Removable Anchoring Device With Locking Stop Mechanism
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Solution Overview
Problem
Existing removable anchoring devices fail to maintain effective blocking in bore holes without a suspended load, as the spring's force alone is insufficient to prevent extraction, and require minimal force to remove the device from the hole.
Innovation Solution
The anchoring device incorporates a gripping knob with a stop mechanism that allows for two axial adjustment positions, enabling the device to be locked in place by manually moving the knob against the stop, preventing release until manually unlocked, and featuring a visible indicator for the locked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring force is used to maintain blocking in the bore hole, then the device can be easily extracted when no load is suspended, but the blocking is not secure without a suspended load
Solution Approach 1:
The gripping knob is made movable between two axial positions (first position for extraction, second position for secure blocking), allowing the device to dynamically switch between easy extraction mode and secure blocking mode. This resolves the contradiction by making the blocking security dependent on the operational state rather than relying solely on spring force.
Solution Approach 2:
The stop mechanism provides visual feedback through the indicator (colored cylindrical surface) to confirm whether the gripping knob is in the locked or unlocked position. This feedback ensures users can verify the blocking state, enhancing reliability without compromising extraction ease.
2Loss of information
If the gripping knob is pulled back against spring force for release, then extraction is enabled, but blocking cannot be confirmed in the inserted state
Solution Approach 1:
The stop is provided with an axial flange having a colored cylindrical lateral surface that serves as a visual indicator. When the indicator is visible, it confirms the non-locked state; when hidden, it confirms the locked state. This provides clear blocking state confirmation without adding complex mechanical indicators.
3Reliability
If the gripping knob is made adjustable between two positions, then blocking state is confirmed, but the device structure becomes more complex
Solution Approach 1:
The stop mechanism is integrated into the existing structure of the fixed first part, and the gripping knob's axial adjustment is achieved through simple threading collaboration. This merging of functions minimizes additional structural complexity while providing reliable blocking confirmation.
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 secure anchoring even without a suspended load by requiring a specific manual action to unlock and extract the device, enhancing safety and reliability in applications like mountain climbing and working at heights.
Implementation Method 1
a spring biasing the wedging means in the blocking direction
Implementation Method 2
wedging means collaborating with the end head to perform blocking or releasing inside the bore hole
Data Source
AI summary
A removable anchoring device comprising a fixed first part with an expansion head, and a movable second control part having wedging half-rings and a gripping knob associated with a stop and a spring. The stop is arranged on the fixed first part and is movable with respect to the gripping knob by a relative translational movement to disable any release command in a predefined position. The gripping knob is thus able to occupy a first axial adjustment position offset from the stop to indicate the non-locked state enabling the release command, and is movable to a second axial adjustment position in engagement against the stop to indicate the locked state and to disable said release command.