ROLLER SUPPORT STRUCTURE

To provide a roller support structure that is able to prevent leakage of a lubricant from an end of a support shaft and is easily disassembled and assembled.SOLUTION: A roller support structure (20) includes: a support shaft (21) supported by a side frame of a work machine; and a roller (22) rotatab...

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Bibliographische Detailangaben
Hauptverfasser:	NAGASE HIROYUKI, HAYASHI SHINICHI, SHIRATSURU YUKI, OHAMA YUJI, NOHARA TAKURO, SEKIGUCHI YOSHIAKI, NAKATA RYOGA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MOTOR VEHICLES PERFORMING OPERATIONS TRAILERS TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide a roller support structure that is able to prevent leakage of a lubricant from an end of a support shaft and is easily disassembled and assembled.SOLUTION: A roller support structure (20) includes: a support shaft (21) supported by a side frame of a work machine; and a roller (22) rotatably supported by the support shaft (21) and configured to guide a crawler belt wound around the side frame to rotate. An oil reservoir (21c) for storing a lubricant is formed between the support shaft (21) and the roller (22). This structure is provided with a sealing member (25) that seals an end of the support shaft (21) across a gap (31b, 31c) in which an oil film is formed by the lubricant supplied from the oil reservoir (21c).SELECTED DRAWING: Figure 5 【課題】支軸の端部からの潤滑油の漏れ出しを防止すると共に、分解及び組立が容易なローラ支持構造体を提供する。【解決手段】ローラ支持構造体（２０）は、作業機械のサイドフレームに支持される支軸（２１）と、支軸（２１）に回転可能に支持されて、サイドフレームに巻回されて周回する履帯を案内するローラ（２２）とを備え、支軸（２１）及びローラ（２２）の間に潤滑油を貯留する油溜まり（２１ｃ）が形成された構造体において、油溜まり（２１ｃ）から供給される潤滑油によって油膜が形成される間隙（３１ｂ、３１ｃ）を隔てて支軸（２１）の端部を封止する封止部材（２５）を備える。【選択図】図５