Agricultural Header Reel Position Control to Prevent Cutter Bar Interference

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing agricultural headers face challenges in efficiently cutting crops due to interference between the cutter bar assembly and the reel assembly, which can limit the effectiveness of both components.

Innovation Solution

The implementation of a controller that monitors the movement of the cutter bar assembly and adjusts the position of the reel assembly to avoid contact with the cutter bar assembly, ensuring optimal operation by setting position boundaries based on feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the reel assembly is positioned close to the cutter bar assembly to improve crop guiding, then crop cutting effectiveness is improved, but interference between the reel assembly and cutter bar assembly occurs

Engineering Contradiction:

Improvecrop cutting effectivenessVSAvoidinterference between components

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The reel assembly is made dynamically adjustable relative to the cutter bar assembly through a position adjustment mechanism. The system can change the reel position based on operating conditions, allowing it to be close to the cutter bar for effective crop guiding while moving away when interference occurs. This dynamic adjustment resolves the contradiction by making the system adaptable rather than fixed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A feedback mechanism detects interference between the reel assembly and cutter bar assembly and signals the control system to adjust the reel position. The system continuously monitors the operational state and automatically adjusts the reel assembly position in response to detected interference, ensuring optimal performance while preventing harmful contact.

Inventive Principle:

Principle #23Feedback

2Productivity

If the reel assembly position is made adjustable to avoid interference, then operational efficiency is improved, but device complexity increases

Engineering Contradiction:

Improveoperational efficiencyVSAvoidcontrol system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system incorporates automatic control where the reel assembly position adjustment is performed autonomously based on detected interference conditions. The feedback mechanism and control system work together to self-regulate the reel position without requiring constant manual intervention, improving operational efficiency while keeping the control complexity manageable through automation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces purely manual mechanical adjustment with an automated control system that uses sensors and actuators. This substitution reduces the complexity of manual operation while achieving precise position control, improving operational efficiency without proportionally increasing overall system complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP4081013B1Systems and methods for limiting reel adjustment in an agricultural header

Publication Date: 2025.02.12 CNH IND BELGIUM NV

Figure 1
Figure 2
Figure 3

AI summary

An agricultural system includes a frame, a cutter bar assembly configured to move relative to the frame during an operation of the agricultural system, a reel assembly configured to guide crops to the cutter bar assembly during the operation of the agricultural system, and a controller. The controller is configured to receive feedback indicative of a profile of the cutter bar assembly, set a position boundary of the reel assembly based on the feedback, and block movement of the reel assembly to a position beyond the position boundary of the reel assembly.