PROBLEM TO BE SOLVED: To suppress an increase in weight and improve suspension capacity of a work machine.SOLUTION: A first reinforcement member 11 is provided from a boom foot part 5 toward a front part of a revolving bearing 22, a second reinforcement member 12 is provided from the boom foot part 5 toward a mast foot part 6, and a third reinforcement member 13 is provided from the mast foot part 6 toward a rear part of the revolving bearing 22. A fourth reinforcement member 14 is provided in an upper part of a side plate 3 from an intermediate region M located above the rear part of the revolving bearing 22 toward the front part of the revolving bearing 22, and a fifth reinforcement member 15 is provided from the intermediate region M toward the rear part of the revolving bearing 22. The first reinforcement member 11 comprises a lower end part connected to the front part of the revolving bearing 22, and the third reinforcement member 13 comprises a lower end part connected to the rear part of the revolving bearing 22. The fourth reinforcement member 14 comprises a lower end part connected to the front part of the revolving bearing 22, and the fifth reinforcement member 15 comprises a lower end part connected to the rear part of the revolving bearing 22.SELECTED DRAWING: Figure 3

    【課題】重量の増加を抑え、作業機械の吊能力を向上させる。【解決手段】ブームフット部5から旋回ベアリング22の前部に向かって第1の補強部材11を設け、ブームフット部5からマストフット部6に向かって第2の補強部材12を設け、マストフット部6から旋回ベアリング22の後部に向かって第3の補強部材13を設ける。側板3の上部に旋回ベアリング22の後部の上方に位置する中間領域Mから旋回ベアリング22の前部に向かって第4の補強部材14を設け、中間領域Mから旋回ベアリング22の後部に向かって第5の補強部材15を設ける。第1の補強部材11は、旋回ベアリング22の前部につながる下端部を備え、第3の補強部材13は、旋回ベアリング22の後部につながる下端部を備える。第4の補強部材14は、旋回ベアリング22の前部につながる下端部を備え、第5の補強部材15は、旋回ベアリング22の後部につながる下端部を備える。【選択図】図3


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    Title :

    REVOLVING FRAME OF WORK MACHINE


    Additional title:

    作業機械の旋回フレーム


    Contributors:

    Publication date :

    2017-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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