Variable Conveying Gap in Mowing Machine Transverse Auger
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Solution Overview
Problem
Existing mowing machines with transverse conveyors face issues with congestion and increased drive energy requirements due to changing crop throughputs, and struggle to form a precise swath deposit, especially with bottlenecks at scraper bars.
Innovation Solution
A mowing machine design featuring a transverse conveyor auger with a hood that adjusts the width of the conveying gap between the auger windings and the hood's inner lateral surface, allowing for variable width adjustment to accommodate changing crop throughputs, preventing congestion and power surges, and incorporating a scraper strip to prevent stalk wrapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a stationary casing with fixed conveying gap is used, then the structure is simple and robust, but the conveying process experiences bottlenecks and congestion with fluctuating crop throughputs
Solution Approach 1:
The conveying gap width is made variable through an adjusting device that can change the distance between the inner surface of the hood and the outer contour of the transverse screw conveyor. This dynamic adjustment allows the system to adapt to fluctuating crop throughputs, preventing bottlenecks and congestion while maintaining simple and robust overall structure.
2Manufacturing precision
If the conveying gap width is fixed, then the device structure is simple, but the swath formation precision deteriorates with varying crop quantities
Solution Approach 1:
The adjusting device enables dynamic modification of the conveying gap width to adapt to varying crop quantities, ensuring precise swath formation. The hood's inner surface can be moved closer to or further from the transverse screw conveyor, allowing the system to maintain optimal conveying conditions for precise swath deposition regardless of throughput variations.
3Productivity
If scraper bars are used to control transverse conveying, then the structure is simple, but congestion occurs and swath formation precision is compromised
Solution Approach 1:
Instead of using stationary scraper bars, the invention employs a dynamic adjusting device that modifies the conveying gap width. This approach eliminates congestion issues associated with fixed scraper bars while maintaining effective control over transverse conveying, thereby ensuring both high productivity and precise swath deposition.
4Productivity
If the hood inner surface is made adjustable, then the conveying process becomes smooth and congestion-free, but the device complexity increases
Solution Approach 1:
The hood inner surface is equipped with an adjusting device that allows dynamic modification of the conveying gap width. This dynamic capability ensures smooth conveying processes by adapting to fluctuating crop throughputs, preventing bottlenecks and congestion. The adjustment mechanism is designed to be integrated into the existing hood structure, minimizing overall device complexity while achieving conveying smoothness.
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
Ensures a trouble-free transverse conveying process and optimal swath deposition by adapting to varying crop quantities without unwanted compression, maintaining efficient power usage and preventing stalk entanglement.
Implementation Method 1
at least two cutting tools arranged rotatably around their circumference, projecting radially outwards due to centrifugal force and generating a cutting action
Data Source
Figure 1~3
Figure 2
Figure 4
AI summary
Mowing machine with a number of cutting elements (2) mounted on a mowing device (1) and driven to rotate about an approximately vertical axis, which have at least two cutting tools arranged rotatably on their circumference, projecting radially outwards due to centrifugal force and producing a cutting action, with a transverse conveyor (3) downstream of the mowing device (1), which comprises a transverse conveyor screw (4) lying about a and oriented at least approximately transversely to the direction of travel and operation (F), which is arranged directly behind the mowing device (1) and receives the mowed crop directly from the mowing device (1), with a hood (5) at least partially surrounding the transverse conveyor screw (4), which has an inlet opening (8) pointing in the direction of travel and operation (F) and whose inner surface (9) defines a conveying gap (10) with the outer contour of the transverse conveyor screw (4),wherein the width of the conveying gap (10) between the inner surface (9) of the hood (5) and the outer contour of the transverse screw conveyor (4) is designed to be variable by means of an adjusting device (15).