Modular Energy-Absorbing Unit for Fall Protection
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Solution Overview
Problem
Existing fall-protection systems, such as self-retracting lifelines, face challenges in efficiently managing the connection and disconnection of energy-absorbing units to cables and harnesses, particularly in maintaining continuous fall protection without interfering with work activities and requiring frequent reconnection.
Innovation Solution
An energy-absorbing unit with a modular connector system that connects to the cable of a self-retracting lifeline and a fastener for attachment to a dorsal connection point on a fall-protection harness, allowing for reversible connection and disconnection, enabling the unit to function as part of the cable and providing energy absorption during falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy-absorbing unit is permanently attached to the cable and harness, then fall protection reliability is improved, but ease of operation deteriorates due to inability to disconnect during work activities
Solution Approach 1:
The energy-absorbing unit is designed as a separate, modular component that can be independently connected to and disconnected from the cable and harness. This segmentation allows the unit to remain attached during work activities for continuous protection while enabling easy disconnection when not needed, resolving the contradiction between reliability and ease of operation.
2Ease of operation
If the energy-absorbing unit is made disconnectable for work activities, then ease of operation is improved, but reliability deteriorates due to potential interruption of fall protection
Solution Approach 1:
The connection system transitions from a static permanent attachment to a dynamic modular connection that can be easily adjusted based on work requirements. The energy-absorbing unit can be quickly connected or disconnected using simple modular interfaces, allowing workers to adapt the system to their needs while maintaining protection when required.
3Adaptability or versatility
If frequent reconnection is required, then adaptability to work activities is improved, but loss of time increases due to repeated connection and disconnection operations
Solution Approach 1:
The energy-absorbing unit is pre-configured with modular connectors that enable rapid connection and disconnection without requiring complex assembly or adjustment operations. This preliminary design of the connection interface minimizes the time required for reconnection operations while maintaining full adaptability to different work activities.
Data Source
AI summary
An energy-absorbing unit with a first end bearing a modular connector that is disconnectably connectable to a complementary modular connector of a cable of a self-retracting lifeline, and with a second end bearing a fastener that is fastenable to a dorsal connection point of a fall-protection harness. Uses of such units in combination with self-retracting lifelines and fall-protection harnesses.