PROBLEM TO BE SOLVED: To provide a crawler drive sprocket attachment structure for a drive shaft of a crawler traveling apparatus which makes it possible to lubricate a spline engagement part merely by replacing a drive sprocket attachment nut for a drive shaft of an existing crawler traveling apparatus.SOLUTION: A crawler drive sprocket 3 is spline-engaged with both ends of a drive shaft 1 projected to the right and the left from a transmission case, and the drive sprocket 3 is fixed to the drive shaft 1 using a castle nut 4 screwed to a male thread part 12 at an external end of the drive shaft 1. A round space 8 is formed between a distal end 31a of a bearing 31 of the drive sprocket 3 and the castle nut 4 by interposing an O ring 5 between the distal end 31a of the bearing 31 of the drive sprocket 3 and the castle nut 4. A lubricant passage 42 leading to a spline engagement part 11 via the round space 8 is formed in the castle nut 4, and a grease nipple 6 is disposed at an inlet of the lubricant passage 42.SELECTED DRAWING: Figure 2

    【課題】 既存のクローラ走行装置における駆動軸に対する駆動スプロケット取付ナットを交換するのみで、スプライン嵌合部への補脂が可能なクローラ走行装置の駆動軸に対するクローラ駆動スプロケット取付構造の提供。【解決手段】 ミッションケースから左右に突出させた駆動軸1の両端にクローラ駆動スプロケット3をスプライン嵌合させ、駆動軸1の外端の雄ネジ部12に螺合したキャスルナット4で駆動スプロケット3を駆動軸1に固定したものにおいて、駆動スプロケット3の軸受け先端面31aとキャッスルナット4の間にOリング5を備えることで駆動スプロケット3の軸受け部31の先端面31aとキャッスルナット4との間に円形の空間8を形成し、キャッスルナット4に円形の空間8を介してスプライン嵌合部11に通じる油路42を備え、該油路42の入り口にはグリスニップル6を備える。【選択図】 図2


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    Title :

    CRAWLER DRIVE SPROCKET ATTACHMENT STRUCTURE FOR DRIVE SHAFT OF CRAWLER TRAVELING APPARATUS


    Additional title:

    クローラ走行装置の駆動軸に対するクローラ駆動スプロケット取付構造


    Contributors:

    Publication date :

    2018-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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