Modular Performer Lift Height Adaptation via Segmentation
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Solution Overview
Problem
Conventional performer lifts are often too short for various stage settings, unsafe due to slow lifting speeds and potential hazards, and require replacement of components when adjusting height or speed.
Innovation Solution
A modular performer lift system comprising a base portion with a lifting mechanism and an extension portion that can be attached to adjust height, featuring a greaseless chain system driven by an AC servo motor, safety locking mechanism, and adjustable platform to ensure safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the performer lift height is increased by placing it on a box, then the height requirement is met, but safety is compromised
Solution Approach 1:
The performer lift is divided into modular components: a base portion containing the lifting mechanism and an extension portion that can be attached to increase height. This segmentation allows the lift to be configured for different heights while maintaining safety standards, as the lifting mechanism remains integrated and controlled rather than being externally supported on unstable platforms like boxes.
2Productivity
If the lifting mechanism speed is increased, then productivity is improved, but safety risks increase
Solution Approach 1:
The lifting mechanism incorporates a feedback control system with sensors that monitor the platform position, door status, and operational parameters. This feedback enables the system to adjust lifting speed dynamically - operating faster when safe and slowing down or stopping when safety conditions are not met, thus achieving both productivity and safety.
Solution Approach 2:
The lifting mechanism uses dynamic speed control rather than a fixed speed. The AC servo motor provides variable speed operation, allowing the system to optimize lifting speed based on real-time conditions while maintaining safety through controlled acceleration and deceleration profiles.
3Ease of manufacture
If standard size performer lifts are used, then manufacturing is simplified, but adaptability to different stage sets is reduced
Solution Approach 1:
The performer lift is divided into modular components: a base portion containing the lifting mechanism and an extension portion that can be attached to increase height. This segmentation allows the lift to be configured for different heights while maintaining safety standards, as the lifting mechanism remains integrated and controlled rather than being externally supported on unstable platforms like boxes.
Solution Approach 2:
The base portion with the integrated lifting mechanism serves multiple functions: it can support different extension portions to achieve various heights, accommodate different stage configurations, and maintain consistent safe lifting operations across all configurations. This universal design allows one base unit to serve multiple purposes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the performer lift to be adapted to different stage heights without replacing components, improving safety and speed, while preventing accidents by ensuring the door is closed before lifting and minimizing risks of entrapment.
Implementation Method 1
The motor may drive a reduction gearhead, which in turn may drive an axle. The axle may comprise chain gear portions arranged to engage the chain system.
Implementation Method 2
The lifting mechanism may comprise a motor assembly and a chain system connected to the platform, wherein the chain system is driven by the motor assembly.
Implementation Method 3
The means for controlling the height to which the platform is lifted may comprise a rotary limit switch. The safety locking mechanism may comprise a lever limit switch.
Implementation Method 4
The base portion may comprise a door, which may be pivotally attached to the frame of the base portion, preferably by a hinge.
Data Source
AI summary
A performer lift has abase portion (10) and an extension portion (12). The base portion (10) comprises a platform (16) and a lifting mechanism (18). The extension portion (12) is attachable to the base portion (10) to extend the height of the performer lift. The extension portion (12) allows a performer lift to be provided having a desired height. The performer lift can therefore be adapted to be used in different stage sets, by reusing the same base portion (10) and attaching different extension portions (12), having different heights.