Mower Deck Adjustable Linkages for Fast Cutting Height and Rake Changes
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Solution Overview
Problem
Existing height of cut and rake adjustment systems for golf course mowers are cumbersome and time-consuming, requiring tools for adjustment and not suitable for fast and efficient changes in cutting height and rake angle.
Innovation Solution
A modular height of cut and rake adjustment system using adjustable linkages that connect to the front and rear height of cut arms, allowing manual adjustment without tools, and enabling quick changes in cutting height and rake angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional height of cut and rake adjustment systems are used, then the mower can maintain cutting height and rake angle, but the adjustment process is cumbersome and time-consuming
Solution Approach 1:
The adjustment system uses a dynamic linkage mechanism with movable connection points that allow continuous adjustment of height of cut and rake angle. The linkage includes a first link connecting the lift arm to the deck, and a second link connecting the first link to the deck, with connection points that can be repositioned along the components to achieve different cutting parameters.
Solution Approach 2:
The adjustment system is divided into separate adjustable components: the first link, the second link, and the connection points on each. This segmentation allows independent adjustment of each link's length and position, enabling fine-tuned control over height of cut and rake angle without affecting other parts of the mower.
2Adaptability or versatility
If traditional adjustment mechanisms with multiple holes and spacers are used, then height of cut can be adjusted, but the process requires tools and is time-consuming
Solution Approach 1:
The system replaces static adjustment holes with dynamic, continuously adjustable linkage connections. The connection points can be moved to any position along the links, providing infinite adjustment possibilities rather than discrete hole positions, thereby reducing the need for multiple spacers and complex locking mechanisms.
Solution Approach 2:
The invention extracts and eliminates unnecessary components from traditional adjustment systems, such as multiple spacers, complex hole patterns, and tool-dependent locking mechanisms. The simplified linkage system achieves the same adjustment functionality with fewer parts, reducing overall device complexity.
3Reliability
If thick sheet steel is used for rotary cutting decks to withstand shocks, then durability is improved, but weight increases
Solution Approach 1:
The patent changes the material parameter from thick sheet steel to a composite structure incorporating foam core material. This parameter change maintains structural durability by providing shock absorption and rigidity while significantly reducing the weight of the cutting deck, improving the mower's overall performance and maneuverability.
Data Source
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AI summary
A height of cut and rake adjustment system (105) for a rough, trim and surround mower deck (100) with a pair of front height of cut arms (113) and a pair of rear height of cut arms (114). Each height of cut arm is pivotably mounted to the mower deck on a pivot axis below an upper end of each height of cut arm. An adjustable height of cut linkage (138) extends between the upper end (118) of each front height of cut arm and the upper end (119) of each rear height of cut arm. An adjustable rake linkage (146) extends between the upper end of each front height of cut arm and an intermediate portion of each rear height of cut arm below the pivot axis (123).