PROBLEM TO BE SOLVED: To provide a revolving frame of a construction machine with improved rigidity against loads exerted on each of vertical plates from a work arm device, counterweight, etc.SOLUTION: A revolving frame 22 includes a base plate 30 and a pair of vertical plates 32, 32 erected on the base plate 30 and extending in a longitudinal direction. An inclined plate 38 is disposed between front inclined parts 32a, 32a of each of the vertical plates 32, 32. A lateral plate 40 and a rear plate 42 are disposed between rear inclined parts 32b, 32b of each of the vertical plates 32, 32, leaving an interval in the longitudinal direction. Furthermore, a reinforcement plate 44 is disposed between the rear inclined parts 32b, 32b of each of the vertical plates 32, 32, extending over the lateral plate 40, having a bottom surface connected to a top edge of the lateral plate 40, and having both side edges connected to an inner surface of each of the vertical plates 32, 32.

    【課題】作業腕装置やカウンタウエイト等から各縦板に作用する荷重に対する剛性が向上される建設機械の旋回フレームを提供する。【解決手段】旋回フレーム22は、底板30と、底板30上に立設され且つ前後方向に延びる一対の縦板32,32とを具備している。各縦板32,32の各前傾斜部32a,32a間には、傾斜板38が配設されている。各縦板32,32の各後傾斜部32b,32b間には、前後方向に間隔をおいて横板40及び後板42が配設されている。各縦板32,32の各後傾斜部32b,32b間には、更に、横板40を跨いで延在し且つ底面が横板40の上端に接合され、両側端が、夫々、各縦板32,32の内面に接合された補強板44が配設されている。【選択図】図3


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    Title :

    REVOLVING FRAME OF CONSTRUCTION MACHINE


    Additional title:

    建設機械の旋回フレーム


    Contributors:

    Publication date :

    2016-01-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B62D MOTOR VEHICLES , Motorfahrzeuge



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