| 摘要 |
PURPOSE:To aim at improvements in drivability and stabilization in tractive force, by constituting a wheel in a way of installing a lug being long in an orthogonal direction to a circumferential direction of a circular rim but small in a grounding area and another lug being long in the circumferential direction and large in the grounding area. CONSTITUTION:A lug 2 is projected toward the outside from a circular rim 1 to be long in both circumferential and orthogonal directions of a rim and provided with a grounding part 4 small in a grounding area. And, a lug 3 is formed as one body with the inside of the lug 2 and long in the circumferential direction of the rim 1, having a grounding part 5 large in the grounding area. Each of cavities is installed inside these lugs 2 and 3. With this constitution, the grounding part 4 positively cuts in the ground, bringing tractive force into full play, while the grounding part 5 checks any thrust into soft ground, thus its proper tractive force is brought into full play as well. |
