To provide a travel device of a self-propelled machine, which can provide enhanced discharging efficiency of discharging foreign matters such as sediments entering a clearance between a fixed housing and a rotary housing from the clearance.SOLUTION: An outer ring part 22 of a travel device includes plural seal portions 31 and 32 disposed circumferentially at intervals in a state in which recessed portions 34 are respectively disposed between the seal portions. The plural seal portions 31 and 32 include: first seal portions 31 having first inner surfaces radially separated from and located opposed to an outer circumferential surface of an inner ring part 12; and second seal portions 32 having second inner surfaces radially separated from and located opposed to the outer circumferential surface of the inner ring part 12. The second seal portions 32 include enlarged portions 321, and a clearance in a radial direction between the second inner surfaces at the enlarged portions 321 and the outer circumferential surface of the inner ring part 12 is larger than a clearance in the radial direction between the first inner surfaces of the first seal portions 31 and the outer circumferential surface of the inner ring part 12.SELECTED DRAWING: Figure 6

    【課題】固定ハウジングと回転ハウジングとの間の隙間に入り込んだ土砂等の異物を隙間から排出する排出性能を向上させることができる自走機械の走行装置を提供する。【解決手段】走行装置の外側リング部22は、凹部34を挟んで互いに周方向に間隔をおいて配置される複数のシール部31,32を有し、複数のシール部31,32は、内側リング部12の外周面に対して径方向に隙間をあけて対向する第1内面を有する第1シール部31と、内側リング部12の外周面に対して径方向に隙間をあけて対向する第2内面を有する第2シール部32と、を含み、第2シール部32は拡大部321を有し、拡大部321における第2内面と内側リング部12の外周面との径方向の隙間は、第1シール部31の第1内面と内側リング部12の外周面との径方向の隙間よりも大きい。【選択図】図6


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    Title :

    TRAVEL DEVICE OF SELF-PROPELLED MACHINE


    Additional title:

    自走機械の走行装置


    Contributors:

    Publication date :

    2020-06-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16J Kolben , PISTONS




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