Floating Grinding Head Assembly for Uneven Floor Preparation
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Solution Overview
Problem
Existing surface preparation technologies face challenges in efficiently handling uneven surfaces, leading to tool wear and potential damage, and are often too large to navigate through standard commercial door openings, limiting their use in interior spaces.
Innovation Solution
A motor-powered wheeled vehicle with a surface preparation tool that features a grinding head assembly capable of floating and rotating over uneven surfaces, connected via a tool bar that allows lateral adjustment and quick tool changes, enabling smooth operation and access through narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional walk-behind surface preparation machine is used, then the machine can operate on uneven surfaces, but the machine causes excessive tool wear and potential damage due to grinding large chunks of surface
Solution Approach 1:
The surface preparation tool is designed with floating capability that allows it to dynamically adapt to uneven surfaces. The tool can move up and down vertically and rotate about two separate axes (front-to-back and side-to-side), enabling it to follow surface contours rather than forcing the surface to conform to the tool, thereby preventing excessive tool wear while maintaining efficient surface preparation
Solution Approach 2:
The patent changes the operational parameters of the surface preparation tool by allowing vertical floating movement and multi-axis rotation. This transforms the tool from a rigid, fixed-position device to one with multiple degrees of freedom, enabling it to maintain optimal contact with uneven surfaces without causing damage to the tool or excessive material removal
2Power
If a ride-on surface preparation apparatus with large width is used, then the apparatus provides powerful surface preparation capability, but the apparatus cannot pass through standard commercial door openings
Solution Approach 1:
The surface preparation tool incorporates floating and rotating capabilities that allow it to dynamically navigate around obstacles and through tight spaces. The tool can rotate about two separate axes and float vertically, enabling the ride-on apparatus to maneuver through standard commercial door openings (approximately 36 inches wide) while maintaining its powerful surface preparation capability
3Reliability
If a fixed-position surface preparation tool is used, then the tool structure is simple, but the tool cannot adapt to uneven surfaces and causes excessive wear
Solution Approach 1:
The patent implements a floating surface preparation tool that can move vertically and rotate about two separate axes. This dynamic design allows the tool to automatically adapt to uneven surfaces without requiring complex active control systems. The floating mechanism provides passive adaptation through gravitational and operational forces, maintaining reliability while avoiding excessive structural complexity
Solution Approach 2:
The surface preparation tool is designed with multi-axis rotation and floating capabilities that enable it to handle various surface conditions and orientations. This universal design allows a single tool configuration to adapt to different uneven surface scenarios without requiring multiple specialized tools or overly complex adjustment mechanisms
Data Source
AI summary
A surface preparation apparatus has a drive-on wheeled vehicle with a surface preparation tool attached thereto. The surface preparation tool can move vertically and can rotate about two separate axes relative to the wheeled vehicle. The surface preparation tool therefore can float over the contour of a floor being treated.