Perpendicular Sowing Unit Arrangement for Seed Drill Operator Fatigue
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Solution Overview
Problem
Existing self-propelled seed drills face challenges such as high operator fatigue due to the need to constantly monitor V-shaped sowing units, limited working widths, increased design complexity, and difficulty in observing the sowing process, especially when integrated with grain harvesters or combine harvesters.
Innovation Solution
A self-propelled seed drill design with sowing units aligned almost perpendicularly to the direction of travel, allowing for easier observation and production simplicity, featuring a support frame structure that pivots the seed units for wide working widths without exceeding transport width limits, and incorporating a pivotable driver's cab and crab steering for balanced operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sowing units are arranged in a V-shape configuration, then the machine can cover wider working widths, but the operator experiences high physical strain and rapid fatigue from constantly moving head to monitor all units
Solution Approach 1:
The patent inverts the conventional V-shaped arrangement by positioning the sowing units in a line perpendicular to the direction of travel, with the driver seated at one end. This allows the driver to monitor all sowing units in one direction without excessive head movement, eliminating the fatigue problem while maintaining wide working width capability
2Ease of operation
If sowing units are arranged perpendicular to direction of travel, then all units are visible to the driver without head movement, but the lateral sowing units require greater distance between coulters to maintain constant seed row spacing
Solution Approach 1:
The patent employs asymmetric positioning where the driver's cab is located at one end of the perpendicular sowing unit arrangement, creating an optimized observation geometry. This asymmetric layout allows all sowing units to be monitored from a single vantage point without requiring complex adjustments to coultel spacing, as the driver's position at the end of the perpendicular arrangement provides natural viewing angles
3Volume of moving object
If sowing units are positioned below the driver's cab in combine harvester integration, then space is utilized efficiently, but the driver cannot observe the sowing units as they are obscured from view
Solution Approach 1:
The patent resolves the visibility problem by arranging sowing units perpendicular to the direction of travel rather than below the cab, effectively changing the spatial dimension from vertical (below cab) to horizontal (perpendicular to travel). This dimensional change allows the driver to observe all sowing units from the cab position without obstruction, while the compact perpendicular arrangement still efficiently utilizes vehicle space
4Stability of the object's composition
If working units are positioned far out on the carrier vehicle for road transport, then transport stability is improved, but axle loads increase and vehicle rocking occurs during braking
Solution Approach 1:
The patent combines the working units with the carrier vehicle body in an integrated manner, positioning them along the longitudinal axis rather than far out on extensions. This merging approach distributes the mass more evenly along the vehicle structure, reducing concentrated axle loads and minimizing rocking during braking while maintaining transport stability through the integrated design
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The vehicle (2) has vehicle axle (11) comprising a region, in which sowing units (3-5) of a seeder (1) are arranged in an operating- and transport position. The sowing units are arranged perpendicular to a driving direction (FR) of the vehicle in the operating position. The sowing units are moveable from a non-operating position into the operating position and vice versa. The sowing units are connected with each other directly or by a carrier frame structure (7) in the operating position. The carrier frame structure accommodates the seeder such that the seeder is moved by the structure.