To provide a measuring device to measure dimensions of a boom while traveling in the boom.SOLUTION: A boom measuring device 20 comprises a measuring body 21 to measure while traveling in a boom, and a controller body to control the drive of the measuring body 21. The measuring body 21 has a traveling unit 30, a center ring unit 100 mounted on the traveling unit 30, and a measuring unit 200. The traveling unit 30 has: a body frame 31 having supporting legs 32 with balls provided at its bottom; a screw shaft 44 rotatably supported by the body frame 31; and a slider 42 engaging with the screw shaft 44. The slider 42 supports a lift mechanism raising/lowering a sucker 60. The sucker 60 has a decompression chamber decompressed by a decompression mechanism and adsorbs to an inner surface of the boom. Dimensions of the inner surface of the boom are measured with the sucker adsorbed to the inner surface of the boom and the screw shaft 44 is rotated to move the measuring body 21 forward.SELECTED DRAWING: Figure 4

    【課題】ブーム内を走行しつつブームの寸法を計測する計測装置を提供する。【解決手段】ブーム計測装置20は、ブーム内を走行して計測を行う計測本体21と、計測本体21の駆動を制御する制御本体とを備える。計測本体21は、走行ユニット30と、走行ユニット30に搭載されたセンタリングユニット100及び計測ユニット200とを有する。走行ユニット30は、ボールが下端に設けられた支持脚32を有する本体フレーム31と、本体フレーム31に回転自在に支持されたねじ軸44と、ねじ軸44と噛合するスライダ42とを有する。スライダ42は、吸盤60を上下に昇降させるリフト機構を支持する。吸盤60は、減圧機構によって減圧される減圧チャンバを有し、ブームの内面に吸着する。吸盤がブームの内面に吸着した状態でブームの内面の寸法の計測が行われ、かつ、ねじ軸44が回転されて、計測本体21が前進する。【選択図】図4


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    Title :

    BOOM MEASURING DEVICE


    Additional title:

    ブーム計測装置


    Contributors:

    Publication date :

    2022-06-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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