Mower Deck Gauge Wheel Adjustment via Grooved Post and Latch

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Solution Overview

Problem

Existing mower deck gauge wheel adjustment mechanisms for large multi-blade mower decks are costly, complex, and lack finely spaced height increments, which compromises grass cut quality.

Innovation Solution

A mower deck gauge wheel adjustment mechanism featuring a sleeve-shaped support with a vertical bore, a post with horizontal grooves, and an L-shaped wire form latch that allows for precise height adjustments with reduced parts and complexity, enabling closely spaced height increments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional adjustment mechanisms are used, then the mower deck can be adjusted to different heights, but the cost and manufacturing complexity increase

Engineering Contradiction:
Improveheight adjustment precisionVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The post is segmented with multiple horizontal grooves at different heights, allowing the latch to engage at discrete height levels. This segmentation provides precise height adjustment while keeping the overall structure simple and cost-effective.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The latch is made as a simple, inexpensive wire form component that can be easily manufactured and replaced if needed. This approach reduces the cost of the adjustment mechanism while maintaining functionality.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Manufacturing precision

If traditional adjustment mechanisms are used, then height adjustment is possible, but the number of parts and manufacturing complexity increase

Engineering Contradiction:
Improveheight adjustment precisionVSAvoidmanufacturing simplicity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The support structure integrates the vertical bore, horizontal latch hole, and positioning features into a single sleeve-shaped component. This merging of functions reduces the total number of parts and simplifies manufacturing while providing precise height adjustment through the grooved post and latch mechanism.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If traditional adjustment mechanisms are used, then gauge wheel height can be changed, but part movement and mechanical complexity increase

Engineering Contradiction:
Improveheight adjustment rangeVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The latch mechanism allows dynamic adjustment of the gauge wheel height by engaging different horizontal grooves on the post. The wire form latch can be easily moved between engaged and disengaged states, providing adaptability for height adjustment while maintaining a simple mechanical structure with minimal moving parts.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10609863B2Mower deck gauge wheel adjustment mechanism
Publication Date: 2020.04.07 DEERE & CO
  • US10609863B2 patent drawing
  • US10609863B2 patent drawing
  • US10609863B2 patent drawing

AI summary

A mower deck gauge wheel adjustment mechanism includes a support attached to a multi-blade mower deck having a vertical bore. A post is welded to a yoke holding a gauge wheel, and includes a plurality of horizontal grooves, and may be inserted through the vertical bore and positioned at a selected gauge wheel height. A horizontal latch hole may be provided through the support and has a diameter that overlaps the vertical bore. A latch may be inserted through the latch hole, with a first side that engages one of the horizontal grooves when the latch is pivoted downwardly to an engaged position.