Coupling Hub Pulling Assembly for Controlled Shaft Removal
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Solution Overview
Problem
The existing methods for removing coupling hubs from rotating machine shafts are inefficient and require multiple personnel, posing safety risks and potential damage to equipment due to the lack of proper support and alignment during the removal process.
Innovation Solution
A coupling hub pulling assembly that includes a support frame sub-assembly, a vertical adjustment sub-assembly, and a puller sub-assembly with puller arms and a pusher stud, which allows for vertical and axial movement to securely separate the coupling hub from the shaft, reducing the need for manual labor and preventing accidental drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used to remove coupling hubs, then the removal process can be completed, but multiple personnel are required and safety risks increase
Solution Approach 1:
The device is divided into distinct functional modules: a support frame for stability, a puller sub-assembly with puller arms for gripping the coupling hub, and a vertical adjustment sub-assembly for positioning. This segmentation allows each component to perform its specific function efficiently, reducing the need for multiple personnel while maintaining safety.
Solution Approach 2:
The puller arms act as intermediaries between the support frame and the coupling hub, providing a mechanical connection that enables controlled removal. The vertical adjustment sub-assembly serves as an intermediary mechanism to precisely position the puller arms, ensuring safe and efficient operation with fewer personnel.
2Reliability
If existing methods are used to remove coupling hubs, then the removal can be performed, but equipment damage risk increases due to lack of proper support and alignment
Solution Approach 1:
The support frame is positioned and stabilized before the coupling hub removal begins. The vertical adjustment sub-assembly pre-positions the puller arms to align with the coupling hub, ensuring proper support and alignment are established in advance, thereby preventing equipment damage during the removal process.
Solution Approach 2:
The support frame and vertical adjustment sub-assembly provide a stable, controlled environment that cushions against unexpected movements or misalignments during coupling hub removal. This preparatory support structure prevents sudden shocks or improper loading that could damage the equipment.
3Reliability
If manual labor is used for coupling hub removal, then the process can be completed, but the risk of accidental drops increases
Solution Approach 1:
The puller arms are designed to automatically grip and hold the coupling hub during the removal process, eliminating the need for manual holding. The vertical adjustment sub-assembly self-adjusts to maintain proper positioning, reducing the risk of accidental drops while keeping the operation straightforward.
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 assembly reduces the number of personnel required for removal, enhances safety by constraining the coupling hub, and prevents damage by ensuring controlled separation and support of the hub once removed.
Implementation Method 1
A winch is mechanically coupled to the support frame sub-assembly and the puller sub-assembly that controls the movement of the puller sub-assembly in the vertical direction
Implementation Method 2
The puller bar includes a screw adjustment body
Data Source
AI summary
An assembly for separating a coupling hub from a shaft of a rotating machine includes a support frame sub-assembly that structurally supports the assembly and the coupling hub. A vertical adjustment sub-assembly is structurally supported by the support frame sub-assembly. The vertical adjustment sub-assembly adjusts the elevation of a puller sub-assembly from the surface of the Earth. The puller sub-assembly couples to the coupling hub and separates the coupling hub from the shaft.