| 摘要 |
PURPOSE:To prevent a wheel from being derailed from a caterpillar due to a clawler guide, by providing such an arrangement that an arm base end section which supports the guide section of the crawler guide is journlled rotatably to a crawler frame. CONSTITUTION:A crawler guide 5 is formed with an axially cylindrical shaft support part 52 in the top end section of an arm 51 for supporting a guide section 50 which is fitted into a track between projections on the inner surface of a caterpillar 1. This shaft support part 52 is fitted in a shaft support W formed in the rear-half section of a adjusting screw rod 61. The axially cylinderical shaft support part is rotated together with the screw rod 61 in the same direction when the screw rod 61 is rotated. Thereby, the crawler guide 5 laterally swings so that the relative position between the guide section 50 of the crawler guide 5 and the final rollining wheel may be maintained constant to prevent the wheel from being derailed from the caterpillar. |
