Articulated Cut Header with Orthogonal Hinges
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Solution Overview
Problem
Existing articulated cut headers for agricultural machines are too large in their folded position, obstructing the driver's view and violating road circulation regulations, with complex and costly mechanisms for folding and reconnection, and are prone to dirt exposure and reliability issues.
Innovation Solution
An articulated cut header with two sections that pivot about mutually parallel and orthogonal axes, allowing a first movement to a vertical position and a second movement to a horizontal position, minimizing size and eliminating the need for decoupling transmission components, using hydraulic pistons and hinges for easy operation and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cut headers are hinged using known single hinges and decoupling mechanisms, then the header can be folded to a reduced position, but the overall size in folded position is still too large and hinders driver's view
Solution Approach 1:
The header is divided into two separate sections that can be independently folded and positioned. Each section has its own hinge mechanism, allowing them to be segmented and arranged separately to minimize overall width while maintaining functionality.
Solution Approach 2:
The header sections are folded not only horizontally but also vertically, utilizing three-dimensional space more efficiently. The sections can be positioned at different heights and angles, transforming from a two-dimensional lateral fold to a three-dimensional compact configuration that reduces width without compromising driver visibility.
2Adaptability or versatility
If connecting elements (joints, couplings) are provided to disconnect and reconnect headers to motion transmitting members, then the header can be folded, but manufacturing costs increase and reliability decreases
Solution Approach 1:
The hinge mechanism is merged with the motion transmitting members, eliminating the need for separate connecting elements. The hinge itself serves as both the folding joint and the motion transmission interface, reducing the number of components and potential failure points while maintaining adaptability.
Solution Approach 2:
The hinge mechanism performs multiple functions simultaneously: it enables folding movement, transmits motion from the power take-off, and maintains structural connection. This multi-functional design eliminates the need for dedicated connecting elements, improving reliability while preserving folding capability.
3Adaptability or versatility
If connecting elements are used for folding operations, then the header can be repositioned, but the operations become complicated and maintenance costs increase
Solution Approach 1:
By merging the hinge and motion transmission functions into a single integrated mechanism, the complexity of assembly and maintenance is reduced. Fewer separate components mean simpler manufacturing processes and easier maintenance procedures.
Solution Approach 2:
The design eliminates the need for complex connecting elements that would require frequent inspection, adjustment, and replacement. The simplified hinge mechanism reduces maintenance requirements and associated costs.
4Adaptability or versatility
If connecting elements are kept open during folded position, then the header can be folded, but the elements are exposed to dirt and contamination
Solution Approach 1:
The hinge mechanism is designed as a closed or enclosed structure that protects internal components from dirt and contamination while still allowing the necessary folding movement. The motion transmission elements are integrated within the hinge housing, preventing direct exposure to the external environment.
Data Source
Figure 1~1a
Figure 2~2a
Figure 3
AI summary
Articulated cut header (10) for agricultural machines (30) having a machine longitudinal axis (A) and wheel axes (R). The header comprises a first header section (11) and a second header section (12) having respective longitudinal axes (L). The first and the second header sections are provided with a respective side hinge (13, 14) adapted to allow a first pivotal movement of the respective header section. The header further comprises at least one connecting hinge adapted to allow a second pivotal movement of the header sections. The first pivotal movement is effected about first pivot axes (X) substantially parallel to each other, and the second pivotal movement is effected about a second pivot axis (Y) substantially perpendicular to said pivot axes (X). The first pivot axes (X) and the second pivot axis (Y) are substantially perpendicular to the direction that the longitudinal axes (L) of each of said header sections (11, 12) have at the beginning of the first pivotal movement and the second pivotal movement, respectively.