PROBLEM TO BE SOLVED: To provide a light-weight and simplified boom deflection prevention device capable of easily coping with telescopic motion of a boom.SOLUTION: A boom deflection prevention device 10 comprises a post 27, a tension wire 28, and plural sheaves to which the tension wire 28 is stretched. The sheaves contain, a tension sheave 33, first tip sheave 36 to third tip sheave 38, and first base end sheave 39 to third base end sheave 41. Both end parts of the tension wire 28 are fixed to a swivel base 13 and a tip of a base boom 24. The tension wire 28 is stretched to the tension sheave 33, and is sequentially stretched to the respective tip sheaves and base end sheaves.SELECTED DRAWING: Figure 1

    【課題】ブームの伸縮に容易に対応できる簡単且つ軽量なブーム撓み防止装置の提供。【解決手段】ブーム撓み防止装置10は、ポスト27と、テンションワイヤ28と、このテンションワイヤ28が巻き掛けられる複数のシーブとを備える。当該シーブは、張力シーブ33、第1先端シーブ36〜第3先端シーブ38及び第1基端シーブ39〜第3基端シーブ41を含む。テンションワイヤ28の両端部は、旋回台13及びベースブーム24の先端部に固定される。テンションワイヤ28は、張力シーブ33に掛けられ、各先端シーブ及び基端シーブに順に巻き掛けられる。【選択図】図1


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    Title :

    BOOM DEFLECTION PREVENTION DEVICE


    Additional title:

    ブーム撓み防止装置


    Contributors:

    Publication date :

    2017-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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