Platform Extension Axle Assembly for Backlash-Stable Movement
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Solution Overview
Problem
Extendible platforms in propulsion lifts experience significant horizontal backlash, leading to instability and safety hazards due to side-to-side movements, requiring tedious and inconvenient adjustments to cams underneath the platform.
Innovation Solution
A platform extension mechanism comprising a bumper, rolling bearing, and axle, where the axle has a slot to receive the bumper and supports the rolling bearing, allowing it to move along a structural channel, reducing backlash and providing stability through a coaxial arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the platform is made extendible to enable tasks like powertrain component separation, then the platform's adaptability and functionality are improved, but horizontal backlash increases causing side-to-side movements that reduce stability and create safety hazards
Solution Approach 1:
The patent introduces intermediate components (bumper, rolling bearing, axle assembly) between the platform and structural channel to mediate the connection. The rolling bearing acts as a mediator that allows controlled movement while maintaining stability, and the bumper serves as an intermediary element that contacts the structural channel to prevent excessive side-to-side movement, thus resolving the contradiction between extendibility and stability
2Stability of the object's composition
If traditional cam adjustments are made underneath the platform to eliminate side-to-side play, then platform stability is improved, but the ease of operation deteriorates due to tedious adjustments and inconvenient positioning
Solution Approach 1:
The patent inverts the traditional adjustment approach by moving the adjustment mechanism from underneath the platform to the top side. The axle assembly with the bumper and rolling bearing is positioned above the platform, allowing operators to access and adjust the mechanism from a convenient position rather than requiring positioning underneath the platform, thus resolving the contradiction between stability and ease of operation
3Device complexity
If the platform extension mechanism uses a simple structure, then the device complexity is reduced, but the ability to control backlash and ensure stable operation deteriorates
Solution Approach 1:
The patent segments the extension mechanism into distinct functional components: the axle assembly, bumper, rolling bearing, and adjustment mechanism. Each component performs a specific function - the rolling bearing handles movement, the bumper controls backlash, and the adjustment mechanism fine-tunes the position. This segmentation allows the system to achieve reliable backlash control without excessive overall complexity, as each segment is relatively simple but collectively they provide robust performance
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
The mechanism stabilizes the platform by reducing side-to-side movement and backlash, enabling smooth extension and adjustment without the need for inconvenient adjustments underneath the platform, enhancing safety and ease of use.
Implementation Method 1
The shaft portion has a peripheral portion that is structured to support the rolling bearing at a designated location along the first axis and enable the rolling bearing to move along the structural channel
Data Source
AI summary
A platform extension mechanism includes at least a bumper, a rolling bearing, an adjuster, and an axle. The axle has a first end surface and a second end surface. The axle is elongated along a first axis. The axle includes interior wall portions that define a slot from the first end surface to the second end surface. The axle is structured to receive the bumper and the adjuster via the slot. The axle is structured to support the bumper and the adjuster in relation to a platform and a structural channel. The axle includes a mounting portion and a shaft portion. The mounting portion has a flange with a first side and a second side. The first side of the flange is mountable to a sidewall portion of the platform. The shaft portion protrudes outward from the second side of the flange. The shaft portion has a peripheral portion that is structured to support the rolling bearing at a designated location along the first axis and enable the rolling bearing to move along the structural channel. The shaft portion is structured to support the bumper and the rolling bearing in a coaxial arrangement. The adjuster is aligned with the bumper and configured to adjust a position of the bumper along the first axis of the axle.