Stacking Column Ratchet Lever Locking for Transport Stability
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Solution Overview
Problem
Existing stacking columns with ratchet levers tend to automatically return to their resting position when unloaded, especially during transport due to uneven surfaces, which can cause instability and make it difficult to maintain the levers in a working position.
Innovation Solution
A supporting element that rotates with the ratchet lever and rests against a preceding lever in the working position, preventing automatic return to the resting position, and is either integrally joined or fabricated as a separate element, with features like tongues and recesses in sheet metal blanks to simplify production and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ratchet levers are designed to automatically return to resting position when unloaded, then the structure can self-reset, but the stacking column becomes unstable during transport on uneven surfaces
Solution Approach 1:
The patent applies dynamics by making the support arm's position changeable through a ratchet mechanism that allows automatic resetting under normal conditions but can be dynamically locked in the extended position during transport, enabling the system to adapt between operational and transport states
Solution Approach 2:
The patent changes the parameter of support arm position from fixed to variable, allowing the support arm to extend beyond the container rear wall during unloading operations and then retract during transport, with the ratchet mechanism enabling parameter changes in position and locking state
2Stability of the object's composition
If ratchet levers are secured in working position under no load, then stability during transport is improved, but the mechanism complexity increases
Solution Approach 1:
The ratchet mechanism is self-service as it automatically locks the support arm in the extended position when a load is placed on it, and can self-reset when the load is removed, eliminating the need for external locking mechanisms or manual intervention
Solution Approach 2:
The patent extracts the locking function from a separate mechanism and integrates it into the ratchet lever itself, where the ratchet teeth and pawl combination provides both the support function and the locking function in a single integrated component
3Ease of operation
If ratchet levers can self-reset when unloaded, then ease of operation is improved, but reliability during transport on uneven roads deteriorates
Solution Approach 1:
The system dynamically adjusts between two states: during unloading, the support arm extends and can self-reset; during transport, the ratchet mechanism locks the support arm in position, preventing unwanted movement while maintaining the capability for future operational cycles
Data Source
AI summary
The invention relates to a stacking column for holding warehouse items, in particular bodywork parts, on the support arms of ratchet levers, which pivot about a rotational axis from a resting position into a working position. Several ratchet levers are located above one another or next to one another and cooperate with one another. A supporting element, which in the working position lies on or against a preceding ratchet lever, rotates with the latter.