Adjustable Mower Deck Linkage for Single-Action Height Control
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Solution Overview
Problem
Adjusting the height of commercial mower decks is time-consuming and complicated, requiring manual adjustment of multiple bolts and ensuring the deck remains level, which can be challenging, especially with multiple mower decks.
Innovation Solution
A linkage system with rotating shafts and coupling mechanisms allows for simultaneous adjustment of the mower deck height, ensuring equal increments and maintaining deck levelness with a single action, using rolling mechanism support arms and an actuator to pivot the arms in unison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wheels or rollers are bolted to the deck at fixed vertical positions and adjusted by removing/loosening bolts, then the height of the mower deck can be changed, but the adjustment process becomes time-consuming and complicated
Solution Approach 1:
The patent transforms the static bolted connection system into a dynamic linkage system. The support arms are connected via linkages that allow continuous movement and adjustment without requiring bolt removal. The system transitions from discrete fixed positions to a continuously adjustable mechanism where the support arms can pivot smoothly to change deck height.
Solution Approach 2:
The mower deck is divided into modular components: the main deck body, multiple support arms (front and rear), and linkage mechanisms. Each support arm can be independently adjusted through the linkage system, allowing segmented adjustment of different parts of the deck to achieve level positioning while simplifying the overall adjustment process.
2Adaptability or versatility
If the wheels or rollers are adjusted to change deck height, then the cutting length can be varied, but ensuring the mower deck remains level becomes critical and complicates the process
Solution Approach 1:
The linkage system provides mechanical feedback between the support arms. When one support arm is adjusted, the linkage mechanism automatically adjusts the other arms to maintain proper geometric relationships, ensuring the deck remains level. The interconnected nature of the linkages creates a self-correcting system that maintains deck alignment during adjustment.
Solution Approach 2:
The linkage mechanism employs asymmetric arm configurations with different arm lengths and pivot point positions. This asymmetric design allows the system to compensate for variations in wheel/roller positions and maintain deck levelness despite the adjustable nature of the support arms. The specific geometric arrangement of the linkages ensures proper force distribution and alignment.
Data Source
AI summary
A mower deck can include a linkage that enables adjusting the height of the mower deck with a single action. The mower deck can include a rolling mechanism support arm at each corner and a coupling mechanism that extends between the front and rear rolling mechanism support arms on each side of the mower deck. A shaft can extend between the two front rolling mechanism support arms and can be rotated via an actuator. When the shaft is rotated, the front rolling mechanism support arms will rotate in unison, and the coupling mechanisms will cause the rear rolling mechanism support arms to also rotate in unison. In this way, a single action can cause the height of the mower deck to be adjusted.