PROBLEM TO BE SOLVED: To provide a replacement method for an earth drill auxiliary hoist rope that facilitates replacement of an earth drill auxiliary hoist rope from a turn to three turns.SOLUTION: In a replacement method for earth drill auxiliary hoist rope from a turn to three turns, where two first and second auxiliary hoist sheaves each wound with an auxiliary hoist rope 34 that suspends an auxiliary hoist hook 35 at the tip of a sheave shaft arranged at the tip of a boom 12 provided on a base machine 11, an auxiliary hoist rope is replaced from a turn to three turns by comprising a leaving rope 37 wound around the second auxiliary hoist sheave to keep both ends fixed on the boom 12 to tilt the boom 12 forward for placement of the auxiliary hoist hook 35 on the ground, by releasing the fixture of the leaving rope 37 to move ends to a vicinity of the ground to make one end of the leaving rope 37 pass through the sheave of the auxiliary hoist hook 35 for coupling with the end of the auxiliary hoist rope 34 via a cable clip, and by pulling the other end of the leaving rope 37.

    【課題】アースドリルの補巻ロープを1本掛けから3本掛けに容易に掛け替えることができる補巻ロープ掛け替え方法を提供する。【解決手段】ベースマシン11に設けられたブーム12の先端部に配置されたシーブ軸に、先端に補巻フック35を吊持する補巻ロープ34が巻掛けられる2つの第1補巻シーブ、第2補巻シーブを取り付けたアースドリルの補巻ロープ34を1本掛けから3本掛けに掛け替える方法であって、第2補巻シーブに巻掛けられ、両端をブーム12に固定したリービングロープ37を備え、ブーム12を前方に倒し、補巻フック35を地上に置き、リービングロープ37の固定を解除し、両端を地上付近に移動させ、前記リービングロープ37の一端を、補巻フック35のシーブに通して、ケーブルクリップを介して、補巻ロープ34の端部と連結し、リービングロープ37の他端を引張り、補巻ロープを1本掛けから3本掛けに掛け替える。【選択図】図4


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    Title :

    REPLACEMENT METHOD FOR AUXILIARY HOIST ROPE


    Additional title:

    補巻ロープ掛け替え方法


    Contributors:

    Publication date :

    2015-06-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren



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