Pruning Apparatus With Toothed Wheel Guide
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Solution Overview
Problem
Conventional vine or cane pruning machines cause damage to vegetation due to motorized wheels that push the vegetation away and are inefficient, requiring slower speeds and additional manual pruning.
Innovation Solution
A pruning apparatus with a toothed wheel that guides the pruning process without pushing vegetation, combined with a displaceable arm assembly and rotary cutter for effective cutting, allowing for reduced damage and increased speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized wheels are used to guide the pruning machine, then the machine can be driven along the row, but the vegetation is pushed away from the cutting blades reducing effectiveness
Solution Approach 1:
The patent introduces guide wheels with lateral displacement capability as an intermediary between the prime mover and the vegetation. These guide wheels can move sideways to navigate around posts and obstacles without pushing vegetation, thereby mediating between the need for machine guidance and the requirement to maintain vegetation positioning for effective cutting
2Speed
If motorized wheels are used for guiding, then the machine can traverse the row, but the wheels are rough on the vines causing lasting damage
Solution Approach 1:
The guide wheels are designed with lateral displacement capability, allowing them to dynamically adjust their position to navigate around posts and obstacles. This dynamic movement enables the wheels to traverse the row at higher speeds while avoiding direct contact with and damage to the vegetation, resolving the contradiction between traversal speed and vegetation protection
3Productivity
If conventional pruning machines are used, then pruning can be performed, but additional manual pruning is still required
Solution Approach 1:
The patent replaces the conventional rotary saw blade mechanical cutting system with a flail cutter system that uses swinging beaters to mechanically break and chop vegetation. This substitution provides more effective and complete cutting action, eliminating the need for subsequent manual pruning while maintaining high productivity
4Manufacturing precision
If the cutter is mounted with effective cutting area within the wheel diameter, then cutting is more precise, but the cutting coverage is limited
Solution Approach 1:
The patent positions the flail cutter laterally adjacent to the guide wheel rather than confining it within the wheel diameter. This dimensional repositioning allows the cutter to access vegetation in a broader lateral area while the guide wheel maintains precise positioning, thereby expanding cutting coverage without sacrificing positioning precision
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
The apparatus minimizes damage to vegetation while enabling faster pruning speeds, reducing the need for manual intervention and enhancing mechanized pruning efficiency.
Implementation Method 1
the wheel rotates by consequence of its engagement with the vegetation and vine or cane posts as the apparatus is driven along a row of vines or canes for pruning
Implementation Method 2
a driven rotary cutter mounted co-axially to the wheel for cutting vegetation caught between the teeth
Data Source
AI summary
A vine or cane pruning apparatus, comprising a toothed wheel for guiding the pruning apparatus over vegetation in use, the wheel comprising a multiplicity of generally radially projecting teeth distributed about the periphery of the wheel for catching vegetation between gaps of the teeth, and wherein the wheel rotates by consequence of its engagement with the vegetation and vine or cane posts as the apparatus is driven along a row of vines or canes for pruning; and a driven rotary cutter mounted co-axially to the wheel for cutting vegetation caught between the teeth, the cutter being configured such that its effective cutting area falls within the diameter of the wheel.