Line Securing Device with Thread-Driven Lever for Height Safety
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Solution Overview
Problem
Existing securing devices for individuals working at heights lack a robust and easy-to-operate mechanism that balances safety with minimal hindrance to movement, as they often require complex operations to adjust and secure the safety rope effectively.
Innovation Solution
A securing device featuring a support structure with a rope drum, an axle element, and a lever system that allows for easy adjustment between blocking and releasing positions, enabling controlled unreeling and reeling of the safety rope through a thread connection, ensuring a secure and comfortable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mechanism is used to ensure stable and reliable operation of the rope drum, then safety and reliability are improved, but the ease of operation deteriorates
Solution Approach 1:
The mechanism is divided into distinct functional segments: the lever for blocking/unblocking, the thread section for controlled movement, and the rope drum for rope storage. This segmentation allows each component to perform its function simply and reliably without requiring the operator to manage a complex integrated system.
Solution Approach 2:
Instead of using a complex locking mechanism that requires multiple steps to secure, the invention uses a simple lever that naturally blocks the rope drum through its positioning. The blocking is achieved by the lever's geometry and position rather than by active engagement of complex locking components, simplifying the operation while maintaining reliability.
2Ease of operation
If the rope drum is freely rotatable to allow easy unreeling of the safety rope, then ease of operation is improved, but the stability and reliability deteriorate due to risk of accidental unwinding
Solution Approach 1:
The lever acts as an intermediary between the operator's intent and the rope drum's rotation. When positioned in the blocking position, it mediates by preventing accidental unwinding while allowing controlled unreeling when moved to the releasing position, thus reconciling freedom of movement with stability.
Solution Approach 2:
The lever in the blocking position applies preliminary anti-action by pre-preventing accidental unwinding before it can occur. This proactive blocking mechanism ensures that the rope drum cannot rotate unintentionally, while still allowing deliberate unreeling when the lever is moved to the releasing position.
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 device provides a reliable and easy-to-operate mechanism for securing individuals at heights, allowing for adjustable unreeling lengths and preventing accidental rope unwinding, while maintaining the safety rope's functionality without obstructing movement.
Implementation Method 1
The thread section is coupled to the further thread section, such that, upon rotation of the axle element, due to the rotation of the rope drum, the thread section is shifted along the axle element (in the axis direction so to say)
Implementation Method 2
The lever is attached pivotably to the support structure at a deflection point. The lever has a blocking section, which is configured such that, in a blocking position of the lever, the blocking section is coupled to the rope drum in order to disable a rotation of the rope drum
Implementation Method 3
an axle element, which is attached torque-proofly to the rope drum and rotatably (for example by a friction bearing or a ball bearing) to the support structure
Implementation Method 4
an axle element, which is attached torque-proofly to the rope drum and rotatably (for example by a friction bearing or a ball bearing) to the support structure
Data Source
AI summary
A securing device for securing a person has an axle element attached torque-proofly to a rope drum and rotatably to a support structure, such that, by the axle element, the rope drum is supported rotatably at the support structure. A lever is attached pivotably to the support structure at a deflection point. In a blocking position of the lever, a blocking section is coupled to the rope drum in order to disable a rotation of the rope drum, and in a releasing position of the lever, the blocking section is decoupled from the rope drum and the rope drum is rotatable. A thread section of the lever is coupled to a further thread section of the axle element, such that, upon rotation of the axial element, due to the rotation of the rope drum, the thread section is shifted along the axle element, such that, due to the shifting of the thread section, a rotation of the lever around the deflection point and an adjustment between the blocking position and the releasing position of the lever are effected.