PROBLEM TO BE SOLVED: To provide a wheel device capable of shifting a crane to either a protruding posture or an embracing posture without deteriorating suspension performance during crane work.SOLUTION: A wheel device of a crane for supporting a jib that is rotatably attached to a boom comprises: an attachment/detachment mechanism detachably and rotatably attached to a tip part of the jib; a plurality of wheels rolling on a ground surface; and an adjustment mechanism for adjusting a distance between the ground surface and the attachment/detachment mechanism to a first distance when the jib takes a protruding posture in which the jib protrudes from the fallen boom, and to a second distance different from the first distance when the jib takes an embracing posture in which the jib is folded with respect to the fallen boom.SELECTED DRAWING: Figure 4

    【課題】クレーン作業時に吊り性能を悪化させることなく、クレーンを張出し姿勢および抱込み姿勢のいずれの姿勢にも移行させることのできる車輪装置を提供する。【解決手段】クレーンの車輪装置は、ブームに回動可能に取り付けられたジブを支持するクレーンの車輪装置であって、ジブの先端部に着脱可能かつ回動可能に取り付けられる着脱機構と、地面上を転動する複数の車輪と、地面と着脱機構との間の距離を、倒伏したブームからジブが張り出した張出し姿勢のときに第1の距離に調節し、倒伏したブームに対して折り畳まれた抱込み姿勢のときに第1の距離とは異なる第2の距離に調節する調節機構と、を備えている。【選択図】図4


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    Title :

    WHEEL DEVICE OF CRANE


    Additional title:

    クレーンの車輪装置


    Contributors:

    Publication date :

    2017-08-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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