Elevated Platform Safety Gates With Pitchable Ledge And Folding Staging
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Solution Overview
Problem
Existing safety gates for elevated platforms, such as mezzanines, have large footprints, restrict access to pallets from multiple sides, and obstruct vertical access, thereby reducing usable workspace and complicating loading and unloading operations.
Innovation Solution
A safety gate system comprising a structural frame with a pair of columns and interconnected ledge and staging gates that move relative to each other, allowing the ledge gate to pitch upward and the staging gate to unfold laterally for loading, and vice versa for unloading, minimizing the vertical and horizontal envelope while maintaining fall protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional safety gates are used for elevated platforms, then fall protection is provided, but the footprint is large and access to pallets is restricted
Solution Approach 1:
The safety gate system employs dynamic components including a pitchable ledge gate that rotates about a pivot axis and a foldable staging gate that moves between extended and retracted positions. These dynamic elements allow the gate to adapt its configuration based on operational needs, providing fall protection only when required while minimizing footprint during loading operations.
Solution Approach 2:
The gate system is divided into separate functional segments: a ledge gate for controlling access to the ledge area and a staging gate for enclosing the staging area. This segmentation allows each component to be optimized independently and enables the gate to provide comprehensive protection without requiring a monolithic large footprint structure.
2Reliability
If traditional safety gates are used, then fall protection is maintained, but access to pallets from multiple sides is restricted
Solution Approach 1:
The ledge gate's ability to pitch between horizontal and vertical positions, combined with the staging gate's foldable design, creates a dynamic barrier system that can be opened from multiple sides. This allows operators to access pallets from various directions while maintaining fall protection when the gates are in their closed positions.
Solution Approach 2:
The gate system is designed to serve multiple functions: providing fall protection, enabling access from multiple sides, and accommodating different loading configurations. The combination of the pitchable ledge gate and foldable staging gate creates a universal solution that handles various operational scenarios without requiring separate systems for each function.
3Reliability
If traditional safety gates are used, then safety is provided, but vertical access is obstructed
Solution Approach 1:
The ledge gate's pitching motion about a pivot axis positioned below the ledge surface enables the gate to transition from a vertical safety barrier to a horizontal position that clears the loading path. This dynamic reconfiguration allows vertical access during loading operations while maintaining safety protection when the gate is in its closed vertical position.
4Area of stationary object
If the gate envelope is minimized, then workspace is preserved, but the mechanism complexity increases
Solution Approach 1:
The compact envelope is achieved through dynamic components that move within a small footprint: the ledge gate pitches within a limited angular range about a pivot axis, and the staging gate folds within a constrained space. While these mechanisms add complexity, they enable the gate to provide full functionality within a minimized envelope, preserving workspace when not in use.
Data Source
AI summary
A safety gate has: a structural frame including a pair of columns spaced from one another along a peripheral edge of an elevated platform to define a ledge entrance to a staging area of the elevated platform; a ledge gate; and a staging gate; and in which the ledge gate and the staging gate are connected to move together relative to the pair of columns: into a loading configuration when the ledge gate rises and pitches upward, and the staging gate lowers and unfolds laterally away from the pair of structural columns, to allow a) the ledge gate to open the ledge entrance and b) the staging gate to enclose the staging area; and into an unloading configuration when the ledge gate lowers and pitches downward, and the staging gate rises and folds laterally toward the pair of structural columns, to allow a) the ledge gate to close the ledge entrance and b) the staging gate to expose the staging area.