Header Faceplate Tilt Control With Friction-Reducing Biasing

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Solution Overview

Problem

Current agricultural harvesters face challenges in achieving low-friction lateral tilting of the header due to large compressive forces causing significant frictional resistance at the interface between the header and the feederhouse, leading to inefficient following of ground contours.

Innovation Solution

A faceplate sub-assembly with biasing elements, such as hydraulic cylinders or springs, is connected between the feederhouse and the header to reduce friction forces, allowing lateral tilting by counteracting the compressive forces and maintaining stable equilibrium during operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a pivot pin is oriented above the crop-flow opening in the feederhouse, then the header can be supported and positioned, but large compressive forces create significant frictional resistance to lateral tilting

Engineering Contradiction:

Improveheader positioning stabilityVSAvoidlateral tilting ease

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The invention divides the support function into two separate mechanisms: the pivot pin provides vertical support and positioning stability, while the biasing element (spring or hydraulic cylinder) independently manages the compressive force. This segmentation allows the pivot pin to maintain stability without bearing the full compressive load that would create friction against lateral tilting.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The biasing element acts as a counterforce mechanism that opposes and balances the compressive force generated by the header weight. By providing an upward biasing force, it reduces the net compressive force at the interface between the header and feederhouse, thereby reducing friction and enabling easier lateral tilting while maintaining stable support.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

2Adaptability or versatility

If hydraulic cylinders are used for active header control, then the header can follow ground contours from a suspended height, but contact with the ground is necessary to prevent unavoidable contact and assist control

Engineering Contradiction:

Improveground contour following capabilityVSAvoidcontactless control reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Gauge wheels serve as intermediary elements between the header and the ground. They provide controlled contact points that assist the active hydraulic control system by preventing unwanted lateral movement and ensuring stable ground following, while allowing the header to maintain its primarily suspended position. The gauge wheels mediate between the need for contactless operation and the need for reliable ground contour following.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the faceplate is pivotably mounted to the feederhouse, then lateral tilting is enabled, but friction at the interface resists the tilting motion

Engineering Contradiction:

Improvelateral tilting capabilityVSAvoidfrictional resistance force

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The biasing element provides a counterforce that opposes the compressive force pressing the faceplate against the feederhouse. By reducing the net compressive force at the pivot interface, it directly reduces the frictional resistance to lateral tilting motion, making the tilting operation easier while maintaining sufficient contact for stable support.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

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

The solution enables low-friction lateral tilting of the header, ensuring effective tracking of ground contours and minimizing crop loss by maintaining consistent contact with the ground, thereby enhancing harvesting efficiency.

Implementation Method 1

The at least one biasing element has one end connected to the faceplate and another end that is configured to be connected to the feederhouse for reducing a friction force at the interface between the faceplate and the feederhouse to accommodate lateral tilting of the faceplate

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

Methodology Applied

Scientific EffectMechanical Force: Force

Data Source

PatentUS12532808B2Passive header tilt control for rigid-mode operation with friction-controlling cylinders

Publication Date: 2026.01.27 CNH INDUSTRIAL AMERICA LLC

AI summary

A faceplate sub-assembly for an agricultural vehicle includes a faceplate and at least one biasing element. The faceplate is configured to be connected between (i) a feederhouse defining an inlet opening through which crop material is delivered for processing by the agricultural vehicle, and (ii) a header of the agricultural vehicle. The faceplate is configured to be pivotably mounted to the feederhouse such that the faceplate is configured for lateral tilting relative to the feederhouse. The at least one biasing element has one end connected to the faceplate and another end that is configured to be connected to the feederhouse for reducing a friction force at the interface between the faceplate and the feederhouse to accommodate lateral tilting of the faceplate.