Agricultural Cutter Bar Height Adjustment System

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Solution Overview

Problem

Agricultural implements, such as harvesting headers, face challenges in maintaining a consistent cutting height above the terrain surface due to terrain variations, leading to inconsistent cutting and potential wear or failure of cutter bars.

Innovation Solution

A height adjustment apparatus with terrain contact elements and a spring device allows for synchronized movement of the cutter bar relative to the main frame, maintaining a consistent separation distance from the terrain surface, and includes a pneumatic system for cutter bar float gas bags to absorb shocks and maintain a constant counteracting force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the cutter bar is rigidly mounted to the main frame, then the structural strength is improved, but the ability to follow terrain variations deteriorates

Engineering Contradiction:

Improvestructural strengthVSAvoidability to follow terrain variations

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The cutter bar is transformed from a rigid fixed mounting to a dynamic floating mounting system that can move vertically relative to the main frame. The floatation mechanism allows the cutter bar to adapt to terrain variations while maintaining structural integrity through controlled movement rather than rigid connection.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The cutter bar assembly is separated from the main frame into independent movable and fixed components. The cutter bar can float independently on the terrain while the main frame remains stable, allowing each component to perform its optimal function without compromising the other.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the cutter bar is allowed to float relative to the main frame, then the ability to follow terrain variations is improved, but the structural stability deteriorates

Engineering Contradiction:

Improveability to follow terrain variationsVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

A floatation mechanism acts as an intermediary between the cutter bar and main frame. This intermediary component absorbs the instability of terrain variations while maintaining the structural stability of the main frame, allowing the cutter bar to follow terrain without compromising overall structural integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the cutter bar is raised off the terrain surface, then the wear on cutter bar is reduced, but the cutting height consistency deteriorates

Engineering Contradiction:

Improvecutter bar durabilityVSAvoidcutting height consistency

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The cutter bar floating system is designed to automatically self-adjust its height by floating on the terrain surface. The system uses the terrain itself as the reference surface, allowing the cutter bar to maintain consistent cutting height without external intervention while minimizing wear through controlled floatation.

Inventive Principle:

Principle #25Self-service

4Manufacturing precision

If the cutter bar is maintained close to the terrain surface, then the cutting precision is improved, but the exposure to terrain impacts and wear increases

Engineering Contradiction:

Improvecutting precisionVSAvoidterrain impacts and wear

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The floatation mechanism provides beforehand cushioning by creating a buffer zone between the cutter bar and terrain impacts. This cushioning system absorbs shock loads and reduces direct impacts while maintaining close proximity to the terrain surface for precise cutting.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 solution ensures consistent cutting height, reduces wear on cutter bars, and enhances the ability to follow terrain changes, leading to improved crop yields and extended equipment lifespan.

Implementation Method 1

a spring device operable to provide a counteracting force

Methodology Applied

Scientific EffectSpring: Spring

Implementation Method 2

a pneumatic system for cutter bar float gas bags to absorb shocks and maintain a constant counteracting force

Methodology Applied

Scientific EffectPneumatic:

Data Source

PatentUS20240206382A1Height positioning and adjustment system for an agricultural implement

Publication Date: 2024.06.27 HONEY BEE MANUFACTURING LTD

AI summary

An agricultural apparatus comprises a propulsion unit and an implement connected to the propulsion unit. The implement comprises: (i) a main frame having a main frame weight, (ii) an operational unit; (iii) a unit support apparatus configured to interconnect the operational unit to the main frame; (iv) a height adjustment apparatus comprising a terrain contact element, the height adjustment apparatus connected to the unit support apparatus. The terrain contact element is operable to be positioned to contact the terrain surface level at a contact region such that the at least one terrain contact element supports the unit support apparatus at a vertical separation distance above the terrain surface. The height adjustment apparatus is operable to adjust the vertical separation distance of the unit support apparatus above the terrain surface and thereby adjust a vertical separation distance of the operational unit above the terrain surface.