Trellis Cross Beams with Detachable Line Holders for Pruning
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Solution Overview
Problem
The labor-intensive process of pruning vines supported by trellises with wires attached to a support structure is inefficient due to the difficulty in detaching and reattaching the wires.
Innovation Solution
A trellis design featuring cross beams with downwardly facing retaining slots that allow vine lines to be securely attached and easily removed for pruning, using sleeves with inclined, dog-legged slots that enable non-destructive release by exerting downward pressure, facilitating mechanical pruning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wires are attached to the support structure of the trellis, then the vines are supported in an elevated manner, but the pruning process becomes labor intensive and inefficient
Solution Approach 1:
The support structure is segmented into modular components: upright posts, cross beams, and detachable line holders. Each line holder is a separate component that can be independently attached to cross beams and positioned along the beam, allowing individual wire management without disturbing the entire trellis structure.
Solution Approach 2:
The line holders incorporate movable retaining slots that can dynamically transition between locked and unlocked positions. The retaining slots are designed to hold vine lines securely during normal operation but can be easily released by applying downward pressure, enabling quick wire detachment for pruning and subsequent reattachment.
2Reliability
If wires are securely attached to the support structure, then vine support stability is improved, but mechanical pruning becomes difficult
Solution Approach 1:
Line holders serve as intermediary components between the rigid cross beams and the flexible vine lines. These holders provide a controlled interface that maintains stable support while allowing easy release, acting as a mediator that reconciles the conflicting requirements of secure attachment and easy detachment for mechanical pruning.
Solution Approach 2:
The retaining slots in the line holders are designed with specific geometric parameters (inclined surfaces, downward-facing orientation) that change the mechanical interaction between the wire and holder. When downward pressure is applied, these parameter changes enable the wire to slip out of the retaining slot, facilitating mechanical pruning while maintaining stability during normal growth.
Data Source
AI summary
A trellis is described herein, including a series of upright posts, cross beams supported by the posts in an elevated state, at least one line holder fitted to each beam, each holder having one or more downwardly facing retaining slot or slots, and vine lines connected to the holders such that they are located in and pass through the retaining slots so that the lines run laterally in rows and can be non-destructively removed from the slots by exerting downward pressure on the lines.