Land Roller Implement with Fold-Over Subframes
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Solution Overview
Problem
Conventional fold-out land roller implements have a widened transport mode due to horizontally offset rollers, which increases the machine's width when folded up, necessitating a solution to minimize this width during transport.
Innovation Solution
The design incorporates raisable and lowerable rollers on movable subframes that pivot over other rollers, allowing them to be elevated in transport mode, reducing the overall width by overlapping them, and utilizing ground wheel assemblies to lift the wings and adjust roller positions for compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If rollers are positioned horizontally offset on fixed wing frames to provide continuous ground coverage, then ground coverage is improved, but transport width increases
Solution Approach 1:
The patent applies the dynamics principle by making the subframe carrying the roller movable relative to the wing frame through a pivot connection. The subframe can pivot between a deployed position where the roller contacts the ground for ground coverage and a folded position where the roller is elevated for reduced transport width. This dynamic configuration allows the system to adapt its structure based on operational requirements, resolving the contradiction between maintaining ground coverage and minimizing transport width.
Solution Approach 2:
The patent employs dimensionality change by moving the roller from a fixed horizontal offset position to a vertically adjustable position via the movable subframe. In the folded position, the roller is elevated above the wing frame, transitioning the configuration from a two-dimensional horizontal arrangement to a three-dimensional arrangement that utilizes vertical space. This allows the roller to be positioned out of the way during transport while still providing ground coverage when deployed.
2Reliability
If multiple rollers are statically supported in horizontally offset positions, then continuous roller coverage is achieved, but machine width across folded wings increases
Solution Approach 1:
The patent makes the roller support system dynamic by introducing a movable subframe that can pivot relative to the wing frame. This allows the roller to transition between a deployed position for continuous ground coverage and a folded position for compact transport, eliminating the need for static horizontal offset positioning while maintaining reliability of ground coverage during operation.
Solution Approach 2:
The patent segments the roller support system into a movable subframe assembly that can be independently positioned relative to the main wing frame. This segmentation allows the roller to be decoupled from the fixed wing structure, enabling it to be folded up during transport while the wing frame remains intact. The segmented design maintains roller coverage continuity during work by allowing the subframe to be deployed when needed.
Data Source
AI summary
A land roller implement with fold-out wings features at least one raisable/lowerable roller on each wing that is carried on a movable subframe that is pivotally mounted to the main frame of the wing. The movable subframe is pivotal up into a folded position overlying the main frame of the wing so that the raisable/lowerable roller is elevated overtop of an adjacent roller on the same wing. This minimizes the width of the implement when the wings are folded in to lie longitudinally of the implement for transport.