Wind Turbine Door Locking Device for Tool-Free Emergency Egress
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Solution Overview
Problem
Existing lockable doors in wind turbines pose challenges for quick egress during emergencies and accidental locking, as they often require tools for unlocking.
Innovation Solution
A door locking device with a central component and attaching means that allows manual release from the inside without tools, featuring mechanical connections that can be unlocked by hand, ensuring rapid exit in emergencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door is locked with a conventional locking device requiring tools for unlocking, then security against unauthorized entry is improved, but emergency egress speed and ease of operation deteriorate
Solution Approach 1:
The locking device is segmented into two independent connection systems: a first connection for securing the door to the central component, and a second connection for securing the central component to the stationary component. This segmentation allows the door to be locked securely while enabling emergency egress by releasing only the second connection from the interior.
Solution Approach 2:
The central component acts as an intermediary element between the door and the stationary component. It mediates the locking function by providing two separate connection interfaces, allowing the door to remain secured during normal operation while enabling quick release from the interior through the attaching means.
2Reliability
If the door locking device uses tool-secured connections, then prevention of accidental locking is improved, but ease of manual release deteriorates
Solution Approach 1:
Different connection points have different quality characteristics: the connecting means (first connection) requires tools for securing and releasing to prevent accidental locking, while the attaching means (second connection) is designed for tool-free manual release from the interior. This local differentiation of connection qualities resolves the contradiction between security and ease of emergency release.
3Strength
If the door is secured with a robust locking mechanism, then protection against unauthorized entry is improved, but speed of door opening in emergencies deteriorates
Solution Approach 1:
The robust locking mechanism is segmented into two independent connections with different release characteristics. The first connection provides strong security, while the second connection (attaching means) can be quickly released from the interior without tools, enabling rapid door opening in emergencies while maintaining strong security during normal operation.
Data Source
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AI summary
Door arrangement for a wind turbine (2), comprising a door (7) with an outer side (9) and an inner side (10) and a door locking device (6) for locking and unlocking the closed door (7) by coupling and decoupling the closed door (7) with a stationary component (15) of the door arrangement (5) of the wind turbine (2), wherein the door locking device (6) comprises a central component (12), an attaching means (17) and a connecting means (18), wherein the central component (12) is attached to the stationary component (15) by the attaching means (17) and connectable and disconnectable with the door (7) by the connecting means (18) for locking and unlocking the door (7) by a person (19) being at the outer side (9), wherein the attaching means (17) is manually releasable by a person (20) being at the inner side (10) for disconnecting the central component (12) from the stationary component (15) to unlock the door (7) without tools.