to an end of the support part, and a lifting cylinder of which one end is hinge-coupled to the main boom by a first hinge member and the other end is hinge-coupled to the support part by a second hinge member, wherein the first hinge member is installed to be movable in a longitudinal direction of the main boom.

    본 발명은 메인붐과 지지대 사이 각도가 작을 때 토크 반경이 현저하게 줄어들어 가반하중이 감소하는 것을 방지하기 위한 것으로, 하물 또는 중량물을 인양하는 핸드크레인에 있어서, 바닥에 접하여 설치되며 핸드크레인의 하중을 지지하는 다리부, 다리부에서 상부로 연장형성되는 지지부, 지지부 단부에 힌지결합하는 메인붐, 일단이 제1힌지부재에 의해 메인붐에 힌지결합하며 타단이 제2힌지부재에 의해 지지부에 힌지결합하는 인양실린더를 포함하고, 제1힌지부재는 메인붐의 길이방향으로 이동 가능하게 설치되는 것을 특징으로 한다.


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    Title :

    Cylinder action point moving type hand crane


    Additional title:

    실린더 작용점 이동 방식 핸드크레인


    Contributors:

    Publication date :

    2019-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B66C Krane , CRANES



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