Quadrail Ergonomic Assembly Apparatus for Heavy Load Suspension
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Solution Overview
Problem
The single point overhead hoist method compromises worker safety and efficiency during equipment assembly, as suspended workloads can fall or cause damage, necessitating a safer and more cost-effective method for suspending and manipulating heavy loads.
Innovation Solution
A quadrail ergonomic apparatus with multiple pathways and carriages that allow for movement in multiple directions, enabling secure suspension and precise positioning of workloads, allowing for ergonomic assembly and maintenance while minimizing safety risks and operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single point overhead hoist is used to suspend workloads, then the workload can be lifted and suspended in the air, but worker safety is compromised due to the risk of the suspended workload falling or shifting
Solution Approach 1:
The invention divides the single suspension point into multiple pathways (typically four) arranged in a quadrilateral configuration. Each pathway independently supports the workload, so if one pathway fails or shifts, the other pathways maintain support, preventing catastrophic failure and enhancing worker safety while preserving workload suspension capability
Solution Approach 2:
The invention transitions from a single-point (zero-dimensional) suspension to a multi-point spatial distribution (three-dimensional quadrilateral configuration). This dimensional expansion allows the workload to be supported from multiple locations simultaneously, restricting unwanted movement and preventing the workload from falling or shifting unpredictably
2Device complexity
If a single point overhead hoist is used, then the setup is simple, but the suspended workload may inadvertently cause part installation miscues or physical damage
Solution Approach 1:
By segmenting the suspension into four separate pathways arranged in a quadrilateral, the system distributes the workload support across multiple stable points. This segmentation prevents the workload from swinging or shifting to any single extreme position, thereby preventing inadvertent part installation miscues and physical damage while maintaining manageable system complexity
Solution Approach 2:
The quadrilateral configuration inherently provides stability and control before operations begin. The multi-point suspension pre-restricts the workload's movement range, cushioning against potential harmful effects such as swinging into equipment or causing miscues before they can occur
3Productivity
If traditional hoisting methods are used, then the assembly process can proceed, but additional time is required for removing and reinstalling foreign objects that fall within the engine
Solution Approach 1:
The four-pathway quadrilateral suspension creates a more controlled and stable environment that prevents parts from falling into the engine in the first place. By distributing support across multiple points, the system eliminates the unpredictable single-point failure mode that causes parts to drop, thereby preventing foreign object incidents and avoiding the time loss associated with their removal
Solution Approach 2:
The quadrilateral suspension system establishes stable, controlled positioning of the workload before assembly operations begin. This preliminary stabilization prevents parts from inadvertently slipping or falling during assembly, eliminating the need for subsequent foreign object removal operations and preserving assembly throughput
Data Source
AI summary
A quadrail ergonomic apparatus includes two or more pathways designed to permit movement in two or more directions mounted to a static object above a surface. One or more carriages designed to move in two or more directions are disposed within the pathways. Each carriage is suspended above the surface from the pathways and capable of maintaining a workload in place and permitting movement of the workload in at least four directions.