Portable Hoisting System Gin Pole Friction Reduction
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Solution Overview
Problem
Existing hoisting systems for tall poles and towers are not portable, efficient, or cost-effective, as they do not allow for reduced friction in the load line and require additional manual effort due to their conventional straight design, which can lead to increased operational complexity and safety risks.
Innovation Solution
A portable hoisting system featuring a hollow gin pole with an angularly adjustable arm and pulleys that allow the load line to travel through the interior, reducing friction and enabling efficient operation, which includes a capstan hoist connected to a vehicle and an optional tag line for ground assistance, allowing for easy movement and setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional straight hoisting system is used, then the structure is simple, but the friction on the load line is high requiring additional manual effort
Solution Approach 1:
The hoisting system is divided into multiple functional segments: a hollow gin pole, an angularly adjustable arm, multiple pulleys (including a first pulley on the arm and a second pulley on the gin pole), and a brace structure. This segmentation allows the load line to travel through the interior of the gin pole and over pulleys, reducing friction and mechanical advantage requirements while distributing the complexity across manageable components.
Solution Approach 2:
The load line path is moved from an external horizontal arrangement to an internal three-dimensional path through the hollow gin pole. The load line travels vertically through the interior of the gin pole and over pulleys, utilizing the vertical dimension and internal space to reduce friction and improve mechanical efficiency without increasing the horizontal footprint.
2Adaptability or versatility
If a portable hoisting system is designed, then the system can be moved between job locations, but the structural stability may be compromised
Solution Approach 1:
The system incorporates an angularly adjustable arm that can be positioned at different angles (e.g., 90 degrees or 45 degrees) relative to the gin pole, allowing adaptation to various job site conditions and pole configurations. The brace connected between the extension arm and the upright gin pole provides dynamic structural support that can be adjusted and reconfigured for different operational requirements while maintaining stability.
Solution Approach 2:
The hoisting system is designed as a modular assembly of separate components (gin pole, arm, brace, pulleys, load line) that can be disassembled, transported, and reassembled at different job locations. This segmented design enables portability while each component maintains its structural integrity and function.
3Ease of operation
If pulleys are added to reduce friction, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
Multiple pulleys are integrated into the existing gin pole and arm structure rather than being added as separate external components. The first pulley is mounted on the angularly adjustable arm and the second pulley is mounted on the gin pole, allowing the load line to travel through the interior of the gin pole and over these pulleys. This merging approach reduces friction and improves mechanical efficiency while minimizing the increase in overall system complexity.
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 system enhances operational efficiency and safety by reducing friction, eliminating the need for cranes in many cases, and can be easily manufactured and moved between job locations, making it suitable for various construction tasks on tall structures.
Implementation Method 1
allows the load line to travel through the inside of the hoisting system... so as to decrease friction on the load line
Data Source
AI summary
Method and apparatus for a portable hoisting system having an upright gin pole which is attached to the upright standing very tall pole or tower using a plurality of straps. Extending away from the gin pole is an angularly adjustable arm which is user selectable to be either; e.g., at a 90-degree angle or a 45-degree angle, which arm is supported by a brace connected between the extension arm and the upright gin pole. The gin pole is hollow on its inside which allows a load line to travel through the interior of the gin pole from its lower end to its upper outlet end and includes a plurality of pulleys which allow the load line to travel through the inside of the hoisting system. Also included is a heel block or the like wherein one end of the load line is connected to a capstand hoist disposed on the front or rear end of a vehicle and a ball with hook for supporting a load. Also included optionally is a tag line connected to the load line and being held by a ground member for helping to control the movement of the load.