Elevator Fall Prevention Device with Integrated Arresting Mechanism
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Solution Overview
Problem
Existing elevator installations with displaceable platforms face challenges in ensuring safe and efficient displacement without falling, particularly during construction of high-rise buildings, where conventional fall prevention devices may not provide adequate safety and operational simplicity.
Innovation Solution
A fall prevention device for displaceable platforms in elevator installations, comprising arresting devices that engage with guide rails via a locking mechanism and safety components, allowing upward displacement while preventing unintended downward movement, with optional suspension points and linkage to the elevator car's safety brake system for synchronized action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fall prevention devices are used, then safety is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple safety functions into a single integrated fall prevention device that integrates the locking mechanism, arresting device, and safety component into one unified system, reducing overall device complexity while maintaining comprehensive safety coverage
Solution Approach 2:
The fall prevention device is designed to perform multiple functions simultaneously: it provides automatic locking, arresting capability, and safety monitoring through a single device structure, eliminating the need for separate safety systems
2Reliability
If locking mechanism is always engaged, then safety is improved, but ease of operation worsens due to inability to deactivate
Solution Approach 1:
The locking mechanism is designed with dynamic engagement capability, allowing it to be activated or deactivated based on operational requirements. The device can be locked during displacement operations and unlocked when the platform needs to be positioned or adjusted, providing flexible control
3Reliability
If arresting devices are urged by springs into blocking position, then reliability is improved, but device complexity increases
Solution Approach 1:
The spring mechanism is designed to balance the weight of the locking components, with the spring force counteracting gravitational effects on the moving parts. This creates a self-balancing system that maintains reliability without requiring additional complex support structures
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
Ensures safe and efficient displacement of displaceable platforms by quickly engaging arresting devices with guide rails, reducing the load on the platform's arresting devices and maintaining operational safety during upward movement, while allowing temporary deactivation for controlled downward movement.
Implementation Method 1
The locking mechanism is constructed so that it blocks or at least can block downward movement of the locking mechanism along the safety component
Implementation Method 2
The locking mechanism is in that regard so connected with the arresting device that in the case of relative movement of the locking mechanism with respect to the displaceable platform it brings the arresting device from a rest position into engagement with the guide rail
Implementation Method 3
The displaceable platform or the displaceable engine room can obviously be displaced upwardly several times until reaching an uppermost use position or the final use position. The hoist for displacing the displaceable platform can act directly on the displaceable platform
Data Source
AI summary
A movable platform having a fall prevention device is arranged in a shaft of an elevator system and is operated by a corresponding method for securing the movable platform. The movable platform includes a complete machine room used in an expandable elevator for a building under construction. The movable platform can be moved vertically along guide rails. In order to secure the movable platform during movement, the fall prevention device includes at least one arresting device that is arranged on the movable platform and which can be brought into engagement with the guide rail if necessary. A locking element arranged on the movable platform interacts with a safety component arranged along the movement path, and can, if necessary, actuate the arresting device together with an arresting braking system of an elevator car attached to the movable platform, the locking element thus blocking a possible downward motion.