Harvesting Attachment Frame with Curved Connection Wall

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Solution Overview

Problem

Current harvesting attachments for combine harvesters face limitations in width due to stability and weight issues, leading to increased bending moments and torsion forces, which restrict their ability to efficiently harvest crops in a shorter time with fewer passages.

Innovation Solution

The harvesting attachment features a frame made from light metal extruded sections with a curved connection wall, allowing for a larger working width while reducing weight and enhancing strength, along with a fastening region for harvesting units that includes a guide and latching devices for adjustable placement, enabling wider configurations without compromising stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the harvesting attachment is widened to increase working width, then productivity is improved, but weight increases and stability deteriorates due to increased bending moments and torsion forces

Engineering Contradiction:

Improveworking widthVSAvoidweight of harvesting attachment

Core Design Contradiction:

ProductivityVSWeight of moving object

Solution Approach 1:

The frame is constructed using composite material structure, specifically combining aluminum alloy extruded sections with strategic reinforcement elements. This allows achieving high strength-to-weight ratio, enabling wider working width without proportionally increasing weight, thus resolving the contradiction between productivity improvement and weight increase

Inventive Principle:

Principle #40Composite materials

2Productivity

If the harvesting attachment is widened to increase working width, then productivity is improved, but stability deteriorates due to increased bending moments and torsion forces

Engineering Contradiction:

Improveworking widthVSAvoidstability of harvesting attachment

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The frame incorporates curved connection walls and optimized geometric shapes in its extruded sections, which provide better structural rigidity and resistance to bending moments compared to straight linear structures. This curvature design enhances stability while maintaining the increased working width for improved productivity

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The use of composite structural design with aluminum alloy extruded sections combined with strategic reinforcement creates a frame that resists torsion forces and bending moments effectively, maintaining stability even at wider configurations that increase productivity

Inventive Principle:

Principle #40Composite materials

3Productivity

If the harvesting attachment is widened to increase working width, then productivity is improved, but inherent weight increases continuously

Engineering Contradiction:

Improveworking widthVSAvoidinherent weight

Core Design Contradiction:

ProductivityVSWeight of moving object

Solution Approach 1:

The frame uses aluminum alloy extruded sections with optimized wall thicknesses and reinforcement strategically placed only where structurally necessary. This composite approach achieves the required strength for wider configurations without continuously increasing inherent weight across the entire structure

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The frame design applies local reinforcement only at critical stress points and connections, while other areas maintain lighter construction. This localized quality enhancement allows width expansion for improved productivity without proportionally increasing overall inherent weight

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10172288B2Harvesting attachment for a harvester

Publication Date: 2019.01.08 BISO SCHRATTENECKER

AI summary

A harvesting attachment for a harvester comprises a frame which includes a rear wall and a base wall. The base wall includes at its end a fastening region for fastening a harvesting unit.