Telescopic Site Light Arm for Stable Illumination on Uneven Terrain
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Solution Overview
Problem
Current mobile light systems for construction sites face challenges in adapting to uneven terrain and lack of external power sources, limiting their effectiveness in providing reliable illumination.
Innovation Solution
A site light with an adjustable telescopic arm and leg assembly, powered by a rechargeable battery system, and equipped with a cooling mechanism, allowing for flexible positioning and operation on uneven surfaces without external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mobile light system is designed for portability and flexibility, then it can be easily moved and positioned on construction sites, but it lacks stable support on uneven terrain and independent power supply
Solution Approach 1:
The light system employs adjustable legs that can be dynamically positioned and locked at different angles to adapt to uneven terrain. The legs transition between retracted and extended states, allowing the system to maintain stability while remaining portable. This dynamic adjustability resolves the contradiction by enabling the structure to change its configuration based on ground conditions.
Solution Approach 2:
The support structure is divided into separate, independently adjustable legs rather than a fixed base. Each leg can be individually positioned to compensate for terrain variations, providing stability without compromising portability. The segmentation allows each component to be optimized for its specific function while working together as a unified portable system.
2Length of moving object
If the arm length is extended to increase illumination range, then the light reaches farther areas, but the structure becomes less stable and harder to retract
Solution Approach 1:
The telescopic arm employs a nested tube structure where inner tubes slide within outer tubes. This nesting allows the arm to extend to increased lengths for broader illumination while maintaining a compact form for easy storage and transport. The nested design enables smooth extension and retraction by guiding the inner tubes through the outer tubes, reducing friction and mechanical complexity.
Solution Approach 2:
The arm features adjustable length capability, transitioning between extended and retracted states based on operational needs. This dynamic adjustability allows the arm to reach farther when required while being easily retractable for storage or relocation, resolving the contradiction between extended reach and ease of retraction.
3Reliability
If the crank arm rotation is restricted to one direction only, then the arm length increases reliably, but the drive mechanism lacks versatility for bidirectional control
Solution Approach 1:
The one-way rotation restriction is extracted as a separate functional element (ratchet or cam mechanism) from the overall drive system. This allows the crank to rotate bidirectionally when needed while providing one-way locking during extension operations. By separating the directional control function from the basic rotation capability, the system achieves both reliable unidirectional extension and versatile bidirectional control.
Data Source
AI summary
A site light including a body, an arm coupled to the body having an adjustable arm length, a light assembly coupled to the arm opposite the body, and a drive assembly configured to alter the arm length. The drive assembly, in turn, includes a drive wheel mounted for rotation with respect to the body, an idle wheel mounted for rotation with respect to the body, and a biasing member configured to bias the idle wheel toward the drive wheel. The site light also includes a cable coupled to the arm where the cable is positioned between and engaged by both the drive wheel and the idle wheel.