Ladder Stabilizer Arm Pivoting for Uneven Surface Support
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Solution Overview
Problem
Ladders often struggle to maintain stability on uneven or inclined surfaces, leading to safety issues due to non-vertical rail positioning, which existing leveling devices may not adequately address.
Innovation Solution
An adjustable extension for ladder legs featuring a stabilizer arm that pivots to contact the surface, providing sideways stabilization, combined with a mechanism for longitudinal movement and locking to secure the extension in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional ladder is used on uneven surfaces, then the ladder structure remains simple, but the ladder becomes unstable and rails cannot be positioned vertically
Solution Approach 1:
The ladder system is divided into separate functional components: the main ladder structure and detachable extension assemblies with stabilizer arms. Each extension assembly can be independently adjusted and deployed, allowing the stabilizer function to be segmented from the primary ladder structure.
Solution Approach 2:
The stabilizer arms are designed with pivot joints that allow them to dynamically adjust and contact the ground at varying angles. The arms can rotate about a pivot axis to adapt to different surface conditions, providing active stabilization rather than fixed rigid support.
2Stability of the object's composition
If a ladder leveling device is added to position rails vertically, then ladder stability improves, but the device complexity increases
Solution Approach 1:
The extension assembly serves multiple functions simultaneously: it extends the ladder reach, provides ground contact through the stabilizer arm, and ensures vertical rail positioning through its structural design. The stabilizer arm both supports the extended leg and maintains proper ladder orientation.
Solution Approach 2:
The stabilizer arm is integrated with the extension leg assembly rather than being a separate attachment. The pivot coupling combines the extension function and stabilization function into a single coordinated mechanism that moves and locks together.
3Adaptability or versatility
If the stabilizer arm is made adjustable to compensate for uneven surfaces, then adaptability to different terrains improves, but the mechanism complexity increases
Solution Approach 1:
The stabilizer arm uses spring-loaded or friction-based self-locking mechanisms that automatically maintain contact with the ground surface. The arm self-adjusts to the terrain angle and locks in position without requiring manual adjustment or complex control systems.
Solution Approach 2:
The pivot coupling allows the stabilizer arm to dynamically rotate and adapt to different ground angles. The arm moves freely during deployment and can be positioned at various angles to match the terrain, providing continuous adaptability rather than discrete fixed positions.
4Length of moving object
If the extension leg is made movable longitudinally to extend height, then height adjustment capability improves, but the locking mechanism complexity increases
Solution Approach 1:
The extension leg incorporates self-latching mechanisms that automatically engage at predetermined height positions. Springs or friction devices maintain the locked position and can be released with simple manual action, eliminating the need for complex multi-step locking procedures.
Solution Approach 2:
The extension system is divided into discrete height positions with corresponding locking points. The leg can be extended to specific predetermined lengths and locked at each position, segmenting the continuous extension motion into manageable discrete steps.
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 solution effectively stabilizes ladder extensions on uneven surfaces, preventing falls and ensuring safer use by allowing for adjustable height compensation and stabilization in multiple directions.
Implementation Method 1
a stabilizer arm pivotably coupled to and movable with the inner housing, the stabilizer arm being pivotable about an axis perpendicular to the first and second directions such that the stabilizer arm is rotated relative to the inner housing to contact a surface
Data Source
AI summary
Provided is ladder having an extension leg movable longitudinally in first and second directions opposite one another, and a stabilizer arm pivotably coupled to and movable with the extension leg. The stabilizer arm is pivotable about an axis perpendicular to the first and second directions such that the stabilizer arm is rotated relative to the extension leg to contact a surface to stabilize the ladder in a sideways direction perpendicular to the first and second directions.