| 摘要 |
A camera crane mobile base has a drive motor assembly at each corner of a chassis. The drive motor assemblies may have an electric motor linked to an axle via gearing, and one or more wheels attached to the axle. The electric motors may be separately controlled to propel and steer the mobile base. A column is pivotally attached to the chassis and pivotal in lateral and longitudinal directions via actuators. The drive motor assemblies may be removed from the chassis for storage or transport. With the drive motor assemblies installed, the mobile base is highly stable and maneuverable. With the drive motor assemblies removed, the chassis is narrow enough to fit through a typical doorway. Steering systems may be linked to the drive motor assemblies at the front and/or rear of the chassis, to allow steering control of the mobile base in corrective, crab and/or round steering modes. The chassis may optionally have an upward curvature from either end towards the center location. |
