| 摘要 |
The present invention relates to a movable hoist crane which is driven in a rail by wheels for a rail by simultaneously installing moving units applied to a flatland and a rail to form a selective driving relationship, and is driven in a road where the rail is not formed by tire wheels to enable movement in a wide range of geographical conditions. When the wheels are connected to the crane, a rotary shaft is formed in a direction vertical to the moving direction of the crane to allow the wheels to move in a flat road and to be inclined in a curved inclined surface, thereby the wheels come in contact with the road without separation. Therefore, the present invention improves driving performance and safety. |
