To provide a hydraulic control system for a hydraulic bucket which miniaturizes a cable reel by reducing the number of core lines of a cable to feed power to the hydraulic bucket, and promotes an effective use of a narrow setting space above a crane, besides, broadens a moving range of the hydraulic bucket by miniaturization of crane dimensions, and promotes an effective use of buildings.SOLUTION: A power source, in which ON/OFF or phase sequence of the power source is switched, is fed power by a power feed line GL for a bucket and is fed power to a hydraulic bucket GB in a suspending state by a power feed line CA for a bucket (a cable reel winding-up cable) though a cable reel CRe, by opening and closing an electromagnetic contactor CX for closing that opens and closes a three-phase AC power source PW in a positive phase sequence or an electromagnetic contactor OX connected in a negative phase sequence, upon receiving an opening operation O or a closing operation C from a controller CL or a computer. Control lines do not include the power feed line GL and the power feed line CA feeding power to the hydraulic bucket GB, and has only three lines of three-phase power source lines.SELECTED DRAWING: Figure 1

    【課題】本発明は、油圧バケットに給電するケーブルの芯線数を減らすことにより、ケーブルリールを小さくし、狭小なクレーン上の設置スペースの有効活用を図るとともに、クレーン寸法の小型化により、油圧バケットの移動範囲を広くし、建屋の有効利用を図る油圧バケットの油圧制御システムを提供すること。【解決手段】三相交流電源PWをコントローラCL又はコンピュータからの開操作O又は閉操作Cを受けて、正相順で開閉する閉用電磁接触器CX、又はそれと逆相順に接続された開用電磁接触器OXの開閉により、電源のON/OFF又は相順の切り替えをした電源をバケット用給電線GLにより給電し、ケーブルリールCReを介してバケット用給電線(ケーブルリール巻取りケーブル)CAにより、宙吊り状態の油圧バケットGBに給電されるようにし、油圧バケットGBに給電されている給電線GL及び給電線CAを、制御線は含まず、三相電源線の3本だけにする。【選択図】図1


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    Title :

    HYDRAULIC CONTROL SYSTEM FOR HYDRAULIC BUCKET


    Additional title:

    油圧バケットの油圧制御システム


    Contributors:

    Publication date :

    2019-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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