| 摘要 |
PURPOSE:To increase a tractive force on a muddy ground, by forming an inverted V-shaped projection that projects inwardly between adjacent lugs at both side portions of a crawler. CONSTITUTION:A body portion 11 of a crawler consists of a central portion 15 and both side portions 16. Inner circumferential surfaces 16' of the both side portions 16 corresponding to lugs 12 is flush with an inner circumferential surface 15' of the central portion 15. Slits 17 are formed near the border between the central portion 15 and the both side portions 16 to form blade members 18. The blade members 18 are curved inwardly to form inverted V-shaped projections 19 between adjacent lugs 12 at the both side portions 16. A grounding outer surface 19'' at a top portion of the projection 19 is positioned more inside than the inner circumferential surface 15' of the central portion 15. |
