Hydraulic Gauge Wheel Header Assembly for Uneven Terrain Support
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Solution Overview
Problem
Agricultural headers face challenges in supporting their weight evenly across wide surfaces and navigating uneven terrain, which can lead to load imbalances and potential damage or contamination during crop harvesting.
Innovation Solution
A header assembly with a gauge wheel system that includes a hydraulic cylinder and biasing element, allowing the gauge wheel to adjust between extended and retracted configurations for support during operation and transport, utilizing a hydraulic system with accumulators and control valves to manage pressure and position, ensuring stable operation and compact transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the gauge wheel is positioned below the lower surface of the header to support weight on uneven surfaces, then the header's stability and weight distribution are improved, but the header's clearance height and risk of damage increase
Solution Approach 1:
The gauge wheel assembly is made dynamically adjustable between extended and retracted positions using a hydraulic cylinder. This allows the system to adapt its configuration based on operational needs - extended when weight support is needed on uneven terrain, retracted when clearance is prioritized during transport or sensitive operations.
Solution Approach 2:
The position of the gauge wheel relative to the header's lower surface is changed as a variable parameter rather than a fixed dimension. By controlling the extension/retraction of the hydraulic cylinder, the system can adjust the gauge wheel position to optimize between stability and damage risk depending on ground conditions and operational phase.
2Reliability
If the gauge wheel is extended to provide support during operation, then the header's performance on uneven terrain is improved, but the header's transport compactness deteriorates
Solution Approach 1:
The gauge wheel assembly transitions from a static component to a dynamic one that can change its position state. During operation, it extends to provide reliable ground contact and support. During transport, it retracts to minimize the header's overall profile and prevent interference with other equipment or structures.
Solution Approach 2:
The gauge wheel assembly serves multiple functions through its adjustable positioning - it provides operational support on uneven terrain when extended, and acts as a compact, non-interfering component when retracted for transport. This multi-functionality resolves the contradiction between operational reliability and transport compactness.
3Measurement precision
If a hydraulic cylinder is used to position the gauge wheel, then the positioning precision and adjustability are improved, but the system complexity increases
Solution Approach 1:
A hydraulic cylinder is employed to provide controlled, precise extension and retraction of the gauge wheel assembly. The hydraulic system offers smooth positioning with controllable force, enabling accurate placement of the gauge wheel at the desired position relative to the header's lower surface while managing the complexity through standardized hydraulic components.
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 system effectively supports the header's weight on uneven surfaces during operation and retracts for compact transport, maintaining a consistent clearance height and preventing damage or contamination, while allowing for adjustable height settings and pressure management.
Implementation Method 1
a hydraulic cylinder configured to selectively extend from a retracted configuration towards an extended configuration to urge a lower edge of the gauge wheel below and away from the lower surface of the header
Implementation Method 2
a biasing element arranged to bias the hydraulic cylinder to the retracted configuration
Implementation Method 3
The hydraulic system may comprise at least one accumulator for charging to the fixed pressure, such that the at least one accumulator maintains the fixed pressure in the hydraulic cylinder
Data Source
AI summary
A header assembly for an agricultural vehicle includes a header having a lower surface and at least one gauge wheel assembly. The gauge wheel assembly includes a gauge wheel and a coupling mechanism coupling the gauge wheel to the header. The coupling mechanism includes a hydraulic cylinder configured to selectively extend from a retracted configuration towards an extended configuration to urge a lower edge of the gauge wheel below and away from the lower surface of the header, and a biasing element arranged to bias the hydraulic cylinder to the retracted configuration.