Mowing Machine Drive Train Rerouting for Crop Clearance

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Solution Overview

Problem

Existing mowing machines face space constraints and crop collision issues due to the branching of the drive train to downstream units, making maintenance difficult and affecting efficiency.

Innovation Solution

The drive train is rerouted from one side of the mower unit to the opposite side, with input and coupling gears positioned on different sides to avoid space restrictions and improve accessibility, using a belt or chain drive stage for efficient power transmission to downstream units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the drive train is branched off from the input gear to drive the following unit, then the drive efficiency is improved and structure is simplified, but space constraints and crop collision issues occur

Engineering Contradiction:
Improvedrive efficiencyVSAvoidspace constraints
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

The drive train is routed from the inside of the mower unit to the outside, transitioning the drive path to a different spatial dimension. This allows the drive components to be positioned where they do not interfere with the crop swath, resolving the space constraint and collision issues while maintaining drive efficiency

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If the input gear and coupling gear are positioned on the same side of the mower unit, then the drive train structure is compact, but maintenance accessibility is difficult

Engineering Contradiction:
Improvedrive train structureVSAvoidmaintenance accessibility
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The drive train is segmented into separate functional sections: the input gear remains on the inside of the mower unit for compact integration, while the coupling gear to the following unit is positioned on the outside. This segmentation allows each component to be optimized for its specific function while improving overall accessibility

Inventive Principle:
Principle #1Segmentation

3Device complexity

If the belt drive and pulleys are positioned near the input gear, then the drive train is compact, but installation and removal become difficult due to collisions

Engineering Contradiction:
Improvedrive train compactnessVSAvoidinstallation and removal ease
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The belt drive and pulley components are extracted from the crowded area near the input gear and repositioned on the outside of the mower unit. This extraction eliminates the collisions that hinder installation and removal, while the belt drive remains functionally connected to the drive train

Inventive Principle:
Principle #2Taking out (Extraction)

4Object-affected harmful factors

If the drive train components are positioned to avoid crop collision, then crop flow is improved, but the drive train becomes more complex

Engineering Contradiction:
Improvecrop collisionVSAvoiddrive train structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The drive train components are relocated to the outside dimension of the mower unit, where they naturally clear the crop swath path. This spatial repositioning achieves crop flow improvement without adding complex routing mechanisms, as the external positioning inherently avoids collision

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

This configuration reduces collisions with cut crops, enhances maintenance accessibility, and improves ground clearance, allowing for efficient operation without compromising drive train efficiency.

Implementation Method 1

using a belt or chain drive stage for efficient power transmission to downstream units

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3014974B1Mowing machine
Publication Date: 2018.08.29 ALOIS POETTINGER MASCHFAB
  • EP3014974B1 patent drawingFigure 1~2

AI summary

The present invention relates to a mowing machine with at least one mowing unit (3) to which a subsequent unit (6) for processing the crop cut by the mowing unit (3) is arranged, wherein the mowing unit (3) can be driven by a drive train (7) which has an input gearbox (11) on one side of the mowing unit (3) to which the cutting elements of the mowing unit can be coupled, and wherein the subsequent unit can be driven by coupling to the drive train (7) and/or to the mowing unit (3). According to the invention, the drive train (7) extends from the side of the input gearbox to the opposite side of the mowing unit (3), wherein a coupling gearbox connected to the drive train (7) for driving the subsequent unit (6) is provided on this opposite side.