Lineman's Hoist Threaded Shaft Drill Actuation
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Solution Overview
Problem
Current lineman's hoists lack the ability to quickly and safely displace or move a first hoist hook closer to an opposed second hoist hook, which is essential for efficient operation at elevated heights.
Innovation Solution
A lineman's hoist system comprising a bolt shaft, a threaded shaft, and a head bolt that can be threadably engaged, allowing the threaded shaft to move leftwardly or rightwardly by rotating the head bolt, enabling the first hoist hook to be positioned closer to the second hoist hook using a cordless drill or similar device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a traditional strap and ratchet mechanism is used, then the hoist structure is simple and easy to manufacture, but the ability to quickly and safely displace hoist hooks is limited
Solution Approach 1:
The patent applies the dynamics principle by replacing the static ratchet mechanism with a dynamic threaded shaft system that can be actively adjusted. The threaded shaft allows the hoist hooks to be moved quickly along the bolt shaft by rotating the head bolt, enabling dynamic repositioning rather than fixed positioning. This resolves the contradiction by introducing controlled motion capability while maintaining structural simplicity through the use of basic mechanical components.
Solution Approach 2:
The patent applies parameter changes by modifying the position parameter of the hoist hooks along the bolt shaft. The threaded shaft mechanism allows precise control over the position parameter, enabling the hooks to be displaced to different locations quickly. This resolves the contradiction by providing adjustable positioning capability without requiring a completely complex mechanism, as the same threaded shaft can accommodate various hook positions.
2Productivity
If manual adjustment of hoist hooks is used, then the device structure remains simple, but operational efficiency and safety are reduced
Solution Approach 1:
The patent applies mechanics substitution by replacing manual mechanical adjustment with a drill-driven rotational system. The cordless drill or impact driver substitutes for manual hand operation, providing powered rotation of the head bolt that drives the threaded shaft to move the hooks. This resolves the contradiction by significantly improving operational efficiency through powered assistance while maintaining ease of operation through the simple interface of attaching a common power tool.
3Loss of time
If hoist hooks are positioned far apart, then there is more space for maneuvering, but the time required to complete wire pulling tasks increases
Solution Approach 1:
The patent applies dynamics by enabling the hoist hooks to be dynamically repositioned to optimal distances for specific tasks. The threaded shaft mechanism allows the operator to adjust the distance between hooks based on the requirements of wire pulling operations, rather than being fixed in a single position. This resolves the contradiction by providing the flexibility to optimize hook spacing for time efficiency while maintaining the ability to maneuver when needed.
Solution Approach 2:
The patent applies parameter changes by modifying the distance parameter between hoist hooks to optimize operational efficiency. The adjustable threaded shaft system allows the distance parameter to be changed according to task requirements, enabling shorter distances for faster wire pulling while still allowing sufficient space for maneuvering when necessary. This resolves the contradiction by making the distance parameter variable rather than fixed.
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
Enables quick and safe adjustment of the hoist hooks, enhancing operational efficiency and safety when working at elevated heights by allowing precise positioning of the hooks, facilitating tasks such as wire pulling and stretching.
Implementation Method 1
a head bolt that can be disposed through said bolt shaft to be threadably engaged with said threaded shaft
Data Source
AI summary
A lineman's hoist that can be operated by a drill or similar device by its engagement with the head bolt. The head bolt is freely disposed with a head shaft and the head bolt is threadably engaged with a threaded shaft to displace the threaded shaft with respect to the bolt shaft. Thus this can move and displace items or wires that may be connected to the first hoist hook or second hoist hook.