A rotating and lifting stage is a piece of stage equipment that integrates both lifting and rotating functions. Its structure comprises various components, including a drive system and a support system.
Rotating drive mechanisms generally fall into four categories: friction wheel drives, steel cable traction drives, rotor drives, and gear drives. The friction wheel drive is one of the most commonly utilized methods for rotating stages; it operates by employing a rotary actuator to drive the friction wheels, which in turn induce the rotation of the stage platform. This method is characterized by low noise levels. In the context of combined lifting and rotating stages, the rotational motion is often achieved by utilizing a cycloidal pin-wheel reducer to drive the friction wheels.
Regardless of whether the stage features a disc-type or cylinder-type central structure, the central point itself is not designed to bear any load. The weight of the stage is typically distributed across wheels positioned along the periphery; these wheels are either mounted directly onto the rotating structure or supported by guide rails anchored to the ground.
One specific structural design for a rotating and lifting stage includes a base platform, hydraulic cylinders, support columns, a drive motor, and a gear transmission mechanism. The hydraulic cylinders are utilized to actuate the vertical lifting and lowering of the support columns, while the drive motor powers the gear transmission mechanism to facilitate the rotation of the stage platform. An alternative design for a rotating and lifting stage employs a dual-rail support system - consisting of both inner and outer rails - and achieves rotation through the use of drive plates and drive wheels, thereby avoiding the use of gears in order to minimize noise.