PROBLEM TO BE SOLVED: To reduce risk of breakage even when a rock or other contaminant is sandwiched between a tension wheel and a crawler belt.SOLUTION: A crawler travel device comprises: a support shaft 48 which extends in a cantilever state toward a lateral outside from a tension frame 47 which is supported to a truck frame 28 so that a front and rear position of the tension frame 47 can be changed, and which rotatably supports a tension wheel via a bearing 49; and a position adjusting mechanism 50 for freely changing the front and rear position of the tension frame 47 to the truck frame 28. On a position on the tension frame 47 side rather than the bearing 49 on the support shaft 48, a collar member is externally fitted in a state in which it is positioned between the support shaft 48 and a boss part 57 of the tension wheel. The collar member is disposed to project the tension frame side relative to the tension frame 47 side end part of the boss part 57.SELECTED DRAWING: Figure 4

    【課題】緊張輪とクローラベルトとの間に石や他の夾雑物が挟み込まれる等の異常が発生しても、損傷のおそれを少なくする。【解決手段】トラックフレーム28に対して前後位置変更自在に支持されるテンションフレーム47から横側外方に片持ち状に延設され且つ緊張輪をベアリング49を介して回動自在に支持する支軸48と、トラックフレーム28に対するテンションフレーム47の前後位置を変更調整自在な位置調整機構50とを備え、支軸48のうちベアリング49よりもテンションフレーム47側箇所において、支軸48と緊張輪のボス部57との間に位置する状態でカラー部材が外嵌装着され、カラー部材は、ボス部57のテンションフレーム47側端部よりもテンションフレーム側に突出する状態で備えられている。【選択図】図4


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    Title :

    CRAWLER TRAVEL DEVICE


    Additional title:

    クローラ走行装置



    Publication date :

    2016-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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