Adjustable Striping Roller Assembly for Lawn Mower Deck
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Solution Overview
Problem
Existing lawn striping assemblies are often fixed to the mower deck, limiting adjustability and requiring significant effort to attach/detach, and struggle to maintain effective striping across varying grass types and deck heights, leading to inconsistent results.
Innovation Solution
An adjustable striping roller assembly with a mounting bracket, pivotally mounted roller arm, height-adjusting rod, and spring-loaded U-shaped connection member, allowing for customizable height settings and independent operation from the mower deck, ensuring consistent striping across different grass types and deck heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the striping assembly is fixed to the mower deck, then the structure is simple and easy to manufacture, but the striping assembly cannot adjust independently from the cutting deck, limiting its adaptability to different cutting heights and grass types
Solution Approach 1:
The striping roller assembly is made dynamically adjustable through a pivoting roller arm mechanism that allows the striping roller height to be changed independently of the cutting deck height. The roller arm can pivot to different positions, enabling the striping roller to adapt to various cutting heights and grass types while maintaining a relatively simple overall structure.
Solution Approach 2:
The striping assembly is segmented into independent components: a mounting bracket fixed to the mower deck, a pivotally mounted roller arm, and a height-adjusting mechanism. This segmentation allows the striping roller to adjust independently from the cutting deck, providing adaptability without significantly increasing overall structural complexity.
2Adaptability or versatility
If the striping roller height is fixed relative to the cutting deck, then the structure is simpler, but the pitch of the deck is negatively affected when cutting height changes or grass consistency varies
Solution Approach 1:
The roller arm is designed to pivot dynamically, allowing the striping roller height to be adjusted independently when cutting height changes or when dealing with different grass types. This dynamic adjustment capability maintains consistent striping effects without affecting the deck pitch, as the striping roller can adapt to various conditions while the cutting deck remains stable.
3Reliability
If the striping assembly requires significant effort and additional tools to attach/detach, then the connection is more secure, but the ease of operation is reduced
Solution Approach 1:
The striping assembly is designed as a segmented, modular unit that can be easily attached to and detached from the mower deck. The mounting bracket and roller arm are separate components that can be quickly connected and disconnected without requiring additional tools, providing both secure attachment and ease of operation.
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 solution provides a customizable and efficient striping mechanism that maintains consistent grass deformation across varying grass types and deck heights, reducing effort in attachment and detachment, and protecting the striping roller during deck height changes or rough terrain.
Implementation Method 1
A biasing member is positioned such that one end of the biasing member rests against the lower leg of the U-shaped connection member and the other end of the spring rests against the underside of the top arm of the bracket such that the biasing member acts upon the U-shaped connection member causing the upper leg to be biased toward the upper surface of the top arm of the bracket and forcing the striping roller downward with respect to the mower deck.
Data Source
AI summary
A lawn mower has a striping roller assembly rotatably attaching a striping roller to a mower deck of the lawnmower. The striping roller assembly includes a mounting bracket connected to the mower deck, the bracket having a top arm that extends from the mower deck in a generally horizontal direction. A roller arm is pivotally mounted on the bracket at a pivot connection. A height adjusting rod attaches to the pivoting roller arm to permit the operator to select different height settings for the striping roller assembly, wherein the height adjusting rod passes through an opening in the top arm of the bracket and is slidable relative to the bracket. A U-shaped connection member having upper and lower legs is positioned such that the upper leg is above and the lower leg is below the top arm of the bracket. A spring biases the U-shaped connection member so that the upper leg is forced toward or against the upper surface of the top arm of the bracket. The assembly further includes a collar on the upper leg, wherein an upper end of the height adjusting rod has a plurality of height-adjustment holes passing through the rod and the collar also has a hole, wherein one of the holes in the rod is aligned with the hole in the collar and a pin is inserted through the holes to fix the collar to the height adjusting rod.