Self-Braking Rope Descender Lever Linkage With Anti-Panic Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing self-braking descending devices require significant effort to operate and lack precision in controlling the rope release, with a risk of excessive release leading to dangerous situations, especially for untrained personnel.
Innovation Solution
The device features a tiltable lever connected to a transmission mechanism that allows for adjustable effort and precision in controlling the rope release, with an 'anti-panic' mechanism that prevents excessive release beyond a safe angle, and an optional disablement feature for trained users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lever is solidly attached to the main body, then the structure is simple, but the effort required to actuate the lever is considerable and the precision of rope release control is poor
Solution Approach 1:
A transmission mechanism acts as an intermediary between the lever and the main body, enabling the lever to rotate with greater ease while still effectively controlling the rope release. The transmission mechanism translates the lever's rotation into precise angular movements of the main body, resolving the contradiction between ease of operation and structural simplicity.
2Measurement precision
If the lever is solidly attached to the main body, then the structure is simple, but the precision of rope release control is very limited with small margins of maneuverability
Solution Approach 1:
The transmission mechanism serves as a precision intermediary that amplifies and refines the lever's rotational movement. It provides a mechanical advantage that allows small, precise lever movements to translate into controlled angular changes of the main body, thereby improving rope release precision without requiring complex control systems.
Solution Approach 2:
The transmission mechanism enables parameter changes in the rotational movement, transforming the lever's rotation angle into a different angular displacement of the main body. This parameter transformation allows for finer control over the rope release angle, expanding the margins of maneuverability while maintaining structural simplicity.
3Reliability
If the lever is solidly attached to the main body, then the structure is simple, but it is easy to exceed the safe release angle leading to dangerous situations
Solution Approach 1:
The transmission mechanism is designed with built-in constraints that prevent the main body from rotating beyond a predetermined safe angle. This preliminary anti-action counteracts any excessive lever movement before it can cause dangerous rope release, providing inherent safety without requiring active monitoring or control systems.
Solution Approach 2:
The transmission mechanism provides mechanical feedback that limits the range of motion. As the lever approaches the maximum safe rotation angle, the transmission mechanism's geometric constraints naturally reduce the available movement, providing tactile feedback to the operator and preventing accidental over-rotation that could lead to excessive rope release.
Data Source
AI summary
The invention consists of uncoupling the actuation lever (6) of the device from the main body thereof, such that the same ceases to be integral and becomes pivotable by means of a rotation axis (7), such that it is connected to the head (2) by means of a transmission that reduces the force required to actuate the lever, as well as varies the range of angles in which the lever is effective, thereby making the use of the device easier, more comfortable and more accurate. The device has means for uncoupling the transmission between the lever and the head, surpassing a degree of inclination for the main body that can be dangerous, a mechanism that can be disabled by means of a pin passing through a hole (10) made in the lever (6).