Buoy Split Key Removal Device Using Controlled Compression
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Solution Overview
Problem
Buoy split key removal poses significant safety and efficiency challenges, particularly when the split key is bent or twisted, as current methods often result in injuries and time-consuming processes, with no effective solution for fully mangled keys beyond using high heat.
Innovation Solution
A buoy split key removal apparatus utilizing a power screw to apply a steady and controllable compressive load, combined with a compression and extrusion assembly, allows for efficient removal of bent and twisted split keys by compressing and then releasing the key from the shackle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If brute force and hammer methods are used to remove split keys, then removal force is sufficient, but safety issues arise and crew members are injured
Solution Approach 1:
The patent introduces a specialized removal device with controlled mechanical advantage as an intermediary between the operator and the split key. This device includes a cradle, lever arm, and release mechanism that mediate the force application, eliminating the need for direct hammer strikes on the key and thereby removing the safety hazards associated with brute force methods
Solution Approach 2:
The patent replaces the unsafe mechanical system of hammer and chisel with a controlled mechanical system featuring a lever arm with controlled mechanical advantage. This substitution maintains sufficient removal force while eliminating the harmful effects of uncontrolled impact forces that cause injuries
2Ease of operation
If traditional hammer and chisel methods are used on bent or twisted split keys, then removal is attempted, but the process becomes time-consuming and inefficient
Solution Approach 1:
The patent incorporates a cradle and alignment mechanism that performs preliminary positioning and alignment of the split key before removal. This preliminary action pre-composes the key in the optimal orientation, eliminating the time-consuming trial and error associated with traditional methods on bent or twisted keys
Solution Approach 2:
The patent employs a lever arm with controlled mechanical advantage that provides dynamic force multiplication. This dynamic mechanism adapts to bent or twisted key configurations, providing the necessary force variation to efficiently remove keys in various states without increasing the overall removal time
3Productivity
If high heat intensity blow torch is used to cut mangled split keys, then removal is achieved, but the process is dangerous and requires specialized equipment
Solution Approach 1:
The patent replaces the thermal cutting system (blow torch) with a purely mechanical removal system. The lever arm with controlled mechanical advantage provides sufficient force to cut through mangled keys mechanically, eliminating the need for heat-based cutting equipment and the associated dangers and complexity
4Force
If multiple people are used for split key removal, then sufficient force and control are achieved, but the operation requires more personnel and coordination
Solution Approach 1:
The patent introduces a lever arm mechanism as an intermediary that provides controlled mechanical advantage. This intermediary translates small input forces into large output forces, allowing a single operator to achieve the same control and force multiplication that previously required multiple people working together
Solution Approach 2:
The lever arm system effectively creates a mechanical counterbalance that distributes and controls the forces involved in key removal. This counterbalancing mechanism allows one person to manage forces that would otherwise require multiple operators, simplifying the operation while maintaining sufficient control
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 enables safe and efficient removal of split keys in under 45 seconds, reducing annual removal time from 3200 hours to 2049 hours, and can be operated by one person with minimal equipment, effectively addressing the safety and efficiency issues of existing methods.
Implementation Method 1
The BSD utilizes a power screw to apply a steady and controllable compressive load onto the split key
Data Source
AI summary
A buoy split key (“BSD”) removal apparatus, system, and method are disclosed. The BSD utilizes a power screw to apply a steady and controllable compressive load onto the split key. The BSD applies a compressive force or load to the bitter ends of the split key in order to maximize the use of the moment on the split key. The spread and/or twisted split key is compressed by a compression assembly and compression power screw as supported by a compression frame. The compression assembly provides steady and controllable compression on a buoy split key. A compression power screw and extrusion power screw should be threaded in the opposite direction for maximum torque to remove the buoy split key. Once the split key is fully compressed by the compression assembly, the compressive load from the power screw and split key are then removed.