To provide a track roller movable support mechanism of a crawler traveling apparatus capable of reducing a maintenance cost by giving priority to replacement of an inexpensive washer and elongating the replacement timing of a rocking track roller.SOLUTION: A lower side shaft bearing part 21a included in a rocking arm 21 that is supported by a track frame 11 of a crawler traveling apparatus 1 so that the rocking arm can freely vertically move is provided with a washer receiving part 25 with a track roller shaft bearing length L held from the shaft end. The washer receiving part 25 restricts an inward movement of an inside washer 26 engaged with the lower side shaft bearing part 21a. The track roller shaft bearing length L is made slightly larger than a layer width of a track roller boss 15a, the inside washer 26, and an outside washer 27 which are engaged with the lower side shaft bearing part 21a. An accompanying rotation deriving from abutment on the track roller boss 15a is permitted. Further, at least the inside washer 26 is made of a synthetic resin.SELECTED DRAWING: Figure 6
【課題】揺動転輪の交換時期を伸ばし、安価なワッシャの交換を優先させることにより、メンテナンスコストを低減できるクローラ走行装置の転輪可動支持機構を提供する。【解決手段】クローラ走行装置1のトラックフレーム11に上下動自在に支持される揺動アーム21が備える下部側軸支部21aに、その軸端から転輪軸支長Lを有してワッシャ受け部25を設け、該ワッシャ受け部25によって下部側軸支部21aに嵌挿する内側ワッシャ26の内方側移動を規制すると共に、上記転輪軸支長Lを下部側軸支部21aに嵌挿される転輪ボス部15aと内側ワッシャ26と外側ワッシャ27との重ね幅よりやや大きくして転輪ボス部15aとの接当による連れ回り回動を許容させ、且つ少なくとも内側ワッシャ26を合成樹脂によって形成する構成にしている。【選択図】図6
TRACK ROLLER MOVABLE SUPPORT MECHANISM OF CRAWLER TRAVELING APPARATUS
クローラ走行装置の転輪可動支持機構
2019-05-30
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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