Segmented Pallet Truck Arms for Cleanroom Hygiene
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Solution Overview
Problem
Pallet trucks used in clean environments like clean rooms and laboratories often contaminate goods and are difficult to clean, as contaminants can adhere to their surfaces and accumulate in hard-to-reach areas, necessitating additional protective coverings that need frequent replacement.
Innovation Solution
The pallet truck design features two parallel longitudinal arms with visible and accessible surfaces for easy cleaning, eliminating the need for additional coverings and reducing dirt accumulation by ensuring all areas are accessible, thus preventing contamination and simplifying maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional pallet truck frames are used, then the structural integrity and lifting function are maintained, but contaminating substances adhere to the surfaces and accumulate in hard-to-reach areas, causing contamination of clean environments
Solution Approach 1:
The frame is divided into two substantially parallel longitudinal arms, each comprising two parallel longitudinal extensions that define spaces between them. This segmentation creates multiple accessible surfaces that can be individually cleaned, eliminating hard-to-reach areas where contaminants would accumulate.
Solution Approach 2:
The design removes enclosed or hidden surfaces from the frame structure, ensuring all surfaces are exposed and accessible. By opening up the frame into parallel extensions with defined spaces, the invention extracts the problem of inaccessible cleaning areas, allowing complete cleaning of all surfaces without requiring disassembly or special tools.
2Object-affected harmful factors
If protective coverings are added to prevent contamination, then the frame is protected from dirt, but the device complexity increases and the coverings need frequent replacement
Solution Approach 1:
The frame design is self-cleaning in the sense that all surfaces are made accessible and visible for routine cleaning without requiring additional protective coverings. The structure serves its own cleaning needs through its open geometry, eliminating the need for separate protective elements that would themselves require maintenance and replacement.
3Strength
If enclosed frame structures are used, then structural strength is maintained, but dirt accumulates in areas that cannot be inspected visually or accessed for cleaning
Solution Approach 1:
The frame is segmented into parallel longitudinal extensions that define spaces between them, creating a structure where all surfaces are externally exposed. This segmentation maintains structural integrity through the parallel arm configuration while ensuring every surface is visible and accessible for inspection and cleaning, eliminating hidden areas.
Solution Approach 2:
The frame transitions from a potentially enclosed three-dimensional structure to an open configuration where all critical surfaces are accessible from the top dimension. The parallel extensions are arranged so that cleaning can be performed from above, adding the dimension of accessibility that eliminates hidden surfaces while maintaining structural strength.
Data Source
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AI summary
Pallet truck for transporting goods, comprising a substantially horizontal frame (1) on which the goods to be transported are placed, and which comprises two substantially parallel arms (10, 11). Each arm (10, 11) comprises two parallel longitudinal extensions (101, 102) that define a space (12) between them, comprising two walls (103, 104) that face each other and which are visible and accessible through said space (12), said longitudinal extensions (101, 102) being visible and accessible from above for cleaning.