Arborist Throw Weight Structure for Snag-Resistant Rope Routing
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Solution Overview
Problem
Arborists face challenges when installing ropes through tree crotches and canopies, as throwing weights and lines often get snagged, leading to damage or abandonment due to the need for additional force and potential entanglement with branches.
Innovation Solution
An arborist device with a unitary structure featuring a conical shape, annular groove, and internal open space that allows for the secure attachment and manipulation of throwing lines and weights, reducing snagging and damage by providing a controlled path through the tree canopy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additional force is applied to pivot the throwing weight around obstructions, then the rope installation can be completed, but the throwing weight may become stuck and damaged
Solution Approach 1:
The throwing weight is divided into two main segments: a fabric bag containing shot and a separate metal ring. This segmentation allows the metal ring to serve as a dedicated maneuvering component that can be easily grabbed and pivoted, while the fabric bag remains protected and does not directly contact branches, reducing the risk of getting stuck
Solution Approach 2:
The metal ring acts as an intermediary between the arborist's hands and the throwing weight. Instead of directly manipulating the fabric bag, the arborist grabs the metal ring to pivot and maneuver the throwing weight around obstructions, reducing direct contact and the risk of the fabric bag becoming stuck
2Speed
If the throwing weight is launched with more force to clear obstructions, then it can pass through the canopy faster, but it increases the likelihood of snagging on branches
Solution Approach 1:
The fabric bag is designed with flexible material that allows it to deform and conform as it passes through the tree canopy. This flexibility enables the bag to navigate around branches and obstructions more smoothly, reducing snagging while maintaining momentum
Solution Approach 2:
The throwing weight is designed with a generally spherical or rounded shape rather than sharp edges or corners. This curved geometry reduces the likelihood of catching on branches during launch and passage through the canopy, allowing smoother movement at higher speeds
3Ease of operation
If a lightweight throwing line is used to pull the working rope, then it can be easily maneuvered, but it may get snagged and damaged more easily
Solution Approach 1:
The throwing line is merged with the throwing weight assembly through the metal ring connection. This combination allows the lightweight throwing line to be used for maneuvering while the robust metal ring provides structural strength and protection at the critical connection point where snagging would cause damage
Data Source
AI summary
An arborist device and method of using the same are provided. The device can include a unitary structure having a head and a body that together define an internal open space; the structure extending longitudinally from a first end on the head to a second end opposite the first end, the second end defining an annular opening that provides access to the internal open space; and an annular groove defined by a depression on an external surface of the unitary structure, wherein the groove demarcates the head from the body; and wherein the head includes an opening at the first end, the opening extending into a channel that extends toward the groove, on a front side of the unitary structure.