Telescopic Task Tray Assembly for Adjustable MEWP Work Surfaces
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Solution Overview
Problem
Current mobile elevated work platforms (MEWPs) lack a suitable, adaptable, and safe horizontal work surface, leading to inefficiencies, musculoskeletal disorders, and a high incidence of dropped-object accidents due to cluttered and unsafe working conditions on the floor, with existing accessories being unsuitable for commercial and industrial use.
Innovation Solution
A task tray with an adjustable subframe that fits between and attaches to the top guardrails of scissor and boom lifts, featuring a durable aluminum construction, stainless steel snap-lock buttons, industrial hook and loop closure, and a carrying handle, designed to provide a secure, ergonomic, and adjustable work surface capable of supporting 100 pounds, addressing the need for a versatile and safe working area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-size task tray is used, then the structure is simple and easy to manufacture, but it cannot adapt to different MEWP platform sizes and configurations
Solution Approach 1:
The task tray employs a telescopic mechanism with multiple extendable sections that can be adjusted to different lengths and positions. This dynamic structure allows the tray to adapt to various MEWP platform sizes and configurations while maintaining a relatively simple overall design when retracted
Solution Approach 2:
The task tray is divided into multiple telescopic sections that can independently extend and retract. This segmentation allows the structure to adapt to different platform widths while keeping each individual section simple in design and easy to manufacture
2Ease of operation
If tools and objects are placed on the floor of the MEWP, then no additional structure is needed, but this leads to cluttered conditions, musculoskeletal disorders, and dropped-object accidents
Solution Approach 1:
Instead of placing tools on the horizontal floor surface, the task tray utilizes the vertical space by attaching to the guardrails. This dimensional transition creates an elevated working surface that improves ergonomics by reducing bending and twisting while maintaining operational simplicity
3Ease of operation
If improvised plywood supports are placed across the rails, then a working surface is provided, but this creates frequent dropped-object and tip-over incidents
Solution Approach 1:
The task tray is designed with self-contained attachment mechanisms including telescopic sections that fit between the rails and locking features that secure the structure. This self-service design eliminates the need for improvised plywood supports while providing a stable, safe working surface that prevents dropped-object incidents
Data Source
AI summary
A telescopically adjustable task tray for mobile elevated work platforms is disclosed. The task tray assembly may be used on most standard sized scissor and boom lift mobile elevated work platforms (MEWP's). It provides easy, fast (under one minute) installation, a convenient work surface, a contained space for placing tools and other items, an ideal surface for assembly, and primarily, an alternative to the old practice of working from the platform floor. The invention is not limited to use on mobile elevated work platforms. It could be used on industrial catwalks, mechanical chases, between two sawhorses, anywhere two horizontal bearing points are available within the telescopic range. The invention could also be modified yet still meet the original scope of the invention.