Active Backsheet for Grain Header Crop Flow
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Solution Overview
Problem
Current agricultural combine headers face inefficiencies due to the use of static backsheets, which can cause crop material to become stacked and generate friction, leading to inconsistent feeding and increased power requirements, potentially damaging crops and reducing harvesting efficiency.
Innovation Solution
Implementing active conveyors, such as movable belts and augers, to direct crop material towards the feeder housing, replacing or complementing static backsheets, to enhance the flow and reduce friction, thereby improving the efficiency of crop collection and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static backsheets are used to prevent crop material from moving backward, then crop material containment is improved, but friction increases causing inconsistent feeding and increased power requirements
Solution Approach 1:
The patent replaces static backsheets with active conveyor belts that can move dynamically. The conveyor belts are driven by motors and can adjust their speed and direction to actively propel crop material forward, eliminating the friction and power inefficiencies associated with static backsheets while maintaining reliable crop material containment and forward movement.
2Device complexity
If static backsheets are used to direct crop material, then structural simplicity is maintained, but crop flow consistency deteriorates due to stacking and friction
Solution Approach 1:
The patent implements active conveyor belts with motorized drive mechanisms that can dynamically adjust to crop flow conditions. This dynamic system actively propels crop material forward, preventing stacking and ensuring consistent flow to the feeder, thereby significantly improving harvesting efficiency despite the increased structural complexity compared to static backsheets.
3Area of stationary object
If header width is increased to gather wider swath, then crop collection capacity is improved, but lateral feed rate requirement increases proportionally
Solution Approach 1:
The patent uses active conveyor belts with variable speed control to match the lateral feed rate to the header width and crop flow conditions. The motorized conveyors can accelerate or decelerate as needed, allowing the header to maintain a wide swath collection area without being constrained by fixed feed rate limitations, thus optimizing both crop collection capacity and processing efficiency.
Data Source
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AI summary
An agricultural vehicle header having a frame, a front conveyor, and a rear conveyor. The frame extends in a lateral direction from a first end to a second end and has a leading edge, and a feeder housing opening positioned behind the leading edge with respect to a forward direction. The front conveyor is attached to the frame behind the leading edge with respect to the forward direction, and includes a front movable surface configured to move an adjacent portion of crop material towards the feeder housing opening. The rear conveyor is attached to the frame behind the front conveyor, and has a rear belt having an operative surface that faces in the forward direction and is configured to move an adjacent portion of crop material towards the feeder housing opening. An agricultural vehicle having such a header is also provided.